[PATCH 1/3] Add support for the Freescale MPC8349E-mITX eval board

[Kim Phillips <kim.phillips@freescale.com>]

Add support for the Freescale MPC8349E-mITX eval board

This is largely based on 8349 SYS code except that it uses the new rtc_class code in drivers/rtc instead of explicitly specifying the rtc chip.  SATA is untested, as this is work in progress.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Timur Tabi <timur@freescale.com>
---

 arch/powerpc/platforms/83xx/Kconfig       |   11 ++
 arch/powerpc/platforms/83xx/Makefile      |    1 
 arch/powerpc/platforms/83xx/misc.c        |   52 +++++++++
 arch/powerpc/platforms/83xx/mpc834x_itx.c |  166 +++++++++++++++++++++++++++++
 arch/powerpc/platforms/83xx/mpc834x_itx.h |   23 ++++
 arch/powerpc/platforms/83xx/mpc83xx.h     |    5 +
 include/asm-ppc/mpc83xx.h                 |    4 +
 7 files changed, 261 insertions(+), 1 deletions(-)
 create mode 100644 arch/powerpc/platforms/83xx/mpc834x_itx.c
 create mode 100644 arch/powerpc/platforms/83xx/mpc834x_itx.h

3182b4a50027d17badab0c7b8dc2fd4d8fc307b0
diff --git a/arch/powerpc/platforms/83xx/Kconfig b/arch/powerpc/platforms/83xx/Kconfig
index 7675e67..5fe7b7f 100644
--- a/arch/powerpc/platforms/83xx/Kconfig
+++ b/arch/powerpc/platforms/83xx/Kconfig
@@ -16,12 +16,21 @@ config MPC834x_SYS
 	  3 PCI slots.  The PIBs PCI initialization is the bootloader's
 	  responsiblilty.
 
+config MPC834x_ITX
+	bool "Freescale MPC834x ITX"
+	select DEFAULT_UIMAGE
+	help
+	  This option enables support for the MPC 834x ITX evaluation board.
+
+	  Be aware that PCI initialization is the bootloader's
+	  responsiblilty.
+
 endchoice
 
 config MPC834x
 	bool
 	select PPC_UDBG_16550
 	select PPC_INDIRECT_PCI
-	default y if MPC834x_SYS
+	default y if MPC834x_SYS || MPC834x_ITX
 
 endmenu
diff --git a/arch/powerpc/platforms/83xx/Makefile b/arch/powerpc/platforms/83xx/Makefile
index 5c72367..9387a11 100644
--- a/arch/powerpc/platforms/83xx/Makefile
+++ b/arch/powerpc/platforms/83xx/Makefile
@@ -4,3 +4,4 @@
 obj-y				:= misc.o
 obj-$(CONFIG_PCI)		+= pci.o
 obj-$(CONFIG_MPC834x_SYS)	+= mpc834x_sys.o
+obj-$(CONFIG_MPC834x_ITX)	+= mpc834x_itx.o
diff --git a/arch/powerpc/platforms/83xx/misc.c b/arch/powerpc/platforms/83xx/misc.c
index 1455bce..568a8f7 100644
--- a/arch/powerpc/platforms/83xx/misc.c
+++ b/arch/powerpc/platforms/83xx/misc.c
@@ -53,3 +53,55 @@ long __init mpc83xx_time_init(void)
 
 	return 0;
 }
+
+#ifdef CONFIG_RTC_CLASS
+int mpc83xx_set_rtc_time(struct rtc_time *tm)
+{
+	int err;
+	struct class_device *class_dev =
+		rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
+
+	if (class_dev == NULL) {
+		printk("%s: unable to open rtc device (%s)\n",
+			__FUNCTION__, CONFIG_RTC_HCTOSYS_DEVICE);
+		return -ENODEV;
+	}
+
+	err = rtc_set_time(class_dev, tm);
+	if (err != 0)
+		dev_err(class_dev->dev,
+			"%s: unable to set the hardware clock\n",__FUNCTION__);
+
+	rtc_class_close(class_dev);
+
+	return 0;
+}
+
+void mpc83xx_get_rtc_time(struct rtc_time *tm)
+{
+	int err;
+	struct class_device *class_dev =
+		rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
+
+	if (class_dev == NULL) {
+		printk("%s: unable to open rtc device (%s)\n",
+			__FUNCTION__, CONFIG_RTC_HCTOSYS_DEVICE);
+		return;
+	}
+
+	err = rtc_read_time(class_dev, tm);
+	if (err == 0) {
+		err = rtc_valid_tm(tm);
+		if (err != 0)
+			dev_err(class_dev->dev,
+				"%s: invalid date/time\n",__FUNCTION__);
+	}
+	else
+		dev_err(class_dev->dev,
+			"%s: unable to read the hardware clock\n",__FUNCTION__);
+
+	rtc_class_close(class_dev);
+
+	return;
+}
+#endif /* CONFIG_RTC_CLASS */
diff --git a/arch/powerpc/platforms/83xx/mpc834x_itx.c b/arch/powerpc/platforms/83xx/mpc834x_itx.c
new file mode 100644
index 0000000..0a3f58a
--- /dev/null
+++ b/arch/powerpc/platforms/83xx/mpc834x_itx.c
@@ -0,0 +1,166 @@
+/*
+ * arch/powerpc/platforms/83xx/mpc834x_itx.c
+ *
+ * MPC834x ITX board specific routines
+ *
+ * Maintainer: Kumar Gala <galak@kernel.crashing.org>
+ *
+ * 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/config.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/major.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+
+#include <asm/system.h>
+#include <asm/atomic.h>
+#include <asm/time.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/ipic.h>
+#include <asm/bootinfo.h>
+#include <asm/irq.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <sysdev/fsl_soc.h>
+
+#include "mpc83xx.h"
+
+#ifndef CONFIG_PCI
+unsigned long isa_io_base = 0;
+unsigned long isa_mem_base = 0;
+#endif
+
+#ifdef CONFIG_PCI
+static int
+mpc83xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+	static char pci_irq_table[][4] =
+	    /*
+	     *      PCI IDSEL/INTPIN->INTLINE
+	     *       A      B      C      D
+	     */
+	{
+		{PIRQB, PIRQC, PIRQD, PIRQA},	/* idsel 0x0e */
+		{PIRQA, PIRQB, PIRQC, PIRQD},	/* idsel 0x0f */
+		{PIRQC, PIRQD, PIRQA, PIRQB},	/* idsel 0x10 */
+	};
+
+	const long min_idsel = 0x0e, max_idsel = 0x10, irqs_per_slot = 4;
+	return PCI_IRQ_TABLE_LOOKUP;
+}
+#endif				/* CONFIG_PCI */
+
+/* ************************************************************************
+ *
+ * Setup the architecture
+ *
+ */
+static void __init mpc834x_itx_setup_arch(void)
+{
+	struct device_node *np;
+
+	if (ppc_md.progress)
+		ppc_md.progress("mpc834x_itx_setup_arch()", 0);
+
+	np = of_find_node_by_type(NULL, "cpu");
+	if (np != 0) {
+		unsigned int *fp =
+		    (int *)get_property(np, "clock-frequency", NULL);
+		if (fp != 0)
+			loops_per_jiffy = *fp / HZ;
+		else
+			loops_per_jiffy = 50000000 / HZ;
+		of_node_put(np);
+	}
+#ifdef CONFIG_PCI
+	for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
+		add_bridge(np);
+
+	ppc_md.pci_swizzle = common_swizzle;
+	ppc_md.pci_map_irq = mpc83xx_map_irq;
+	ppc_md.pci_exclude_device = mpc83xx_exclude_device;
+#endif
+
+#ifdef  CONFIG_ROOT_NFS
+	ROOT_DEV = Root_NFS;
+#else
+	ROOT_DEV = Root_HDA1;
+#endif
+}
+
+void __init mpc834x_itx_init_IRQ(void)
+{
+	u8 senses[8] = {
+		0,			/* EXT 0 */
+		IRQ_SENSE_LEVEL,	/* EXT 1 */
+		IRQ_SENSE_LEVEL,	/* EXT 2 */
+		0,			/* EXT 3 */
+#ifdef CONFIG_PCI
+		IRQ_SENSE_LEVEL,	/* EXT 4 */
+		IRQ_SENSE_LEVEL,	/* EXT 5 */
+		IRQ_SENSE_LEVEL,	/* EXT 6 */
+		IRQ_SENSE_LEVEL,	/* EXT 7 */
+#else
+		0,			/* EXT 4 */
+		0,			/* EXT 5 */
+		0,			/* EXT 6 */
+		0,			/* EXT 7 */
+#endif
+	};
+
+	ipic_init(get_immrbase() + 0x00700, 0, 0, senses, 8);
+
+	/* Initialize the default interrupt mapping priorities,
+	 * in case the boot rom changed something on us.
+	 */
+	ipic_set_default_priority();
+}
+
+#ifdef CONFIG_RTC_CLASS
+static int __init mpc834x_rtc_hookup(void)
+{
+	ppc_md.get_rtc_time = mpc83xx_get_rtc_time;
+	ppc_md.set_rtc_time = mpc83xx_set_rtc_time;
+
+	return 0;
+}
+
+late_initcall(mpc834x_rtc_hookup);
+#endif
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init mpc834x_itx_probe(void)
+{
+	/* We always match for now, eventually we should look at the flat
+	   dev tree to ensure this is the board we are suppose to run on
+	*/
+	return 1;
+}
+
+define_machine(mpc834x_itx) {
+	.name			= "MPC834x ITX",
+	.probe			= mpc834x_itx_probe,
+	.setup_arch		= mpc834x_itx_setup_arch,
+	.init_IRQ		= mpc834x_itx_init_IRQ,
+	.get_irq		= ipic_get_irq,
+	.restart		= mpc83xx_restart,
+	.time_init		= mpc83xx_time_init,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+};
diff --git a/arch/powerpc/platforms/83xx/mpc834x_itx.h b/arch/powerpc/platforms/83xx/mpc834x_itx.h
new file mode 100644
index 0000000..174ca4e
--- /dev/null
+++ b/arch/powerpc/platforms/83xx/mpc834x_itx.h
@@ -0,0 +1,23 @@
+/*
+ * arch/powerpc/platforms/83xx/mpc834x_itx.h
+ *
+ * MPC834X ITX common board definitions
+ *
+ * Maintainer: Kumar Gala <galak@kernel.crashing.org>
+ *
+ * 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.
+ *
+ */
+
+#ifndef __MACH_MPC83XX_ITX_H__
+#define __MACH_MPC83XX_ITX_H__
+
+#define PIRQA	MPC83xx_IRQ_EXT4
+#define PIRQB	MPC83xx_IRQ_EXT5
+#define PIRQC	MPC83xx_IRQ_EXT6
+#define PIRQD	MPC83xx_IRQ_EXT7
+
+#endif				/* __MACH_MPC83XX_ITX_H__ */
diff --git a/arch/powerpc/platforms/83xx/mpc83xx.h b/arch/powerpc/platforms/83xx/mpc83xx.h
index 01cae10..532a084 100644
--- a/arch/powerpc/platforms/83xx/mpc83xx.h
+++ b/arch/powerpc/platforms/83xx/mpc83xx.h
@@ -3,6 +3,7 @@
 
 #include <linux/init.h>
 #include <linux/device.h>
+#include <linux/rtc.h>
 
 /*
  * Declaration for the various functions exported by the
@@ -13,5 +14,9 @@ extern int add_bridge(struct device_node
 extern int mpc83xx_exclude_device(u_char bus, u_char devfn);
 extern void mpc83xx_restart(char *cmd);
 extern long mpc83xx_time_init(void);
+#ifdef CONFIG_RTC_CLASS
+extern int mpc83xx_set_rtc_time(struct rtc_time *tm);
+extern void mpc83xx_get_rtc_time(struct rtc_time *tm);
+#endif
 
 #endif				/* __MPC83XX_H__ */
diff --git a/include/asm-ppc/mpc83xx.h b/include/asm-ppc/mpc83xx.h
index 02ed2c3..80076be 100644
--- a/include/asm-ppc/mpc83xx.h
+++ b/include/asm-ppc/mpc83xx.h
@@ -25,6 +25,10 @@
 #include <platforms/83xx/mpc834x_sys.h>
 #endif
 
+#ifdef CONFIG_MPC834x_ITX
+#include <platforms/83xx/mpc834x_itx.h>
+#endif
+
 #define _IO_BASE        isa_io_base
 #define _ISA_MEM_BASE   isa_mem_base
 #ifdef CONFIG_PCI
-- 
1.2.4