[PATCH 0/25] powerpc: 4xx PCI, PCI-X and PCI-Express support among others

[PATCH 0/25] powerpc: 4xx PCI, PCI-X and PCI-Express support among others

[Benjamin Herrenschmidt]

Here's a set of patches that bring PCI, PCI-X and PCI-Express
support to 4xx on arch/powerpc. It also changes/fixed various
bits and pieces, such as a bit of rework of arch/powerpc/boot
4xx code, adding a couple of new platforms along the way. 

There are some issues with the SCSI stack vs. non-coherent
DMA that I'm working on fixing separately, and there's a
problem I noticed with the e1000 driver vs. 64 bits resources
on 32 bits architectures for which I also have a patch that
I posted separately. Appart from that, I got it working fine
with a USB2 card in an ebony and 2 USB storage devices.

[PATCH 2/25] powerpc: Merge pci_process_bridge_OF_ranges()

[Benjamin Herrenschmidt]

This patch merges the 32 and 64 bits implementations of
pci_process_bridge_OF_ranges(). The new function is cleaner than both
the old ones supports 64 bits ranges on ppc32 which is necessary for
the 4xx port.

It also adds some better (hopefully) output to the kernel log which
should help disagnose problems and makes better use of existing OF
parsing helpers (avoiding a few bugs of both implementations along
the way).

There are still a few unfortunate ifdef's but there is no way around
these for now at least not until some other bits of the PCI code are
made common.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Tested on a few pSeries, PowerMac G5, and a 32 bits PowerMacs and
a BriQ. Please let me know if it misbehaves anywhere else.

 arch/powerpc/kernel/pci-common.c |  177 +++++++++++++++++++++++++++++++++++++++
 arch/powerpc/kernel/pci_32.c     |  114 -------------------------
 arch/powerpc/kernel/pci_64.c     |   93 --------------------
 include/asm-powerpc/pci-bridge.h |    1 
 4 files changed, 178 insertions(+), 207 deletions(-)

Index: linux-work/arch/powerpc/kernel/pci-common.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/pci-common.c	2007-12-03 12:00:58.000000000 +1100
+++ linux-work/arch/powerpc/kernel/pci-common.c	2007-12-03 12:01:55.000000000 +1100
@@ -479,3 +479,180 @@ void pci_resource_to_user(const struct p
 	*start = rsrc->start - offset;
 	*end = rsrc->end - offset;
 }
+
+/**
+ * pci_process_bridge_OF_ranges - Parse PCI bridge resources from device tree
+ * @hose: newly allocated pci_controller to be setup
+ * @dev: device node of the host bridge
+ * @primary: set if primary bus (32 bits only, soon to be deprecated)
+ *
+ * This function will parse the "ranges" property of a PCI host bridge device
+ * node and setup the resource mapping of a pci controller based on its
+ * content.
+ *
+ * Life would be boring if it wasn't for a few issues that we have to deal
+ * with here:
+ *
+ *   - We can only cope with one IO space range and up to 3 Memory space
+ *     ranges. However, some machines (thanks Apple !) tend to split their
+ *     space into lots of small contiguous ranges. So we have to coalesce.
+ *
+ *   - We can only cope with all memory ranges having the same offset
+ *     between CPU addresses and PCI addresses. Unfortunately, some bridges
+ *     are setup for a large 1:1 mapping along with a small "window" which
+ *     maps PCI address 0 to some arbitrary high address of the CPU space in
+ *     order to give access to the ISA memory hole.
+ *     The way out of here that I've chosen for now is to always set the
+ *     offset based on the first resource found, then override it if we
+ *     have a different offset and the previous was set by an ISA hole.
+ *
+ *   - Some busses have IO space not starting at 0, which causes trouble with
+ *     the way we do our IO resource renumbering. The code somewhat deals with
+ *     it for 64 bits but I would expect problems on 32 bits.
+ *
+ *   - Some 32 bits platforms such as 4xx can have physical space larger than
+ *     32 bits so we need to use 64 bits values for the parsing
+ */
+void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
+					    struct device_node *dev,
+					    int primary)
+{
+	const u32 *ranges;
+	int rlen;
+	int pna = of_n_addr_cells(dev);
+	int np = pna + 5;
+	int memno = 0, isa_hole = -1;
+	u32 pci_space;
+	unsigned long long pci_addr, cpu_addr, pci_next, cpu_next, size;
+	unsigned long long isa_mb = 0;
+	struct resource *res;
+
+	printk(KERN_INFO "PCI host bridge %s %s ranges:\n",
+	       dev->full_name, primary ? "(primary)" : "");
+
+	/* Get ranges property */
+	ranges = of_get_property(dev, "ranges", &rlen);
+	if (ranges == NULL)
+		return;
+
+	/* Parse it */
+	while ((rlen -= np * 4) >= 0) {
+		/* Read next ranges element */
+		pci_space = ranges[0];
+		pci_addr = of_read_number(ranges + 1, 2);
+		cpu_addr = of_translate_address(dev, ranges + 3);
+		size = of_read_number(ranges + pna + 3, 2);
+		ranges += np;
+		if (cpu_addr == OF_BAD_ADDR || size == 0)
+			continue;
+
+		/* Now consume following elements while they are contiguous */
+		for (; rlen >= np * sizeof(u32);
+		     ranges += np, rlen -= np * 4) {
+			if (ranges[0] != pci_space)
+				break;
+			pci_next = of_read_number(ranges + 1, 2);
+			cpu_next = of_translate_address(dev, ranges + 3);
+			if (pci_next != pci_addr + size ||
+			    cpu_next != cpu_addr + size)
+				break;
+			size += of_read_number(ranges + pna + 3, 2);
+		}
+
+		/* Act based on address space type */
+		res = NULL;
+		switch ((pci_space >> 24) & 0x3) {
+		case 1:		/* PCI IO space */
+			printk(KERN_INFO
+			       "  IO 0x%016llx..0x%016llx -> 0x%016llx\n",
+			       cpu_addr, cpu_addr + size - 1, pci_addr);
+
+			/* We support only one IO range */
+			if (hose->pci_io_size) {
+				printk(KERN_WARNING
+				       " \\--> Skipped (too many) !\n");
+				continue;
+			}
+#ifdef CONFIG_PPC32
+			/* On 32 bits, limit I/O space to 16MB */
+			if (size > 0x01000000)
+				size = 0x01000000;
+
+			/* 32 bits needs to map IOs here */
+			hose->io_base_virt = ioremap(cpu_addr, size);
+
+			/* Expect trouble if pci_addr is not 0 */
+			if (primary)
+				isa_io_base =
+					(unsigned long)hose->io_base_virt;
+#endif /* CONFIG_PPC32 */
+			/* pci_io_size and io_base_phys always represent IO
+			 * space starting at 0 so we factor in pci_addr
+			 */
+			hose->pci_io_size = pci_addr + size;
+			hose->io_base_phys = cpu_addr - pci_addr;
+
+			/* Build resource */
+			res = &hose->io_resource;
+			res->flags = IORESOURCE_IO;
+			res->start = pci_addr;
+			break;
+		case 2:		/* PCI Memory space */
+			printk(KERN_INFO
+			       " MEM 0x%016llx..0x%016llx -> 0x%016llx %s\n",
+			       cpu_addr, cpu_addr + size - 1, pci_addr,
+			       (pci_space & 0x40000000) ? "Prefetch" : "");
+
+			/* We support only 3 memory ranges */
+			if (memno >= 3) {
+				printk(KERN_WARNING
+				       " \\--> Skipped (too many) !\n");
+				continue;
+			}
+			/* Handles ISA memory hole space here */
+			if (pci_addr == 0) {
+				isa_mb = cpu_addr;
+				isa_hole = memno;
+				if (primary || isa_mem_base == 0)
+					isa_mem_base = cpu_addr;
+			}
+
+			/* We get the PCI/Mem offset from the first range or
+			 * the, current one if the offset came from an ISA
+			 * hole. If they don't match, bugger.
+			 */
+			if (memno == 0 ||
+			    (isa_hole >= 0 && pci_addr != 0 &&
+			     hose->pci_mem_offset == isa_mb))
+				hose->pci_mem_offset = cpu_addr - pci_addr;
+			else if (pci_addr != 0 &&
+				 hose->pci_mem_offset != cpu_addr - pci_addr) {
+				printk(KERN_WARNING
+				       " \\--> Skipped (offset mismatch) !\n");
+				continue;
+			}
+
+			/* Build resource */
+			res = &hose->mem_resources[memno++];
+			res->flags = IORESOURCE_MEM;
+			if (pci_space & 0x40000000)
+				res->flags |= IORESOURCE_PREFETCH;
+			res->start = cpu_addr;
+			break;
+		}
+		if (res != NULL) {
+			res->name = dev->full_name;
+			res->end = res->start + size - 1;
+			res->parent = NULL;
+			res->sibling = NULL;
+			res->child = NULL;
+		}
+	}
+
+	/* Out of paranoia, let's put the ISA hole last if any */
+	if (isa_hole >= 0 && memno > 0 && isa_hole != (memno-1)) {
+		struct resource tmp = hose->mem_resources[isa_hole];
+		hose->mem_resources[isa_hole] = hose->mem_resources[memno-1];
+		hose->mem_resources[memno-1] = tmp;
+	}
+}
Index: linux-work/arch/powerpc/kernel/pci_32.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/pci_32.c	2007-12-03 12:00:58.000000000 +1100
+++ linux-work/arch/powerpc/kernel/pci_32.c	2007-12-03 12:01:02.000000000 +1100
@@ -842,120 +842,6 @@ pci_device_from_OF_node(struct device_no
 }
 EXPORT_SYMBOL(pci_device_from_OF_node);
 
-void __init
-pci_process_bridge_OF_ranges(struct pci_controller *hose,
-			   struct device_node *dev, int primary)
-{
-	static unsigned int static_lc_ranges[256] __initdata;
-	const unsigned int *dt_ranges;
-	unsigned int *lc_ranges, *ranges, *prev, size;
-	int rlen = 0, orig_rlen;
-	int memno = 0;
-	struct resource *res;
-	int np, na = of_n_addr_cells(dev);
-	np = na + 5;
-
-	/* First we try to merge ranges to fix a problem with some pmacs
-	 * that can have more than 3 ranges, fortunately using contiguous
-	 * addresses -- BenH
-	 */
-	dt_ranges = of_get_property(dev, "ranges", &rlen);
-	if (!dt_ranges)
-		return;
-	/* Sanity check, though hopefully that never happens */
-	if (rlen > sizeof(static_lc_ranges)) {
-		printk(KERN_WARNING "OF ranges property too large !\n");
-		rlen = sizeof(static_lc_ranges);
-	}
-	lc_ranges = static_lc_ranges;
-	memcpy(lc_ranges, dt_ranges, rlen);
-	orig_rlen = rlen;
-
-	/* Let's work on a copy of the "ranges" property instead of damaging
-	 * the device-tree image in memory
-	 */
-	ranges = lc_ranges;
-	prev = NULL;
-	while ((rlen -= np * sizeof(unsigned int)) >= 0) {
-		if (prev) {
-			if (prev[0] == ranges[0] && prev[1] == ranges[1] &&
-				(prev[2] + prev[na+4]) == ranges[2] &&
-				(prev[na+2] + prev[na+4]) == ranges[na+2]) {
-				prev[na+4] += ranges[na+4];
-				ranges[0] = 0;
-				ranges += np;
-				continue;
-			}
-		}
-		prev = ranges;
-		ranges += np;
-	}
-
-	/*
-	 * The ranges property is laid out as an array of elements,
-	 * each of which comprises:
-	 *   cells 0 - 2:	a PCI address
-	 *   cells 3 or 3+4:	a CPU physical address
-	 *			(size depending on dev->n_addr_cells)
-	 *   cells 4+5 or 5+6:	the size of the range
-	 */
-	ranges = lc_ranges;
-	rlen = orig_rlen;
-	while (ranges && (rlen -= np * sizeof(unsigned int)) >= 0) {
-		res = NULL;
-		size = ranges[na+4];
-		switch ((ranges[0] >> 24) & 0x3) {
-		case 1:		/* I/O space */
-			if (ranges[2] != 0)
-				break;
-			hose->io_base_phys = ranges[na+2];
-			/* limit I/O space to 16MB */
-			if (size > 0x01000000)
-				size = 0x01000000;
-			hose->io_base_virt = ioremap(ranges[na+2], size);
-			if (primary)
-				isa_io_base = (unsigned long) hose->io_base_virt;
-			res = &hose->io_resource;
-			res->flags = IORESOURCE_IO;
-			res->start = ranges[2];
-			DBG("PCI: IO 0x%llx -> 0x%llx\n",
-			    (u64)res->start, (u64)res->start + size - 1);
-			break;
-		case 2:		/* memory space */
-			memno = 0;
-			if (ranges[1] == 0 && ranges[2] == 0
-			    && ranges[na+4] <= (16 << 20)) {
-				/* 1st 16MB, i.e. ISA memory area */
-				if (primary)
-					isa_mem_base = ranges[na+2];
-				memno = 1;
-			}
-			while (memno < 3 && hose->mem_resources[memno].flags)
-				++memno;
-			if (memno == 0)
-				hose->pci_mem_offset = ranges[na+2] - ranges[2];
-			if (memno < 3) {
-				res = &hose->mem_resources[memno];
-				res->flags = IORESOURCE_MEM;
-				if(ranges[0] & 0x40000000)
-					res->flags |= IORESOURCE_PREFETCH;
-				res->start = ranges[na+2];
-				DBG("PCI: MEM[%d] 0x%llx -> 0x%llx\n", memno,
-				    (u64)res->start, (u64)res->start + size - 1);
-			}
-			break;
-		}
-		if (res != NULL) {
-			res->name = dev->full_name;
-			res->end = res->start + size - 1;
-			res->parent = NULL;
-			res->sibling = NULL;
-			res->child = NULL;
-		}
-		ranges += np;
-	}
-}
-
 /* We create the "pci-OF-bus-map" property now so it appears in the
  * /proc device tree
  */
Index: linux-work/arch/powerpc/kernel/pci_64.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/pci_64.c	2007-12-03 11:48:04.000000000 +1100
+++ linux-work/arch/powerpc/kernel/pci_64.c	2007-12-03 12:01:02.000000000 +1100
@@ -592,99 +592,6 @@ int pci_proc_domain(struct pci_bus *bus)
 	}
 }
 
-void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
-					    struct device_node *dev, int prim)
-{
-	const unsigned int *ranges;
-	unsigned int pci_space;
-	unsigned long size;
-	int rlen = 0;
-	int memno = 0;
-	struct resource *res;
-	int np, na = of_n_addr_cells(dev);
-	unsigned long pci_addr, cpu_phys_addr;
-
-	np = na + 5;
-
-	/* From "PCI Binding to 1275"
-	 * The ranges property is laid out as an array of elements,
-	 * each of which comprises:
-	 *   cells 0 - 2:	a PCI address
-	 *   cells 3 or 3+4:	a CPU physical address
-	 *			(size depending on dev->n_addr_cells)
-	 *   cells 4+5 or 5+6:	the size of the range
-	 */
-	ranges = of_get_property(dev, "ranges", &rlen);
-	if (ranges == NULL)
-		return;
-	hose->io_base_phys = 0;
-	while ((rlen -= np * sizeof(unsigned int)) >= 0) {
-		res = NULL;
-		pci_space = ranges[0];
-		pci_addr = ((unsigned long)ranges[1] << 32) | ranges[2];
-		cpu_phys_addr = of_translate_address(dev, &ranges[3]);
-		size = ((unsigned long)ranges[na+3] << 32) | ranges[na+4];
-		ranges += np;
-		if (size == 0)
-			continue;
-
-		/* Now consume following elements while they are contiguous */
-		while (rlen >= np * sizeof(unsigned int)) {
-			unsigned long addr, phys;
-
-			if (ranges[0] != pci_space)
-				break;
-			addr = ((unsigned long)ranges[1] << 32) | ranges[2];
-			phys = ranges[3];
-			if (na >= 2)
-				phys = (phys << 32) | ranges[4];
-			if (addr != pci_addr + size ||
-			    phys != cpu_phys_addr + size)
-				break;
-
-			size += ((unsigned long)ranges[na+3] << 32)
-				| ranges[na+4];
-			ranges += np;
-			rlen -= np * sizeof(unsigned int);
-		}
-
-		switch ((pci_space >> 24) & 0x3) {
-		case 1:		/* I/O space */
-			hose->io_base_phys = cpu_phys_addr - pci_addr;
-			/* handle from 0 to top of I/O window */
-			hose->pci_io_size = pci_addr + size;
-
-			res = &hose->io_resource;
-			res->flags = IORESOURCE_IO;
-			res->start = pci_addr;
-			DBG("phb%d: IO 0x%lx -> 0x%lx\n", hose->global_number,
-				    res->start, res->start + size - 1);
-			break;
-		case 2:		/* memory space */
-			memno = 0;
-			while (memno < 3 && hose->mem_resources[memno].flags)
-				++memno;
-
-			if (memno == 0)
-				hose->pci_mem_offset = cpu_phys_addr - pci_addr;
-			if (memno < 3) {
-				res = &hose->mem_resources[memno];
-				res->flags = IORESOURCE_MEM;
-				res->start = cpu_phys_addr;
-				DBG("phb%d: MEM 0x%lx -> 0x%lx\n", hose->global_number,
-					    res->start, res->start + size - 1);
-			}
-			break;
-		}
-		if (res != NULL) {
-			res->name = dev->full_name;
-			res->end = res->start + size - 1;
-			res->parent = NULL;
-			res->sibling = NULL;
-			res->child = NULL;
-		}
-	}
-}
 
 #ifdef CONFIG_HOTPLUG
 
Index: linux-work/include/asm-powerpc/pci-bridge.h
===================================================================
--- linux-work.orig/include/asm-powerpc/pci-bridge.h	2007-12-03 11:48:04.000000000 +1100
+++ linux-work/include/asm-powerpc/pci-bridge.h	2007-12-03 12:01:02.000000000 +1100
@@ -27,6 +27,7 @@ struct pci_controller {
 
 	void __iomem *io_base_virt;
 	resource_size_t io_base_phys;
+	resource_size_t pci_io_size;
 
 	/* Some machines (PReP) have a non 1:1 mapping of
 	 * the PCI memory space in the CPU bus space

[PATCH 1/25] powerpc: Make isa_mem_base common to 32 and 64 bits

[Benjamin Herrenschmidt]

This defines isa_mem_base on both 32 and 64 bits (it used to be 32 bits
only). This avoids a few ifdef's in later patches and potentially can
allow support for VGA text mode on 64 bits powerpc.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Small cleanup pre-requisite for my next patch

 arch/powerpc/kernel/pci-common.c |    4 ++++
 arch/powerpc/kernel/pci_32.c     |    1 -
 include/asm-powerpc/io.h         |    5 +++--
 3 files changed, 7 insertions(+), 3 deletions(-)

Index: linux-work/arch/powerpc/kernel/pci-common.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/pci-common.c	2007-11-20 14:42:49.000000000 +1100
+++ linux-work/arch/powerpc/kernel/pci-common.c	2007-11-20 15:03:02.000000000 +1100
@@ -52,6 +52,10 @@ int global_phb_number;		/* Global phb co
 
 extern struct list_head hose_list;
 
+/* ISA Memory physical address */
+resource_size_t isa_mem_base;
+
+
 /*
  * pci_controller(phb) initialized common variables.
  */
Index: linux-work/include/asm-powerpc/io.h
===================================================================
--- linux-work.orig/include/asm-powerpc/io.h	2007-11-20 14:42:49.000000000 +1100
+++ linux-work/include/asm-powerpc/io.h	2007-11-20 14:47:11.000000000 +1100
@@ -50,15 +50,16 @@ extern int check_legacy_ioport(unsigned 
 #define PCI_DRAM_OFFSET	pci_dram_offset
 #else
 #define _IO_BASE	pci_io_base
-#define _ISA_MEM_BASE	0
+#define _ISA_MEM_BASE	isa_mem_base
 #define PCI_DRAM_OFFSET	0
 #endif
 
 extern unsigned long isa_io_base;
-extern unsigned long isa_mem_base;
 extern unsigned long pci_io_base;
 extern unsigned long pci_dram_offset;
 
+extern resource_size_t isa_mem_base;
+
 #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_INDIRECT_IO)
 #error CONFIG_PPC_INDIRECT_IO is not yet supported on 32 bits
 #endif
Index: linux-work/arch/powerpc/kernel/pci_32.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/pci_32.c	2007-11-20 14:42:49.000000000 +1100
+++ linux-work/arch/powerpc/kernel/pci_32.c	2007-11-20 15:02:43.000000000 +1100
@@ -32,7 +32,6 @@
 #endif
 
 unsigned long isa_io_base     = 0;
-unsigned long isa_mem_base    = 0;
 unsigned long pci_dram_offset = 0;
 int pcibios_assign_bus_offset = 1;
 

[PATCH 3/25] powerpc: Fix powerpc 32 bits resource fixup for 64 bits resources

[Benjamin Herrenschmidt]

The 32bits powerpc resource fixup code uses unsigned longs to do the
offseting of resources which overflows on platforms such as 4xx where
resources can be 64 bits.

This fixes it by using resource_size_t instead.

However, the IO stuff does rely on some 32 bits arithmetic, so we hack
by cropping the result of the fixups for IO resources with a 32 bits
mask.

This isn't the prettiest but should work for now until we change the
32 bits PCI code to do IO mappings like 64 bits does, within a reserved
are of the kernel address space.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

This needs some regression testing.

 arch/powerpc/kernel/pci_32.c |   46 ++++++++++++++++++++++++-------------------
 1 file changed, 26 insertions(+), 20 deletions(-)

Index: linux-work/arch/powerpc/kernel/pci_32.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/pci_32.c	2007-12-03 12:01:02.000000000 +1100
+++ linux-work/arch/powerpc/kernel/pci_32.c	2007-12-03 12:05:49.000000000 +1100
@@ -104,7 +104,7 @@ pcibios_fixup_resources(struct pci_dev *
 {
 	struct pci_controller* hose = (struct pci_controller *)dev->sysdata;
 	int i;
-	unsigned long offset;
+	resource_size_t offset, mask;
 
 	if (!hose) {
 		printk(KERN_ERR "No hose for PCI dev %s!\n", pci_name(dev));
@@ -123,15 +123,17 @@ pcibios_fixup_resources(struct pci_dev *
 			continue;
 		}
 		offset = 0;
+		mask = (resource_size_t)-1;
 		if (res->flags & IORESOURCE_MEM) {
 			offset = hose->pci_mem_offset;
 		} else if (res->flags & IORESOURCE_IO) {
 			offset = (unsigned long) hose->io_base_virt
 				- isa_io_base;
+			mask = 0xffffffffu;
 		}
 		if (offset != 0) {
-			res->start += offset;
-			res->end += offset;
+			res->start = (res->start + offset) & mask;
+			res->end = (res->end + offset) & mask;
 			DBG("Fixup res %d (%lx) of dev %s: %llx -> %llx\n",
 			    i, res->flags, pci_name(dev),
 			    (u64)res->start - offset, (u64)res->start);
@@ -147,30 +149,32 @@ DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID,		PC
 void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
 			struct resource *res)
 {
-	unsigned long offset = 0;
+	resource_size_t offset = 0, mask = (resource_size_t)-1;
 	struct pci_controller *hose = dev->sysdata;
 
-	if (hose && res->flags & IORESOURCE_IO)
+	if (hose && res->flags & IORESOURCE_IO) {
 		offset = (unsigned long)hose->io_base_virt - isa_io_base;
-	else if (hose && res->flags & IORESOURCE_MEM)
+		mask = 0xffffffffu;
+	} else if (hose && res->flags & IORESOURCE_MEM)
 		offset = hose->pci_mem_offset;
-	region->start = res->start - offset;
-	region->end = res->end - offset;
+	region->start = (res->start - offset) & mask;
+	region->end = (res->end - offset) & mask;
 }
 EXPORT_SYMBOL(pcibios_resource_to_bus);
 
 void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
 			     struct pci_bus_region *region)
 {
-	unsigned long offset = 0;
+	resource_size_t offset = 0, mask = (resource_size_t)-1;
 	struct pci_controller *hose = dev->sysdata;
 
-	if (hose && res->flags & IORESOURCE_IO)
+	if (hose && res->flags & IORESOURCE_IO) {
 		offset = (unsigned long)hose->io_base_virt - isa_io_base;
-	else if (hose && res->flags & IORESOURCE_MEM)
+		mask = 0xffffffffu;
+	} else if (hose && res->flags & IORESOURCE_MEM)
 		offset = hose->pci_mem_offset;
-	res->start = region->start + offset;
-	res->end = region->end + offset;
+	res->start = (region->start + offset) & mask;
+	res->end = (region->end + offset) & mask;
 }
 EXPORT_SYMBOL(pcibios_bus_to_resource);
 
@@ -334,9 +338,9 @@ static int __init
 pci_relocate_bridge_resource(struct pci_bus *bus, int i)
 {
 	struct resource *res, *pr, *conflict;
-	unsigned long try, size;
-	int j;
+	resource_size_t try, size;
 	struct pci_bus *parent = bus->parent;
+	int j;
 
 	if (parent == NULL) {
 		/* shouldn't ever happen */
@@ -438,7 +442,7 @@ update_bridge_resource(struct pci_dev *d
 	u8 io_base_lo, io_limit_lo;
 	u16 mem_base, mem_limit;
 	u16 cmd;
-	unsigned long start, end, off;
+	resource_size_t start, end, off;
 	struct pci_controller *hose = dev->sysdata;
 
 	if (!hose) {
@@ -1157,8 +1161,8 @@ void pcibios_fixup_bus(struct pci_bus *b
 			res->end = IO_SPACE_LIMIT;
 			res->flags = IORESOURCE_IO;
 		}
-		res->start += io_offset;
-		res->end += io_offset;
+		res->start = (res->start + io_offset) & 0xffffffffu;
+		res->end = (res->end + io_offset) & 0xffffffffu;
 
 		for (i = 0; i < 3; ++i) {
 			res = &hose->mem_resources[i];
@@ -1183,8 +1187,10 @@ void pcibios_fixup_bus(struct pci_bus *b
 			if (!res->flags || bus->self->transparent)
 				continue;
 			if (io_offset && (res->flags & IORESOURCE_IO)) {
-				res->start += io_offset;
-				res->end += io_offset;
+				res->start = (res->start + io_offset) &
+					0xffffffffu;
+				res->end = (res->end + io_offset) &
+					0xffffffffu;
 			} else if (hose->pci_mem_offset
 				   && (res->flags & IORESOURCE_MEM)) {
 				res->start += hose->pci_mem_offset;

[PATCH 4/25] powerpc: Reworking machine check handling and Fix 440/440A

[Benjamin Herrenschmidt]

This adds a cputable function pointer for the CPU-side machine
check handling. The semantic is still the same as the old one,
the one in ppc_md. overrides the one in cputable, though
ultimately we'll want to change that so the CPU gets first.

This removes CONFIG_440A which was a problem for multiplatform
kernels and instead fixes up the IVOR at runtime from a setup_cpu
function. The "A" version of the machine check also tweaks the
regs->trap value to differenciate the 2 versions at the C level.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/kernel/cpu_setup_44x.S |    9 +++
 arch/powerpc/kernel/cputable.c      |  105 ++++++++++++++++++++++++++++++++++++
 arch/powerpc/kernel/head_44x.S      |   14 +++-
 arch/powerpc/kernel/head_booke.h    |    2 
 arch/powerpc/kernel/traps.c         |   62 ++++++++++++++++-----
 arch/powerpc/platforms/44x/Kconfig  |    5 -
 include/asm-powerpc/cputable.h      |   13 ++++
 include/asm-powerpc/ptrace.h        |    3 -
 include/asm-powerpc/reg_booke.h     |    3 -
 9 files changed, 190 insertions(+), 26 deletions(-)

Index: linux-work/arch/powerpc/kernel/cpu_setup_44x.S
===================================================================
--- linux-work.orig/arch/powerpc/kernel/cpu_setup_44x.S	2007-12-03 11:48:03.000000000 +1100
+++ linux-work/arch/powerpc/kernel/cpu_setup_44x.S	2007-12-03 14:40:28.000000000 +1100
@@ -23,11 +23,20 @@ _GLOBAL(__setup_cpu_440epx)
 	mflr	r4
 	bl	__init_fpu_44x
 	bl	__plb_disable_wrp
+	bl	__fixup_440A_mcheck
 	mtlr	r4
 	blr
 _GLOBAL(__setup_cpu_440grx)
 	b	__plb_disable_wrp
+_GLOBAL(__setup_cpu_440gx)
+_GLOBAL(__setup_cpu_440spe)
+	b	__fixup_440A_mcheck
 
+ /* Temporary fixup for arch/ppc until we kill the whole thing */
+#ifndef CONFIG_PPC_MERGE
+_GLOBAL(__fixup_440A_mcheck)
+	blr
+#endif
 
 /* enable APU between CPU and FPU */
 _GLOBAL(__init_fpu_44x)
Index: linux-work/arch/powerpc/kernel/cputable.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/cputable.c	2007-12-03 11:48:03.000000000 +1100
+++ linux-work/arch/powerpc/kernel/cputable.c	2007-12-03 14:46:51.000000000 +1100
@@ -33,7 +33,9 @@ EXPORT_SYMBOL(cur_cpu_spec);
 #ifdef CONFIG_PPC32
 extern void __setup_cpu_440ep(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_440epx(unsigned long offset, struct cpu_spec* spec);
+extern void __setup_cpu_440gx(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_440grx(unsigned long offset, struct cpu_spec* spec);
+extern void __setup_cpu_440spe(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_603(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_604(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_750(unsigned long offset, struct cpu_spec* spec);
@@ -85,6 +87,7 @@ static struct cpu_spec __initdata cpu_sp
 		.pmc_type		= PPC_PMC_IBM,
 		.oprofile_cpu_type	= "ppc64/power3",
 		.oprofile_type		= PPC_OPROFILE_RS64,
+		.machine_check		= machine_check_generic,
 		.platform		= "power3",
 	},
 	{	/* Power3+ */
@@ -99,6 +102,7 @@ static struct cpu_spec __initdata cpu_sp
 		.pmc_type		= PPC_PMC_IBM,
 		.oprofile_cpu_type	= "ppc64/power3",
 		.oprofile_type		= PPC_OPROFILE_RS64,
+		.machine_check		= machine_check_generic,
 		.platform		= "power3",
 	},
 	{	/* Northstar */
@@ -113,6 +117,7 @@ static struct cpu_spec __initdata cpu_sp
 		.pmc_type		= PPC_PMC_IBM,
 		.oprofile_cpu_type	= "ppc64/rs64",
 		.oprofile_type		= PPC_OPROFILE_RS64,
+		.machine_check		= machine_check_generic,
 		.platform		= "rs64",
 	},
 	{	/* Pulsar */
@@ -127,6 +132,7 @@ static struct cpu_spec __initdata cpu_sp
 		.pmc_type		= PPC_PMC_IBM,
 		.oprofile_cpu_type	= "ppc64/rs64",
 		.oprofile_type		= PPC_OPROFILE_RS64,
+		.machine_check		= machine_check_generic,
 		.platform		= "rs64",
 	},
 	{	/* I-star */
@@ -141,6 +147,7 @@ static struct cpu_spec __initdata cpu_sp
 		.pmc_type		= PPC_PMC_IBM,
 		.oprofile_cpu_type	= "ppc64/rs64",
 		.oprofile_type		= PPC_OPROFILE_RS64,
+		.machine_check		= machine_check_generic,
 		.platform		= "rs64",
 	},
 	{	/* S-star */
@@ -155,6 +162,7 @@ static struct cpu_spec __initdata cpu_sp
 		.pmc_type		= PPC_PMC_IBM,
 		.oprofile_cpu_type	= "ppc64/rs64",
 		.oprofile_type		= PPC_OPROFILE_RS64,
+		.machine_check		= machine_check_generic,
 		.platform		= "rs64",
 	},
 	{	/* Power4 */
@@ -169,6 +177,7 @@ static struct cpu_spec __initdata cpu_sp
 		.pmc_type		= PPC_PMC_IBM,
 		.oprofile_cpu_type	= "ppc64/power4",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
+		.machine_check		= machine_check_generic,
 		.platform		= "power4",
 	},
 	{	/* Power4+ */
@@ -183,6 +192,7 @@ static struct cpu_spec __initdata cpu_sp
 		.pmc_type		= PPC_PMC_IBM,
 		.oprofile_cpu_type	= "ppc64/power4",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
+		.machine_check		= machine_check_generic,
 		.platform		= "power4",
 	},
 	{	/* PPC970 */
@@ -200,6 +210,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_restore		= __restore_cpu_ppc970,
 		.oprofile_cpu_type	= "ppc64/970",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc970",
 	},
 	{	/* PPC970FX */
@@ -217,6 +228,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_restore		= __restore_cpu_ppc970,
 		.oprofile_cpu_type	= "ppc64/970",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc970",
 	},
 	{	/* PPC970MP DD1.0 - no DEEPNAP, use regular 970 init */
@@ -234,6 +246,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_restore		= __restore_cpu_ppc970,
 		.oprofile_cpu_type	= "ppc64/970MP",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc970",
 	},
 	{	/* PPC970MP */
@@ -251,6 +264,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_restore		= __restore_cpu_ppc970,
 		.oprofile_cpu_type	= "ppc64/970MP",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc970",
 	},
 	{	/* PPC970GX */
@@ -267,6 +281,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_ppc970,
 		.oprofile_cpu_type	= "ppc64/970",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc970",
 	},
 	{	/* Power5 GR */
@@ -286,6 +301,7 @@ static struct cpu_spec __initdata cpu_sp
 		 */
 		.oprofile_mmcra_sihv	= MMCRA_SIHV,
 		.oprofile_mmcra_sipr	= MMCRA_SIPR,
+		.machine_check		= machine_check_generic,
 		.platform		= "power5",
 	},
 	{	/* Power5++ */
@@ -301,6 +317,7 @@ static struct cpu_spec __initdata cpu_sp
 		.oprofile_type		= PPC_OPROFILE_POWER4,
 		.oprofile_mmcra_sihv	= MMCRA_SIHV,
 		.oprofile_mmcra_sipr	= MMCRA_SIPR,
+		.machine_check		= machine_check_generic,
 		.platform		= "power5+",
 	},
 	{	/* Power5 GS */
@@ -317,6 +334,7 @@ static struct cpu_spec __initdata cpu_sp
 		.oprofile_type		= PPC_OPROFILE_POWER4,
 		.oprofile_mmcra_sihv	= MMCRA_SIHV,
 		.oprofile_mmcra_sipr	= MMCRA_SIPR,
+		.machine_check		= machine_check_generic,
 		.platform		= "power5+",
 	},
 	{	/* POWER6 in P5+ mode; 2.04-compliant processor */
@@ -327,6 +345,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_POWER5_PLUS,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.machine_check		= machine_check_generic,
 		.platform		= "power5+",
 	},
 	{	/* Power6 */
@@ -346,6 +365,7 @@ static struct cpu_spec __initdata cpu_sp
 		.oprofile_mmcra_sipr	= POWER6_MMCRA_SIPR,
 		.oprofile_mmcra_clear	= POWER6_MMCRA_THRM |
 			POWER6_MMCRA_OTHER,
+		.machine_check		= machine_check_generic,
 		.platform		= "power6x",
 	},
 	{	/* 2.05-compliant processor, i.e. Power6 "architected" mode */
@@ -356,6 +376,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_POWER6,
 		.icache_bsize		= 128,
 		.dcache_bsize		= 128,
+		.machine_check		= machine_check_generic,
 		.platform		= "power6",
 	},
 	{	/* Cell Broadband Engine */
@@ -372,6 +393,7 @@ static struct cpu_spec __initdata cpu_sp
 		.pmc_type		= PPC_PMC_IBM,
 		.oprofile_cpu_type	= "ppc64/cell-be",
 		.oprofile_type		= PPC_OPROFILE_CELL,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc-cell-be",
 	},
 	{	/* PA Semi PA6T */
@@ -388,6 +410,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_restore		= __restore_cpu_pa6t,
 		.oprofile_cpu_type	= "ppc64/pa6t",
 		.oprofile_type		= PPC_OPROFILE_PA6T,
+		.machine_check		= machine_check_generic,
 		.platform		= "pa6t",
 	},
 	{	/* default match */
@@ -400,6 +423,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 128,
 		.num_pmcs		= 6,
 		.pmc_type		= PPC_PMC_IBM,
+		.machine_check		= machine_check_generic,
 		.platform		= "power4",
 	}
 #endif	/* CONFIG_PPC64 */
@@ -414,6 +438,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_UNIFIED_CACHE | PPC_FEATURE_NO_TB,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc601",
 	},
 	{	/* 603 */
@@ -425,6 +450,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_603,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc603",
 	},
 	{	/* 603e */
@@ -436,6 +462,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_603,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc603",
 	},
 	{	/* 603ev */
@@ -447,6 +474,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_603,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc603",
 	},
 	{	/* 604 */
@@ -459,6 +487,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 2,
 		.cpu_setup		= __setup_cpu_604,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc604",
 	},
 	{	/* 604e */
@@ -471,6 +500,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_604,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc604",
 	},
 	{	/* 604r */
@@ -483,6 +513,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_604,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc604",
 	},
 	{	/* 604ev */
@@ -495,6 +526,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_604,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc604",
 	},
 	{	/* 740/750 (0x4202, don't support TAU ?) */
@@ -507,6 +539,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 750CX (80100 and 8010x?) */
@@ -519,6 +552,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750cx,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 750CX (82201 and 82202) */
@@ -531,6 +565,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750cx,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 750CXe (82214) */
@@ -543,6 +578,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750cx,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 750CXe "Gekko" (83214) */
@@ -555,6 +591,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750cx,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 750CL */
@@ -567,6 +604,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 745/755 */
@@ -579,6 +617,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 750FX rev 1.x */
@@ -591,6 +630,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 750FX rev 2.0 must disable HID0[DPM] */
@@ -603,6 +643,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 750FX (All revs except 2.0) */
@@ -615,6 +656,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750fx,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 750GX */
@@ -627,6 +669,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750fx,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 740/750 (L2CR bit need fixup for 740) */
@@ -639,6 +682,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_750,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc750",
 	},
 	{	/* 7400 rev 1.1 ? (no TAU) */
@@ -652,6 +696,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_7400,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7400",
 	},
 	{	/* 7400 */
@@ -665,6 +710,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_7400,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7400",
 	},
 	{	/* 7410 */
@@ -678,6 +724,7 @@ static struct cpu_spec __initdata cpu_sp
 		.dcache_bsize		= 32,
 		.num_pmcs		= 4,
 		.cpu_setup		= __setup_cpu_7410,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7400",
 	},
 	{	/* 7450 2.0 - no doze/nap */
@@ -693,6 +740,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 7450 2.1 */
@@ -708,6 +756,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 7450 2.3 and newer */
@@ -723,6 +772,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 7455 rev 1.x */
@@ -738,6 +788,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 7455 rev 2.0 */
@@ -753,6 +804,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 7455 others */
@@ -768,6 +820,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 7447/7457 Rev 1.0 */
@@ -783,6 +836,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 7447/7457 Rev 1.1 */
@@ -798,6 +852,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 7447/7457 Rev 1.2 and later */
@@ -812,6 +867,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 7447A */
@@ -827,6 +883,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 7448 */
@@ -842,6 +899,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_setup		= __setup_cpu_745x,
 		.oprofile_cpu_type      = "ppc/7450",
 		.oprofile_type		= PPC_OPROFILE_G4,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc7450",
 	},
 	{	/* 82xx (8240, 8245, 8260 are all 603e cores) */
@@ -853,6 +911,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_603,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc603",
 	},
 	{	/* All G2_LE (603e core, plus some) have the same pvr */
@@ -864,6 +923,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_603,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc603",
 	},
 	{	/* e300c1 (a 603e core, plus some) on 83xx */
@@ -875,6 +935,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_603,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc603",
 	},
 	{	/* e300c2 (an e300c1 core, plus some, minus FPU) on 83xx */
@@ -886,6 +947,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_603,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc603",
 	},
 	{	/* e300c3 on 83xx  */
@@ -897,6 +959,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_603,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc603",
 	},
 	{	/* default match, we assume split I/D cache & TB (non-601)... */
@@ -907,6 +970,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_generic,
 		.platform		= "ppc603",
 	},
 #endif /* CLASSIC_PPC */
@@ -933,6 +997,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU,
 		.icache_bsize		= 16,
 		.dcache_bsize		= 16,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc403",
 	},
 	{	/* 403GCX */
@@ -944,6 +1009,7 @@ static struct cpu_spec __initdata cpu_sp
 		 	PPC_FEATURE_HAS_MMU | PPC_FEATURE_NO_TB,
 		.icache_bsize		= 16,
 		.dcache_bsize		= 16,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc403",
 	},
 	{	/* 403G ?? */
@@ -954,6 +1020,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU,
 		.icache_bsize		= 16,
 		.dcache_bsize		= 16,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc403",
 	},
 	{	/* 405GP */
@@ -965,6 +1032,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{	/* STB 03xxx */
@@ -976,6 +1044,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{	/* STB 04xxx */
@@ -987,6 +1056,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{	/* NP405L */
@@ -998,6 +1068,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{	/* NP4GS3 */
@@ -1009,6 +1080,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{   /* NP405H */
@@ -1020,6 +1092,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{	/* 405GPr */
@@ -1031,6 +1104,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{   /* STBx25xx */
@@ -1042,6 +1116,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{	/* 405LP */
@@ -1052,6 +1127,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{	/* Xilinx Virtex-II Pro  */
@@ -1063,6 +1139,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{	/* Xilinx Virtex-4 FX */
@@ -1074,6 +1151,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{	/* 405EP */
@@ -1085,6 +1163,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 	{	/* 405EX */
@@ -1096,6 +1175,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc405",
 	},
 
@@ -1109,6 +1189,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_BOOKE,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc440",
 	},
 	{ /* Use logical PVR for 440EP (logical pvr = pvr | 0x8) */
@@ -1120,6 +1201,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_440ep,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc440",
 	},
 	{
@@ -1130,6 +1212,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc440",
 	},
 	{ /* Use logical PVR for 440EP (logical pvr = pvr | 0x8) */
@@ -1141,6 +1224,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_440ep,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc440",
 	},
 	{ /* 440GRX */
@@ -1152,6 +1236,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_440grx,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc440",
 	},
 	{ /* Use logical PVR for 440EPx (logical pvr = pvr | 0x8) */
@@ -1163,6 +1248,7 @@ static struct cpu_spec __initdata cpu_sp
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 		.cpu_setup		= __setup_cpu_440epx,
+		.machine_check		= machine_check_440A,
 		.platform		= "ppc440",
 	},
 	{	/* 440GP Rev. B */
@@ -1173,6 +1259,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_BOOKE,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc440gp",
 	},
 	{	/* 440GP Rev. C */
@@ -1183,6 +1270,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_BOOKE,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc440gp",
 	},
 	{ /* 440GX Rev. A */
@@ -1193,6 +1281,8 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_BOOKE,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.cpu_setup		= __setup_cpu_440gx,
+		.machine_check		= machine_check_440A,
 		.platform		= "ppc440",
 	},
 	{ /* 440GX Rev. B */
@@ -1203,6 +1293,8 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_BOOKE,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.cpu_setup		= __setup_cpu_440gx,
+		.machine_check		= machine_check_440A,
 		.platform		= "ppc440",
 	},
 	{ /* 440GX Rev. C */
@@ -1213,6 +1305,8 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_BOOKE,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.cpu_setup		= __setup_cpu_440gx,
+		.machine_check		= machine_check_440A,
 		.platform		= "ppc440",
 	},
 	{ /* 440GX Rev. F */
@@ -1223,6 +1317,8 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_BOOKE,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.cpu_setup		= __setup_cpu_440gx,
+		.machine_check		= machine_check_440A,
 		.platform		= "ppc440",
 	},
 	{ /* 440SP Rev. A */
@@ -1233,6 +1329,7 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_BOOKE,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_4xx,
 		.platform		= "ppc440",
 	},
 	{ /* 440SPe Rev. A */
@@ -1243,6 +1340,8 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features      = COMMON_USER_BOOKE,
 		.icache_bsize           = 32,
 		.dcache_bsize           = 32,
+		.cpu_setup		= __setup_cpu_440spe,
+		.machine_check		= machine_check_440A,
 		.platform               = "ppc440",
 	},
 	{ /* 440SPe Rev. B */
@@ -1253,6 +1352,8 @@ static struct cpu_spec __initdata cpu_sp
 		.cpu_user_features	= COMMON_USER_BOOKE,
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
+		.cpu_setup		= __setup_cpu_440spe,
+		.machine_check		= machine_check_440A,
 		.platform		= "ppc440",
 	},
 #endif /* CONFIG_44x */
@@ -1267,6 +1368,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_EFP_SINGLE |
 			PPC_FEATURE_UNIFIED_CACHE,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_e200,
 		.platform		= "ppc5554",
 	},
 	{	/* e200z6 */
@@ -1280,6 +1382,7 @@ static struct cpu_spec __initdata cpu_sp
 			PPC_FEATURE_HAS_EFP_SINGLE_COMP |
 			PPC_FEATURE_UNIFIED_CACHE,
 		.dcache_bsize		= 32,
+		.machine_check		= machine_check_e200,
 		.platform		= "ppc5554",
 	},
 	{	/* e500 */
@@ -1296,6 +1399,7 @@ static struct cpu_spec __initdata cpu_sp
 		.num_pmcs		= 4,
 		.oprofile_cpu_type	= "ppc/e500",
 		.oprofile_type		= PPC_OPROFILE_BOOKE,
+		.machine_check		= machine_check_e500,
 		.platform		= "ppc8540",
 	},
 	{	/* e500v2 */
@@ -1313,6 +1417,7 @@ static struct cpu_spec __initdata cpu_sp
 		.num_pmcs		= 4,
 		.oprofile_cpu_type	= "ppc/e500",
 		.oprofile_type		= PPC_OPROFILE_BOOKE,
+		.machine_check		= machine_check_e500,
 		.platform		= "ppc8548",
 	},
 #endif
Index: linux-work/arch/powerpc/kernel/head_44x.S
===================================================================
--- linux-work.orig/arch/powerpc/kernel/head_44x.S	2007-12-03 11:48:03.000000000 +1100
+++ linux-work/arch/powerpc/kernel/head_44x.S	2007-12-03 12:05:58.000000000 +1100
@@ -289,11 +289,8 @@ interrupt_base:
 	CRITICAL_EXCEPTION(0x0100, CriticalInput, unknown_exception)
 
 	/* Machine Check Interrupt */
-#ifdef CONFIG_440A
-	MCHECK_EXCEPTION(0x0200, MachineCheck, machine_check_exception)
-#else
 	CRITICAL_EXCEPTION(0x0200, MachineCheck, machine_check_exception)
-#endif
+	MCHECK_EXCEPTION(0x0210, MachineCheckA, machine_check_exception)
 
 	/* Data Storage Interrupt */
 	START_EXCEPTION(DataStorage)
@@ -674,6 +671,15 @@ finish_tlb_load:
  */
 
 /*
+ * Adjust the machine check IVOR on 440A cores
+ */
+_GLOBAL(__fixup_440A_mcheck)
+	li	r3,MachineCheckA@l
+	mtspr	SPRN_IVOR1,r3
+	sync
+	blr
+
+/*
  * extern void giveup_altivec(struct task_struct *prev)
  *
  * The 44x core does not have an AltiVec unit.
Index: linux-work/arch/powerpc/kernel/traps.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/traps.c	2007-12-03 11:48:03.000000000 +1100
+++ linux-work/arch/powerpc/kernel/traps.c	2007-12-03 15:00:10.000000000 +1100
@@ -334,18 +334,25 @@ static inline int check_io_access(struct
 #define clear_single_step(regs)	((regs)->msr &= ~MSR_SE)
 #endif
 
-static int generic_machine_check_exception(struct pt_regs *regs)
+#if defined(CONFIG_4xx)
+int machine_check_4xx(struct pt_regs *regs)
 {
 	unsigned long reason = get_mc_reason(regs);
 
-#if defined(CONFIG_4xx) && !defined(CONFIG_440A)
 	if (reason & ESR_IMCP) {
 		printk("Instruction");
 		mtspr(SPRN_ESR, reason & ~ESR_IMCP);
 	} else
 		printk("Data");
 	printk(" machine check in kernel mode.\n");
-#elif defined(CONFIG_440A)
+
+	return 0;
+}
+
+int machine_check_440A(struct pt_regs *regs)
+{
+	unsigned long reason = get_mc_reason(regs);
+
 	printk("Machine check in kernel mode.\n");
 	if (reason & ESR_IMCP){
 		printk("Instruction Synchronous Machine Check exception\n");
@@ -375,7 +382,13 @@ static int generic_machine_check_excepti
 		/* Clear MCSR */
 		mtspr(SPRN_MCSR, mcsr);
 	}
-#elif defined (CONFIG_E500)
+	return 0;
+}
+#elif defined(CONFIG_E500)
+int machine_check_e500(struct pt_regs *regs)
+{
+	unsigned long reason = get_mc_reason(regs);
+
 	printk("Machine check in kernel mode.\n");
 	printk("Caused by (from MCSR=%lx): ", reason);
 
@@ -403,7 +416,14 @@ static int generic_machine_check_excepti
 		printk("Bus - Instruction Parity Error\n");
 	if (reason & MCSR_BUS_RPERR)
 		printk("Bus - Read Parity Error\n");
-#elif defined (CONFIG_E200)
+
+	return 0;
+}
+#elif defined(CONFIG_E200)
+int machine_check_e200(struct pt_regs *regs)
+{
+	unsigned long reason = get_mc_reason(regs);
+
 	printk("Machine check in kernel mode.\n");
 	printk("Caused by (from MCSR=%lx): ", reason);
 
@@ -421,7 +441,14 @@ static int generic_machine_check_excepti
 		printk("Bus - Read Bus Error on data load\n");
 	if (reason & MCSR_BUS_WRERR)
 		printk("Bus - Write Bus Error on buffered store or cache line push\n");
-#else /* !CONFIG_4xx && !CONFIG_E500 && !CONFIG_E200 */
+
+	return 0;
+}
+#else
+int machine_check_generic(struct pt_regs *regs)
+{
+	unsigned long reason = get_mc_reason(regs);
+
 	printk("Machine check in kernel mode.\n");
 	printk("Caused by (from SRR1=%lx): ", reason);
 	switch (reason & 0x601F0000) {
@@ -451,22 +478,26 @@ static int generic_machine_check_excepti
 	default:
 		printk("Unknown values in msr\n");
 	}
-#endif /* CONFIG_4xx */
-
 	return 0;
 }
+#endif /* everything else */
 
 void machine_check_exception(struct pt_regs *regs)
 {
 	int recover = 0;
 
-	/* See if any machine dependent calls */
+	/* See if any machine dependent calls. In theory, we would want
+	 * to call the CPU first, and call the ppc_md. one if the CPU
+	 * one returns a positive number. However there is existing code
+	 * that assumes the board gets a first chance, so let's keep it
+	 * that way for now and fix things later. --BenH.
+	 */
 	if (ppc_md.machine_check_exception)
 		recover = ppc_md.machine_check_exception(regs);
-	else
-		recover = generic_machine_check_exception(regs);
+	else if (cur_cpu_spec->machine_check)
+		recover = cur_cpu_spec->machine_check(regs);
 
-	if (recover)
+	if (recover > 0)
 		return;
 
 	if (user_mode(regs)) {
@@ -476,7 +507,12 @@ void machine_check_exception(struct pt_r
 	}
 
 #if defined(CONFIG_8xx) && defined(CONFIG_PCI)
-	/* the qspan pci read routines can cause machine checks -- Cort */
+	/* the qspan pci read routines can cause machine checks -- Cort
+	 *
+	 * yuck !!! that totally needs to go away ! There are better ways
+	 * to deal with that than having a wart in the mcheck handler.
+	 * -- BenH
+	 */
 	bad_page_fault(regs, regs->dar, SIGBUS);
 	return;
 #endif
Index: linux-work/arch/powerpc/platforms/44x/Kconfig
===================================================================
--- linux-work.orig/arch/powerpc/platforms/44x/Kconfig	2007-12-03 11:48:03.000000000 +1100
+++ linux-work/arch/powerpc/platforms/44x/Kconfig	2007-12-03 14:28:01.000000000 +1100
@@ -62,11 +62,6 @@ config 440GX
 config 440SP
 	bool
 
-config 440A
-	bool
-	depends on 440GX || 440EPX
-	default y
-
 # 44x errata/workaround config symbols, selected by the CPU models above
 config IBM440EP_ERR42
 	bool
Index: linux-work/arch/powerpc/kernel/head_booke.h
===================================================================
--- linux-work.orig/arch/powerpc/kernel/head_booke.h	2007-12-03 11:48:03.000000000 +1100
+++ linux-work/arch/powerpc/kernel/head_booke.h	2007-12-03 12:05:58.000000000 +1100
@@ -166,7 +166,7 @@ label:
 	mfspr	r5,SPRN_ESR;					\
 	stw	r5,_ESR(r11);					\
 	addi	r3,r1,STACK_FRAME_OVERHEAD;			\
-	EXC_XFER_TEMPLATE(hdlr, n+2, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), \
+	EXC_XFER_TEMPLATE(hdlr, n+4, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), \
 			  NOCOPY, mcheck_transfer_to_handler,   \
 			  ret_from_mcheck_exc)
 
Index: linux-work/include/asm-powerpc/ptrace.h
===================================================================
--- linux-work.orig/include/asm-powerpc/ptrace.h	2007-12-03 11:48:03.000000000 +1100
+++ linux-work/include/asm-powerpc/ptrace.h	2007-12-03 12:05:58.000000000 +1100
@@ -106,7 +106,8 @@ extern int ptrace_put_reg(struct task_st
  */
 #define FULL_REGS(regs)		(((regs)->trap & 1) == 0)
 #ifndef __powerpc64__
-#define IS_CRITICAL_EXC(regs)	(((regs)->trap & 2) == 0)
+#define IS_CRITICAL_EXC(regs)	(((regs)->trap & 2) != 0)
+#define IS_MCHECK_EXC(regs)	(((regs)->trap & 4) != 0)
 #endif /* ! __powerpc64__ */
 #define TRAP(regs)		((regs)->trap & ~0xF)
 #ifdef __powerpc64__
Index: linux-work/include/asm-powerpc/reg_booke.h
===================================================================
--- linux-work.orig/include/asm-powerpc/reg_booke.h	2007-12-03 11:48:03.000000000 +1100
+++ linux-work/include/asm-powerpc/reg_booke.h	2007-12-03 12:05:58.000000000 +1100
@@ -207,7 +207,6 @@
 #define	CCR1_TCS	0x00000080 /* Timer Clock Select */
 
 /* Bit definitions for the MCSR. */
-#ifdef CONFIG_440A
 #define MCSR_MCS	0x80000000 /* Machine Check Summary */
 #define MCSR_IB		0x40000000 /* Instruction PLB Error */
 #define MCSR_DRB	0x20000000 /* Data Read PLB Error */
@@ -217,7 +216,7 @@
 #define MCSR_DCSP	0x02000000 /* D-Cache Search Parity Error */
 #define MCSR_DCFP	0x01000000 /* D-Cache Flush Parity Error */
 #define MCSR_IMPE	0x00800000 /* Imprecise Machine Check Exception */
-#endif
+
 #ifdef CONFIG_E500
 #define MCSR_MCP 	0x80000000UL /* Machine Check Input Pin */
 #define MCSR_ICPERR 	0x40000000UL /* I-Cache Parity Error */
Index: linux-work/include/asm-powerpc/cputable.h
===================================================================
--- linux-work.orig/include/asm-powerpc/cputable.h	2007-12-03 14:28:42.000000000 +1100
+++ linux-work/include/asm-powerpc/cputable.h	2007-12-03 14:56:04.000000000 +1100
@@ -57,6 +57,14 @@ enum powerpc_pmc_type {
 	PPC_PMC_PA6T = 2,
 };
 
+struct pt_regs;
+
+extern int machine_check_generic(struct pt_regs *regs);
+extern int machine_check_4xx(struct pt_regs *regs);
+extern int machine_check_440A(struct pt_regs *regs);
+extern int machine_check_e500(struct pt_regs *regs);
+extern int machine_check_e200(struct pt_regs *regs);
+
 /* NOTE WELL: Update identify_cpu() if fields are added or removed! */
 struct cpu_spec {
 	/* CPU is matched via (PVR & pvr_mask) == pvr_value */
@@ -97,6 +105,11 @@ struct cpu_spec {
 
 	/* Name of processor class, for the ELF AT_PLATFORM entry */
 	char		*platform;
+
+	/* Processor specific machine check handling. Return negative
+	 * if the error is fatal, 1 if it was fully recovered and 0 to
+	 * pass up (not CPU originated) */
+	int		(*machine_check)(struct pt_regs *regs);
 };
 
 extern struct cpu_spec		*cur_cpu_spec;

Re: [PATCH 4/25] powerpc: Reworking machine check handling and Fix 440/440A

[Josh Boyer]

On Thu, 06 Dec 2007 19:00:03 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> This adds a cputable function pointer for the CPU-side machine
> check handling. The semantic is still the same as the old one,
> the one in ppc_md. overrides the one in cputable, though
> ultimately we'll want to change that so the CPU gets first.
> 
> This removes CONFIG_440A which was a problem for multiplatform
> kernels and instead fixes up the IVOR at runtime from a setup_cpu
> function. The "A" version of the machine check also tweaks the
> regs->trap value to differenciate the 2 versions at the C level.

This breaks ARCH=ppc builds.  Unfortunately, that tree shares the
cputable.[ch] files, but has it's own traps.c.  Which means you get
lots of nice undefined references like below for example:

arch/powerpc/kernel/built-in.o:(.init.data+0x44): undefined reference to `machine_check_4xx'
arch/powerpc/kernel/built-in.o:(.init.data+0x8c): undefined reference to `machine_check_4xx'
arch/powerpc/kernel/built-in.o:(.init.data+0xd4): undefined reference to `machine_check_4xx'

Because the cputable entries for the processors are setting the .machine_check function and it's never built.

I'm not sure which would be easier, making arch/ppc use traps.c from arch/powerpc, or adding similar functionality there.

josh

Re: [PATCH 4/25] powerpc: Reworking machine check handling and Fix 440/440A

[Benjamin Herrenschmidt]

On Mon, 2007-12-10 at 11:59 -0600, Josh Boyer wrote:
> 
> This breaks ARCH=ppc builds.  Unfortunately, that tree shares the
> cputable.[ch] files, but has it's own traps.c.  Which means you get
> lots of nice undefined references like below for example:
> 
> arch/powerpc/kernel/built-in.o:(.init.data+0x44): undefined reference
> to `machine_check_4xx'
> arch/powerpc/kernel/built-in.o:(.init.data+0x8c): undefined reference
> to `machine_check_4xx'
> arch/powerpc/kernel/built-in.o:(.init.data+0xd4): undefined reference
> to `machine_check_4xx'
> 
> Because the cputable entries for the processors are setting
> the .machine_check function and it's never built.
> 
> I'm not sure which would be easier, making arch/ppc use traps.c from
> arch/powerpc, or adding similar functionality there.

Split cputable.c ? I hate arch/ppc sharing files ... Or I could port the
changes to arch/ppc. I don't want to use the same traps.c file. Sharing
file is just a pain every time we do major changes.

Ben.

Re: [PATCH 4/25] powerpc: Reworking machine check handling and Fix 440/440A

[Josh Boyer]

On Tue, 11 Dec 2007 07:33:35 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> 
> On Mon, 2007-12-10 at 11:59 -0600, Josh Boyer wrote:
> > 
> > This breaks ARCH=ppc builds.  Unfortunately, that tree shares the
> > cputable.[ch] files, but has it's own traps.c.  Which means you get
> > lots of nice undefined references like below for example:
> > 
> > arch/powerpc/kernel/built-in.o:(.init.data+0x44): undefined reference
> > to `machine_check_4xx'
> > arch/powerpc/kernel/built-in.o:(.init.data+0x8c): undefined reference
> > to `machine_check_4xx'
> > arch/powerpc/kernel/built-in.o:(.init.data+0xd4): undefined reference
> > to `machine_check_4xx'
> > 
> > Because the cputable entries for the processors are setting
> > the .machine_check function and it's never built.
> > 
> > I'm not sure which would be easier, making arch/ppc use traps.c from
> > arch/powerpc, or adding similar functionality there.
> 
> Split cputable.c ? I hate arch/ppc sharing files ... Or I could port the
> changes to arch/ppc. I don't want to use the same traps.c file. Sharing
> file is just a pain every time we do major changes.

Splitting cputable.c at this point would be rather annoying, given the
number of changes we've made to arch/ppc recently to accommodate for it
being shared.  Porting the changes to arch/ppc sounds like the most
reasonable path.

I can't wait for arch/ppc to die.

josh

[PATCH 5/25] powerpc: Add xmon function to dump 44x TLB

[Benjamin Herrenschmidt]

This adds a function to xmon to dump the content of the 44x processor
TLB with a little bit of decoding (but not much).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Did that to track down some machine checks I was having while working
on PCI support due to 32/64 bits resource screwage.
Useful to see where a given MMIO virtual address really maps to.

 arch/powerpc/xmon/xmon.c |   38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

Index: linux-work/arch/powerpc/xmon/xmon.c
===================================================================
--- linux-work.orig/arch/powerpc/xmon/xmon.c	2007-12-03 11:48:03.000000000 +1100
+++ linux-work/arch/powerpc/xmon/xmon.c	2007-12-03 12:07:14.000000000 +1100
@@ -153,6 +153,10 @@ static const char *getvecname(unsigned l
 
 static int do_spu_cmd(void);
 
+#ifdef CONFIG_44x
+static void dump_tlb_44x(void);
+#endif
+
 int xmon_no_auto_backtrace;
 
 extern void xmon_enter(void);
@@ -231,6 +235,9 @@ Commands:\n\
 #ifdef CONFIG_PPC_STD_MMU_32
 "  u	dump segment registers\n"
 #endif
+#ifdef CONFIG_44x
+"  u	dump TLB\n"
+#endif
 "  ?	help\n"
 "  zr	reboot\n\
   zh	halt\n"
@@ -856,6 +863,11 @@ cmds(struct pt_regs *excp)
 			dump_segments();
 			break;
 #endif
+#ifdef CONFIG_44x
+		case 'u':
+			dump_tlb_44x();
+			break;
+#endif
 		default:
 			printf("Unrecognized command: ");
 		        do {
@@ -2581,6 +2593,32 @@ void dump_segments(void)
 }
 #endif
 
+#ifdef CONFIG_44x
+static void dump_tlb_44x(void)
+{
+	int i;
+
+	for (i = 0; i < PPC44x_TLB_SIZE; i++) {
+		unsigned long w0, w1, w2;
+		asm volatile("tlbre  %0,%1,0" : "=r" (w0) : "r" (i));
+		asm volatile("tlbre  %0,%1,1" : "=r" (w1) : "r" (i));
+		asm volatile("tlbre  %0,%1,2" : "=r" (w2) : "r" (i));
+		printf("[%02x] %08x %08x %08x ", i, w0, w1, w2);
+		if (w0 & PPC44x_TLB_VALID) {
+			printf("V %08x -> %01x%08x %c%c%c%c%c",
+			       w0 & PPC44x_TLB_EPN_MASK,
+			       w1 & PPC44x_TLB_ERPN_MASK,
+			       w1 & PPC44x_TLB_RPN_MASK,
+			       (w2 & PPC44x_TLB_W) ? 'W' : 'w',
+			       (w2 & PPC44x_TLB_I) ? 'I' : 'i',
+			       (w2 & PPC44x_TLB_M) ? 'M' : 'm',
+			       (w2 & PPC44x_TLB_G) ? 'G' : 'g',
+			       (w2 & PPC44x_TLB_E) ? 'E' : 'e');
+		}
+		printf("\n");
+	}
+}
+#endif /* CONFIG_44x */
 void xmon_init(int enable)
 {
 #ifdef CONFIG_PPC_ISERIES

[PATCH 6/25] powerpc: Change 32 bits PCI message about resource allocation

[Benjamin Herrenschmidt]

The 32 bits PCI code will display a rather scary error message

   PCI: Cannot allocate resource region N of device XXX

at boot when the existing setup of a device as left by the
firmware doesn't match the kernel needs and the device needs
to be moved. This is often not an error at all, as the kernel
will generally easily reallocate the device elsewhere.

This changes the message to something less scary and lowers
its level from error to warning.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/kernel/pci_32.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-work/arch/powerpc/kernel/pci_32.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/pci_32.c	2007-11-20 17:04:07.000000000 +1100
+++ linux-work/arch/powerpc/kernel/pci_32.c	2007-11-21 16:53:53.000000000 +1100
@@ -508,7 +508,7 @@ static inline void alloc_resource(struct
 	    pci_name(dev), idx, (u64)r->start, (u64)r->end, r->flags);
 	pr = pci_find_parent_resource(dev, r);
 	if (!pr || request_resource(pr, r) < 0) {
-		printk(KERN_ERR "PCI: Cannot allocate resource region %d"
+		printk(KERN_WARNING "PCI: Remapping resource region %d"
 		       " of device %s\n", idx, pci_name(dev));
 		if (pr)
 			DBG("PCI:  parent is %p: %016llx-%016llx (f=%lx)\n",

[PATCH 7/25] powerpc: Add of_translate_dma_address

[Benjamin Herrenschmidt]

This adds a variant of of_translate_address that uses the dma-ranges
property instead of "ranges", it's to be used by PCI code in parsing
the dma-ranges property.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/kernel/prom_parse.c |   20 ++++++++++++++++----
 include/asm-powerpc/prom.h       |    4 ++++
 2 files changed, 20 insertions(+), 4 deletions(-)

Index: linux-work/arch/powerpc/kernel/prom_parse.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/prom_parse.c	2007-11-22 13:18:32.000000000 +1100
+++ linux-work/arch/powerpc/kernel/prom_parse.c	2007-11-22 13:50:45.000000000 +1100
@@ -419,7 +419,7 @@ static struct of_bus *of_match_bus(struc
 
 static int of_translate_one(struct device_node *parent, struct of_bus *bus,
 			    struct of_bus *pbus, u32 *addr,
-			    int na, int ns, int pna)
+			    int na, int ns, int pna, const char *rprop)
 {
 	const u32 *ranges;
 	unsigned int rlen;
@@ -438,7 +438,7 @@ static int of_translate_one(struct devic
 	 * to translate addresses that aren't supposed to be translated in
 	 * the first place. --BenH.
 	 */
-	ranges = of_get_property(parent, "ranges", &rlen);
+	ranges = of_get_property(parent, rprop, &rlen);
 	if (ranges == NULL || rlen == 0) {
 		offset = of_read_number(addr, na);
 		memset(addr, 0, pna * 4);
@@ -481,7 +481,8 @@ static int of_translate_one(struct devic
  * that can be mapped to a cpu physical address). This is not really specified
  * that way, but this is traditionally the way IBM at least do things
  */
-u64 of_translate_address(struct device_node *dev, const u32 *in_addr)
+u64 __of_translate_address(struct device_node *dev, const u32 *in_addr,
+			   const char *rprop)
 {
 	struct device_node *parent = NULL;
 	struct of_bus *bus, *pbus;
@@ -540,7 +541,7 @@ u64 of_translate_address(struct device_n
 		    pbus->name, pna, pns, parent->full_name);
 
 		/* Apply bus translation */
-		if (of_translate_one(dev, bus, pbus, addr, na, ns, pna))
+		if (of_translate_one(dev, bus, pbus, addr, na, ns, pna, rprop))
 			break;
 
 		/* Complete the move up one level */
@@ -556,8 +557,19 @@ u64 of_translate_address(struct device_n
 
 	return result;
 }
+
+u64 of_translate_address(struct device_node *dev, const u32 *in_addr)
+{
+	return __of_translate_address(dev, in_addr, "ranges");
+}
 EXPORT_SYMBOL(of_translate_address);
 
+u64 of_translate_dma_address(struct device_node *dev, const u32 *in_addr)
+{
+	return __of_translate_address(dev, in_addr, "dma-ranges");
+}
+EXPORT_SYMBOL(of_translate_dma_address);
+
 const u32 *of_get_address(struct device_node *dev, int index, u64 *size,
 		    unsigned int *flags)
 {
Index: linux-work/include/asm-powerpc/prom.h
===================================================================
--- linux-work.orig/include/asm-powerpc/prom.h	2007-11-22 13:48:21.000000000 +1100
+++ linux-work/include/asm-powerpc/prom.h	2007-11-22 13:48:57.000000000 +1100
@@ -202,6 +202,10 @@ static inline unsigned long of_read_ulon
  */
 extern u64 of_translate_address(struct device_node *np, const u32 *addr);
 
+/* Translate a DMA address from device space to CPU space */
+extern u64 of_translate_dma_address(struct device_node *dev,
+				    const u32 *in_addr);
+
 /* Extract an address from a device, returns the region size and
  * the address space flags too. The PCI version uses a BAR number
  * instead of an absolute index

[PATCH 8/25] powerpc: Improve support for 4xx indirect DCRs

[Benjamin Herrenschmidt]

Accessing indirect DCRs is done via a pair of address/data DCRs.

Such accesses are thus inherently racy, vs. interrupts, preemption
and possibly SMP if 4xx SMP cores are ever used.

This updates the mfdcri/mtdcri macros in dcr-native.h (which were
so far unused) to use a spinlock.

In addition, add some common definitions to a new dcr-regs.h file.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---


 arch/powerpc/sysdev/dcr.c        |    1 
 include/asm-powerpc/dcr-native.h |   30 +++++++++++-----
 include/asm-powerpc/dcr-regs.h   |   72 +++++++++++++++++++++++++++++++++++++++
 include/asm-powerpc/dcr.h        |    1 
 4 files changed, 96 insertions(+), 8 deletions(-)

Index: linux-work/arch/powerpc/sysdev/dcr.c
===================================================================
--- linux-work.orig/arch/powerpc/sysdev/dcr.c	2007-11-28 13:34:45.000000000 +1100
+++ linux-work/arch/powerpc/sysdev/dcr.c	2007-11-28 13:34:48.000000000 +1100
@@ -139,3 +139,4 @@ void dcr_unmap(dcr_host_t host, unsigned
 EXPORT_SYMBOL_GPL(dcr_unmap);
 
 #endif /* !defined(CONFIG_PPC_DCR_NATIVE) */
+
Index: linux-work/include/asm-powerpc/dcr-native.h
===================================================================
--- linux-work.orig/include/asm-powerpc/dcr-native.h	2007-11-28 13:33:51.000000000 +1100
+++ linux-work/include/asm-powerpc/dcr-native.h	2007-11-28 15:22:22.000000000 +1100
@@ -22,6 +22,8 @@
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
 
+#include <linux/spinlock.h>
+
 typedef struct {
 	unsigned int base;
 } dcr_host_t;
@@ -55,18 +57,30 @@ do {								\
 } while (0)
 
 /* R/W of indirect DCRs make use of standard naming conventions for DCRs */
-#define mfdcri(base, reg)			\
-({						\
-	mtdcr(base ## _CFGADDR, base ## _ ## reg);	\
-	mfdcr(base ## _CFGDATA);			\
+extern spinlock_t dcr_ind_lock;
+
+#define mfdcri(base, reg)				\
+({							\
+	unsigned long flags; 				\
+	unsigned int val;				\
+	spin_lock_irqsave(&dcr_ind_lock, flags);	\
+	mtdcr(DCRN_ ## base ## _CONFIG_ADDR, reg);	\
+	val = mfdcr(DCRN_ ## base ## _CONFIG_DATA);	\
+	spin_unlock_irqrestore(&dcr_ind_lock, flags);	\
+	val;						\
 })
 
-#define mtdcri(base, reg, data)			\
-do {						\
-	mtdcr(base ## _CFGADDR, base ## _ ## reg);	\
-	mtdcr(base ## _CFGDATA, data);		\
+#define mtdcri(base, reg, data)				\
+do {							\
+	unsigned long flags; 				\
+	spin_lock_irqsave(&dcr_ind_lock, flags);	\
+	mtdcr(DCRN_ ## base ## _CONFIG_ADDR, reg);	\
+	mtdcr(DCRN_ ## base ## _CONFIG_DATA, data);	\
+	spin_unlock_irqrestore(&dcr_ind_lock, flags);	\
 } while (0)
 
+
+
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_DCR_NATIVE_H */
Index: linux-work/include/asm-powerpc/dcr.h
===================================================================
--- linux-work.orig/include/asm-powerpc/dcr.h	2007-11-28 13:40:13.000000000 +1100
+++ linux-work/include/asm-powerpc/dcr.h	2007-11-28 13:49:37.000000000 +1100
@@ -40,6 +40,7 @@ extern unsigned int dcr_resource_len(str
 				     unsigned int index);
 #endif /* CONFIG_PPC_MERGE */
 
+
 #endif /* CONFIG_PPC_DCR */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_DCR_H */
Index: linux-work/include/asm-powerpc/dcr-regs.h
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/include/asm-powerpc/dcr-regs.h	2007-11-28 14:43:25.000000000 +1100
@@ -0,0 +1,72 @@
+/*
+ * Common DCR / SDR / CPR register definitions used on various IBM/AMCC
+ * 4xx processors
+ *
+ *    Copyright 2007 Benjamin Herrenschmidt, IBM Corp
+ *                   <benh@kernel.crashing.org>
+ *
+ * Mostly lifted from asm-ppc/ibm4xx.h by
+ *
+ *    Copyright (c) 1999 Grant Erickson <grant@lcse.umn.edu>
+ *
+ */
+
+#ifndef __DCR_REGS_H__
+#define __DCR_REGS_H__
+
+/*
+ * Most DCRs used for controlling devices such as the MAL, DMA engine,
+ * etc... are obtained for the device tree.
+ *
+ * The definitions in this files are fixed DCRs and indirect DCRs that
+ * are commonly used outside of specific drivers or refer to core
+ * common registers that may occasionally have to be tweaked outside
+ * of the driver main register set
+ */
+
+/* CPRs (440GX and 440SP/440SPe) */
+#define DCRN_CPR0_CONFIG_ADDR	0xc
+#define DCRN_CPR0_CONFIG_DATA	0xd
+
+/* SDRs (440GX and 440SP/440SPe) */
+#define DCRN_SDR0_CONFIG_ADDR 	0xe
+#define DCRN_SDR0_CONFIG_DATA	0xf
+
+#define SDR0_PFC0		0x4100
+#define SDR0_PFC1		0x4101
+#define SDR0_PFC1_EPS		0x1c00000
+#define SDR0_PFC1_EPS_SHIFT	22
+#define SDR0_PFC1_RMII		0x02000000
+#define SDR0_MFR		0x4300
+#define SDR0_MFR_TAH0 		0x80000000  	/* TAHOE0 Enable */
+#define SDR0_MFR_TAH1 		0x40000000  	/* TAHOE1 Enable */
+#define SDR0_MFR_PCM  		0x10000000  	/* PPC440GP irq compat mode */
+#define SDR0_MFR_ECS  		0x08000000  	/* EMAC int clk */
+#define SDR0_MFR_T0TXFL		0x00080000
+#define SDR0_MFR_T0TXFH		0x00040000
+#define SDR0_MFR_T1TXFL		0x00020000
+#define SDR0_MFR_T1TXFH		0x00010000
+#define SDR0_MFR_E0TXFL		0x00008000
+#define SDR0_MFR_E0TXFH		0x00004000
+#define SDR0_MFR_E0RXFL		0x00002000
+#define SDR0_MFR_E0RXFH		0x00001000
+#define SDR0_MFR_E1TXFL		0x00000800
+#define SDR0_MFR_E1TXFH		0x00000400
+#define SDR0_MFR_E1RXFL		0x00000200
+#define SDR0_MFR_E1RXFH		0x00000100
+#define SDR0_MFR_E2TXFL		0x00000080
+#define SDR0_MFR_E2TXFH		0x00000040
+#define SDR0_MFR_E2RXFL		0x00000020
+#define SDR0_MFR_E2RXFH		0x00000010
+#define SDR0_MFR_E3TXFL		0x00000008
+#define SDR0_MFR_E3TXFH		0x00000004
+#define SDR0_MFR_E3RXFL		0x00000002
+#define SDR0_MFR_E3RXFH		0x00000001
+#define SDR0_UART0		0x0120
+#define SDR0_UART1		0x0121
+#define SDR0_UART2		0x0122
+#define SDR0_UART3		0x0123
+#define SDR0_CUST0		0x4000
+
+
+#endif /* __DCR_REGS_H__ */

Re: [PATCH 8/25] powerpc: Improve support for 4xx indirect DCRs

[Josh Boyer]

On Thu, 06 Dec 2007 19:00:06 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> Accessing indirect DCRs is done via a pair of address/data DCRs.
> 
> Such accesses are thus inherently racy, vs. interrupts, preemption
> and possibly SMP if 4xx SMP cores are ever used.
> 
> This updates the mfdcri/mtdcri macros in dcr-native.h (which were
> so far unused) to use a spinlock.
> 
> In addition, add some common definitions to a new dcr-regs.h file.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
> 
> 
>  arch/powerpc/sysdev/dcr.c        |    1 
>  include/asm-powerpc/dcr-native.h |   30 +++++++++++-----
>  include/asm-powerpc/dcr-regs.h   |   72 +++++++++++++++++++++++++++++++++++++++
>  include/asm-powerpc/dcr.h        |    1 
>  4 files changed, 96 insertions(+), 8 deletions(-)
> 
> Index: linux-work/arch/powerpc/sysdev/dcr.c
> ===================================================================
> --- linux-work.orig/arch/powerpc/sysdev/dcr.c	2007-11-28 13:34:45.000000000 +1100
> +++ linux-work/arch/powerpc/sysdev/dcr.c	2007-11-28 13:34:48.000000000 +1100
> @@ -139,3 +139,4 @@ void dcr_unmap(dcr_host_t host, unsigned
>  EXPORT_SYMBOL_GPL(dcr_unmap);
> 
>  #endif /* !defined(CONFIG_PPC_DCR_NATIVE) */
> +

Somehow I doubt this single extraneous whitespace addition is really
needed.


> Index: linux-work/include/asm-powerpc/dcr-native.h
> ===================================================================
> --- linux-work.orig/include/asm-powerpc/dcr-native.h	2007-11-28 13:33:51.000000000 +1100
> +++ linux-work/include/asm-powerpc/dcr-native.h	2007-11-28 15:22:22.000000000 +1100
> @@ -22,6 +22,8 @@
>  #ifdef __KERNEL__
>  #ifndef __ASSEMBLY__
> 
> +#include <linux/spinlock.h>
> +
>  typedef struct {
>  	unsigned int base;
>  } dcr_host_t;
> @@ -55,18 +57,30 @@ do {								\
>  } while (0)
> 
>  /* R/W of indirect DCRs make use of standard naming conventions for DCRs */
> -#define mfdcri(base, reg)			\
> -({						\
> -	mtdcr(base ## _CFGADDR, base ## _ ## reg);	\
> -	mfdcr(base ## _CFGDATA);			\
> +extern spinlock_t dcr_ind_lock;
> +
> +#define mfdcri(base, reg)				\
> +({							\
> +	unsigned long flags; 				\
> +	unsigned int val;				\
> +	spin_lock_irqsave(&dcr_ind_lock, flags);	\
> +	mtdcr(DCRN_ ## base ## _CONFIG_ADDR, reg);	\
> +	val = mfdcr(DCRN_ ## base ## _CONFIG_DATA);	\
> +	spin_unlock_irqrestore(&dcr_ind_lock, flags);	\
> +	val;						\
>  })
> 
> -#define mtdcri(base, reg, data)			\
> -do {						\
> -	mtdcr(base ## _CFGADDR, base ## _ ## reg);	\
> -	mtdcr(base ## _CFGDATA, data);		\
> +#define mtdcri(base, reg, data)				\
> +do {							\
> +	unsigned long flags; 				\
> +	spin_lock_irqsave(&dcr_ind_lock, flags);	\
> +	mtdcr(DCRN_ ## base ## _CONFIG_ADDR, reg);	\
> +	mtdcr(DCRN_ ## base ## _CONFIG_DATA, data);	\
> +	spin_unlock_irqrestore(&dcr_ind_lock, flags);	\
>  } while (0)
> 
> +
> +

More bogus whitespace.


>  #endif /* __ASSEMBLY__ */
>  #endif /* __KERNEL__ */
>  #endif /* _ASM_POWERPC_DCR_NATIVE_H */
> Index: linux-work/include/asm-powerpc/dcr.h
> ===================================================================
> --- linux-work.orig/include/asm-powerpc/dcr.h	2007-11-28 13:40:13.000000000 +1100
> +++ linux-work/include/asm-powerpc/dcr.h	2007-11-28 13:49:37.000000000 +1100
> @@ -40,6 +40,7 @@ extern unsigned int dcr_resource_len(str
>  				     unsigned int index);
>  #endif /* CONFIG_PPC_MERGE */
> 
> +

You really like whitespace.  Again I don't see anything needed for this
file :)

>  #endif /* CONFIG_PPC_DCR */
>  #endif /* __KERNEL__ */
>  #endif /* _ASM_POWERPC_DCR_H */
> Index: linux-work/include/asm-powerpc/dcr-regs.h
> ===================================================================
> --- /dev/null	1970-01-01 00:00:00.000000000 +0000
> +++ linux-work/include/asm-powerpc/dcr-regs.h	2007-11-28 14:43:25.000000000 +1100
> @@ -0,0 +1,72 @@
> +/*
> + * Common DCR / SDR / CPR register definitions used on various IBM/AMCC
> + * 4xx processors
> + *
> + *    Copyright 2007 Benjamin Herrenschmidt, IBM Corp
> + *                   <benh@kernel.crashing.org>
> + *
> + * Mostly lifted from asm-ppc/ibm4xx.h by
> + *
> + *    Copyright (c) 1999 Grant Erickson <grant@lcse.umn.edu>
> + *
> + */
> +
> +#ifndef __DCR_REGS_H__
> +#define __DCR_REGS_H__
> +
> +/*
> + * Most DCRs used for controlling devices such as the MAL, DMA engine,
> + * etc... are obtained for the device tree.
> + *
> + * The definitions in this files are fixed DCRs and indirect DCRs that
> + * are commonly used outside of specific drivers or refer to core
> + * common registers that may occasionally have to be tweaked outside
> + * of the driver main register set
> + */
> +
> +/* CPRs (440GX and 440SP/440SPe) */
> +#define DCRN_CPR0_CONFIG_ADDR	0xc
> +#define DCRN_CPR0_CONFIG_DATA	0xd
> +
> +/* SDRs (440GX and 440SP/440SPe) */
> +#define DCRN_SDR0_CONFIG_ADDR 	0xe
> +#define DCRN_SDR0_CONFIG_DATA	0xf
> +
> +#define SDR0_PFC0		0x4100
> +#define SDR0_PFC1		0x4101
> +#define SDR0_PFC1_EPS		0x1c00000
> +#define SDR0_PFC1_EPS_SHIFT	22
> +#define SDR0_PFC1_RMII		0x02000000
> +#define SDR0_MFR		0x4300
> +#define SDR0_MFR_TAH0 		0x80000000  	/* TAHOE0 Enable */
> +#define SDR0_MFR_TAH1 		0x40000000  	/* TAHOE1 Enable */
> +#define SDR0_MFR_PCM  		0x10000000  	/* PPC440GP irq compat mode */
> +#define SDR0_MFR_ECS  		0x08000000  	/* EMAC int clk */
> +#define SDR0_MFR_T0TXFL		0x00080000
> +#define SDR0_MFR_T0TXFH		0x00040000
> +#define SDR0_MFR_T1TXFL		0x00020000
> +#define SDR0_MFR_T1TXFH		0x00010000
> +#define SDR0_MFR_E0TXFL		0x00008000
> +#define SDR0_MFR_E0TXFH		0x00004000
> +#define SDR0_MFR_E0RXFL		0x00002000
> +#define SDR0_MFR_E0RXFH		0x00001000
> +#define SDR0_MFR_E1TXFL		0x00000800
> +#define SDR0_MFR_E1TXFH		0x00000400
> +#define SDR0_MFR_E1RXFL		0x00000200
> +#define SDR0_MFR_E1RXFH		0x00000100
> +#define SDR0_MFR_E2TXFL		0x00000080
> +#define SDR0_MFR_E2TXFH		0x00000040
> +#define SDR0_MFR_E2RXFL		0x00000020
> +#define SDR0_MFR_E2RXFH		0x00000010
> +#define SDR0_MFR_E3TXFL		0x00000008
> +#define SDR0_MFR_E3TXFH		0x00000004
> +#define SDR0_MFR_E3RXFL		0x00000002
> +#define SDR0_MFR_E3RXFH		0x00000001
> +#define SDR0_UART0		0x0120
> +#define SDR0_UART1		0x0121
> +#define SDR0_UART2		0x0122
> +#define SDR0_UART3		0x0123
> +#define SDR0_CUST0		0x4000
> +
> +
> +#endif /* __DCR_REGS_H__ */

Re: [PATCH 8/25] powerpc: Improve support for 4xx indirect DCRs

[Benjamin Herrenschmidt]

powerpc: Improve support for 4xx indirect DCRs

Accessing indirect DCRs is done via a pair of address/data DCRs.

Such accesses are thus inherently racy, vs. interrupts, preemption
and possibly SMP if 4xx SMP cores are ever used.

This updates the mfdcri/mtdcri macros in dcr-native.h (which were
so far unused) to use a spinlock.

In addition, add some common definitions to a new dcr-regs.h file.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Index: linux-work/include/asm-powerpc/dcr-native.h
===================================================================
--- linux-work.orig/include/asm-powerpc/dcr-native.h	2007-12-10 15:52:26.000000000 +1100
+++ linux-work/include/asm-powerpc/dcr-native.h	2007-12-10 15:53:36.000000000 +1100
@@ -22,6 +22,8 @@
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
 
+#include <linux/spinlock.h>
+
 typedef struct {
 	unsigned int base;
 } dcr_host_t;
@@ -55,20 +57,28 @@ do {								\
 } while (0)
 
 /* R/W of indirect DCRs make use of standard naming conventions for DCRs */
-#define mfdcri(base, reg)			\
-({						\
-	mtdcr(base ## _CFGADDR, base ## _ ## reg);	\
-	mfdcr(base ## _CFGDATA);			\
+extern spinlock_t dcr_ind_lock;
+
+#define mfdcri(base, reg)				\
+({							\
+	unsigned long flags; 				\
+	unsigned int val;				\
+	spin_lock_irqsave(&dcr_ind_lock, flags);	\
+	mtdcr(DCRN_ ## base ## _CONFIG_ADDR, reg);	\
+	val = mfdcr(DCRN_ ## base ## _CONFIG_DATA);	\
+	spin_unlock_irqrestore(&dcr_ind_lock, flags);	\
+	val;						\
 })
 
-#define mtdcri(base, reg, data)			\
-do {						\
-	mtdcr(base ## _CFGADDR, base ## _ ## reg);	\
-	mtdcr(base ## _CFGDATA, data);		\
+#define mtdcri(base, reg, data)				\
+do {							\
+	unsigned long flags; 				\
+	spin_lock_irqsave(&dcr_ind_lock, flags);	\
+	mtdcr(DCRN_ ## base ## _CONFIG_ADDR, reg);	\
+	mtdcr(DCRN_ ## base ## _CONFIG_DATA, data);	\
+	spin_unlock_irqrestore(&dcr_ind_lock, flags);	\
 } while (0)
 
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_DCR_NATIVE_H */
-
-
Index: linux-work/include/asm-powerpc/dcr-regs.h
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/include/asm-powerpc/dcr-regs.h	2007-12-10 15:53:33.000000000 +1100
@@ -0,0 +1,71 @@
+/*
+ * Common DCR / SDR / CPR register definitions used on various IBM/AMCC
+ * 4xx processors
+ *
+ *    Copyright 2007 Benjamin Herrenschmidt, IBM Corp
+ *                   <benh@kernel.crashing.org>
+ *
+ * Mostly lifted from asm-ppc/ibm4xx.h by
+ *
+ *    Copyright (c) 1999 Grant Erickson <grant@lcse.umn.edu>
+ *
+ */
+
+#ifndef __DCR_REGS_H__
+#define __DCR_REGS_H__
+
+/*
+ * Most DCRs used for controlling devices such as the MAL, DMA engine,
+ * etc... are obtained for the device tree.
+ *
+ * The definitions in this files are fixed DCRs and indirect DCRs that
+ * are commonly used outside of specific drivers or refer to core
+ * common registers that may occasionally have to be tweaked outside
+ * of the driver main register set
+ */
+
+/* CPRs (440GX and 440SP/440SPe) */
+#define DCRN_CPR0_CONFIG_ADDR	0xc
+#define DCRN_CPR0_CONFIG_DATA	0xd
+
+/* SDRs (440GX and 440SP/440SPe) */
+#define DCRN_SDR0_CONFIG_ADDR 	0xe
+#define DCRN_SDR0_CONFIG_DATA	0xf
+
+#define SDR0_PFC0		0x4100
+#define SDR0_PFC1		0x4101
+#define SDR0_PFC1_EPS		0x1c00000
+#define SDR0_PFC1_EPS_SHIFT	22
+#define SDR0_PFC1_RMII		0x02000000
+#define SDR0_MFR		0x4300
+#define SDR0_MFR_TAH0 		0x80000000  	/* TAHOE0 Enable */
+#define SDR0_MFR_TAH1 		0x40000000  	/* TAHOE1 Enable */
+#define SDR0_MFR_PCM  		0x10000000  	/* PPC440GP irq compat mode */
+#define SDR0_MFR_ECS  		0x08000000  	/* EMAC int clk */
+#define SDR0_MFR_T0TXFL		0x00080000
+#define SDR0_MFR_T0TXFH		0x00040000
+#define SDR0_MFR_T1TXFL		0x00020000
+#define SDR0_MFR_T1TXFH		0x00010000
+#define SDR0_MFR_E0TXFL		0x00008000
+#define SDR0_MFR_E0TXFH		0x00004000
+#define SDR0_MFR_E0RXFL		0x00002000
+#define SDR0_MFR_E0RXFH		0x00001000
+#define SDR0_MFR_E1TXFL		0x00000800
+#define SDR0_MFR_E1TXFH		0x00000400
+#define SDR0_MFR_E1RXFL		0x00000200
+#define SDR0_MFR_E1RXFH		0x00000100
+#define SDR0_MFR_E2TXFL		0x00000080
+#define SDR0_MFR_E2TXFH		0x00000040
+#define SDR0_MFR_E2RXFL		0x00000020
+#define SDR0_MFR_E2RXFH		0x00000010
+#define SDR0_MFR_E3TXFL		0x00000008
+#define SDR0_MFR_E3TXFH		0x00000004
+#define SDR0_MFR_E3RXFL		0x00000002
+#define SDR0_MFR_E3RXFH		0x00000001
+#define SDR0_UART0		0x0120
+#define SDR0_UART1		0x0121
+#define SDR0_UART2		0x0122
+#define SDR0_UART3		0x0123
+#define SDR0_CUST0		0x4000
+
+#endif /* __DCR_REGS_H__ */

[PATCH 9/25] powerpc: 4xx PLB to PCI-X support

[Benjamin Herrenschmidt]

This adds base support code for the 4xx PCI-X bridge. It also provides
placeholders for the PCI and PCI-E version but they aren't supported
with this patch.

The bridges are configured based on device-tree properties.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Tested on 440GP only so far.

 arch/powerpc/sysdev/Makefile     |    3 
 arch/powerpc/sysdev/ppc4xx_pci.c |  340 +++++++++++++++++++++++++++++++++++++++
 arch/powerpc/sysdev/ppc4xx_pci.h |  106 ++++++++++++
 3 files changed, 449 insertions(+)

Index: linux-work/arch/powerpc/sysdev/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/sysdev/Makefile	2007-12-03 11:48:02.000000000 +1100
+++ linux-work/arch/powerpc/sysdev/Makefile	2007-12-03 12:09:20.000000000 +1100
@@ -27,6 +27,9 @@ obj-$(CONFIG_PPC_I8259)		+= i8259.o
 obj-$(CONFIG_PPC_83xx)		+= ipic.o
 obj-$(CONFIG_4xx)		+= uic.o
 obj-$(CONFIG_XILINX_VIRTEX)	+= xilinx_intc.o
+ifeq ($(CONFIG_PCI),y)
+obj-$(CONFIG_4xx)		+= ppc4xx_pci.o
+endif
 endif
 
 # Temporary hack until we have migrated to asm-powerpc
Index: linux-work/arch/powerpc/sysdev/ppc4xx_pci.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/sysdev/ppc4xx_pci.c	2007-12-03 12:09:54.000000000 +1100
@@ -0,0 +1,340 @@
+/*
+ * PCI / PCI-X / PCI-Express support for 4xx parts
+ *
+ * Copyright 2007 Ben. Herrenschmidt <benh@kernel.crashing.org>, IBM Corp.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/of.h>
+
+#include <asm/io.h>
+#include <asm/pci-bridge.h>
+#include <asm/machdep.h>
+
+#include "ppc4xx_pci.h"
+
+static int dma_offset_set;
+
+/* Move that to a useable header */
+extern unsigned long total_memory;
+
+static int __init ppc4xx_parse_dma_ranges(struct pci_controller *hose,
+					  void __iomem *reg,
+					  struct resource *res)
+{
+	struct device_node *node = hose->arch_data;
+	u64 size;
+	const u32 *ranges;
+	int rlen;
+	int pna = of_n_addr_cells(node);
+	int np = pna + 5;
+
+	/* Default */
+	res->start = 0;
+	res->end = size = 0x80000000;
+	res->flags = IORESOURCE_MEM | IORESOURCE_PREFETCH;
+
+	/* Get dma-ranges property */
+	ranges = of_get_property(node, "dma-ranges", &rlen);
+	if (ranges == NULL)
+		goto out;
+
+	/* Walk it */
+	while ((rlen -= np * 4) >= 0) {
+		u32 pci_space = ranges[0];
+		u64 pci_addr = of_read_number(ranges + 1, 2);
+		u64 cpu_addr = of_translate_dma_address(node, ranges + 3);
+		size = of_read_number(ranges + pna + 3, 2);
+		ranges += np;
+		if (cpu_addr == OF_BAD_ADDR || size == 0)
+			continue;
+
+		/* We only care about memory */
+		if ((pci_space & 0x03000000) != 0x02000000)
+			continue;
+
+		/* We currently only support memory at 0, and pci_addr
+		 * within 32 bits space
+		 */
+		if (cpu_addr != 0 || pci_addr > 0xffffffff) {
+			printk(KERN_WARNING "%s: Ignored unsupported dma range"
+			       " 0x%016llx...0x%016llx -> 0x%016llx\n",
+			       node->full_name,
+			       pci_addr, pci_addr + size - 1, cpu_addr);
+			continue;
+		}
+
+		/* Check if not prefetchable */
+		if (!(pci_space & 0x40000000))
+			res->flags &= ~IORESOURCE_PREFETCH;
+
+
+		/* Use that */
+		res->start = pci_addr;
+#ifndef CONFIG_RESOURCES_64BIT
+		/* Beware of 32 bits resources */
+		if ((pci_addr + size) > 0x100000000ull)
+			res->end = 0xffffffff;
+		else
+#endif
+			res->end = res->start + size - 1;
+		break;
+	}
+
+	/* We only support one global DMA offset */
+	if (dma_offset_set && pci_dram_offset != res->start) {
+		printk(KERN_ERR "%s: dma-ranges(s) mismatch\n",
+		       node->full_name);
+		return -ENXIO;
+	}
+
+	/* Check that we can fit all of memory as we don't support
+	 * DMA bounce buffers
+	 */
+	if (size < total_memory) {
+		printk(KERN_ERR "%s: dma-ranges too small\n",
+		       node->full_name);
+		return -ENXIO;
+	}
+
+	/* Check we are a power of 2 size and that base is a multiple of size*/
+	if (!is_power_of_2(size) ||
+	    (res->start & (size - 1)) != 0) {
+		printk(KERN_ERR "%s: dma-ranges unaligned\n",
+		       node->full_name);
+		return -ENXIO;
+	}
+
+	/* Check that we are fully contained within 32 bits space */
+	if (res->end > 0xffffffff) {
+		printk(KERN_ERR "%s: dma-ranges outside of 32 bits space\n",
+		       node->full_name);
+		return -ENXIO;
+	}
+ out:
+	dma_offset_set = 1;
+	pci_dram_offset = res->start;
+
+	printk(KERN_INFO "4xx PCI DMA offset set to 0x%08lx\n",
+	       pci_dram_offset);
+	return 0;
+}
+
+/*
+ * 4xx PCI 2.x part
+ */
+static void __init ppc4xx_probe_pci_bridge(struct device_node *np)
+{
+	/* NYI */
+}
+
+/*
+ * 4xx PCI-X part
+ */
+
+static void __init ppc4xx_configure_pcix_POMs(struct pci_controller *hose,
+					      void __iomem *reg)
+{
+	struct device_node *np = hose->arch_data;
+	u32 lah, lal, pciah, pcial, sa;
+	int i, j;
+
+	/* Setup outbound memory windows */
+	for (i = j = 0; i < 3; i++) {
+		struct resource *res = &hose->mem_resources[i];
+
+		/* we only care about memory windows */
+		if (!(res->flags & IORESOURCE_MEM))
+			continue;
+		if (j > 1) {
+			printk(KERN_WARNING "%s: Too many ranges\n",
+			       np->full_name);
+			break;
+		}
+
+		/* Calculate register values */
+#ifdef CONFIG_PTE_64BIT
+		lah = res->start >> 32;
+		lal = res->start & 0xffffffffu;
+		pciah = (res->start - hose->pci_mem_offset) >> 32;
+		pcial = (res->start - hose->pci_mem_offset) & 0xffffffffu;
+#else
+		lah = pciah = 0;
+		lal = res->start;
+		pcial = res->start - hose->pci_mem_offset;
+#endif
+		sa = res->end + 1 - res->start;
+		if (!is_power_of_2(sa) || sa < 0x100000 ||
+		    sa > 0xffffffffu) {
+			printk(KERN_WARNING "%s: Resource out of range\n",
+			       np->full_name);
+			continue;
+		}
+		sa = (0xffffffffu << ilog2(sa)) | 0x1;
+
+		/* Program register values */
+		if (j == 0) {
+			writel(lah, reg + PCIX0_POM0LAH);
+			writel(lal, reg + PCIX0_POM0LAL);
+			writel(pciah, reg + PCIX0_POM0PCIAH);
+			writel(pcial, reg + PCIX0_POM0PCIAL);
+			writel(sa, reg + PCIX0_POM0SA);
+		} else {
+			writel(lah, reg + PCIX0_POM1LAH);
+			writel(lal, reg + PCIX0_POM1LAL);
+			writel(pciah, reg + PCIX0_POM1PCIAH);
+			writel(pcial, reg + PCIX0_POM1PCIAL);
+			writel(sa, reg + PCIX0_POM1SA);
+		}
+		j++;
+	}
+}
+
+static void __init ppc4xx_configure_pcix_PIMs(struct pci_controller *hose,
+					      void __iomem *reg,
+					      const struct resource *res,
+					      int big_pim,
+					      int enable_msi_hole)
+{
+	resource_size_t size = res->end - res->start + 1;
+	u32 sa;
+
+	/* RAM is always at 0 */
+	writel(0x00000000, reg + PCIX0_PIM0LAH);
+	writel(0x00000000, reg + PCIX0_PIM0LAL);
+
+	/* Calculate window size */
+	sa = (0xffffffffu << ilog2(size)) | 1;
+	sa |= 0x1;
+	if (res->flags & IORESOURCE_PREFETCH)
+		sa |= 0x2;
+	if (enable_msi_hole)
+		sa |= 0x4;
+	writel(sa, reg + PCIX0_PIM0SA);
+	if (big_pim)
+		writel(0xffffffff, reg + PCIX0_PIM0SAH);
+
+	/* Map on PCI side */
+	writel(0x00000000, reg + PCIX0_BAR0H);
+	writel(res->start, reg + PCIX0_BAR0L);
+	writew(0x0006, reg + PCIX0_COMMAND);
+}
+
+static void __init ppc4xx_probe_pcix_bridge(struct device_node *np)
+{
+	struct resource rsrc_cfg;
+	struct resource rsrc_reg;
+	struct resource dma_window;
+	struct pci_controller *hose = NULL;
+	void __iomem *reg = NULL;
+	const int *bus_range;
+	int big_pim = 0, msi = 0, primary = 0;
+
+	/* Fetch config space registers address */
+	if (of_address_to_resource(np, 0, &rsrc_cfg)) {
+		printk(KERN_ERR "%s:Can't get PCI-X config register base !",
+		       np->full_name);
+		return;
+	}
+	/* Fetch host bridge internal registers address */
+	if (of_address_to_resource(np, 3, &rsrc_reg)) {
+		printk(KERN_ERR "%s: Can't get PCI-X internal register base !",
+		       np->full_name);
+		return;
+	}
+
+	/* Check if it supports large PIMs (440GX) */
+	if (of_get_property(np, "large-inbound-windows", NULL))
+		big_pim = 1;
+
+	/* Check if we should enable MSIs inbound hole */
+	if (of_get_property(np, "enable-msi-hole", NULL))
+		msi = 1;
+
+	/* Check if primary bridge */
+	if (of_get_property(np, "primary", NULL))
+		primary = 1;
+
+	/* Get bus range if any */
+	bus_range = of_get_property(np, "bus-range", NULL);
+
+	/* Map registers */
+	reg = ioremap(rsrc_reg.start, rsrc_reg.end + 1 - rsrc_reg.start);
+	if (reg == NULL) {
+		printk(KERN_ERR "%s: Can't map registers !", np->full_name);
+		goto fail;
+	}
+
+	/* Allocate the host controller data structure */
+	hose = pcibios_alloc_controller(np);
+	if (!hose)
+		goto fail;
+
+	hose->first_busno = bus_range ? bus_range[0] : 0x0;
+	hose->last_busno = bus_range ? bus_range[1] : 0xff;
+
+	/* Setup config space */
+	setup_indirect_pci(hose, rsrc_cfg.start, rsrc_cfg.start + 0x4, 0);
+
+	/* Disable all windows */
+	writel(0, reg + PCIX0_POM0SA);
+	writel(0, reg + PCIX0_POM1SA);
+	writel(0, reg + PCIX0_POM2SA);
+	writel(0, reg + PCIX0_PIM0SA);
+	writel(0, reg + PCIX0_PIM1SA);
+	writel(0, reg + PCIX0_PIM2SA);
+	if (big_pim) {
+		writel(0, reg + PCIX0_PIM0SAH);
+		writel(0, reg + PCIX0_PIM2SAH);
+	}
+
+	/* Parse outbound mapping resources */
+	pci_process_bridge_OF_ranges(hose, np, primary);
+
+	/* Parse inbound mapping resources */
+	if (ppc4xx_parse_dma_ranges(hose, reg, &dma_window) != 0)
+		goto fail;
+
+	/* Configure outbound ranges POMs */
+	ppc4xx_configure_pcix_POMs(hose, reg);
+
+	/* Configure inbound ranges PIMs */
+	ppc4xx_configure_pcix_PIMs(hose, reg, &dma_window, big_pim, msi);
+
+	/* We don't need the registers anymore */
+	iounmap(reg);
+	return;
+
+ fail:
+	if (hose)
+		pcibios_free_controller(hose);
+	if (reg)
+		iounmap(reg);
+}
+
+/*
+ * 4xx PCI-Express part
+ */
+static void __init ppc4xx_probe_pciex_bridge(struct device_node *np)
+{
+	/* NYI */
+}
+
+static int __init ppc4xx_pci_find_bridges(void)
+{
+	struct device_node *np;
+
+	for_each_compatible_node(np, NULL, "ibm,plb-pciex")
+		ppc4xx_probe_pciex_bridge(np);
+	for_each_compatible_node(np, NULL, "ibm,plb-pcix")
+		ppc4xx_probe_pcix_bridge(np);
+	for_each_compatible_node(np, NULL, "ibm,plb-pci")
+		ppc4xx_probe_pci_bridge(np);
+
+	return 0;
+}
+arch_initcall(ppc4xx_pci_find_bridges);
+
Index: linux-work/arch/powerpc/sysdev/ppc4xx_pci.h
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/sysdev/ppc4xx_pci.h	2007-12-03 12:09:20.000000000 +1100
@@ -0,0 +1,106 @@
+/*
+ * PCI / PCI-X / PCI-Express support for 4xx parts
+ *
+ * Copyright 2007 Ben. Herrenschmidt <benh@kernel.crashing.org>, IBM Corp.
+ *
+ * Bits and pieces extracted from arch/ppc support by
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * Copyright 2002-2005 MontaVista Software Inc.
+ */
+#ifndef __PPC4XX_PCI_H__
+#define __PPC4XX_PCI_H__
+
+/*
+ * 4xx PCI-X bridge register definitions
+ */
+#define PCIX0_VENDID		0x000
+#define PCIX0_DEVID		0x002
+#define PCIX0_COMMAND		0x004
+#define PCIX0_STATUS		0x006
+#define PCIX0_REVID		0x008
+#define PCIX0_CLS		0x009
+#define PCIX0_CACHELS		0x00c
+#define PCIX0_LATTIM		0x00d
+#define PCIX0_HDTYPE		0x00e
+#define PCIX0_BIST		0x00f
+#define PCIX0_BAR0L		0x010
+#define PCIX0_BAR0H		0x014
+#define PCIX0_BAR1		0x018
+#define PCIX0_BAR2L		0x01c
+#define PCIX0_BAR2H		0x020
+#define PCIX0_BAR3		0x024
+#define PCIX0_CISPTR		0x028
+#define PCIX0_SBSYSVID		0x02c
+#define PCIX0_SBSYSID		0x02e
+#define PCIX0_EROMBA		0x030
+#define PCIX0_CAP		0x034
+#define PCIX0_RES0		0x035
+#define PCIX0_RES1		0x036
+#define PCIX0_RES2		0x038
+#define PCIX0_INTLN		0x03c
+#define PCIX0_INTPN		0x03d
+#define PCIX0_MINGNT		0x03e
+#define PCIX0_MAXLTNCY		0x03f
+#define PCIX0_BRDGOPT1		0x040
+#define PCIX0_BRDGOPT2		0x044
+#define PCIX0_ERREN		0x050
+#define PCIX0_ERRSTS		0x054
+#define PCIX0_PLBBESR		0x058
+#define PCIX0_PLBBEARL		0x05c
+#define PCIX0_PLBBEARH		0x060
+#define PCIX0_POM0LAL		0x068
+#define PCIX0_POM0LAH		0x06c
+#define PCIX0_POM0SA		0x070
+#define PCIX0_POM0PCIAL		0x074
+#define PCIX0_POM0PCIAH		0x078
+#define PCIX0_POM1LAL		0x07c
+#define PCIX0_POM1LAH		0x080
+#define PCIX0_POM1SA		0x084
+#define PCIX0_POM1PCIAL		0x088
+#define PCIX0_POM1PCIAH		0x08c
+#define PCIX0_POM2SA		0x090
+#define PCIX0_PIM0SAL		0x098
+#define PCIX0_PIM0SA		PCIX0_PIM0SAL
+#define PCIX0_PIM0LAL		0x09c
+#define PCIX0_PIM0LAH		0x0a0
+#define PCIX0_PIM1SA		0x0a4
+#define PCIX0_PIM1LAL		0x0a8
+#define PCIX0_PIM1LAH		0x0ac
+#define PCIX0_PIM2SAL		0x0b0
+#define PCIX0_PIM2SA		PCIX0_PIM2SAL
+#define PCIX0_PIM2LAL		0x0b4
+#define PCIX0_PIM2LAH		0x0b8
+#define PCIX0_OMCAPID		0x0c0
+#define PCIX0_OMNIPTR		0x0c1
+#define PCIX0_OMMC		0x0c2
+#define PCIX0_OMMA		0x0c4
+#define PCIX0_OMMUA		0x0c8
+#define PCIX0_OMMDATA		0x0cc
+#define PCIX0_OMMEOI		0x0ce
+#define PCIX0_PMCAPID		0x0d0
+#define PCIX0_PMNIPTR		0x0d1
+#define PCIX0_PMC		0x0d2
+#define PCIX0_PMCSR		0x0d4
+#define PCIX0_PMCSRBSE		0x0d6
+#define PCIX0_PMDATA		0x0d7
+#define PCIX0_PMSCRR		0x0d8
+#define PCIX0_CAPID		0x0dc
+#define PCIX0_NIPTR		0x0dd
+#define PCIX0_CMD		0x0de
+#define PCIX0_STS		0x0e0
+#define PCIX0_IDR		0x0e4
+#define PCIX0_CID		0x0e8
+#define PCIX0_RID		0x0ec
+#define PCIX0_PIM0SAH		0x0f8
+#define PCIX0_PIM2SAH		0x0fc
+#define PCIX0_MSGIL		0x100
+#define PCIX0_MSGIH		0x104
+#define PCIX0_MSGOL		0x108
+#define PCIX0_MSGOH		0x10c
+#define PCIX0_IM		0x1f8
+
+
+
+#endif /* __PPC4XX_PCI_H__ */

[PATCH 10/25] powerpc: 4xx PLB to PCI 2.x support

[Benjamin Herrenschmidt]

This adds to the previous patch the support for the 4xx PCI 2.x
bridges.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

This version implement the basic support for the 405GP bridge,
I haven't yet looked at differences that other implementations
may have for the PCI 2.x part.

 arch/powerpc/sysdev/ppc4xx_pci.c |  183 ++++++++++++++++++++++++++++++++++++++-
 arch/powerpc/sysdev/ppc4xx_pci.h |   19 ++++
 2 files changed, 201 insertions(+), 1 deletion(-)

Index: linux-work/arch/powerpc/sysdev/ppc4xx_pci.c
===================================================================
--- linux-work.orig/arch/powerpc/sysdev/ppc4xx_pci.c	2007-12-03 12:09:54.000000000 +1100
+++ linux-work/arch/powerpc/sysdev/ppc4xx_pci.c	2007-12-03 12:10:36.000000000 +1100
@@ -21,6 +21,38 @@ static int dma_offset_set;
 /* Move that to a useable header */
 extern unsigned long total_memory;
 
+static void fixup_ppc4xx_pci_bridge(struct pci_dev *dev)
+{
+	struct pci_controller *hose;
+	struct device_node *np;
+	int i;
+
+	if (dev->devfn != 0 || dev->bus->self != NULL)
+		return;
+
+	hose = pci_bus_to_host(dev->bus);
+	if (hose == NULL)
+		return;
+	np = hose->arch_data;
+
+	if (!of_device_is_compatible(np, "ibm,plb-pciex") &&
+	    !of_device_is_compatible(np, "ibm,plb-pcix") &&
+	    !of_device_is_compatible(np, "ibm,plb-pci"))
+		return;
+
+	/* Hide the PCI host BARs from the kernel as their content doesn't
+	 * fit well in the resource management
+	 */
+	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+		dev->resource[i].start = dev->resource[i].end = 0;
+		dev->resource[i].flags = 0;
+	}
+
+	printk(KERN_INFO "PCI: Hiding 4xx host bridge resources %s\n",
+	       pci_name(dev));
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, fixup_ppc4xx_pci_bridge);
+
 static int __init ppc4xx_parse_dma_ranges(struct pci_controller *hose,
 					  void __iomem *reg,
 					  struct resource *res)
@@ -126,9 +158,158 @@ static int __init ppc4xx_parse_dma_range
 /*
  * 4xx PCI 2.x part
  */
+
+static void __init ppc4xx_configure_pci_PMMs(struct pci_controller *hose,
+					     void __iomem *reg)
+{
+	struct device_node *np = hose->arch_data;
+	u32 la, ma, pcila, pciha;
+	int i, j;
+
+	/* Setup outbound memory windows */
+	for (i = j = 0; i < 3; i++) {
+		struct resource *res = &hose->mem_resources[i];
+
+		/* we only care about memory windows */
+		if (!(res->flags & IORESOURCE_MEM))
+			continue;
+		if (j > 2) {
+			printk(KERN_WARNING "%s: Too many ranges\n",
+			       np->full_name);
+			break;
+		}
+
+		/* Calculate register values */
+		la = res->start;
+#ifdef CONFIG_RESOURCES_64BIT
+		pciha = (res->start - hose->pci_mem_offset) >> 32;
+		pcila = (res->start - hose->pci_mem_offset) & 0xffffffffu;
+#else
+		pciha = 0;
+		pcila = res->start - hose->pci_mem_offset;
+#endif
+
+		ma = res->end + 1 - res->start;
+		if (!is_power_of_2(ma) || ma < 0x1000 || ma > 0xffffffffu) {
+			printk(KERN_WARNING "%s: Resource out of range\n",
+			       np->full_name);
+			continue;
+		}
+		ma = (0xffffffffu << ilog2(ma)) | 0x1;
+		if (res->flags & IORESOURCE_PREFETCH)
+			ma |= 0x2;
+
+		/* Program register values */
+		writel(la, reg + PCIL0_PMM0LA + (0x10 * j));
+		writel(pcila, reg + PCIL0_PMM0PCILA + (0x10 * j));
+		writel(pciha, reg + PCIL0_PMM0PCIHA + (0x10 * j));
+		writel(ma, reg + PCIL0_PMM0MA + (0x10 * j));
+		j++;
+	}
+}
+
+static void __init ppc4xx_configure_pci_PTMs(struct pci_controller *hose,
+					     void __iomem *reg,
+					     const struct resource *res)
+{
+	resource_size_t size = res->end - res->start + 1;
+	u32 sa;
+
+	/* Calculate window size */
+	sa = (0xffffffffu << ilog2(size)) | 1;
+	sa |= 0x1;
+
+	/* RAM is always at 0 local for now */
+	writel(0, reg + PCIL0_PTM1LA);
+	writel(sa, reg + PCIL0_PTM1MS);
+
+	/* Map on PCI side */
+	early_write_config_dword(hose, hose->first_busno, 0,
+				 PCI_BASE_ADDRESS_1, res->start);
+	early_write_config_dword(hose, hose->first_busno, 0,
+				 PCI_BASE_ADDRESS_2, 0x00000000);
+	early_write_config_word(hose, hose->first_busno, 0,
+				PCI_COMMAND, 0x0006);
+}
+
 static void __init ppc4xx_probe_pci_bridge(struct device_node *np)
 {
 	/* NYI */
+	struct resource rsrc_cfg;
+	struct resource rsrc_reg;
+	struct resource dma_window;
+	struct pci_controller *hose = NULL;
+	void __iomem *reg = NULL;
+	const int *bus_range;
+	int primary = 0;
+
+	/* Fetch config space registers address */
+	if (of_address_to_resource(np, 0, &rsrc_cfg)) {
+		printk(KERN_ERR "%s:Can't get PCI config register base !",
+		       np->full_name);
+		return;
+	}
+	/* Fetch host bridge internal registers address */
+	if (of_address_to_resource(np, 3, &rsrc_reg)) {
+		printk(KERN_ERR "%s: Can't get PCI internal register base !",
+		       np->full_name);
+		return;
+	}
+
+	/* Check if primary bridge */
+	if (of_get_property(np, "primary", NULL))
+		primary = 1;
+
+	/* Get bus range if any */
+	bus_range = of_get_property(np, "bus-range", NULL);
+
+	/* Map registers */
+	reg = ioremap(rsrc_reg.start, rsrc_reg.end + 1 - rsrc_reg.start);
+	if (reg == NULL) {
+		printk(KERN_ERR "%s: Can't map registers !", np->full_name);
+		goto fail;
+	}
+
+	/* Allocate the host controller data structure */
+	hose = pcibios_alloc_controller(np);
+	if (!hose)
+		goto fail;
+
+	hose->first_busno = bus_range ? bus_range[0] : 0x0;
+	hose->last_busno = bus_range ? bus_range[1] : 0xff;
+
+	/* Setup config space */
+	setup_indirect_pci(hose, rsrc_cfg.start, rsrc_cfg.start + 0x4, 0);
+
+	/* Disable all windows */
+	writel(0, reg + PCIL0_PMM0MA);
+	writel(0, reg + PCIL0_PMM1MA);
+	writel(0, reg + PCIL0_PMM2MA);
+	writel(0, reg + PCIL0_PTM1MS);
+	writel(0, reg + PCIL0_PTM2MS);
+
+	/* Parse outbound mapping resources */
+	pci_process_bridge_OF_ranges(hose, np, primary);
+
+	/* Parse inbound mapping resources */
+	if (ppc4xx_parse_dma_ranges(hose, reg, &dma_window) != 0)
+		goto fail;
+
+	/* Configure outbound ranges POMs */
+	ppc4xx_configure_pci_PMMs(hose, reg);
+
+	/* Configure inbound ranges PIMs */
+	ppc4xx_configure_pci_PTMs(hose, reg, &dma_window);
+
+	/* We don't need the registers anymore */
+	iounmap(reg);
+	return;
+
+ fail:
+	if (hose)
+		pcibios_free_controller(hose);
+	if (reg)
+		iounmap(reg);
 }
 
 /*
@@ -156,7 +337,7 @@ static void __init ppc4xx_configure_pcix
 		}
 
 		/* Calculate register values */
-#ifdef CONFIG_PTE_64BIT
+#ifdef CONFIG_RESOURCES_64BIT
 		lah = res->start >> 32;
 		lal = res->start & 0xffffffffu;
 		pciah = (res->start - hose->pci_mem_offset) >> 32;
Index: linux-work/arch/powerpc/sysdev/ppc4xx_pci.h
===================================================================
--- linux-work.orig/arch/powerpc/sysdev/ppc4xx_pci.h	2007-12-03 12:09:20.000000000 +1100
+++ linux-work/arch/powerpc/sysdev/ppc4xx_pci.h	2007-12-03 12:10:06.000000000 +1100
@@ -101,6 +101,25 @@
 #define PCIX0_MSGOH		0x10c
 #define PCIX0_IM		0x1f8
 
+/*
+ * 4xx PCI bridge register definitions
+ */
+#define PCIL0_PMM0LA		0x00
+#define PCIL0_PMM0MA		0x04
+#define PCIL0_PMM0PCILA		0x08
+#define PCIL0_PMM0PCIHA		0x0c
+#define PCIL0_PMM1LA		0x10
+#define PCIL0_PMM1MA		0x14
+#define PCIL0_PMM1PCILA		0x18
+#define PCIL0_PMM1PCIHA		0x1c
+#define PCIL0_PMM2LA		0x20
+#define PCIL0_PMM2MA		0x24
+#define PCIL0_PMM2PCILA		0x28
+#define PCIL0_PMM2PCIHA		0x2c
+#define PCIL0_PTM1MS		0x30
+#define PCIL0_PTM1LA		0x34
+#define PCIL0_PTM2MS		0x38
+#define PCIL0_PTM2LA		0x3c
 
 
 #endif /* __PPC4XX_PCI_H__ */

[PATCH 11/25] powerpc: 4xx PLB to PCI Express support

[Benjamin Herrenschmidt]

This adds to the previous 2 patches the support for the 4xx PCI Express
cells as found in the 440SPe revA, revB and 405EX.

Unfortunately, due to significant differences between these, and other
interesting "features" of those pieces of HW, the code isn't as simple
as it is for PCI and PCI-X and some of the functions differ significantly
between the 3 implementations. Thus, not only this code can only support
those 3 implementations for now and will refuse to operate on any other,
but there are added ifdef's to avoid the bloat of building a fairly large
amount of code on platforms that don't need it.

Also, this code currently only supports fully initializing root complex
nodes, not endpoint. Some more code will have to be lifted from the
arch/ppc implementation to add the endpoint support, though it's mostly
differences in memory mapping, and the question on how to represent
endpoint mode PCI in the device-tree is thus open.

Many thanks to Stefan Roese for testing & fixing up the 405EX bits !

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stefan Roese <sr@denx.de>
---

 arch/powerpc/Kconfig             |    1 
 arch/powerpc/sysdev/Kconfig      |    8 
 arch/powerpc/sysdev/ppc4xx_pci.c |  999 ++++++++++++++++++++++++++++++++++++++-
 arch/powerpc/sysdev/ppc4xx_pci.h |  242 +++++++++
 4 files changed, 1230 insertions(+), 20 deletions(-)

Index: linux-work/arch/powerpc/sysdev/ppc4xx_pci.c
===================================================================
--- linux-work.orig/arch/powerpc/sysdev/ppc4xx_pci.c	2007-12-05 11:10:44.000000000 +1100
+++ linux-work/arch/powerpc/sysdev/ppc4xx_pci.c	2007-12-05 11:57:26.000000000 +1100
@@ -3,16 +3,31 @@
  *
  * Copyright 2007 Ben. Herrenschmidt <benh@kernel.crashing.org>, IBM Corp.
  *
+ * Most PCI Express code is coming from Stefan Roese implementation for
+ * arch/ppc in the Denx tree, slightly reworked by me.
+ *
+ * Copyright 2007 DENX Software Engineering, Stefan Roese <sr@denx.de>
+ *
+ * Some of that comes itself from a previous implementation for 440SPE only
+ * by Roland Dreier:
+ *
+ * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Roland Dreier <rolandd@cisco.com>
+ *
  */
 
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/of.h>
+#include <linux/bootmem.h>
+#include <linux/delay.h>
 
 #include <asm/io.h>
 #include <asm/pci-bridge.h>
 #include <asm/machdep.h>
+#include <asm/dcr.h>
+#include <asm/dcr-regs.h>
 
 #include "ppc4xx_pci.h"
 
@@ -21,6 +36,17 @@ static int dma_offset_set;
 /* Move that to a useable header */
 extern unsigned long total_memory;
 
+#define U64_TO_U32_LOW(val)	((u32)((val) & 0x00000000ffffffffULL))
+#define U64_TO_U32_HIGH(val)	((u32)((val) >> 32))
+
+#ifdef CONFIG_RESOURCES_64BIT
+#define RES_TO_U32_LOW(val)	U64_TO_U32_LOW(val)
+#define RES_TO_U32_HIGH(val)	U64_TO_U32_HIGH(val)
+#else
+#define RES_TO_U32_LOW(val)	(val)
+#define RES_TO_U32_HIGH(val)	(0)
+#endif
+
 static void fixup_ppc4xx_pci_bridge(struct pci_dev *dev)
 {
 	struct pci_controller *hose;
@@ -127,8 +153,9 @@ static int __init ppc4xx_parse_dma_range
 	 * DMA bounce buffers
 	 */
 	if (size < total_memory) {
-		printk(KERN_ERR "%s: dma-ranges too small\n",
-		       node->full_name);
+		printk(KERN_ERR "%s: dma-ranges too small "
+		       "(size=%llx total_memory=%lx)\n",
+		       node->full_name, size, total_memory);
 		return -ENXIO;
 	}
 
@@ -181,13 +208,8 @@ static void __init ppc4xx_configure_pci_
 
 		/* Calculate register values */
 		la = res->start;
-#ifdef CONFIG_RESOURCES_64BIT
-		pciha = (res->start - hose->pci_mem_offset) >> 32;
-		pcila = (res->start - hose->pci_mem_offset) & 0xffffffffu;
-#else
-		pciha = 0;
-		pcila = res->start - hose->pci_mem_offset;
-#endif
+		pciha = RES_TO_U32_HIGH(res->start - hose->pci_mem_offset);
+		pcila = RES_TO_U32_LOW(res->start - hose->pci_mem_offset);
 
 		ma = res->end + 1 - res->start;
 		if (!is_power_of_2(ma) || ma < 0x1000 || ma > 0xffffffffu) {
@@ -337,16 +359,10 @@ static void __init ppc4xx_configure_pcix
 		}
 
 		/* Calculate register values */
-#ifdef CONFIG_RESOURCES_64BIT
-		lah = res->start >> 32;
-		lal = res->start & 0xffffffffu;
-		pciah = (res->start - hose->pci_mem_offset) >> 32;
-		pcial = (res->start - hose->pci_mem_offset) & 0xffffffffu;
-#else
-		lah = pciah = 0;
-		lal = res->start;
-		pcial = res->start - hose->pci_mem_offset;
-#endif
+		lah = RES_TO_U32_HIGH(res->start);
+		lal = RES_TO_U32_LOW(res->start);
+		pciah = RES_TO_U32_HIGH(res->start - hose->pci_mem_offset);
+		pcial = RES_TO_U32_LOW(res->start - hose->pci_mem_offset);
 		sa = res->end + 1 - res->start;
 		if (!is_power_of_2(sa) || sa < 0x100000 ||
 		    sa > 0xffffffffu) {
@@ -496,20 +512,963 @@ static void __init ppc4xx_probe_pcix_bri
 		iounmap(reg);
 }
 
+#ifdef CONFIG_PPC4xx_PCI_EXPRESS
+
 /*
  * 4xx PCI-Express part
+ *
+ * We support 3 parts currently based on the compatible property:
+ *
+ * ibm,plb-pciex-440speA
+ * ibm,plb-pciex-440speB
+ * ibm,plb-pciex-405ex
+ *
+ * Anything else will be rejected for now as they are all subtly
+ * different unfortunately.
+ *
  */
+
+#define MAX_PCIE_BUS_MAPPED	0x10
+
+struct ppc4xx_pciex_port
+{
+	struct pci_controller	*hose;
+	struct device_node	*node;
+	unsigned int		index;
+	int			endpoint;
+	unsigned int		sdr_base;
+	dcr_host_t		dcrs;
+	struct resource		cfg_space;
+	struct resource		utl_regs;
+};
+
+static struct ppc4xx_pciex_port *ppc4xx_pciex_ports;
+static unsigned int ppc4xx_pciex_port_count;
+
+struct ppc4xx_pciex_hwops
+{
+	int (*core_init)(struct device_node *np);
+	int (*port_init_hw)(struct ppc4xx_pciex_port *port);
+	int (*setup_utl)(struct ppc4xx_pciex_port *port);
+};
+
+static struct ppc4xx_pciex_hwops *ppc4xx_pciex_hwops;
+
+#ifdef CONFIG_44x
+
+/* Check various reset bits of the 440SPe PCIe core */
+static int __init ppc440spe_pciex_check_reset(struct device_node *np)
+{
+	u32 valPE0, valPE1, valPE2;
+	int err = 0;
+
+	/* SDR0_PEGPLLLCT1 reset */
+	if (!(mfdcri(SDR0, PESDR0_PLLLCT1) & 0x01000000)) {
+		/*
+		 * the PCIe core was probably already initialised
+		 * by firmware - let's re-reset RCSSET regs
+		 *
+		 * -- Shouldn't we also re-reset the whole thing ? -- BenH
+		 */
+		pr_debug("PCIE: SDR0_PLLLCT1 already reset.\n");
+		mtdcri(SDR0, PESDR0_440SPE_RCSSET, 0x01010000);
+		mtdcri(SDR0, PESDR1_440SPE_RCSSET, 0x01010000);
+		mtdcri(SDR0, PESDR2_440SPE_RCSSET, 0x01010000);
+	}
+
+	valPE0 = mfdcri(SDR0, PESDR0_440SPE_RCSSET);
+	valPE1 = mfdcri(SDR0, PESDR1_440SPE_RCSSET);
+	valPE2 = mfdcri(SDR0, PESDR2_440SPE_RCSSET);
+
+	/* SDR0_PExRCSSET rstgu */
+	if (!(valPE0 & 0x01000000) ||
+	    !(valPE1 & 0x01000000) ||
+	    !(valPE2 & 0x01000000)) {
+		printk(KERN_INFO "PCIE: SDR0_PExRCSSET rstgu error\n");
+		err = -1;
+	}
+
+	/* SDR0_PExRCSSET rstdl */
+	if (!(valPE0 & 0x00010000) ||
+	    !(valPE1 & 0x00010000) ||
+	    !(valPE2 & 0x00010000)) {
+		printk(KERN_INFO "PCIE: SDR0_PExRCSSET rstdl error\n");
+		err = -1;
+	}
+
+	/* SDR0_PExRCSSET rstpyn */
+	if ((valPE0 & 0x00001000) ||
+	    (valPE1 & 0x00001000) ||
+	    (valPE2 & 0x00001000)) {
+		printk(KERN_INFO "PCIE: SDR0_PExRCSSET rstpyn error\n");
+		err = -1;
+	}
+
+	/* SDR0_PExRCSSET hldplb */
+	if ((valPE0 & 0x10000000) ||
+	    (valPE1 & 0x10000000) ||
+	    (valPE2 & 0x10000000)) {
+		printk(KERN_INFO "PCIE: SDR0_PExRCSSET hldplb error\n");
+		err = -1;
+	}
+
+	/* SDR0_PExRCSSET rdy */
+	if ((valPE0 & 0x00100000) ||
+	    (valPE1 & 0x00100000) ||
+	    (valPE2 & 0x00100000)) {
+		printk(KERN_INFO "PCIE: SDR0_PExRCSSET rdy error\n");
+		err = -1;
+	}
+
+	/* SDR0_PExRCSSET shutdown */
+	if ((valPE0 & 0x00000100) ||
+	    (valPE1 & 0x00000100) ||
+	    (valPE2 & 0x00000100)) {
+		printk(KERN_INFO "PCIE: SDR0_PExRCSSET shutdown error\n");
+		err = -1;
+	}
+
+	return err;
+}
+
+/* Global PCIe core initializations for 440SPe core */
+static int __init ppc440spe_pciex_core_init(struct device_node *np)
+{
+	int time_out = 20;
+
+	/* Set PLL clock receiver to LVPECL */
+	mtdcri(SDR0, PESDR0_PLLLCT1, mfdcri(SDR0, PESDR0_PLLLCT1) | 1 << 28);
+
+	/* Shouldn't we do all the calibration stuff etc... here ? */
+	if (ppc440spe_pciex_check_reset(np))
+		return -ENXIO;
+
+	if (!(mfdcri(SDR0, PESDR0_PLLLCT2) & 0x10000)) {
+		printk(KERN_INFO "PCIE: PESDR_PLLCT2 resistance calibration "
+		       "failed (0x%08x)\n",
+		       mfdcri(SDR0, PESDR0_PLLLCT2));
+		return -1;
+	}
+
+	/* De-assert reset of PCIe PLL, wait for lock */
+	mtdcri(SDR0, PESDR0_PLLLCT1,
+	       mfdcri(SDR0, PESDR0_PLLLCT1) & ~(1 << 24));
+	udelay(3);
+
+	while (time_out) {
+		if (!(mfdcri(SDR0, PESDR0_PLLLCT3) & 0x10000000)) {
+			time_out--;
+			udelay(1);
+		} else
+			break;
+	}
+	if (!time_out) {
+		printk(KERN_INFO "PCIE: VCO output not locked\n");
+		return -1;
+	}
+
+	pr_debug("PCIE initialization OK\n");
+
+	return 3;
+}
+
+static int ppc440spe_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+{
+	u32 val = 1 << 24;
+
+	if (port->endpoint)
+		val = PTYPE_LEGACY_ENDPOINT << 20;
+	else
+		val = PTYPE_ROOT_PORT << 20;
+
+	if (port->index == 0)
+		val |= LNKW_X8 << 12;
+	else
+		val |= LNKW_X4 << 12;
+
+	mtdcri(SDR0, port->sdr_base + PESDRn_DLPSET, val);
+	mtdcri(SDR0, port->sdr_base + PESDRn_UTLSET1, 0x20222222);
+	if (of_device_is_compatible(port->node, "ibm,plb-pciex-440speA"))
+		mtdcri(SDR0, port->sdr_base + PESDRn_UTLSET2, 0x11000000);
+	mtdcri(SDR0, port->sdr_base + PESDRn_440SPE_HSSL0SET1, 0x35000000);
+	mtdcri(SDR0, port->sdr_base + PESDRn_440SPE_HSSL1SET1, 0x35000000);
+	mtdcri(SDR0, port->sdr_base + PESDRn_440SPE_HSSL2SET1, 0x35000000);
+	mtdcri(SDR0, port->sdr_base + PESDRn_440SPE_HSSL3SET1, 0x35000000);
+	if (port->index == 0) {
+		mtdcri(SDR0, port->sdr_base + PESDRn_440SPE_HSSL4SET1,
+		       0x35000000);
+		mtdcri(SDR0, port->sdr_base + PESDRn_440SPE_HSSL5SET1,
+		       0x35000000);
+		mtdcri(SDR0, port->sdr_base + PESDRn_440SPE_HSSL6SET1,
+		       0x35000000);
+		mtdcri(SDR0, port->sdr_base + PESDRn_440SPE_HSSL7SET1,
+		       0x35000000);
+	}
+	val = mfdcri(SDR0, port->sdr_base + PESDRn_RCSSET);
+	mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET,
+	       (val & ~(1 << 24 | 1 << 16)) | 1 << 12);
+
+	return 0;
+}
+
+static int ppc440speA_pciex_init_utl(struct ppc4xx_pciex_port *port)
+{
+	void __iomem *utl_base;
+
+	/* XXX Check what that value means... I hate magic */
+	dcr_write(port->dcrs, DCRO_PEGPL_SPECIAL, 0x68782800);
+
+	utl_base = ioremap(port->utl_regs.start, 0x100);
+	BUG_ON(utl_base == NULL);
+
+	/*
+	 * Set buffer allocations and then assert VRB and TXE.
+	 */
+	out_be32(utl_base + PEUTL_OUTTR,   0x08000000);
+	out_be32(utl_base + PEUTL_INTR,    0x02000000);
+	out_be32(utl_base + PEUTL_OPDBSZ,  0x10000000);
+	out_be32(utl_base + PEUTL_PBBSZ,   0x53000000);
+	out_be32(utl_base + PEUTL_IPHBSZ,  0x08000000);
+	out_be32(utl_base + PEUTL_IPDBSZ,  0x10000000);
+	out_be32(utl_base + PEUTL_RCIRQEN, 0x00f00000);
+	out_be32(utl_base + PEUTL_PCTL,    0x80800066);
+
+	iounmap(utl_base);
+
+	return 0;
+}
+
+static struct ppc4xx_pciex_hwops ppc440speA_pcie_hwops __initdata =
+{
+	.core_init	= ppc440spe_pciex_core_init,
+	.port_init_hw	= ppc440spe_pciex_init_port_hw,
+	.setup_utl	= ppc440speA_pciex_init_utl,
+};
+
+static struct ppc4xx_pciex_hwops ppc440speB_pcie_hwops __initdata =
+{
+	.core_init	= ppc440spe_pciex_core_init,
+	.port_init_hw	= ppc440spe_pciex_init_port_hw,
+};
+
+
+#endif /* CONFIG_44x */
+
+#ifdef CONFIG_40x
+
+static int __init ppc405ex_pciex_core_init(struct device_node *np)
+{
+	/* Nothing to do, return 2 ports */
+	return 2;
+}
+
+static void ppc405ex_pcie_phy_reset(struct ppc4xx_pciex_port *port)
+{
+	/* Assert the PE0_PHY reset */
+	mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET, 0x01010000);
+	msleep(1);
+
+	/* deassert the PE0_hotreset */
+	if (port->endpoint)
+		mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET, 0x01111000);
+	else
+		mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET, 0x01101000);
+
+	/* poll for phy !reset */
+	/* XXX FIXME add timeout */
+	while (!(mfdcri(SDR0, port->sdr_base + PESDRn_405EX_PHYSTA) & 0x00001000))
+		;
+
+	/* deassert the PE0_gpl_utl_reset */
+	mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET, 0x00101000);
+}
+
+static int ppc405ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+{
+	u32 val;
+
+	if (port->endpoint)
+		val = PTYPE_LEGACY_ENDPOINT;
+	else
+		val = PTYPE_ROOT_PORT;
+
+	mtdcri(SDR0, port->sdr_base + PESDRn_DLPSET,
+	       1 << 24 | val << 20 | LNKW_X1 << 12);
+
+	mtdcri(SDR0, port->sdr_base + PESDRn_UTLSET1, 0x00000000);
+	mtdcri(SDR0, port->sdr_base + PESDRn_UTLSET2, 0x01010000);
+	mtdcri(SDR0, port->sdr_base + PESDRn_405EX_PHYSET1, 0x720F0000);
+	mtdcri(SDR0, port->sdr_base + PESDRn_405EX_PHYSET2, 0x70600003);
+
+	/*
+	 * Only reset the PHY when no link is currently established.
+	 * This is for the Atheros PCIe board which has problems to establish
+	 * the link (again) after this PHY reset. All other currently tested
+	 * PCIe boards don't show this problem.
+	 * This has to be re-tested and fixed in a later release!
+	 */
+#if 0 /* XXX FIXME: Not resetting the PHY will leave all resources
+       * configured as done previously by U-Boot. Then Linux will currently
+       * not reassign them. So the PHY reset is now done always. This will
+       * lead to problems with the Atheros PCIe board again.
+       */
+	val = mfdcri(SDR0, port->sdr_base + PESDRn_LOOP);
+	if (!(val & 0x00001000))
+		ppc405ex_pcie_phy_reset(port);
+#else
+	ppc405ex_pcie_phy_reset(port);
+#endif
+
+	dcr_write(port->dcrs, DCRO_PEGPL_CFG, 0x10000000);  /* guarded on */
+
+	return 0;
+}
+
+static int ppc405ex_pciex_init_utl(struct ppc4xx_pciex_port *port)
+{
+	void __iomem *utl_base;
+
+	dcr_write(port->dcrs, DCRO_PEGPL_SPECIAL, 0x0);
+
+	utl_base = ioremap(port->utl_regs.start, 0x100);
+	BUG_ON(utl_base == NULL);
+
+	/*
+	 * Set buffer allocations and then assert VRB and TXE.
+	 */
+	out_be32(utl_base + PEUTL_OUTTR,   0x02000000);
+	out_be32(utl_base + PEUTL_INTR,    0x02000000);
+	out_be32(utl_base + PEUTL_OPDBSZ,  0x04000000);
+	out_be32(utl_base + PEUTL_PBBSZ,   0x21000000);
+	out_be32(utl_base + PEUTL_IPHBSZ,  0x02000000);
+	out_be32(utl_base + PEUTL_IPDBSZ,  0x04000000);
+	out_be32(utl_base + PEUTL_RCIRQEN, 0x00f00000);
+	out_be32(utl_base + PEUTL_PCTL,    0x80800066);
+
+	out_be32(utl_base + PEUTL_PBCTL,   0x0800000c);
+	out_be32(utl_base + PEUTL_RCSTA,
+		 in_be32(utl_base + PEUTL_RCSTA) | 0x000040000);
+
+	iounmap(utl_base);
+
+	return 0;
+}
+
+static struct ppc4xx_pciex_hwops ppc405ex_pcie_hwops __initdata =
+{
+	.core_init	= ppc405ex_pciex_core_init,
+	.port_init_hw	= ppc405ex_pciex_init_port_hw,
+	.setup_utl	= ppc405ex_pciex_init_utl,
+};
+
+#endif /* CONFIG_40x */
+
+
+/* Check that the core has been initied and if not, do it */
+static int __init ppc4xx_pciex_check_core_init(struct device_node *np)
+{
+	static int core_init;
+	int count = -ENODEV;
+
+	if (core_init++)
+		return 0;
+
+#ifdef CONFIG_44x
+	if (of_device_is_compatible(np, "ibm,plb-pciex-440speA"))
+		ppc4xx_pciex_hwops = &ppc440speA_pcie_hwops;
+	else if (of_device_is_compatible(np, "ibm,plb-pciex-440speB"))
+		ppc4xx_pciex_hwops = &ppc440speB_pcie_hwops;
+#endif /* CONFIG_44x    */
+#ifdef CONFIG_40x
+	if (of_device_is_compatible(np, "ibm,plb-pciex-405ex"))
+		ppc4xx_pciex_hwops = &ppc405ex_pcie_hwops;
+#endif
+	if (ppc4xx_pciex_hwops == NULL) {
+		printk(KERN_WARNING "PCIE: unknown host type %s\n",
+		       np->full_name);
+		return -ENODEV;
+	}
+
+	count = ppc4xx_pciex_hwops->core_init(np);
+	if (count > 0) {
+		ppc4xx_pciex_ports =
+		       kzalloc(count * sizeof(struct ppc4xx_pciex_port),
+			       GFP_KERNEL);
+		if (ppc4xx_pciex_ports) {
+			ppc4xx_pciex_port_count = count;
+			return 0;
+		}
+		printk(KERN_WARNING "PCIE: failed to allocate ports array\n");
+		return -ENOMEM;
+	}
+	return -ENODEV;
+}
+
+static void __init ppc4xx_pciex_port_init_mapping(struct ppc4xx_pciex_port *port)
+{
+	/* We map PCI Express configuration based on the reg property */
+	dcr_write(port->dcrs, DCRO_PEGPL_CFGBAH,
+		  RES_TO_U32_HIGH(port->cfg_space.start));
+	dcr_write(port->dcrs, DCRO_PEGPL_CFGBAL,
+		  RES_TO_U32_LOW(port->cfg_space.start));
+
+	/* XXX FIXME: Use size from reg property. For now, map 512M */
+	dcr_write(port->dcrs, DCRO_PEGPL_CFGMSK, 0xe0000001);
+
+	/* We map UTL registers based on the reg property */
+	dcr_write(port->dcrs, DCRO_PEGPL_REGBAH,
+		  RES_TO_U32_HIGH(port->utl_regs.start));
+	dcr_write(port->dcrs, DCRO_PEGPL_REGBAL,
+		  RES_TO_U32_LOW(port->utl_regs.start));
+
+	/* XXX FIXME: Use size from reg property */
+	dcr_write(port->dcrs, DCRO_PEGPL_REGMSK, 0x00007001);
+
+	/* Disable all other outbound windows */
+	dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL, 0);
+	dcr_write(port->dcrs, DCRO_PEGPL_OMR2MSKL, 0);
+	dcr_write(port->dcrs, DCRO_PEGPL_OMR3MSKL, 0);
+	dcr_write(port->dcrs, DCRO_PEGPL_MSGMSK, 0);
+}
+
+static int __init ppc4xx_pciex_port_init(struct ppc4xx_pciex_port *port)
+{
+	int attempts, rc = 0;
+	u32 val;
+
+	/* Check if it's endpoint or root complex
+	 *
+	 * XXX Do we want to use the device-tree instead ? --BenH.
+	 */
+	val = mfdcri(SDR0, port->sdr_base + PESDRn_DLPSET);
+	port->endpoint = (((val >> 20) & 0xf) != PTYPE_ROOT_PORT);
+
+	/* Init HW */
+	if (ppc4xx_pciex_hwops->port_init_hw)
+		rc = ppc4xx_pciex_hwops->port_init_hw(port);
+	if (rc != 0)
+		return rc;
+
+	/*
+	 * Notice: the following delay has critical impact on device
+	 * initialization - if too short (<50ms) the link doesn't get up.
+	 *
+	 * XXX FIXME: There are various issues with that link up thingy,
+	 * we could just wait for the link with a timeout but Stefan says
+	 * some cards need more time even after the link is up. I'll
+	 * investigate. For now, we keep a fixed 1s delay.
+	 *
+	 * Ultimately, it should be made asynchronous so all ports are
+	 * brought up simultaneously though.
+	 */
+	printk(KERN_INFO "PCIE%d: Waiting for link to go up...\n",
+	       port->index);
+	msleep(1000);
+
+	/*
+	 * Check that we exited the reset state properly
+	 */
+	val = mfdcri(SDR0, port->sdr_base + PESDRn_RCSSTS);
+	if (val & (1 << 20)) {
+		printk(KERN_WARNING "PCIE%d: PGRST failed %08x\n",
+		       port->index, val);
+		return -1;
+	}
+
+	/*
+	 * Verify link is up
+	 */
+	val = mfdcri(SDR0, port->sdr_base + PESDRn_LOOP);
+	if (!(val & 0x00001000)) {
+		printk(KERN_INFO "PCIE%d: link is not up !\n",
+		       port->index);
+		return -1;
+	}
+
+	printk(KERN_INFO "PCIE%d: link is up !\n",
+	       port->index);
+
+	/*
+	 * Initialize mapping: disable all regions and configure
+	 * CFG and REG regions based on resources in the device tree
+	 */
+	ppc4xx_pciex_port_init_mapping(port);
+
+	/*
+	 * Setup UTL registers - but only on revA!
+	 * We use default settings for revB chip.
+	 *
+	 * To be reworked. We may also be able to move that to
+	 * before the link wait
+	 * --BenH.
+	 */
+	if (ppc4xx_pciex_hwops->setup_utl)
+		ppc4xx_pciex_hwops->setup_utl(port);
+
+	/*
+	 * Check for VC0 active and assert RDY.
+	 */
+	attempts = 10;
+	while (!(mfdcri(SDR0, port->sdr_base + PESDRn_RCSSTS) & (1 << 16))) {
+		if (!(attempts--)) {
+			printk(KERN_INFO "PCIE%d: VC0 not active\n",
+			       port->index);
+			return -1;
+		}
+		msleep(1000);
+	}
+	mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET,
+	       mfdcri(SDR0, port->sdr_base + PESDRn_RCSSET) | 1 << 20);
+	msleep(100);
+
+	return 0;
+}
+
+static int ppc4xx_pciex_validate_bdf(struct ppc4xx_pciex_port *port,
+				     struct pci_bus *bus,
+				     unsigned int devfn)
+{
+	static int message;
+
+	/* Endpoint can not generate upstream(remote) config cycles */
+	if (port->endpoint && bus->number != port->hose->first_busno)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	/* Check we are within the mapped range */
+	if (bus->number > port->hose->last_busno) {
+		if (!message) {
+			printk(KERN_WARNING "Warning! Probing bus %u"
+			       " out of range !\n", bus->number);
+			message++;
+		}
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	}
+
+	/* The root complex has only one device / function */
+	if (bus->number == port->hose->first_busno && devfn != 0)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	/* The other side of the RC has only one device as well */
+	if (bus->number == (port->hose->first_busno + 1) &&
+	    PCI_SLOT(devfn) != 0)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	return 0;
+}
+
+static void __iomem *ppc4xx_pciex_get_config_base(struct ppc4xx_pciex_port *port,
+						  struct pci_bus *bus,
+						  unsigned int devfn)
+{
+	int relbus;
+
+	/* Remove the casts when we finally remove the stupid volatile
+	 * in struct pci_controller
+	 */
+	if (bus->number == port->hose->first_busno)
+		return (void __iomem *)port->hose->cfg_addr;
+
+	relbus = bus->number - (port->hose->first_busno + 1);
+	return (void __iomem *)port->hose->cfg_data +
+		((relbus  << 20) | (devfn << 12));
+}
+
+static int ppc4xx_pciex_read_config(struct pci_bus *bus, unsigned int devfn,
+				    int offset, int len, u32 *val)
+{
+	struct pci_controller *hose = (struct pci_controller *) bus->sysdata;
+	struct ppc4xx_pciex_port *port =
+		&ppc4xx_pciex_ports[hose->indirect_type];
+	void __iomem *addr;
+	u32 gpl_cfg;
+
+	BUG_ON(hose != port->hose);
+
+	if (ppc4xx_pciex_validate_bdf(port, bus, devfn) != 0)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	addr = ppc4xx_pciex_get_config_base(port, bus, devfn);
+
+	/*
+	 * Reading from configuration space of non-existing device can
+	 * generate transaction errors. For the read duration we suppress
+	 * assertion of machine check exceptions to avoid those.
+	 */
+	gpl_cfg = dcr_read(port->dcrs, DCRO_PEGPL_CFG);
+	dcr_write(port->dcrs, DCRO_PEGPL_CFG, gpl_cfg | GPL_DMER_MASK_DISA);
+
+	switch (len) {
+	case 1:
+		*val = in_8((u8 *)(addr + offset));
+		break;
+	case 2:
+		*val = in_le16((u16 *)(addr + offset));
+		break;
+	default:
+		*val = in_le32((u32 *)(addr + offset));
+		break;
+	}
+
+	pr_debug("pcie-config-read: bus=%3d [%3d..%3d] devfn=0x%04x"
+		 " offset=0x%04x len=%d, addr=0x%p val=0x%08x\n",
+		 bus->number, hose->first_busno, hose->last_busno,
+		 devfn, offset, len, addr + offset, *val);
+
+	dcr_write(port->dcrs, DCRO_PEGPL_CFG, gpl_cfg);
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int ppc4xx_pciex_write_config(struct pci_bus *bus, unsigned int devfn,
+				     int offset, int len, u32 val)
+{
+	struct pci_controller *hose = (struct pci_controller *) bus->sysdata;
+	struct ppc4xx_pciex_port *port =
+		&ppc4xx_pciex_ports[hose->indirect_type];
+	void __iomem *addr;
+	u32 gpl_cfg;
+
+	if (ppc4xx_pciex_validate_bdf(port, bus, devfn) != 0)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	addr = ppc4xx_pciex_get_config_base(port, bus, devfn);
+
+	/*
+	 * Reading from configuration space of non-existing device can
+	 * generate transaction errors. For the read duration we suppress
+	 * assertion of machine check exceptions to avoid those.
+	 */
+	gpl_cfg = dcr_read(port->dcrs, DCRO_PEGPL_CFG);
+	dcr_write(port->dcrs, DCRO_PEGPL_CFG, gpl_cfg | GPL_DMER_MASK_DISA);
+
+	pr_debug("pcie-config-write: bus=%3d [%3d..%3d] devfn=0x%04x"
+		 " offset=0x%04x len=%d, addr=0x%p val=0x%08x\n",
+		 bus->number, hose->first_busno, hose->last_busno,
+		 devfn, offset, len, addr + offset, val);
+
+	switch (len) {
+	case 1:
+		out_8((u8 *)(addr + offset), val);
+		break;
+	case 2:
+		out_le16((u16 *)(addr + offset), val);
+		break;
+	default:
+		out_le32((u32 *)(addr + offset), val);
+		break;
+	}
+
+	dcr_write(port->dcrs, DCRO_PEGPL_CFG, gpl_cfg);
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops ppc4xx_pciex_pci_ops =
+{
+	.read  = ppc4xx_pciex_read_config,
+	.write = ppc4xx_pciex_write_config,
+};
+
+static void __init ppc4xx_configure_pciex_POMs(struct ppc4xx_pciex_port *port,
+					       struct pci_controller *hose,
+					       void __iomem *mbase)
+{
+	u32 lah, lal, pciah, pcial, sa;
+	int i, j;
+
+	/* Setup outbound memory windows */
+	for (i = j = 0; i < 3; i++) {
+		struct resource *res = &hose->mem_resources[i];
+
+		/* we only care about memory windows */
+		if (!(res->flags & IORESOURCE_MEM))
+			continue;
+		if (j > 1) {
+			printk(KERN_WARNING "%s: Too many ranges\n",
+			       port->node->full_name);
+			break;
+		}
+
+		/* Calculate register values */
+		lah = RES_TO_U32_HIGH(res->start);
+		lal = RES_TO_U32_LOW(res->start);
+		pciah = RES_TO_U32_HIGH(res->start - hose->pci_mem_offset);
+		pcial = RES_TO_U32_LOW(res->start - hose->pci_mem_offset);
+		sa = res->end + 1 - res->start;
+		if (!is_power_of_2(sa) || sa < 0x100000 ||
+		    sa > 0xffffffffu) {
+			printk(KERN_WARNING "%s: Resource out of range\n",
+			       port->node->full_name);
+			continue;
+		}
+		sa = (0xffffffffu << ilog2(sa)) | 0x1;
+
+		/* Program register values */
+		switch (j) {
+		case 0:
+			out_le32(mbase + PECFG_POM0LAH, pciah);
+			out_le32(mbase + PECFG_POM0LAL, pcial);
+			dcr_write(port->dcrs, DCRO_PEGPL_OMR1BAH, lah);
+			dcr_write(port->dcrs, DCRO_PEGPL_OMR1BAL, lal);
+			dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKH, 0x7fffffff);
+			dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL, sa | 3);
+			break;
+		case 1:
+			out_le32(mbase + PECFG_POM1LAH, pciah);
+			out_le32(mbase + PECFG_POM1LAL, pcial);
+			dcr_write(port->dcrs, DCRO_PEGPL_OMR2BAH, lah);
+			dcr_write(port->dcrs, DCRO_PEGPL_OMR2BAL, lal);
+			dcr_write(port->dcrs, DCRO_PEGPL_OMR2MSKH, 0x7fffffff);
+			dcr_write(port->dcrs, DCRO_PEGPL_OMR2MSKL, sa | 3);
+			break;
+		}
+		j++;
+	}
+
+	/* Configure IO, always 64K starting at 0 */
+	if (hose->io_resource.flags & IORESOURCE_IO) {
+		lah = RES_TO_U32_HIGH(hose->io_base_phys);
+		lal = RES_TO_U32_LOW(hose->io_base_phys);
+		out_le32(mbase + PECFG_POM2LAH, 0);
+		out_le32(mbase + PECFG_POM2LAL, 0);
+		dcr_write(port->dcrs, DCRO_PEGPL_OMR3BAH, lah);
+		dcr_write(port->dcrs, DCRO_PEGPL_OMR3BAL, lal);
+		dcr_write(port->dcrs, DCRO_PEGPL_OMR3MSKH, 0x7fffffff);
+		dcr_write(port->dcrs, DCRO_PEGPL_OMR3MSKL, 0xffff0000 | 3);
+	}
+}
+
+static void __init ppc4xx_configure_pciex_PIMs(struct ppc4xx_pciex_port *port,
+					       struct pci_controller *hose,
+					       void __iomem *mbase,
+					       struct resource *res)
+{
+	resource_size_t size = res->end - res->start + 1;
+	u64 sa;
+
+	/* Calculate window size */
+	sa = (0xffffffffffffffffull << ilog2(size));;
+	if (res->flags & IORESOURCE_PREFETCH)
+		sa |= 0x8;
+
+	out_le32(mbase + PECFG_BAR0HMPA, RES_TO_U32_HIGH(sa));
+	out_le32(mbase + PECFG_BAR0LMPA, RES_TO_U32_LOW(sa));
+
+	/* The setup of the split looks weird to me ... let's see if it works */
+	out_le32(mbase + PECFG_PIM0LAL, 0x00000000);
+	out_le32(mbase + PECFG_PIM0LAH, 0x00000000);
+	out_le32(mbase + PECFG_PIM1LAL, 0x00000000);
+	out_le32(mbase + PECFG_PIM1LAH, 0x00000000);
+	out_le32(mbase + PECFG_PIM01SAH, 0xffff0000);
+	out_le32(mbase + PECFG_PIM01SAL, 0x00000000);
+
+	/* Enable inbound mapping */
+	out_le32(mbase + PECFG_PIMEN, 0x1);
+
+	out_le32(mbase + PCI_BASE_ADDRESS_0, RES_TO_U32_LOW(res->start));
+	out_le32(mbase + PCI_BASE_ADDRESS_1, RES_TO_U32_HIGH(res->start));
+
+	/* Enable I/O, Mem, and Busmaster cycles */
+	out_le16(mbase + PCI_COMMAND,
+		 in_le16(mbase + PCI_COMMAND) |
+		 PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+}
+
+static void __init ppc4xx_pciex_port_setup_hose(struct ppc4xx_pciex_port *port)
+{
+	struct resource dma_window;
+	struct pci_controller *hose = NULL;
+	const int *bus_range;
+	int primary = 0, busses;
+	void __iomem *mbase = NULL, *cfg_data = NULL;
+
+	/* XXX FIXME: Handle endpoint mode properly */
+	if (port->endpoint)
+		return;
+
+	/* Check if primary bridge */
+	if (of_get_property(port->node, "primary", NULL))
+		primary = 1;
+
+	/* Get bus range if any */
+	bus_range = of_get_property(port->node, "bus-range", NULL);
+
+	/* Allocate the host controller data structure */
+	hose = pcibios_alloc_controller(port->node);
+	if (!hose)
+		goto fail;
+
+	/* We stick the port number in "indirect_type" so the config space
+	 * ops can retrieve the port data structure easily
+	 */
+	hose->indirect_type = port->index;
+
+	/* Get bus range */
+	hose->first_busno = bus_range ? bus_range[0] : 0x0;
+	hose->last_busno = bus_range ? bus_range[1] : 0xff;
+
+	/* Because of how big mapping the config space is (1M per bus), we
+	 * limit how many busses we support. In the long run, we could replace
+	 * that with something akin to kmap_atomic instead. We set aside 1 bus
+	 * for the host itself too.
+	 */
+	busses = hose->last_busno - hose->first_busno; /* This is off by 1 */
+	if (busses > MAX_PCIE_BUS_MAPPED) {
+		busses = MAX_PCIE_BUS_MAPPED;
+		hose->last_busno = hose->first_busno + busses;
+	}
+
+	/* We map the external config space in cfg_data and the host config
+	 * space in cfg_addr. External space is 1M per bus, internal space
+	 * is 4K
+	 */
+	cfg_data = ioremap(port->cfg_space.start +
+				 (hose->first_busno + 1) * 0x100000,
+				 busses * 0x100000);
+	mbase = ioremap(port->cfg_space.start + 0x10000000, 0x1000);
+	if (cfg_data == NULL || mbase == NULL) {
+		printk(KERN_ERR "%s: Can't map config space !",
+		       port->node->full_name);
+		goto fail;
+	}
+
+	hose->cfg_data = cfg_data;
+	hose->cfg_addr = mbase;
+
+	pr_debug("PCIE %s, bus %d..%d\n", port->node->full_name,
+		 hose->first_busno, hose->last_busno);
+	pr_debug("     config space mapped at: root @0x%p, other @0x%p\n",
+		 hose->cfg_addr, hose->cfg_data);
+
+	/* Setup config space */
+	hose->ops = &ppc4xx_pciex_pci_ops;
+	port->hose = hose;
+	mbase = (void __iomem *)hose->cfg_addr;
+
+	/*
+	 * Set bus numbers on our root port
+	 */
+	out_8(mbase + PCI_PRIMARY_BUS, hose->first_busno);
+	out_8(mbase + PCI_SECONDARY_BUS, hose->first_busno + 1);
+	out_8(mbase + PCI_SUBORDINATE_BUS, hose->last_busno);
+
+	/*
+	 * OMRs are already reset, also disable PIMs
+	 */
+	out_le32(mbase + PECFG_PIMEN, 0);
+
+	/* Parse outbound mapping resources */
+	pci_process_bridge_OF_ranges(hose, port->node, primary);
+
+	/* Parse inbound mapping resources */
+	if (ppc4xx_parse_dma_ranges(hose, mbase, &dma_window) != 0)
+		goto fail;
+
+	/* Configure outbound ranges POMs */
+	ppc4xx_configure_pciex_POMs(port, hose, mbase);
+
+	/* Configure inbound ranges PIMs */
+	ppc4xx_configure_pciex_PIMs(port, hose, mbase, &dma_window);
+
+	/* The root complex doesn't show up if we don't set some vendor
+	 * and device IDs into it. Those are the same bogus one that the
+	 * initial code in arch/ppc add. We might want to change that.
+	 */
+	out_le16(mbase + 0x200, 0xaaa0 + port->index);
+	out_le16(mbase + 0x202, 0xbed0 + port->index);
+
+	/* Set Class Code to PCI-PCI bridge and Revision Id to 1 */
+	out_le32(mbase + 0x208, 0x06040001);
+
+	printk(KERN_INFO "PCIE%d: successfully set as root-complex\n",
+	       port->index);
+	return;
+ fail:
+	if (hose)
+		pcibios_free_controller(hose);
+	if (cfg_data)
+		iounmap(cfg_data);
+	if (mbase)
+		iounmap(mbase);
+}
+
 static void __init ppc4xx_probe_pciex_bridge(struct device_node *np)
 {
-	/* NYI */
+	struct ppc4xx_pciex_port *port;
+	const u32 *pval;
+	int portno;
+	unsigned int dcrs;
+
+	/* First, proceed to core initialization as we assume there's
+	 * only one PCIe core in the system
+	 */
+	if (ppc4xx_pciex_check_core_init(np))
+		return;
+
+	/* Get the port number from the device-tree */
+	pval = of_get_property(np, "port", NULL);
+	if (pval == NULL) {
+		printk(KERN_ERR "PCIE: Can't find port number for %s\n",
+		       np->full_name);
+		return;
+	}
+	portno = *pval;
+	if (portno >= ppc4xx_pciex_port_count) {
+		printk(KERN_ERR "PCIE: port number out of range for %s\n",
+		       np->full_name);
+		return;
+	}
+	port = &ppc4xx_pciex_ports[portno];
+	port->index = portno;
+	port->node = of_node_get(np);
+	pval = of_get_property(np, "sdr-base", NULL);
+	if (pval == NULL) {
+		printk(KERN_ERR "PCIE: missing sdr-base for %s\n",
+		       np->full_name);
+		return;
+	}
+	port->sdr_base = *pval;
+
+	/* Fetch config space registers address */
+	if (of_address_to_resource(np, 0, &port->cfg_space)) {
+		printk(KERN_ERR "%s: Can't get PCI-E config space !",
+		       np->full_name);
+		return;
+	}
+	/* Fetch host bridge internal registers address */
+	if (of_address_to_resource(np, 1, &port->utl_regs)) {
+		printk(KERN_ERR "%s: Can't get UTL register base !",
+		       np->full_name);
+		return;
+	}
+
+	/* Map DCRs */
+	dcrs = dcr_resource_start(np, 0);
+	if (dcrs == 0) {
+		printk(KERN_ERR "%s: Can't get DCR register base !",
+		       np->full_name);
+		return;
+	}
+	port->dcrs = dcr_map(np, dcrs, dcr_resource_len(np, 0));
+
+	/* Initialize the port specific registers */
+	if (ppc4xx_pciex_port_init(port))
+		return;
+
+	/* Setup the linux hose data structure */
+	ppc4xx_pciex_port_setup_hose(port);
 }
 
+#endif /* CONFIG_PPC4xx_PCI_EXPRESS */
+
 static int __init ppc4xx_pci_find_bridges(void)
 {
 	struct device_node *np;
 
+#ifdef CONFIG_PPC4xx_PCI_EXPRESS
 	for_each_compatible_node(np, NULL, "ibm,plb-pciex")
 		ppc4xx_probe_pciex_bridge(np);
+#endif
 	for_each_compatible_node(np, NULL, "ibm,plb-pcix")
 		ppc4xx_probe_pcix_bridge(np);
 	for_each_compatible_node(np, NULL, "ibm,plb-pci")
Index: linux-work/arch/powerpc/sysdev/ppc4xx_pci.h
===================================================================
--- linux-work.orig/arch/powerpc/sysdev/ppc4xx_pci.h	2007-12-05 11:10:44.000000000 +1100
+++ linux-work/arch/powerpc/sysdev/ppc4xx_pci.h	2007-12-05 11:56:20.000000000 +1100
@@ -121,5 +121,247 @@
 #define PCIL0_PTM2MS		0x38
 #define PCIL0_PTM2LA		0x3c
 
+/*
+ * 4xx PCIe bridge register definitions
+ */
+
+/* DCR offsets */
+#define DCRO_PEGPL_CFGBAH		0x00
+#define DCRO_PEGPL_CFGBAL		0x01
+#define DCRO_PEGPL_CFGMSK		0x02
+#define DCRO_PEGPL_MSGBAH		0x03
+#define DCRO_PEGPL_MSGBAL		0x04
+#define DCRO_PEGPL_MSGMSK		0x05
+#define DCRO_PEGPL_OMR1BAH		0x06
+#define DCRO_PEGPL_OMR1BAL		0x07
+#define DCRO_PEGPL_OMR1MSKH		0x08
+#define DCRO_PEGPL_OMR1MSKL		0x09
+#define DCRO_PEGPL_OMR2BAH		0x0a
+#define DCRO_PEGPL_OMR2BAL		0x0b
+#define DCRO_PEGPL_OMR2MSKH		0x0c
+#define DCRO_PEGPL_OMR2MSKL		0x0d
+#define DCRO_PEGPL_OMR3BAH		0x0e
+#define DCRO_PEGPL_OMR3BAL		0x0f
+#define DCRO_PEGPL_OMR3MSKH		0x10
+#define DCRO_PEGPL_OMR3MSKL		0x11
+#define DCRO_PEGPL_REGBAH		0x12
+#define DCRO_PEGPL_REGBAL		0x13
+#define DCRO_PEGPL_REGMSK		0x14
+#define DCRO_PEGPL_SPECIAL		0x15
+#define DCRO_PEGPL_CFG			0x16
+#define DCRO_PEGPL_ESR			0x17
+#define DCRO_PEGPL_EARH			0x18
+#define DCRO_PEGPL_EARL			0x19
+#define DCRO_PEGPL_EATR			0x1a
+
+/* DMER mask */
+#define GPL_DMER_MASK_DISA	0x02000000
+
+/*
+ * System DCRs (SDRs)
+ */
+#define PESDR0_PLLLCT1			0x03a0
+#define PESDR0_PLLLCT2			0x03a1
+#define PESDR0_PLLLCT3			0x03a2
+
+/*
+ * 440SPe additional DCRs
+ */
+#define PESDR0_440SPE_UTLSET1		0x0300
+#define PESDR0_440SPE_UTLSET2		0x0301
+#define PESDR0_440SPE_DLPSET		0x0302
+#define PESDR0_440SPE_LOOP		0x0303
+#define PESDR0_440SPE_RCSSET		0x0304
+#define PESDR0_440SPE_RCSSTS		0x0305
+#define PESDR0_440SPE_HSSL0SET1		0x0306
+#define PESDR0_440SPE_HSSL0SET2		0x0307
+#define PESDR0_440SPE_HSSL0STS		0x0308
+#define PESDR0_440SPE_HSSL1SET1		0x0309
+#define PESDR0_440SPE_HSSL1SET2		0x030a
+#define PESDR0_440SPE_HSSL1STS		0x030b
+#define PESDR0_440SPE_HSSL2SET1		0x030c
+#define PESDR0_440SPE_HSSL2SET2		0x030d
+#define PESDR0_440SPE_HSSL2STS		0x030e
+#define PESDR0_440SPE_HSSL3SET1		0x030f
+#define PESDR0_440SPE_HSSL3SET2		0x0310
+#define PESDR0_440SPE_HSSL3STS		0x0311
+#define PESDR0_440SPE_HSSL4SET1		0x0312
+#define PESDR0_440SPE_HSSL4SET2		0x0313
+#define PESDR0_440SPE_HSSL4STS	       	0x0314
+#define PESDR0_440SPE_HSSL5SET1		0x0315
+#define PESDR0_440SPE_HSSL5SET2		0x0316
+#define PESDR0_440SPE_HSSL5STS		0x0317
+#define PESDR0_440SPE_HSSL6SET1		0x0318
+#define PESDR0_440SPE_HSSL6SET2		0x0319
+#define PESDR0_440SPE_HSSL6STS		0x031a
+#define PESDR0_440SPE_HSSL7SET1		0x031b
+#define PESDR0_440SPE_HSSL7SET2		0x031c
+#define PESDR0_440SPE_HSSL7STS		0x031d
+#define PESDR0_440SPE_HSSCTLSET		0x031e
+#define PESDR0_440SPE_LANE_ABCD		0x031f
+#define PESDR0_440SPE_LANE_EFGH		0x0320
+
+#define PESDR1_440SPE_UTLSET1		0x0340
+#define PESDR1_440SPE_UTLSET2		0x0341
+#define PESDR1_440SPE_DLPSET		0x0342
+#define PESDR1_440SPE_LOOP		0x0343
+#define PESDR1_440SPE_RCSSET		0x0344
+#define PESDR1_440SPE_RCSSTS		0x0345
+#define PESDR1_440SPE_HSSL0SET1		0x0346
+#define PESDR1_440SPE_HSSL0SET2		0x0347
+#define PESDR1_440SPE_HSSL0STS		0x0348
+#define PESDR1_440SPE_HSSL1SET1		0x0349
+#define PESDR1_440SPE_HSSL1SET2		0x034a
+#define PESDR1_440SPE_HSSL1STS		0x034b
+#define PESDR1_440SPE_HSSL2SET1		0x034c
+#define PESDR1_440SPE_HSSL2SET2		0x034d
+#define PESDR1_440SPE_HSSL2STS		0x034e
+#define PESDR1_440SPE_HSSL3SET1		0x034f
+#define PESDR1_440SPE_HSSL3SET2		0x0350
+#define PESDR1_440SPE_HSSL3STS		0x0351
+#define PESDR1_440SPE_HSSCTLSET		0x0352
+#define PESDR1_440SPE_LANE_ABCD		0x0353
+
+#define PESDR2_440SPE_UTLSET1		0x0370
+#define PESDR2_440SPE_UTLSET2		0x0371
+#define PESDR2_440SPE_DLPSET		0x0372
+#define PESDR2_440SPE_LOOP		0x0373
+#define PESDR2_440SPE_RCSSET		0x0374
+#define PESDR2_440SPE_RCSSTS		0x0375
+#define PESDR2_440SPE_HSSL0SET1		0x0376
+#define PESDR2_440SPE_HSSL0SET2		0x0377
+#define PESDR2_440SPE_HSSL0STS		0x0378
+#define PESDR2_440SPE_HSSL1SET1		0x0379
+#define PESDR2_440SPE_HSSL1SET2		0x037a
+#define PESDR2_440SPE_HSSL1STS		0x037b
+#define PESDR2_440SPE_HSSL2SET1		0x037c
+#define PESDR2_440SPE_HSSL2SET2		0x037d
+#define PESDR2_440SPE_HSSL2STS		0x037e
+#define PESDR2_440SPE_HSSL3SET1		0x037f
+#define PESDR2_440SPE_HSSL3SET2		0x0380
+#define PESDR2_440SPE_HSSL3STS		0x0381
+#define PESDR2_440SPE_HSSCTLSET		0x0382
+#define PESDR2_440SPE_LANE_ABCD		0x0383
+
+/*
+ * 405EX additional DCRs
+ */
+#define PESDR0_405EX_UTLSET1		0x0400
+#define PESDR0_405EX_UTLSET2		0x0401
+#define PESDR0_405EX_DLPSET		0x0402
+#define PESDR0_405EX_LOOP		0x0403
+#define PESDR0_405EX_RCSSET		0x0404
+#define PESDR0_405EX_RCSSTS		0x0405
+#define PESDR0_405EX_PHYSET1		0x0406
+#define PESDR0_405EX_PHYSET2		0x0407
+#define PESDR0_405EX_BIST		0x0408
+#define PESDR0_405EX_LPB		0x040B
+#define PESDR0_405EX_PHYSTA		0x040C
+
+#define PESDR1_405EX_UTLSET1		0x0440
+#define PESDR1_405EX_UTLSET2		0x0441
+#define PESDR1_405EX_DLPSET		0x0442
+#define PESDR1_405EX_LOOP		0x0443
+#define PESDR1_405EX_RCSSET		0x0444
+#define PESDR1_405EX_RCSSTS		0x0445
+#define PESDR1_405EX_PHYSET1		0x0446
+#define PESDR1_405EX_PHYSET2		0x0447
+#define PESDR1_405EX_BIST		0x0448
+#define PESDR1_405EX_LPB		0x044B
+#define PESDR1_405EX_PHYSTA		0x044C
+
+/*
+ * Of the above, some are common offsets from the base
+ */
+#define PESDRn_UTLSET1			0x00
+#define PESDRn_UTLSET2			0x01
+#define PESDRn_DLPSET			0x02
+#define PESDRn_LOOP			0x03
+#define PESDRn_RCSSET			0x04
+#define PESDRn_RCSSTS			0x05
+
+/* 440spe only */
+#define PESDRn_440SPE_HSSL0SET1		0x06
+#define PESDRn_440SPE_HSSL0SET2		0x07
+#define PESDRn_440SPE_HSSL0STS		0x08
+#define PESDRn_440SPE_HSSL1SET1		0x09
+#define PESDRn_440SPE_HSSL1SET2		0x0a
+#define PESDRn_440SPE_HSSL1STS		0x0b
+#define PESDRn_440SPE_HSSL2SET1		0x0c
+#define PESDRn_440SPE_HSSL2SET2		0x0d
+#define PESDRn_440SPE_HSSL2STS		0x0e
+#define PESDRn_440SPE_HSSL3SET1		0x0f
+#define PESDRn_440SPE_HSSL3SET2		0x10
+#define PESDRn_440SPE_HSSL3STS		0x11
+
+/* 440spe port 0 only */
+#define PESDRn_440SPE_HSSL4SET1		0x12
+#define PESDRn_440SPE_HSSL4SET2		0x13
+#define PESDRn_440SPE_HSSL4STS	       	0x14
+#define PESDRn_440SPE_HSSL5SET1		0x15
+#define PESDRn_440SPE_HSSL5SET2		0x16
+#define PESDRn_440SPE_HSSL5STS		0x17
+#define PESDRn_440SPE_HSSL6SET1		0x18
+#define PESDRn_440SPE_HSSL6SET2		0x19
+#define PESDRn_440SPE_HSSL6STS		0x1a
+#define PESDRn_440SPE_HSSL7SET1		0x1b
+#define PESDRn_440SPE_HSSL7SET2		0x1c
+#define PESDRn_440SPE_HSSL7STS		0x1d
+
+/* 405ex only */
+#define PESDRn_405EX_PHYSET1		0x06
+#define PESDRn_405EX_PHYSET2		0x07
+#define PESDRn_405EX_PHYSTA		0x0c
+
+/*
+ * UTL register offsets
+ */
+#define PEUTL_PBCTL		0x00
+#define PEUTL_PBBSZ		0x20
+#define PEUTL_OPDBSZ		0x68
+#define PEUTL_IPHBSZ		0x70
+#define PEUTL_IPDBSZ		0x78
+#define PEUTL_OUTTR		0x90
+#define PEUTL_INTR		0x98
+#define PEUTL_PCTL		0xa0
+#define PEUTL_RCSTA		0xB0
+#define PEUTL_RCIRQEN		0xb8
+
+/*
+ * Config space register offsets
+ */
+#define PECFG_BAR0LMPA		0x210
+#define PECFG_BAR0HMPA		0x214
+#define PECFG_BAR1MPA		0x218
+#define PECFG_BAR2LMPA		0x220
+#define PECFG_BAR2HMPA		0x224
+
+#define PECFG_PIMEN		0x33c
+#define PECFG_PIM0LAL		0x340
+#define PECFG_PIM0LAH		0x344
+#define PECFG_PIM1LAL		0x348
+#define PECFG_PIM1LAH		0x34c
+#define PECFG_PIM01SAL		0x350
+#define PECFG_PIM01SAH		0x354
+
+#define PECFG_POM0LAL		0x380
+#define PECFG_POM0LAH		0x384
+#define PECFG_POM1LAL		0x388
+#define PECFG_POM1LAH		0x38c
+#define PECFG_POM2LAL		0x390
+#define PECFG_POM2LAH		0x394
+
+
+enum
+{
+	PTYPE_ENDPOINT		= 0x0,
+	PTYPE_LEGACY_ENDPOINT	= 0x1,
+	PTYPE_ROOT_PORT		= 0x4,
+
+	LNKW_X1			= 0x1,
+	LNKW_X4			= 0x4,
+	LNKW_X8			= 0x8
+};
+
 
 #endif /* __PPC4XX_PCI_H__ */
Index: linux-work/arch/powerpc/Kconfig
===================================================================
--- linux-work.orig/arch/powerpc/Kconfig	2007-12-05 11:09:41.000000000 +1100
+++ linux-work/arch/powerpc/Kconfig	2007-12-05 11:10:44.000000000 +1100
@@ -178,6 +178,7 @@ config PPC_OF_PLATFORM_PCI
 
 source "init/Kconfig"
 
+source "arch/powerpc/sysdev/Kconfig"
 source "arch/powerpc/platforms/Kconfig"
 
 menu "Kernel options"
Index: linux-work/arch/powerpc/sysdev/Kconfig
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/sysdev/Kconfig	2007-12-05 11:10:44.000000000 +1100
@@ -0,0 +1,8 @@
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+#
+
+config PPC4xx_PCI_EXPRESS
+	bool
+	depends on PCI && 4xx
+	default n

Re: [PATCH 11/25] powerpc: 4xx PLB to PCI Express support

[Stefan Roese]

On Thursday 06 December 2007, Benjamin Herrenschmidt wrote:
> This adds to the previous 2 patches the support for the 4xx PCI Express
> cells as found in the 440SPe revA, revB and 405EX.
>
> Unfortunately, due to significant differences between these, and other
> interesting "features" of those pieces of HW, the code isn't as simple
> as it is for PCI and PCI-X and some of the functions differ significantly
> between the 3 implementations. Thus, not only this code can only support
> those 3 implementations for now and will refuse to operate on any other,
> but there are added ifdef's to avoid the bloat of building a fairly large
> amount of code on platforms that don't need it.
>
> Also, this code currently only supports fully initializing root complex
> nodes, not endpoint. Some more code will have to be lifted from the
> arch/ppc implementation to add the endpoint support, though it's mostly
> differences in memory mapping, and the question on how to represent
> endpoint mode PCI in the device-tree is thus open.
>
> Many thanks to Stefan Roese for testing & fixing up the 405EX bits !

You're welcome. Thank you for doing the "dirty work".

Please find some comments below.

<snip>

> +/* Check that the core has been initied and if not, do it */
> +static int __init ppc4xx_pciex_check_core_init(struct device_node *np)
> +{
> +	static int core_init;
> +	int count = -ENODEV;
> +
> +	if (core_init++)
> +		return 0;
> +
> +#ifdef CONFIG_44x
> +	if (of_device_is_compatible(np, "ibm,plb-pciex-440speA"))
> +		ppc4xx_pciex_hwops = &ppc440speA_pcie_hwops;
> +	else if (of_device_is_compatible(np, "ibm,plb-pciex-440speB"))
> +		ppc4xx_pciex_hwops = &ppc440speB_pcie_hwops;

We need some runtime detection of the 440SPe revision here. There are boards 
out there (e.g. AMCC Yucca) which can be equipped with both PPC 
revisions. :-(

> +#endif /* CONFIG_44x    */
> +#ifdef CONFIG_40x
> +	if (of_device_is_compatible(np, "ibm,plb-pciex-405ex"))
> +		ppc4xx_pciex_hwops = &ppc405ex_pcie_hwops;
> +#endif

Why those #ifdef's? Just code-size reasons, since 40x and 44x will most likely 
never be built into one image? 

Thanks.

Best regards,
Stefan

Re: [PATCH 11/25] powerpc: 4xx PLB to PCI Express support

[Benjamin Herrenschmidt]

> > +/* Check that the core has been initied and if not, do it */
> > +static int __init ppc4xx_pciex_check_core_init(struct device_node *np)
> > +{
> > +	static int core_init;
> > +	int count = -ENODEV;
> > +
> > +	if (core_init++)
> > +		return 0;
> > +
> > +#ifdef CONFIG_44x
> > +	if (of_device_is_compatible(np, "ibm,plb-pciex-440speA"))
> > +		ppc4xx_pciex_hwops = &ppc440speA_pcie_hwops;
> > +	else if (of_device_is_compatible(np, "ibm,plb-pciex-440speB"))
> > +		ppc4xx_pciex_hwops = &ppc440speB_pcie_hwops;
> 
> We need some runtime detection of the 440SPe revision here. There are boards 
> out there (e.g. AMCC Yucca) which can be equipped with both PPC 
> revisions. :-(

Ah... crap ! Do you think we should put that in the boot wrapper and
fixup the device-tree or should we put it in the PCIe code proper ?

> > +#endif /* CONFIG_44x    */
> > +#ifdef CONFIG_40x
> > +	if (of_device_is_compatible(np, "ibm,plb-pciex-405ex"))
> > +		ppc4xx_pciex_hwops = &ppc405ex_pcie_hwops;
> > +#endif
> 
> Why those #ifdef's? Just code-size reasons, since 40x and 44x will most likely 
> never be built into one image? 

Code size... I know how keen embedded people are to keep their kernel
small and as of today, you can't build 40x and 44x support in the same
image, so I didn't want to be blamed for adding bloat in that case :-)

Ben.

Re: [PATCH 11/25] powerpc: 4xx PLB to PCI Express support

[Stefan Roese]

On Thursday 06 December 2007, Benjamin Herrenschmidt wrote:
> > > +/* Check that the core has been initied and if not, do it */
> > > +static int __init ppc4xx_pciex_check_core_init(struct device_node *np)
> > > +{
> > > +	static int core_init;
> > > +	int count = -ENODEV;
> > > +
> > > +	if (core_init++)
> > > +		return 0;
> > > +
> > > +#ifdef CONFIG_44x
> > > +	if (of_device_is_compatible(np, "ibm,plb-pciex-440speA"))
> > > +		ppc4xx_pciex_hwops = &ppc440speA_pcie_hwops;
> > > +	else if (of_device_is_compatible(np, "ibm,plb-pciex-440speB"))
> > > +		ppc4xx_pciex_hwops = &ppc440speB_pcie_hwops;
> >
> > We need some runtime detection of the 440SPe revision here. There are
> > boards out there (e.g. AMCC Yucca) which can be equipped with both PPC
> > revisions. :-(
>
> Ah... crap ! Do you think we should put that in the boot wrapper and
> fixup the device-tree or should we put it in the PCIe code proper ?

How about this: We change the compatible node to "plb-pciex-440spe" 
(without "A" and "B) and make a PVR runtime detection in the 4xx-pci driver.

What do you think? Should I prepare a patch for this?

> > > +#endif /* CONFIG_44x    */
> > > +#ifdef CONFIG_40x
> > > +	if (of_device_is_compatible(np, "ibm,plb-pciex-405ex"))
> > > +		ppc4xx_pciex_hwops = &ppc405ex_pcie_hwops;
> > > +#endif
> >
> > Why those #ifdef's? Just code-size reasons, since 40x and 44x will most
> > likely never be built into one image?
>
> Code size... I know how keen embedded people are to keep their kernel
> small and as of today, you can't build 40x and 44x support in the same
> image, so I didn't want to be blamed for adding bloat in that case :-)

Ok. Thanks.

Best regards,
Stefan

Re: [PATCH 11/25] powerpc: 4xx PLB to PCI Express support

[Benjamin Herrenschmidt]

On Fri, 2007-12-07 at 08:02 +0100, Stefan Roese wrote:
> 
> > Ah... crap ! Do you think we should put that in the boot wrapper and
> > fixup the device-tree or should we put it in the PCIe code proper ?
> 
> How about this: We change the compatible node to "plb-pciex-440spe" 
> (without "A" and "B) and make a PVR runtime detection in the 4xx-pci
> driver.
> 
> What do you think? Should I prepare a patch for this?

I suppose that's the best way though we should do the detection the
other way around form the old code, that is detect rev A explicitely and
consider everything else rev B (just in case some new rev ever
appears..)

Yes, I would appreciate a patch, thanks.

Ben.

[PATCH 12/25] powerpc: PCI support for 4xx Ebony board

[Benjamin Herrenschmidt]

This wires up the 4xx PCI support & device tree bits for
440GP based Ebony platform.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/boot/dts/ebony.dts |   41 +++++++++++++++++++++++++++++++++++-----
 1 file changed, 36 insertions(+), 5 deletions(-)

Index: linux-work/arch/powerpc/boot/dts/ebony.dts
===================================================================
--- linux-work.orig/arch/powerpc/boot/dts/ebony.dts	2007-10-15 11:19:35.000000000 +1000
+++ linux-work/arch/powerpc/boot/dts/ebony.dts	2007-11-27 18:27:37.000000000 +1100
@@ -284,12 +284,43 @@
 
 		};
 
-		PCIX0: pci@1234 {
+		PCIX0: pci@20ec00000 {
 			device_type = "pci";
-			/* FIXME */
-			reg = <2 0ec00000 8
-			       2 0ec80000 f0
-			       2 0ec80100 fc>;
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb440gp-pcix", "ibm,plb-pcix";
+			primary;
+			reg = <2 0ec00000 8	/* Config space access */
+			       0 0 0		/* no IACK cycles */
+			       2 0ed00000 4     /* Special cycles */
+			       2 0ec80000 f0	/* Internal registers */
+			       2 0ec80100 fc>;	/* Internal messaging registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed
+			 */
+			ranges = <02000000 0 80000000 00000003 80000000 0 80000000
+				  01000000 0 00000000 00000002 08000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 0 80000000>;
+
+			/* Ebony has all 4 IRQ pins tied together per slot */
+			interrupt-map-mask = <f800 0 0 0>;
+			interrupt-map = <
+				/* IDSEL 1 */
+				0800 0 0 0 &UIC0 17 8
+
+				/* IDSEL 2 */
+				1000 0 0 0 &UIC0 18 8
+
+				/* IDSEL 3 */
+				1800 0 0 0 &UIC0 19 8
+
+				/* IDSEL 4 */
+				2000 0 0 0 &UIC0 1a 8
+			>;
 		};
 	};
 

[PATCH 13/25] powerpc: Remove useless volatiles in udbg_16550.c

[Benjamin Herrenschmidt]

This removes "volatile" from the MMIO pointer udbg_comport
in udbg_16550.c driver, it's useless and makes checkpatch.pl
complain when adding things to this file.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/kernel/udbg_16550.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Index: linux-work/arch/powerpc/kernel/udbg_16550.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/udbg_16550.c	2007-12-03 12:54:04.000000000 +1100
+++ linux-work/arch/powerpc/kernel/udbg_16550.c	2007-12-03 12:56:07.000000000 +1100
@@ -46,7 +46,7 @@ struct NS16550 {
 
 #define LCR_DLAB 0x80
 
-static volatile struct NS16550 __iomem *udbg_comport;
+static struct NS16550 __iomem *udbg_comport;
 
 static void udbg_550_putc(char c)
 {
@@ -117,7 +117,7 @@ unsigned int udbg_probe_uart_speed(void 
 {
 	unsigned int dll, dlm, divisor, prescaler, speed;
 	u8 old_lcr;
-	volatile struct NS16550 __iomem *port = comport;
+	struct NS16550 __iomem *port = comport;
 
 	old_lcr = in_8(&port->lcr);
 
@@ -162,7 +162,7 @@ void udbg_maple_real_putc(char c)
 
 void __init udbg_init_maple_realmode(void)
 {
-	udbg_comport = (volatile struct NS16550 __iomem *)0xf40003f8;
+	udbg_comport = (struct NS16550 __iomem *)0xf40003f8;
 
 	udbg_putc = udbg_maple_real_putc;
 	udbg_getc = NULL;
@@ -184,7 +184,7 @@ void udbg_pas_real_putc(char c)
 
 void udbg_init_pas_realmode(void)
 {
-	udbg_comport = (volatile struct NS16550 __iomem *)0xfcff03f8UL;
+	udbg_comport = (struct NS16550 __iomem *)0xfcff03f8UL;
 
 	udbg_putc = udbg_pas_real_putc;
 	udbg_getc = NULL;
@@ -219,7 +219,7 @@ static int udbg_44x_as1_getc(void)
 void __init udbg_init_44x_as1(void)
 {
 	udbg_comport =
-		(volatile struct NS16550 __iomem *)PPC44x_EARLY_DEBUG_VIRTADDR;
+		(struct NS16550 __iomem *)PPC44x_EARLY_DEBUG_VIRTADDR;
 
 	udbg_putc = udbg_44x_as1_putc;
 	udbg_getc = udbg_44x_as1_getc;

[PATCH 14/25] powerpc: Add early udbg support for 40x processors

[Benjamin Herrenschmidt]

This adds some basic real mode based early udbg support for 40x
in order to debug things more easily

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/Kconfig.debug             |   13 +++++++++++
 arch/powerpc/kernel/misc_32.S          |   39 +++++++++++++++++++++++++++++++++
 arch/powerpc/kernel/udbg.c             |    3 ++
 arch/powerpc/kernel/udbg_16550.c       |   33 +++++++++++++++++++++++++++
 arch/powerpc/platforms/Kconfig.cputype |    1 
 include/asm-powerpc/udbg.h             |    1 
 6 files changed, 90 insertions(+)

Index: linux-work/arch/powerpc/Kconfig.debug
===================================================================
--- linux-work.orig/arch/powerpc/Kconfig.debug	2007-12-03 12:56:07.000000000 +1100
+++ linux-work/arch/powerpc/Kconfig.debug	2007-12-03 12:56:19.000000000 +1100
@@ -220,6 +220,14 @@ config PPC_EARLY_DEBUG_44x
 	  Select this to enable early debugging for IBM 44x chips via the
 	  inbuilt serial port.
 
+config PPC_EARLY_DEBUG_40x
+	bool "Early serial debugging for IBM/AMCC 40x CPUs"
+	depends on 40x
+	help
+	  Select this to enable early debugging for IBM 40x chips via the
+	  inbuilt serial port. This works on chips with a 16550 compatible
+	  UART. Xilinx chips with uartlite cannot use this option.
+
 config PPC_EARLY_DEBUG_CPM
 	bool "Early serial debugging for Freescale CPM-based serial ports"
 	depends on SERIAL_CPM
@@ -241,6 +249,11 @@ config PPC_EARLY_DEBUG_44x_PHYSHIGH
 	depends on PPC_EARLY_DEBUG_44x
 	default "0x1"
 
+config PPC_EARLY_DEBUG_40x_PHYSADDR
+	hex "Early debug UART physical address"
+	depends on PPC_EARLY_DEBUG_40x
+	default "0xef600300"
+
 config PPC_EARLY_DEBUG_CPM_ADDR
 	hex "CPM UART early debug transmit descriptor address"
 	depends on PPC_EARLY_DEBUG_CPM
Index: linux-work/arch/powerpc/kernel/misc_32.S
===================================================================
--- linux-work.orig/arch/powerpc/kernel/misc_32.S	2007-12-03 12:56:07.000000000 +1100
+++ linux-work/arch/powerpc/kernel/misc_32.S	2007-12-03 12:56:19.000000000 +1100
@@ -206,6 +206,45 @@ _GLOBAL(_nmask_and_or_msr)
 	isync
 	blr			/* Done */
 
+#ifdef CONFIG_40x
+
+/*
+ * Do an IO access in real mode
+ */
+_GLOBAL(real_readb)
+	mfmsr	r7
+	ori	r0,r7,MSR_DR
+	xori	r0,r0,MSR_DR
+	sync
+	mtmsr	r0
+	sync
+	isync
+	lbz	r3,0(r3)
+	sync
+	mtmsr	r7
+	sync
+	isync
+	blr
+
+	/*
+ * Do an IO access in real mode
+ */
+_GLOBAL(real_writeb)
+	mfmsr	r7
+	ori	r0,r7,MSR_DR
+	xori	r0,r0,MSR_DR
+	sync
+	mtmsr	r0
+	sync
+	isync
+	stb	r3,0(r4)
+	sync
+	mtmsr	r7
+	sync
+	isync
+	blr
+
+#endif /* CONFIG_40x */
 
 /*
  * Flush MMU TLB
Index: linux-work/arch/powerpc/kernel/udbg.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/udbg.c	2007-12-03 12:56:07.000000000 +1100
+++ linux-work/arch/powerpc/kernel/udbg.c	2007-12-03 12:56:19.000000000 +1100
@@ -54,6 +54,9 @@ void __init udbg_early_init(void)
 #elif defined(CONFIG_PPC_EARLY_DEBUG_44x)
 	/* PPC44x debug */
 	udbg_init_44x_as1();
+#elif defined(CONFIG_PPC_EARLY_DEBUG_40x)
+	/* PPC40x debug */
+	udbg_init_40x_realmode();
 #elif defined(CONFIG_PPC_EARLY_DEBUG_CPM)
 	udbg_init_cpm();
 #endif
Index: linux-work/arch/powerpc/kernel/udbg_16550.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/udbg_16550.c	2007-12-03 12:56:07.000000000 +1100
+++ linux-work/arch/powerpc/kernel/udbg_16550.c	2007-12-03 12:56:34.000000000 +1100
@@ -225,3 +225,36 @@ void __init udbg_init_44x_as1(void)
 	udbg_getc = udbg_44x_as1_getc;
 }
 #endif /* CONFIG_PPC_EARLY_DEBUG_44x */
+
+#ifdef CONFIG_PPC_EARLY_DEBUG_40x
+static void udbg_40x_real_putc(char c)
+{
+	if (udbg_comport) {
+		while ((real_readb(&udbg_comport->lsr) & LSR_THRE) == 0)
+			/* wait for idle */;
+		real_writeb(c, &udbg_comport->thr); eieio();
+		if (c == '\n')
+			udbg_40x_real_putc('\r');
+	}
+}
+
+static int udbg_40x_real_getc(void)
+{
+	if (udbg_comport) {
+		while ((real_readb(&udbg_comport->lsr) & LSR_DR) == 0)
+			; /* wait for char */
+		return real_readb(&udbg_comport->rbr);
+	}
+	return -1;
+}
+
+void __init udbg_init_40x_realmode(void)
+{
+	udbg_comport = (struct NS16550 __iomem *)
+		CONFIG_PPC_EARLY_DEBUG_40x_PHYSADDR;
+
+	udbg_putc = udbg_40x_real_putc;
+	udbg_getc = udbg_40x_real_getc;
+	udbg_getc_poll = NULL;
+}
+#endif /* CONFIG_PPC_EARLY_DEBUG_40x */
Index: linux-work/include/asm-powerpc/udbg.h
===================================================================
--- linux-work.orig/include/asm-powerpc/udbg.h	2007-12-03 12:56:07.000000000 +1100
+++ linux-work/include/asm-powerpc/udbg.h	2007-12-03 12:56:19.000000000 +1100
@@ -48,6 +48,7 @@ extern void __init udbg_init_rtas_consol
 extern void __init udbg_init_debug_beat(void);
 extern void __init udbg_init_btext(void);
 extern void __init udbg_init_44x_as1(void);
+extern void __init udbg_init_40x_realmode(void);
 extern void __init udbg_init_cpm(void);
 
 #endif /* __KERNEL__ */
Index: linux-work/arch/powerpc/platforms/Kconfig.cputype
===================================================================
--- linux-work.orig/arch/powerpc/platforms/Kconfig.cputype	2007-12-03 12:56:07.000000000 +1100
+++ linux-work/arch/powerpc/platforms/Kconfig.cputype	2007-12-03 12:56:19.000000000 +1100
@@ -43,6 +43,7 @@ config 40x
 	bool "AMCC 40x"
 	select PPC_DCR_NATIVE
 	select WANT_DEVICE_TREE
+	select PPC_UDBG_16550
 
 config 44x
 	bool "AMCC 44x"

[PATCH 15/25] powerpc: early debug forces console log level to max

[Benjamin Herrenschmidt]

This patch makes the early debug option force the console loglevel
to the max. The early debug option is meant to catch messages very
early in the kernel boot process, in many cases, before the kernel
has a chance to parse the "debug" command line argument. Thus it
makes sense when CONFIG_PPC_EARLY_DEBUG is set, to force the console
log level to the max at boot time.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/Kconfig.debug |    7 +++++++
 arch/powerpc/kernel/udbg.c |    4 ++++
 2 files changed, 11 insertions(+)

Index: linux-work/arch/powerpc/kernel/udbg.c
===================================================================
--- linux-work.orig/arch/powerpc/kernel/udbg.c	2007-12-03 12:56:19.000000000 +1100
+++ linux-work/arch/powerpc/kernel/udbg.c	2007-12-03 12:56:43.000000000 +1100
@@ -60,6 +60,10 @@ void __init udbg_early_init(void)
 #elif defined(CONFIG_PPC_EARLY_DEBUG_CPM)
 	udbg_init_cpm();
 #endif
+
+#ifdef CONFIG_PPC_EARLY_DEBUG
+	console_loglevel = 10;
+#endif
 }
 
 /* udbg library, used by xmon et al */
Index: linux-work/arch/powerpc/Kconfig.debug
===================================================================
--- linux-work.orig/arch/powerpc/Kconfig.debug	2007-12-03 12:57:16.000000000 +1100
+++ linux-work/arch/powerpc/Kconfig.debug	2007-12-03 12:58:33.000000000 +1100
@@ -151,6 +151,13 @@ config BOOTX_TEXT
 
 config PPC_EARLY_DEBUG
 	bool "Early debugging (dangerous)"
+	help
+	  Say Y to enable some early debugging facilities that may be available
+	  for your processor/board combination. Those facilities are hacks
+	  intended to debug problems early during boot, this should not be
+	  enabled in a production kernel.
+	  Note that enabling this will also cause the kernel default log level
+	  to be pushed to max automatically very early during boot
 
 choice
 	prompt "Early debugging console"

[PATCH 16/25] powerpc: EP405 boards support for arch/powerpc

[Benjamin Herrenschmidt]

Brings EP405 support to arch/powerpc. The IRQ routing for the CPLD
comes from a device-tree property, PCI is working to the point where
I can see the video card, USB device, and south bridge.

This should work with both EP405 and EP405PC.

I've not totally figured out how IRQs are wired on this hardware
though, thus at this stage, expect only USB interrupts working,
pretty much the same as what arch/ppc did.

Also, the flash, nvram, rtc and temp control still have to be wired.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Note about IRQ routing: The doc is very obscure in that area.

I _think_ the SB interrupt on the CPLD is actually the Windond's
8259 output and the NB interrupt is the PCI_A...PCI_D mux in
there (which can be implemented as a cascaded controller) but
I haven't sorted that out yet. If anybody from Embedded Planet
is around, I could use some advice there.

If my deductions are correct, then we would need to wire up the
8259 driver to SB, which should be trivial provided I stick the
windbond bridge in the device-tree, or at least part of it,
and probably implement a cascaded controller for the PCI IRQ
A...D mux thingy, which should also be trivial.

Note also that it tends to lockup during the transition from
the boot wrapper to the kernel, before udbg is started. I didn't
have a RiscWatch at hand so I haven't yet been able to track that
down. It's random though, quite weird. Maybe some stale TLB entries
or cache content that isn't cleared properly...

 arch/powerpc/boot/4xx.c              |   55 +-
 arch/powerpc/boot/4xx.h              |    1 
 arch/powerpc/boot/Makefile           |    3 
 arch/powerpc/boot/dts/ep405.dts      |  221 ++++++++
 arch/powerpc/boot/ep405.c            |   74 ++
 arch/powerpc/boot/treeboot-walnut.c  |   49 -
 arch/powerpc/boot/wrapper            |    2 
 arch/powerpc/configs/ep405_defconfig |  951 +++++++++++++++++++++++++++++++++++
 arch/powerpc/platforms/40x/Kconfig   |   21 
 arch/powerpc/platforms/40x/Makefile  |    1 
 arch/powerpc/platforms/40x/ep405.c   |  125 ++++
 11 files changed, 1437 insertions(+), 66 deletions(-)

Index: linux-work/arch/powerpc/boot/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/boot/Makefile	2007-12-03 11:48:06.000000000 +1100
+++ linux-work/arch/powerpc/boot/Makefile	2007-12-03 12:58:45.000000000 +1100
@@ -56,7 +56,7 @@ src-plat := of.c cuboot-52xx.c cuboot-83
 		cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
 		ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
 		cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c \
-		fixed-head.S ep88xc.c cuboot-hpc2.c
+		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -150,6 +150,7 @@ image-$(CONFIG_DEFAULT_UIMAGE)		+= uImag
 ifneq ($(CONFIG_DEVICE_TREE),"")
 image-$(CONFIG_PPC_8xx)			+= cuImage.8xx
 image-$(CONFIG_PPC_EP88XC)		+= zImage.ep88xc
+image-$(CONFIG_EP405)			+= zImage.ep405
 image-$(CONFIG_8260)			+= cuImage.pq2
 image-$(CONFIG_PPC_MPC52xx)		+= cuImage.52xx
 image-$(CONFIG_PPC_83xx)		+= cuImage.83xx
Index: linux-work/arch/powerpc/boot/ep405.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/boot/ep405.c	2007-12-03 13:38:22.000000000 +1100
@@ -0,0 +1,74 @@
+/*
+ * Embedded Planet EP405 with PlanetCore firmware
+ *
+ * (c) Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp,\
+ *
+ * Based on ep88xc.c by
+ *
+ * Scott Wood <scottwood@freescale.com>
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "stdio.h"
+#include "planetcore.h"
+#include "dcr.h"
+#include "4xx.h"
+#include "io.h"
+
+static char *table;
+static u64 mem_size;
+
+static void platform_fixups(void)
+{
+	u64 val;
+	void *nvrtc;
+
+	dt_fixup_memory(0, mem_size);
+	planetcore_set_mac_addrs(table);
+
+	if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) {
+		printf("No PlanetCore crystal frequency key.\r\n");
+		return;
+	}
+	ibm405gp_fixup_clocks(val, 0xa8c000);
+	ibm4xx_quiesce_eth((u32 *)0xef600800, NULL);
+	ibm4xx_fixup_ebc_ranges("/plb/ebc");
+
+	if (!planetcore_get_decimal(table, PLANETCORE_KEY_KB_NVRAM, &val)) {
+		printf("No PlanetCore NVRAM size key.\r\n");
+		return;
+	}
+	nvrtc = finddevice("/plb/ebc/nvrtc@4,200000");
+	if (nvrtc != NULL) {
+		u32 reg[3] = { 4, 0x200000, 0};
+		getprop(nvrtc, "reg", reg, 3);
+		reg[2] = (val << 10) & 0xffffffff;
+		setprop(nvrtc, "reg", reg, 3);
+	}
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+		   unsigned long r6, unsigned long r7)
+{
+	table = (char *)r3;
+	planetcore_prepare_table(table);
+
+	if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size))
+		return;
+
+	mem_size *= 1024 * 1024;
+	simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64);
+
+	ft_init(_dtb_start, _dtb_end - _dtb_start, 32);
+
+	planetcore_set_stdout_path(table);
+
+	serial_console_init();
+	platform_ops.fixups = platform_fixups;
+}
Index: linux-work/arch/powerpc/boot/dts/ep405.dts
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/boot/dts/ep405.dts	2007-12-03 12:58:45.000000000 +1100
@@ -0,0 +1,221 @@
+/*
+ * Device Tree Source for EP405
+ *
+ * Copyright 2007 IBM Corp.
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	model = "ep405";
+	compatible = "ep405";
+	dcr-parent = <&/cpus/PowerPC,405GP@0>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,405GP@0 {
+			device_type = "cpu";
+			reg = <0>;
+			clock-frequency = <bebc200>; /* Filled in by zImage */
+			timebase-frequency = <0>; /* Filled in by zImage */
+			i-cache-line-size = <20>;
+			d-cache-line-size = <20>;
+			i-cache-size = <4000>;
+			d-cache-size = <4000>;
+			dcr-controller;
+			dcr-access-method = "native";
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0 0>; /* Filled in by zImage */
+	};
+
+	UIC0: interrupt-controller {
+		compatible = "ibm,uic";
+		interrupt-controller;
+		cell-index = <0>;
+		dcr-reg = <0c0 9>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+	};
+
+	plb {
+		compatible = "ibm,plb3";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+		clock-frequency = <0>; /* Filled in by zImage */
+
+		SDRAM0: memory-controller {
+			compatible = "ibm,sdram-405gp";
+			dcr-reg = <010 2>;
+		};
+
+		MAL: mcmal {
+			compatible = "ibm,mcmal-405gp", "ibm,mcmal";
+			dcr-reg = <180 62>;
+			num-tx-chans = <1>;
+			num-rx-chans = <1>;
+			interrupt-parent = <&UIC0>;
+			interrupts = <
+				b 4 /* TXEOB */
+				c 4 /* RXEOB */
+				a 4 /* SERR */
+				d 4 /* TXDE */
+				e 4 /* RXDE */>;
+		};
+
+		POB0: opb {
+			compatible = "ibm,opb-405gp", "ibm,opb";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <ef600000 ef600000 a00000>;
+			dcr-reg = <0a0 5>;
+			clock-frequency = <0>; /* Filled in by zImage */
+
+			UART0: serial@ef600300 {
+				device_type = "serial";
+				compatible = "ns16550";
+				reg = <ef600300 8>;
+				virtual-reg = <ef600300>;
+				clock-frequency = <0>; /* Filled in by zImage */
+				current-speed = <2580>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <0 4>;
+			};
+
+			UART1: serial@ef600400 {
+				device_type = "serial";
+				compatible = "ns16550";
+				reg = <ef600400 8>;
+				virtual-reg = <ef600400>;
+				clock-frequency = <0>; /* Filled in by zImage */
+				current-speed = <2580>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <1 4>;
+			};
+
+			IIC: i2c@ef600500 {
+				compatible = "ibm,iic-405gp", "ibm,iic";
+				reg = <ef600500 11>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <2 4>;
+			};
+
+			GPIO: gpio@ef600700 {
+				compatible = "ibm,gpio-405gp";
+				reg = <ef600700 20>;
+			};
+
+			EMAC: ethernet@ef600800 {
+				linux,network-index = <0>;
+				device_type = "network";
+				compatible = "ibm,emac-405gp", "ibm,emac";
+				interrupt-parent = <&UIC0>;
+				interrupts = <
+					f 4 /* Ethernet */
+					9 4 /* Ethernet Wake Up */>;
+				local-mac-address = [000000000000]; /* Filled in by zImage */
+				reg = <ef600800 70>;
+				mal-device = <&MAL>;
+				mal-tx-channel = <0>;
+				mal-rx-channel = <0>;
+				cell-index = <0>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rmii";
+				phy-map = <00000000>;
+			};
+
+		};
+
+		EBC0: ebc {
+			compatible = "ibm,ebc-405gp", "ibm,ebc";
+			dcr-reg = <012 2>;
+			#address-cells = <2>;
+			#size-cells = <1>;
+
+
+			/* The ranges property is supplied by the bootwrapper
+			 * and is based on the firmware's configuration of the
+			 * EBC bridge
+			 */
+			clock-frequency = <0>; /* Filled in by zImage */
+
+			/* NVRAM and RTC */
+			nvrtc@4,200000 {
+				compatible = "ds1742";
+				reg = <4 200000 0>; /* size fixed up by zImage */
+			};
+
+			/* "BCSR" CPLD contains a PCI irq controller */
+			bcsr@4,0 {
+				compatible = "ep405-bcsr";
+				reg = <4 0 10>;
+				interrupt-controller;
+				/* Routing table */
+				irq-routing = [	00	/* SYSERR */
+						01	/* STTM */
+						01	/* RTC */
+						01	/* FENET */
+						02	/* NB PCIIRQ mux ? */
+						03	/* SB Winbond 8259 ? */
+						04	/* Serial Ring */
+						05	/* USB (ep405pc) */
+						06	/* XIRQ 0 */
+						06	/* XIRQ 1 */
+						06	/* XIRQ 2 */
+						06	/* XIRQ 3 */
+						06	/* XIRQ 4 */
+						06	/* XIRQ 5 */
+						06	/* XIRQ 6 */
+						07];	/* Reserved */
+			};
+		};
+
+		PCI0: pci@ec000000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb405gp-pci", "ibm,plb-pci";
+			primary;
+			reg = <eec00000 8	/* Config space access */
+			       eed80000 4	/* IACK */
+			       eed80000 4	/* Special cycle */
+			       ef480000 40>;	/* Internal registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed. Chip supports a second
+			 * IO range but we don't use it for now
+			 */
+			ranges = <02000000 0 80000000 80000000 0 20000000
+				  01000000 0 00000000 e8000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 80000000>;
+
+			/* That's all I know about IRQs on that thing ... */
+			interrupt-map-mask = <f800 0 0 0>;
+			interrupt-map = <
+				/* USB */
+				7000 0 0 0 &UIC0 1e 8 /* IRQ5 */
+			>;
+		};
+	};
+
+	chosen {
+		linux,stdout-path = "/plb/opb/serial@ef600300";
+	};
+};
Index: linux-work/arch/powerpc/boot/4xx.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/4xx.c	2007-12-03 11:48:01.000000000 +1100
+++ linux-work/arch/powerpc/boot/4xx.c	2007-12-03 13:38:46.000000000 +1100
@@ -179,13 +179,16 @@ void ibm40x_dbcr_reset(void)
 #define EMAC_RESET 0x20000000
 void ibm4xx_quiesce_eth(u32 *emac0, u32 *emac1)
 {
-	/* Quiesce the MAL and EMAC(s) since PIBS/OpenBIOS don't do this for us */
+	/* Quiesce the MAL and EMAC(s) since PIBS/OpenBIOS don't
+	 * do this for us
+	 */
 	if (emac0)
 		*emac0 = EMAC_RESET;
 	if (emac1)
 		*emac1 = EMAC_RESET;
 
 	mtdcr(DCRN_MAL0_CFG, MAL_RESET);
+	while (mfdcr(DCRN_MAL0_CFG) & MAL_RESET) {};
 }
 
 /* Read 4xx EBC bus bridge registers to get mappings of the peripheral
@@ -298,3 +301,53 @@ void ibm440ep_fixup_clocks(unsigned int 
 	dt_fixup_clock("/plb/opb/serial@ef600500", uart0);
 	dt_fixup_clock("/plb/opb/serial@ef600600", uart0);
 }
+
+void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk)
+{
+	u32 pllmr = mfdcr(DCRN_CPC0_PLLMR);
+	u32 cpc0_cr0 = mfdcr(DCRN_405_CPC0_CR0);
+	u32 cpc0_cr1 = mfdcr(DCRN_405_CPC0_CR1);
+	u32 cpu, plb, opb, ebc, tb, uart0, uart1, m;
+	u32 fwdv, fbdv, cbdv, opdv, epdv, udiv;
+
+	fwdv = (8 - ((pllmr & 0xe0000000) >> 29));
+	fbdv = (pllmr & 0x1e000000) >> 25;
+	cbdv = ((pllmr & 0x00060000) >> 17) + 1;
+	opdv = ((pllmr & 0x00018000) >> 15) + 1;
+	epdv = ((pllmr & 0x00001800) >> 13) + 2;
+	udiv = ((cpc0_cr0 & 0x3e) >> 1) + 1;
+
+	m = fwdv * fbdv * cbdv;
+
+	cpu = sysclk * m / fwdv;
+	plb = cpu / cbdv;
+	opb = plb / opdv;
+	ebc = plb / epdv;
+
+	if (cpc0_cr0 & 0x80) {
+		/* uart0 uses the external clock */
+		uart0 = ser_clk;
+	} else {
+		uart0 = cpu / udiv;
+	}
+
+	if (cpc0_cr0 & 0x40) {
+		/* uart1 uses the external clock */
+		uart1 = ser_clk;
+	} else {
+		uart1 = cpu / udiv;
+	}
+
+	/* setup the timebase clock to tick at the cpu frequency */
+	cpc0_cr1 = cpc0_cr1 & ~0x00800000;
+	mtdcr(DCRN_405_CPC0_CR1, cpc0_cr1);
+	tb = cpu;
+
+	dt_fixup_cpu_clocks(cpu, tb, 0);
+	dt_fixup_clock("/plb", plb);
+	dt_fixup_clock("/plb/opb", opb);
+	dt_fixup_clock("/plb/ebc", ebc);
+	dt_fixup_clock("/plb/opb/serial@ef600300", uart0);
+	dt_fixup_clock("/plb/opb/serial@ef600400", uart1);
+}
+
Index: linux-work/arch/powerpc/boot/treeboot-walnut.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/treeboot-walnut.c	2007-12-03 11:48:01.000000000 +1100
+++ linux-work/arch/powerpc/boot/treeboot-walnut.c	2007-12-03 12:58:45.000000000 +1100
@@ -20,55 +20,6 @@
 
 BSS_STACK(4096);
 
-void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk)
-{
-	u32 pllmr = mfdcr(DCRN_CPC0_PLLMR);
-	u32 cpc0_cr0 = mfdcr(DCRN_405_CPC0_CR0);
-	u32 cpc0_cr1 = mfdcr(DCRN_405_CPC0_CR1);
-	u32 cpu, plb, opb, ebc, tb, uart0, uart1, m;
-	u32 fwdv, fbdv, cbdv, opdv, epdv, udiv;
-
-	fwdv = (8 - ((pllmr & 0xe0000000) >> 29));
-	fbdv = (pllmr & 0x1e000000) >> 25;
-	cbdv = ((pllmr & 0x00060000) >> 17) + 1;
-	opdv = ((pllmr & 0x00018000) >> 15) + 1;
-	epdv = ((pllmr & 0x00001800) >> 13) + 2;
-	udiv = ((cpc0_cr0 & 0x3e) >> 1) + 1;
-
-	m = fwdv * fbdv * cbdv;
-
-	cpu = sysclk * m / fwdv;
-	plb = cpu / cbdv;
-	opb = plb / opdv;
-	ebc = plb / epdv;
-
-	if (cpc0_cr0 & 0x80) {
-		/* uart0 uses the external clock */
-		uart0 = ser_clk;
-	} else {
-		uart0 = cpu / udiv;
-	}
-
-	if (cpc0_cr0 & 0x40) {
-		/* uart1 uses the external clock */
-		uart1 = ser_clk;
-	} else {
-		uart1 = cpu / udiv;
-	}
-
-	/* setup the timebase clock to tick at the cpu frequency */
-	cpc0_cr1 = cpc0_cr1 & ~0x00800000;
-	mtdcr(DCRN_405_CPC0_CR1, cpc0_cr1);
-	tb = cpu;
-
-	dt_fixup_cpu_clocks(cpu, tb, 0);
-	dt_fixup_clock("/plb", plb);
-	dt_fixup_clock("/plb/opb", opb);
-	dt_fixup_clock("/plb/ebc", ebc);
-	dt_fixup_clock("/plb/opb/serial@ef600300", uart0);
-	dt_fixup_clock("/plb/opb/serial@ef600400", uart1);
-}
-
 static void walnut_flashsel_fixup(void)
 {
 	void *devp, *sram;
Index: linux-work/arch/powerpc/platforms/40x/Kconfig
===================================================================
--- linux-work.orig/arch/powerpc/platforms/40x/Kconfig	2007-12-03 11:48:01.000000000 +1100
+++ linux-work/arch/powerpc/platforms/40x/Kconfig	2007-12-03 12:58:45.000000000 +1100
@@ -14,20 +14,13 @@
 #	help
 #	  This option enables support for the CPCI405 board.
 
-#config EP405
-#	bool "EP405/EP405PC"
-#	depends on 40x
-#	default n
-#	select 405GP
-#	help
-#	  This option enables support for the EP405/EP405PC boards.
-
-#config EP405PC
-#	bool "EP405PC Support"
-#	depends on EP405
-#	default y
-#	help
-#	  This option enables support for the extra features of the EP405PC board.
+config EP405
+	bool "EP405/EP405PC"
+	depends on 40x
+	default n
+	select 405GP
+	help
+	  This option enables support for the EP405/EP405PC boards.
 
 config KILAUEA
 	bool "Kilauea"
Index: linux-work/arch/powerpc/platforms/40x/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/platforms/40x/Makefile	2007-12-03 11:48:01.000000000 +1100
+++ linux-work/arch/powerpc/platforms/40x/Makefile	2007-12-03 12:58:45.000000000 +1100
@@ -1,3 +1,4 @@
 obj-$(CONFIG_KILAUEA)				+= kilauea.o
 obj-$(CONFIG_WALNUT)				+= walnut.o
 obj-$(CONFIG_XILINX_VIRTEX_GENERIC_BOARD)	+= virtex.o
+obj-$(CONFIG_EP405)				+= ep405.o
Index: linux-work/arch/powerpc/platforms/40x/ep405.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/platforms/40x/ep405.c	2007-12-03 12:58:45.000000000 +1100
@@ -0,0 +1,125 @@
+/*
+ * Architecture- / platform-specific boot-time initialization code for
+ * IBM PowerPC 4xx based boards. Adapted from original
+ * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
+ * <dan@net4x.com>.
+ *
+ * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 IBM Corporation
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ *
+ * Adapted to EP405 by Ben. Herrenschmidt <benh@kernel.crashing.org>
+ *
+ * TODO: Wire up the PCI IRQ mux and the southbridge interrupts
+ *
+ * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/pci-bridge.h>
+
+static struct device_node *bcsr_node;
+static void __iomem *bcsr_regs;
+
+/* BCSR registers  */
+#define BCSR_ID			0
+#define BCSR_PCI_CTRL	       	1
+#define BCSR_FLASH_NV_POR_CTRL	2
+#define BCSR_FENET_UART_CTRL	3
+#define BCSR_PCI_IRQ		4
+#define BCSR_XIRQ_SELECT	5
+#define BCSR_XIRQ_ROUTING	6
+#define BCSR_XIRQ_STATUS	7
+#define BCSR_XIRQ_STATUS2	8
+#define BCSR_SW_STAT_LED_CTRL	9
+#define BCSR_GPIO_IRQ_PAR_CTRL	10
+/* there's more, can't be bothered typing them tho */
+
+
+static struct of_device_id ep405_of_bus[] = {
+	{ .compatible = "ibm,plb3", },
+	{ .compatible = "ibm,opb", },
+	{ .compatible = "ibm,ebc", },
+	{},
+};
+
+static int __init ep405_device_probe(void)
+{
+	if (!machine_is(ep405))
+		return 0;
+
+	/* FIXME: do bus probe here */
+	of_platform_bus_probe(NULL, ep405_of_bus, NULL);
+
+	return 0;
+}
+device_initcall(ep405_device_probe);
+
+static void __init ep405_init_bcsr(void)
+{
+	const u8 *irq_routing;
+	int i;
+
+	/* Find the bloody thing & map it */
+	bcsr_node = of_find_compatible_node(NULL, NULL, "ep405-bcsr");
+	if (bcsr_node == NULL) {
+		printk(KERN_ERR "EP405 BCSR not found !\n");
+		return;
+	}
+	bcsr_regs = of_iomap(bcsr_node, 0);
+	if (bcsr_regs == NULL) {
+		printk(KERN_ERR "EP405 BCSR failed to map !\n");
+		return;
+	}
+
+	/* Get the irq-routing property and apply the routing to the CPLD */
+	irq_routing = of_get_property(bcsr_node, "irq-routing", NULL);
+	if (irq_routing == NULL)
+		return;
+	for (i = 0; i < 16; i++) {
+		u8 irq = irq_routing[i];
+		out_8(bcsr_regs + BCSR_XIRQ_SELECT, i);
+		out_8(bcsr_regs + BCSR_XIRQ_ROUTING, irq);
+	}
+	in_8(bcsr_regs + BCSR_XIRQ_SELECT);
+	mb();
+	out_8(bcsr_regs + BCSR_GPIO_IRQ_PAR_CTRL, 0xfe);
+}
+
+static void __init ep405_setup_arch(void)
+{
+	/* Find & init the BCSR CPLD */
+	ep405_init_bcsr();
+}
+
+static int __init ep405_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "ep405"))
+		return 0;
+
+	return 1;
+}
+
+define_machine(ep405) {
+	.name			= "EP405",
+	.probe			= ep405_probe,
+	.setup_arch		= ep405_setup_arch,
+	.progress		= udbg_progress,
+	.init_IRQ		= uic_init_tree,
+	.get_irq		= uic_get_irq,
+	.calibrate_decr		= generic_calibrate_decr,
+};
Index: linux-work/arch/powerpc/boot/4xx.h
===================================================================
--- linux-work.orig/arch/powerpc/boot/4xx.h	2007-12-03 11:48:01.000000000 +1100
+++ linux-work/arch/powerpc/boot/4xx.h	2007-12-03 12:58:45.000000000 +1100
@@ -18,5 +18,6 @@ void ibm40x_dbcr_reset(void);
 void ibm4xx_quiesce_eth(u32 *emac0, u32 *emac1);
 void ibm4xx_fixup_ebc_ranges(const char *ebc);
 void ibm440ep_fixup_clocks(unsigned int sysclk, unsigned int ser_clk);
+void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk);
 
 #endif /* _POWERPC_BOOT_4XX_H_ */
Index: linux-work/arch/powerpc/boot/wrapper
===================================================================
--- linux-work.orig/arch/powerpc/boot/wrapper	2007-12-03 11:48:01.000000000 +1100
+++ linux-work/arch/powerpc/boot/wrapper	2007-12-03 12:58:45.000000000 +1100
@@ -163,7 +163,7 @@ ps3)
     ksection=.kernel:vmlinux.bin
     isection=.kernel:initrd
     ;;
-ep88xc)
+ep88xc|ep405)
     platformo="$object/fixed-head.o $object/$platform.o"
     binary=y
     ;;
Index: linux-work/arch/powerpc/configs/ep405_defconfig
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/configs/ep405_defconfig	2007-12-03 12:58:45.000000000 +1100
@@ -0,0 +1,951 @@
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.24-rc2
+# Wed Nov 21 16:44:30 2007
+#
+# CONFIG_PPC64 is not set
+
+#
+# Processor support
+#
+# CONFIG_6xx is not set
+# CONFIG_PPC_85xx is not set
+# CONFIG_PPC_8xx is not set
+CONFIG_40x=y
+# CONFIG_44x is not set
+# CONFIG_E200 is not set
+CONFIG_4xx=y
+# CONFIG_PPC_MM_SLICES is not set
+CONFIG_NOT_COHERENT_CACHE=y
+CONFIG_PPC32=y
+CONFIG_WORD_SIZE=32
+CONFIG_PPC_MERGE=y
+CONFIG_MMU=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_IRQ_PER_CPU=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_ARCH_HAS_ILOG2_U32=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+# CONFIG_ARCH_NO_VIRT_TO_BUS is not set
+CONFIG_PPC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_GENERIC_NVRAM=y
+CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
+CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_PPC_OF=y
+CONFIG_OF=y
+CONFIG_PPC_UDBG_16550=y
+# CONFIG_GENERIC_TBSYNC is not set
+CONFIG_AUDIT_ARCH=y
+CONFIG_GENERIC_BUG=y
+# CONFIG_DEFAULT_UIMAGE is not set
+CONFIG_PPC_DCR_NATIVE=y
+# CONFIG_PPC_DCR_MMIO is not set
+CONFIG_PPC_DCR=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+# CONFIG_BSD_PROCESS_ACCT is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_USER_NS is not set
+# CONFIG_AUDIT is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_CGROUPS is not set
+CONFIG_FAIR_GROUP_SCHED=y
+CONFIG_FAIR_USER_SCHED=y
+# CONFIG_FAIR_CGROUP_SCHED is not set
+CONFIG_SYSFS_DEPRECATED=y
+# CONFIG_RELAY is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_KALLSYMS_EXTRA_PASS=y
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_ANON_INODES=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLUB_DEBUG=y
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+# CONFIG_SLOB is not set
+CONFIG_RT_MUTEXES=y
+# CONFIG_TINY_SHMEM is not set
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_KMOD=y
+CONFIG_BLOCK=y
+CONFIG_LBD=y
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_LSF is not set
+# CONFIG_BLK_DEV_BSG is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+CONFIG_DEFAULT_AS=y
+# CONFIG_DEFAULT_DEADLINE is not set
+# CONFIG_DEFAULT_CFQ is not set
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="anticipatory"
+
+#
+# Platform support
+#
+# CONFIG_PPC_MPC52xx is not set
+# CONFIG_PPC_MPC5200 is not set
+# CONFIG_PPC_CELL is not set
+# CONFIG_PPC_CELL_NATIVE is not set
+# CONFIG_PQ2ADS is not set
+CONFIG_EP405=y
+# CONFIG_KILAUEA is not set
+# CONFIG_WALNUT is not set
+# CONFIG_XILINX_VIRTEX_GENERIC_BOARD is not set
+CONFIG_405GP=y
+CONFIG_IBM405_ERR77=y
+CONFIG_IBM405_ERR51=y
+# CONFIG_MPIC is not set
+# CONFIG_MPIC_WEIRD is not set
+# CONFIG_PPC_I8259 is not set
+# CONFIG_PPC_RTAS is not set
+# CONFIG_MMIO_NVRAM is not set
+# CONFIG_PPC_MPC106 is not set
+# CONFIG_PPC_970_NAP is not set
+# CONFIG_PPC_INDIRECT_IO is not set
+# CONFIG_GENERIC_IOMAP is not set
+# CONFIG_CPU_FREQ is not set
+# CONFIG_CPM2 is not set
+# CONFIG_FSL_ULI1575 is not set
+
+#
+# Kernel options
+#
+# CONFIG_HIGHMEM is not set
+# CONFIG_TICK_ONESHOT is not set
+# CONFIG_NO_HZ is not set
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+# CONFIG_HZ_100 is not set
+CONFIG_HZ_250=y
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_1000 is not set
+CONFIG_HZ=250
+CONFIG_PREEMPT_NONE=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
+# CONFIG_PREEMPT is not set
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_MISC is not set
+# CONFIG_MATH_EMULATION is not set
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+CONFIG_ARCH_FLATMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_SPARSEMEM_STATIC is not set
+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_RESOURCES_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=1
+CONFIG_BOUNCE=y
+CONFIG_VIRT_TO_BUS=y
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_CMDLINE_BOOL is not set
+# CONFIG_PM is not set
+CONFIG_SUSPEND_UP_POSSIBLE=y
+CONFIG_HIBERNATION_UP_POSSIBLE=y
+CONFIG_SECCOMP=y
+CONFIG_WANT_DEVICE_TREE=y
+CONFIG_DEVICE_TREE="ep405.dts"
+CONFIG_ISA_DMA_API=y
+
+#
+# Bus options
+#
+CONFIG_ZONE_DMA=y
+CONFIG_PPC_INDIRECT_PCI=y
+CONFIG_PCI=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_SYSCALL=y
+# CONFIG_PCIEPORTBUS is not set
+CONFIG_ARCH_SUPPORTS_MSI=y
+# CONFIG_PCI_MSI is not set
+CONFIG_PCI_LEGACY=y
+# CONFIG_PCI_DEBUG is not set
+# CONFIG_PCCARD is not set
+# CONFIG_HOTPLUG_PCI is not set
+
+#
+# Advanced setup
+#
+# CONFIG_ADVANCED_OPTIONS is not set
+
+#
+# Default settings for advanced configuration options are used
+#
+CONFIG_HIGHMEM_START=0xfe000000
+CONFIG_LOWMEM_SIZE=0x30000000
+CONFIG_KERNEL_START=0xc0000000
+CONFIG_TASK_SIZE=0xc0000000
+CONFIG_CONSISTENT_START=0xff100000
+CONFIG_CONSISTENT_SIZE=0x00200000
+CONFIG_BOOT_LOAD=0x00400000
+
+#
+# Networking
+#
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+# CONFIG_PACKET_MMAP is not set
+CONFIG_UNIX=y
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_IP_PNP_RARP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_INET6_XFRM_TUNNEL is not set
+# CONFIG_INET6_TUNNEL is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_SCHED is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+
+#
+# Wireless
+#
+# CONFIG_CFG80211 is not set
+# CONFIG_WIRELESS_EXT is not set
+# CONFIG_MAC80211 is not set
+# CONFIG_IEEE80211 is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+CONFIG_CONNECTOR=y
+CONFIG_PROC_EVENTS=y
+CONFIG_MTD=y
+# CONFIG_MTD_DEBUG is not set
+# CONFIG_MTD_CONCAT is not set
+CONFIG_MTD_PARTITIONS=y
+# CONFIG_MTD_REDBOOT_PARTS is not set
+CONFIG_MTD_CMDLINE_PARTS=y
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLKDEVS=m
+CONFIG_MTD_BLOCK=m
+# CONFIG_MTD_BLOCK_RO is not set
+# CONFIG_FTL is not set
+# CONFIG_NFTL is not set
+# CONFIG_INFTL is not set
+# CONFIG_RFD_FTL is not set
+# CONFIG_SSFDC is not set
+# CONFIG_MTD_OOPS is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+CONFIG_MTD_CFI=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_GEN_PROBE=y
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+# CONFIG_MTD_CFI_I4 is not set
+# CONFIG_MTD_CFI_I8 is not set
+# CONFIG_MTD_CFI_INTELEXT is not set
+CONFIG_MTD_CFI_AMDSTD=y
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+# CONFIG_MTD_RAM is not set
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_PHYSMAP_OF=y
+# CONFIG_MTD_INTEL_VR_NOR is not set
+# CONFIG_MTD_PLATRAM is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_PMC551 is not set
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+# CONFIG_MTD_BLOCK2MTD is not set
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+# CONFIG_MTD_NAND is not set
+# CONFIG_MTD_ONENAND is not set
+
+#
+# UBI - Unsorted block images
+#
+# CONFIG_MTD_UBI is not set
+CONFIG_OF_DEVICE=y
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_FD is not set
+# CONFIG_BLK_CPQ_DA is not set
+# CONFIG_BLK_CPQ_CISS_DA is not set
+# CONFIG_BLK_DEV_DAC960 is not set
+# CONFIG_BLK_DEV_UMEM is not set
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+# CONFIG_BLK_DEV_NBD is not set
+# CONFIG_BLK_DEV_SX8 is not set
+# CONFIG_BLK_DEV_UB is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=35000
+CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_XILINX_SYSACE is not set
+CONFIG_MISC_DEVICES=y
+# CONFIG_PHANTOM is not set
+# CONFIG_EEPROM_93CX6 is not set
+# CONFIG_SGI_IOC4 is not set
+# CONFIG_TIFM_CORE is not set
+# CONFIG_IDE is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_ATA is not set
+# CONFIG_MD is not set
+# CONFIG_FUSION is not set
+
+#
+# IEEE 1394 (FireWire) support
+#
+# CONFIG_FIREWIRE is not set
+# CONFIG_IEEE1394 is not set
+# CONFIG_I2O is not set
+# CONFIG_MACINTOSH_DRIVERS is not set
+CONFIG_NETDEVICES=y
+# CONFIG_NETDEVICES_MULTIQUEUE is not set
+# CONFIG_DUMMY is not set
+# CONFIG_BONDING is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_EQUALIZER is not set
+# CONFIG_TUN is not set
+# CONFIG_VETH is not set
+# CONFIG_IP1000 is not set
+# CONFIG_ARCNET is not set
+# CONFIG_PHYLIB is not set
+CONFIG_NET_ETHERNET=y
+# CONFIG_MII is not set
+# CONFIG_HAPPYMEAL is not set
+# CONFIG_SUNGEM is not set
+# CONFIG_CASSINI is not set
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_TULIP is not set
+# CONFIG_HP100 is not set
+CONFIG_IBM_NEW_EMAC=y
+CONFIG_IBM_NEW_EMAC_RXB=128
+CONFIG_IBM_NEW_EMAC_TXB=64
+CONFIG_IBM_NEW_EMAC_POLL_WEIGHT=32
+CONFIG_IBM_NEW_EMAC_RX_COPY_THRESHOLD=256
+CONFIG_IBM_NEW_EMAC_RX_SKB_HEADROOM=0
+# CONFIG_IBM_NEW_EMAC_DEBUG is not set
+CONFIG_IBM_NEW_EMAC_ZMII=y
+# CONFIG_IBM_NEW_EMAC_RGMII is not set
+# CONFIG_IBM_NEW_EMAC_TAH is not set
+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
+# CONFIG_NET_PCI is not set
+# CONFIG_B44 is not set
+CONFIG_NETDEV_1000=y
+# CONFIG_ACENIC is not set
+# CONFIG_DL2K is not set
+# CONFIG_E1000 is not set
+# CONFIG_E1000E is not set
+# CONFIG_NS83820 is not set
+# CONFIG_HAMACHI is not set
+# CONFIG_YELLOWFIN is not set
+# CONFIG_R8169 is not set
+# CONFIG_SIS190 is not set
+# CONFIG_SKGE is not set
+# CONFIG_SKY2 is not set
+# CONFIG_SK98LIN is not set
+# CONFIG_VIA_VELOCITY is not set
+# CONFIG_TIGON3 is not set
+# CONFIG_BNX2 is not set
+# CONFIG_QLA3XXX is not set
+# CONFIG_ATL1 is not set
+CONFIG_NETDEV_10000=y
+# CONFIG_CHELSIO_T1 is not set
+# CONFIG_CHELSIO_T3 is not set
+# CONFIG_IXGBE is not set
+# CONFIG_IXGB is not set
+# CONFIG_S2IO is not set
+# CONFIG_MYRI10GE is not set
+# CONFIG_NETXEN_NIC is not set
+# CONFIG_NIU is not set
+# CONFIG_MLX4_CORE is not set
+# CONFIG_TEHUTI is not set
+# CONFIG_TR is not set
+
+#
+# Wireless LAN
+#
+# CONFIG_WLAN_PRE80211 is not set
+# CONFIG_WLAN_80211 is not set
+
+#
+# USB Network Adapters
+#
+# CONFIG_USB_CATC is not set
+# CONFIG_USB_KAWETH is not set
+# CONFIG_USB_PEGASUS is not set
+# CONFIG_USB_RTL8150 is not set
+# CONFIG_USB_USBNET is not set
+# CONFIG_WAN is not set
+# CONFIG_FDDI is not set
+# CONFIG_HIPPI is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_SHAPER is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+# CONFIG_INPUT is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+# CONFIG_SERIAL_NONSTANDARD is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_PCI=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_EXTENDED=y
+# CONFIG_SERIAL_8250_MANY_PORTS is not set
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+# CONFIG_SERIAL_8250_DETECT_IRQ is not set
+# CONFIG_SERIAL_8250_RSA is not set
+
+#
+# Non-8250 serial port support
+#
+# CONFIG_SERIAL_UARTLITE is not set
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_JSM is not set
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_NVRAM is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+# CONFIG_APPLICOM is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+CONFIG_DEVPORT=y
+# CONFIG_I2C is not set
+
+#
+# SPI support
+#
+# CONFIG_SPI is not set
+# CONFIG_SPI_MASTER is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_WATCHDOG is not set
+
+#
+# Sonics Silicon Backplane
+#
+CONFIG_SSB_POSSIBLE=y
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_SM501 is not set
+
+#
+# Multimedia devices
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_DAB is not set
+
+#
+# Graphics support
+#
+# CONFIG_AGP is not set
+# CONFIG_DRM is not set
+# CONFIG_VGASTATE is not set
+CONFIG_VIDEO_OUTPUT_CONTROL=m
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+
+#
+# Sound
+#
+# CONFIG_SOUND is not set
+CONFIG_USB_SUPPORT=y
+CONFIG_USB_ARCH_HAS_HCD=y
+CONFIG_USB_ARCH_HAS_OHCI=y
+CONFIG_USB_ARCH_HAS_EHCI=y
+CONFIG_USB=y
+# CONFIG_USB_DEBUG is not set
+
+#
+# Miscellaneous USB options
+#
+CONFIG_USB_DEVICEFS=y
+CONFIG_USB_DEVICE_CLASS=y
+# CONFIG_USB_DYNAMIC_MINORS is not set
+# CONFIG_USB_OTG is not set
+
+#
+# USB Host Controller Drivers
+#
+# CONFIG_USB_EHCI_HCD is not set
+# CONFIG_USB_ISP116X_HCD is not set
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_HCD_PPC_OF=y
+CONFIG_USB_OHCI_HCD_PPC_OF_BE=y
+CONFIG_USB_OHCI_HCD_PPC_OF_LE=y
+CONFIG_USB_OHCI_HCD_PCI=y
+CONFIG_USB_OHCI_BIG_ENDIAN_DESC=y
+CONFIG_USB_OHCI_BIG_ENDIAN_MMIO=y
+CONFIG_USB_OHCI_LITTLE_ENDIAN=y
+# CONFIG_USB_UHCI_HCD is not set
+# CONFIG_USB_SL811_HCD is not set
+# CONFIG_USB_R8A66597_HCD is not set
+
+#
+# USB Device Class drivers
+#
+# CONFIG_USB_ACM is not set
+# CONFIG_USB_PRINTER is not set
+
+#
+# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
+#
+
+#
+# may also be needed; see USB_STORAGE Help for more information
+#
+# CONFIG_USB_LIBUSUAL is not set
+
+#
+# USB Imaging devices
+#
+# CONFIG_USB_MDC800 is not set
+CONFIG_USB_MON=y
+
+#
+# USB port drivers
+#
+
+#
+# USB Serial Converter support
+#
+# CONFIG_USB_SERIAL is not set
+
+#
+# USB Miscellaneous drivers
+#
+# CONFIG_USB_EMI62 is not set
+# CONFIG_USB_EMI26 is not set
+# CONFIG_USB_ADUTUX is not set
+# CONFIG_USB_AUERSWALD is not set
+# CONFIG_USB_RIO500 is not set
+# CONFIG_USB_LEGOTOWER is not set
+# CONFIG_USB_LCD is not set
+# CONFIG_USB_BERRY_CHARGE is not set
+# CONFIG_USB_LED is not set
+# CONFIG_USB_CYPRESS_CY7C63 is not set
+# CONFIG_USB_CYTHERM is not set
+# CONFIG_USB_PHIDGET is not set
+# CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_FTDI_ELAN is not set
+# CONFIG_USB_APPLEDISPLAY is not set
+# CONFIG_USB_LD is not set
+# CONFIG_USB_TRANCEVIBRATOR is not set
+# CONFIG_USB_IOWARRIOR is not set
+# CONFIG_USB_TEST is not set
+
+#
+# USB DSL modem support
+#
+
+#
+# USB Gadget Support
+#
+# CONFIG_USB_GADGET is not set
+# CONFIG_MMC is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_INFINIBAND is not set
+# CONFIG_EDAC is not set
+# CONFIG_RTC_CLASS is not set
+
+#
+# Userspace I/O
+#
+# CONFIG_UIO is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_EXT4DEV_FS is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_FS_POSIX_ACL is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
+# CONFIG_OCFS2_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_ROMFS_FS is not set
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+CONFIG_DNOTIFY=y
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+
+#
+# Miscellaneous filesystems
+#
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_JFFS2_FS is not set
+CONFIG_CRAMFS=y
+# CONFIG_VXFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+# CONFIG_NFS_V4 is not set
+# CONFIG_NFS_DIRECTIO is not set
+# CONFIG_NFSD is not set
+CONFIG_ROOT_NFS=y
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+# CONFIG_SUNRPC_BIND34 is not set
+# CONFIG_RPCSEC_GSS_KRB5 is not set
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+# CONFIG_UCC_SLOW is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_PLIST=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
+CONFIG_INSTRUMENTATION=y
+# CONFIG_PROFILING is not set
+# CONFIG_KPROBES is not set
+# CONFIG_MARKERS is not set
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+CONFIG_DETECT_SOFTLOCKUP=y
+CONFIG_SCHED_DEBUG=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_SLUB_DEBUG_ON is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+# CONFIG_DEBUG_INFO is not set
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+CONFIG_FORCED_INLINING=y
+# CONFIG_BOOT_PRINTK_DELAY is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_SAMPLES is not set
+# CONFIG_DEBUG_STACKOVERFLOW is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_PAGEALLOC is not set
+# CONFIG_DEBUGGER is not set
+# CONFIG_BDI_SWITCH is not set
+# CONFIG_PPC_EARLY_DEBUG is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+CONFIG_CRYPTO=y
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_MANAGER=y
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_MD4 is not set
+CONFIG_CRYPTO_MD5=y
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_WP512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_GF128MUL is not set
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_PCBC=y
+# CONFIG_CRYPTO_LRW is not set
+# CONFIG_CRYPTO_XTS is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_CRC32C is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_TEST is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+CONFIG_CRYPTO_HW=y
+# CONFIG_PPC_CLOCK is not set

Re: [PATCH 16/25] powerpc: EP405 boards support for arch/powerpc

[Josh Boyer]

On Thu, 06 Dec 2007 19:00:15 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> 
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
> Index: linux-work/arch/powerpc/boot/dts/ep405.dts
> ===================================================================
> --- /dev/null	1970-01-01 00:00:00.000000000 +0000
> +++ linux-work/arch/powerpc/boot/dts/ep405.dts	2007-12-03 12:58:45.000000000 +1100
> @@ -0,0 +1,221 @@
> +/*
> + * Device Tree Source for EP405
> + *
> + * Copyright 2007 IBM Corp.
> + * Josh Boyer <jwboyer@linux.vnet.ibm.com>

I still don't think I wrote this ;)

<snip>

> +static struct of_device_id ep405_of_bus[] = {
> +	{ .compatible = "ibm,plb3", },
> +	{ .compatible = "ibm,opb", },
> +	{ .compatible = "ibm,ebc", },
> +	{},
> +};
> +
> +static int __init ep405_device_probe(void)
> +{
> +	if (!machine_is(ep405))
> +		return 0;
> +
> +	/* FIXME: do bus probe here */

I should really remove this stupid FIXME from my files so people stop
copying it into theirs ;)

> +	of_platform_bus_probe(NULL, ep405_of_bus, NULL);
> +
> +	return 0;
> +}
> +device_initcall(ep405_device_probe);
> +
> +static void __init ep405_init_bcsr(void)
> +{
> +	const u8 *irq_routing;
> +	int i;
> +
> +	/* Find the bloody thing & map it */
> +	bcsr_node = of_find_compatible_node(NULL, NULL, "ep405-bcsr");
> +	if (bcsr_node == NULL) {
> +		printk(KERN_ERR "EP405 BCSR not found !\n");
> +		return;
> +	}
> +	bcsr_regs = of_iomap(bcsr_node, 0);
> +	if (bcsr_regs == NULL) {
> +		printk(KERN_ERR "EP405 BCSR failed to map !\n");
> +		return;
> +	}

Is there a reason you have bcsr_node and bcsr_regs as static globals
and leave the mapping present?  I can't see another use of them outside
of this function, which only gets called once.

> +
> +	/* Get the irq-routing property and apply the routing to the CPLD */
> +	irq_routing = of_get_property(bcsr_node, "irq-routing", NULL);
> +	if (irq_routing == NULL)
> +		return;
> +	for (i = 0; i < 16; i++) {
> +		u8 irq = irq_routing[i];
> +		out_8(bcsr_regs + BCSR_XIRQ_SELECT, i);
> +		out_8(bcsr_regs + BCSR_XIRQ_ROUTING, irq);
> +	}
> +	in_8(bcsr_regs + BCSR_XIRQ_SELECT);
> +	mb();
> +	out_8(bcsr_regs + BCSR_GPIO_IRQ_PAR_CTRL, 0xfe);
> +}
> +
> +static void __init ep405_setup_arch(void)
> +{
> +	/* Find & init the BCSR CPLD */
> +	ep405_init_bcsr();
> +}
> +
> +static int __init ep405_probe(void)
> +{
> +	unsigned long root = of_get_flat_dt_root();
> +
> +	if (!of_flat_dt_is_compatible(root, "ep405"))
> +		return 0;
> +
> +	return 1;
> +}
> +
> +define_machine(ep405) {
> +	.name			= "EP405",
> +	.probe			= ep405_probe,
> +	.setup_arch		= ep405_setup_arch,
> +	.progress		= udbg_progress,
> +	.init_IRQ		= uic_init_tree,
> +	.get_irq		= uic_get_irq,
> +	.calibrate_decr		= generic_calibrate_decr,
> +};

josh

Re: [PATCH 16/25] powerpc: EP405 boards support for arch/powerpc

[Benjamin Herrenschmidt]

On Thu, 2007-12-06 at 21:05 -0600, Josh Boyer wrote:
> On Thu, 06 Dec 2007 19:00:15 +1100
> Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> 
> > 
> > Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > ---
> > Index: linux-work/arch/powerpc/boot/dts/ep405.dts
> > ===================================================================
> > --- /dev/null	1970-01-01 00:00:00.000000000 +0000
> > +++ linux-work/arch/powerpc/boot/dts/ep405.dts	2007-12-03 12:58:45.000000000 +1100
> > @@ -0,0 +1,221 @@
> > +/*
> > + * Device Tree Source for EP405
> > + *
> > + * Copyright 2007 IBM Corp.
> > + * Josh Boyer <jwboyer@linux.vnet.ibm.com>
> 
> I still don't think I wrote this ;)

Yeah, right, I'll fix that, easy enough.


 .../...

> > +	if (!machine_is(ep405))
> > +		return 0;
> > +
> > +	/* FIXME: do bus probe here */
> 
> I should really remove this stupid FIXME from my files so people stop
> copying it into theirs ;)

Yup :-) Your fault ;-)

  .../...

> > +	/* Find the bloody thing & map it */
> > +	bcsr_node = of_find_compatible_node(NULL, NULL, "ep405-bcsr");
> > +	if (bcsr_node == NULL) {
> > +		printk(KERN_ERR "EP405 BCSR not found !\n");
> > +		return;
> > +	}
> > +	bcsr_regs = of_iomap(bcsr_node, 0);
> > +	if (bcsr_regs == NULL) {
> > +		printk(KERN_ERR "EP405 BCSR failed to map !\n");
> > +		return;
> > +	}
> 
> Is there a reason you have bcsr_node and bcsr_regs as static globals
> and leave the mapping present?  I can't see another use of them outside
> of this function, which only gets called once.

For future use mostly. There's truckloads of things on this board going
trough this FPGA and It's likely that a more complete port will need to
use this things. In fact, the CPLD can more/less be used as a cascaded
IRQ on the PCI interrupts on that thing.

Ben.

Re: [PATCH 16/25] powerpc: EP405 boards support for arch/powerpc

[Benjamin Herrenschmidt]

powerpc: EP405 boards support for arch/powerpc

Brings EP405 support to arch/powerpc. The IRQ routing for the CPLD
comes from a device-tree property, PCI is working to the point where
I can see the video card, USB device, and south bridge.

This should work with both EP405 and EP405PC.

I've not totally figured out how IRQs are wired on this hardware
though, thus at this stage, expect only USB interrupts working,
pretty much the same as what arch/ppc did.

Also, the flash, nvram, rtc and temp control still have to be wired.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Note about IRQ routing: The doc is very obscure in that area.

I _think_ the SB interrupt on the CPLD is actually the Windond's
8259 output and the NB interrupt is the PCI_A...PCI_D mux in
there (which can be implemented as a cascaded controller) but
I haven't sorted that out yet. If anybody from Embedded Planet
is around, I could use some advice there.

If my deductions are correct, then we would need to wire up the
8259 driver to SB, which should be trivial provided I stick the
windbond bridge in the device-tree, or at least part of it,
and probably implement a cascaded controller for the PCI IRQ
A...D mux thingy, which should also be trivial.

Note also that it tends to lockup during the transition from
the boot wrapper to the kernel, before udbg is started. I didn't
have a RiscWatch at hand so I haven't yet been able to track that
down. It's random though, quite weird. Maybe some stale TLB entries
or cache content that isn't cleared properly...

Index: linux-work/arch/powerpc/boot/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/boot/Makefile	2007-12-10 15:52:04.000000000 +1100
+++ linux-work/arch/powerpc/boot/Makefile	2007-12-10 15:54:23.000000000 +1100
@@ -56,7 +56,7 @@ src-plat := of.c cuboot-52xx.c cuboot-83
 		cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
 		ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
 		cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c \
-		fixed-head.S ep88xc.c cuboot-hpc2.c
+		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -150,6 +150,7 @@ image-$(CONFIG_DEFAULT_UIMAGE)		+= uImag
 ifneq ($(CONFIG_DEVICE_TREE),"")
 image-$(CONFIG_PPC_8xx)			+= cuImage.8xx
 image-$(CONFIG_PPC_EP88XC)		+= zImage.ep88xc
+image-$(CONFIG_EP405)			+= zImage.ep405
 image-$(CONFIG_8260)			+= cuImage.pq2
 image-$(CONFIG_PPC_MPC52xx)		+= cuImage.52xx
 image-$(CONFIG_PPC_83xx)		+= cuImage.83xx
Index: linux-work/arch/powerpc/boot/ep405.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/boot/ep405.c	2007-12-10 15:54:23.000000000 +1100
@@ -0,0 +1,74 @@
+/*
+ * Embedded Planet EP405 with PlanetCore firmware
+ *
+ * (c) Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp,\
+ *
+ * Based on ep88xc.c by
+ *
+ * Scott Wood <scottwood@freescale.com>
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "stdio.h"
+#include "planetcore.h"
+#include "dcr.h"
+#include "4xx.h"
+#include "io.h"
+
+static char *table;
+static u64 mem_size;
+
+static void platform_fixups(void)
+{
+	u64 val;
+	void *nvrtc;
+
+	dt_fixup_memory(0, mem_size);
+	planetcore_set_mac_addrs(table);
+
+	if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) {
+		printf("No PlanetCore crystal frequency key.\r\n");
+		return;
+	}
+	ibm405gp_fixup_clocks(val, 0xa8c000);
+	ibm4xx_quiesce_eth((u32 *)0xef600800, NULL);
+	ibm4xx_fixup_ebc_ranges("/plb/ebc");
+
+	if (!planetcore_get_decimal(table, PLANETCORE_KEY_KB_NVRAM, &val)) {
+		printf("No PlanetCore NVRAM size key.\r\n");
+		return;
+	}
+	nvrtc = finddevice("/plb/ebc/nvrtc@4,200000");
+	if (nvrtc != NULL) {
+		u32 reg[3] = { 4, 0x200000, 0};
+		getprop(nvrtc, "reg", reg, 3);
+		reg[2] = (val << 10) & 0xffffffff;
+		setprop(nvrtc, "reg", reg, 3);
+	}
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+		   unsigned long r6, unsigned long r7)
+{
+	table = (char *)r3;
+	planetcore_prepare_table(table);
+
+	if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size))
+		return;
+
+	mem_size *= 1024 * 1024;
+	simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64);
+
+	ft_init(_dtb_start, _dtb_end - _dtb_start, 32);
+
+	planetcore_set_stdout_path(table);
+
+	serial_console_init();
+	platform_ops.fixups = platform_fixups;
+}
Index: linux-work/arch/powerpc/boot/dts/ep405.dts
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/boot/dts/ep405.dts	2007-12-10 15:55:04.000000000 +1100
@@ -0,0 +1,221 @@
+/*
+ * Device Tree Source for EP405
+ *
+ * Copyright 2007 IBM Corp.
+ * Benjamin Herrenschmidt <benh@kernel.crashing.org>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	model = "ep405";
+	compatible = "ep405";
+	dcr-parent = <&/cpus/PowerPC,405GP@0>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,405GP@0 {
+			device_type = "cpu";
+			reg = <0>;
+			clock-frequency = <bebc200>; /* Filled in by zImage */
+			timebase-frequency = <0>; /* Filled in by zImage */
+			i-cache-line-size = <20>;
+			d-cache-line-size = <20>;
+			i-cache-size = <4000>;
+			d-cache-size = <4000>;
+			dcr-controller;
+			dcr-access-method = "native";
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0 0>; /* Filled in by zImage */
+	};
+
+	UIC0: interrupt-controller {
+		compatible = "ibm,uic";
+		interrupt-controller;
+		cell-index = <0>;
+		dcr-reg = <0c0 9>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+	};
+
+	plb {
+		compatible = "ibm,plb3";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+		clock-frequency = <0>; /* Filled in by zImage */
+
+		SDRAM0: memory-controller {
+			compatible = "ibm,sdram-405gp";
+			dcr-reg = <010 2>;
+		};
+
+		MAL: mcmal {
+			compatible = "ibm,mcmal-405gp", "ibm,mcmal";
+			dcr-reg = <180 62>;
+			num-tx-chans = <1>;
+			num-rx-chans = <1>;
+			interrupt-parent = <&UIC0>;
+			interrupts = <
+				b 4 /* TXEOB */
+				c 4 /* RXEOB */
+				a 4 /* SERR */
+				d 4 /* TXDE */
+				e 4 /* RXDE */>;
+		};
+
+		POB0: opb {
+			compatible = "ibm,opb-405gp", "ibm,opb";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <ef600000 ef600000 a00000>;
+			dcr-reg = <0a0 5>;
+			clock-frequency = <0>; /* Filled in by zImage */
+
+			UART0: serial@ef600300 {
+				device_type = "serial";
+				compatible = "ns16550";
+				reg = <ef600300 8>;
+				virtual-reg = <ef600300>;
+				clock-frequency = <0>; /* Filled in by zImage */
+				current-speed = <2580>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <0 4>;
+			};
+
+			UART1: serial@ef600400 {
+				device_type = "serial";
+				compatible = "ns16550";
+				reg = <ef600400 8>;
+				virtual-reg = <ef600400>;
+				clock-frequency = <0>; /* Filled in by zImage */
+				current-speed = <2580>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <1 4>;
+			};
+
+			IIC: i2c@ef600500 {
+				compatible = "ibm,iic-405gp", "ibm,iic";
+				reg = <ef600500 11>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <2 4>;
+			};
+
+			GPIO: gpio@ef600700 {
+				compatible = "ibm,gpio-405gp";
+				reg = <ef600700 20>;
+			};
+
+			EMAC: ethernet@ef600800 {
+				linux,network-index = <0>;
+				device_type = "network";
+				compatible = "ibm,emac-405gp", "ibm,emac";
+				interrupt-parent = <&UIC0>;
+				interrupts = <
+					f 4 /* Ethernet */
+					9 4 /* Ethernet Wake Up */>;
+				local-mac-address = [000000000000]; /* Filled in by zImage */
+				reg = <ef600800 70>;
+				mal-device = <&MAL>;
+				mal-tx-channel = <0>;
+				mal-rx-channel = <0>;
+				cell-index = <0>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rmii";
+				phy-map = <00000000>;
+			};
+
+		};
+
+		EBC0: ebc {
+			compatible = "ibm,ebc-405gp", "ibm,ebc";
+			dcr-reg = <012 2>;
+			#address-cells = <2>;
+			#size-cells = <1>;
+
+
+			/* The ranges property is supplied by the bootwrapper
+			 * and is based on the firmware's configuration of the
+			 * EBC bridge
+			 */
+			clock-frequency = <0>; /* Filled in by zImage */
+
+			/* NVRAM and RTC */
+			nvrtc@4,200000 {
+				compatible = "ds1742";
+				reg = <4 200000 0>; /* size fixed up by zImage */
+			};
+
+			/* "BCSR" CPLD contains a PCI irq controller */
+			bcsr@4,0 {
+				compatible = "ep405-bcsr";
+				reg = <4 0 10>;
+				interrupt-controller;
+				/* Routing table */
+				irq-routing = [	00	/* SYSERR */
+						01	/* STTM */
+						01	/* RTC */
+						01	/* FENET */
+						02	/* NB PCIIRQ mux ? */
+						03	/* SB Winbond 8259 ? */
+						04	/* Serial Ring */
+						05	/* USB (ep405pc) */
+						06	/* XIRQ 0 */
+						06	/* XIRQ 1 */
+						06	/* XIRQ 2 */
+						06	/* XIRQ 3 */
+						06	/* XIRQ 4 */
+						06	/* XIRQ 5 */
+						06	/* XIRQ 6 */
+						07];	/* Reserved */
+			};
+		};
+
+		PCI0: pci@ec000000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb405gp-pci", "ibm,plb-pci";
+			primary;
+			reg = <eec00000 8	/* Config space access */
+			       eed80000 4	/* IACK */
+			       eed80000 4	/* Special cycle */
+			       ef480000 40>;	/* Internal registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed. Chip supports a second
+			 * IO range but we don't use it for now
+			 */
+			ranges = <02000000 0 80000000 80000000 0 20000000
+				  01000000 0 00000000 e8000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 80000000>;
+
+			/* That's all I know about IRQs on that thing ... */
+			interrupt-map-mask = <f800 0 0 0>;
+			interrupt-map = <
+				/* USB */
+				7000 0 0 0 &UIC0 1e 8 /* IRQ5 */
+			>;
+		};
+	};
+
+	chosen {
+		linux,stdout-path = "/plb/opb/serial@ef600300";
+	};
+};
Index: linux-work/arch/powerpc/boot/4xx.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/4xx.c	2007-12-10 15:52:04.000000000 +1100
+++ linux-work/arch/powerpc/boot/4xx.c	2007-12-10 15:54:23.000000000 +1100
@@ -179,13 +179,16 @@ void ibm40x_dbcr_reset(void)
 #define EMAC_RESET 0x20000000
 void ibm4xx_quiesce_eth(u32 *emac0, u32 *emac1)
 {
-	/* Quiesce the MAL and EMAC(s) since PIBS/OpenBIOS don't do this for us */
+	/* Quiesce the MAL and EMAC(s) since PIBS/OpenBIOS don't
+	 * do this for us
+	 */
 	if (emac0)
 		*emac0 = EMAC_RESET;
 	if (emac1)
 		*emac1 = EMAC_RESET;
 
 	mtdcr(DCRN_MAL0_CFG, MAL_RESET);
+	while (mfdcr(DCRN_MAL0_CFG) & MAL_RESET) {};
 }
 
 /* Read 4xx EBC bus bridge registers to get mappings of the peripheral
@@ -298,3 +301,53 @@ void ibm440ep_fixup_clocks(unsigned int 
 	dt_fixup_clock("/plb/opb/serial@ef600500", uart0);
 	dt_fixup_clock("/plb/opb/serial@ef600600", uart0);
 }
+
+void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk)
+{
+	u32 pllmr = mfdcr(DCRN_CPC0_PLLMR);
+	u32 cpc0_cr0 = mfdcr(DCRN_405_CPC0_CR0);
+	u32 cpc0_cr1 = mfdcr(DCRN_405_CPC0_CR1);
+	u32 cpu, plb, opb, ebc, tb, uart0, uart1, m;
+	u32 fwdv, fbdv, cbdv, opdv, epdv, udiv;
+
+	fwdv = (8 - ((pllmr & 0xe0000000) >> 29));
+	fbdv = (pllmr & 0x1e000000) >> 25;
+	cbdv = ((pllmr & 0x00060000) >> 17) + 1;
+	opdv = ((pllmr & 0x00018000) >> 15) + 1;
+	epdv = ((pllmr & 0x00001800) >> 13) + 2;
+	udiv = ((cpc0_cr0 & 0x3e) >> 1) + 1;
+
+	m = fwdv * fbdv * cbdv;
+
+	cpu = sysclk * m / fwdv;
+	plb = cpu / cbdv;
+	opb = plb / opdv;
+	ebc = plb / epdv;
+
+	if (cpc0_cr0 & 0x80) {
+		/* uart0 uses the external clock */
+		uart0 = ser_clk;
+	} else {
+		uart0 = cpu / udiv;
+	}
+
+	if (cpc0_cr0 & 0x40) {
+		/* uart1 uses the external clock */
+		uart1 = ser_clk;
+	} else {
+		uart1 = cpu / udiv;
+	}
+
+	/* setup the timebase clock to tick at the cpu frequency */
+	cpc0_cr1 = cpc0_cr1 & ~0x00800000;
+	mtdcr(DCRN_405_CPC0_CR1, cpc0_cr1);
+	tb = cpu;
+
+	dt_fixup_cpu_clocks(cpu, tb, 0);
+	dt_fixup_clock("/plb", plb);
+	dt_fixup_clock("/plb/opb", opb);
+	dt_fixup_clock("/plb/ebc", ebc);
+	dt_fixup_clock("/plb/opb/serial@ef600300", uart0);
+	dt_fixup_clock("/plb/opb/serial@ef600400", uart1);
+}
+
Index: linux-work/arch/powerpc/boot/treeboot-walnut.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/treeboot-walnut.c	2007-12-10 15:52:04.000000000 +1100
+++ linux-work/arch/powerpc/boot/treeboot-walnut.c	2007-12-10 15:54:23.000000000 +1100
@@ -20,55 +20,6 @@
 
 BSS_STACK(4096);
 
-void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk)
-{
-	u32 pllmr = mfdcr(DCRN_CPC0_PLLMR);
-	u32 cpc0_cr0 = mfdcr(DCRN_405_CPC0_CR0);
-	u32 cpc0_cr1 = mfdcr(DCRN_405_CPC0_CR1);
-	u32 cpu, plb, opb, ebc, tb, uart0, uart1, m;
-	u32 fwdv, fbdv, cbdv, opdv, epdv, udiv;
-
-	fwdv = (8 - ((pllmr & 0xe0000000) >> 29));
-	fbdv = (pllmr & 0x1e000000) >> 25;
-	cbdv = ((pllmr & 0x00060000) >> 17) + 1;
-	opdv = ((pllmr & 0x00018000) >> 15) + 1;
-	epdv = ((pllmr & 0x00001800) >> 13) + 2;
-	udiv = ((cpc0_cr0 & 0x3e) >> 1) + 1;
-
-	m = fwdv * fbdv * cbdv;
-
-	cpu = sysclk * m / fwdv;
-	plb = cpu / cbdv;
-	opb = plb / opdv;
-	ebc = plb / epdv;
-
-	if (cpc0_cr0 & 0x80) {
-		/* uart0 uses the external clock */
-		uart0 = ser_clk;
-	} else {
-		uart0 = cpu / udiv;
-	}
-
-	if (cpc0_cr0 & 0x40) {
-		/* uart1 uses the external clock */
-		uart1 = ser_clk;
-	} else {
-		uart1 = cpu / udiv;
-	}
-
-	/* setup the timebase clock to tick at the cpu frequency */
-	cpc0_cr1 = cpc0_cr1 & ~0x00800000;
-	mtdcr(DCRN_405_CPC0_CR1, cpc0_cr1);
-	tb = cpu;
-
-	dt_fixup_cpu_clocks(cpu, tb, 0);
-	dt_fixup_clock("/plb", plb);
-	dt_fixup_clock("/plb/opb", opb);
-	dt_fixup_clock("/plb/ebc", ebc);
-	dt_fixup_clock("/plb/opb/serial@ef600300", uart0);
-	dt_fixup_clock("/plb/opb/serial@ef600400", uart1);
-}
-
 static void walnut_flashsel_fixup(void)
 {
 	void *devp, *sram;
Index: linux-work/arch/powerpc/platforms/40x/Kconfig
===================================================================
--- linux-work.orig/arch/powerpc/platforms/40x/Kconfig	2007-12-10 15:52:04.000000000 +1100
+++ linux-work/arch/powerpc/platforms/40x/Kconfig	2007-12-10 15:54:23.000000000 +1100
@@ -14,20 +14,13 @@
 #	help
 #	  This option enables support for the CPCI405 board.
 
-#config EP405
-#	bool "EP405/EP405PC"
-#	depends on 40x
-#	default n
-#	select 405GP
-#	help
-#	  This option enables support for the EP405/EP405PC boards.
-
-#config EP405PC
-#	bool "EP405PC Support"
-#	depends on EP405
-#	default y
-#	help
-#	  This option enables support for the extra features of the EP405PC board.
+config EP405
+	bool "EP405/EP405PC"
+	depends on 40x
+	default n
+	select 405GP
+	help
+	  This option enables support for the EP405/EP405PC boards.
 
 config KILAUEA
 	bool "Kilauea"
Index: linux-work/arch/powerpc/platforms/40x/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/platforms/40x/Makefile	2007-12-10 15:52:04.000000000 +1100
+++ linux-work/arch/powerpc/platforms/40x/Makefile	2007-12-10 15:54:23.000000000 +1100
@@ -1,3 +1,4 @@
 obj-$(CONFIG_KILAUEA)				+= kilauea.o
 obj-$(CONFIG_WALNUT)				+= walnut.o
 obj-$(CONFIG_XILINX_VIRTEX_GENERIC_BOARD)	+= virtex.o
+obj-$(CONFIG_EP405)				+= ep405.o
Index: linux-work/arch/powerpc/platforms/40x/ep405.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/platforms/40x/ep405.c	2007-12-10 15:55:38.000000000 +1100
@@ -0,0 +1,124 @@
+/*
+ * Architecture- / platform-specific boot-time initialization code for
+ * IBM PowerPC 4xx based boards. Adapted from original
+ * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
+ * <dan@net4x.com>.
+ *
+ * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 IBM Corporation
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ *
+ * Adapted to EP405 by Ben. Herrenschmidt <benh@kernel.crashing.org>
+ *
+ * TODO: Wire up the PCI IRQ mux and the southbridge interrupts
+ *
+ * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/pci-bridge.h>
+
+static struct device_node *bcsr_node;
+static void __iomem *bcsr_regs;
+
+/* BCSR registers  */
+#define BCSR_ID			0
+#define BCSR_PCI_CTRL	       	1
+#define BCSR_FLASH_NV_POR_CTRL	2
+#define BCSR_FENET_UART_CTRL	3
+#define BCSR_PCI_IRQ		4
+#define BCSR_XIRQ_SELECT	5
+#define BCSR_XIRQ_ROUTING	6
+#define BCSR_XIRQ_STATUS	7
+#define BCSR_XIRQ_STATUS2	8
+#define BCSR_SW_STAT_LED_CTRL	9
+#define BCSR_GPIO_IRQ_PAR_CTRL	10
+/* there's more, can't be bothered typing them tho */
+
+
+static struct of_device_id ep405_of_bus[] = {
+	{ .compatible = "ibm,plb3", },
+	{ .compatible = "ibm,opb", },
+	{ .compatible = "ibm,ebc", },
+	{},
+};
+
+static int __init ep405_device_probe(void)
+{
+	if (!machine_is(ep405))
+		return 0;
+
+	of_platform_bus_probe(NULL, ep405_of_bus, NULL);
+
+	return 0;
+}
+device_initcall(ep405_device_probe);
+
+static void __init ep405_init_bcsr(void)
+{
+	const u8 *irq_routing;
+	int i;
+
+	/* Find the bloody thing & map it */
+	bcsr_node = of_find_compatible_node(NULL, NULL, "ep405-bcsr");
+	if (bcsr_node == NULL) {
+		printk(KERN_ERR "EP405 BCSR not found !\n");
+		return;
+	}
+	bcsr_regs = of_iomap(bcsr_node, 0);
+	if (bcsr_regs == NULL) {
+		printk(KERN_ERR "EP405 BCSR failed to map !\n");
+		return;
+	}
+
+	/* Get the irq-routing property and apply the routing to the CPLD */
+	irq_routing = of_get_property(bcsr_node, "irq-routing", NULL);
+	if (irq_routing == NULL)
+		return;
+	for (i = 0; i < 16; i++) {
+		u8 irq = irq_routing[i];
+		out_8(bcsr_regs + BCSR_XIRQ_SELECT, i);
+		out_8(bcsr_regs + BCSR_XIRQ_ROUTING, irq);
+	}
+	in_8(bcsr_regs + BCSR_XIRQ_SELECT);
+	mb();
+	out_8(bcsr_regs + BCSR_GPIO_IRQ_PAR_CTRL, 0xfe);
+}
+
+static void __init ep405_setup_arch(void)
+{
+	/* Find & init the BCSR CPLD */
+	ep405_init_bcsr();
+}
+
+static int __init ep405_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "ep405"))
+		return 0;
+
+	return 1;
+}
+
+define_machine(ep405) {
+	.name			= "EP405",
+	.probe			= ep405_probe,
+	.setup_arch		= ep405_setup_arch,
+	.progress		= udbg_progress,
+	.init_IRQ		= uic_init_tree,
+	.get_irq		= uic_get_irq,
+	.calibrate_decr		= generic_calibrate_decr,
+};
Index: linux-work/arch/powerpc/boot/4xx.h
===================================================================
--- linux-work.orig/arch/powerpc/boot/4xx.h	2007-12-10 15:52:04.000000000 +1100
+++ linux-work/arch/powerpc/boot/4xx.h	2007-12-10 15:54:23.000000000 +1100
@@ -18,5 +18,6 @@ void ibm40x_dbcr_reset(void);
 void ibm4xx_quiesce_eth(u32 *emac0, u32 *emac1);
 void ibm4xx_fixup_ebc_ranges(const char *ebc);
 void ibm440ep_fixup_clocks(unsigned int sysclk, unsigned int ser_clk);
+void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk);
 
 #endif /* _POWERPC_BOOT_4XX_H_ */
Index: linux-work/arch/powerpc/boot/wrapper
===================================================================
--- linux-work.orig/arch/powerpc/boot/wrapper	2007-12-10 15:52:04.000000000 +1100
+++ linux-work/arch/powerpc/boot/wrapper	2007-12-10 15:54:23.000000000 +1100
@@ -163,7 +163,7 @@ ps3)
     ksection=.kernel:vmlinux.bin
     isection=.kernel:initrd
     ;;
-ep88xc)
+ep88xc|ep405)
     platformo="$object/fixed-head.o $object/$platform.o"
     binary=y
     ;;
Index: linux-work/arch/powerpc/configs/ep405_defconfig
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/configs/ep405_defconfig	2007-12-10 15:54:23.000000000 +1100
@@ -0,0 +1,951 @@
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.24-rc2
+# Wed Nov 21 16:44:30 2007
+#
+# CONFIG_PPC64 is not set
+
+#
+# Processor support
+#
+# CONFIG_6xx is not set
+# CONFIG_PPC_85xx is not set
+# CONFIG_PPC_8xx is not set
+CONFIG_40x=y
+# CONFIG_44x is not set
+# CONFIG_E200 is not set
+CONFIG_4xx=y
+# CONFIG_PPC_MM_SLICES is not set
+CONFIG_NOT_COHERENT_CACHE=y
+CONFIG_PPC32=y
+CONFIG_WORD_SIZE=32
+CONFIG_PPC_MERGE=y
+CONFIG_MMU=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_IRQ_PER_CPU=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_ARCH_HAS_ILOG2_U32=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+# CONFIG_ARCH_NO_VIRT_TO_BUS is not set
+CONFIG_PPC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_GENERIC_NVRAM=y
+CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
+CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_PPC_OF=y
+CONFIG_OF=y
+CONFIG_PPC_UDBG_16550=y
+# CONFIG_GENERIC_TBSYNC is not set
+CONFIG_AUDIT_ARCH=y
+CONFIG_GENERIC_BUG=y
+# CONFIG_DEFAULT_UIMAGE is not set
+CONFIG_PPC_DCR_NATIVE=y
+# CONFIG_PPC_DCR_MMIO is not set
+CONFIG_PPC_DCR=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+# CONFIG_BSD_PROCESS_ACCT is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_USER_NS is not set
+# CONFIG_AUDIT is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_CGROUPS is not set
+CONFIG_FAIR_GROUP_SCHED=y
+CONFIG_FAIR_USER_SCHED=y
+# CONFIG_FAIR_CGROUP_SCHED is not set
+CONFIG_SYSFS_DEPRECATED=y
+# CONFIG_RELAY is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_KALLSYMS_EXTRA_PASS=y
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_ANON_INODES=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLUB_DEBUG=y
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+# CONFIG_SLOB is not set
+CONFIG_RT_MUTEXES=y
+# CONFIG_TINY_SHMEM is not set
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_KMOD=y
+CONFIG_BLOCK=y
+CONFIG_LBD=y
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_LSF is not set
+# CONFIG_BLK_DEV_BSG is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+CONFIG_DEFAULT_AS=y
+# CONFIG_DEFAULT_DEADLINE is not set
+# CONFIG_DEFAULT_CFQ is not set
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="anticipatory"
+
+#
+# Platform support
+#
+# CONFIG_PPC_MPC52xx is not set
+# CONFIG_PPC_MPC5200 is not set
+# CONFIG_PPC_CELL is not set
+# CONFIG_PPC_CELL_NATIVE is not set
+# CONFIG_PQ2ADS is not set
+CONFIG_EP405=y
+# CONFIG_KILAUEA is not set
+# CONFIG_WALNUT is not set
+# CONFIG_XILINX_VIRTEX_GENERIC_BOARD is not set
+CONFIG_405GP=y
+CONFIG_IBM405_ERR77=y
+CONFIG_IBM405_ERR51=y
+# CONFIG_MPIC is not set
+# CONFIG_MPIC_WEIRD is not set
+# CONFIG_PPC_I8259 is not set
+# CONFIG_PPC_RTAS is not set
+# CONFIG_MMIO_NVRAM is not set
+# CONFIG_PPC_MPC106 is not set
+# CONFIG_PPC_970_NAP is not set
+# CONFIG_PPC_INDIRECT_IO is not set
+# CONFIG_GENERIC_IOMAP is not set
+# CONFIG_CPU_FREQ is not set
+# CONFIG_CPM2 is not set
+# CONFIG_FSL_ULI1575 is not set
+
+#
+# Kernel options
+#
+# CONFIG_HIGHMEM is not set
+# CONFIG_TICK_ONESHOT is not set
+# CONFIG_NO_HZ is not set
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+# CONFIG_HZ_100 is not set
+CONFIG_HZ_250=y
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_1000 is not set
+CONFIG_HZ=250
+CONFIG_PREEMPT_NONE=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
+# CONFIG_PREEMPT is not set
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_MISC is not set
+# CONFIG_MATH_EMULATION is not set
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+CONFIG_ARCH_FLATMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_SPARSEMEM_STATIC is not set
+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_RESOURCES_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=1
+CONFIG_BOUNCE=y
+CONFIG_VIRT_TO_BUS=y
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_CMDLINE_BOOL is not set
+# CONFIG_PM is not set
+CONFIG_SUSPEND_UP_POSSIBLE=y
+CONFIG_HIBERNATION_UP_POSSIBLE=y
+CONFIG_SECCOMP=y
+CONFIG_WANT_DEVICE_TREE=y
+CONFIG_DEVICE_TREE="ep405.dts"
+CONFIG_ISA_DMA_API=y
+
+#
+# Bus options
+#
+CONFIG_ZONE_DMA=y
+CONFIG_PPC_INDIRECT_PCI=y
+CONFIG_PCI=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_SYSCALL=y
+# CONFIG_PCIEPORTBUS is not set
+CONFIG_ARCH_SUPPORTS_MSI=y
+# CONFIG_PCI_MSI is not set
+CONFIG_PCI_LEGACY=y
+# CONFIG_PCI_DEBUG is not set
+# CONFIG_PCCARD is not set
+# CONFIG_HOTPLUG_PCI is not set
+
+#
+# Advanced setup
+#
+# CONFIG_ADVANCED_OPTIONS is not set
+
+#
+# Default settings for advanced configuration options are used
+#
+CONFIG_HIGHMEM_START=0xfe000000
+CONFIG_LOWMEM_SIZE=0x30000000
+CONFIG_KERNEL_START=0xc0000000
+CONFIG_TASK_SIZE=0xc0000000
+CONFIG_CONSISTENT_START=0xff100000
+CONFIG_CONSISTENT_SIZE=0x00200000
+CONFIG_BOOT_LOAD=0x00400000
+
+#
+# Networking
+#
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+# CONFIG_PACKET_MMAP is not set
+CONFIG_UNIX=y
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_IP_PNP_RARP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_INET6_XFRM_TUNNEL is not set
+# CONFIG_INET6_TUNNEL is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_SCHED is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+
+#
+# Wireless
+#
+# CONFIG_CFG80211 is not set
+# CONFIG_WIRELESS_EXT is not set
+# CONFIG_MAC80211 is not set
+# CONFIG_IEEE80211 is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+CONFIG_CONNECTOR=y
+CONFIG_PROC_EVENTS=y
+CONFIG_MTD=y
+# CONFIG_MTD_DEBUG is not set
+# CONFIG_MTD_CONCAT is not set
+CONFIG_MTD_PARTITIONS=y
+# CONFIG_MTD_REDBOOT_PARTS is not set
+CONFIG_MTD_CMDLINE_PARTS=y
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLKDEVS=m
+CONFIG_MTD_BLOCK=m
+# CONFIG_MTD_BLOCK_RO is not set
+# CONFIG_FTL is not set
+# CONFIG_NFTL is not set
+# CONFIG_INFTL is not set
+# CONFIG_RFD_FTL is not set
+# CONFIG_SSFDC is not set
+# CONFIG_MTD_OOPS is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+CONFIG_MTD_CFI=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_GEN_PROBE=y
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+# CONFIG_MTD_CFI_I4 is not set
+# CONFIG_MTD_CFI_I8 is not set
+# CONFIG_MTD_CFI_INTELEXT is not set
+CONFIG_MTD_CFI_AMDSTD=y
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+# CONFIG_MTD_RAM is not set
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_PHYSMAP_OF=y
+# CONFIG_MTD_INTEL_VR_NOR is not set
+# CONFIG_MTD_PLATRAM is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_PMC551 is not set
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+# CONFIG_MTD_BLOCK2MTD is not set
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+# CONFIG_MTD_NAND is not set
+# CONFIG_MTD_ONENAND is not set
+
+#
+# UBI - Unsorted block images
+#
+# CONFIG_MTD_UBI is not set
+CONFIG_OF_DEVICE=y
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_FD is not set
+# CONFIG_BLK_CPQ_DA is not set
+# CONFIG_BLK_CPQ_CISS_DA is not set
+# CONFIG_BLK_DEV_DAC960 is not set
+# CONFIG_BLK_DEV_UMEM is not set
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+# CONFIG_BLK_DEV_NBD is not set
+# CONFIG_BLK_DEV_SX8 is not set
+# CONFIG_BLK_DEV_UB is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=35000
+CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_XILINX_SYSACE is not set
+CONFIG_MISC_DEVICES=y
+# CONFIG_PHANTOM is not set
+# CONFIG_EEPROM_93CX6 is not set
+# CONFIG_SGI_IOC4 is not set
+# CONFIG_TIFM_CORE is not set
+# CONFIG_IDE is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_ATA is not set
+# CONFIG_MD is not set
+# CONFIG_FUSION is not set
+
+#
+# IEEE 1394 (FireWire) support
+#
+# CONFIG_FIREWIRE is not set
+# CONFIG_IEEE1394 is not set
+# CONFIG_I2O is not set
+# CONFIG_MACINTOSH_DRIVERS is not set
+CONFIG_NETDEVICES=y
+# CONFIG_NETDEVICES_MULTIQUEUE is not set
+# CONFIG_DUMMY is not set
+# CONFIG_BONDING is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_EQUALIZER is not set
+# CONFIG_TUN is not set
+# CONFIG_VETH is not set
+# CONFIG_IP1000 is not set
+# CONFIG_ARCNET is not set
+# CONFIG_PHYLIB is not set
+CONFIG_NET_ETHERNET=y
+# CONFIG_MII is not set
+# CONFIG_HAPPYMEAL is not set
+# CONFIG_SUNGEM is not set
+# CONFIG_CASSINI is not set
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_TULIP is not set
+# CONFIG_HP100 is not set
+CONFIG_IBM_NEW_EMAC=y
+CONFIG_IBM_NEW_EMAC_RXB=128
+CONFIG_IBM_NEW_EMAC_TXB=64
+CONFIG_IBM_NEW_EMAC_POLL_WEIGHT=32
+CONFIG_IBM_NEW_EMAC_RX_COPY_THRESHOLD=256
+CONFIG_IBM_NEW_EMAC_RX_SKB_HEADROOM=0
+# CONFIG_IBM_NEW_EMAC_DEBUG is not set
+CONFIG_IBM_NEW_EMAC_ZMII=y
+# CONFIG_IBM_NEW_EMAC_RGMII is not set
+# CONFIG_IBM_NEW_EMAC_TAH is not set
+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
+# CONFIG_NET_PCI is not set
+# CONFIG_B44 is not set
+CONFIG_NETDEV_1000=y
+# CONFIG_ACENIC is not set
+# CONFIG_DL2K is not set
+# CONFIG_E1000 is not set
+# CONFIG_E1000E is not set
+# CONFIG_NS83820 is not set
+# CONFIG_HAMACHI is not set
+# CONFIG_YELLOWFIN is not set
+# CONFIG_R8169 is not set
+# CONFIG_SIS190 is not set
+# CONFIG_SKGE is not set
+# CONFIG_SKY2 is not set
+# CONFIG_SK98LIN is not set
+# CONFIG_VIA_VELOCITY is not set
+# CONFIG_TIGON3 is not set
+# CONFIG_BNX2 is not set
+# CONFIG_QLA3XXX is not set
+# CONFIG_ATL1 is not set
+CONFIG_NETDEV_10000=y
+# CONFIG_CHELSIO_T1 is not set
+# CONFIG_CHELSIO_T3 is not set
+# CONFIG_IXGBE is not set
+# CONFIG_IXGB is not set
+# CONFIG_S2IO is not set
+# CONFIG_MYRI10GE is not set
+# CONFIG_NETXEN_NIC is not set
+# CONFIG_NIU is not set
+# CONFIG_MLX4_CORE is not set
+# CONFIG_TEHUTI is not set
+# CONFIG_TR is not set
+
+#
+# Wireless LAN
+#
+# CONFIG_WLAN_PRE80211 is not set
+# CONFIG_WLAN_80211 is not set
+
+#
+# USB Network Adapters
+#
+# CONFIG_USB_CATC is not set
+# CONFIG_USB_KAWETH is not set
+# CONFIG_USB_PEGASUS is not set
+# CONFIG_USB_RTL8150 is not set
+# CONFIG_USB_USBNET is not set
+# CONFIG_WAN is not set
+# CONFIG_FDDI is not set
+# CONFIG_HIPPI is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_SHAPER is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+# CONFIG_INPUT is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+# CONFIG_SERIAL_NONSTANDARD is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_PCI=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_EXTENDED=y
+# CONFIG_SERIAL_8250_MANY_PORTS is not set
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+# CONFIG_SERIAL_8250_DETECT_IRQ is not set
+# CONFIG_SERIAL_8250_RSA is not set
+
+#
+# Non-8250 serial port support
+#
+# CONFIG_SERIAL_UARTLITE is not set
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_JSM is not set
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_NVRAM is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+# CONFIG_APPLICOM is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+CONFIG_DEVPORT=y
+# CONFIG_I2C is not set
+
+#
+# SPI support
+#
+# CONFIG_SPI is not set
+# CONFIG_SPI_MASTER is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_WATCHDOG is not set
+
+#
+# Sonics Silicon Backplane
+#
+CONFIG_SSB_POSSIBLE=y
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_SM501 is not set
+
+#
+# Multimedia devices
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_DAB is not set
+
+#
+# Graphics support
+#
+# CONFIG_AGP is not set
+# CONFIG_DRM is not set
+# CONFIG_VGASTATE is not set
+CONFIG_VIDEO_OUTPUT_CONTROL=m
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+
+#
+# Sound
+#
+# CONFIG_SOUND is not set
+CONFIG_USB_SUPPORT=y
+CONFIG_USB_ARCH_HAS_HCD=y
+CONFIG_USB_ARCH_HAS_OHCI=y
+CONFIG_USB_ARCH_HAS_EHCI=y
+CONFIG_USB=y
+# CONFIG_USB_DEBUG is not set
+
+#
+# Miscellaneous USB options
+#
+CONFIG_USB_DEVICEFS=y
+CONFIG_USB_DEVICE_CLASS=y
+# CONFIG_USB_DYNAMIC_MINORS is not set
+# CONFIG_USB_OTG is not set
+
+#
+# USB Host Controller Drivers
+#
+# CONFIG_USB_EHCI_HCD is not set
+# CONFIG_USB_ISP116X_HCD is not set
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_HCD_PPC_OF=y
+CONFIG_USB_OHCI_HCD_PPC_OF_BE=y
+CONFIG_USB_OHCI_HCD_PPC_OF_LE=y
+CONFIG_USB_OHCI_HCD_PCI=y
+CONFIG_USB_OHCI_BIG_ENDIAN_DESC=y
+CONFIG_USB_OHCI_BIG_ENDIAN_MMIO=y
+CONFIG_USB_OHCI_LITTLE_ENDIAN=y
+# CONFIG_USB_UHCI_HCD is not set
+# CONFIG_USB_SL811_HCD is not set
+# CONFIG_USB_R8A66597_HCD is not set
+
+#
+# USB Device Class drivers
+#
+# CONFIG_USB_ACM is not set
+# CONFIG_USB_PRINTER is not set
+
+#
+# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
+#
+
+#
+# may also be needed; see USB_STORAGE Help for more information
+#
+# CONFIG_USB_LIBUSUAL is not set
+
+#
+# USB Imaging devices
+#
+# CONFIG_USB_MDC800 is not set
+CONFIG_USB_MON=y
+
+#
+# USB port drivers
+#
+
+#
+# USB Serial Converter support
+#
+# CONFIG_USB_SERIAL is not set
+
+#
+# USB Miscellaneous drivers
+#
+# CONFIG_USB_EMI62 is not set
+# CONFIG_USB_EMI26 is not set
+# CONFIG_USB_ADUTUX is not set
+# CONFIG_USB_AUERSWALD is not set
+# CONFIG_USB_RIO500 is not set
+# CONFIG_USB_LEGOTOWER is not set
+# CONFIG_USB_LCD is not set
+# CONFIG_USB_BERRY_CHARGE is not set
+# CONFIG_USB_LED is not set
+# CONFIG_USB_CYPRESS_CY7C63 is not set
+# CONFIG_USB_CYTHERM is not set
+# CONFIG_USB_PHIDGET is not set
+# CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_FTDI_ELAN is not set
+# CONFIG_USB_APPLEDISPLAY is not set
+# CONFIG_USB_LD is not set
+# CONFIG_USB_TRANCEVIBRATOR is not set
+# CONFIG_USB_IOWARRIOR is not set
+# CONFIG_USB_TEST is not set
+
+#
+# USB DSL modem support
+#
+
+#
+# USB Gadget Support
+#
+# CONFIG_USB_GADGET is not set
+# CONFIG_MMC is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_INFINIBAND is not set
+# CONFIG_EDAC is not set
+# CONFIG_RTC_CLASS is not set
+
+#
+# Userspace I/O
+#
+# CONFIG_UIO is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_EXT4DEV_FS is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_FS_POSIX_ACL is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
+# CONFIG_OCFS2_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_ROMFS_FS is not set
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+CONFIG_DNOTIFY=y
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+
+#
+# Miscellaneous filesystems
+#
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_JFFS2_FS is not set
+CONFIG_CRAMFS=y
+# CONFIG_VXFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+# CONFIG_NFS_V4 is not set
+# CONFIG_NFS_DIRECTIO is not set
+# CONFIG_NFSD is not set
+CONFIG_ROOT_NFS=y
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+# CONFIG_SUNRPC_BIND34 is not set
+# CONFIG_RPCSEC_GSS_KRB5 is not set
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+# CONFIG_UCC_SLOW is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_PLIST=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
+CONFIG_INSTRUMENTATION=y
+# CONFIG_PROFILING is not set
+# CONFIG_KPROBES is not set
+# CONFIG_MARKERS is not set
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+CONFIG_DETECT_SOFTLOCKUP=y
+CONFIG_SCHED_DEBUG=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_SLUB_DEBUG_ON is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+# CONFIG_DEBUG_INFO is not set
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+CONFIG_FORCED_INLINING=y
+# CONFIG_BOOT_PRINTK_DELAY is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_SAMPLES is not set
+# CONFIG_DEBUG_STACKOVERFLOW is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_PAGEALLOC is not set
+# CONFIG_DEBUGGER is not set
+# CONFIG_BDI_SWITCH is not set
+# CONFIG_PPC_EARLY_DEBUG is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+CONFIG_CRYPTO=y
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_MANAGER=y
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_MD4 is not set
+CONFIG_CRYPTO_MD5=y
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_WP512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_GF128MUL is not set
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_PCBC=y
+# CONFIG_CRYPTO_LRW is not set
+# CONFIG_CRYPTO_XTS is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_CRC32C is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_TEST is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+CONFIG_CRYPTO_HW=y
+# CONFIG_PPC_CLOCK is not set

[PATCH 17/25] powerpc: Add PCI to Walnut platform

[Benjamin Herrenschmidt]

This wires up the 4xx PCI support & device-tree bits for the
405GP based Walnut platform.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

This one is untested, haven't had time to dig my walnut and put it
back into working condition. Josh, can you verify that IRQs are
working (routing is correct ?) Thanks !

 arch/powerpc/boot/dts/walnut.dts |   39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

Index: linux-work/arch/powerpc/boot/dts/walnut.dts
===================================================================
--- linux-work.orig/arch/powerpc/boot/dts/walnut.dts	2007-11-13 11:39:44.000000000 +1100
+++ linux-work/arch/powerpc/boot/dts/walnut.dts	2007-11-27 18:28:07.000000000 +1100
@@ -190,6 +190,45 @@
 				virtual-reg = <f0300005>;
 			};
 		};
+
+		PCI0: pci@ec000000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb405gp-pci", "ibm,plb-pci";
+			primary;
+			reg = <eec00000 8	/* Config space access */
+			       eed80000 4	/* IACK */
+			       eed80000 4	/* Special cycle */
+			       ef480000 40>;	/* Internal registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed. Chip supports a second
+			 * IO range but we don't use it for now
+			 */
+			ranges = <02000000 0 80000000 80000000 0 20000000
+				  01000000 0 00000000 e8000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 80000000>;
+
+			/* Walnut has all 4 IRQ pins tied together per slot */
+			interrupt-map-mask = <f800 0 0 0>;
+			interrupt-map = <
+				/* IDSEL 1 */
+				0800 0 0 0 &UIC0 1c 8
+
+				/* IDSEL 2 */
+				1000 0 0 0 &UIC0 1d 8
+
+				/* IDSEL 3 */
+				1800 0 0 0 &UIC0 1e 8
+
+				/* IDSEL 4 */
+				2000 0 0 0 &UIC0 1f 8
+			>;
+		};
 	};
 
 	chosen {

[PATCH 18/25] powerpc: Base support for 440GX Taishan eval board

[Benjamin Herrenschmidt]

From: Hugh Blemings <hugh@blemings.org>


Signed-off-by: Hugh Blemings <hugh@blemings.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

This needs a bit of cleanup still, probably not to be merged as-is
just yet (like using mtdcri/mfdcri for CPR access).

 arch/powerpc/Kconfig.debug           |    6 
 arch/powerpc/boot/Makefile           |    5 
 arch/powerpc/boot/cuboot-taishan.c   |   56 ++++
 arch/powerpc/boot/dcr.h              |   27 ++
 arch/powerpc/boot/dts/taishan.dts    |  414 +++++++++++++++++++++++++++++++++++
 arch/powerpc/platforms/44x/Kconfig   |   12 +
 arch/powerpc/platforms/44x/Makefile  |    1 
 arch/powerpc/platforms/44x/taishan.c |   74 ++++++
 8 files changed, 593 insertions(+), 2 deletions(-)

Index: linux-work/arch/powerpc/boot/dcr.h
===================================================================
--- linux-work.orig/arch/powerpc/boot/dcr.h	2007-12-03 11:48:01.000000000 +1100
+++ linux-work/arch/powerpc/boot/dcr.h	2007-12-03 13:53:03.000000000 +1100
@@ -139,4 +139,31 @@ static const unsigned long sdram_bxcr[] 
 #define DCRN_405_CPC0_CR0 0xb1
 #define DCRN_405_CPC0_CR1 0xb2
 
+
+/* 440GX Clock control etc */
+
+
+#define DCRN_CPR0_CLKUPD				0x020
+#define DCRN_CPR0_PLLC					0x040
+#define DCRN_CPR0_PLLD					0x060
+#define DCRN_CPR0_PRIMAD				0x080
+#define DCRN_CPR0_PRIMBD				0x0a0
+#define DCRN_CPR0_OPBD					0x0c0
+#define DCRN_CPR0_PERD					0x0e0
+#define DCRN_CPR0_MALD					0x100
+
+/* CPRs read/write helper macros - based off include/asm-ppc/ibm44x.h */
+
+#define DCRN_CPR0_CFGADDR				0xc
+#define DCRN_CPR0_CFGDATA				0xd
+
+#define CPR0_READ(offset) ({\
+	mtdcr(DCRN_CPR0_CFGADDR, offset); \
+	mfdcr(DCRN_CPR0_CFGDATA); })
+#define CPR0_WRITE(offset, data) ({\
+	mtdcr(DCRN_CPR0_CFGADDR, offset); \
+	mtdcr(DCRN_CPR0_CFGDATA, data); })
+
+
+
 #endif	/* _PPC_BOOT_DCR_H_ */
Index: linux-work/arch/powerpc/boot/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/boot/Makefile	2007-12-03 12:58:45.000000000 +1100
+++ linux-work/arch/powerpc/boot/Makefile	2007-12-03 13:53:41.000000000 +1100
@@ -37,8 +37,10 @@ BOOTCFLAGS	+= -I$(obj) -I$(srctree)/$(ob
 
 $(obj)/4xx.o: BOOTCFLAGS += -mcpu=440
 $(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
+$(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=440
 $(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405
 
+
 zlib       := inffast.c inflate.c inftrees.c
 zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
 zliblinuxheader := zlib.h zconf.h zutil.h
@@ -56,7 +58,7 @@ src-plat := of.c cuboot-52xx.c cuboot-83
 		cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
 		ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
 		cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c \
-		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c
+		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c cuboot-taishan.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -160,6 +162,7 @@ image-$(CONFIG_EBONY)			+= treeImage.ebo
 image-$(CONFIG_BAMBOO)			+= treeImage.bamboo cuImage.bamboo
 image-$(CONFIG_SEQUOIA)			+= cuImage.sequoia
 image-$(CONFIG_WALNUT)			+= treeImage.walnut
+image-$(CONFIG_TAISHAN)			+= cuImage.taishan
 endif
 
 # For 32-bit powermacs, build the COFF and miboot images
Index: linux-work/arch/powerpc/Kconfig.debug
===================================================================
--- linux-work.orig/arch/powerpc/Kconfig.debug	2007-12-03 12:58:33.000000000 +1100
+++ linux-work/arch/powerpc/Kconfig.debug	2007-12-03 13:39:01.000000000 +1100
@@ -225,7 +225,8 @@ config PPC_EARLY_DEBUG_44x
 	depends on 44x
 	help
 	  Select this to enable early debugging for IBM 44x chips via the
-	  inbuilt serial port.
+	  inbuilt serial port.  If you enable this, ensure you set
+          PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
 
 config PPC_EARLY_DEBUG_40x
 	bool "Early serial debugging for IBM/AMCC 40x CPUs"
@@ -250,6 +251,9 @@ config PPC_EARLY_DEBUG_44x_PHYSLOW
 	hex "Low 32 bits of early debug UART physical address"
 	depends on PPC_EARLY_DEBUG_44x
 	default "0x40000200"
+	help
+	  You probably want 0x40000200 for ebony boards and
+          0x40000300 for taishan
 
 config PPC_EARLY_DEBUG_44x_PHYSHIGH
 	hex "EPRN of early debug UART physical address"
Index: linux-work/arch/powerpc/platforms/44x/Kconfig
===================================================================
--- linux-work.orig/arch/powerpc/platforms/44x/Kconfig	2007-12-03 12:05:58.000000000 +1100
+++ linux-work/arch/powerpc/platforms/44x/Kconfig	2007-12-03 13:52:59.000000000 +1100
@@ -22,6 +22,14 @@ config SEQUOIA
 	help
 	  This option enables support for the AMCC PPC440EPX evaluation board.
 
+config TAISHAN
+	bool "Taishan"
+	depends on 44x
+	default n
+	select 440GX
+	help
+	  This option enables support for the IBM PPC440GX "Taishan" evaluation board.
+
 #config LUAN
 #	bool "Luan"
 #	depends on 44x
@@ -58,6 +66,10 @@ config 440GP
 
 config 440GX
 	bool
+        select IBM_NEW_EMAC_EMAC4
+	select IBM_NEW_EMAC_RGMII
+        select IBM_NEW_EMAC_ZMII #test only
+        select IBM_NEW_EMAC_TAH  #test only
 
 config 440SP
 	bool
Index: linux-work/arch/powerpc/platforms/44x/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/platforms/44x/Makefile	2007-12-03 11:48:01.000000000 +1100
+++ linux-work/arch/powerpc/platforms/44x/Makefile	2007-12-03 13:52:59.000000000 +1100
@@ -1,4 +1,5 @@
 obj-$(CONFIG_44x)	:= misc_44x.o
 obj-$(CONFIG_EBONY)	+= ebony.o
+obj-$(CONFIG_TAISHAN)	+= taishan.o
 obj-$(CONFIG_BAMBOO) += bamboo.o
 obj-$(CONFIG_SEQUOIA)	+= sequoia.o
Index: linux-work/arch/powerpc/platforms/44x/taishan.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/platforms/44x/taishan.c	2007-12-03 13:39:01.000000000 +1100
@@ -0,0 +1,74 @@
+/*
+ * Taishan board specific routines based off ebony.c code
+ * original copyrights below
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003-2005 Zultys Technologies
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ *
+ * Modified from ebony.c for taishan:
+ * Copyright 2007 Hugh Blemings <hugh@au.ibm.com>, IBM Corporation.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/pci-bridge.h>
+
+#include "44x.h"
+
+static struct of_device_id taishan_of_bus[] = {
+	{ .compatible = "ibm,plb4", },
+	{ .compatible = "ibm,opb", },
+	{ .compatible = "ibm,ebc", },
+	{},
+};
+
+static int __init taishan_device_probe(void)
+{
+	if (!machine_is(taishan))
+		return 0;
+
+	of_platform_bus_probe(NULL, taishan_of_bus, NULL);
+
+	return 0;
+}
+device_initcall(taishan_device_probe);
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init taishan_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "ibm,taishan"))
+		return 0;
+
+	return 1;
+}
+
+define_machine(taishan) {
+	.name			= "Taishan",
+	.probe			= taishan_probe,
+	.progress		= udbg_progress,
+	.init_IRQ		= uic_init_tree,
+	.get_irq		= uic_get_irq,
+	.restart		= ppc44x_reset_system,
+	.calibrate_decr		= generic_calibrate_decr,
+};
Index: linux-work/arch/powerpc/boot/dts/taishan.dts
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/boot/dts/taishan.dts	2007-12-03 13:39:01.000000000 +1100
@@ -0,0 +1,414 @@
+/*
+ * Device Tree Source for IBM/AMCC Taishan
+ *
+ * Copyright 2007 IBM Corp.
+ * Hugh Blemings <hugh@au.ibm.com> based off code by
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>, David Gibson <dwg@au1.ibm.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without
+ * any warranty of any kind, whether express or implied.
+ *
+ * To build:
+ *   dtc -I dts -O asm -o taishan.S -b 0 taishan.dts
+ *   dtc -I dts -O dtb -o taishan.dtb -b 0 taishan.dts
+ */
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <1>;
+	model = "ibm,taishan";
+	compatible = "ibm,taishan";
+	dcr-parent = <&/cpus/PowerPC,440GX@0>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,440GX@0 {
+			device_type = "cpu";
+			reg = <0>;
+			clock-frequency = <2FAF0800>; // 800MHz
+			timebase-frequency = <0>; // Filled in by zImage
+			i-cache-line-size = <32>;
+			d-cache-line-size = <32>;
+			i-cache-size = <8000>; /* 32 kB */
+			d-cache-size = <8000>; /* 32 kB */
+			dcr-controller;
+			dcr-access-method = "native";
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0 0 0>; // Filled in by zImage
+	};
+
+
+	UICB0: interrupt-controller-base {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <3>;
+		dcr-reg = <200 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+	};
+
+
+	UIC0: interrupt-controller0 {
+		compatible = "ibm,uic-440gx", "ibm,uic"; /* Should be AMCC ? */
+		interrupt-controller;
+		cell-index = <0>;
+		dcr-reg = <0c0 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <01 4 00 4>; /* cascade - first non-critical */
+		interrupt-parent = <&UICB0>;
+
+	};
+
+	UIC1: interrupt-controller1 {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <1>;
+		dcr-reg = <0d0 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <03 4 02 4>; /* cascade */
+		interrupt-parent = <&UICB0>;
+	};
+
+	UIC2: interrupt-controller2 {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <2>; /* was 1 */
+		dcr-reg = <210 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <05 4 04 4>; /* cascade */
+		interrupt-parent = <&UICB0>;
+	};
+
+
+	CPC0: cpc {
+		compatible = "ibm,cpc-440gp";
+		dcr-reg = <0b0 003 0e0 010>;
+		// FIXME: anything else?
+	};
+
+	plb {
+		compatible = "ibm,plb-440gx", "ibm,plb4";
+		#address-cells = <2>;
+		#size-cells = <1>;
+		ranges;
+		clock-frequency = <9896800>; // 160MHz
+
+		SDRAM0: memory-controller {
+			compatible = "ibm,sdram-440gp";
+			dcr-reg = <010 2>;
+			// FIXME: anything else?
+		};
+
+		SRAM0: sram {
+			compatible = "ibm,sram-440gp";
+			dcr-reg = <020 8 00a 1>;
+		};
+
+		DMA0: dma {
+			// FIXME: ???
+			compatible = "ibm,dma-440gp";
+			dcr-reg = <100 027>;
+		};
+
+		MAL0: mcmal {
+			compatible = "ibm,mcmal-440gx", "ibm,mcmal2";
+			dcr-reg = <180 62>;
+			num-tx-chans = <4>;
+			num-rx-chans = <4>;
+			interrupt-parent = <&MAL0>;
+			interrupts = <0 1 2 3 4>;
+			#interrupt-cells = <1>;
+			#address-cells = <0>;
+			#size-cells = <0>;
+			interrupt-map = </*TXEOB*/ 0 &UIC0 a 4
+					 /*RXEOB*/ 1 &UIC0 b 4
+					 /*SERR*/  2 &UIC1 0 4
+					 /*TXDE*/  3 &UIC1 1 4
+					 /*RXDE*/  4 &UIC1 2 4>;
+			interrupt-map-mask = <ffffffff>;
+		};
+
+		POB0: opb {
+			compatible = "ibm,opb-440gx", "ibm,opb";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			/* Wish there was a nicer way of specifying a full 32-bit
+			   range */
+			ranges = <00000000 1 00000000 80000000
+				  80000000 1 80000000 80000000>;
+			dcr-reg = <090 00b>;
+			interrupt-parent = <&UIC1>;
+			interrupts = <7 4>;
+			clock-frequency = <4C4B400>; // 80MHz
+
+
+			/* Put EBC0 back **FIXME** */
+
+			EBC0: ebc {
+				compatible = "ibm,ebc-440gx", "ibm,ebc";
+				dcr-reg = <012 2>;
+				#address-cells = <2>;
+				#size-cells = <1>;
+				clock-frequency = <4C4B400>; // 80MHz
+				// ranges property is supplied by zImage
+				// based on firmware's configuration of the
+				// EBC bridge
+				interrupts = <5 4>;
+				interrupt-parent = <&UIC1>;
+
+//				small-flash@0,80000 {
+//					device_type = "rom";
+//					compatible = "direct-mapped";
+//					probe-type = "JEDEC";
+//					bank-width = <1>;
+//					partitions = <0 80000>;
+//					partition-names = "OpenBIOS";
+//					reg = <0 80000 80000>;
+//				};
+
+//				ds1743@1,0 {
+//					/* NVRAM & RTC */
+//					compatible = "ds1743";
+//					reg = <1 0 2000>;
+//				};
+
+//				large-flash@2,0 {
+//					device_type = "rom";
+//					compatible = "direct-mapped";
+//					probe-type = "JEDEC";
+//					bank-width = <1>;
+//					partitions = <0 380000
+//						      380000 80000>;
+//					partition-names = "fs", "firmware";
+//					reg = <2 0 400000>;
+//				};
+
+//				ir@3,0 {
+//					reg = <3 0 10>;
+//				};
+
+//				fpga@7,0 {
+//					compatible = "Ebony-FPGA";
+//					reg = <7 0 10>;
+//				};
+			};
+
+
+
+			UART0: serial@40000200 {
+				device_type = "serial";
+				compatible = "ns16550";
+				reg = <40000200 8>;
+				virtual-reg = <e0000200>;
+ 				clock-frequency = <A8C000>;
+				current-speed = <1C200>; /* 115200 */
+				interrupt-parent = <&UIC0>;
+				interrupts = <0 4>;
+			};
+
+			UART1: serial@40000300 {
+				device_type = "serial";
+				compatible = "ns16550";
+				reg = <40000300 8>;
+				virtual-reg = <e0000300>;
+				clock-frequency = <A8C000>;
+				current-speed = <1C200>; /* 115200 */
+				interrupt-parent = <&UIC0>;
+				interrupts = <1 4>;
+			};
+
+			IIC0: i2c@40000400 {
+				/* FIXME */
+				device_type = "i2c";
+				compatible = "ibm,iic-440gp", "ibm,iic";
+				reg = <40000400 14>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <2 4>;
+			};
+			IIC1: i2c@40000500 {
+				/* FIXME */
+				device_type = "i2c";
+				compatible = "ibm,iic-440gp", "ibm,iic";
+				reg = <40000500 14>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <3 4>;
+			};
+
+			GPIO0: gpio@40000700 {
+				/* FIXME */
+				compatible = "ibm,gpio-440gp";
+				reg = <40000700 20>;
+			};
+
+			ZMII0: emac-zmii@40000780 {
+				device_type = "zgmii-interface";
+				compatible = "ibm,zmii-440gx", "ibm,zmii";
+				reg = <40000780 c>;
+			};
+
+			RGMII0: emac-rgmii@40000790 {
+				device_type = "rgmii-interface";
+				compatible = "ibm,rgmii";
+				reg = <40000790 8>;
+			};
+
+
+			EMAC0: ethernet@40000800 {
+				unused = <1>;
+				linux,network-index = <2>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC1>;
+				interrupts = <1c 4 1d 4>;
+				reg = <40000800 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <0>;
+				mal-rx-channel = <0>;
+				cell-index = <0>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rmii";
+				phy-map = <00000001>;
+				zmii-device = <&ZMII0>;
+				zmii-channel = <0>;
+			};
+		 	EMAC1: ethernet@40000900 {
+				unused = <1>;
+				linux,network-index = <3>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC1>;
+				interrupts = <1e 4 1f 4>;
+				reg = <40000900 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <1>;
+				mal-rx-channel = <1>;
+				cell-index = <1>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rmii";
+				phy-map = <00000001>;
+ 				zmii-device = <&ZMII0>;
+				zmii-channel = <1>;
+			};
+
+		 	EMAC2: ethernet@40000c00 {
+				linux,network-index = <0>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC2>;
+				interrupts = <0 4 1 4>;
+				reg = <40000c00 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <2>;
+				mal-rx-channel = <2>;
+				cell-index = <2>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rgmii";
+				phy-map = <00000001>;
+				rgmii-device = <&RGMII0>;
+				rgmii-channel = <0>;
+ 				zmii-device = <&ZMII0>;
+				zmii-channel = <2>;
+			};
+
+		 	EMAC3: ethernet@40000e00 {
+				linux,network-index = <1>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC2>;
+				interrupts = <2 4 3 4>;
+				reg = <40000e00 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <3>;
+				mal-rx-channel = <3>;
+				cell-index = <3>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rgmii";
+				phy-map = <00000003>;
+				rgmii-device = <&RGMII0>;
+				rgmii-channel = <1>;
+ 				zmii-device = <&ZMII0>;
+				zmii-channel = <3>;
+			};
+
+
+			GPT0: gpt@40000a00 {
+				/* FIXME */
+				reg = <40000a00 d4>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <12 4 13 4 14 4 15 4 16 4>;
+			};
+
+		};
+
+		PCIX0: pci@20ec00000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb440gp-pcix", "ibm,plb-pcix";
+			primary;
+			large-inbound-windows;
+			enable-msi-hole;
+			reg = <2 0ec00000   8	/* Config space access */
+			       0 0 0		/* no IACK cycles */
+			       2 0ed00000   4   /* Special cycles */
+			       2 0ec80000 100	/* Internal registers */
+			       2 0ec80100  fc>;	/* Internal messaging registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed
+			 */
+			ranges = <02000000 0 80000000 00000003 80000000 0 80000000
+				  01000000 0 00000000 00000002 08000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 0 80000000>;
+
+			/* Ebony has all 4 IRQ pins tied together per slot */
+			interrupt-map-mask = <f800 0 0 7>;
+			interrupt-map = <
+				/* IDSEL 1 */
+				0800 0 0 1 &UIC0 17 8
+				0800 0 0 2 &UIC0 18 8
+				0800 0 0 3 &UIC0 19 8
+				0800 0 0 4 &UIC0 1a 8
+
+				/* IDSEL 2 */
+				1000 0 0 1 &UIC0 18 8
+				1000 0 0 2 &UIC0 19 8
+				1000 0 0 3 &UIC0 1a 8
+				1000 0 0 4 &UIC0 17 8
+			>;
+		};
+	};
+
+	chosen {
+		linux,stdout-path = "/plb/opb/serial@40000300";
+	};
+};
Index: linux-work/arch/powerpc/boot/cuboot-taishan.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/boot/cuboot-taishan.c	2007-12-03 13:54:50.000000000 +1100
@@ -0,0 +1,56 @@
+/*
+ * Old U-boot compatibility for Taishan
+ *
+ * Author: Hugh Blemings <hugh@au.ibm.com>
+ *
+ * Copyright 2007 Hugh Blemings, IBM Corporation.
+ *   Based on cuboot-ebony.c which is:
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *   Based on cuboot-83xx.c, which is:
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "stdio.h"
+#include "cuboot.h"
+#include "reg.h"
+#include "dcr.h"
+#include "4xx.h"
+
+#define TARGET_44x
+#include "ppcboot.h"
+
+static bd_t bd;
+
+BSS_STACK(4096);
+
+static void taishan_fixups(void)
+{
+	/* FIXME: sysclk should be derived by reading the FPGA
+	   registers */
+	unsigned long sysclk = 33000000;
+
+	/* 440EP Clock logic is all but identical to 440GX
+	   so we just use that code for now at least */
+	ibm440ep_fixup_clocks(sysclk, 6 * 1843200);
+
+	ibm4xx_fixup_memsize();
+
+	dt_fixup_mac_addresses(bd.bi_enetaddr, bd.bi_enet1addr);
+
+	ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+		   unsigned long r6, unsigned long r7)
+{
+	CUBOOT_INIT();
+
+	platform_ops.fixups = taishan_fixups;
+	ft_init(_dtb_start, _dtb_end - _dtb_start, 32);
+	serial_console_init();
+}

Re: [PATCH 18/25] powerpc: Base support for 440GX Taishan eval board

[Josh Boyer]

On Thu, 06 Dec 2007 19:00:18 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> From: Hugh Blemings <hugh@blemings.org>
> 
> 
> Signed-off-by: Hugh Blemings <hugh@blemings.org>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
> 
> This needs a bit of cleanup still, probably not to be merged as-is
> just yet (like using mtdcri/mfdcri for CPR access).

A defconfig for it would be nice.

josh

Re: [PATCH 18/25] powerpc: Base support for 440GX Taishan eval board

[Josh Boyer]

On Thu, 06 Dec 2007 19:00:18 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> From: Hugh Blemings <hugh@blemings.org>
> 
> 
> Signed-off-by: Hugh Blemings <hugh@blemings.org>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---

> Index: linux-work/arch/powerpc/platforms/44x/Kconfig
> ===================================================================
> --- linux-work.orig/arch/powerpc/platforms/44x/Kconfig	2007-12-03 12:05:58.000000000 +1100
> +++ linux-work/arch/powerpc/platforms/44x/Kconfig	2007-12-03 13:52:59.000000000 +1100
> @@ -22,6 +22,14 @@ config SEQUOIA
>  	help
>  	  This option enables support for the AMCC PPC440EPX evaluation board.
> 
> +config TAISHAN
> +	bool "Taishan"
> +	depends on 44x
> +	default n
> +	select 440GX
> +	help
> +	  This option enables support for the IBM PPC440GX "Taishan" evaluation board.

AMCC Taishan board.

> +
>  #config LUAN
>  #	bool "Luan"
>  #	depends on 44x
> @@ -58,6 +66,10 @@ config 440GP
> 
>  config 440GX
>  	bool
> +        select IBM_NEW_EMAC_EMAC4
> +	select IBM_NEW_EMAC_RGMII
> +        select IBM_NEW_EMAC_ZMII #test only
> +        select IBM_NEW_EMAC_TAH  #test only
> 
>  config 440SP
>  	bool
> Index: linux-work/arch/powerpc/platforms/44x/Makefile
> ===================================================================
> --- linux-work.orig/arch/powerpc/platforms/44x/Makefile	2007-12-03 11:48:01.000000000 +1100
> +++ linux-work/arch/powerpc/platforms/44x/Makefile	2007-12-03 13:52:59.000000000 +1100
> @@ -1,4 +1,5 @@
>  obj-$(CONFIG_44x)	:= misc_44x.o
>  obj-$(CONFIG_EBONY)	+= ebony.o
> +obj-$(CONFIG_TAISHAN)	+= taishan.o
>  obj-$(CONFIG_BAMBOO) += bamboo.o
>  obj-$(CONFIG_SEQUOIA)	+= sequoia.o
> Index: linux-work/arch/powerpc/platforms/44x/taishan.c
> ===================================================================
> --- /dev/null	1970-01-01 00:00:00.000000000 +0000
> +++ linux-work/arch/powerpc/platforms/44x/taishan.c	2007-12-03 13:39:01.000000000 +1100
> @@ -0,0 +1,74 @@
> +/*
> + * Taishan board specific routines based off ebony.c code
> + * original copyrights below
> + *
> + * Matt Porter <mporter@kernel.crashing.org>
> + * Copyright 2002-2005 MontaVista Software Inc.
> + *
> + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
> + * Copyright (c) 2003-2005 Zultys Technologies
> + *
> + * Rewritten and ported to the merged powerpc tree:
> + * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
> + *
> + * Modified from ebony.c for taishan:
> + * Copyright 2007 Hugh Blemings <hugh@au.ibm.com>, IBM Corporation.
> + *
> + * This program is free software; you can redistribute  it and/or modify it
> + * under  the terms of  the GNU General  Public License as published by the
> + * Free Software Foundation;  either version 2 of the  License, or (at your
> + * option) any later version.
> + */
> +
> +#include <linux/init.h>
> +#include <linux/of_platform.h>
> +
> +#include <asm/machdep.h>
> +#include <asm/prom.h>
> +#include <asm/udbg.h>
> +#include <asm/time.h>
> +#include <asm/uic.h>
> +#include <asm/pci-bridge.h>
> +
> +#include "44x.h"
> +
> +static struct of_device_id taishan_of_bus[] = {
> +	{ .compatible = "ibm,plb4", },
> +	{ .compatible = "ibm,opb", },
> +	{ .compatible = "ibm,ebc", },
> +	{},
> +};
> +
> +static int __init taishan_device_probe(void)
> +{
> +	if (!machine_is(taishan))
> +		return 0;
> +
> +	of_platform_bus_probe(NULL, taishan_of_bus, NULL);
> +
> +	return 0;
> +}
> +device_initcall(taishan_device_probe);
> +
> +/*
> + * Called very early, MMU is off, device-tree isn't unflattened
> + */
> +static int __init taishan_probe(void)
> +{
> +	unsigned long root = of_get_flat_dt_root();
> +
> +	if (!of_flat_dt_is_compatible(root, "ibm,taishan"))
> +		return 0;

amcc,taishan

> +
> +	return 1;
> +}
> +
> +define_machine(taishan) {
> +	.name			= "Taishan",
> +	.probe			= taishan_probe,
> +	.progress		= udbg_progress,
> +	.init_IRQ		= uic_init_tree,
> +	.get_irq		= uic_get_irq,
> +	.restart		= ppc44x_reset_system,
> +	.calibrate_decr		= generic_calibrate_decr,
> +};
> Index: linux-work/arch/powerpc/boot/dts/taishan.dts
> ===================================================================
> --- /dev/null	1970-01-01 00:00:00.000000000 +0000
> +++ linux-work/arch/powerpc/boot/dts/taishan.dts	2007-12-03 13:39:01.000000000 +1100
> @@ -0,0 +1,414 @@
> +/*
> + * Device Tree Source for IBM/AMCC Taishan
> + *

<snip>

> + *
> + * To build:
> + *   dtc -I dts -O asm -o taishan.S -b 0 taishan.dts
> + *   dtc -I dts -O dtb -o taishan.dtb -b 0 taishan.dts

Remove this please.  It's not really needed anymore.
> + */
> +
> +/ {
> +	#address-cells = <2>;
> +	#size-cells = <1>;
> +	model = "ibm,taishan";
> +	compatible = "ibm,taishan";

amcc,taishan

> +	dcr-parent = <&/cpus/PowerPC,440GX@0>;
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		PowerPC,440GX@0 {
> +			device_type = "cpu";
> +			reg = <0>;
> +			clock-frequency = <2FAF0800>; // 800MHz
> +			timebase-frequency = <0>; // Filled in by zImage
> +			i-cache-line-size = <32>;
> +			d-cache-line-size = <32>;
> +			i-cache-size = <8000>; /* 32 kB */
> +			d-cache-size = <8000>; /* 32 kB */
> +			dcr-controller;
> +			dcr-access-method = "native";
> +		};
> +	};
> +
> +	memory {
> +		device_type = "memory";
> +		reg = <0 0 0>; // Filled in by zImage
> +	};
> +
> +
> +	UICB0: interrupt-controller-base {
> +		compatible = "ibm,uic-440gx", "ibm,uic";
> +		interrupt-controller;
> +		cell-index = <3>;
> +		dcr-reg = <200 009>;
> +		#address-cells = <0>;
> +		#size-cells = <0>;
> +		#interrupt-cells = <2>;
> +	};
> +
> +
> +	UIC0: interrupt-controller0 {
> +		compatible = "ibm,uic-440gx", "ibm,uic"; /* Should be AMCC ? */

This I think is fine as ibm,uic.  Unless AMCC actually changed the UIC
to have differences, it was found on the IBM boards first :)

> +		interrupt-controller;
> +		cell-index = <0>;
> +		dcr-reg = <0c0 009>;
> +		#address-cells = <0>;
> +		#size-cells = <0>;
> +		#interrupt-cells = <2>;
> +		interrupts = <01 4 00 4>; /* cascade - first non-critical */
> +		interrupt-parent = <&UICB0>;
> +
> +	};
> +
> +	UIC1: interrupt-controller1 {
> +		compatible = "ibm,uic-440gx", "ibm,uic";
> +		interrupt-controller;
> +		cell-index = <1>;
> +		dcr-reg = <0d0 009>;
> +		#address-cells = <0>;
> +		#size-cells = <0>;
> +		#interrupt-cells = <2>;
> +		interrupts = <03 4 02 4>; /* cascade */
> +		interrupt-parent = <&UICB0>;
> +	};
> +
> +	UIC2: interrupt-controller2 {
> +		compatible = "ibm,uic-440gx", "ibm,uic";
> +		interrupt-controller;
> +		cell-index = <2>; /* was 1 */
> +		dcr-reg = <210 009>;
> +		#address-cells = <0>;
> +		#size-cells = <0>;
> +		#interrupt-cells = <2>;
> +		interrupts = <05 4 04 4>; /* cascade */
> +		interrupt-parent = <&UICB0>;
> +	};
> +
> +
> +	CPC0: cpc {
> +		compatible = "ibm,cpc-440gp";
> +		dcr-reg = <0b0 003 0e0 010>;
> +		// FIXME: anything else?
> +	};
> +
> +	plb {
> +		compatible = "ibm,plb-440gx", "ibm,plb4";
> +		#address-cells = <2>;
> +		#size-cells = <1>;
> +		ranges;
> +		clock-frequency = <9896800>; // 160MHz
> +
> +		SDRAM0: memory-controller {
> +			compatible = "ibm,sdram-440gp";
> +			dcr-reg = <010 2>;
> +			// FIXME: anything else?
> +		};
> +
> +		SRAM0: sram {
> +			compatible = "ibm,sram-440gp";
> +			dcr-reg = <020 8 00a 1>;
> +		};
> +
> +		DMA0: dma {
> +			// FIXME: ???
> +			compatible = "ibm,dma-440gp";
> +			dcr-reg = <100 027>;
> +		};
> +
> +		MAL0: mcmal {
> +			compatible = "ibm,mcmal-440gx", "ibm,mcmal2";
> +			dcr-reg = <180 62>;
> +			num-tx-chans = <4>;
> +			num-rx-chans = <4>;
> +			interrupt-parent = <&MAL0>;
> +			interrupts = <0 1 2 3 4>;
> +			#interrupt-cells = <1>;
> +			#address-cells = <0>;
> +			#size-cells = <0>;
> +			interrupt-map = </*TXEOB*/ 0 &UIC0 a 4
> +					 /*RXEOB*/ 1 &UIC0 b 4
> +					 /*SERR*/  2 &UIC1 0 4
> +					 /*TXDE*/  3 &UIC1 1 4
> +					 /*RXDE*/  4 &UIC1 2 4>;
> +			interrupt-map-mask = <ffffffff>;
> +		};
> +
> +		POB0: opb {
> +			compatible = "ibm,opb-440gx", "ibm,opb";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			/* Wish there was a nicer way of specifying a full 32-bit
> +			   range */
> +			ranges = <00000000 1 00000000 80000000
> +				  80000000 1 80000000 80000000>;
> +			dcr-reg = <090 00b>;
> +			interrupt-parent = <&UIC1>;
> +			interrupts = <7 4>;
> +			clock-frequency = <4C4B400>; // 80MHz
> +
> +
> +			/* Put EBC0 back **FIXME** */

Hrm?

> +
> +			EBC0: ebc {
> +				compatible = "ibm,ebc-440gx", "ibm,ebc";
> +				dcr-reg = <012 2>;
> +				#address-cells = <2>;
> +				#size-cells = <1>;
> +				clock-frequency = <4C4B400>; // 80MHz
> +				// ranges property is supplied by zImage
> +				// based on firmware's configuration of the
> +				// EBC bridge
> +				interrupts = <5 4>;
> +				interrupt-parent = <&UIC1>;
> +
> +//				small-flash@0,80000 {
> +//					device_type = "rom";
> +//					compatible = "direct-mapped";
> +//					probe-type = "JEDEC";
> +//					bank-width = <1>;
> +//					partitions = <0 80000>;
> +//					partition-names = "OpenBIOS";
> +//					reg = <0 80000 80000>;
> +//				};

You can probably just omit the child EBC nodes for now.  Adding them
when they're right is pretty easy.

> +
> +//				ds1743@1,0 {
> +//					/* NVRAM & RTC */
> +//					compatible = "ds1743";
> +//					reg = <1 0 2000>;
> +//				};
> +
> +//				large-flash@2,0 {
> +//					device_type = "rom";
> +//					compatible = "direct-mapped";
> +//					probe-type = "JEDEC";
> +//					bank-width = <1>;
> +//					partitions = <0 380000
> +//						      380000 80000>;
> +//					partition-names = "fs", "firmware";
> +//					reg = <2 0 400000>;
> +//				};
> +
> +//				ir@3,0 {
> +//					reg = <3 0 10>;
> +//				};
> +
> +//				fpga@7,0 {
> +//					compatible = "Ebony-FPGA";
> +//					reg = <7 0 10>;
> +//				};
> +			};
> +
> +

> +		PCIX0: pci@20ec00000 {
> +			device_type = "pci";
> +			#interrupt-cells = <1>;
> +			#size-cells = <2>;
> +			#address-cells = <3>;
> +			compatible = "ibm,plb440gp-pcix", "ibm,plb-pcix";
> +			primary;
> +			large-inbound-windows;
> +			enable-msi-hole;
> +			reg = <2 0ec00000   8	/* Config space access */
> +			       0 0 0		/* no IACK cycles */
> +			       2 0ed00000   4   /* Special cycles */
> +			       2 0ec80000 100	/* Internal registers */
> +			       2 0ec80100  fc>;	/* Internal messaging registers */
> +
> +			/* Outbound ranges, one memory and one IO,
> +			 * later cannot be changed
> +			 */
> +			ranges = <02000000 0 80000000 00000003 80000000 0 80000000
> +				  01000000 0 00000000 00000002 08000000 0 00010000>;
> +
> +			/* Inbound 2GB range starting at 0 */
> +			dma-ranges = <42000000 0 0 0 0 0 80000000>;
> +
> +			/* Ebony has all 4 IRQ pins tied together per slot */

This isn't an Ebony board.  Does Taishan do the same?

> +			interrupt-map-mask = <f800 0 0 7>;
> +			interrupt-map = <
> +				/* IDSEL 1 */
> +				0800 0 0 1 &UIC0 17 8
> +				0800 0 0 2 &UIC0 18 8
> +				0800 0 0 3 &UIC0 19 8
> +				0800 0 0 4 &UIC0 1a 8
> +
> +				/* IDSEL 2 */
> +				1000 0 0 1 &UIC0 18 8
> +				1000 0 0 2 &UIC0 19 8
> +				1000 0 0 3 &UIC0 1a 8
> +				1000 0 0 4 &UIC0 17 8
> +			>;
> +		};
> +	};
> +
> +	chosen {
> +		linux,stdout-path = "/plb/opb/serial@40000300";
> +	};
> +};

josh

Re: [PATCH 18/25] powerpc: Base support for 440GX Taishan eval board

[Benjamin Herrenschmidt]

> > +config TAISHAN
> > +	bool "Taishan"
> > +	depends on 44x
> > +	default n
> > +	select 440GX
> > +	help
> > +	  This option enables support for the IBM PPC440GX "Taishan" evaluation board.
> 
> AMCC Taishan board.

Ah yeah, indeed. I'll fix these. (BTW. Could you CC Hugh next time as
he's the author).
 
> > +			/* Ebony has all 4 IRQ pins tied together per slot */
> 
> This isn't an Ebony board.  Does Taishan do the same?

The comment is bogus, the mapping is correct (and doesn't match the
comment, I just forgot to remove it after copy/pasting :-)

Ben.

Re: [PATCH 18/25] powerpc: Base support for 440GX Taishan eval board

[Olof Johansson]

On Sun, Dec 09, 2007 at 06:01:55PM +1100, Benjamin Herrenschmidt wrote:

> Ah yeah, indeed. I'll fix these. (BTW. Could you CC Hugh next time as
> he's the author).

I didn't see him Cc:d on the patch submission, and I'm guessing Josh did
a reply-all. Seems as if the mailing list manager strips Cc fields of
people already subscribed to the list, I've seen it before.


-Olof

Re: [PATCH 18/25] powerpc: Base support for 440GX Taishan eval board

[Josh Boyer]

On Sun, 9 Dec 2007 11:24:04 -0600
Olof Johansson <olof@lixom.net> wrote:

> On Sun, Dec 09, 2007 at 06:01:55PM +1100, Benjamin Herrenschmidt wrote:
> 
> > Ah yeah, indeed. I'll fix these. (BTW. Could you CC Hugh next time as
> > he's the author).
> 
> I didn't see him Cc:d on the patch submission, and I'm guessing Josh did
> a reply-all. Seems as if the mailing list manager strips Cc fields of
> people already subscribed to the list, I've seen it before.

Yeah, I just did Reply-to-all.  I've never seen CC's be stripped
though.  Anyway, I'll try to remember in the future.

josh

Re: [PATCH 18/25] powerpc: Base support for 440GX Taishan eval board

[Olof Johansson]

On Sun, Dec 09, 2007 at 12:24:08PM -0600, Josh Boyer wrote:

> Yeah, I just did Reply-to-all.  I've never seen CC's be stripped
> though.  Anyway, I'll try to remember in the future.

Actually, my mail that you replied to had your address stripped off the
Cc list when it came out on the list (at least for me). :-)

It was on it when I sent it though.


-Olof

Re: [PATCH 18/25] powerpc: Base support for 440GX Taishan eval board

[Benjamin Herrenschmidt]

On Sun, 2007-12-09 at 11:24 -0600, Olof Johansson wrote:
> On Sun, Dec 09, 2007 at 06:01:55PM +1100, Benjamin Herrenschmidt wrote:
> 
> > Ah yeah, indeed. I'll fix these. (BTW. Could you CC Hugh next time as
> > he's the author).
> 
> I didn't see him Cc:d on the patch submission, and I'm guessing Josh did
> a reply-all. Seems as if the mailing list manager strips Cc fields of
> people already subscribed to the list, I've seen it before.

Yeah, my script for mailing quilt series doesn't do the selective CC
thingy... Bah, mpe wrote it, I suppose I can either nag him to fix it or
start learning perl :-)

Cheers,
Ben.

Re: [PATCH 18/25] powerpc: Base support for 440GX Taishan eval board

[Josh Boyer]

On Mon, 10 Dec 2007 06:58:33 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> 
> On Sun, 2007-12-09 at 11:24 -0600, Olof Johansson wrote:
> > On Sun, Dec 09, 2007 at 06:01:55PM +1100, Benjamin Herrenschmidt wrote:
> > 
> > > Ah yeah, indeed. I'll fix these. (BTW. Could you CC Hugh next time as
> > > he's the author).
> > 
> > I didn't see him Cc:d on the patch submission, and I'm guessing Josh did
> > a reply-all. Seems as if the mailing list manager strips Cc fields of
> > people already subscribed to the list, I've seen it before.
> 
> Yeah, my script for mailing quilt series doesn't do the selective CC
> thingy... Bah, mpe wrote it, I suppose I can either nag him to fix it or
> start learning perl :-)

Or you could just use 'quilt mail' ... 

josh

CC munging by mailman lists (Was: Re: [PATCH 18/25] powerpc: Base support for 440GX Taishan eval board)

[Stephen Rothwell]

[-- Attachment #1: Type: text/plain, Size: 787 bytes --]

On Sun, 9 Dec 2007 11:24:04 -0600 Olof Johansson <olof@lixom.net> wrote:
>
> I didn't see him Cc:d on the patch submission, and I'm guessing Josh did
> a reply-all. Seems as if the mailing list manager strips Cc fields of
> people already subscribed to the list, I've seen it before.

Ok, this is a per user setting with the default for new users set to
attempt to strip the user from the CC header if they are a member of the
list.

I have now changed the default for new users to not do this stripping.
Current users can change their own setting by going to
https://ozlabs.org/listinfo/linuxppc-dev and changing the "Avoid
duplicate copies of messages?" option.

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

[-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --]

Re: [PATCH 18/25] powerpc: Base support for 440GX Taishan eval board

[Benjamin Herrenschmidt]

powerpc: Base support for 440GX Taishan eval board

From: Hugh Blemings <hugh@blemings.org>


Signed-off-by: Hugh Blemings <hugh@blemings.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

This needs a bit of cleanup still, probably not to be merged as-is
just yet (like using mtdcri/mfdcri for CPR access).

Index: linux-work/arch/powerpc/boot/dcr.h
===================================================================
--- linux-work.orig/arch/powerpc/boot/dcr.h	2007-12-10 15:52:04.000000000 +1100
+++ linux-work/arch/powerpc/boot/dcr.h	2007-12-10 15:56:56.000000000 +1100
@@ -139,4 +139,31 @@ static const unsigned long sdram_bxcr[] 
 #define DCRN_405_CPC0_CR0 0xb1
 #define DCRN_405_CPC0_CR1 0xb2
 
+
+/* 440GX Clock control etc */
+
+
+#define DCRN_CPR0_CLKUPD				0x020
+#define DCRN_CPR0_PLLC					0x040
+#define DCRN_CPR0_PLLD					0x060
+#define DCRN_CPR0_PRIMAD				0x080
+#define DCRN_CPR0_PRIMBD				0x0a0
+#define DCRN_CPR0_OPBD					0x0c0
+#define DCRN_CPR0_PERD					0x0e0
+#define DCRN_CPR0_MALD					0x100
+
+/* CPRs read/write helper macros - based off include/asm-ppc/ibm44x.h */
+
+#define DCRN_CPR0_CFGADDR				0xc
+#define DCRN_CPR0_CFGDATA				0xd
+
+#define CPR0_READ(offset) ({\
+	mtdcr(DCRN_CPR0_CFGADDR, offset); \
+	mfdcr(DCRN_CPR0_CFGDATA); })
+#define CPR0_WRITE(offset, data) ({\
+	mtdcr(DCRN_CPR0_CFGADDR, offset); \
+	mtdcr(DCRN_CPR0_CFGDATA, data); })
+
+
+
 #endif	/* _PPC_BOOT_DCR_H_ */
Index: linux-work/arch/powerpc/boot/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/boot/Makefile	2007-12-10 15:54:23.000000000 +1100
+++ linux-work/arch/powerpc/boot/Makefile	2007-12-10 15:56:56.000000000 +1100
@@ -37,8 +37,10 @@ BOOTCFLAGS	+= -I$(obj) -I$(srctree)/$(ob
 
 $(obj)/4xx.o: BOOTCFLAGS += -mcpu=440
 $(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
+$(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=440
 $(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405
 
+
 zlib       := inffast.c inflate.c inftrees.c
 zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
 zliblinuxheader := zlib.h zconf.h zutil.h
@@ -56,7 +58,7 @@ src-plat := of.c cuboot-52xx.c cuboot-83
 		cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
 		ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
 		cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c \
-		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c
+		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c cuboot-taishan.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -160,6 +162,7 @@ image-$(CONFIG_EBONY)			+= treeImage.ebo
 image-$(CONFIG_BAMBOO)			+= treeImage.bamboo cuImage.bamboo
 image-$(CONFIG_SEQUOIA)			+= cuImage.sequoia
 image-$(CONFIG_WALNUT)			+= treeImage.walnut
+image-$(CONFIG_TAISHAN)			+= cuImage.taishan
 endif
 
 # For 32-bit powermacs, build the COFF and miboot images
Index: linux-work/arch/powerpc/Kconfig.debug
===================================================================
--- linux-work.orig/arch/powerpc/Kconfig.debug	2007-12-10 15:54:22.000000000 +1100
+++ linux-work/arch/powerpc/Kconfig.debug	2007-12-10 15:56:56.000000000 +1100
@@ -225,7 +225,8 @@ config PPC_EARLY_DEBUG_44x
 	depends on 44x
 	help
 	  Select this to enable early debugging for IBM 44x chips via the
-	  inbuilt serial port.
+	  inbuilt serial port.  If you enable this, ensure you set
+          PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
 
 config PPC_EARLY_DEBUG_40x
 	bool "Early serial debugging for IBM/AMCC 40x CPUs"
@@ -250,6 +251,9 @@ config PPC_EARLY_DEBUG_44x_PHYSLOW
 	hex "Low 32 bits of early debug UART physical address"
 	depends on PPC_EARLY_DEBUG_44x
 	default "0x40000200"
+	help
+	  You probably want 0x40000200 for ebony boards and
+          0x40000300 for taishan
 
 config PPC_EARLY_DEBUG_44x_PHYSHIGH
 	hex "EPRN of early debug UART physical address"
Index: linux-work/arch/powerpc/platforms/44x/Kconfig
===================================================================
--- linux-work.orig/arch/powerpc/platforms/44x/Kconfig	2007-12-10 15:52:04.000000000 +1100
+++ linux-work/arch/powerpc/platforms/44x/Kconfig	2007-12-10 16:36:44.000000000 +1100
@@ -22,6 +22,15 @@ config SEQUOIA
 	help
 	  This option enables support for the AMCC PPC440EPX evaluation board.
 
+config TAISHAN
+	bool "Taishan"
+	depends on 44x
+	default n
+	select 440GX
+	help
+	  This option enables support for the AMCC PPC440GX "Taishan"
+	  evaluation board.
+
 #config LUAN
 #	bool "Luan"
 #	depends on 44x
@@ -58,6 +67,10 @@ config 440GP
 
 config 440GX
 	bool
+        select IBM_NEW_EMAC_EMAC4
+	select IBM_NEW_EMAC_RGMII
+        select IBM_NEW_EMAC_ZMII #test only
+        select IBM_NEW_EMAC_TAH  #test only
 
 config 440SP
 	bool
Index: linux-work/arch/powerpc/platforms/44x/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/platforms/44x/Makefile	2007-12-10 15:52:04.000000000 +1100
+++ linux-work/arch/powerpc/platforms/44x/Makefile	2007-12-10 15:56:56.000000000 +1100
@@ -1,4 +1,5 @@
 obj-$(CONFIG_44x)	:= misc_44x.o
 obj-$(CONFIG_EBONY)	+= ebony.o
+obj-$(CONFIG_TAISHAN)	+= taishan.o
 obj-$(CONFIG_BAMBOO) += bamboo.o
 obj-$(CONFIG_SEQUOIA)	+= sequoia.o
Index: linux-work/arch/powerpc/platforms/44x/taishan.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/platforms/44x/taishan.c	2007-12-10 16:37:07.000000000 +1100
@@ -0,0 +1,74 @@
+/*
+ * Taishan board specific routines based off ebony.c code
+ * original copyrights below
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003-2005 Zultys Technologies
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ *
+ * Modified from ebony.c for taishan:
+ * Copyright 2007 Hugh Blemings <hugh@au.ibm.com>, IBM Corporation.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/pci-bridge.h>
+
+#include "44x.h"
+
+static struct of_device_id taishan_of_bus[] = {
+	{ .compatible = "ibm,plb4", },
+	{ .compatible = "ibm,opb", },
+	{ .compatible = "ibm,ebc", },
+	{},
+};
+
+static int __init taishan_device_probe(void)
+{
+	if (!machine_is(taishan))
+		return 0;
+
+	of_platform_bus_probe(NULL, taishan_of_bus, NULL);
+
+	return 0;
+}
+device_initcall(taishan_device_probe);
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init taishan_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "amcc,taishan"))
+		return 0;
+
+	return 1;
+}
+
+define_machine(taishan) {
+	.name			= "Taishan",
+	.probe			= taishan_probe,
+	.progress		= udbg_progress,
+	.init_IRQ		= uic_init_tree,
+	.get_irq		= uic_get_irq,
+	.restart		= ppc44x_reset_system,
+	.calibrate_decr		= generic_calibrate_decr,
+};
Index: linux-work/arch/powerpc/boot/dts/taishan.dts
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/boot/dts/taishan.dts	2007-12-10 16:38:54.000000000 +1100
@@ -0,0 +1,375 @@
+/*
+ * Device Tree Source for IBM/AMCC Taishan
+ *
+ * Copyright 2007 IBM Corp.
+ * Hugh Blemings <hugh@au.ibm.com> based off code by
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>, David Gibson <dwg@au1.ibm.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <1>;
+	model = "amcc,taishan";
+	compatible = "amcc,taishan";
+	dcr-parent = <&/cpus/PowerPC,440GX@0>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,440GX@0 {
+			device_type = "cpu";
+			reg = <0>;
+			clock-frequency = <2FAF0800>; // 800MHz
+			timebase-frequency = <0>; // Filled in by zImage
+			i-cache-line-size = <32>;
+			d-cache-line-size = <32>;
+			i-cache-size = <8000>; /* 32 kB */
+			d-cache-size = <8000>; /* 32 kB */
+			dcr-controller;
+			dcr-access-method = "native";
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0 0 0>; // Filled in by zImage
+	};
+
+
+	UICB0: interrupt-controller-base {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <3>;
+		dcr-reg = <200 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+	};
+
+
+	UIC0: interrupt-controller0 {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <0>;
+		dcr-reg = <0c0 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <01 4 00 4>; /* cascade - first non-critical */
+		interrupt-parent = <&UICB0>;
+
+	};
+
+	UIC1: interrupt-controller1 {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <1>;
+		dcr-reg = <0d0 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <03 4 02 4>; /* cascade */
+		interrupt-parent = <&UICB0>;
+	};
+
+	UIC2: interrupt-controller2 {
+		compatible = "ibm,uic-440gx", "ibm,uic";
+		interrupt-controller;
+		cell-index = <2>; /* was 1 */
+		dcr-reg = <210 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <05 4 04 4>; /* cascade */
+		interrupt-parent = <&UICB0>;
+	};
+
+
+	CPC0: cpc {
+		compatible = "ibm,cpc-440gp";
+		dcr-reg = <0b0 003 0e0 010>;
+		// FIXME: anything else?
+	};
+
+	plb {
+		compatible = "ibm,plb-440gx", "ibm,plb4";
+		#address-cells = <2>;
+		#size-cells = <1>;
+		ranges;
+		clock-frequency = <9896800>; // 160MHz
+
+		SDRAM0: memory-controller {
+			compatible = "ibm,sdram-440gp";
+			dcr-reg = <010 2>;
+			// FIXME: anything else?
+		};
+
+		SRAM0: sram {
+			compatible = "ibm,sram-440gp";
+			dcr-reg = <020 8 00a 1>;
+		};
+
+		DMA0: dma {
+			// FIXME: ???
+			compatible = "ibm,dma-440gp";
+			dcr-reg = <100 027>;
+		};
+
+		MAL0: mcmal {
+			compatible = "ibm,mcmal-440gx", "ibm,mcmal2";
+			dcr-reg = <180 62>;
+			num-tx-chans = <4>;
+			num-rx-chans = <4>;
+			interrupt-parent = <&MAL0>;
+			interrupts = <0 1 2 3 4>;
+			#interrupt-cells = <1>;
+			#address-cells = <0>;
+			#size-cells = <0>;
+			interrupt-map = </*TXEOB*/ 0 &UIC0 a 4
+					 /*RXEOB*/ 1 &UIC0 b 4
+					 /*SERR*/  2 &UIC1 0 4
+					 /*TXDE*/  3 &UIC1 1 4
+					 /*RXDE*/  4 &UIC1 2 4>;
+			interrupt-map-mask = <ffffffff>;
+		};
+
+		POB0: opb {
+			compatible = "ibm,opb-440gx", "ibm,opb";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			/* Wish there was a nicer way of specifying a full 32-bit
+			   range */
+			ranges = <00000000 1 00000000 80000000
+				  80000000 1 80000000 80000000>;
+			dcr-reg = <090 00b>;
+			interrupt-parent = <&UIC1>;
+			interrupts = <7 4>;
+			clock-frequency = <4C4B400>; // 80MHz
+
+
+			EBC0: ebc {
+				compatible = "ibm,ebc-440gx", "ibm,ebc";
+				dcr-reg = <012 2>;
+				#address-cells = <2>;
+				#size-cells = <1>;
+				clock-frequency = <4C4B400>; // 80MHz
+
+				/* ranges property is supplied by zImage
+				 * based on firmware's configuration of the
+				 * EBC bridge */
+
+				interrupts = <5 4>;
+				interrupt-parent = <&UIC1>;
+
+				/* TODO: Add other EBC devices */
+			};
+
+
+
+			UART0: serial@40000200 {
+				device_type = "serial";
+				compatible = "ns16550";
+				reg = <40000200 8>;
+				virtual-reg = <e0000200>;
+ 				clock-frequency = <A8C000>;
+				current-speed = <1C200>; /* 115200 */
+				interrupt-parent = <&UIC0>;
+				interrupts = <0 4>;
+			};
+
+			UART1: serial@40000300 {
+				device_type = "serial";
+				compatible = "ns16550";
+				reg = <40000300 8>;
+				virtual-reg = <e0000300>;
+				clock-frequency = <A8C000>;
+				current-speed = <1C200>; /* 115200 */
+				interrupt-parent = <&UIC0>;
+				interrupts = <1 4>;
+			};
+
+			IIC0: i2c@40000400 {
+				/* FIXME */
+				device_type = "i2c";
+				compatible = "ibm,iic-440gp", "ibm,iic";
+				reg = <40000400 14>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <2 4>;
+			};
+			IIC1: i2c@40000500 {
+				/* FIXME */
+				device_type = "i2c";
+				compatible = "ibm,iic-440gp", "ibm,iic";
+				reg = <40000500 14>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <3 4>;
+			};
+
+			GPIO0: gpio@40000700 {
+				/* FIXME */
+				compatible = "ibm,gpio-440gp";
+				reg = <40000700 20>;
+			};
+
+			ZMII0: emac-zmii@40000780 {
+				device_type = "zgmii-interface";
+				compatible = "ibm,zmii-440gx", "ibm,zmii";
+				reg = <40000780 c>;
+			};
+
+			RGMII0: emac-rgmii@40000790 {
+				device_type = "rgmii-interface";
+				compatible = "ibm,rgmii";
+				reg = <40000790 8>;
+			};
+
+
+			EMAC0: ethernet@40000800 {
+				unused = <1>;
+				linux,network-index = <2>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC1>;
+				interrupts = <1c 4 1d 4>;
+				reg = <40000800 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <0>;
+				mal-rx-channel = <0>;
+				cell-index = <0>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rmii";
+				phy-map = <00000001>;
+				zmii-device = <&ZMII0>;
+				zmii-channel = <0>;
+			};
+		 	EMAC1: ethernet@40000900 {
+				unused = <1>;
+				linux,network-index = <3>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC1>;
+				interrupts = <1e 4 1f 4>;
+				reg = <40000900 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <1>;
+				mal-rx-channel = <1>;
+				cell-index = <1>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rmii";
+				phy-map = <00000001>;
+ 				zmii-device = <&ZMII0>;
+				zmii-channel = <1>;
+			};
+
+		 	EMAC2: ethernet@40000c00 {
+				linux,network-index = <0>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC2>;
+				interrupts = <0 4 1 4>;
+				reg = <40000c00 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <2>;
+				mal-rx-channel = <2>;
+				cell-index = <2>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rgmii";
+				phy-map = <00000001>;
+				rgmii-device = <&RGMII0>;
+				rgmii-channel = <0>;
+ 				zmii-device = <&ZMII0>;
+				zmii-channel = <2>;
+			};
+
+		 	EMAC3: ethernet@40000e00 {
+				linux,network-index = <1>;
+				device_type = "network";
+				compatible = "ibm,emac-440gx", "ibm,emac4";
+				interrupt-parent = <&UIC2>;
+				interrupts = <2 4 3 4>;
+				reg = <40000e00 70>;
+				local-mac-address = [000000000000]; // Filled in by zImage
+				mal-device = <&MAL0>;
+				mal-tx-channel = <3>;
+				mal-rx-channel = <3>;
+				cell-index = <3>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "rgmii";
+				phy-map = <00000003>;
+				rgmii-device = <&RGMII0>;
+				rgmii-channel = <1>;
+ 				zmii-device = <&ZMII0>;
+				zmii-channel = <3>;
+			};
+
+
+			GPT0: gpt@40000a00 {
+				/* FIXME */
+				reg = <40000a00 d4>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <12 4 13 4 14 4 15 4 16 4>;
+			};
+
+		};
+
+		PCIX0: pci@20ec00000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb440gp-pcix", "ibm,plb-pcix";
+			primary;
+			large-inbound-windows;
+			enable-msi-hole;
+			reg = <2 0ec00000   8	/* Config space access */
+			       0 0 0		/* no IACK cycles */
+			       2 0ed00000   4   /* Special cycles */
+			       2 0ec80000 100	/* Internal registers */
+			       2 0ec80100  fc>;	/* Internal messaging registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed
+			 */
+			ranges = <02000000 0 80000000 00000003 80000000 0 80000000
+				  01000000 0 00000000 00000002 08000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 0 80000000>;
+
+			interrupt-map-mask = <f800 0 0 7>;
+			interrupt-map = <
+				/* IDSEL 1 */
+				0800 0 0 1 &UIC0 17 8
+				0800 0 0 2 &UIC0 18 8
+				0800 0 0 3 &UIC0 19 8
+				0800 0 0 4 &UIC0 1a 8
+
+				/* IDSEL 2 */
+				1000 0 0 1 &UIC0 18 8
+				1000 0 0 2 &UIC0 19 8
+				1000 0 0 3 &UIC0 1a 8
+				1000 0 0 4 &UIC0 17 8
+			>;
+		};
+	};
+
+	chosen {
+		linux,stdout-path = "/plb/opb/serial@40000300";
+	};
+};
Index: linux-work/arch/powerpc/boot/cuboot-taishan.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/boot/cuboot-taishan.c	2007-12-10 15:56:56.000000000 +1100
@@ -0,0 +1,56 @@
+/*
+ * Old U-boot compatibility for Taishan
+ *
+ * Author: Hugh Blemings <hugh@au.ibm.com>
+ *
+ * Copyright 2007 Hugh Blemings, IBM Corporation.
+ *   Based on cuboot-ebony.c which is:
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *   Based on cuboot-83xx.c, which is:
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "stdio.h"
+#include "cuboot.h"
+#include "reg.h"
+#include "dcr.h"
+#include "4xx.h"
+
+#define TARGET_44x
+#include "ppcboot.h"
+
+static bd_t bd;
+
+BSS_STACK(4096);
+
+static void taishan_fixups(void)
+{
+	/* FIXME: sysclk should be derived by reading the FPGA
+	   registers */
+	unsigned long sysclk = 33000000;
+
+	/* 440EP Clock logic is all but identical to 440GX
+	   so we just use that code for now at least */
+	ibm440ep_fixup_clocks(sysclk, 6 * 1843200);
+
+	ibm4xx_fixup_memsize();
+
+	dt_fixup_mac_addresses(bd.bi_enetaddr, bd.bi_enet1addr);
+
+	ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+		   unsigned long r6, unsigned long r7)
+{
+	CUBOOT_INIT();
+
+	platform_ops.fixups = taishan_fixups;
+	ft_init(_dtb_start, _dtb_end - _dtb_start, 32);
+	serial_console_init();
+}

[PATCH 19/25] powerpc: Wire up PCI on Bamboo board

[Benjamin Herrenschmidt]

This adds the device-tree bits & call to ppc4xx_pci_find_bridges()
to make PCI work on the Bamboo board

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/boot/dts/bamboo.dts |   40 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

Index: linux-work/arch/powerpc/boot/dts/bamboo.dts
===================================================================
--- linux-work.orig/arch/powerpc/boot/dts/bamboo.dts	2007-11-30 13:40:21.000000000 +1100
+++ linux-work/arch/powerpc/boot/dts/bamboo.dts	2007-11-30 13:40:45.000000000 +1100
@@ -239,10 +239,48 @@
 				zmii-channel = <1>;
 			};
 		};
+
+		PCI0: pci@ec000000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb440ep-pci", "ibm,plb-pci";
+			primary;
+			reg = <0 eec00000 8	/* Config space access */
+			       0 eed80000 4	/* IACK */
+			       0 eed80000 4	/* Special cycle */
+			       0 ef480000 40>;	/* Internal registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed. Chip supports a second
+			 * IO range but we don't use it for now
+			 */
+			ranges = <02000000 0 a0000000 0 a0000000 0 20000000
+				  01000000 0 00000000 0 e8000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 0 80000000>;
+
+			/* Walnut has all 4 IRQ pins tied together per slot */
+			interrupt-map-mask = <f800 0 0 0>;
+			interrupt-map = <
+				/* IDSEL 1 */
+				0800 0 0 0 &UIC0 1c 8
+
+				/* IDSEL 2 */
+				1000 0 0 0 &UIC0 1b 8
+
+				/* IDSEL 3 */
+				1800 0 0 0 &UIC0 1a 8
+
+				/* IDSEL 4 */
+				2000 0 0 0 &UIC0 19 8
+			>;
+		};
 	};
 
 	chosen {
 		linux,stdout-path = "/plb/opb/serial@ef600300";
-		bootargs = "console=ttyS0,115200";
 	};
 };

Re: [PATCH 19/25] powerpc: Wire up PCI on Bamboo board

[Josh Boyer]

On Thu, 06 Dec 2007 19:00:19 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> This adds the device-tree bits & call to ppc4xx_pci_find_bridges()
> to make PCI work on the Bamboo board
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
> 
>  arch/powerpc/boot/dts/bamboo.dts |   40 ++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 39 insertions(+), 1 deletion(-)
> 
> Index: linux-work/arch/powerpc/boot/dts/bamboo.dts
> ===================================================================
> --- linux-work.orig/arch/powerpc/boot/dts/bamboo.dts	2007-11-30 13:40:21.000000000 +1100
> +++ linux-work/arch/powerpc/boot/dts/bamboo.dts	2007-11-30 13:40:45.000000000 +1100
> @@ -239,10 +239,48 @@
>  				zmii-channel = <1>;
>  			};
>  		};
> +
> +		PCI0: pci@ec000000 {
> +			device_type = "pci";
> +			#interrupt-cells = <1>;
> +			#size-cells = <2>;
> +			#address-cells = <3>;
> +			compatible = "ibm,plb440ep-pci", "ibm,plb-pci";
> +			primary;
> +			reg = <0 eec00000 8	/* Config space access */
> +			       0 eed80000 4	/* IACK */
> +			       0 eed80000 4	/* Special cycle */
> +			       0 ef480000 40>;	/* Internal registers */
> +
> +			/* Outbound ranges, one memory and one IO,
> +			 * later cannot be changed. Chip supports a second
> +			 * IO range but we don't use it for now
> +			 */
> +			ranges = <02000000 0 a0000000 0 a0000000 0 20000000
> +				  01000000 0 00000000 0 e8000000 0 00010000>;
> +
> +			/* Inbound 2GB range starting at 0 */
> +			dma-ranges = <42000000 0 0 0 0 0 80000000>;
> +
> +			/* Walnut has all 4 IRQ pins tied together per slot */

Not a Walnut board.

> +			interrupt-map-mask = <f800 0 0 0>;
> +			interrupt-map = <
> +				/* IDSEL 1 */
> +				0800 0 0 0 &UIC0 1c 8
> +
> +				/* IDSEL 2 */
> +				1000 0 0 0 &UIC0 1b 8
> +
> +				/* IDSEL 3 */
> +				1800 0 0 0 &UIC0 1a 8
> +
> +				/* IDSEL 4 */
> +				2000 0 0 0 &UIC0 19 8
> +			>;
> +		};
>  	};
> 
>  	chosen {
>  		linux,stdout-path = "/plb/opb/serial@ef600300";
> -		bootargs = "console=ttyS0,115200";

Did you remove that for a reason?

josh

Re: [PATCH 19/25] powerpc: Wire up PCI on Bamboo board

[Benjamin Herrenschmidt]

> > +			/* Walnut has all 4 IRQ pins tied together per slot */
> 
> Not a Walnut board.

Right, though the IRQ routing is similar (the comment is correct)

> > +			interrupt-map-mask = <f800 0 0 0>;
> > +			interrupt-map = <
> > +				/* IDSEL 1 */
> > +				0800 0 0 0 &UIC0 1c 8
> > +
> > +				/* IDSEL 2 */
> > +				1000 0 0 0 &UIC0 1b 8
> > +
> > +				/* IDSEL 3 */
> > +				1800 0 0 0 &UIC0 1a 8
> > +
> > +				/* IDSEL 4 */
> > +				2000 0 0 0 &UIC0 19 8
> > +			>;
> > +		};
> >  	};
> > 
> >  	chosen {
> >  		linux,stdout-path = "/plb/opb/serial@ef600300";
> > -		bootargs = "console=ttyS0,115200";
> 
> Did you remove that for a reason?

Yes, and I want to do a pass removing all the occurences of bootargs in
the .dts file, it has absolutely nothing to do there (in theory nothing
in /chosen though linux,stdout-path can probably be argued and happens
to be handy but not bootargs).

Ben.

Re: [PATCH 19/25] powerpc: Wire up PCI on Bamboo board

[Benjamin Herrenschmidt]

powerpc: Wire up PCI on Bamboo board

This adds the device-tree bits & call to ppc4xx_pci_find_bridges()
to make PCI work on the Bamboo board

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Index: linux-work/arch/powerpc/boot/dts/bamboo.dts
===================================================================
--- linux-work.orig/arch/powerpc/boot/dts/bamboo.dts	2007-12-10 15:56:59.000000000 +1100
+++ linux-work/arch/powerpc/boot/dts/bamboo.dts	2007-12-10 16:39:51.000000000 +1100
@@ -239,10 +239,48 @@
 				zmii-channel = <1>;
 			};
 		};
+
+		PCI0: pci@ec000000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb440ep-pci", "ibm,plb-pci";
+			primary;
+			reg = <0 eec00000 8	/* Config space access */
+			       0 eed80000 4	/* IACK */
+			       0 eed80000 4	/* Special cycle */
+			       0 ef480000 40>;	/* Internal registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed. Chip supports a second
+			 * IO range but we don't use it for now
+			 */
+			ranges = <02000000 0 a0000000 0 a0000000 0 20000000
+				  01000000 0 00000000 0 e8000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 0 80000000>;
+
+			/* Bamboo has all 4 IRQ pins tied together per slot */
+			interrupt-map-mask = <f800 0 0 0>;
+			interrupt-map = <
+				/* IDSEL 1 */
+				0800 0 0 0 &UIC0 1c 8
+
+				/* IDSEL 2 */
+				1000 0 0 0 &UIC0 1b 8
+
+				/* IDSEL 3 */
+				1800 0 0 0 &UIC0 1a 8
+
+				/* IDSEL 4 */
+				2000 0 0 0 &UIC0 19 8
+			>;
+		};
 	};
 
 	chosen {
 		linux,stdout-path = "/plb/opb/serial@ef600300";
-		bootargs = "console=ttyS0,115200";
 	};
 };

[PATCH 20/25] powerpc: Wire up 440EP USB controlle support to Bamboo board

[Benjamin Herrenschmidt]

This adds the definition of the on-chip OHCI controller to the
Bamboo board's device-tree. This is enough to get it probed and
working, though a separate patch fixing a bug in the OHCI driver
is needed to make it reliable.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/boot/dts/bamboo.dts |    7 +++++++
 1 file changed, 7 insertions(+)

Index: linux-work/arch/powerpc/boot/dts/bamboo.dts
===================================================================
--- linux-work.orig/arch/powerpc/boot/dts/bamboo.dts	2007-11-26 10:11:09.000000000 +1100
+++ linux-work/arch/powerpc/boot/dts/bamboo.dts	2007-11-27 14:37:50.000000000 +1100
@@ -238,6 +238,13 @@
 				zmii-device = <&ZMII0>;
 				zmii-channel = <1>;
 			};
+
+			usb@ef601000 {
+				compatible = "ohci-be";
+				reg = <ef601000 80>;
+				interrupts = <8 1 9 1>;
+				interrupt-parent = < &UIC1 >;
+			};
 		};
 
 		PCI0: pci@ec000000 {

[PATCH 21/25] powerpc: Adds decoding of 440SPE memory size to boot wrapper library

[Benjamin Herrenschmidt]

This adds a function to the bootwrapper 4xx library to decode memory
size on 440SPE processors.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/boot/4xx.c             |   85 +++++++++++++++++++++++++++++-------
 arch/powerpc/boot/4xx.h             |    3 -
 arch/powerpc/boot/bamboo.c          |    2 
 arch/powerpc/boot/cuboot-taishan.c  |    2 
 arch/powerpc/boot/dcr.h             |   10 +++-
 arch/powerpc/boot/ebony.c           |    2 
 arch/powerpc/boot/treeboot-walnut.c |    2 
 7 files changed, 85 insertions(+), 21 deletions(-)

Index: linux-work/arch/powerpc/boot/4xx.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/4xx.c	2007-12-03 14:25:27.000000000 +1100
+++ linux-work/arch/powerpc/boot/4xx.c	2007-12-03 14:25:34.000000000 +1100
@@ -22,16 +22,14 @@
 #include "dcr.h"
 
 /* Read the 4xx SDRAM controller to get size of system memory. */
-void ibm4xx_fixup_memsize(void)
+void ibm4xx_sdram_fixup_memsize(void)
 {
 	int i;
 	unsigned long memsize, bank_config;
 
 	memsize = 0;
 	for (i = 0; i < ARRAY_SIZE(sdram_bxcr); i++) {
-		mtdcr(DCRN_SDRAM0_CFGADDR, sdram_bxcr[i]);
-		bank_config = mfdcr(DCRN_SDRAM0_CFGDATA);
-
+		bank_config = SDRAM0_READ(sdram_bxcr[i]);
 		if (bank_config & SDRAM_CONFIG_BANK_ENABLE)
 			memsize += SDRAM_CONFIG_BANK_SIZE(bank_config);
 	}
@@ -39,6 +37,69 @@ void ibm4xx_fixup_memsize(void)
 	dt_fixup_memory(0, memsize);
 }
 
+/* Read the 440SPe MQ controller to get size of system memory. */
+#define DCRN_MQ0_B0BAS		0x40
+#define DCRN_MQ0_B1BAS		0x41
+#define DCRN_MQ0_B2BAS		0x42
+#define DCRN_MQ0_B3BAS		0x43
+
+static u64 ibm440spe_decode_bas(u32 bas)
+{
+	u64 base = ((u64)(bas & 0xFFE00000u)) << 2;
+
+	/* open coded because I'm paranoid about invalid values */
+	switch ((bas >> 4) & 0xFFF) {
+	case 0:
+		return 0;
+	case 0xffc:
+		return base + 0x000800000ull;
+	case 0xff8:
+		return base + 0x001000000ull;
+	case 0xff0:
+		return base + 0x002000000ull;
+	case 0xfe0:
+		return base + 0x004000000ull;
+	case 0xfc0:
+		return base + 0x008000000ull;
+	case 0xf80:
+		return base + 0x010000000ull;
+	case 0xf00:
+		return base + 0x020000000ull;
+	case 0xe00:
+		return base + 0x040000000ull;
+	case 0xc00:
+		return base + 0x080000000ull;
+	case 0x800:
+		return base + 0x100000000ull;
+	}
+	printf("Memory BAS value 0x%08x unsupported !\n", bas);
+	return 0;
+}
+
+void ibm440spe_fixup_memsize(void)
+{
+	u64 banktop, memsize = 0;
+
+	/* Ultimately, we should directly construct the memory node
+	 * so we are able to handle holes in the memory address space
+	 */
+	banktop = ibm440spe_decode_bas(mfdcr(DCRN_MQ0_B0BAS));
+	if (banktop > memsize)
+		memsize = banktop;
+	banktop = ibm440spe_decode_bas(mfdcr(DCRN_MQ0_B1BAS));
+	if (banktop > memsize)
+		memsize = banktop;
+	banktop = ibm440spe_decode_bas(mfdcr(DCRN_MQ0_B2BAS));
+	if (banktop > memsize)
+		memsize = banktop;
+	banktop = ibm440spe_decode_bas(mfdcr(DCRN_MQ0_B3BAS));
+	if (banktop > memsize)
+		memsize = banktop;
+
+	dt_fixup_memory(0, memsize);
+}
+
+
 /* 4xx DDR1/2 Denali memory controller support */
 /* DDR0 registers */
 #define DDR0_02			2
@@ -77,19 +138,13 @@ void ibm4xx_fixup_memsize(void)
 
 #define DDR_GET_VAL(val, mask, shift)	(((val) >> (shift)) & (mask))
 
-static inline u32 mfdcr_sdram0(u32 reg)
-{
-        mtdcr(DCRN_SDRAM0_CFGADDR, reg);
-        return mfdcr(DCRN_SDRAM0_CFGDATA);
-}
-
 void ibm4xx_denali_fixup_memsize(void)
 {
 	u32 val, max_cs, max_col, max_row;
 	u32 cs, col, row, bank, dpath;
 	unsigned long memsize;
 
-	val = mfdcr_sdram0(DDR0_02);
+	val = SDRAM0_READ(DDR0_02);
 	if (!DDR_GET_VAL(val, DDR_START, DDR_START_SHIFT))
 		fatal("DDR controller is not initialized\n");
 
@@ -99,7 +154,7 @@ void ibm4xx_denali_fixup_memsize(void)
 	max_row = DDR_GET_VAL(val, DDR_MAX_ROW_REG, DDR_MAX_ROW_REG_SHIFT);
 
 	/* get CS value */
-	val = mfdcr_sdram0(DDR0_10);
+	val = SDRAM0_READ(DDR0_10);
 
 	val = DDR_GET_VAL(val, DDR_CS_MAP, DDR_CS_MAP_SHIFT);
 	cs = 0;
@@ -115,7 +170,7 @@ void ibm4xx_denali_fixup_memsize(void)
 		fatal("DDR wrong CS configuration\n");
 
 	/* get data path bytes */
-	val = mfdcr_sdram0(DDR0_14);
+	val = SDRAM0_READ(DDR0_14);
 
 	if (DDR_GET_VAL(val, DDR_REDUC, DDR_REDUC_SHIFT))
 		dpath = 8; /* 64 bits */
@@ -123,7 +178,7 @@ void ibm4xx_denali_fixup_memsize(void)
 		dpath = 4; /* 32 bits */
 
 	/* get adress pins (rows) */
-	val = mfdcr_sdram0(DDR0_42);
+	val = SDRAM0_READ(DDR0_42);
 
 	row = DDR_GET_VAL(val, DDR_APIN, DDR_APIN_SHIFT);
 	if (row > max_row)
@@ -131,7 +186,7 @@ void ibm4xx_denali_fixup_memsize(void)
 	row = max_row - row;
 
 	/* get collomn size and banks */
-	val = mfdcr_sdram0(DDR0_43);
+	val = SDRAM0_READ(DDR0_43);
 
 	col = DDR_GET_VAL(val, DDR_COL_SZ, DDR_COL_SZ_SHIFT);
 	if (col > max_col)
Index: linux-work/arch/powerpc/boot/4xx.h
===================================================================
--- linux-work.orig/arch/powerpc/boot/4xx.h	2007-12-03 14:25:27.000000000 +1100
+++ linux-work/arch/powerpc/boot/4xx.h	2007-12-03 14:25:34.000000000 +1100
@@ -11,7 +11,8 @@
 #ifndef _POWERPC_BOOT_4XX_H_
 #define _POWERPC_BOOT_4XX_H_
 
-void ibm4xx_fixup_memsize(void);
+void ibm4xx_sdram_fixup_memsize(void);
+void ibm440spe_fixup_memsize(void);
 void ibm4xx_denali_fixup_memsize(void);
 void ibm44x_dbcr_reset(void);
 void ibm40x_dbcr_reset(void);
Index: linux-work/arch/powerpc/boot/bamboo.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/bamboo.c	2007-12-03 14:25:27.000000000 +1100
+++ linux-work/arch/powerpc/boot/bamboo.c	2007-12-03 14:25:34.000000000 +1100
@@ -31,7 +31,7 @@ static void bamboo_fixups(void)
 	unsigned long sysclk = 33333333;
 
 	ibm440ep_fixup_clocks(sysclk, 11059200);
-	ibm4xx_fixup_memsize();
+	ibm4xx_sdram_fixup_memsize();
 	ibm4xx_quiesce_eth((u32 *)0xef600e00, (u32 *)0xef600f00);
 	dt_fixup_mac_addresses(bamboo_mac0, bamboo_mac1);
 }
Index: linux-work/arch/powerpc/boot/dcr.h
===================================================================
--- linux-work.orig/arch/powerpc/boot/dcr.h	2007-12-03 14:25:27.000000000 +1100
+++ linux-work/arch/powerpc/boot/dcr.h	2007-12-03 14:25:34.000000000 +1100
@@ -14,12 +14,20 @@
 #define DCRN_SDRAM0_CFGADDR				0x010
 #define DCRN_SDRAM0_CFGDATA				0x011
 
+#define SDRAM0_READ(offset) ({\
+	mtdcr(DCRN_SDRAM0_CFGADDR, offset); \
+	mfdcr(DCRN_SDRAM0_CFGDATA); })
+#define SDRAM0_WRITE(offset, data) ({\
+	mtdcr(DCRN_SDRAM0_CFGADDR, offset); \
+	mtdcr(DCRN_SDRAM0_CFGDATA, data); })
+
 #define 	SDRAM0_B0CR				0x40
 #define 	SDRAM0_B1CR				0x44
 #define 	SDRAM0_B2CR				0x48
 #define 	SDRAM0_B3CR				0x4c
 
-static const unsigned long sdram_bxcr[] = { SDRAM0_B0CR, SDRAM0_B1CR, SDRAM0_B2CR, SDRAM0_B3CR };
+static const unsigned long sdram_bxcr[] = { SDRAM0_B0CR, SDRAM0_B1CR,
+					    SDRAM0_B2CR, SDRAM0_B3CR };
 
 #define			SDRAM_CONFIG_BANK_ENABLE        0x00000001
 #define			SDRAM_CONFIG_SIZE_MASK          0x000e0000
Index: linux-work/arch/powerpc/boot/ebony.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/ebony.c	2007-12-03 14:25:27.000000000 +1100
+++ linux-work/arch/powerpc/boot/ebony.c	2007-12-03 14:25:34.000000000 +1100
@@ -134,7 +134,7 @@ static void ebony_fixups(void)
 	unsigned long sysclk = 33000000;
 
 	ibm440gp_fixup_clocks(sysclk, 6 * 1843200);
-	ibm4xx_fixup_memsize();
+	ibm4xx_sdram_fixup_memsize();
 	dt_fixup_mac_addresses(ebony_mac0, ebony_mac1);
 	ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
 	ebony_flashsel_fixup();
Index: linux-work/arch/powerpc/boot/treeboot-walnut.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/treeboot-walnut.c	2007-12-03 14:25:27.000000000 +1100
+++ linux-work/arch/powerpc/boot/treeboot-walnut.c	2007-12-03 14:25:34.000000000 +1100
@@ -63,7 +63,7 @@ static void walnut_flashsel_fixup(void)
 #define WALNUT_OPENBIOS_MAC_OFF 0xfffffe0b
 static void walnut_fixups(void)
 {
-	ibm4xx_fixup_memsize();
+	ibm4xx_sdram_fixup_memsize();
 	ibm405gp_fixup_clocks(33330000, 0xa8c000);
 	ibm4xx_quiesce_eth((u32 *)0xef600800, NULL);
 	ibm4xx_fixup_ebc_ranges("/plb/ebc");
Index: linux-work/arch/powerpc/boot/cuboot-taishan.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/cuboot-taishan.c	2007-12-03 14:25:27.000000000 +1100
+++ linux-work/arch/powerpc/boot/cuboot-taishan.c	2007-12-03 14:25:54.000000000 +1100
@@ -38,7 +38,7 @@ static void taishan_fixups(void)
 	   so we just use that code for now at least */
 	ibm440ep_fixup_clocks(sysclk, 6 * 1843200);
 
-	ibm4xx_fixup_memsize();
+	ibm4xx_sdram_fixup_memsize();
 
 	dt_fixup_mac_addresses(bd.bi_enetaddr, bd.bi_enet1addr);
 

Re: [PATCH 21/25] powerpc: Adds decoding of 440SPE memory size to boot wrapper library

[Josh Boyer]

On Thu, 06 Dec 2007 19:00:20 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> This adds a function to the bootwrapper 4xx library to decode memory
> size on 440SPE processors.

Why did you rename the fixup_memsize function?  Could you add that to
the changelog, and perhaps a bit about adding the SDRAM0_{READ,WRITE}
macros.

josh

Re: [PATCH 21/25] powerpc: Adds decoding of 440SPE memory size to boot wrapper library

[Benjamin Herrenschmidt]

On Thu, 2007-12-06 at 21:22 -0600, Josh Boyer wrote:
> On Thu, 06 Dec 2007 19:00:20 +1100
> Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> 
> > This adds a function to the bootwrapper 4xx library to decode memory
> > size on 440SPE processors.
> 
> Why did you rename the fixup_memsize function?  Could you add that to
> the changelog, and perhaps a bit about adding the SDRAM0_{READ,WRITE}
> macros

Because there's 3 fixup_*_memsize functions, felt it would be better
that they all have distinctive names no ? I don't see the need of
altering the changelog tho... If you don't know what those macros stand
for you probably should stay clear from those registers anyway.

Ben.

[PATCH 22/25] powerpc: Add mfspr/mtspr inline macros to 4xx bootwrapper

[Benjamin Herrenschmidt]

The 4xx bootwrapper occasionally needs to access SPR registers,
this adds mfspr/mtspr wrappers to it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

===================================================================
 arch/powerpc/boot/reg.h |    8 ++++++++
 1 file changed, 8 insertions(+)

Index: linux-work/arch/powerpc/boot/reg.h
===================================================================
--- linux-work.orig/arch/powerpc/boot/reg.h	2007-12-03 11:48:00.000000000 +1100
+++ linux-work/arch/powerpc/boot/reg.h	2007-12-03 13:44:06.000000000 +1100
@@ -16,6 +16,14 @@ static inline u32 mfpvr(void)
 	return pvr;
 }
 
+#define __stringify_1(x)	#x
+#define __stringify(x)		__stringify_1(x)
+
+#define mfspr(rn)	({unsigned long rval; \
+			asm volatile("mfspr %0," __stringify(rn) \
+				: "=r" (rval)); rval; })
+#define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
+
 register void *__stack_pointer asm("r1");
 #define get_sp()	(__stack_pointer)
 

[PATCH 23/25] powerpc: Rework 4xx clock probing in boot wrapper

[Benjamin Herrenschmidt]

This reworks the boot wrapper library function that probes
the chip clocks. Better separate the base function that is
used on 440GX,SPe,EP,... from the uart fixups as those need
different device-tree path on different processors.

Also, rework the function itself based on the arch/ppc code
from Eugene Surovegin which I find more readable, and which
handles one more bypass case. Also handle the subtle difference
between 440EP/EPx and 440SPe/GX, on the former, PerClk is derived
from the PLB clock while on the later, it's derived from the OPB. 

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/boot/4xx.c            |  272 +++++++++++++++++++++++++++----------
 arch/powerpc/boot/4xx.h            |   11 +
 arch/powerpc/boot/bamboo.c         |    2 
 arch/powerpc/boot/cuboot-sequoia.c |    2 
 arch/powerpc/boot/cuboot-taishan.c |    4 
 arch/powerpc/boot/dcr.h            |   17 ++
 arch/powerpc/boot/ebony.c          |   60 --------
 arch/powerpc/boot/reg.h            |    8 +
 8 files changed, 241 insertions(+), 135 deletions(-)

Index: linux-work/arch/powerpc/boot/4xx.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/4xx.c	2007-12-03 14:25:34.000000000 +1100
+++ linux-work/arch/powerpc/boot/4xx.c	2007-12-03 14:26:09.000000000 +1100
@@ -275,89 +275,225 @@ void ibm4xx_fixup_ebc_ranges(const char 
 	setprop(devp, "ranges", ranges, (p - ranges) * sizeof(u32));
 }
 
-#define SPRN_CCR1 0x378
-void ibm440ep_fixup_clocks(unsigned int sysclk, unsigned int ser_clk)
+/* Calculate 440GP clocks */
+void ibm440gp_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk)
 {
-	u32 cpu, plb, opb, ebc, tb, uart0, m, vco;
-	u32 reg;
-	u32 fwdva, fwdvb, fbdv, lfbdv, opbdv0, perdv0, spcid0, prbdv0, tmp;
-
-	mtdcr(DCRN_CPR0_ADDR, CPR0_PLLD0);
-	reg = mfdcr(DCRN_CPR0_DATA);
-	tmp = (reg & 0x000F0000) >> 16;
-	fwdva = tmp ? tmp : 16;
-	tmp = (reg & 0x00000700) >> 8;
-	fwdvb = tmp ? tmp : 8;
-	tmp = (reg & 0x1F000000) >> 24;
-	fbdv = tmp ? tmp : 32;
-	lfbdv = (reg & 0x0000007F);
-
-	mtdcr(DCRN_CPR0_ADDR, CPR0_OPBD0);
-	reg = mfdcr(DCRN_CPR0_DATA);
-	tmp = (reg & 0x03000000) >> 24;
-	opbdv0 = tmp ? tmp : 4;
-
-	mtdcr(DCRN_CPR0_ADDR, CPR0_PERD0);
-	reg = mfdcr(DCRN_CPR0_DATA);
-	tmp = (reg & 0x07000000) >> 24;
-	perdv0 = tmp ? tmp : 8;
-
-	mtdcr(DCRN_CPR0_ADDR, CPR0_PRIMBD0);
-	reg = mfdcr(DCRN_CPR0_DATA);
-	tmp = (reg & 0x07000000) >> 24;
-	prbdv0 = tmp ? tmp : 8;
-
-	mtdcr(DCRN_CPR0_ADDR, CPR0_SCPID);
-	reg = mfdcr(DCRN_CPR0_DATA);
-	tmp = (reg & 0x03000000) >> 24;
-	spcid0 = tmp ? tmp : 4;
-
-	/* Calculate M */
-	mtdcr(DCRN_CPR0_ADDR, CPR0_PLLC0);
-	reg = mfdcr(DCRN_CPR0_DATA);
-	tmp = (reg & 0x03000000) >> 24;
-	if (tmp == 0) { /* PLL output */
-		tmp = (reg & 0x20000000) >> 29;
-		if (!tmp) /* PLLOUTA */
-			m = fbdv * lfbdv * fwdva;
+	u32 sys0 = mfdcr(DCRN_CPC0_SYS0);
+	u32 cr0 = mfdcr(DCRN_CPC0_CR0);
+	u32 cpu, plb, opb, ebc, tb, uart0, uart1, m;
+	u32 opdv = CPC0_SYS0_OPDV(sys0);
+	u32 epdv = CPC0_SYS0_EPDV(sys0);
+
+	if (sys0 & CPC0_SYS0_BYPASS) {
+		/* Bypass system PLL */
+		cpu = plb = sys_clk;
+	} else {
+		if (sys0 & CPC0_SYS0_EXTSL)
+			/* PerClk */
+			m = CPC0_SYS0_FWDVB(sys0) * opdv * epdv;
 		else
-			m = fbdv * lfbdv * fwdvb;
+			/* CPU clock */
+			m = CPC0_SYS0_FBDV(sys0) * CPC0_SYS0_FWDVA(sys0);
+		cpu = sys_clk * m / CPC0_SYS0_FWDVA(sys0);
+		plb = sys_clk * m / CPC0_SYS0_FWDVB(sys0);
 	}
-	else if (tmp == 1) /* CPU output */
-		m = fbdv * fwdva;
+
+	opb = plb / opdv;
+	ebc = opb / epdv;
+
+	/* FIXME: Check if this is for all 440GP, or just Ebony */
+	if ((mfpvr() & 0xf0000fff) == 0x40000440)
+		/* Rev. B 440GP, use external system clock */
+		tb = sys_clk;
 	else
-		m = perdv0 * opbdv0 * fwdvb;
+		/* Rev. C 440GP, errata force us to use internal clock */
+		tb = cpu;
 
-	vco = (m * sysclk) + (m >> 1);
-	cpu = vco / fwdva;
-	plb = vco / fwdvb / prbdv0;
-	opb = plb / opbdv0;
-	ebc = plb / perdv0;
+	if (cr0 & CPC0_CR0_U0EC)
+		/* External UART clock */
+		uart0 = ser_clk;
+	else
+		/* Internal UART clock */
+		uart0 = plb / CPC0_CR0_UDIV(cr0);
 
-	/* FIXME */
-	uart0 = ser_clk;
+	if (cr0 & CPC0_CR0_U1EC)
+		/* External UART clock */
+		uart1 = ser_clk;
+	else
+		/* Internal UART clock */
+		uart1 = plb / CPC0_CR0_UDIV(cr0);
+
+	printf("PPC440GP: SysClk = %dMHz (%x)\n\r",
+	       (sys_clk + 500000) / 1000000, sys_clk);
+
+	dt_fixup_cpu_clocks(cpu, tb, 0);
+
+	dt_fixup_clock("/plb", plb);
+	dt_fixup_clock("/plb/opb", opb);
+	dt_fixup_clock("/plb/opb/ebc", ebc);
+	dt_fixup_clock("/plb/opb/serial@40000200", uart0);
+	dt_fixup_clock("/plb/opb/serial@40000300", uart1);
+}
+
+#define SPRN_CCR1 0x378
+
+static inline u32 __fix_zero(u32 v, u32 def)
+{
+	return v ? v : def;
+}
+
+static unsigned int __ibm440eplike_fixup_clocks(unsigned int sys_clk,
+						unsigned int tmr_clk,
+						int per_clk_from_opb)
+{
+	/* PLL config */
+	u32 pllc  = CPR0_READ(DCRN_CPR0_PLLC);
+	u32 plld  = CPR0_READ(DCRN_CPR0_PLLD);
+
+	/* Dividers */
+	u32 fbdv   = __fix_zero((plld >> 24) & 0x1f, 32);
+	u32 fwdva  = __fix_zero((plld >> 16) & 0xf, 16);
+	u32 fwdvb  = __fix_zero((plld >> 8) & 7, 8);
+	u32 lfbdv  = __fix_zero(plld & 0x3f, 64);
+	u32 pradv0 = __fix_zero((CPR0_READ(DCRN_CPR0_PRIMAD) >> 24) & 7, 8);
+	u32 prbdv0 = __fix_zero((CPR0_READ(DCRN_CPR0_PRIMBD) >> 24) & 7, 8);
+	u32 opbdv0 = __fix_zero((CPR0_READ(DCRN_CPR0_OPBD) >> 24) & 3, 4);
+	u32 perdv0 = __fix_zero((CPR0_READ(DCRN_CPR0_PERD) >> 24) & 3, 4);
+
+	/* Input clocks for primary dividers */
+	u32 clk_a, clk_b;
+
+	/* Resulting clocks */
+	u32 cpu, plb, opb, ebc, vco;
+
+	/* Timebase */
+	u32 ccr1, tb = tmr_clk;
+
+	if (pllc & 0x40000000) {
+		u32 m;
+
+		/* Feedback path */
+		switch ((pllc >> 24) & 7) {
+		case 0:
+			/* PLLOUTx */
+			m = ((pllc & 0x20000000) ? fwdvb : fwdva) * lfbdv;
+			break;
+		case 1:
+			/* CPU */
+			m = fwdva * pradv0;
+			break;
+		case 5:
+			/* PERClk */
+			m = fwdvb * prbdv0 * opbdv0 * perdv0;
+			break;
+		default:
+			printf("WARNING ! Invalid PLL feedback source !\n");
+			goto bypass;
+		}
+		m *= fbdv;
+		vco = sys_clk * m;
+		clk_a = vco / fwdva;
+		clk_b = vco / fwdvb;
+	} else {
+bypass:
+		/* Bypass system PLL */
+		vco = 0;
+		clk_a = clk_b = sys_clk;
+	}
+
+	cpu = clk_a / pradv0;
+	plb = clk_b / prbdv0;
+	opb = plb / opbdv0;
+	ebc = (per_clk_from_opb ? opb : plb) / perdv0;
 
 	/* Figure out timebase.  Either CPU or default TmrClk */
-	asm volatile (
-			"mfspr	%0,%1\n"
-			:
-			"=&r"(reg) : "i"(SPRN_CCR1));
-	if (reg & 0x0080)
-		tb = 25000000; /* TmrClk is 25MHz */
-	else
+	ccr1 = mfspr(SPRN_CCR1);
+
+	/* If passed a 0 tmr_clk, force CPU clock */
+	if (tb == 0) {
+		ccr1 &= ~0x80u;
+		mtspr(SPRN_CCR1, ccr1);
+	}
+	if ((ccr1 & 0x0080) == 0)
 		tb = cpu;
 
 	dt_fixup_cpu_clocks(cpu, tb, 0);
 	dt_fixup_clock("/plb", plb);
 	dt_fixup_clock("/plb/opb", opb);
 	dt_fixup_clock("/plb/opb/ebc", ebc);
-	dt_fixup_clock("/plb/opb/serial@ef600300", uart0);
-	dt_fixup_clock("/plb/opb/serial@ef600400", uart0);
-	dt_fixup_clock("/plb/opb/serial@ef600500", uart0);
-	dt_fixup_clock("/plb/opb/serial@ef600600", uart0);
+
+	return plb;
+}
+
+static void eplike_fixup_uart_clk(int index, const char *path,
+				  unsigned int ser_clk,
+				  unsigned int plb_clk)
+{
+	unsigned int sdr;
+	unsigned int clock;
+
+	switch (index) {
+	case 0:
+		sdr = SDR0_READ(DCRN_SDR0_UART0);
+		break;
+	case 1:
+		sdr = SDR0_READ(DCRN_SDR0_UART1);
+		break;
+	case 2:
+		sdr = SDR0_READ(DCRN_SDR0_UART2);
+		break;
+	case 3:
+		sdr = SDR0_READ(DCRN_SDR0_UART3);
+		break;
+	default:
+		return;
+	}
+
+	if (sdr & 0x00800000u)
+		clock = ser_clk;
+	else
+		clock = plb_clk / __fix_zero(sdr & 0xff, 256);
+
+	dt_fixup_clock(path, clock);
+}
+
+void ibm440ep_fixup_clocks(unsigned int sys_clk,
+			   unsigned int ser_clk,
+			   unsigned int tmr_clk)
+{
+	unsigned int plb_clk = __ibm440eplike_fixup_clocks(sys_clk, tmr_clk, 0);
+
+	/* serial clocks beed fixup based on int/ext */
+	eplike_fixup_uart_clk(0, "/plb/opb/serial@ef600300", ser_clk, plb_clk);
+	eplike_fixup_uart_clk(1, "/plb/opb/serial@ef600400", ser_clk, plb_clk);
+	eplike_fixup_uart_clk(2, "/plb/opb/serial@ef600500", ser_clk, plb_clk);
+	eplike_fixup_uart_clk(3, "/plb/opb/serial@ef600600", ser_clk, plb_clk);
+}
+
+void ibm440gx_fixup_clocks(unsigned int sys_clk,
+			   unsigned int ser_clk,
+			   unsigned int tmr_clk)
+{
+	unsigned int plb_clk = __ibm440eplike_fixup_clocks(sys_clk, tmr_clk, 1);
+
+	/* serial clocks beed fixup based on int/ext */
+	eplike_fixup_uart_clk(0, "/plb/opb/serial@40000200", ser_clk, plb_clk);
+	eplike_fixup_uart_clk(1, "/plb/opb/serial@40000300", ser_clk, plb_clk);
+}
+
+void ibm440spe_fixup_clocks(unsigned int sys_clk,
+			    unsigned int ser_clk,
+			    unsigned int tmr_clk)
+{
+	unsigned int plb_clk = __ibm440eplike_fixup_clocks(sys_clk, tmr_clk, 1);
+
+	/* serial clocks beed fixup based on int/ext */
+	eplike_fixup_uart_clk(0, "/plb/opb/serial@10000200", ser_clk, plb_clk);
+	eplike_fixup_uart_clk(1, "/plb/opb/serial@10000300", ser_clk, plb_clk);
+	eplike_fixup_uart_clk(2, "/plb/opb/serial@10000600", ser_clk, plb_clk);
 }
 
-void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk)
+void ibm405gp_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk)
 {
 	u32 pllmr = mfdcr(DCRN_CPC0_PLLMR);
 	u32 cpc0_cr0 = mfdcr(DCRN_405_CPC0_CR0);
@@ -374,7 +510,7 @@ void ibm405gp_fixup_clocks(unsigned int 
 
 	m = fwdv * fbdv * cbdv;
 
-	cpu = sysclk * m / fwdv;
+	cpu = sys_clk * m / fwdv;
 	plb = cpu / cbdv;
 	opb = plb / opdv;
 	ebc = plb / epdv;
Index: linux-work/arch/powerpc/boot/4xx.h
===================================================================
--- linux-work.orig/arch/powerpc/boot/4xx.h	2007-12-03 14:25:34.000000000 +1100
+++ linux-work/arch/powerpc/boot/4xx.h	2007-12-03 14:26:09.000000000 +1100
@@ -18,7 +18,14 @@ void ibm44x_dbcr_reset(void);
 void ibm40x_dbcr_reset(void);
 void ibm4xx_quiesce_eth(u32 *emac0, u32 *emac1);
 void ibm4xx_fixup_ebc_ranges(const char *ebc);
-void ibm440ep_fixup_clocks(unsigned int sysclk, unsigned int ser_clk);
-void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk);
+
+void ibm405gp_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk);
+void ibm440gp_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk);
+void ibm440ep_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk,
+			   unsigned int tmr_clk);
+void ibm440gx_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk,
+			   unsigned int tmr_clk);
+void ibm440spe_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk,
+			    unsigned int tmr_clk);
 
 #endif /* _POWERPC_BOOT_4XX_H_ */
Index: linux-work/arch/powerpc/boot/ebony.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/ebony.c	2007-12-03 14:25:34.000000000 +1100
+++ linux-work/arch/powerpc/boot/ebony.c	2007-12-03 14:26:09.000000000 +1100
@@ -31,66 +31,6 @@
 
 static u8 *ebony_mac0, *ebony_mac1;
 
-/* Calculate 440GP clocks */
-void ibm440gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk)
-{
-	u32 sys0 = mfdcr(DCRN_CPC0_SYS0);
-	u32 cr0 = mfdcr(DCRN_CPC0_CR0);
-	u32 cpu, plb, opb, ebc, tb, uart0, uart1, m;
-	u32 opdv = CPC0_SYS0_OPDV(sys0);
-	u32 epdv = CPC0_SYS0_EPDV(sys0);
-
-	if (sys0 & CPC0_SYS0_BYPASS) {
-		/* Bypass system PLL */
-		cpu = plb = sysclk;
-	} else {
-		if (sys0 & CPC0_SYS0_EXTSL)
-			/* PerClk */
-			m = CPC0_SYS0_FWDVB(sys0) * opdv * epdv;
-		else
-			/* CPU clock */
-			m = CPC0_SYS0_FBDV(sys0) * CPC0_SYS0_FWDVA(sys0);
-		cpu = sysclk * m / CPC0_SYS0_FWDVA(sys0);
-		plb = sysclk * m / CPC0_SYS0_FWDVB(sys0);
-	}
-
-	opb = plb / opdv;
-	ebc = opb / epdv;
-
-	/* FIXME: Check if this is for all 440GP, or just Ebony */
-	if ((mfpvr() & 0xf0000fff) == 0x40000440)
-		/* Rev. B 440GP, use external system clock */
-		tb = sysclk;
-	else
-		/* Rev. C 440GP, errata force us to use internal clock */
-		tb = cpu;
-
-	if (cr0 & CPC0_CR0_U0EC)
-		/* External UART clock */
-		uart0 = ser_clk;
-	else
-		/* Internal UART clock */
-		uart0 = plb / CPC0_CR0_UDIV(cr0);
-
-	if (cr0 & CPC0_CR0_U1EC)
-		/* External UART clock */
-		uart1 = ser_clk;
-	else
-		/* Internal UART clock */
-		uart1 = plb / CPC0_CR0_UDIV(cr0);
-
-	printf("PPC440GP: SysClk = %dMHz (%x)\n\r",
-	       (sysclk + 500000) / 1000000, sysclk);
-
-	dt_fixup_cpu_clocks(cpu, tb, 0);
-
-	dt_fixup_clock("/plb", plb);
-	dt_fixup_clock("/plb/opb", opb);
-	dt_fixup_clock("/plb/opb/ebc", ebc);
-	dt_fixup_clock("/plb/opb/serial@40000200", uart0);
-	dt_fixup_clock("/plb/opb/serial@40000300", uart1);
-}
-
 #define EBONY_FPGA_PATH		"/plb/opb/ebc/fpga"
 #define	EBONY_FPGA_FLASH_SEL	0x01
 #define EBONY_SMALL_FLASH_PATH	"/plb/opb/ebc/small-flash"
Index: linux-work/arch/powerpc/boot/dcr.h
===================================================================
--- linux-work.orig/arch/powerpc/boot/dcr.h	2007-12-03 14:25:34.000000000 +1100
+++ linux-work/arch/powerpc/boot/dcr.h	2007-12-03 14:26:09.000000000 +1100
@@ -160,6 +160,23 @@ static const unsigned long sdram_bxcr[] 
 #define DCRN_CPR0_PERD					0x0e0
 #define DCRN_CPR0_MALD					0x100
 
+#define DCRN_SDR0_CONFIG_ADDR 	0xe
+#define DCRN_SDR0_CONFIG_DATA	0xf
+
+/* SDR read/write helper macros */
+#define SDR0_READ(offset) ({\
+	mtdcr(DCRN_SDR0_CONFIG_ADDR, offset); \
+	mfdcr(DCRN_SDR0_CONFIG_DATA); })
+#define SDR0_WRITE(offset, data) ({\
+	mtdcr(DCRN_SDR0_CONFIG_ADDR, offset); \
+	mtdcr(DCRN_SDR0_CONFIG_DATA, data); })
+
+#define DCRN_SDR0_UART0		0x0120
+#define DCRN_SDR0_UART1		0x0121
+#define DCRN_SDR0_UART2		0x0122
+#define DCRN_SDR0_UART3		0x0123
+
+
 /* CPRs read/write helper macros - based off include/asm-ppc/ibm44x.h */
 
 #define DCRN_CPR0_CFGADDR				0xc
Index: linux-work/arch/powerpc/boot/reg.h
===================================================================
--- linux-work.orig/arch/powerpc/boot/reg.h	2007-12-03 14:26:09.000000000 +1100
+++ linux-work/arch/powerpc/boot/reg.h	2007-12-03 14:26:09.000000000 +1100
@@ -24,6 +24,14 @@ static inline u32 mfpvr(void)
 				: "=r" (rval)); rval; })
 #define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
 
+#define __stringify_1(x)	#x
+#define __stringify(x)		__stringify_1(x)
+
+#define mfspr(rn)	({unsigned long rval; \
+			asm volatile("mfspr %0," __stringify(rn) \
+				: "=r" (rval)); rval; })
+#define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
+
 register void *__stack_pointer asm("r1");
 #define get_sp()	(__stack_pointer)
 
Index: linux-work/arch/powerpc/boot/bamboo.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/bamboo.c	2007-12-03 14:25:34.000000000 +1100
+++ linux-work/arch/powerpc/boot/bamboo.c	2007-12-03 14:26:09.000000000 +1100
@@ -30,7 +30,7 @@ static void bamboo_fixups(void)
 {
 	unsigned long sysclk = 33333333;
 
-	ibm440ep_fixup_clocks(sysclk, 11059200);
+	ibm440ep_fixup_clocks(sysclk, 11059200, 25000000);
 	ibm4xx_sdram_fixup_memsize();
 	ibm4xx_quiesce_eth((u32 *)0xef600e00, (u32 *)0xef600f00);
 	dt_fixup_mac_addresses(bamboo_mac0, bamboo_mac1);
Index: linux-work/arch/powerpc/boot/cuboot-sequoia.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/cuboot-sequoia.c	2007-12-03 14:25:25.000000000 +1100
+++ linux-work/arch/powerpc/boot/cuboot-sequoia.c	2007-12-03 14:26:09.000000000 +1100
@@ -39,7 +39,7 @@ static void sequoia_fixups(void)
 {
 	unsigned long sysclk = 33333333;
 
-	ibm440ep_fixup_clocks(sysclk, 11059200);
+	ibm440ep_fixup_clocks(sysclk, 11059200, 25000000);
 	ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
 	ibm4xx_denali_fixup_memsize();
 	dt_fixup_mac_addresses(&bd.bi_enetaddr, &bd.bi_enet1addr);
Index: linux-work/arch/powerpc/boot/cuboot-taishan.c
===================================================================
--- linux-work.orig/arch/powerpc/boot/cuboot-taishan.c	2007-12-03 14:25:54.000000000 +1100
+++ linux-work/arch/powerpc/boot/cuboot-taishan.c	2007-12-03 14:26:09.000000000 +1100
@@ -34,9 +34,7 @@ static void taishan_fixups(void)
 	   registers */
 	unsigned long sysclk = 33000000;
 
-	/* 440EP Clock logic is all but identical to 440GX
-	   so we just use that code for now at least */
-	ibm440ep_fixup_clocks(sysclk, 6 * 1843200);
+	ibm440gx_fixup_clocks(sysclk, 6 * 1843200, 25000000);
 
 	ibm4xx_sdram_fixup_memsize();
 

Re: [PATCH 23/25] powerpc: Rework 4xx clock probing in boot wrapper

[Josh Boyer]

On Thu, 06 Dec 2007 19:00:22 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> Index: linux-work/arch/powerpc/boot/reg.h
> ===================================================================
> --- linux-work.orig/arch/powerpc/boot/reg.h	2007-12-03 14:26:09.000000000 +1100
> +++ linux-work/arch/powerpc/boot/reg.h	2007-12-03 14:26:09.000000000 +1100
> @@ -24,6 +24,14 @@ static inline u32 mfpvr(void)
>  				: "=r" (rval)); rval; })
>  #define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
> 
> +#define __stringify_1(x)	#x
> +#define __stringify(x)		__stringify_1(x)
> +
> +#define mfspr(rn)	({unsigned long rval; \
> +			asm volatile("mfspr %0," __stringify(rn) \
> +				: "=r" (rval)); rval; })
> +#define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
> +

You felt like duplicating this?  It was added in the previous patch. :)

josh

Re: [PATCH 23/25] powerpc: Rework 4xx clock probing in boot wrapper

[Benjamin Herrenschmidt]

On Thu, 2007-12-06 at 21:27 -0600, Josh Boyer wrote:
> On Thu, 06 Dec 2007 19:00:22 +1100
> Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> 
> > Index: linux-work/arch/powerpc/boot/reg.h
> > ===================================================================
> > --- linux-work.orig/arch/powerpc/boot/reg.h	2007-12-03 14:26:09.000000000 +1100
> > +++ linux-work/arch/powerpc/boot/reg.h	2007-12-03 14:26:09.000000000 +1100
> > @@ -24,6 +24,14 @@ static inline u32 mfpvr(void)
> >  				: "=r" (rval)); rval; })
> >  #define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
> > 
> > +#define __stringify_1(x)	#x
> > +#define __stringify(x)		__stringify_1(x)
> > +
> > +#define mfspr(rn)	({unsigned long rval; \
> > +			asm volatile("mfspr %0," __stringify(rn) \
> > +				: "=r" (rval)); rval; })
> > +#define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
> > +
> 
> You felt like duplicating this?  It was added in the previous patch. :)

Ah yes, it's a typical mistake when splitting patches, sometimes, it
doesn't complain when the same hunk is applied multiple times. I'll fix
that up.

Ben.
 

Re: [PATCH 23/25] powerpc: Rework 4xx clock probing in boot wrapper

[Benjamin Herrenschmidt]

On Thu, 2007-12-06 at 21:27 -0600, Josh Boyer wrote:
> On Thu, 06 Dec 2007 19:00:22 +1100
> Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> 
> > Index: linux-work/arch/powerpc/boot/reg.h
> > ===================================================================
> > --- linux-work.orig/arch/powerpc/boot/reg.h	2007-12-03 14:26:09.000000000 +1100
> > +++ linux-work/arch/powerpc/boot/reg.h	2007-12-03 14:26:09.000000000 +1100
> > @@ -24,6 +24,14 @@ static inline u32 mfpvr(void)
> >  				: "=r" (rval)); rval; })
> >  #define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
> > 
> > +#define __stringify_1(x)	#x
> > +#define __stringify(x)		__stringify_1(x)
> > +
> > +#define mfspr(rn)	({unsigned long rval; \
> > +			asm volatile("mfspr %0," __stringify(rn) \
> > +				: "=r" (rval)); rval; })
> > +#define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
> > +
> 
> You felt like duplicating this?  It was added in the previous patch. :)

Want a new patch or can you just remove that bit ?

Ben.

Re: [PATCH 23/25] powerpc: Rework 4xx clock probing in boot wrapper

[Josh Boyer]

On Mon, 10 Dec 2007 16:43:31 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> 
> On Thu, 2007-12-06 at 21:27 -0600, Josh Boyer wrote:
> > On Thu, 06 Dec 2007 19:00:22 +1100
> > Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> > 
> > > Index: linux-work/arch/powerpc/boot/reg.h
> > > ===================================================================
> > > --- linux-work.orig/arch/powerpc/boot/reg.h	2007-12-03 14:26:09.000000000 +1100
> > > +++ linux-work/arch/powerpc/boot/reg.h	2007-12-03 14:26:09.000000000 +1100
> > > @@ -24,6 +24,14 @@ static inline u32 mfpvr(void)
> > >  				: "=r" (rval)); rval; })
> > >  #define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
> > > 
> > > +#define __stringify_1(x)	#x
> > > +#define __stringify(x)		__stringify_1(x)
> > > +
> > > +#define mfspr(rn)	({unsigned long rval; \
> > > +			asm volatile("mfspr %0," __stringify(rn) \
> > > +				: "=r" (rval)); rval; })
> > > +#define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
> > > +
> > 
> > You felt like duplicating this?  It was added in the previous patch. :)
> 
> Want a new patch or can you just remove that bit ?

I can remove it on my final apply.

josh

[PATCH 24/25] powerpc: Base support for 440SPe "Katmai" eval board

[Benjamin Herrenschmidt]

This adds base support for the Katmai board, including PCI-X and
PCI-Express (but no RTC, nvram, etc... yet).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

As for Taishan, the bootwrapper code can be simplified. In fact,
we probably don't need to probe clocks & memsize off the chip and
just trust what uboot tells us.

 arch/powerpc/boot/Makefile          |    5 
 arch/powerpc/boot/cuboot-katmai.c   |   56 +++++
 arch/powerpc/boot/dts/katmai.dts    |  393 ++++++++++++++++++++++++++++++++++++
 arch/powerpc/platforms/44x/Kconfig  |   13 +
 arch/powerpc/platforms/44x/Makefile |    3 
 arch/powerpc/platforms/44x/katmai.c |   63 +++++
 6 files changed, 531 insertions(+), 2 deletions(-)

Index: linux-work/arch/powerpc/platforms/44x/Kconfig
===================================================================
--- linux-work.orig/arch/powerpc/platforms/44x/Kconfig	2007-12-05 11:58:28.000000000 +1100
+++ linux-work/arch/powerpc/platforms/44x/Kconfig	2007-12-05 11:58:32.000000000 +1100
@@ -30,6 +30,15 @@ config TAISHAN
 	help
 	  This option enables support for the IBM PPC440GX "Taishan" evaluation board.
 
+config KATMAI
+	bool "Katmai"
+	depends on 44x
+	default n
+	select 440SPe
+	select PPC4xx_PCI_EXPRESS
+	help
+	  This option enables support for the AMCC PPC440SPe evaluation board.
+
 #config LUAN
 #	bool "Luan"
 #	depends on 44x
@@ -74,6 +83,10 @@ config 440GX
 config 440SP
 	bool
 
+config 440SPe
+        select IBM_NEW_EMAC_EMAC4
+	bool
+
 # 44x errata/workaround config symbols, selected by the CPU models above
 config IBM440EP_ERR42
 	bool
Index: linux-work/arch/powerpc/platforms/44x/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/platforms/44x/Makefile	2007-12-05 11:58:28.000000000 +1100
+++ linux-work/arch/powerpc/platforms/44x/Makefile	2007-12-05 11:58:32.000000000 +1100
@@ -1,5 +1,6 @@
 obj-$(CONFIG_44x)	:= misc_44x.o
 obj-$(CONFIG_EBONY)	+= ebony.o
 obj-$(CONFIG_TAISHAN)	+= taishan.o
-obj-$(CONFIG_BAMBOO) += bamboo.o
+obj-$(CONFIG_BAMBOO)	+= bamboo.o
 obj-$(CONFIG_SEQUOIA)	+= sequoia.o
+obj-$(CONFIG_KATMAI)	+= katmai.o
Index: linux-work/arch/powerpc/boot/dts/katmai.dts
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/boot/dts/katmai.dts	2007-12-05 12:00:37.000000000 +1100
@@ -0,0 +1,393 @@
+/*
+ * Device Tree Source for AMCC Katmai eval board
+ *
+ * Copyright (c) 2006, 2007 IBM Corp.
+ * Benjamin Herrenschmidt <benh@kernel.crashing.org>
+ *
+ * Copyright (c) 2006, 2007 IBM Corp.
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <1>;
+	model = "amcc,katmai";
+	compatible = "amcc,katmai";
+	dcr-parent = <&/cpus/PowerPC,440SPe@0>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,440SPe@0 {
+			device_type = "cpu";
+			reg = <0>;
+			clock-frequency = <0>; /* Filled in by zImage */
+			timebase-frequency = <0>; /* Filled in by zImage */
+			i-cache-line-size = <20>;
+			d-cache-line-size = <20>;
+			i-cache-size = <20000>;
+			d-cache-size = <20000>;
+			dcr-controller;
+			dcr-access-method = "native";
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0 0 0>; /* Filled in by zImage */
+	};
+
+	UIC0: interrupt-controller0 {
+		compatible = "ibm,uic-440spe","ibm,uic";
+		interrupt-controller;
+		cell-index = <0>;
+		dcr-reg = <0c0 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+	};
+
+	UIC1: interrupt-controller1 {
+		compatible = "ibm,uic-440spe","ibm,uic";
+		interrupt-controller;
+		cell-index = <1>;
+		dcr-reg = <0d0 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <1e 4 1f 4>; /* cascade */
+		interrupt-parent = <&UIC0>;
+	};
+
+	UIC2: interrupt-controller2 {
+		compatible = "ibm,uic-440spe","ibm,uic";
+		interrupt-controller;
+		cell-index = <2>;
+		dcr-reg = <0e0 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <a 4 b 4>; /* cascade */
+		interrupt-parent = <&UIC0>;
+	};
+
+	UIC3: interrupt-controller3 {
+		compatible = "ibm,uic-440spe","ibm,uic";
+		interrupt-controller;
+		cell-index = <3>;
+		dcr-reg = <0f0 009>;
+		#address-cells = <0>;
+		#size-cells = <0>;
+		#interrupt-cells = <2>;
+		interrupts = <10 4 11 4>; /* cascade */
+		interrupt-parent = <&UIC0>;
+	};
+
+	SDR0: sdr {
+		compatible = "ibm,sdr-440spe";
+		dcr-reg = <00e 002>;
+	};
+
+	CPR0: cpr {
+		compatible = "ibm,cpr-440spe";
+		dcr-reg = <00c 002>;
+	};
+
+	plb {
+		compatible = "ibm,plb-440spe", "ibm,plb-440gp", "ibm,plb4";
+		#address-cells = <2>;
+		#size-cells = <1>;
+		ranges;
+		clock-frequency = <0>; /* Filled in by zImage */
+
+		SDRAM0: sdram {
+			compatible = "ibm,sdram-440spe", "ibm,sdram-405gp";
+			dcr-reg = <010 2>;
+		};
+
+		MAL0: mcmal {
+			compatible = "ibm,mcmal-440spe", "ibm,mcmal2";
+			dcr-reg = <180 62>;
+			num-tx-chans = <2>;
+			num-rx-chans = <1>;
+			interrupt-parent = <&MAL0>;
+			interrupts = <0 1 2 3 4>;
+			#interrupt-cells = <1>;
+			#address-cells = <0>;
+			#size-cells = <0>;
+			interrupt-map = </*TXEOB*/ 0 &UIC1 6 4
+					 /*RXEOB*/ 1 &UIC1 7 4
+					 /*SERR*/  2 &UIC1 1 4
+					 /*TXDE*/  3 &UIC1 2 4
+					 /*RXDE*/  4 &UIC1 3 4>;
+		};
+
+		POB0: opb {
+		  	compatible = "ibm,opb-440spe", "ibm,opb-440gp", "ibm,opb";
+			#address-cells = <1>;
+			#size-cells = <1>;
+		  	ranges = <00000000 4 e0000000 20000000>;
+		  	clock-frequency = <0>; /* Filled in by zImage */
+
+			EBC0: ebc {
+				compatible = "ibm,ebc-440spe", "ibm,ebc-440gp", "ibm,ebc";
+				dcr-reg = <012 2>;
+				#address-cells = <2>;
+				#size-cells = <1>;
+				clock-frequency = <0>; /* Filled in by zImage */
+				ranges;
+				interrupts = <5 1>;
+				interrupt-parent = <&UIC1>;
+			};
+
+			UART0: serial@10000200 {
+		   		device_type = "serial";
+		   		compatible = "ns16550";
+		   		reg = <10000200 8>;
+				virtual-reg = <a0000200>;
+		   		clock-frequency = <0>; /* Filled in by zImage */
+		   		current-speed = <1c200>;
+		   		interrupt-parent = <&UIC0>;
+		   		interrupts = <0 4>;
+	   		};
+
+			UART1: serial@10000300 {
+		   		device_type = "serial";
+		   		compatible = "ns16550";
+		   		reg = <10000300 8>;
+				virtual-reg = <a0000300>;
+		   		clock-frequency = <0>;
+		   		current-speed = <0>;
+		   		interrupt-parent = <&UIC0>;
+		   		interrupts = <1 4>;
+	   		};
+
+
+			UART2: serial@10000600 {
+		   		device_type = "serial";
+		   		compatible = "ns16550";
+		   		reg = <10000600 8>;
+				virtual-reg = <a0000600>;
+		   		clock-frequency = <0>;
+		   		current-speed = <0>;
+		   		interrupt-parent = <&UIC1>;
+		   		interrupts = <5 4>;
+	   		};
+
+			IIC0: i2c@10000400 {
+				device_type = "i2c";
+				compatible = "ibm,iic-440spe", "ibm,iic-440gp", "ibm,iic";
+				reg = <10000400 14>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <2 4>;
+			};
+
+			IIC1: i2c@10000500 {
+				device_type = "i2c";
+				compatible = "ibm,iic-440spe", "ibm,iic-440gp", "ibm,iic";
+				reg = <10000500 14>;
+				interrupt-parent = <&UIC0>;
+				interrupts = <3 4>;
+			};
+
+			EMAC0: ethernet@10000800 {
+				linux,network-index = <0>;
+				device_type = "network";
+				compatible = "ibm,emac-440spe", "ibm,emac4";
+				interrupt-parent = <&UIC1>;
+				interrupts = <1c 4 1d 4>;
+				reg = <10000800 70>;
+				local-mac-address = [000000000000];
+				mal-device = <&MAL0>;
+				mal-tx-channel = <0>;
+				mal-rx-channel = <0>;
+				cell-index = <0>;
+				max-frame-size = <5dc>;
+				rx-fifo-size = <1000>;
+				tx-fifo-size = <800>;
+				phy-mode = "gmii";
+				phy-map = <00000000>;
+				has-inverted-stacr-oc;
+				has-new-stacr-staopc;
+			};
+		};
+
+		PCIX0: pci@c0ec00000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb-pcix-440spe", "ibm,plb-pcix";
+			primary;
+			large-inbound-windows;
+			enable-msi-hole;
+			reg = <c 0ec00000   8	/* Config space access */
+			       0 0 0		/* no IACK cycles */
+			       c 0ed00000   4   /* Special cycles */
+			       c 0ec80000 100	/* Internal registers */
+			       c 0ec80100  fc>;	/* Internal messaging registers */
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed
+			 */
+			ranges = <02000000 0 80000000 0000000d 80000000 0 80000000
+				  01000000 0 00000000 0000000c 08000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 0 80000000>;
+
+			/* This drives busses 0 to 0xf */
+			bus-range = <0 f>;
+
+			/*
+			 * On Katmai, the following PCI-X interrupts signals
+			 * have to be enabled via jumpers (only INTA is
+			 * enabled per default):
+			 *
+			 * INTB: J3: 1-2
+			 * INTC: J2: 1-2
+			 * INTD: J1: 1-2
+			 */
+			interrupt-map-mask = <f800 0 0 7>;
+			interrupt-map = <
+				/* IDSEL 1 */
+				0800 0 0 1 &UIC1 14 8
+				0800 0 0 2 &UIC1 13 8
+				0800 0 0 3 &UIC1 12 8
+				0800 0 0 4 &UIC1 11 8
+			>;
+		};
+
+		PCIE0: pciex@d00000000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb-pciex-440speB", "ibm,plb-pciex";
+			primary;
+			port = <0>; /* port number */
+			reg = <d 00000000 20000000	/* Config space access */
+			       c 10000000 00001000>;	/* Registers */
+			dcr-reg = <100 020>;
+			sdr-base = <300>;
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed
+			 */
+			ranges = <02000000 0 80000000 0000000e 00000000 0 80000000
+				  01000000 0 00000000 0000000f 80000000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 0 80000000>;
+
+			/* This drives busses 10 to 0x1f */
+			bus-range = <10 1f>;
+
+			/* Legacy interrupts (note the weird polarity, the bridge seems
+			 * to invert PCIe legacy interrupts).
+			 * We are de-swizzling here because the numbers are actually for
+			 * port of the root complex virtual P2P bridge. But I want
+			 * to avoid putting a node for it in the tree, so the numbers
+			 * below are basically de-swizzled numbers.
+			 * The real slot is on idsel 0, so the swizzling is 1:1
+			 */
+			interrupt-map-mask = <0000 0 0 7>;
+			interrupt-map = <
+				0000 0 0 1 &UIC3 0 4 /* swizzled int A */
+				0000 0 0 2 &UIC3 1 4 /* swizzled int B */
+				0000 0 0 3 &UIC3 2 4 /* swizzled int C */
+				0000 0 0 4 &UIC3 3 4 /* swizzled int D */>;
+		};
+
+		PCIE1: pciex@d20000000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb-pciex-440speB", "ibm,plb-pciex";
+			primary;
+			port = <1>; /* port number */
+			reg = <d 20000000 20000000	/* Config space access */
+			       c 10001000 00001000>;	/* Registers */
+			dcr-reg = <120 020>;
+			sdr-base = <340>;
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed
+			 */
+			ranges = <02000000 0 80000000 0000000e 80000000 0 80000000
+				  01000000 0 00000000 0000000f 80010000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 0 80000000>;
+
+			/* This drives busses 10 to 0x1f */
+			bus-range = <20 2f>;
+
+			/* Legacy interrupts (note the weird polarity, the bridge seems
+			 * to invert PCIe legacy interrupts).
+			 * We are de-swizzling here because the numbers are actually for
+			 * port of the root complex virtual P2P bridge. But I want
+			 * to avoid putting a node for it in the tree, so the numbers
+			 * below are basically de-swizzled numbers.
+			 * The real slot is on idsel 0, so the swizzling is 1:1
+			 */
+			interrupt-map-mask = <0000 0 0 7>;
+			interrupt-map = <
+				0000 0 0 1 &UIC3 4 4 /* swizzled int A */
+				0000 0 0 2 &UIC3 5 4 /* swizzled int B */
+				0000 0 0 3 &UIC3 6 4 /* swizzled int C */
+				0000 0 0 4 &UIC3 7 4 /* swizzled int D */>;
+		};
+
+		PCIE2: pciex@d40000000 {
+			device_type = "pci";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			compatible = "ibm,plb-pciex-440speB", "ibm,plb-pciex";
+			primary;
+			port = <2>; /* port number */
+			reg = <d 40000000 20000000	/* Config space access */
+			       c 10002000 00001000>;	/* Registers */
+			dcr-reg = <140 020>;
+			sdr-base = <370>;
+
+			/* Outbound ranges, one memory and one IO,
+			 * later cannot be changed
+			 */
+			ranges = <02000000 0 80000000 0000000f 00000000 0 80000000
+				  01000000 0 00000000 0000000f 80020000 0 00010000>;
+
+			/* Inbound 2GB range starting at 0 */
+			dma-ranges = <42000000 0 0 0 0 0 80000000>;
+
+			/* This drives busses 10 to 0x1f */
+			bus-range = <30 3f>;
+
+			/* Legacy interrupts (note the weird polarity, the bridge seems
+			 * to invert PCIe legacy interrupts).
+			 * We are de-swizzling here because the numbers are actually for
+			 * port of the root complex virtual P2P bridge. But I want
+			 * to avoid putting a node for it in the tree, so the numbers
+			 * below are basically de-swizzled numbers.
+			 * The real slot is on idsel 0, so the swizzling is 1:1
+			 */
+			interrupt-map-mask = <0000 0 0 7>;
+			interrupt-map = <
+				0000 0 0 1 &UIC3 8 4 /* swizzled int A */
+				0000 0 0 2 &UIC3 9 4 /* swizzled int B */
+				0000 0 0 3 &UIC3 a 4 /* swizzled int C */
+				0000 0 0 4 &UIC3 b 4 /* swizzled int D */>;
+		};
+	};
+
+	chosen {
+		linux,stdout-path = "/plb/opb/serial@10000200";
+	};
+};
Index: linux-work/arch/powerpc/platforms/44x/katmai.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/platforms/44x/katmai.c	2007-12-05 11:58:32.000000000 +1100
@@ -0,0 +1,63 @@
+/*
+ * Katmai board specific routines
+ *
+ * Benjamin Herrenschmidt <benh@kernel.crashing.org>
+ * Copyright 2007 IBM Corp.
+ *
+ * Based on the Bamboo code by
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ * Copyright 2007 IBM Corporation
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+
+#include "44x.h"
+
+static struct of_device_id katmai_of_bus[] = {
+	{ .compatible = "ibm,plb4", },
+	{ .compatible = "ibm,opb", },
+	{ .compatible = "ibm,ebc", },
+	{},
+};
+
+static int __init katmai_device_probe(void)
+{
+	if (!machine_is(katmai))
+		return 0;
+
+	of_platform_bus_probe(NULL, katmai_of_bus, NULL);
+
+	return 0;
+}
+device_initcall(katmai_device_probe);
+
+static int __init katmai_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "amcc,katmai"))
+		return 0;
+
+	return 1;
+}
+
+define_machine(katmai) {
+	.name 				= "Katmai",
+	.probe 				= katmai_probe,
+	.progress 			= udbg_progress,
+	.init_IRQ 			= uic_init_tree,
+	.get_irq 			= uic_get_irq,
+	.restart			= ppc44x_reset_system,
+	.calibrate_decr			= generic_calibrate_decr,
+};
Index: linux-work/arch/powerpc/boot/cuboot-katmai.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-work/arch/powerpc/boot/cuboot-katmai.c	2007-12-05 11:58:32.000000000 +1100
@@ -0,0 +1,56 @@
+/*
+ * Old U-boot compatibility for Katmai
+ *
+ * Author: Hugh Blemings <hugh@au.ibm.com>
+ *
+ * Copyright 2007 Hugh Blemings, IBM Corporation.
+ *   Based on cuboot-ebony.c which is:
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *   Based on cuboot-83xx.c, which is:
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "stdio.h"
+#include "reg.h"
+#include "dcr.h"
+#include "4xx.h"
+#include "44x.h"
+#include "cuboot.h"
+
+#define TARGET_44x
+#include "ppcboot.h"
+
+static bd_t bd;
+
+BSS_STACK(4096);
+
+static void katmai_fixups(void)
+{
+	unsigned long sysclk = 33333000;
+
+	/* 440SP Clock logic is all but identical to 440GX
+	 * so we just use that code for now at least
+	 */
+	ibm440spe_fixup_clocks(sysclk, 6 * 1843200, 0);
+
+	ibm440spe_fixup_memsize();
+
+	dt_fixup_mac_address(0, bd.bi_enetaddr);
+
+	ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+		   unsigned long r6, unsigned long r7)
+{
+	CUBOOT_INIT();
+
+	platform_ops.fixups = katmai_fixups;
+	ft_init(_dtb_start, _dtb_end - _dtb_start, 32);
+	serial_console_init();
+}
Index: linux-work/arch/powerpc/boot/Makefile
===================================================================
--- linux-work.orig/arch/powerpc/boot/Makefile	2007-12-05 11:58:28.000000000 +1100
+++ linux-work/arch/powerpc/boot/Makefile	2007-12-05 11:58:32.000000000 +1100
@@ -38,6 +38,7 @@ BOOTCFLAGS	+= -I$(obj) -I$(srctree)/$(ob
 $(obj)/4xx.o: BOOTCFLAGS += -mcpu=440
 $(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
 $(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=440
+$(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=440
 $(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405
 
 
@@ -58,7 +59,8 @@ src-plat := of.c cuboot-52xx.c cuboot-83
 		cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
 		ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
 		cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c \
-		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c cuboot-taishan.c
+		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c cuboot-taishan.c \
+		cuboot-katmai.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -163,6 +165,7 @@ image-$(CONFIG_BAMBOO)			+= treeImage.ba
 image-$(CONFIG_SEQUOIA)			+= cuImage.sequoia
 image-$(CONFIG_WALNUT)			+= treeImage.walnut
 image-$(CONFIG_TAISHAN)			+= cuImage.taishan
+image-$(CONFIG_KATMAI)			+= cuImage.katmai
 endif
 
 # For 32-bit powermacs, build the COFF and miboot images

Re: [PATCH 24/25] powerpc: Base support for 440SPe "Katmai" eval board

[Stefan Roese]

On Thursday 06 December 2007, Benjamin Herrenschmidt wrote:
> This adds base support for the Katmai board, including PCI-X and
> PCI-Express (but no RTC, nvram, etc... yet).
>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

Acked-by: Stefan Roese <sr@denx.de>

I'll send a patch with a Katmai defconfig file in a few minutes.

Best regards,
Stefan

[PATCH 25/25] powerpc: 4xx PCI-E Link setup improvements

[Benjamin Herrenschmidt]

This improves the way the 4xx PCI-E code handles checking for a link
and adds explicit testing of CRS result codes on config space accesses.

This should make it more reliable.

Also, bridges with no link are now still created, though config space
accesses beyond the root complex are filtered. This is one step toward
eventually supporting hotplug.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

 arch/powerpc/sysdev/ppc4xx_pci.c |  222 +++++++++++++++++++++++----------------
 arch/powerpc/sysdev/ppc4xx_pci.h |    2 
 2 files changed, 134 insertions(+), 90 deletions(-)

Index: linux-work/arch/powerpc/sysdev/ppc4xx_pci.c
===================================================================
--- linux-work.orig/arch/powerpc/sysdev/ppc4xx_pci.c	2007-12-05 16:57:11.000000000 +1100
+++ linux-work/arch/powerpc/sysdev/ppc4xx_pci.c	2007-12-06 16:51:15.000000000 +1100
@@ -16,6 +16,8 @@
  *
  */
 
+#undef DEBUG
+
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/init.h>
@@ -536,10 +538,13 @@ struct ppc4xx_pciex_port
 	struct device_node	*node;
 	unsigned int		index;
 	int			endpoint;
+	int			link;
+	int			has_ibpre;
 	unsigned int		sdr_base;
 	dcr_host_t		dcrs;
 	struct resource		cfg_space;
 	struct resource		utl_regs;
+	void __iomem		*utl_base;
 };
 
 static struct ppc4xx_pciex_port *ppc4xx_pciex_ports;
@@ -711,29 +716,44 @@ static int ppc440spe_pciex_init_port_hw(
 	return 0;
 }
 
-static int ppc440speA_pciex_init_utl(struct ppc4xx_pciex_port *port)
+static int ppc440speA_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+{
+	return ppc440spe_pciex_init_port_hw(port);
+}
+
+static int ppc440speB_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 {
-	void __iomem *utl_base;
+	int rc = ppc440spe_pciex_init_port_hw(port);
+
+	port->has_ibpre = 1;
+
+	return rc;
+}
 
+static int ppc440speA_pciex_init_utl(struct ppc4xx_pciex_port *port)
+{
 	/* XXX Check what that value means... I hate magic */
 	dcr_write(port->dcrs, DCRO_PEGPL_SPECIAL, 0x68782800);
 
-	utl_base = ioremap(port->utl_regs.start, 0x100);
-	BUG_ON(utl_base == NULL);
-
 	/*
 	 * Set buffer allocations and then assert VRB and TXE.
 	 */
-	out_be32(utl_base + PEUTL_OUTTR,   0x08000000);
-	out_be32(utl_base + PEUTL_INTR,    0x02000000);
-	out_be32(utl_base + PEUTL_OPDBSZ,  0x10000000);
-	out_be32(utl_base + PEUTL_PBBSZ,   0x53000000);
-	out_be32(utl_base + PEUTL_IPHBSZ,  0x08000000);
-	out_be32(utl_base + PEUTL_IPDBSZ,  0x10000000);
-	out_be32(utl_base + PEUTL_RCIRQEN, 0x00f00000);
-	out_be32(utl_base + PEUTL_PCTL,    0x80800066);
+	out_be32(port->utl_base + PEUTL_OUTTR,   0x08000000);
+	out_be32(port->utl_base + PEUTL_INTR,    0x02000000);
+	out_be32(port->utl_base + PEUTL_OPDBSZ,  0x10000000);
+	out_be32(port->utl_base + PEUTL_PBBSZ,   0x53000000);
+	out_be32(port->utl_base + PEUTL_IPHBSZ,  0x08000000);
+	out_be32(port->utl_base + PEUTL_IPDBSZ,  0x10000000);
+	out_be32(port->utl_base + PEUTL_RCIRQEN, 0x00f00000);
+	out_be32(port->utl_base + PEUTL_PCTL,    0x80800066);
 
-	iounmap(utl_base);
+	return 0;
+}
+
+static int ppc440speB_pciex_init_utl(struct ppc4xx_pciex_port *port)
+{
+	/* Report CRS to the operating system */
+	out_be32(port->utl_base + PEUTL_PBCTL,    0x08000000);
 
 	return 0;
 }
@@ -741,14 +761,15 @@ static int ppc440speA_pciex_init_utl(str
 static struct ppc4xx_pciex_hwops ppc440speA_pcie_hwops __initdata =
 {
 	.core_init	= ppc440spe_pciex_core_init,
-	.port_init_hw	= ppc440spe_pciex_init_port_hw,
+	.port_init_hw	= ppc440speA_pciex_init_port_hw,
 	.setup_utl	= ppc440speA_pciex_init_utl,
 };
 
 static struct ppc4xx_pciex_hwops ppc440speB_pcie_hwops __initdata =
 {
 	.core_init	= ppc440spe_pciex_core_init,
-	.port_init_hw	= ppc440spe_pciex_init_port_hw,
+	.port_init_hw	= ppc440speB_pciex_init_port_hw,
+	.setup_utl	= ppc440speB_pciex_init_utl,
 };
 
 
@@ -826,30 +847,21 @@ static int ppc405ex_pciex_init_port_hw(s
 
 static int ppc405ex_pciex_init_utl(struct ppc4xx_pciex_port *port)
 {
-	void __iomem *utl_base;
-
 	dcr_write(port->dcrs, DCRO_PEGPL_SPECIAL, 0x0);
 
-	utl_base = ioremap(port->utl_regs.start, 0x100);
-	BUG_ON(utl_base == NULL);
-
 	/*
 	 * Set buffer allocations and then assert VRB and TXE.
 	 */
-	out_be32(utl_base + PEUTL_OUTTR,   0x02000000);
-	out_be32(utl_base + PEUTL_INTR,    0x02000000);
-	out_be32(utl_base + PEUTL_OPDBSZ,  0x04000000);
-	out_be32(utl_base + PEUTL_PBBSZ,   0x21000000);
-	out_be32(utl_base + PEUTL_IPHBSZ,  0x02000000);
-	out_be32(utl_base + PEUTL_IPDBSZ,  0x04000000);
-	out_be32(utl_base + PEUTL_RCIRQEN, 0x00f00000);
-	out_be32(utl_base + PEUTL_PCTL,    0x80800066);
-
-	out_be32(utl_base + PEUTL_PBCTL,   0x0800000c);
-	out_be32(utl_base + PEUTL_RCSTA,
-		 in_be32(utl_base + PEUTL_RCSTA) | 0x000040000);
+	out_be32(port->utl_base + PEUTL_OUTTR,   0x02000000);
+	out_be32(port->utl_base + PEUTL_INTR,    0x02000000);
+	out_be32(port->utl_base + PEUTL_OPDBSZ,  0x04000000);
+	out_be32(port->utl_base + PEUTL_PBBSZ,   0x21000000);
+	out_be32(port->utl_base + PEUTL_IPHBSZ,  0x02000000);
+	out_be32(port->utl_base + PEUTL_IPDBSZ,  0x04000000);
+	out_be32(port->utl_base + PEUTL_RCIRQEN, 0x00f00000);
+	out_be32(port->utl_base + PEUTL_PCTL,    0x80800066);
 
-	iounmap(utl_base);
+	out_be32(port->utl_base + PEUTL_PBCTL,   0x08000000);
 
 	return 0;
 }
@@ -931,17 +943,29 @@ static void __init ppc4xx_pciex_port_ini
 	dcr_write(port->dcrs, DCRO_PEGPL_MSGMSK, 0);
 }
 
-static int __init ppc4xx_pciex_port_init(struct ppc4xx_pciex_port *port)
+static int __init ppc4xx_pciex_wait_on_sdr(struct ppc4xx_pciex_port *port,
+					   unsigned int sdr_offset,
+					   unsigned int mask,
+					   unsigned int value,
+					   int timeout_ms)
 {
-	int attempts, rc = 0;
 	u32 val;
 
-	/* Check if it's endpoint or root complex
-	 *
-	 * XXX Do we want to use the device-tree instead ? --BenH.
-	 */
-	val = mfdcri(SDR0, port->sdr_base + PESDRn_DLPSET);
-	port->endpoint = (((val >> 20) & 0xf) != PTYPE_ROOT_PORT);
+	while(timeout_ms--) {
+		val = mfdcri(SDR0, port->sdr_base + sdr_offset);
+		if ((val & mask) == value) {
+			pr_debug("PCIE%d: Wait on SDR %x success with tm %d (%08x)\n",
+				 port->index, sdr_offset, timeout_ms, val);
+			return 0;
+		}
+		msleep(1);
+	}
+	return -1;
+}
+
+static int __init ppc4xx_pciex_port_init(struct ppc4xx_pciex_port *port)
+{
+	int rc = 0;
 
 	/* Init HW */
 	if (ppc4xx_pciex_hwops->port_init_hw)
@@ -949,44 +973,40 @@ static int __init ppc4xx_pciex_port_init
 	if (rc != 0)
 		return rc;
 
-	/*
-	 * Notice: the following delay has critical impact on device
-	 * initialization - if too short (<50ms) the link doesn't get up.
-	 *
-	 * XXX FIXME: There are various issues with that link up thingy,
-	 * we could just wait for the link with a timeout but Stefan says
-	 * some cards need more time even after the link is up. I'll
-	 * investigate. For now, we keep a fixed 1s delay.
-	 *
-	 * Ultimately, it should be made asynchronous so all ports are
-	 * brought up simultaneously though.
-	 */
-	printk(KERN_INFO "PCIE%d: Waiting for link to go up...\n",
+	printk(KERN_INFO "PCIE%d: Checking link...\n",
 	       port->index);
-	msleep(1000);
-
-	/*
-	 * Check that we exited the reset state properly
-	 */
-	val = mfdcri(SDR0, port->sdr_base + PESDRn_RCSSTS);
-	if (val & (1 << 20)) {
-		printk(KERN_WARNING "PCIE%d: PGRST failed %08x\n",
-		       port->index, val);
-		return -1;
-	}
 
-	/*
-	 * Verify link is up
-	 */
-	val = mfdcri(SDR0, port->sdr_base + PESDRn_LOOP);
-	if (!(val & 0x00001000)) {
-		printk(KERN_INFO "PCIE%d: link is not up !\n",
+	/* Wait for reset to complete */
+	if (ppc4xx_pciex_wait_on_sdr(port, PESDRn_RCSSTS, 1 << 20, 0, 10)) {
+		printk(KERN_WARNING "PCIE%d: PGRST failed\n",
 		       port->index);
 		return -1;
 	}
 
-	printk(KERN_INFO "PCIE%d: link is up !\n",
-	       port->index);
+	/* Check for card presence detect if supported, if not, just wait for
+	 * link unconditionally.
+	 *
+	 * note that we don't fail if there is no link, we just filter out
+	 * config space accesses. That way, it will be easier to implement
+	 * hotplug later on.
+	 */
+	if (!port->has_ibpre ||
+	    !ppc4xx_pciex_wait_on_sdr(port, PESDRn_LOOP,
+				      1 << 28, 1 << 28, 100)) {
+		printk(KERN_INFO
+		       "PCIE%d: Device detected, waiting for link...\n",
+		       port->index);
+		if (ppc4xx_pciex_wait_on_sdr(port, PESDRn_LOOP,
+					     0x1000, 0x1000, 2000))
+			printk(KERN_WARNING
+			       "PCIE%d: Link up failed\n", port->index);
+		else {
+			printk(KERN_INFO
+			       "PCIE%d: link is up !\n", port->index);
+			port->link = 1;
+		}
+	} else
+		printk(KERN_INFO "PCIE%d: No device detected.\n", port->index);
 
 	/*
 	 * Initialize mapping: disable all regions and configure
@@ -995,12 +1015,13 @@ static int __init ppc4xx_pciex_port_init
 	ppc4xx_pciex_port_init_mapping(port);
 
 	/*
-	 * Setup UTL registers - but only on revA!
-	 * We use default settings for revB chip.
-	 *
-	 * To be reworked. We may also be able to move that to
-	 * before the link wait
-	 * --BenH.
+	 * Map UTL
+	 */
+	port->utl_base = ioremap(port->utl_regs.start, 0x100);
+	BUG_ON(port->utl_base == NULL);
+
+	/*
+	 * Setup UTL registers --BenH.
 	 */
 	if (ppc4xx_pciex_hwops->setup_utl)
 		ppc4xx_pciex_hwops->setup_utl(port);
@@ -1008,15 +1029,13 @@ static int __init ppc4xx_pciex_port_init
 	/*
 	 * Check for VC0 active and assert RDY.
 	 */
-	attempts = 10;
-	while (!(mfdcri(SDR0, port->sdr_base + PESDRn_RCSSTS) & (1 << 16))) {
-		if (!(attempts--)) {
-			printk(KERN_INFO "PCIE%d: VC0 not active\n",
-			       port->index);
-			return -1;
-		}
-		msleep(1000);
+	if (port->link &&
+	    ppc4xx_pciex_wait_on_sdr(port, PESDRn_RCSSTS,
+				     1 << 16, 1 << 16, 5000)) {
+		printk(KERN_INFO "PCIE%d: VC0 not active\n", port->index);
+		port->link = 0;
 	}
+
 	mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET,
 	       mfdcri(SDR0, port->sdr_base + PESDRn_RCSSET) | 1 << 20);
 	msleep(100);
@@ -1053,6 +1072,10 @@ static int ppc4xx_pciex_validate_bdf(str
 	    PCI_SLOT(devfn) != 0)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
+	/* Check if we have a link */
+	if ((bus->number != port->hose->first_busno) && !port->link)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
 	return 0;
 }
 
@@ -1097,6 +1120,9 @@ static int ppc4xx_pciex_read_config(stru
 	gpl_cfg = dcr_read(port->dcrs, DCRO_PEGPL_CFG);
 	dcr_write(port->dcrs, DCRO_PEGPL_CFG, gpl_cfg | GPL_DMER_MASK_DISA);
 
+	/* Make sure no CRS is recorded */
+	out_be32(port->utl_base + PEUTL_RCSTA, 0x00040000);
+
 	switch (len) {
 	case 1:
 		*val = in_8((u8 *)(addr + offset));
@@ -1114,6 +1140,14 @@ static int ppc4xx_pciex_read_config(stru
 		 bus->number, hose->first_busno, hose->last_busno,
 		 devfn, offset, len, addr + offset, *val);
 
+	/* Check for CRS (440SPe rev B does that for us but heh ..) */
+	if (in_be32(port->utl_base + PEUTL_RCSTA) & 0x00040000) {
+		pr_debug("Got CRS !\n");
+		if (len != 0 && offset != 0)
+			return PCIBIOS_DEVICE_NOT_FOUND;
+		*val = 0xffff0001;
+	}
+
 	dcr_write(port->dcrs, DCRO_PEGPL_CFG, gpl_cfg);
 
 	return PCIBIOS_SUCCESSFUL;
@@ -1283,8 +1317,11 @@ static void __init ppc4xx_pciex_port_set
 	void __iomem *mbase = NULL, *cfg_data = NULL;
 
 	/* XXX FIXME: Handle endpoint mode properly */
-	if (port->endpoint)
+	if (port->endpoint) {
+		printk(KERN_WARNING "PCIE%d: Port in endpoint mode !\n",
+		       port->index);
 		return;
+	}
 
 	/* Check if primary bridge */
 	if (of_get_property(port->node, "primary", NULL))
@@ -1429,6 +1466,9 @@ static void __init ppc4xx_probe_pciex_br
 	}
 	port->sdr_base = *pval;
 
+	/* XXX Currently, we only support root complex mode */
+	port->endpoint = 0;
+
 	/* Fetch config space registers address */
 	if (of_address_to_resource(np, 0, &port->cfg_space)) {
 		printk(KERN_ERR "%s: Can't get PCI-E config space !",
@@ -1452,8 +1492,10 @@ static void __init ppc4xx_probe_pciex_br
 	port->dcrs = dcr_map(np, dcrs, dcr_resource_len(np, 0));
 
 	/* Initialize the port specific registers */
-	if (ppc4xx_pciex_port_init(port))
+	if (ppc4xx_pciex_port_init(port)) {
+		printk(KERN_WARNING "PCIE%d: Port init failed\n", port->index);
 		return;
+	}
 
 	/* Setup the linux hose data structure */
 	ppc4xx_pciex_port_setup_hose(port);
Index: linux-work/arch/powerpc/sysdev/ppc4xx_pci.h
===================================================================
--- linux-work.orig/arch/powerpc/sysdev/ppc4xx_pci.h	2007-12-05 16:57:11.000000000 +1100
+++ linux-work/arch/powerpc/sysdev/ppc4xx_pci.h	2007-12-05 16:57:26.000000000 +1100
@@ -330,6 +330,8 @@
 /*
  * Config space register offsets
  */
+#define PECFG_ECRTCTL		0x074
+
 #define PECFG_BAR0LMPA		0x210
 #define PECFG_BAR0HMPA		0x214
 #define PECFG_BAR1MPA		0x218

Re: [PATCH 0/25] powerpc: 4xx PCI, PCI-X and PCI-Express support among others

[Josh Boyer]

On Thu, 06 Dec 2007 18:59:59 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> Here's a set of patches that bring PCI, PCI-X and PCI-Express
> support to 4xx on arch/powerpc. It also changes/fixed various
> bits and pieces, such as a bit of rework of arch/powerpc/boot
> 4xx code, adding a couple of new platforms along the way. 
> 
> There are some issues with the SCSI stack vs. non-coherent
> DMA that I'm working on fixing separately, and there's a
> problem I noticed with the e1000 driver vs. 64 bits resources
> on 32 bits architectures for which I also have a patch that
> I posted separately. Appart from that, I got it working fine
> with a USB2 card in an ebony and 2 USB storage devices.

You should update your tree at some point.  Your patches apply with
fuzz because Paul's tree has changes apparently yours doesn't.

josh

Re: [PATCH 0/25] powerpc: 4xx PCI, PCI-X and PCI-Express support among others

[Josh Boyer]

On Thu, 06 Dec 2007 18:59:59 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> Here's a set of patches that bring PCI, PCI-X and PCI-Express
> support to 4xx on arch/powerpc. It also changes/fixed various
> bits and pieces, such as a bit of rework of arch/powerpc/boot
> 4xx code, adding a couple of new platforms along the way. 
> 
> There are some issues with the SCSI stack vs. non-coherent
> DMA that I'm working on fixing separately, and there's a
> problem I noticed with the e1000 driver vs. 64 bits resources
> on 32 bits architectures for which I also have a patch that
> I posted separately. Appart from that, I got it working fine
> with a USB2 card in an ebony and 2 USB storage devices.
> 

These are now in my 2.6.25-candidates tree.

josh