[RFC PATCH v2 00/11] powerpc: nintendo gamecube support

[RFC PATCH v2 00/11] powerpc: nintendo gamecube support

[Albert Herranz]

The following patches add the base support for the Nintendo GameCube
video game console on the powerpc arch.

The following is included:
- a device tree source
- bootwrapper support
- udbg console option
- early udbg console option
- interrupt controller support
- platform support

With these patches the video game console can fully boot up to the
root filesystem mount phase.

These patches are a pre-requisite for the patchset supporting the
Nintendo Wii video game console, which will be posted separately
to simplify the review and possible merging.

Albert Herranz (11):
  powerpc: gamecube/wii: usbgecko bootwrapper console support
  powerpc: gamecube: device tree
  powerpc: gamecube: bootwrapper bits
  powerpc: gamecube/wii: introduce GAMECUBE_COMMON
  powerpc: gamecube/wii: declare as non-coherent platforms
  powerpc: gamecube/wii: do not include PCI support
  powerpc: gamecube/wii: udbg support for usbgecko
  powerpc: gamecube/wii: early debugging using usbgecko
  powerpc: gamecube/wii: flipper interrupt controller support
  powerpc: gamecube: platform support
  powerpc: gamecube: default config

 .../powerpc/dts-bindings/nintendo/gamecube.txt     |  109 ++
 arch/powerpc/Kconfig                               |    2 +-
 arch/powerpc/Kconfig.debug                         |    8 +
 arch/powerpc/boot/Makefile                         |    6 +-
 arch/powerpc/boot/dts/gamecube.dts                 |  114 +++
 arch/powerpc/boot/gamecube-head.S                  |  111 ++
 arch/powerpc/boot/gamecube.c                       |   35 +
 arch/powerpc/boot/ugecon.c                         |  147 +++
 arch/powerpc/boot/ugecon.h                         |   24 +
 arch/powerpc/boot/wrapper                          |    4 +
 arch/powerpc/configs/gamecube_defconfig            | 1061 ++++++++++++++++++++
 arch/powerpc/include/asm/udbg.h                    |    1 +
 arch/powerpc/kernel/head_32.S                      |   21 +
 arch/powerpc/kernel/udbg.c                         |    2 +
 arch/powerpc/platforms/Kconfig.cputype             |    2 +-
 arch/powerpc/platforms/embedded6xx/Kconfig         |   25 +
 arch/powerpc/platforms/embedded6xx/Makefile        |    3 +
 arch/powerpc/platforms/embedded6xx/flipper-pic.c   |  263 +++++
 arch/powerpc/platforms/embedded6xx/flipper-pic.h   |   25 +
 arch/powerpc/platforms/embedded6xx/gamecube.c      |  118 +++
 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c |  325 ++++++
 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h |   32 +
 22 files changed, 2434 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/powerpc/dts-bindings/nintendo/gamecube.txt
 create mode 100644 arch/powerpc/boot/dts/gamecube.dts
 create mode 100644 arch/powerpc/boot/gamecube-head.S
 create mode 100644 arch/powerpc/boot/gamecube.c
 create mode 100644 arch/powerpc/boot/ugecon.c
 create mode 100644 arch/powerpc/boot/ugecon.h
 create mode 100644 arch/powerpc/configs/gamecube_defconfig
 create mode 100644 arch/powerpc/platforms/embedded6xx/flipper-pic.c
 create mode 100644 arch/powerpc/platforms/embedded6xx/flipper-pic.h
 create mode 100644 arch/powerpc/platforms/embedded6xx/gamecube.c
 create mode 100644 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
 create mode 100644 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h

[RFC PATCH v2 01/11] powerpc: gamecube/wii: usbgecko bootwrapper console support

[Albert Herranz]

Add support for using the USB Gecko adapter as a bootwrapper console on
the Nintendo GameCube and Wii video game consoles.
The USB Gecko is a 3rd party memory card interface adapter that provides
a EXI (External Interface) to USB serial converter.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
v1 -> v2
- Probe dinamically for usbgecko. Suggestion by Segher Boessenkool.
- Adapt to updated device tree.

 arch/powerpc/boot/Makefile |    2 +-
 arch/powerpc/boot/ugecon.c |  147 ++++++++++++++++++++++++++++++++++++++++++++
 arch/powerpc/boot/ugecon.h |   24 +++++++
 3 files changed, 172 insertions(+), 1 deletions(-)
 create mode 100644 arch/powerpc/boot/ugecon.c
 create mode 100644 arch/powerpc/boot/ugecon.h

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 7bfc8ad..44bce21 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -66,7 +66,7 @@ src-wlib := string.S crt0.S crtsavres.S stdio.c main.c \
 		gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \
 		4xx.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c \
 		cpm-serial.c stdlib.c mpc52xx-psc.c planetcore.c uartlite.c \
-		fsl-soc.c mpc8xx.c pq2.c
+		fsl-soc.c mpc8xx.c pq2.c ugecon.c
 src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c \
 		cuboot-ebony.c cuboot-hotfoot.c treeboot-ebony.c prpmc2800.c \
 		ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
diff --git a/arch/powerpc/boot/ugecon.c b/arch/powerpc/boot/ugecon.c
new file mode 100644
index 0000000..50609ea
--- /dev/null
+++ b/arch/powerpc/boot/ugecon.c
@@ -0,0 +1,147 @@
+/*
+ * arch/powerpc/boot/ugecon.c
+ *
+ * USB Gecko bootwrapper console.
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * 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 <stddef.h>
+#include "stdio.h"
+#include "types.h"
+#include "io.h"
+#include "ops.h"
+
+
+#define EXI_CLK_32MHZ           5
+
+#define EXI_CSR                 0x00
+#define   EXI_CSR_CLKMASK       (0x7<<4)
+#define     EXI_CSR_CLK_32MHZ   (EXI_CLK_32MHZ<<4)
+#define   EXI_CSR_CSMASK        (0x7<<7)
+#define     EXI_CSR_CS_0        (0x1<<7)  /* Chip Select 001 */
+
+#define EXI_CR                  0x0c
+#define   EXI_CR_TSTART         (1<<0)
+#define   EXI_CR_WRITE		(1<<2)
+#define   EXI_CR_READ_WRITE     (2<<2)
+#define   EXI_CR_TLEN(len)      (((len)-1)<<4)
+
+#define EXI_DATA                0x10
+
+
+/* virtual address base for input/output, retrieved from device tree */
+static void *ug_io_base;
+
+
+static u32 ug_io_transaction(u32 in)
+{
+	u32 *csr_reg = ug_io_base + EXI_CSR;
+	u32 *data_reg = ug_io_base + EXI_DATA;
+	u32 *cr_reg = ug_io_base + EXI_CR;
+	u32 csr, data, cr;
+
+	/* select */
+	csr = EXI_CSR_CLK_32MHZ | EXI_CSR_CS_0;
+	out_be32(csr_reg, csr);
+
+	/* read/write */
+	data = in;
+	out_be32(data_reg, data);
+	cr = EXI_CR_TLEN(2) | EXI_CR_READ_WRITE | EXI_CR_TSTART;
+	out_be32(cr_reg, cr);
+
+	while (in_be32(cr_reg) & EXI_CR_TSTART)
+		barrier();
+
+	/* deselect */
+	out_be32(csr_reg, 0);
+
+	data = in_be32(data_reg);
+	return data;
+}
+
+static int ug_is_txfifo_ready(void)
+{
+	return ug_io_transaction(0xc0000000) & 0x04000000;
+}
+
+static void ug_raw_putc(char ch)
+{
+	ug_io_transaction(0xb0000000 | (ch << 20));
+}
+
+static void ug_putc(char ch)
+{
+	int count = 16;
+
+	if (!ug_io_base)
+		return;
+
+	while (!ug_is_txfifo_ready() && count--)
+		barrier();
+	if (count)
+		ug_raw_putc(ch);
+}
+
+void ug_console_write(const char *buf, int len)
+{
+	char *b = (char *)buf;
+
+	while (len--) {
+		if (*b == '\n')
+			ug_putc('\r');
+		ug_putc(*b++);
+	}
+}
+
+static int ug_is_adapter_present(void)
+{
+	if (!ug_io_base)
+		return 0;
+	return ug_io_transaction(0x90000000) == 0x04700000;
+}
+
+static void *ug_grab_exi_io_base(void)
+{
+	u32 v;
+	void *devp;
+
+	devp = find_node_by_compatible(NULL, "nintendo,flipper-exi");
+	if (devp == NULL)
+		goto err_out;
+	if (getprop(devp, "virtual-reg", &v, sizeof(v)) != sizeof(v))
+		goto err_out;
+
+	return (void *)v;
+
+err_out:
+	return NULL;
+}
+
+void *ug_probe(void)
+{
+	void *exi_io_base;
+	int i;
+
+	exi_io_base = ug_grab_exi_io_base();
+	if (!exi_io_base)
+		return NULL;
+
+	/* look for a usbgecko on memcard slots A and B */
+	for (i = 0; i < 2; i++) {
+		ug_io_base = exi_io_base + 0x14 * i;
+		if (ug_is_adapter_present())
+			break;
+	}
+	if (i == 2)
+		ug_io_base = NULL;
+	return ug_io_base;
+}
+
diff --git a/arch/powerpc/boot/ugecon.h b/arch/powerpc/boot/ugecon.h
new file mode 100644
index 0000000..4373753
--- /dev/null
+++ b/arch/powerpc/boot/ugecon.h
@@ -0,0 +1,24 @@
+/*
+ * arch/powerpc/boot/ugecon.h
+ *
+ * USB Gecko early bootwrapper console.
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * 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 __UGECON_H
+#define __UGECON_H
+
+extern void *ug_probe(void);
+
+extern void ug_putc(char ch);
+extern void ug_console_write(const char *buf, int len);
+
+#endif /* __UGECON_H */
+
-- 
1.6.3.3

Re: [RFC PATCH v2 01/11] powerpc: gamecube/wii: usbgecko bootwrapper console support

[Segher Boessenkool]

> Add support for using the USB Gecko adapter as a bootwrapper  
> console on
> the Nintendo GameCube and Wii video game consoles.
> The USB Gecko is a 3rd party memory card interface adapter that  
> provides
> a EXI (External Interface) to USB serial converter.
>
> Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>

> ---
> v1 -> v2
> - Probe dinamically for usbgecko. Suggestion by Segher Boessenkool.
> - Adapt to updated device tree.
>
>  arch/powerpc/boot/Makefile |    2 +-
>  arch/powerpc/boot/ugecon.c |  147 +++++++++++++++++++++++++++++++++ 
> +++++++++++
>  arch/powerpc/boot/ugecon.h |   24 +++++++
>  3 files changed, 172 insertions(+), 1 deletions(-)
>  create mode 100644 arch/powerpc/boot/ugecon.c
>  create mode 100644 arch/powerpc/boot/ugecon.h
>
> diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
> index 7bfc8ad..44bce21 100644
> --- a/arch/powerpc/boot/Makefile
> +++ b/arch/powerpc/boot/Makefile
> @@ -66,7 +66,7 @@ src-wlib := string.S crt0.S crtsavres.S stdio.c  
> main.c \
>  		gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \
>  		4xx.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c \
>  		cpm-serial.c stdlib.c mpc52xx-psc.c planetcore.c uartlite.c \
> -		fsl-soc.c mpc8xx.c pq2.c
> +		fsl-soc.c mpc8xx.c pq2.c ugecon.c
>  src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c  
> cuboot-85xx.c holly.c \
>  		cuboot-ebony.c cuboot-hotfoot.c treeboot-ebony.c prpmc2800.c \
>  		ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
> diff --git a/arch/powerpc/boot/ugecon.c b/arch/powerpc/boot/ugecon.c
> new file mode 100644
> index 0000000..50609ea
> --- /dev/null
> +++ b/arch/powerpc/boot/ugecon.c
> @@ -0,0 +1,147 @@
> +/*
> + * arch/powerpc/boot/ugecon.c
> + *
> + * USB Gecko bootwrapper console.
> + * Copyright (C) 2008-2009 The GameCube Linux Team
> + * Copyright (C) 2008,2009 Albert Herranz
> + *
> + * 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 <stddef.h>
> +#include "stdio.h"
> +#include "types.h"
> +#include "io.h"
> +#include "ops.h"
> +
> +
> +#define EXI_CLK_32MHZ           5
> +
> +#define EXI_CSR                 0x00
> +#define   EXI_CSR_CLKMASK       (0x7<<4)
> +#define     EXI_CSR_CLK_32MHZ   (EXI_CLK_32MHZ<<4)
> +#define   EXI_CSR_CSMASK        (0x7<<7)
> +#define     EXI_CSR_CS_0        (0x1<<7)  /* Chip Select 001 */
> +
> +#define EXI_CR                  0x0c
> +#define   EXI_CR_TSTART         (1<<0)
> +#define   EXI_CR_WRITE		(1<<2)
> +#define   EXI_CR_READ_WRITE     (2<<2)
> +#define   EXI_CR_TLEN(len)      (((len)-1)<<4)
> +
> +#define EXI_DATA                0x10
> +
> +
> +/* virtual address base for input/output, retrieved from device  
> tree */
> +static void *ug_io_base;
> +
> +
> +static u32 ug_io_transaction(u32 in)
> +{
> +	u32 *csr_reg = ug_io_base + EXI_CSR;
> +	u32 *data_reg = ug_io_base + EXI_DATA;
> +	u32 *cr_reg = ug_io_base + EXI_CR;
> +	u32 csr, data, cr;
> +
> +	/* select */
> +	csr = EXI_CSR_CLK_32MHZ | EXI_CSR_CS_0;
> +	out_be32(csr_reg, csr);
> +
> +	/* read/write */
> +	data = in;
> +	out_be32(data_reg, data);
> +	cr = EXI_CR_TLEN(2) | EXI_CR_READ_WRITE | EXI_CR_TSTART;
> +	out_be32(cr_reg, cr);
> +
> +	while (in_be32(cr_reg) & EXI_CR_TSTART)
> +		barrier();
> +
> +	/* deselect */
> +	out_be32(csr_reg, 0);
> +
> +	data = in_be32(data_reg);
> +	return data;
> +}
> +
> +static int ug_is_txfifo_ready(void)
> +{
> +	return ug_io_transaction(0xc0000000) & 0x04000000;
> +}
> +
> +static void ug_raw_putc(char ch)
> +{
> +	ug_io_transaction(0xb0000000 | (ch << 20));
> +}
> +
> +static void ug_putc(char ch)
> +{
> +	int count = 16;
> +
> +	if (!ug_io_base)
> +		return;
> +
> +	while (!ug_is_txfifo_ready() && count--)
> +		barrier();
> +	if (count)
> +		ug_raw_putc(ch);
> +}
> +
> +void ug_console_write(const char *buf, int len)
> +{
> +	char *b = (char *)buf;
> +
> +	while (len--) {
> +		if (*b == '\n')
> +			ug_putc('\r');
> +		ug_putc(*b++);
> +	}
> +}
> +
> +static int ug_is_adapter_present(void)
> +{
> +	if (!ug_io_base)
> +		return 0;
> +	return ug_io_transaction(0x90000000) == 0x04700000;
> +}
> +
> +static void *ug_grab_exi_io_base(void)
> +{
> +	u32 v;
> +	void *devp;
> +
> +	devp = find_node_by_compatible(NULL, "nintendo,flipper-exi");
> +	if (devp == NULL)
> +		goto err_out;
> +	if (getprop(devp, "virtual-reg", &v, sizeof(v)) != sizeof(v))
> +		goto err_out;
> +
> +	return (void *)v;
> +
> +err_out:
> +	return NULL;
> +}
> +
> +void *ug_probe(void)
> +{
> +	void *exi_io_base;
> +	int i;
> +
> +	exi_io_base = ug_grab_exi_io_base();
> +	if (!exi_io_base)
> +		return NULL;
> +
> +	/* look for a usbgecko on memcard slots A and B */
> +	for (i = 0; i < 2; i++) {
> +		ug_io_base = exi_io_base + 0x14 * i;
> +		if (ug_is_adapter_present())
> +			break;
> +	}
> +	if (i == 2)
> +		ug_io_base = NULL;
> +	return ug_io_base;
> +}
> +
> diff --git a/arch/powerpc/boot/ugecon.h b/arch/powerpc/boot/ugecon.h
> new file mode 100644
> index 0000000..4373753
> --- /dev/null
> +++ b/arch/powerpc/boot/ugecon.h
> @@ -0,0 +1,24 @@
> +/*
> + * arch/powerpc/boot/ugecon.h
> + *
> + * USB Gecko early bootwrapper console.
> + * Copyright (C) 2008-2009 The GameCube Linux Team
> + * Copyright (C) 2008,2009 Albert Herranz
> + *
> + * 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 __UGECON_H
> +#define __UGECON_H
> +
> +extern void *ug_probe(void);
> +
> +extern void ug_putc(char ch);
> +extern void ug_console_write(const char *buf, int len);
> +
> +#endif /* __UGECON_H */
> +
> -- 
> 1.6.3.3
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev

[RFC PATCH v2 02/11] powerpc: gamecube: device tree

[Albert Herranz]

Add a device tree source file for the Nintendo GameCube video game console.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
v1 -> v2
- Document new bindings in Documentation/powerpc/dts-bindings.
  Suggestion by Grant Likely.
- Use same form for model property and compatible properties on the root
  node.  Suggestion by Grant Likely.
- Drop the model property in the soc node.  Suggestion by Grant Likely.
- Move interrupt-parent to the soc node instead of explicitly adding it to
  each child node.  Suggestion by Grant Likely.
- Declare all available memory and deal with the fb area in the platform
  code. Suggestion by Segher Boessenkool.
- Transform the "auxram" node into the "dsp" node, create an "auxram" node
  within the "dsp" node. Suggestion by Segher Boessenkool.
- Rename the "soc" node to "flipper". Suggestion by Benjamin Herrenschmidt.
- Remove the usbgecko node from the device tree and autodetect it in
  platform code. Suggestion by Segher Boessenkool.
- Remove clock-frequency property from the soc node.
  Suggestion by Segher Boessenkool.
- Create a flipper-processor-interface node and place flipper-pic into it.
  Suggestion by Segher Boessenkool.
- Remove #interrupt-cells from the flipper node.
  Suggestion by Segher Boessenkool.
- Massive cleanups. Suggestions by Segher Boessenkool.

 .../powerpc/dts-bindings/nintendo/gamecube.txt     |  109 +++++++++++++++++++
 arch/powerpc/boot/dts/gamecube.dts                 |  114 ++++++++++++++++++++
 2 files changed, 223 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/powerpc/dts-bindings/nintendo/gamecube.txt
 create mode 100644 arch/powerpc/boot/dts/gamecube.dts

diff --git a/Documentation/powerpc/dts-bindings/nintendo/gamecube.txt b/Documentation/powerpc/dts-bindings/nintendo/gamecube.txt
new file mode 100644
index 0000000..b558585
--- /dev/null
+++ b/Documentation/powerpc/dts-bindings/nintendo/gamecube.txt
@@ -0,0 +1,109 @@
+
+Nintendo GameCube device tree
+=============================
+
+1) The "flipper" node
+
+  This node represents the multi-function "Flipper" chip, which packages
+  many of the devices found in the Nintendo GameCube.
+
+  Required properties:
+
+   - compatible : Should be "nintendo,flipper"
+
+1.a) The Video Interface (VI) node
+
+  Represents the interface between the graphics processor and a external
+  video encoder.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-vi"
+   - reg : should contain the VI registers location and length
+   - interrupts : should contain the VI interrupt
+
+1.b) The Processor Interface (PI) node
+
+  Represents the data and control interface between the main processor
+  and graphics and audio processor.
+
+  Required properties:
+
+  - compatible : should be "nintendo,flipper-pi"
+  - reg : should contain the PI registers location and length
+
+1.b.i) The "Flipper" interrupt controller node
+
+  Represents the interrupt controller within the "Flipper" chip.
+  The node for the "Flipper" interrupt controller must be placed under
+  the PI node.
+
+  Required properties:
+
+  - compatible : should be "nintendo,flipper-pic"
+
+1.c) The Digital Signal Procesor (DSP) node
+
+  Represents the digital signal processor interface, designed to offload
+  audio related tasks.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-dsp"
+   - reg : should contain the DSP registers location and length
+   - interrupts : should contain the DSP interrupt
+
+1.c.i) The Auxiliary RAM (ARAM) node
+
+  Represents the non cpu-addressable ram designed mainly to store audio
+  related information.
+  The ARAM node must be placed under the DSP node.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-aram"
+   - reg : should contain the ARAM start (zero-based) and length
+
+1.d) The Disk Interface (DI) node
+
+  Represents the interface used to communicate with mass storage devices.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-di"
+   - reg : should contain the DI registers location and length
+   - interrupts : should contain the DI interrupt
+
+1.e) The Audio Interface (AI) node
+
+  Represents the interface to the external 16-bit stereo digital-to-analog
+  converter.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-ai"
+   - reg : should contain the AI registers location and length
+   - interrupts : should contain the AI interrupt
+
+1.f) The Serial Interface (SI) node
+
+  Represents the interface to the four single bit serial interfaces.
+  The SI is a proprietary serial interface used normally to control gamepads.
+  It's NOT a RS232-type interface.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-si"
+   - reg : should contain the SI registers location and length
+   - interrupts : should contain the SI interrupt
+
+1.g) The External Interface (EXI) node
+
+  Represents the multi-channel SPI-like interface.
+
+  Required properties:
+
+   - compatible : should be "nintendo,flipper-exi"
+   - reg : should contain the EXI registers location and length
+   - interrupts : should contain the EXI interrupt
+
diff --git a/arch/powerpc/boot/dts/gamecube.dts b/arch/powerpc/boot/dts/gamecube.dts
new file mode 100644
index 0000000..ef3be0e
--- /dev/null
+++ b/arch/powerpc/boot/dts/gamecube.dts
@@ -0,0 +1,114 @@
+/*
+ * arch/powerpc/boot/dts/gamecube.dts
+ *
+ * Nintendo GameCube platform device tree source
+ * Copyright (C) 2007-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * 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.
+ *
+ */
+
+/dts-v1/;
+
+/ {
+	model = "nintendo,gamecube";
+	compatible = "nintendo,gamecube";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	chosen {
+		bootargs = "root=/dev/gcnsda2 rootwait udbg-immortal";
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0x00000000 0x01800000>;
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,gekko@0 {
+			device_type = "cpu";
+			reg = <0>;
+			clock-frequency = <486000000>; /* 486MHz */
+			bus-frequency = <162000000>; /* 162MHz core-to-bus 3x */
+			timebase-frequency = <40500000>; /* 162MHz / 4 */
+			i-cache-line-size = <32>;
+			d-cache-line-size = <32>;
+			i-cache-size = <32768>;
+			d-cache-size = <32768>;
+		};
+	};
+
+	/* devices contained int the flipper chipset */
+	flipper {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "nintendo,flipper";
+		ranges = <0x0c000000 0x0c000000 0x00010000>;
+		interrupt-parent = <&PIC>;
+
+		video@0c002000 {
+			compatible = "nintendo,flipper-vi";
+			reg = <0x0c002000 0x100>;
+			interrupts = <8>;
+		};
+
+		processor-interface@0c003000 {
+			compatible = "nintendo,flipper-pi";
+			reg = <0x0c003000 0x100>;
+
+			PIC: pic {
+				#interrupt-cells = <1>;
+				compatible = "nintendo,flipper-pic";
+				interrupt-controller;
+			};
+		};
+
+		dsp@0c005000 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			compatible = "nintendo,flipper-dsp";
+			reg = <0x0c005000 0x200>;
+			interrupts = <6>;
+
+			memory@0 {
+				compatible = "nintendo,flipper-aram";
+				reg = <0 0x1000000>;	/* 16MB */
+			};
+		};
+
+		disk@0c006000 {
+			compatible = "nintendo,flipper-di";
+			reg = <0x0c006000 0x40>;
+			interrupts = <2>;
+		};
+
+		audio@0c006c00 {
+			compatible = "nintendo,flipper-ai";
+			reg = <0x0c006c00 0x20>;
+			interrupts = <6>;
+		};
+
+		gamepad-controller@0c006400 {
+			compatible = "nintendo,flipper-si";
+			reg = <0x0c006400 0x100>;
+			interrupts = <3>;
+		};
+
+		/* External Interface bus */
+		exi@0c006800 {
+			compatible = "nintendo,flipper-exi";
+			reg = <0x0c006800 0x40>;
+			virtual-reg = <0x0c006800>;
+			interrupts = <4>;
+		};
+        };
+};
+
-- 
1.6.3.3

Re: [RFC PATCH v2 02/11] powerpc: gamecube: device tree

[Segher Boessenkool]

> Add a device tree source file for the Nintendo GameCube video game  
> console.
>
> Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>

> ---
> v1 -> v2
> - Document new bindings in Documentation/powerpc/dts-bindings.
>   Suggestion by Grant Likely.
> - Use same form for model property and compatible properties on the  
> root
>   node.  Suggestion by Grant Likely.
> - Drop the model property in the soc node.  Suggestion by Grant  
> Likely.
> - Move interrupt-parent to the soc node instead of explicitly  
> adding it to
>   each child node.  Suggestion by Grant Likely.
> - Declare all available memory and deal with the fb area in the  
> platform
>   code. Suggestion by Segher Boessenkool.
> - Transform the "auxram" node into the "dsp" node, create an  
> "auxram" node
>   within the "dsp" node. Suggestion by Segher Boessenkool.
> - Rename the "soc" node to "flipper". Suggestion by Benjamin  
> Herrenschmidt.
> - Remove the usbgecko node from the device tree and autodetect it in
>   platform code. Suggestion by Segher Boessenkool.
> - Remove clock-frequency property from the soc node.
>   Suggestion by Segher Boessenkool.
> - Create a flipper-processor-interface node and place flipper-pic  
> into it.
>   Suggestion by Segher Boessenkool.
> - Remove #interrupt-cells from the flipper node.
>   Suggestion by Segher Boessenkool.
> - Massive cleanups. Suggestions by Segher Boessenkool.
>
>  .../powerpc/dts-bindings/nintendo/gamecube.txt     |  109 +++++++++ 
> ++++++++++
>  arch/powerpc/boot/dts/gamecube.dts                 |  114 +++++++++ 
> +++++++++++
>  2 files changed, 223 insertions(+), 0 deletions(-)
>  create mode 100644 Documentation/powerpc/dts-bindings/nintendo/ 
> gamecube.txt
>  create mode 100644 arch/powerpc/boot/dts/gamecube.dts
>
> diff --git a/Documentation/powerpc/dts-bindings/nintendo/ 
> gamecube.txt b/Documentation/powerpc/dts-bindings/nintendo/ 
> gamecube.txt
> new file mode 100644
> index 0000000..b558585
> --- /dev/null
> +++ b/Documentation/powerpc/dts-bindings/nintendo/gamecube.txt
> @@ -0,0 +1,109 @@
> +
> +Nintendo GameCube device tree
> +=============================
> +
> +1) The "flipper" node
> +
> +  This node represents the multi-function "Flipper" chip, which  
> packages
> +  many of the devices found in the Nintendo GameCube.
> +
> +  Required properties:
> +
> +   - compatible : Should be "nintendo,flipper"
> +
> +1.a) The Video Interface (VI) node
> +
> +  Represents the interface between the graphics processor and a  
> external
> +  video encoder.
> +
> +  Required properties:
> +
> +   - compatible : should be "nintendo,flipper-vi"
> +   - reg : should contain the VI registers location and length
> +   - interrupts : should contain the VI interrupt
> +
> +1.b) The Processor Interface (PI) node
> +
> +  Represents the data and control interface between the main  
> processor
> +  and graphics and audio processor.
> +
> +  Required properties:
> +
> +  - compatible : should be "nintendo,flipper-pi"
> +  - reg : should contain the PI registers location and length
> +
> +1.b.i) The "Flipper" interrupt controller node
> +
> +  Represents the interrupt controller within the "Flipper" chip.
> +  The node for the "Flipper" interrupt controller must be placed  
> under
> +  the PI node.
> +
> +  Required properties:
> +
> +  - compatible : should be "nintendo,flipper-pic"
> +
> +1.c) The Digital Signal Procesor (DSP) node
> +
> +  Represents the digital signal processor interface, designed to  
> offload
> +  audio related tasks.
> +
> +  Required properties:
> +
> +   - compatible : should be "nintendo,flipper-dsp"
> +   - reg : should contain the DSP registers location and length
> +   - interrupts : should contain the DSP interrupt
> +
> +1.c.i) The Auxiliary RAM (ARAM) node
> +
> +  Represents the non cpu-addressable ram designed mainly to store  
> audio
> +  related information.
> +  The ARAM node must be placed under the DSP node.
> +
> +  Required properties:
> +
> +   - compatible : should be "nintendo,flipper-aram"
> +   - reg : should contain the ARAM start (zero-based) and length
> +
> +1.d) The Disk Interface (DI) node
> +
> +  Represents the interface used to communicate with mass storage  
> devices.
> +
> +  Required properties:
> +
> +   - compatible : should be "nintendo,flipper-di"
> +   - reg : should contain the DI registers location and length
> +   - interrupts : should contain the DI interrupt
> +
> +1.e) The Audio Interface (AI) node
> +
> +  Represents the interface to the external 16-bit stereo digital- 
> to-analog
> +  converter.
> +
> +  Required properties:
> +
> +   - compatible : should be "nintendo,flipper-ai"
> +   - reg : should contain the AI registers location and length
> +   - interrupts : should contain the AI interrupt
> +
> +1.f) The Serial Interface (SI) node
> +
> +  Represents the interface to the four single bit serial interfaces.
> +  The SI is a proprietary serial interface used normally to  
> control gamepads.
> +  It's NOT a RS232-type interface.
> +
> +  Required properties:
> +
> +   - compatible : should be "nintendo,flipper-si"
> +   - reg : should contain the SI registers location and length
> +   - interrupts : should contain the SI interrupt
> +
> +1.g) The External Interface (EXI) node
> +
> +  Represents the multi-channel SPI-like interface.
> +
> +  Required properties:
> +
> +   - compatible : should be "nintendo,flipper-exi"
> +   - reg : should contain the EXI registers location and length
> +   - interrupts : should contain the EXI interrupt
> +
> diff --git a/arch/powerpc/boot/dts/gamecube.dts b/arch/powerpc/boot/ 
> dts/gamecube.dts
> new file mode 100644
> index 0000000..ef3be0e
> --- /dev/null
> +++ b/arch/powerpc/boot/dts/gamecube.dts
> @@ -0,0 +1,114 @@
> +/*
> + * arch/powerpc/boot/dts/gamecube.dts
> + *
> + * Nintendo GameCube platform device tree source
> + * Copyright (C) 2007-2009 The GameCube Linux Team
> + * Copyright (C) 2007,2008,2009 Albert Herranz
> + *
> + * 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.
> + *
> + */
> +
> +/dts-v1/;
> +
> +/ {
> +	model = "nintendo,gamecube";
> +	compatible = "nintendo,gamecube";
> +	#address-cells = <1>;
> +	#size-cells = <1>;
> +
> +	chosen {
> +		bootargs = "root=/dev/gcnsda2 rootwait udbg-immortal";
> +	};
> +
> +	memory {
> +		device_type = "memory";
> +		reg = <0x00000000 0x01800000>;
> +	};
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		PowerPC,gekko@0 {
> +			device_type = "cpu";
> +			reg = <0>;
> +			clock-frequency = <486000000>; /* 486MHz */
> +			bus-frequency = <162000000>; /* 162MHz core-to-bus 3x */
> +			timebase-frequency = <40500000>; /* 162MHz / 4 */
> +			i-cache-line-size = <32>;
> +			d-cache-line-size = <32>;
> +			i-cache-size = <32768>;
> +			d-cache-size = <32768>;
> +		};
> +	};
> +
> +	/* devices contained int the flipper chipset */
> +	flipper {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		compatible = "nintendo,flipper";
> +		ranges = <0x0c000000 0x0c000000 0x00010000>;
> +		interrupt-parent = <&PIC>;
> +
> +		video@0c002000 {
> +			compatible = "nintendo,flipper-vi";
> +			reg = <0x0c002000 0x100>;
> +			interrupts = <8>;
> +		};
> +
> +		processor-interface@0c003000 {
> +			compatible = "nintendo,flipper-pi";
> +			reg = <0x0c003000 0x100>;
> +
> +			PIC: pic {
> +				#interrupt-cells = <1>;
> +				compatible = "nintendo,flipper-pic";
> +				interrupt-controller;
> +			};
> +		};
> +
> +		dsp@0c005000 {
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			compatible = "nintendo,flipper-dsp";
> +			reg = <0x0c005000 0x200>;
> +			interrupts = <6>;
> +
> +			memory@0 {
> +				compatible = "nintendo,flipper-aram";
> +				reg = <0 0x1000000>;	/* 16MB */
> +			};
> +		};
> +
> +		disk@0c006000 {
> +			compatible = "nintendo,flipper-di";
> +			reg = <0x0c006000 0x40>;
> +			interrupts = <2>;
> +		};
> +
> +		audio@0c006c00 {
> +			compatible = "nintendo,flipper-ai";
> +			reg = <0x0c006c00 0x20>;
> +			interrupts = <6>;
> +		};
> +
> +		gamepad-controller@0c006400 {
> +			compatible = "nintendo,flipper-si";
> +			reg = <0x0c006400 0x100>;
> +			interrupts = <3>;
> +		};
> +
> +		/* External Interface bus */
> +		exi@0c006800 {
> +			compatible = "nintendo,flipper-exi";
> +			reg = <0x0c006800 0x40>;
> +			virtual-reg = <0x0c006800>;
> +			interrupts = <4>;
> +		};
> +        };
> +};
> +
> -- 
> 1.6.3.3
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev

[RFC PATCH v2 03/11] powerpc: gamecube: bootwrapper bits

[Albert Herranz]

Add support for the Nintendo GameCube video game console to the powerpc
bootwrapper.

dtbImage.gamecube is a wrapped image that contains a flat device tree,
an entry point compatible with SDload, and an optional initrd.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
v1 -> v2
- Use a separate asm file for the entry point code.
  Suggestion by Segher Boessenkool and Benjamin Herrenschmidt.
- Do not make assumptions about the state of the cache and MMU on
  entry, eliminating dependencies on a particular bootloader.
  Suggestion by Segher Boessenkool.
- Use consistently the same (easier to read) form of bcl to load the
  next instruction address in LR. Suggestion by Segher Boessenkool.
- Identity map I/O memory too to avoid confusions.
  Suggestion by Segher Boessenkool.
- Probe dinamically for usbgecko. Suggestion by Segher Boessenkool.

 arch/powerpc/boot/Makefile        |    4 +-
 arch/powerpc/boot/gamecube-head.S |  111 +++++++++++++++++++++++++++++++++++++
 arch/powerpc/boot/gamecube.c      |   35 ++++++++++++
 arch/powerpc/boot/wrapper         |    4 +
 4 files changed, 153 insertions(+), 1 deletions(-)
 create mode 100644 arch/powerpc/boot/gamecube-head.S
 create mode 100644 arch/powerpc/boot/gamecube.c

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 44bce21..3e70aab 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -76,7 +76,8 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c
 		cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
 		cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
 		virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
-		cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c
+		cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c \
+		gamecube-head.S gamecube.c
 src-boot := $(src-wlib) $(src-plat) empty.c
 
 src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -254,6 +255,7 @@ image-$(CONFIG_KSI8560)			+= cuImage.ksi8560
 image-$(CONFIG_STORCENTER)		+= cuImage.storcenter
 image-$(CONFIG_MPC7448HPC2)		+= cuImage.mpc7448hpc2
 image-$(CONFIG_PPC_C2K)			+= cuImage.c2k
+image-$(CONFIG_GAMECUBE)		+= dtbImage.gamecube
 
 # Board port in arch/powerpc/platform/amigaone/Kconfig
 image-$(CONFIG_AMIGAONE)		+= cuImage.amigaone
diff --git a/arch/powerpc/boot/gamecube-head.S b/arch/powerpc/boot/gamecube-head.S
new file mode 100644
index 0000000..65a9b2a
--- /dev/null
+++ b/arch/powerpc/boot/gamecube-head.S
@@ -0,0 +1,111 @@
+/*
+ * arch/powerpc/boot/gamecube-head.S
+ *
+ * Nintendo GameCube bootwrapper entry.
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * 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 "ppc_asm.h"
+
+/*
+ * The entry code does no assumptions regarding:
+ * - if the data and instruction caches are enabled or not
+ * - if the MMU is enabled or not
+ *
+ * We enable the caches if not already enabled, enable the MMU with an
+ * identity mapping scheme and jump to the start code.
+ */
+
+	.text
+
+	.globl _zimage_start
+_zimage_start:
+
+	/* turn the MMU off */
+	mfmsr	9
+	rlwinm	9, 9, 0, ~((1<<4)|(1<<5)) /* MSR_DR|MSR_IR */
+	bcl	20, 31, 1f
+1:
+	mflr	8
+	clrlwi	8, 8, 3		/* convert to a real address */
+	addi	8, 8, _mmu_off - 1b
+	mtsrr0	8
+	mtsrr1	9
+	rfi
+_mmu_off:
+	/* MMU disabled */
+
+	/* setup BATs */
+	isync
+	li      8, 0
+	mtspr	0x210, 8	/* IBAT0U */
+	mtspr	0x212, 8	/* IBAT1U */
+	mtspr	0x214, 8	/* IBAT2U */
+	mtspr	0x216, 8	/* IBAT3U */
+	mtspr	0x218, 8	/* DBAT0U */
+	mtspr	0x21a, 8	/* DBAT1U */
+	mtspr	0x21c, 8	/* DBAT2U */
+	mtspr	0x21e, 8	/* DBAT3U */
+
+	li	8, 0x01ff	/* first 16MiB */
+	li	9, 0x0002	/* rw */
+	mtspr	0x211, 9	/* IBAT0L */
+	mtspr	0x210, 8	/* IBAT0U */
+	mtspr	0x219, 9	/* DBAT0L */
+	mtspr	0x218, 8	/* DBAT0U */
+
+	lis	8, 0x0c00	/* I/O mem */
+	ori	8, 8, 0x3ff	/* 32MiB */
+	lis	9, 0x0c00
+	ori	9, 9, 0x002a	/* uncached, guarded, rw */
+	mtspr	0x21b, 9	/* DBAT1L */
+	mtspr	0x21a, 8	/* DBAT1U */
+
+	lis	8, 0x0100	/* next 8MiB */
+	ori	8, 8, 0x00ff	/* 8MiB */
+	lis	9, 0x0100
+	ori	9, 9, 0x0002	/* rw */
+	mtspr	0x215, 9	/* IBAT2L */
+	mtspr	0x214, 8	/* IBAT2U */
+	mtspr	0x21d, 9	/* DBAT2L */
+	mtspr	0x21c, 8	/* DBAT2U */
+
+	/* enable and invalidate the caches if not already enabled */
+	mfspr	8, 0x3f0	/* HID0 */
+	andi.	0, 8, (1<<15)		/* HID0_ICE */
+	bne	1f
+	ori	8, 8, (1<<15)|(1<<11)	/* HID0_ICE|HID0_ICFI*/
+1:
+	andi.	0, 8, (1<<14)		/* HID0_DCE */
+	bne	1f
+	ori	8, 8, (1<<14)|(1<<10)	/* HID0_DCE|HID0_DCFI*/
+1:
+	mtspr	0x3f0, 8	/* HID0 */
+	isync
+
+	/* initialize arguments */
+	li	3, 0
+	li	4, 0
+	li	5, 0
+
+	/* turn the MMU on */
+	bcl	20, 31, 1f
+1:
+	mflr	8
+	addi	8, 8, _mmu_on - 1b
+	mfmsr	9
+	ori	9, 9, (1<<4)|(1<<5) /* MSR_DR|MSR_IR */
+	mtsrr0	8
+	mtsrr1	9
+	sync
+	rfi
+_mmu_on:
+	b _zimage_start_lib
+
diff --git a/arch/powerpc/boot/gamecube.c b/arch/powerpc/boot/gamecube.c
new file mode 100644
index 0000000..28ae705
--- /dev/null
+++ b/arch/powerpc/boot/gamecube.c
@@ -0,0 +1,35 @@
+/*
+ * arch/powerpc/boot/gamecube.c
+ *
+ * Nintendo GameCube bootwrapper support
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * 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 <stddef.h>
+#include "stdio.h"
+#include "types.h"
+#include "io.h"
+#include "ops.h"
+
+#include "ugecon.h"
+
+BSS_STACK(8192);
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5)
+{
+	u32 heapsize = 16*1024*1024 - (u32)_end;
+
+	simple_alloc_init(_end, heapsize, 32, 64);
+	fdt_init(_dtb_start);
+
+	if (ug_probe())
+		console_ops.write = ug_console_write;
+}
+
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index ac9e9a5..5b9206f 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -230,6 +230,10 @@ xpedite52*)
     link_address='0x1400000'
     platformo=$object/cuboot-85xx.o
     ;;
+gamecube)
+    link_address='0x600000'
+    platformo="$object/$platform-head.o $object/$platform.o"
+    ;;
 esac
 
 vmz="$tmpdir/`basename \"$kernel\"`.$ext"
-- 
1.6.3.3

Re: [RFC PATCH v2 03/11] powerpc: gamecube: bootwrapper bits

[Segher Boessenkool]

> Add support for the Nintendo GameCube video game console to the  
> powerpc
> bootwrapper.
>
> dtbImage.gamecube is a wrapped image that contains a flat device tree,
> an entry point compatible with SDload, and an optional initrd.
>
> Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>

> ---
> v1 -> v2
> - Use a separate asm file for the entry point code.
>   Suggestion by Segher Boessenkool and Benjamin Herrenschmidt.
> - Do not make assumptions about the state of the cache and MMU on
>   entry, eliminating dependencies on a particular bootloader.
>   Suggestion by Segher Boessenkool.
> - Use consistently the same (easier to read) form of bcl to load the
>   next instruction address in LR. Suggestion by Segher Boessenkool.
> - Identity map I/O memory too to avoid confusions.
>   Suggestion by Segher Boessenkool.
> - Probe dinamically for usbgecko. Suggestion by Segher Boessenkool.
>
>  arch/powerpc/boot/Makefile        |    4 +-
>  arch/powerpc/boot/gamecube-head.S |  111 ++++++++++++++++++++++++++ 
> +++++++++++
>  arch/powerpc/boot/gamecube.c      |   35 ++++++++++++
>  arch/powerpc/boot/wrapper         |    4 +
>  4 files changed, 153 insertions(+), 1 deletions(-)
>  create mode 100644 arch/powerpc/boot/gamecube-head.S
>  create mode 100644 arch/powerpc/boot/gamecube.c
>
> diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
> index 44bce21..3e70aab 100644
> --- a/arch/powerpc/boot/Makefile
> +++ b/arch/powerpc/boot/Makefile
> @@ -76,7 +76,8 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c  
> cuboot-83xx.c cuboot-85xx.c holly.c
>  		cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
>  		cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
>  		virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
> -		cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c
> +		cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c \
> +		gamecube-head.S gamecube.c
>  src-boot := $(src-wlib) $(src-plat) empty.c
>
>  src-boot := $(addprefix $(obj)/, $(src-boot))
> @@ -254,6 +255,7 @@ image-$(CONFIG_KSI8560)			+= cuImage.ksi8560
>  image-$(CONFIG_STORCENTER)		+= cuImage.storcenter
>  image-$(CONFIG_MPC7448HPC2)		+= cuImage.mpc7448hpc2
>  image-$(CONFIG_PPC_C2K)			+= cuImage.c2k
> +image-$(CONFIG_GAMECUBE)		+= dtbImage.gamecube
>
>  # Board port in arch/powerpc/platform/amigaone/Kconfig
>  image-$(CONFIG_AMIGAONE)		+= cuImage.amigaone
> diff --git a/arch/powerpc/boot/gamecube-head.S b/arch/powerpc/boot/ 
> gamecube-head.S
> new file mode 100644
> index 0000000..65a9b2a
> --- /dev/null
> +++ b/arch/powerpc/boot/gamecube-head.S
> @@ -0,0 +1,111 @@
> +/*
> + * arch/powerpc/boot/gamecube-head.S
> + *
> + * Nintendo GameCube bootwrapper entry.
> + * Copyright (C) 2004-2009 The GameCube Linux Team
> + * Copyright (C) 2008,2009 Albert Herranz
> + *
> + * 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 "ppc_asm.h"
> +
> +/*
> + * The entry code does no assumptions regarding:
> + * - if the data and instruction caches are enabled or not
> + * - if the MMU is enabled or not
> + *
> + * We enable the caches if not already enabled, enable the MMU  
> with an
> + * identity mapping scheme and jump to the start code.
> + */
> +
> +	.text
> +
> +	.globl _zimage_start
> +_zimage_start:
> +
> +	/* turn the MMU off */
> +	mfmsr	9
> +	rlwinm	9, 9, 0, ~((1<<4)|(1<<5)) /* MSR_DR|MSR_IR */
> +	bcl	20, 31, 1f
> +1:
> +	mflr	8
> +	clrlwi	8, 8, 3		/* convert to a real address */
> +	addi	8, 8, _mmu_off - 1b
> +	mtsrr0	8
> +	mtsrr1	9
> +	rfi
> +_mmu_off:
> +	/* MMU disabled */
> +
> +	/* setup BATs */
> +	isync
> +	li      8, 0
> +	mtspr	0x210, 8	/* IBAT0U */
> +	mtspr	0x212, 8	/* IBAT1U */
> +	mtspr	0x214, 8	/* IBAT2U */
> +	mtspr	0x216, 8	/* IBAT3U */
> +	mtspr	0x218, 8	/* DBAT0U */
> +	mtspr	0x21a, 8	/* DBAT1U */
> +	mtspr	0x21c, 8	/* DBAT2U */
> +	mtspr	0x21e, 8	/* DBAT3U */
> +
> +	li	8, 0x01ff	/* first 16MiB */
> +	li	9, 0x0002	/* rw */
> +	mtspr	0x211, 9	/* IBAT0L */
> +	mtspr	0x210, 8	/* IBAT0U */
> +	mtspr	0x219, 9	/* DBAT0L */
> +	mtspr	0x218, 8	/* DBAT0U */
> +
> +	lis	8, 0x0c00	/* I/O mem */
> +	ori	8, 8, 0x3ff	/* 32MiB */
> +	lis	9, 0x0c00
> +	ori	9, 9, 0x002a	/* uncached, guarded, rw */
> +	mtspr	0x21b, 9	/* DBAT1L */
> +	mtspr	0x21a, 8	/* DBAT1U */
> +
> +	lis	8, 0x0100	/* next 8MiB */
> +	ori	8, 8, 0x00ff	/* 8MiB */
> +	lis	9, 0x0100
> +	ori	9, 9, 0x0002	/* rw */
> +	mtspr	0x215, 9	/* IBAT2L */
> +	mtspr	0x214, 8	/* IBAT2U */
> +	mtspr	0x21d, 9	/* DBAT2L */
> +	mtspr	0x21c, 8	/* DBAT2U */
> +
> +	/* enable and invalidate the caches if not already enabled */
> +	mfspr	8, 0x3f0	/* HID0 */
> +	andi.	0, 8, (1<<15)		/* HID0_ICE */
> +	bne	1f
> +	ori	8, 8, (1<<15)|(1<<11)	/* HID0_ICE|HID0_ICFI*/
> +1:
> +	andi.	0, 8, (1<<14)		/* HID0_DCE */
> +	bne	1f
> +	ori	8, 8, (1<<14)|(1<<10)	/* HID0_DCE|HID0_DCFI*/
> +1:
> +	mtspr	0x3f0, 8	/* HID0 */
> +	isync
> +
> +	/* initialize arguments */
> +	li	3, 0
> +	li	4, 0
> +	li	5, 0
> +
> +	/* turn the MMU on */
> +	bcl	20, 31, 1f
> +1:
> +	mflr	8
> +	addi	8, 8, _mmu_on - 1b
> +	mfmsr	9
> +	ori	9, 9, (1<<4)|(1<<5) /* MSR_DR|MSR_IR */
> +	mtsrr0	8
> +	mtsrr1	9
> +	sync
> +	rfi
> +_mmu_on:
> +	b _zimage_start_lib
> +
> diff --git a/arch/powerpc/boot/gamecube.c b/arch/powerpc/boot/ 
> gamecube.c
> new file mode 100644
> index 0000000..28ae705
> --- /dev/null
> +++ b/arch/powerpc/boot/gamecube.c
> @@ -0,0 +1,35 @@
> +/*
> + * arch/powerpc/boot/gamecube.c
> + *
> + * Nintendo GameCube bootwrapper support
> + * Copyright (C) 2004-2009 The GameCube Linux Team
> + * Copyright (C) 2008,2009 Albert Herranz
> + *
> + * 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 <stddef.h>
> +#include "stdio.h"
> +#include "types.h"
> +#include "io.h"
> +#include "ops.h"
> +
> +#include "ugecon.h"
> +
> +BSS_STACK(8192);
> +
> +void platform_init(unsigned long r3, unsigned long r4, unsigned  
> long r5)
> +{
> +	u32 heapsize = 16*1024*1024 - (u32)_end;
> +
> +	simple_alloc_init(_end, heapsize, 32, 64);
> +	fdt_init(_dtb_start);
> +
> +	if (ug_probe())
> +		console_ops.write = ug_console_write;
> +}
> +
> diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
> index ac9e9a5..5b9206f 100755
> --- a/arch/powerpc/boot/wrapper
> +++ b/arch/powerpc/boot/wrapper
> @@ -230,6 +230,10 @@ xpedite52*)
>      link_address='0x1400000'
>      platformo=$object/cuboot-85xx.o
>      ;;
> +gamecube)
> +    link_address='0x600000'
> +    platformo="$object/$platform-head.o $object/$platform.o"
> +    ;;
>  esac
>
>  vmz="$tmpdir/`basename \"$kernel\"`.$ext"
> -- 
> 1.6.3.3
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev

[RFC PATCH v2 04/11] powerpc: gamecube/wii: introduce GAMECUBE_COMMON

[Albert Herranz]

Add a config option GAMECUBE_COMMON to be used as a dependency for all
options common to the Nintendo GameCube and Wii video game consoles.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
 arch/powerpc/platforms/embedded6xx/Kconfig |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index 291ac9d..97a2dbc 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -90,3 +90,7 @@ config MPC10X_OPENPIC
 config MPC10X_STORE_GATHERING
 	bool "Enable MPC10x store gathering"
 	depends on MPC10X_BRIDGE
+
+config GAMECUBE_COMMON
+	bool
+
-- 
1.6.3.3

[RFC PATCH v2 05/11] powerpc: gamecube/wii: declare as non-coherent platforms

[Albert Herranz]

The processors bundled in the Nintendo GameCube and Wii video game consoles
require explicit cache handling when DMA engines are used.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
 arch/powerpc/platforms/Kconfig.cputype |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index e382cae..80d934b 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -312,7 +312,7 @@ config NR_CPUS
 
 config NOT_COHERENT_CACHE
 	bool
-	depends on 4xx || 8xx || E200 || PPC_MPC512x
+	depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
 	default y
 
 config CHECK_CACHE_COHERENCY
-- 
1.6.3.3

[RFC PATCH v2 06/11] powerpc: gamecube/wii: do not include PCI support

[Albert Herranz]

The Nintendo GameCube and Wii video game consoles do not have PCI hardware.
Avoid wasting their scarce memory by not including PCI support into the
kernel.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
v1 -> v2
- Drop selection of NOT_COHERENT_CACHE when GAMECUBE_COMMON is set
  and just make NOT_COHERENT_CACHE depend on GAMECUBE_COMMON.
  Suggestion by Arnd Bergmann.

 arch/powerpc/Kconfig |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 2ba14e7..84b2566 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -679,7 +679,7 @@ config PPC_PCI_CHOICE
 config PCI
 	bool "PCI support" if PPC_PCI_CHOICE
 	default y if !40x && !CPM2 && !8xx && !PPC_83xx \
-		&& !PPC_85xx && !PPC_86xx
+		&& !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 	default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 	default PCI_QSPAN if !4xx && !CPM2 && 8xx
 	select ARCH_SUPPORTS_MSI
-- 
1.6.3.3

[RFC PATCH v2 07/11] powerpc: gamecube/wii: udbg support for usbgecko

[Albert Herranz]

Add support for using the USB Gecko adapter via the udbg facility on
the Nintendo GameCube and Wii video game consoles.
The USB Gecko is a 3rd party memory card interface adapter that provides
a EXI (External Interface) to USB serial converter.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
v1 -> v2
- Get rid of 0-#ifdef'ed code. Suggestion by Segher Boessenkool.
- Probe dinamically for usbgecko. Suggestion by Segher Boessenkool.
- Adapt to updated device tree.

 arch/powerpc/platforms/embedded6xx/Kconfig         |   13 +
 arch/powerpc/platforms/embedded6xx/Makefile        |    1 +
 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c |  272 ++++++++++++++++++++
 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h |   30 +++
 4 files changed, 316 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
 create mode 100644 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h

diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index 97a2dbc..464e414 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -94,3 +94,16 @@ config MPC10X_STORE_GATHERING
 config GAMECUBE_COMMON
 	bool
 
+config USBGECKO_UDBG
+	bool "USB Gecko udbg console for the Nintendo GameCube/Wii"
+	depends on GAMECUBE_COMMON
+	help
+	  If you say yes to this option, support will be included for the
+	  USB Gecko adapter as an udbg console.
+	  The USB Gecko is a EXI to USB Serial converter that can be plugged
+	  into a memcard slot in the Nintendo GameCube/Wii.
+
+	  This driver bypasses the EXI layer completely.
+
+	  If in doubt, say N here.
+
diff --git a/arch/powerpc/platforms/embedded6xx/Makefile b/arch/powerpc/platforms/embedded6xx/Makefile
index 0773c08..0ab7492 100644
--- a/arch/powerpc/platforms/embedded6xx/Makefile
+++ b/arch/powerpc/platforms/embedded6xx/Makefile
@@ -7,3 +7,4 @@ obj-$(CONFIG_STORCENTER)	+= storcenter.o
 obj-$(CONFIG_PPC_HOLLY)		+= holly.o
 obj-$(CONFIG_PPC_PRPMC2800)	+= prpmc2800.o
 obj-$(CONFIG_PPC_C2K)		+= c2k.o
+obj-$(CONFIG_USBGECKO_UDBG)	+= usbgecko_udbg.o
diff --git a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
new file mode 100644
index 0000000..581ce61
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
@@ -0,0 +1,272 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
+ *
+ * udbg serial input/output routines for the USB Gecko adapter.
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * 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 <asm/io.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+
+#include <mm/mmu_decl.h>
+
+#include "usbgecko_udbg.h"
+
+
+#define EXI_CLK_32MHZ           5
+
+#define EXI_CSR                 0x00
+#define   EXI_CSR_CLKMASK       (0x7<<4)
+#define     EXI_CSR_CLK_32MHZ   (EXI_CLK_32MHZ<<4)
+#define   EXI_CSR_CSMASK        (0x7<<7)
+#define     EXI_CSR_CS_0        (0x1<<7)  /* Chip Select 001 */
+
+#define EXI_CR                  0x0c
+#define   EXI_CR_TSTART         (1<<0)
+#define   EXI_CR_WRITE		(1<<2)
+#define   EXI_CR_READ_WRITE     (2<<2)
+#define   EXI_CR_TLEN(len)      (((len)-1)<<4)
+
+#define EXI_DATA                0x10
+
+#define UG_READ_ATTEMPTS	100
+#define UG_WRITE_ATTEMPTS	100
+
+
+static void __iomem *ug_io_base;
+
+/*
+ * Performs one input/output transaction between the exi host and the usbgecko.
+ */
+static u32 ug_io_transaction(u32 in)
+{
+	u32 __iomem *csr_reg = ug_io_base + EXI_CSR;
+	u32 __iomem *data_reg = ug_io_base + EXI_DATA;
+	u32 __iomem *cr_reg = ug_io_base + EXI_CR;
+	u32 csr, data, cr;
+
+	/* select */
+	csr = EXI_CSR_CLK_32MHZ | EXI_CSR_CS_0;
+	out_be32(csr_reg, csr);
+
+	/* read/write */
+	data = in;
+	out_be32(data_reg, data);
+	cr = EXI_CR_TLEN(2) | EXI_CR_READ_WRITE | EXI_CR_TSTART;
+	out_be32(cr_reg, cr);
+
+	while (in_be32(cr_reg) & EXI_CR_TSTART)
+		barrier();
+
+	/* deselect */
+	out_be32(csr_reg, 0);
+
+	/* result */
+	data = in_be32(data_reg);
+
+	return data;
+}
+
+/*
+ * Returns true if an usbgecko adapter is found.
+ */
+static int ug_is_adapter_present(void)
+{
+	if (!ug_io_base)
+		return 0;
+
+	return ug_io_transaction(0x90000000) == 0x04700000;
+}
+
+/*
+ * Returns true if the TX fifo is ready for transmission.
+ */
+static int ug_is_txfifo_ready(void)
+{
+	return ug_io_transaction(0xc0000000) & 0x04000000;
+}
+
+/*
+ * Tries to transmit a character.
+ * If the TX fifo is not ready the result is undefined.
+ */
+static void ug_raw_putc(char ch)
+{
+	ug_io_transaction(0xb0000000 | (ch << 20));
+}
+
+/*
+ * Transmits a character.
+ * It silently fails if the TX fifo is not ready after a number of retries.
+ */
+static void ug_putc(char ch)
+{
+	int count = UG_WRITE_ATTEMPTS;
+
+	if (!ug_io_base)
+		return;
+
+	if (ch == '\n')
+		ug_putc('\r');
+
+	while (!ug_is_txfifo_ready() && count--)
+		barrier();
+	if (count)
+		ug_raw_putc(ch);
+}
+
+/*
+ * Returns true if the RX fifo is ready for transmission.
+ */
+static int ug_is_rxfifo_ready(void)
+{
+	return ug_io_transaction(0xd0000000) & 0x04000000;
+}
+
+/*
+ * Tries to receive a character.
+ * If a character is unavailable the function returns -1.
+ */
+static int ug_raw_getc(void)
+{
+	u32 data = ug_io_transaction(0xa0000000);
+	if (data & 0x08000000)
+		return (data >> 16) & 0xff;
+	else
+		return -1;
+}
+
+/*
+ * Receives a character.
+ * It fails if the RX fifo is not ready after a number of retries.
+ */
+static int ug_getc(void)
+{
+	int count = UG_READ_ATTEMPTS;
+
+	if (!ug_io_base)
+		return -1;
+
+	while (!ug_is_rxfifo_ready() && count--)
+		barrier();
+	return ug_raw_getc();
+}
+
+/*
+ * udbg functions.
+ *
+ */
+
+/*
+ * Transmits a character.
+ */
+void ug_udbg_putc(char ch)
+{
+	ug_putc(ch);
+}
+
+/*
+ * Receives a character. Waits until a character is available.
+ */
+static int ug_udbg_getc(void)
+{
+	int ch;
+
+	while ((ch = ug_getc()) == -1)
+		barrier();
+	return ch;
+}
+
+/*
+ * Receives a character. If a character is not available, returns -1.
+ */
+static int ug_udbg_getc_poll(void)
+{
+	if (!ug_is_rxfifo_ready())
+		return -1;
+	return ug_getc();
+}
+
+/*
+ * Retrieves and prepares the virtual address needed to access the hardware.
+ */
+static void __iomem *ug_udbg_setup_exi_io_base(struct device_node *np)
+{
+	void __iomem *exi_io_base = NULL;
+	phys_addr_t paddr;
+	const unsigned int *reg;
+
+	reg = of_get_property(np, "reg", NULL);
+	if (reg) {
+		paddr = of_translate_address(np, reg);
+		if (paddr)
+			exi_io_base = ioremap(paddr, reg[1]);
+	}
+	return exi_io_base;
+}
+
+/*
+ * Checks if a USB Gecko adapter is inserted in any memory card slot.
+ */
+static void __iomem *ug_udbg_probe(void __iomem *exi_io_base)
+{
+	int i;
+
+	/* look for a usbgecko on memcard slots A and B */
+	for (i = 0; i < 2; i++) {
+		ug_io_base = exi_io_base + 0x14 * i;
+		if (ug_is_adapter_present())
+			break;
+	}
+	if (i == 2)
+		ug_io_base = NULL;
+	return ug_io_base;
+
+}
+
+/*
+ * USB Gecko udbg support initialization.
+ */
+void __init ug_udbg_init(void)
+{
+	struct device_node *np;
+	void __iomem *exi_io_base;
+
+	if (ug_io_base)
+		udbg_printf("%s: early -> final\n", __func__);
+
+	np = of_find_compatible_node(NULL, NULL, "nintendo,flipper-exi");
+	if (!np) {
+		udbg_printf("%s: EXI node not found\n", __func__);
+		goto done;
+	}
+
+	exi_io_base = ug_udbg_setup_exi_io_base(np);
+	if (!exi_io_base) {
+		udbg_printf("%s: failed to setup EXI io base\n", __func__);
+		goto done;
+	}
+
+	if (!ug_udbg_probe(exi_io_base)) {
+		udbg_printf("usbgecko_udbg: not found\n");
+		iounmap(exi_io_base);
+	} else {
+		udbg_putc = ug_udbg_putc;
+		udbg_getc = ug_udbg_getc;
+		udbg_getc_poll = ug_udbg_getc_poll;
+		udbg_printf("usbgecko_udbg: ready\n");
+	}
+
+done:
+	if (np)
+		of_node_put(np);
+	return;
+}
diff --git a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
new file mode 100644
index 0000000..3929de3
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
@@ -0,0 +1,30 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
+ *
+ * udbg serial input/output routines for the USB Gecko adapter.
+ * Copyright (C) 2008-2009 The GameCube Linux Team
+ * Copyright (C) 2008,2009 Albert Herranz
+ *
+ * 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 __USBGECKO_UDBG_H
+#define __USBGECKO_UDBG_H
+
+#ifdef CONFIG_USBGECKO_UDBG
+
+extern void __init ug_udbg_init(void);
+
+#else
+
+static inline void __init ug_udbg_init(void)
+{
+}
+
+#endif /* CONFIG_USBGECKO_UDBG */
+
+#endif /* __USBGECKO_UDBG_H */
-- 
1.6.3.3

Re: [RFC PATCH v2 07/11] powerpc: gamecube/wii: udbg support for usbgecko

[Segher Boessenkool]

> Add support for using the USB Gecko adapter via the udbg facility on
> the Nintendo GameCube and Wii video game consoles.
> The USB Gecko is a 3rd party memory card interface adapter that  
> provides
> a EXI (External Interface) to USB serial converter.
>
> Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>

> ---
> v1 -> v2
> - Get rid of 0-#ifdef'ed code. Suggestion by Segher Boessenkool.
> - Probe dinamically for usbgecko. Suggestion by Segher Boessenkool.
> - Adapt to updated device tree.
>
>  arch/powerpc/platforms/embedded6xx/Kconfig         |   13 +
>  arch/powerpc/platforms/embedded6xx/Makefile        |    1 +
>  arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c |  272 +++++++++ 
> +++++++++++
>  arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h |   30 +++
>  4 files changed, 316 insertions(+), 0 deletions(-)
>  create mode 100644 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
>  create mode 100644 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
>
> diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/ 
> powerpc/platforms/embedded6xx/Kconfig
> index 97a2dbc..464e414 100644
> --- a/arch/powerpc/platforms/embedded6xx/Kconfig
> +++ b/arch/powerpc/platforms/embedded6xx/Kconfig
> @@ -94,3 +94,16 @@ config MPC10X_STORE_GATHERING
>  config GAMECUBE_COMMON
>  	bool
>
> +config USBGECKO_UDBG
> +	bool "USB Gecko udbg console for the Nintendo GameCube/Wii"
> +	depends on GAMECUBE_COMMON
> +	help
> +	  If you say yes to this option, support will be included for the
> +	  USB Gecko adapter as an udbg console.
> +	  The USB Gecko is a EXI to USB Serial converter that can be plugged
> +	  into a memcard slot in the Nintendo GameCube/Wii.
> +
> +	  This driver bypasses the EXI layer completely.
> +
> +	  If in doubt, say N here.
> +
> diff --git a/arch/powerpc/platforms/embedded6xx/Makefile b/arch/ 
> powerpc/platforms/embedded6xx/Makefile
> index 0773c08..0ab7492 100644
> --- a/arch/powerpc/platforms/embedded6xx/Makefile
> +++ b/arch/powerpc/platforms/embedded6xx/Makefile
> @@ -7,3 +7,4 @@ obj-$(CONFIG_STORCENTER)	+= storcenter.o
>  obj-$(CONFIG_PPC_HOLLY)		+= holly.o
>  obj-$(CONFIG_PPC_PRPMC2800)	+= prpmc2800.o
>  obj-$(CONFIG_PPC_C2K)		+= c2k.o
> +obj-$(CONFIG_USBGECKO_UDBG)	+= usbgecko_udbg.o
> diff --git a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c b/ 
> arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
> new file mode 100644
> index 0000000..581ce61
> --- /dev/null
> +++ b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
> @@ -0,0 +1,272 @@
> +/*
> + * arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
> + *
> + * udbg serial input/output routines for the USB Gecko adapter.
> + * Copyright (C) 2008-2009 The GameCube Linux Team
> + * Copyright (C) 2008,2009 Albert Herranz
> + *
> + * 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 <asm/io.h>
> +#include <asm/prom.h>
> +#include <asm/udbg.h>
> +
> +#include <mm/mmu_decl.h>
> +
> +#include "usbgecko_udbg.h"
> +
> +
> +#define EXI_CLK_32MHZ           5
> +
> +#define EXI_CSR                 0x00
> +#define   EXI_CSR_CLKMASK       (0x7<<4)
> +#define     EXI_CSR_CLK_32MHZ   (EXI_CLK_32MHZ<<4)
> +#define   EXI_CSR_CSMASK        (0x7<<7)
> +#define     EXI_CSR_CS_0        (0x1<<7)  /* Chip Select 001 */
> +
> +#define EXI_CR                  0x0c
> +#define   EXI_CR_TSTART         (1<<0)
> +#define   EXI_CR_WRITE		(1<<2)
> +#define   EXI_CR_READ_WRITE     (2<<2)
> +#define   EXI_CR_TLEN(len)      (((len)-1)<<4)
> +
> +#define EXI_DATA                0x10
> +
> +#define UG_READ_ATTEMPTS	100
> +#define UG_WRITE_ATTEMPTS	100
> +
> +
> +static void __iomem *ug_io_base;
> +
> +/*
> + * Performs one input/output transaction between the exi host and  
> the usbgecko.
> + */
> +static u32 ug_io_transaction(u32 in)
> +{
> +	u32 __iomem *csr_reg = ug_io_base + EXI_CSR;
> +	u32 __iomem *data_reg = ug_io_base + EXI_DATA;
> +	u32 __iomem *cr_reg = ug_io_base + EXI_CR;
> +	u32 csr, data, cr;
> +
> +	/* select */
> +	csr = EXI_CSR_CLK_32MHZ | EXI_CSR_CS_0;
> +	out_be32(csr_reg, csr);
> +
> +	/* read/write */
> +	data = in;
> +	out_be32(data_reg, data);
> +	cr = EXI_CR_TLEN(2) | EXI_CR_READ_WRITE | EXI_CR_TSTART;
> +	out_be32(cr_reg, cr);
> +
> +	while (in_be32(cr_reg) & EXI_CR_TSTART)
> +		barrier();
> +
> +	/* deselect */
> +	out_be32(csr_reg, 0);
> +
> +	/* result */
> +	data = in_be32(data_reg);
> +
> +	return data;
> +}
> +
> +/*
> + * Returns true if an usbgecko adapter is found.
> + */
> +static int ug_is_adapter_present(void)
> +{
> +	if (!ug_io_base)
> +		return 0;
> +
> +	return ug_io_transaction(0x90000000) == 0x04700000;
> +}
> +
> +/*
> + * Returns true if the TX fifo is ready for transmission.
> + */
> +static int ug_is_txfifo_ready(void)
> +{
> +	return ug_io_transaction(0xc0000000) & 0x04000000;
> +}
> +
> +/*
> + * Tries to transmit a character.
> + * If the TX fifo is not ready the result is undefined.
> + */
> +static void ug_raw_putc(char ch)
> +{
> +	ug_io_transaction(0xb0000000 | (ch << 20));
> +}
> +
> +/*
> + * Transmits a character.
> + * It silently fails if the TX fifo is not ready after a number of  
> retries.
> + */
> +static void ug_putc(char ch)
> +{
> +	int count = UG_WRITE_ATTEMPTS;
> +
> +	if (!ug_io_base)
> +		return;
> +
> +	if (ch == '\n')
> +		ug_putc('\r');
> +
> +	while (!ug_is_txfifo_ready() && count--)
> +		barrier();
> +	if (count)
> +		ug_raw_putc(ch);
> +}
> +
> +/*
> + * Returns true if the RX fifo is ready for transmission.
> + */
> +static int ug_is_rxfifo_ready(void)
> +{
> +	return ug_io_transaction(0xd0000000) & 0x04000000;
> +}
> +
> +/*
> + * Tries to receive a character.
> + * If a character is unavailable the function returns -1.
> + */
> +static int ug_raw_getc(void)
> +{
> +	u32 data = ug_io_transaction(0xa0000000);
> +	if (data & 0x08000000)
> +		return (data >> 16) & 0xff;
> +	else
> +		return -1;
> +}
> +
> +/*
> + * Receives a character.
> + * It fails if the RX fifo is not ready after a number of retries.
> + */
> +static int ug_getc(void)
> +{
> +	int count = UG_READ_ATTEMPTS;
> +
> +	if (!ug_io_base)
> +		return -1;
> +
> +	while (!ug_is_rxfifo_ready() && count--)
> +		barrier();
> +	return ug_raw_getc();
> +}
> +
> +/*
> + * udbg functions.
> + *
> + */
> +
> +/*
> + * Transmits a character.
> + */
> +void ug_udbg_putc(char ch)
> +{
> +	ug_putc(ch);
> +}
> +
> +/*
> + * Receives a character. Waits until a character is available.
> + */
> +static int ug_udbg_getc(void)
> +{
> +	int ch;
> +
> +	while ((ch = ug_getc()) == -1)
> +		barrier();
> +	return ch;
> +}
> +
> +/*
> + * Receives a character. If a character is not available, returns -1.
> + */
> +static int ug_udbg_getc_poll(void)
> +{
> +	if (!ug_is_rxfifo_ready())
> +		return -1;
> +	return ug_getc();
> +}
> +
> +/*
> + * Retrieves and prepares the virtual address needed to access the  
> hardware.
> + */
> +static void __iomem *ug_udbg_setup_exi_io_base(struct device_node  
> *np)
> +{
> +	void __iomem *exi_io_base = NULL;
> +	phys_addr_t paddr;
> +	const unsigned int *reg;
> +
> +	reg = of_get_property(np, "reg", NULL);
> +	if (reg) {
> +		paddr = of_translate_address(np, reg);
> +		if (paddr)
> +			exi_io_base = ioremap(paddr, reg[1]);
> +	}
> +	return exi_io_base;
> +}
> +
> +/*
> + * Checks if a USB Gecko adapter is inserted in any memory card slot.
> + */
> +static void __iomem *ug_udbg_probe(void __iomem *exi_io_base)
> +{
> +	int i;
> +
> +	/* look for a usbgecko on memcard slots A and B */
> +	for (i = 0; i < 2; i++) {
> +		ug_io_base = exi_io_base + 0x14 * i;
> +		if (ug_is_adapter_present())
> +			break;
> +	}
> +	if (i == 2)
> +		ug_io_base = NULL;
> +	return ug_io_base;
> +
> +}
> +
> +/*
> + * USB Gecko udbg support initialization.
> + */
> +void __init ug_udbg_init(void)
> +{
> +	struct device_node *np;
> +	void __iomem *exi_io_base;
> +
> +	if (ug_io_base)
> +		udbg_printf("%s: early -> final\n", __func__);
> +
> +	np = of_find_compatible_node(NULL, NULL, "nintendo,flipper-exi");
> +	if (!np) {
> +		udbg_printf("%s: EXI node not found\n", __func__);
> +		goto done;
> +	}
> +
> +	exi_io_base = ug_udbg_setup_exi_io_base(np);
> +	if (!exi_io_base) {
> +		udbg_printf("%s: failed to setup EXI io base\n", __func__);
> +		goto done;
> +	}
> +
> +	if (!ug_udbg_probe(exi_io_base)) {
> +		udbg_printf("usbgecko_udbg: not found\n");
> +		iounmap(exi_io_base);
> +	} else {
> +		udbg_putc = ug_udbg_putc;
> +		udbg_getc = ug_udbg_getc;
> +		udbg_getc_poll = ug_udbg_getc_poll;
> +		udbg_printf("usbgecko_udbg: ready\n");
> +	}
> +
> +done:
> +	if (np)
> +		of_node_put(np);
> +	return;
> +}
> diff --git a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h b/ 
> arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
> new file mode 100644
> index 0000000..3929de3
> --- /dev/null
> +++ b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
> @@ -0,0 +1,30 @@
> +/*
> + * arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
> + *
> + * udbg serial input/output routines for the USB Gecko adapter.
> + * Copyright (C) 2008-2009 The GameCube Linux Team
> + * Copyright (C) 2008,2009 Albert Herranz
> + *
> + * 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 __USBGECKO_UDBG_H
> +#define __USBGECKO_UDBG_H
> +
> +#ifdef CONFIG_USBGECKO_UDBG
> +
> +extern void __init ug_udbg_init(void);
> +
> +#else
> +
> +static inline void __init ug_udbg_init(void)
> +{
> +}
> +
> +#endif /* CONFIG_USBGECKO_UDBG */
> +
> +#endif /* __USBGECKO_UDBG_H */
> -- 
> 1.6.3.3
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev

[RFC PATCH v2 08/11] powerpc: gamecube/wii: early debugging using usbgecko

[Albert Herranz]

Add support for using the USB Gecko adapter as an early debugging
console on the Nintendo GameCube and Wii video game consoles.
The USB Gecko is a 3rd party memory card interface adapter that provides
a EXI (External Interface) to USB serial converter.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
v1 -> v2
- Do not enclose declaration within #ifdef's. Suggestion by Arnd Bergmann.
- Document apparent double setting of BATs.
- Isolate hardcoded settings into functions.
- Prevent compilation if not targeted for the GameCube or Wii.

 arch/powerpc/Kconfig.debug                         |    8 +++
 arch/powerpc/include/asm/udbg.h                    |    1 +
 arch/powerpc/kernel/head_32.S                      |   21 ++++++++
 arch/powerpc/kernel/udbg.c                         |    2 +
 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c |   53 ++++++++++++++++++++
 arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h |    2 +
 6 files changed, 87 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 3b10051..11e385b 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -254,6 +254,14 @@ config PPC_EARLY_DEBUG_CPM
 	  using a CPM-based serial port.  This assumes that the bootwrapper
 	  has run, and set up the CPM in a particular way.
 
+config PPC_EARLY_DEBUG_USBGECKO
+	bool "Early debugging through the USB Gecko adapter"
+	depends on GAMECUBE_COMMON
+	select USBGECKO_UDBG
+	help
+	  Select this to enable early debugging for Nintendo GameCube/Wii
+	  consoles via an external USB Gecko adapter.
+
 endchoice
 
 config PPC_EARLY_DEBUG_44x_PHYSLOW
diff --git a/arch/powerpc/include/asm/udbg.h b/arch/powerpc/include/asm/udbg.h
index cd21e5e..11ae699 100644
--- a/arch/powerpc/include/asm/udbg.h
+++ b/arch/powerpc/include/asm/udbg.h
@@ -51,6 +51,7 @@ 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);
+extern void __init udbg_init_usbgecko(void);
 
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_UDBG_H */
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 829c3fe..c3f3737 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -164,6 +164,9 @@ __after_mmu_off:
 #ifdef CONFIG_PPC_EARLY_DEBUG_CPM
 	bl	setup_cpm_bat
 #endif
+#ifdef CONFIG_PPC_EARLY_DEBUG_USBGECKO
+	bl	setup_usbgecko_bat
+#endif
 
 /*
  * Call setup_cpu for CPU 0 and initialize 6xx Idle
@@ -1203,6 +1206,24 @@ setup_cpm_bat:
 	blr
 #endif
 
+#ifdef CONFIG_PPC_EARLY_DEBUG_USBGECKO
+setup_usbgecko_bat:
+	/* prepare a BAT for early io */
+#if defined(CONFIG_GAMECUBE)
+	lis	r8, 0x0c00
+#elif defined(CONFIG_WII)
+	lis	r8, 0x0d00
+#else
+#error Invalid platform for USB Gecko based early debugging.
+#endif
+	mr	r11, r8
+	ori	r8, r8, 0x002a	/* uncached, guarded ,rw */
+	ori	r11, r11, 0x3	/* 128K */
+	mtspr	SPRN_DBAT1L, r8
+	mtspr	SPRN_DBAT1U, r11
+	blr
+#endif
+
 #ifdef CONFIG_8260
 /* Jump into the system reset for the rom.
  * We first disable the MMU, and then jump to the ROM reset address.
diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c
index fc9af47..e39cad8 100644
--- a/arch/powerpc/kernel/udbg.c
+++ b/arch/powerpc/kernel/udbg.c
@@ -60,6 +60,8 @@ void __init udbg_early_init(void)
 	udbg_init_40x_realmode();
 #elif defined(CONFIG_PPC_EARLY_DEBUG_CPM)
 	udbg_init_cpm();
+#elif defined(CONFIG_PPC_EARLY_DEBUG_USBGECKO)
+	udbg_init_usbgecko();
 #endif
 
 #ifdef CONFIG_PPC_EARLY_DEBUG
diff --git a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
index 581ce61..f9d7991 100644
--- a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
+++ b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.c
@@ -270,3 +270,56 @@ done:
 		of_node_put(np);
 	return;
 }
+
+#ifdef CONFIG_PPC_EARLY_DEBUG_USBGECKO
+
+static void __iomem * __init udbg_early_grab_exi_io_base(void)
+{
+#if defined(CONFIG_GAMECUBE)
+	return (void __iomem *)0x0c006800;
+#elif defined(CONFIG_WII)
+	return (void __iomem *)0x0d006800;
+#else
+#error Invalid platform for USB Gecko based early debugging.
+#endif
+}
+
+/*
+ * USB Gecko early debug support initialization for udbg.
+ */
+void __init udbg_init_usbgecko(void)
+{
+	void __iomem *exi_io_base;
+	unsigned long addr;
+
+	/*
+	 * At this point we have a BAT already setup that enables I/O
+	 * to the EXI hardware.
+	 */
+
+	exi_io_base = udbg_early_grab_exi_io_base();
+	if (!exi_io_base)
+		return;
+
+	/* try to detect a USB Gecko */
+	if (!ug_udbg_probe(exi_io_base))
+		return;
+
+	/* we found a USB Gecko, load udbg hooks */
+	udbg_putc = ug_udbg_putc;
+	udbg_getc = ug_udbg_getc;
+	udbg_getc_poll = ug_udbg_getc_poll;
+
+	/*
+	 * Prepare again the same BAT for MMU_init.
+	 * This allows udbg I/O to continue working after the MMU is
+	 * turned on for real.
+	 *
+	 * We are assuming here that exi_io_base is identity mapped.
+	 */
+	addr = ((unsigned long)exi_io_base) & 0xffff0000;
+	setbat(1, addr, addr, 128*1024, PAGE_KERNEL_NCG);
+}
+
+#endif /* CONFIG_PPC_EARLY_DEBUG_USBGECKO */
+
diff --git a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
index 3929de3..bb6cde4 100644
--- a/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
+++ b/arch/powerpc/platforms/embedded6xx/usbgecko_udbg.h
@@ -27,4 +27,6 @@ static inline void __init ug_udbg_init(void)
 
 #endif /* CONFIG_USBGECKO_UDBG */
 
+void __init udbg_init_usbgecko(void);
+
 #endif /* __USBGECKO_UDBG_H */
-- 
1.6.3.3

Re: [RFC PATCH v2 08/11] powerpc: gamecube/wii: early debugging using usbgecko

[Benjamin Herrenschmidt]

On Sat, 2009-11-28 at 21:43 +0100, Albert Herranz wrote:
> +        * Prepare again the same BAT for MMU_init.
> +        * This allows udbg I/O to continue working after the MMU is
> +        * turned on for real.
> +        *
> +        * We are assuming here that exi_io_base is identity mapped.
> +        */
> +       addr = ((unsigned long)exi_io_base) & 0xffff0000;
> +       setbat(1, addr, addr, 128*1024, PAGE_KERNEL_NCG); 

How do you prevent that from overlapping otherwise valid kernel
mappings ?

You need to allocate the virtual space. For a debug thing like that, you
could use the fixmap. In fact, I think we should create a fixmap entry
or two always available for use by early debug.

Cheers,
Ben.

Re: [RFC PATCH v2 08/11] powerpc: gamecube/wii: early debugging using usbgecko

[Albert Herranz]

Benjamin Herrenschmidt wrote:
> On Sat, 2009-11-28 at 21:43 +0100, Albert Herranz wrote:
>> +        * Prepare again the same BAT for MMU_init.
>> +        * This allows udbg I/O to continue working after the MMU is
>> +        * turned on for real.
>> +        *
>> +        * We are assuming here that exi_io_base is identity mapped.
>> +        */
>> +       addr = ((unsigned long)exi_io_base) & 0xffff0000;
>> +       setbat(1, addr, addr, 128*1024, PAGE_KERNEL_NCG); 
> 
> How do you prevent that from overlapping otherwise valid kernel
> mappings ?
> 

ug_udbg_init() is called from ppc_md.init_early.
It doesn't overlap any valid kernel mappings because exi_io_base is hardcoded to an i/o region not used yet by the kernel.
See udbg_early_grab_exi_io_base().

The setbat just prepares again, exactly in the same way, the same BAT that we got setup by setup_usbgecko_bat in head_32.S.

_start
__start
> early_init
> mmu_off
# mmu off
> clear_bats
> flush_tlbs
> initial_bats
> setup_usbgecko_bat <--- BAT1 setup here
> call_setup_cpu
> init_idle_6xx
! relocate_kernel
! turn_on_mmu
# mmu on
! start_here
> machine_init
>> udbg_early_init
>>> udbg_init_usbgecko <--- BAT1 prepared again here for after MMU_init
>> early_init_devtree
> __save_cpu_setup
> MMU_init
# mmu off
> load_up_mmu
# mmu on
! start_kernel

> You need to allocate the virtual space. For a debug thing like that, you
> could use the fixmap. In fact, I think we should create a fixmap entry
> or two always available for use by early debug.
> 

Or give us back ppc_md.setup_io_mappings :)

> Cheers,
> Ben.
> 

Thanks,
Albert

Re: [RFC PATCH v2 08/11] powerpc: gamecube/wii: early debugging using usbgecko

[Benjamin Herrenschmidt]

On Mon, 2009-11-30 at 06:50 +0100, Albert Herranz wrote:
> Benjamin Herrenschmidt wrote:
> > On Sat, 2009-11-28 at 21:43 +0100, Albert Herranz wrote:
> >> +        * Prepare again the same BAT for MMU_init.
> >> +        * This allows udbg I/O to continue working after the MMU is
> >> +        * turned on for real.
> >> +        *
> >> +        * We are assuming here that exi_io_base is identity mapped.
> >> +        */
> >> +       addr = ((unsigned long)exi_io_base) & 0xffff0000;
> >> +       setbat(1, addr, addr, 128*1024, PAGE_KERNEL_NCG); 
> > 
> > How do you prevent that from overlapping otherwise valid kernel
> > mappings ?
> > 
> 
> ug_udbg_init() is called from ppc_md.init_early.
> It doesn't overlap any valid kernel mappings because exi_io_base is
> hardcoded to an i/o region not used yet by the kernel.

But that doesn't allocate virtual space does it ?

> See udbg_early_grab_exi_io_base().

Yeah, I see that:

+#if defined(CONFIG_GAMECUBE)
+       return (void __iomem *)0x0c006800;
+#elif defined(CONFIG_WII)
+       return (void __iomem *)0x0d006800;
+#else

So you'll have BATs floating over user addresses ? That sounds fishy :-)

It should be trivial to just create a fixmap entry instead. That will
give you a virtual address that is known at compile time (so you can
use it from head_32.S as well for setting up your BAT).

Actually you probably need more than one entry in there since it needs
to be big enough to cover a BAT min size and be aligned, but it's not
-that- hard to do (I think x86 does similar tricks in their fixmap
iirc) 

> The setbat just prepares again, exactly in the same way, the same BAT that we got
> setup by setup_usbgecko_bat in head_32.S.

 .../...

> > You need to allocate the virtual space. For a debug thing like that, you
> > could use the fixmap. In fact, I think we should create a fixmap entry
> > or two always available for use by early debug.
> > 
> 
> Or give us back ppc_md.setup_io_mappings :)

Not happening :-) Or if you get one, it will allocate virtual addresses
and so you cannot rely on an identity mapping.

Re: [RFC PATCH v2 08/11] powerpc: gamecube/wii: early debugging using usbgecko

[Albert Herranz]

Benjamin Herrenschmidt wrote:
> On Mon, 2009-11-30 at 06:50 +0100, Albert Herranz wrote:
>> Benjamin Herrenschmidt wrote:
>>> On Sat, 2009-11-28 at 21:43 +0100, Albert Herranz wrote:
>>>> +        * Prepare again the same BAT for MMU_init.
>>>> +        * This allows udbg I/O to continue working after the MMU is
>>>> +        * turned on for real.
>>>> +        *
>>>> +        * We are assuming here that exi_io_base is identity mapped.
>>>> +        */
>>>> +       addr = ((unsigned long)exi_io_base) & 0xffff0000;
>>>> +       setbat(1, addr, addr, 128*1024, PAGE_KERNEL_NCG); 
>>> How do you prevent that from overlapping otherwise valid kernel
>>> mappings ?
>>>
>> ug_udbg_init() is called from ppc_md.init_early.
>> It doesn't overlap any valid kernel mappings because exi_io_base is
>> hardcoded to an i/o region not used yet by the kernel.
> 
> But that doesn't allocate virtual space does it ?
> 

No.

>> See udbg_early_grab_exi_io_base().
> 
> Yeah, I see that:
> 
> +#if defined(CONFIG_GAMECUBE)
> +       return (void __iomem *)0x0c006800;
> +#elif defined(CONFIG_WII)
> +       return (void __iomem *)0x0d006800;
> +#else
> 
> So you'll have BATs floating over user addresses ? That sounds fishy :-)
> 

Heh, I was told to identity map it :)
Originally it used kernel address space (0xc{c,d}006800).

> It should be trivial to just create a fixmap entry instead. That will
> give you a virtual address that is known at compile time (so you can
> use it from head_32.S as well for setting up your BAT).
> 
> Actually you probably need more than one entry in there since it needs
> to be big enough to cover a BAT min size and be aligned, but it's not
> -that- hard to do (I think x86 does similar tricks in their fixmap
> iirc) 
> 

I've never worked with fixmap entries. I'll look into it. Thanks.

>> The setbat just prepares again, exactly in the same way, the same BAT that we got
>> setup by setup_usbgecko_bat in head_32.S.
> 
>  .../...
> 
>>> You need to allocate the virtual space. For a debug thing like that, you
>>> could use the fixmap. In fact, I think we should create a fixmap entry
>>> or two always available for use by early debug.
>>>
>> Or give us back ppc_md.setup_io_mappings :)
> 
> Not happening :-) Or if you get one, it will allocate virtual addresses
> and so you cannot rely on an identity mapping.
> 

But we can use then a known mapping scheme, and have all the i/o region covered by bats there.
We can do that already, yes, but setup_io_mappings purpose was originally that, no?

Thanks,
Albert

Re: [RFC PATCH v2 08/11] powerpc: gamecube/wii: early debugging using usbgecko

[Benjamin Herrenschmidt]

On Mon, 2009-11-30 at 07:28 +0100, Albert Herranz wrote:
> 
> 
> Heh, I was told to identity map it :)

Hah ? By whome ? :-)

> Originally it used kernel address space (
> 0xc{c,d}006800).

In any case, kernel space also needs to be reserved. There is no magic
free spot in the kernel virtual space unless you reserve some either by
lowering ioremap_bot early at boot or by using the fixmap (well, there
is if you don't enable HIGHMEM but that's going away soon :-)

> I've never worked with fixmap entries. I'll look into it. Thanks.

Look at fixmap.h, basically it's an emum of reserved pages starting near
the top of the address space and walking down from there. The kernel
ensure that space stays reserved and it gives you things calculated at
compile time (so via asm-offsets.h you can feed them into your asm).

I'm half tempted to say we should just bluntly reserve the top 128K (or
whatever is the min size of a BAT) for that sort of debug crap though
and be done with it :-) Always handy to have some space we know we can
mess around with.

> But we can use then a known mapping scheme, and have all the i/o
> region covered by bats there.

We could yes. I was hoping Grant would produce something there but he
hadn't had time yet.,

> We can do that already, yes, but setup_io_mappings purpose was
> originally that, no?

Sort-of. I don't like hard coding virtual addresses, it causes all sort
of problems (other than in the fixmap). It wouldn't be very hard to
bring back some variant of io_block_mapping() though that works by
moving ioremap_bot down early during boot, and allows you to setup some
IO BATs for perfs reasons. Subsequent ioremaps would automatically pick
up that space and benefit from it.

Cheers,
Ben.

Re: [RFC PATCH v2 08/11] powerpc: gamecube/wii: early debugging using usbgecko

[Albert Herranz]

Albert Herranz wrote:
> Benjamin Herrenschmidt wrote:
>> On Sat, 2009-11-28 at 21:43 +0100, Albert Herranz wrote:
>>> +        * Prepare again the same BAT for MMU_init.
>>> +        * This allows udbg I/O to continue working after the MMU is
>>> +        * turned on for real.
>>> +        *
>>> +        * We are assuming here that exi_io_base is identity mapped.
>>> +        */
>>> +       addr = ((unsigned long)exi_io_base) & 0xffff0000;
>>> +       setbat(1, addr, addr, 128*1024, PAGE_KERNEL_NCG); 
>> How do you prevent that from overlapping otherwise valid kernel
>> mappings ?
>>
> 
> ug_udbg_init() is called from ppc_md.init_early.

  ^^^
This got here, but although it's true it doesn't apply here :)

> It doesn't overlap any valid kernel mappings because exi_io_base is hardcoded to an i/o region not used yet by the kernel.
> See udbg_early_grab_exi_io_base().
> The setbat just prepares again, exactly in the same way, the same BAT that we got setup by setup_usbgecko_bat in head_32.S.
> 

Thanks,
Albert

[RFC PATCH v2 09/11] powerpc: gamecube/wii: flipper interrupt controller support

[Albert Herranz]

Add support for the interrupt controller included in the "Flipper"
chipset of the Nintendo GameCube video game console.
The same interrupt controller is also present in the "Hollywood" chipset
of the Nintendo Wii.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
v1 -> v2
- Build always Flipper interrupt controller when GAMECUBE_COMMON and
  get rid of FLIPPER_PIC option. Suggestion by Grant Likely.
- Use NO_IRQ instead of -1. Suggestion by Benjamin Herrenschmidt.
- Write 0xffffffff instead of ~0 to clear interrupts.
  Suggestion by Segher Boessenkool.
- Use __fls instead of open coded asm. Suggestion by Segher Boessenkool.
- Use a write instead of a read/modify/write to ack interrupts.
  Suggestion by Segher Boessenkool and Benjamin Herrenschmidt.
- Use name instead of typename for struct irq_chip.
- Adapt to updated device tree.

 arch/powerpc/platforms/embedded6xx/Makefile      |    1 +
 arch/powerpc/platforms/embedded6xx/flipper-pic.c |  263 ++++++++++++++++++++++
 arch/powerpc/platforms/embedded6xx/flipper-pic.h |   25 ++
 3 files changed, 289 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/platforms/embedded6xx/flipper-pic.c
 create mode 100644 arch/powerpc/platforms/embedded6xx/flipper-pic.h

diff --git a/arch/powerpc/platforms/embedded6xx/Makefile b/arch/powerpc/platforms/embedded6xx/Makefile
index 0ab7492..b80f47c 100644
--- a/arch/powerpc/platforms/embedded6xx/Makefile
+++ b/arch/powerpc/platforms/embedded6xx/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_PPC_HOLLY)		+= holly.o
 obj-$(CONFIG_PPC_PRPMC2800)	+= prpmc2800.o
 obj-$(CONFIG_PPC_C2K)		+= c2k.o
 obj-$(CONFIG_USBGECKO_UDBG)	+= usbgecko_udbg.o
+obj-$(CONFIG_GAMECUBE_COMMON)	+= flipper-pic.o
diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.c b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
new file mode 100644
index 0000000..d596328
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
@@ -0,0 +1,263 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/flipper-pic.c
+ *
+ * Nintendo GameCube/Wii "Flipper" interrupt controller support.
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * 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.
+ *
+ */
+#define DRV_MODULE_NAME "flipper-pic"
+#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/of.h>
+#include <asm/io.h>
+
+#include "flipper-pic.h"
+
+#define FLIPPER_NR_IRQS		32
+
+/*
+ * Each interrupt has a corresponding bit in both
+ * the Interrupt Cause (ICR) and Interrupt Mask (IMR) registers.
+ *
+ * Enabling/disabling an interrupt line involves setting/clearing
+ * the corresponding bit in IMR.
+ * Except for the RSW interrupt, all interrupts get deasserted automatically
+ * when the source deasserts the interrupt.
+ */
+#define FLIPPER_ICR		0x00
+#define FLIPPER_ICR_RSS		(1<<16) /* reset switch state */
+
+#define FLIPPER_IMR		0x04
+
+#define FLIPPER_RESET		0x24
+
+
+/*
+ * IRQ chip hooks.
+ *
+ */
+
+static void flipper_pic_mask_and_ack(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+	u32 mask = 1 << irq;
+
+	clrbits32(io_base + FLIPPER_IMR, mask);
+	/* this is at least needed for RSW */
+	out_be32(io_base + FLIPPER_ICR, mask);
+}
+
+static void flipper_pic_ack(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+
+	/* this is at least needed for RSW */
+	out_be32(io_base + FLIPPER_ICR, 1 << irq);
+}
+
+static void flipper_pic_mask(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+
+	clrbits32(io_base + FLIPPER_IMR, 1 << irq);
+}
+
+static void flipper_pic_unmask(unsigned int virq)
+{
+	int irq = virq_to_hw(virq);
+	void __iomem *io_base = get_irq_chip_data(virq);
+
+	setbits32(io_base + FLIPPER_IMR, 1 << irq);
+}
+
+
+static struct irq_chip flipper_pic = {
+	.name		= "flipper-pic",
+	.ack		= flipper_pic_ack,
+	.mask_ack	= flipper_pic_mask_and_ack,
+	.mask		= flipper_pic_mask,
+	.unmask		= flipper_pic_unmask,
+};
+
+/*
+ * IRQ host hooks.
+ *
+ */
+
+static struct irq_host *flipper_irq_host;
+
+static int flipper_pic_map(struct irq_host *h, unsigned int virq,
+			   irq_hw_number_t hwirq)
+{
+	set_irq_chip_data(virq, h->host_data);
+	get_irq_desc(virq)->status |= IRQ_LEVEL;
+	set_irq_chip_and_handler(virq, &flipper_pic, handle_level_irq);
+	return 0;
+}
+
+static void flipper_pic_unmap(struct irq_host *h, unsigned int irq)
+{
+	set_irq_chip_data(irq, NULL);
+	set_irq_chip(irq, NULL);
+}
+
+static int flipper_pic_match(struct irq_host *h, struct device_node *np)
+{
+	return 1;
+}
+
+
+static struct irq_host_ops flipper_irq_host_ops = {
+	.map = flipper_pic_map,
+	.unmap = flipper_pic_unmap,
+	.match = flipper_pic_match,
+};
+
+/*
+ * Platform hooks.
+ *
+ */
+
+static void __flipper_quiesce(void __iomem *io_base)
+{
+	/* mask and ack all IRQs */
+	out_be32(io_base + FLIPPER_IMR, 0x00000000);
+	out_be32(io_base + FLIPPER_ICR, 0xffffffff);
+}
+
+struct irq_host * __init flipper_pic_init(struct device_node *np)
+{
+	struct device_node *pi;
+	struct irq_host *irq_host = NULL;
+	struct resource res;
+	void __iomem *io_base;
+	int retval;
+
+	pi = of_get_parent(np);
+	if (!pi) {
+		pr_err("no parent found\n");
+		goto out;
+	}
+	if (!of_device_is_compatible(pi, "nintendo,flipper-pi")) {
+		pr_err("unexpected parent compatible\n");
+		goto out;
+	}
+
+	retval = of_address_to_resource(pi, 0, &res);
+	if (retval) {
+		pr_err("no io memory range found\n");
+		goto out;
+	}
+	io_base = ioremap(res.start, resource_size(&res));
+
+	pr_info("controller at 0x%08x mapped to 0x%p\n", res.start, io_base);
+
+	__flipper_quiesce(io_base);
+
+	irq_host = irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, FLIPPER_NR_IRQS,
+				  &flipper_irq_host_ops, -1);
+	if (!irq_host) {
+		pr_err("failed to allocate irq_host\n");
+		return NULL;
+	}
+
+	irq_host->host_data = io_base;
+
+out:
+	return irq_host;
+}
+
+unsigned int flipper_pic_get_irq(void)
+{
+	void __iomem *io_base = flipper_irq_host->host_data;
+	int irq;
+	u32 irq_status;
+
+	irq_status = in_be32(io_base + FLIPPER_ICR) &
+		     in_be32(io_base + FLIPPER_IMR);
+	if (irq_status == 0)
+		return NO_IRQ;	/* no more IRQs pending */
+
+	irq = __ffs(irq_status);
+	return irq_linear_revmap(flipper_irq_host, irq);
+}
+
+/*
+ * Probe function.
+ *
+ */
+
+void __init flipper_pic_probe(void)
+{
+	struct device_node *np;
+
+	np = of_find_compatible_node(NULL, NULL, "nintendo,flipper-pic");
+	BUG_ON(!np);
+
+	flipper_irq_host = flipper_pic_init(np);
+	BUG_ON(!flipper_irq_host);
+
+	irq_set_default_host(flipper_irq_host);
+
+	of_node_put(np);
+}
+
+/*
+ * Misc functions related to the flipper chipset.
+ *
+ */
+
+/**
+ * flipper_quiesce() - quiesce flipper irq controller
+ *
+ * Mask and ack all interrupt sources.
+ *
+ */
+void flipper_quiesce(void)
+{
+	void __iomem *io_base = flipper_irq_host->host_data;
+
+	__flipper_quiesce(io_base);
+}
+
+/*
+ * Resets the platform.
+ */
+void flipper_platform_reset(void)
+{
+	void __iomem *io_base;
+
+	if (flipper_irq_host && flipper_irq_host->host_data) {
+		io_base = flipper_irq_host->host_data;
+		out_8(io_base + FLIPPER_RESET, 0x00);
+	}
+}
+
+/*
+ * Returns non-zero if the reset button is pressed.
+ */
+int flipper_is_reset_button_pressed(void)
+{
+	void __iomem *io_base;
+	u32 icr;
+
+	if (flipper_irq_host && flipper_irq_host->host_data) {
+		io_base = flipper_irq_host->host_data;
+		icr = in_be32(io_base + FLIPPER_ICR);
+		return !(icr & FLIPPER_ICR_RSS);
+	}
+	return 0;
+}
+
diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.h b/arch/powerpc/platforms/embedded6xx/flipper-pic.h
new file mode 100644
index 0000000..e339186
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.h
@@ -0,0 +1,25 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/flipper-pic.h
+ *
+ * Nintendo GameCube/Wii "Flipper" interrupt controller support.
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * 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 __FLIPPER_PIC_H
+#define __FLIPPER_PIC_H
+
+unsigned int flipper_pic_get_irq(void);
+void __init flipper_pic_probe(void);
+
+void flipper_quiesce(void);
+void flipper_platform_reset(void);
+int flipper_is_reset_button_pressed(void);
+
+#endif
-- 
1.6.3.3

Re: [RFC PATCH v2 09/11] powerpc: gamecube/wii: flipper interrupt controller support

[Benjamin Herrenschmidt]

On Sat, 2009-11-28 at 21:43 +0100, Albert Herranz wrote:

> +static void flipper_pic_mask_and_ack(unsigned int virq)
> +{
> +	int irq = virq_to_hw(virq);
> +	void __iomem *io_base = get_irq_chip_data(virq);
> +	u32 mask = 1 << irq;
> +
> +	clrbits32(io_base + FLIPPER_IMR, mask);
> +	/* this is at least needed for RSW */
> +	out_be32(io_base + FLIPPER_ICR, mask);
> +}

That's a lot better. You probably still need to also read back to make
sure the line is properly de-asserted before you return... but if you
don't observe spurrious interrupts then it probably doesn't matter
much. 

No big deal either way though, change it if you want but I'm not going
to nack it if you don't :-)

You can also save cycles by avoiding the read/modify/write by storing a
memory cache of what the mask should be. MMIO reads tend to be slow.

Cheers,
Ben.

Re: [RFC PATCH v2 09/11] powerpc: gamecube/wii: flipper interrupt controller support

[Segher Boessenkool]

> Add support for the interrupt controller included in the "Flipper"
> chipset of the Nintendo GameCube video game console.
> The same interrupt controller is also present in the "Hollywood"  
> chipset
> of the Nintendo Wii.
>
> Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>

> ---
> v1 -> v2
> - Build always Flipper interrupt controller when GAMECUBE_COMMON and
>   get rid of FLIPPER_PIC option. Suggestion by Grant Likely.
> - Use NO_IRQ instead of -1. Suggestion by Benjamin Herrenschmidt.
> - Write 0xffffffff instead of ~0 to clear interrupts.
>   Suggestion by Segher Boessenkool.
> - Use __fls instead of open coded asm. Suggestion by Segher  
> Boessenkool.
> - Use a write instead of a read/modify/write to ack interrupts.
>   Suggestion by Segher Boessenkool and Benjamin Herrenschmidt.
> - Use name instead of typename for struct irq_chip.
> - Adapt to updated device tree.
>
>  arch/powerpc/platforms/embedded6xx/Makefile      |    1 +
>  arch/powerpc/platforms/embedded6xx/flipper-pic.c |  263 +++++++++++ 
> +++++++++++
>  arch/powerpc/platforms/embedded6xx/flipper-pic.h |   25 ++
>  3 files changed, 289 insertions(+), 0 deletions(-)
>  create mode 100644 arch/powerpc/platforms/embedded6xx/flipper-pic.c
>  create mode 100644 arch/powerpc/platforms/embedded6xx/flipper-pic.h
>
> diff --git a/arch/powerpc/platforms/embedded6xx/Makefile b/arch/ 
> powerpc/platforms/embedded6xx/Makefile
> index 0ab7492..b80f47c 100644
> --- a/arch/powerpc/platforms/embedded6xx/Makefile
> +++ b/arch/powerpc/platforms/embedded6xx/Makefile
> @@ -8,3 +8,4 @@ obj-$(CONFIG_PPC_HOLLY)		+= holly.o
>  obj-$(CONFIG_PPC_PRPMC2800)	+= prpmc2800.o
>  obj-$(CONFIG_PPC_C2K)		+= c2k.o
>  obj-$(CONFIG_USBGECKO_UDBG)	+= usbgecko_udbg.o
> +obj-$(CONFIG_GAMECUBE_COMMON)	+= flipper-pic.o
> diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.c b/ 
> arch/powerpc/platforms/embedded6xx/flipper-pic.c
> new file mode 100644
> index 0000000..d596328
> --- /dev/null
> +++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
> @@ -0,0 +1,263 @@
> +/*
> + * arch/powerpc/platforms/embedded6xx/flipper-pic.c
> + *
> + * Nintendo GameCube/Wii "Flipper" interrupt controller support.
> + * Copyright (C) 2004-2009 The GameCube Linux Team
> + * Copyright (C) 2007,2008,2009 Albert Herranz
> + *
> + * 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.
> + *
> + */
> +#define DRV_MODULE_NAME "flipper-pic"
> +#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
> +
> +#include <linux/kernel.h>
> +#include <linux/init.h>
> +#include <linux/irq.h>
> +#include <linux/of.h>
> +#include <asm/io.h>
> +
> +#include "flipper-pic.h"
> +
> +#define FLIPPER_NR_IRQS		32
> +
> +/*
> + * Each interrupt has a corresponding bit in both
> + * the Interrupt Cause (ICR) and Interrupt Mask (IMR) registers.
> + *
> + * Enabling/disabling an interrupt line involves setting/clearing
> + * the corresponding bit in IMR.
> + * Except for the RSW interrupt, all interrupts get deasserted  
> automatically
> + * when the source deasserts the interrupt.
> + */
> +#define FLIPPER_ICR		0x00
> +#define FLIPPER_ICR_RSS		(1<<16) /* reset switch state */
> +
> +#define FLIPPER_IMR		0x04
> +
> +#define FLIPPER_RESET		0x24
> +
> +
> +/*
> + * IRQ chip hooks.
> + *
> + */
> +
> +static void flipper_pic_mask_and_ack(unsigned int virq)
> +{
> +	int irq = virq_to_hw(virq);
> +	void __iomem *io_base = get_irq_chip_data(virq);
> +	u32 mask = 1 << irq;
> +
> +	clrbits32(io_base + FLIPPER_IMR, mask);
> +	/* this is at least needed for RSW */
> +	out_be32(io_base + FLIPPER_ICR, mask);
> +}
> +
> +static void flipper_pic_ack(unsigned int virq)
> +{
> +	int irq = virq_to_hw(virq);
> +	void __iomem *io_base = get_irq_chip_data(virq);
> +
> +	/* this is at least needed for RSW */
> +	out_be32(io_base + FLIPPER_ICR, 1 << irq);
> +}
> +
> +static void flipper_pic_mask(unsigned int virq)
> +{
> +	int irq = virq_to_hw(virq);
> +	void __iomem *io_base = get_irq_chip_data(virq);
> +
> +	clrbits32(io_base + FLIPPER_IMR, 1 << irq);
> +}
> +
> +static void flipper_pic_unmask(unsigned int virq)
> +{
> +	int irq = virq_to_hw(virq);
> +	void __iomem *io_base = get_irq_chip_data(virq);
> +
> +	setbits32(io_base + FLIPPER_IMR, 1 << irq);
> +}
> +
> +
> +static struct irq_chip flipper_pic = {
> +	.name		= "flipper-pic",
> +	.ack		= flipper_pic_ack,
> +	.mask_ack	= flipper_pic_mask_and_ack,
> +	.mask		= flipper_pic_mask,
> +	.unmask		= flipper_pic_unmask,
> +};
> +
> +/*
> + * IRQ host hooks.
> + *
> + */
> +
> +static struct irq_host *flipper_irq_host;
> +
> +static int flipper_pic_map(struct irq_host *h, unsigned int virq,
> +			   irq_hw_number_t hwirq)
> +{
> +	set_irq_chip_data(virq, h->host_data);
> +	get_irq_desc(virq)->status |= IRQ_LEVEL;
> +	set_irq_chip_and_handler(virq, &flipper_pic, handle_level_irq);
> +	return 0;
> +}
> +
> +static void flipper_pic_unmap(struct irq_host *h, unsigned int irq)
> +{
> +	set_irq_chip_data(irq, NULL);
> +	set_irq_chip(irq, NULL);
> +}
> +
> +static int flipper_pic_match(struct irq_host *h, struct  
> device_node *np)
> +{
> +	return 1;
> +}
> +
> +
> +static struct irq_host_ops flipper_irq_host_ops = {
> +	.map = flipper_pic_map,
> +	.unmap = flipper_pic_unmap,
> +	.match = flipper_pic_match,
> +};
> +
> +/*
> + * Platform hooks.
> + *
> + */
> +
> +static void __flipper_quiesce(void __iomem *io_base)
> +{
> +	/* mask and ack all IRQs */
> +	out_be32(io_base + FLIPPER_IMR, 0x00000000);
> +	out_be32(io_base + FLIPPER_ICR, 0xffffffff);
> +}
> +
> +struct irq_host * __init flipper_pic_init(struct device_node *np)
> +{
> +	struct device_node *pi;
> +	struct irq_host *irq_host = NULL;
> +	struct resource res;
> +	void __iomem *io_base;
> +	int retval;
> +
> +	pi = of_get_parent(np);
> +	if (!pi) {
> +		pr_err("no parent found\n");
> +		goto out;
> +	}
> +	if (!of_device_is_compatible(pi, "nintendo,flipper-pi")) {
> +		pr_err("unexpected parent compatible\n");
> +		goto out;
> +	}
> +
> +	retval = of_address_to_resource(pi, 0, &res);
> +	if (retval) {
> +		pr_err("no io memory range found\n");
> +		goto out;
> +	}
> +	io_base = ioremap(res.start, resource_size(&res));
> +
> +	pr_info("controller at 0x%08x mapped to 0x%p\n", res.start,  
> io_base);
> +
> +	__flipper_quiesce(io_base);
> +
> +	irq_host = irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, FLIPPER_NR_IRQS,
> +				  &flipper_irq_host_ops, -1);
> +	if (!irq_host) {
> +		pr_err("failed to allocate irq_host\n");
> +		return NULL;
> +	}
> +
> +	irq_host->host_data = io_base;
> +
> +out:
> +	return irq_host;
> +}
> +
> +unsigned int flipper_pic_get_irq(void)
> +{
> +	void __iomem *io_base = flipper_irq_host->host_data;
> +	int irq;
> +	u32 irq_status;
> +
> +	irq_status = in_be32(io_base + FLIPPER_ICR) &
> +		     in_be32(io_base + FLIPPER_IMR);
> +	if (irq_status == 0)
> +		return NO_IRQ;	/* no more IRQs pending */
> +
> +	irq = __ffs(irq_status);
> +	return irq_linear_revmap(flipper_irq_host, irq);
> +}
> +
> +/*
> + * Probe function.
> + *
> + */
> +
> +void __init flipper_pic_probe(void)
> +{
> +	struct device_node *np;
> +
> +	np = of_find_compatible_node(NULL, NULL, "nintendo,flipper-pic");
> +	BUG_ON(!np);
> +
> +	flipper_irq_host = flipper_pic_init(np);
> +	BUG_ON(!flipper_irq_host);
> +
> +	irq_set_default_host(flipper_irq_host);
> +
> +	of_node_put(np);
> +}
> +
> +/*
> + * Misc functions related to the flipper chipset.
> + *
> + */
> +
> +/**
> + * flipper_quiesce() - quiesce flipper irq controller
> + *
> + * Mask and ack all interrupt sources.
> + *
> + */
> +void flipper_quiesce(void)
> +{
> +	void __iomem *io_base = flipper_irq_host->host_data;
> +
> +	__flipper_quiesce(io_base);
> +}
> +
> +/*
> + * Resets the platform.
> + */
> +void flipper_platform_reset(void)
> +{
> +	void __iomem *io_base;
> +
> +	if (flipper_irq_host && flipper_irq_host->host_data) {
> +		io_base = flipper_irq_host->host_data;
> +		out_8(io_base + FLIPPER_RESET, 0x00);
> +	}
> +}
> +
> +/*
> + * Returns non-zero if the reset button is pressed.
> + */
> +int flipper_is_reset_button_pressed(void)
> +{
> +	void __iomem *io_base;
> +	u32 icr;
> +
> +	if (flipper_irq_host && flipper_irq_host->host_data) {
> +		io_base = flipper_irq_host->host_data;
> +		icr = in_be32(io_base + FLIPPER_ICR);
> +		return !(icr & FLIPPER_ICR_RSS);
> +	}
> +	return 0;
> +}
> +
> diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.h b/ 
> arch/powerpc/platforms/embedded6xx/flipper-pic.h
> new file mode 100644
> index 0000000..e339186
> --- /dev/null
> +++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.h
> @@ -0,0 +1,25 @@
> +/*
> + * arch/powerpc/platforms/embedded6xx/flipper-pic.h
> + *
> + * Nintendo GameCube/Wii "Flipper" interrupt controller support.
> + * Copyright (C) 2004-2009 The GameCube Linux Team
> + * Copyright (C) 2007,2008,2009 Albert Herranz
> + *
> + * 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 __FLIPPER_PIC_H
> +#define __FLIPPER_PIC_H
> +
> +unsigned int flipper_pic_get_irq(void);
> +void __init flipper_pic_probe(void);
> +
> +void flipper_quiesce(void);
> +void flipper_platform_reset(void);
> +int flipper_is_reset_button_pressed(void);
> +
> +#endif
> -- 
> 1.6.3.3
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev

Re: [RFC PATCH v2 09/11] powerpc: gamecube/wii: flipper interrupt controller support

[Albert Herranz]

Segher Boessenkool wrote:
>> Add support for the interrupt controller included in the "Flipper"
>> chipset of the Nintendo GameCube video game console.
>> The same interrupt controller is also present in the "Hollywood" chipset
>> of the Nintendo Wii.
>>
>> Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
> Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
> 
>> ---
>> v1 -> v2
>> - Build always Flipper interrupt controller when GAMECUBE_COMMON and
>>   get rid of FLIPPER_PIC option. Suggestion by Grant Likely.
>> - Use NO_IRQ instead of -1. Suggestion by Benjamin Herrenschmidt.
>> - Write 0xffffffff instead of ~0 to clear interrupts.
>>   Suggestion by Segher Boessenkool.
>> - Use __fls instead of open coded asm. Suggestion by Segher Boessenkool.
>> - Use a write instead of a read/modify/write to ack interrupts.
>>   Suggestion by Segher Boessenkool and Benjamin Herrenschmidt.
>> - Use name instead of typename for struct irq_chip.
>> - Adapt to updated device tree.
>>
>>  arch/powerpc/platforms/embedded6xx/Makefile      |    1 +
>>  arch/powerpc/platforms/embedded6xx/flipper-pic.c |  263
>> ++++++++++++++++++++++
>>  arch/powerpc/platforms/embedded6xx/flipper-pic.h |   25 ++
>>  3 files changed, 289 insertions(+), 0 deletions(-)
>>  create mode 100644 arch/powerpc/platforms/embedded6xx/flipper-pic.c
>>  create mode 100644 arch/powerpc/platforms/embedded6xx/flipper-pic.h
>>
>> diff --git a/arch/powerpc/platforms/embedded6xx/Makefile
>> b/arch/powerpc/platforms/embedded6xx/Makefile
>> index 0ab7492..b80f47c 100644
>> --- a/arch/powerpc/platforms/embedded6xx/Makefile
>> +++ b/arch/powerpc/platforms/embedded6xx/Makefile
>> @@ -8,3 +8,4 @@ obj-$(CONFIG_PPC_HOLLY)        += holly.o
>>  obj-$(CONFIG_PPC_PRPMC2800)    += prpmc2800.o
>>  obj-$(CONFIG_PPC_C2K)        += c2k.o
>>  obj-$(CONFIG_USBGECKO_UDBG)    += usbgecko_udbg.o
>> +obj-$(CONFIG_GAMECUBE_COMMON)    += flipper-pic.o
>> diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.c
>> b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
>> new file mode 100644
>> index 0000000..d596328
>> --- /dev/null
>> +++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.c
>> @@ -0,0 +1,263 @@
>> +/*
>> + * arch/powerpc/platforms/embedded6xx/flipper-pic.c
>> + *
>> + * Nintendo GameCube/Wii "Flipper" interrupt controller support.
>> + * Copyright (C) 2004-2009 The GameCube Linux Team
>> + * Copyright (C) 2007,2008,2009 Albert Herranz
>> + *
>> + * 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.
>> + *
>> + */
>> +#define DRV_MODULE_NAME "flipper-pic"
>> +#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt
>> +
>> +#include <linux/kernel.h>
>> +#include <linux/init.h>
>> +#include <linux/irq.h>
>> +#include <linux/of.h>
>> +#include <asm/io.h>
>> +
>> +#include "flipper-pic.h"
>> +
>> +#define FLIPPER_NR_IRQS        32
>> +
>> +/*
>> + * Each interrupt has a corresponding bit in both
>> + * the Interrupt Cause (ICR) and Interrupt Mask (IMR) registers.
>> + *
>> + * Enabling/disabling an interrupt line involves setting/clearing
>> + * the corresponding bit in IMR.
>> + * Except for the RSW interrupt, all interrupts get deasserted
>> automatically
>> + * when the source deasserts the interrupt.
>> + */
>> +#define FLIPPER_ICR        0x00
>> +#define FLIPPER_ICR_RSS        (1<<16) /* reset switch state */
>> +
>> +#define FLIPPER_IMR        0x04
>> +
>> +#define FLIPPER_RESET        0x24
>> +
>> +
>> +/*
>> + * IRQ chip hooks.
>> + *
>> + */
>> +
>> +static void flipper_pic_mask_and_ack(unsigned int virq)
>> +{
>> +    int irq = virq_to_hw(virq);
>> +    void __iomem *io_base = get_irq_chip_data(virq);
>> +    u32 mask = 1 << irq;
>> +
>> +    clrbits32(io_base + FLIPPER_IMR, mask);
>> +    /* this is at least needed for RSW */
>> +    out_be32(io_base + FLIPPER_ICR, mask);
>> +}
>> +
>> +static void flipper_pic_ack(unsigned int virq)
>> +{
>> +    int irq = virq_to_hw(virq);
>> +    void __iomem *io_base = get_irq_chip_data(virq);
>> +
>> +    /* this is at least needed for RSW */
>> +    out_be32(io_base + FLIPPER_ICR, 1 << irq);
>> +}
>> +
>> +static void flipper_pic_mask(unsigned int virq)
>> +{
>> +    int irq = virq_to_hw(virq);
>> +    void __iomem *io_base = get_irq_chip_data(virq);
>> +
>> +    clrbits32(io_base + FLIPPER_IMR, 1 << irq);
>> +}
>> +
>> +static void flipper_pic_unmask(unsigned int virq)
>> +{
>> +    int irq = virq_to_hw(virq);
>> +    void __iomem *io_base = get_irq_chip_data(virq);
>> +
>> +    setbits32(io_base + FLIPPER_IMR, 1 << irq);
>> +}
>> +
>> +
>> +static struct irq_chip flipper_pic = {
>> +    .name        = "flipper-pic",
>> +    .ack        = flipper_pic_ack,
>> +    .mask_ack    = flipper_pic_mask_and_ack,
>> +    .mask        = flipper_pic_mask,
>> +    .unmask        = flipper_pic_unmask,
>> +};
>> +
>> +/*
>> + * IRQ host hooks.
>> + *
>> + */
>> +
>> +static struct irq_host *flipper_irq_host;
>> +
>> +static int flipper_pic_map(struct irq_host *h, unsigned int virq,
>> +               irq_hw_number_t hwirq)
>> +{
>> +    set_irq_chip_data(virq, h->host_data);
>> +    get_irq_desc(virq)->status |= IRQ_LEVEL;
>> +    set_irq_chip_and_handler(virq, &flipper_pic, handle_level_irq);
>> +    return 0;
>> +}
>> +
>> +static void flipper_pic_unmap(struct irq_host *h, unsigned int irq)
>> +{
>> +    set_irq_chip_data(irq, NULL);
>> +    set_irq_chip(irq, NULL);
>> +}
>> +
>> +static int flipper_pic_match(struct irq_host *h, struct device_node *np)
>> +{
>> +    return 1;
>> +}
>> +
>> +
>> +static struct irq_host_ops flipper_irq_host_ops = {
>> +    .map = flipper_pic_map,
>> +    .unmap = flipper_pic_unmap,
>> +    .match = flipper_pic_match,
>> +};
>> +
>> +/*
>> + * Platform hooks.
>> + *
>> + */
>> +
>> +static void __flipper_quiesce(void __iomem *io_base)
>> +{
>> +    /* mask and ack all IRQs */
>> +    out_be32(io_base + FLIPPER_IMR, 0x00000000);
>> +    out_be32(io_base + FLIPPER_ICR, 0xffffffff);
>> +}
>> +
>> +struct irq_host * __init flipper_pic_init(struct device_node *np)
>> +{
>> +    struct device_node *pi;
>> +    struct irq_host *irq_host = NULL;
>> +    struct resource res;
>> +    void __iomem *io_base;
>> +    int retval;
>> +
>> +    pi = of_get_parent(np);
>> +    if (!pi) {
>> +        pr_err("no parent found\n");
>> +        goto out;
>> +    }
>> +    if (!of_device_is_compatible(pi, "nintendo,flipper-pi")) {
>> +        pr_err("unexpected parent compatible\n");
>> +        goto out;
>> +    }
>> +
>> +    retval = of_address_to_resource(pi, 0, &res);
>> +    if (retval) {
>> +        pr_err("no io memory range found\n");
>> +        goto out;
>> +    }
>> +    io_base = ioremap(res.start, resource_size(&res));
>> +
>> +    pr_info("controller at 0x%08x mapped to 0x%p\n", res.start,
>> io_base);
>> +
>> +    __flipper_quiesce(io_base);
>> +
>> +    irq_host = irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, FLIPPER_NR_IRQS,
>> +                  &flipper_irq_host_ops, -1);

This -1 should be NO_IRQ too.
I'll fix this in the next version.

>> +    if (!irq_host) {
>> +        pr_err("failed to allocate irq_host\n");
>> +        return NULL;
>> +    }
>> +
>> +    irq_host->host_data = io_base;
>> +
>> +out:
>> +    return irq_host;
>> +}
>> +
>> +unsigned int flipper_pic_get_irq(void)
>> +{
>> +    void __iomem *io_base = flipper_irq_host->host_data;
>> +    int irq;
>> +    u32 irq_status;
>> +
>> +    irq_status = in_be32(io_base + FLIPPER_ICR) &
>> +             in_be32(io_base + FLIPPER_IMR);
>> +    if (irq_status == 0)
>> +        return NO_IRQ;    /* no more IRQs pending */
>> +
>> +    irq = __ffs(irq_status);
>> +    return irq_linear_revmap(flipper_irq_host, irq);
>> +}
>> +
>> +/*
>> + * Probe function.
>> + *
>> + */
>> +
>> +void __init flipper_pic_probe(void)
>> +{
>> +    struct device_node *np;
>> +
>> +    np = of_find_compatible_node(NULL, NULL, "nintendo,flipper-pic");
>> +    BUG_ON(!np);
>> +
>> +    flipper_irq_host = flipper_pic_init(np);
>> +    BUG_ON(!flipper_irq_host);
>> +
>> +    irq_set_default_host(flipper_irq_host);
>> +
>> +    of_node_put(np);
>> +}
>> +
>> +/*
>> + * Misc functions related to the flipper chipset.
>> + *
>> + */
>> +
>> +/**
>> + * flipper_quiesce() - quiesce flipper irq controller
>> + *
>> + * Mask and ack all interrupt sources.
>> + *
>> + */
>> +void flipper_quiesce(void)
>> +{
>> +    void __iomem *io_base = flipper_irq_host->host_data;
>> +
>> +    __flipper_quiesce(io_base);
>> +}
>> +
>> +/*
>> + * Resets the platform.
>> + */
>> +void flipper_platform_reset(void)
>> +{
>> +    void __iomem *io_base;
>> +
>> +    if (flipper_irq_host && flipper_irq_host->host_data) {
>> +        io_base = flipper_irq_host->host_data;
>> +        out_8(io_base + FLIPPER_RESET, 0x00);
>> +    }
>> +}
>> +
>> +/*
>> + * Returns non-zero if the reset button is pressed.
>> + */
>> +int flipper_is_reset_button_pressed(void)
>> +{
>> +    void __iomem *io_base;
>> +    u32 icr;
>> +
>> +    if (flipper_irq_host && flipper_irq_host->host_data) {
>> +        io_base = flipper_irq_host->host_data;
>> +        icr = in_be32(io_base + FLIPPER_ICR);
>> +        return !(icr & FLIPPER_ICR_RSS);
>> +    }
>> +    return 0;
>> +}
>> +
>> diff --git a/arch/powerpc/platforms/embedded6xx/flipper-pic.h
>> b/arch/powerpc/platforms/embedded6xx/flipper-pic.h
>> new file mode 100644
>> index 0000000..e339186
>> --- /dev/null
>> +++ b/arch/powerpc/platforms/embedded6xx/flipper-pic.h
>> @@ -0,0 +1,25 @@
>> +/*
>> + * arch/powerpc/platforms/embedded6xx/flipper-pic.h
>> + *
>> + * Nintendo GameCube/Wii "Flipper" interrupt controller support.
>> + * Copyright (C) 2004-2009 The GameCube Linux Team
>> + * Copyright (C) 2007,2008,2009 Albert Herranz
>> + *
>> + * 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 __FLIPPER_PIC_H
>> +#define __FLIPPER_PIC_H
>> +
>> +unsigned int flipper_pic_get_irq(void);
>> +void __init flipper_pic_probe(void);
>> +
>> +void flipper_quiesce(void);
>> +void flipper_platform_reset(void);
>> +int flipper_is_reset_button_pressed(void);
>> +
>> +#endif

Cheers,
Albert

Re: [RFC PATCH v2 09/11] powerpc: gamecube/wii: flipper interrupt controller support

[Benjamin Herrenschmidt]

On Tue, 2009-12-01 at 20:48 +0100, Albert Herranz wrote:
> 
> This -1 should be NO_IRQ too.
> I'll fix this in the next version.

No. The number you pass here is not a linux virq number, but a number in
your HW numbering space that never represents a valid IRQ. In your case
0 (NO_IRQ is deprecated anyways) is a valid HW interrupt number. However
-1 sounds good.

So your existing code is fine.

Cheers,
Ben.

Re: [RFC PATCH v2 09/11] powerpc: gamecube/wii: flipper interrupt controller support

[Albert Herranz]

Benjamin Herrenschmidt wrote:
> On Tue, 2009-12-01 at 20:48 +0100, Albert Herranz wrote:
>> This -1 should be NO_IRQ too.
>> I'll fix this in the next version.
> 
> No. The number you pass here is not a linux virq number, but a number in
> your HW numbering space that never represents a valid IRQ. In your case
> 0 (NO_IRQ is deprecated anyways) is a valid HW interrupt number. However
> -1 sounds good.
> 
> So your existing code is fine.
> 

Oh. Good to know.
Then I need to fix the other PIC driver :)

> Cheers,
> Ben.
> 

Thanks,
Albert

[RFC PATCH v2 10/11] powerpc: gamecube: platform support

[Albert Herranz]

Add platform support for the Nintendo GameCube video game console.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
v1 -> v2
- Get rid of show_cpuinfo hooks. Suggestion by Grant Likely.
- Drop unneeded (at this stage) empty functions. Suggestion by Grant Likely.
- Merge gamecube.c and gamecube_dev.c into a single file.
  Suggestion by Grant Likely.
- Add gamecube_spin().

 arch/powerpc/platforms/embedded6xx/Kconfig    |    8 ++
 arch/powerpc/platforms/embedded6xx/Makefile   |    1 +
 arch/powerpc/platforms/embedded6xx/gamecube.c |  118 +++++++++++++++++++++++++
 3 files changed, 127 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/platforms/embedded6xx/gamecube.c

diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index 464e414..e318ced 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -107,3 +107,11 @@ config USBGECKO_UDBG
 
 	  If in doubt, say N here.
 
+config GAMECUBE
+	bool "Nintendo-GameCube"
+	depends on EMBEDDED6xx
+	select GAMECUBE_COMMON
+	help
+	  Select GAMECUBE if configuring for the Nintendo GameCube.
+	  More information at: <http://gc-linux.sourceforge.net/>
+
diff --git a/arch/powerpc/platforms/embedded6xx/Makefile b/arch/powerpc/platforms/embedded6xx/Makefile
index b80f47c..9365edd 100644
--- a/arch/powerpc/platforms/embedded6xx/Makefile
+++ b/arch/powerpc/platforms/embedded6xx/Makefile
@@ -9,3 +9,4 @@ obj-$(CONFIG_PPC_PRPMC2800)	+= prpmc2800.o
 obj-$(CONFIG_PPC_C2K)		+= c2k.o
 obj-$(CONFIG_USBGECKO_UDBG)	+= usbgecko_udbg.o
 obj-$(CONFIG_GAMECUBE_COMMON)	+= flipper-pic.o
+obj-$(CONFIG_GAMECUBE)		+= gamecube.o
diff --git a/arch/powerpc/platforms/embedded6xx/gamecube.c b/arch/powerpc/platforms/embedded6xx/gamecube.c
new file mode 100644
index 0000000..1106fd9
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/gamecube.c
@@ -0,0 +1,118 @@
+/*
+ * arch/powerpc/platforms/embedded6xx/gamecube.c
+ *
+ * Nintendo GameCube board-specific support
+ * Copyright (C) 2004-2009 The GameCube Linux Team
+ * Copyright (C) 2007,2008,2009 Albert Herranz
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/kexec.h>
+#include <linux/seq_file.h>
+#include <linux/of_platform.h>
+
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/udbg.h>
+
+#include "flipper-pic.h"
+#include "usbgecko_udbg.h"
+
+
+static void gamecube_spin(void)
+{
+	/* spin until power button pressed */
+	for (;;)
+		cpu_relax();
+}
+
+static void gamecube_restart(char *cmd)
+{
+	local_irq_disable();
+	flipper_platform_reset();
+	gamecube_spin();
+}
+
+static void gamecube_power_off(void)
+{
+	local_irq_disable();
+	gamecube_spin();
+}
+
+static void gamecube_halt(void)
+{
+	gamecube_restart(NULL);
+}
+
+static void __init gamecube_init_early(void)
+{
+	ug_udbg_init();
+}
+
+static int __init gamecube_probe(void)
+{
+	unsigned long dt_root;
+
+	dt_root = of_get_flat_dt_root();
+	if (!of_flat_dt_is_compatible(dt_root, "nintendo,gamecube"))
+		return 0;
+
+	return 1;
+}
+
+static void gamecube_shutdown(void)
+{
+	flipper_quiesce();
+}
+
+#ifdef CONFIG_KEXEC
+static int gamecube_kexec_prepare(struct kimage *image)
+{
+	return 0;
+}
+#endif /* CONFIG_KEXEC */
+
+
+define_machine(gamecube) {
+	.name			= "gamecube",
+	.probe			= gamecube_probe,
+	.init_early		= gamecube_init_early,
+	.restart		= gamecube_restart,
+	.power_off		= gamecube_power_off,
+	.halt			= gamecube_halt,
+	.init_IRQ		= flipper_pic_probe,
+	.get_irq		= flipper_pic_get_irq,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+	.machine_shutdown	= gamecube_shutdown,
+#ifdef CONFIG_KEXEC
+	.machine_kexec_prepare	= gamecube_kexec_prepare,
+#endif
+};
+
+
+static struct of_device_id gamecube_of_bus[] = {
+	{ .compatible = "nintendo,flipper", },
+	{ },
+};
+
+static int __init gamecube_device_probe(void)
+{
+	if (!machine_is(gamecube))
+		return 0;
+
+	of_platform_bus_probe(NULL, gamecube_of_bus, NULL);
+	return 0;
+}
+device_initcall(gamecube_device_probe);
+
-- 
1.6.3.3

[RFC PATCH v2 11/11] powerpc: gamecube: default config

[Albert Herranz]

Add a default configuration for the Nintendo GameCube video game console.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
 arch/powerpc/configs/gamecube_defconfig | 1061 +++++++++++++++++++++++++++++++
 1 files changed, 1061 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/configs/gamecube_defconfig

diff --git a/arch/powerpc/configs/gamecube_defconfig b/arch/powerpc/configs/gamecube_defconfig
new file mode 100644
index 0000000..942e119
--- /dev/null
+++ b/arch/powerpc/configs/gamecube_defconfig
@@ -0,0 +1,1061 @@
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.32-rc8
+# Sun Nov 22 21:07:30 2009
+#
+# CONFIG_PPC64 is not set
+
+#
+# Processor support
+#
+CONFIG_PPC_BOOK3S_32=y
+# CONFIG_PPC_85xx is not set
+# CONFIG_PPC_8xx is not set
+# CONFIG_40x is not set
+# CONFIG_44x is not set
+# CONFIG_E200 is not set
+CONFIG_PPC_BOOK3S=y
+CONFIG_6xx=y
+CONFIG_PPC_FPU=y
+# CONFIG_ALTIVEC is not set
+CONFIG_PPC_STD_MMU=y
+CONFIG_PPC_STD_MMU_32=y
+# CONFIG_PPC_MM_SLICES is not set
+CONFIG_PPC_HAVE_PMU_SUPPORT=y
+CONFIG_PPC_PERF_CTRS=y
+# CONFIG_SMP is not set
+CONFIG_NOT_COHERENT_CACHE=y
+CONFIG_PPC32=y
+CONFIG_WORD_SIZE=32
+# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
+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_GENERIC_HARDIRQS_NO__DO_IRQ=y
+# CONFIG_HAVE_SETUP_PER_CPU_AREA is not set
+# CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK is not set
+CONFIG_IRQ_PER_CPU=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_ARCH_HAS_ILOG2_U32=y
+CONFIG_GENERIC_HWEIGHT=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_OMIT_FRAME_POINTER=y
+CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_PPC_OF=y
+CONFIG_OF=y
+# CONFIG_PPC_UDBG_16550 is not set
+# CONFIG_GENERIC_TBSYNC is not set
+CONFIG_AUDIT_ARCH=y
+CONFIG_GENERIC_BUG=y
+CONFIG_DTC=y
+# CONFIG_DEFAULT_UIMAGE is not set
+# CONFIG_PPC_DCR_NATIVE is not set
+# CONFIG_PPC_DCR_MMIO is not set
+CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+CONFIG_CONSTRUCTORS=y
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_LOCK_KERNEL=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION="-gcn"
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+# CONFIG_POSIX_MQUEUE is not set
+# CONFIG_BSD_PROCESS_ACCT is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_AUDIT is not set
+
+#
+# RCU Subsystem
+#
+CONFIG_TREE_RCU=y
+# CONFIG_TREE_PREEMPT_RCU is not set
+# CONFIG_RCU_TRACE is not set
+CONFIG_RCU_FANOUT=32
+# CONFIG_RCU_FANOUT_EXACT is not set
+# CONFIG_TREE_RCU_TRACE is not set
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT=14
+CONFIG_GROUP_SCHED=y
+CONFIG_FAIR_GROUP_SCHED=y
+# CONFIG_RT_GROUP_SCHED is not set
+CONFIG_USER_SCHED=y
+# CONFIG_CGROUP_SCHED is not set
+# CONFIG_CGROUPS is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+# CONFIG_RELAY is not set
+# CONFIG_NAMESPACES is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_RD_GZIP=y
+# CONFIG_RD_BZIP2 is not set
+# CONFIG_RD_LZMA is not set
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_ANON_INODES=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+# CONFIG_KALLSYMS_EXTRA_PASS is not set
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+# CONFIG_ELF_CORE is not set
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_AIO=y
+CONFIG_HAVE_PERF_EVENTS=y
+
+#
+# Kernel Performance Events And Counters
+#
+CONFIG_PERF_EVENTS=y
+CONFIG_EVENT_PROFILE=y
+CONFIG_PERF_COUNTERS=y
+# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
+# CONFIG_VM_EVENT_COUNTERS is not set
+CONFIG_COMPAT_BRK=y
+CONFIG_SLAB=y
+# CONFIG_SLUB is not set
+# CONFIG_SLOB is not set
+# CONFIG_PROFILING is not set
+CONFIG_TRACEPOINTS=y
+CONFIG_HAVE_OPROFILE=y
+# CONFIG_KPROBES is not set
+CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
+CONFIG_HAVE_IOREMAP_PROT=y
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KRETPROBES=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_DMA_ATTRS=y
+CONFIG_HAVE_DMA_API_DEBUG=y
+
+#
+# GCOV-based kernel profiling
+#
+# CONFIG_GCOV_KERNEL is not set
+CONFIG_SLOW_WORK=y
+# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_BLOCK=y
+CONFIG_LBDAF=y
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_INTEGRITY 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"
+# CONFIG_FREEZER is not set
+
+#
+# Platform support
+#
+# CONFIG_PPC_CHRP is not set
+# CONFIG_MPC5121_ADS is not set
+# CONFIG_MPC5121_GENERIC is not set
+# CONFIG_PPC_MPC52xx is not set
+# CONFIG_PPC_PMAC is not set
+# CONFIG_PPC_CELL is not set
+# CONFIG_PPC_CELL_NATIVE is not set
+# CONFIG_PPC_82xx is not set
+# CONFIG_PQ2ADS is not set
+# CONFIG_PPC_83xx is not set
+# CONFIG_PPC_86xx is not set
+CONFIG_EMBEDDED6xx=y
+# CONFIG_LINKSTATION is not set
+# CONFIG_STORCENTER is not set
+# CONFIG_MPC7448HPC2 is not set
+# CONFIG_PPC_HOLLY is not set
+# CONFIG_PPC_PRPMC2800 is not set
+# CONFIG_PPC_C2K is not set
+CONFIG_GAMECUBE_COMMON=y
+CONFIG_USBGECKO_UDBG=y
+CONFIG_FLIPPER_PIC=y
+CONFIG_GAMECUBE=y
+# CONFIG_WII is not set
+# CONFIG_AMIGAONE is not set
+# CONFIG_PPC_OF_BOOT_TRAMPOLINE is not set
+# CONFIG_IPIC is not set
+# 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_TAU is not set
+# CONFIG_FSL_ULI1575 is not set
+# CONFIG_SIMPLE_GPIO is not set
+
+#
+# Kernel options
+#
+# CONFIG_HIGHMEM 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_SCHED_HRTICK is not set
+# CONFIG_PREEMPT_NONE is not set
+# CONFIG_PREEMPT_VOLUNTARY is not set
+CONFIG_PREEMPT=y
+CONFIG_BINFMT_ELF=y
+# CONFIG_HAVE_AOUT is not set
+CONFIG_BINFMT_MISC=m
+# CONFIG_IOMMU_HELPER is not set
+# CONFIG_SWIOTLB is not set
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+CONFIG_ARCH_HAS_WALK_MEMORY=y
+CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
+CONFIG_KEXEC=y
+# CONFIG_CRASH_DUMP is not set
+CONFIG_MAX_ACTIVE_REGIONS=32
+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_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_MIGRATION is not set
+# CONFIG_PHYS_ADDR_T_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=1
+CONFIG_BOUNCE=y
+CONFIG_VIRT_TO_BUS=y
+CONFIG_HAVE_MLOCK=y
+CONFIG_HAVE_MLOCKED_PAGE_BIT=y
+# CONFIG_KSM is not set
+CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
+CONFIG_PPC_4K_PAGES=y
+# CONFIG_PPC_16K_PAGES is not set
+# CONFIG_PPC_64K_PAGES is not set
+# CONFIG_PPC_256K_PAGES is not set
+CONFIG_FORCE_MAX_ZONEORDER=11
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_CMDLINE_BOOL is not set
+CONFIG_EXTRA_TARGETS=""
+# CONFIG_PM is not set
+# CONFIG_SECCOMP is not set
+CONFIG_ISA_DMA_API=y
+
+#
+# Bus options
+#
+CONFIG_ZONE_DMA=y
+CONFIG_GENERIC_ISA_DMA=y
+# CONFIG_PCI is not set
+# CONFIG_PCI_DOMAINS is not set
+# CONFIG_PCI_SYSCALL is not set
+# CONFIG_ARCH_SUPPORTS_MSI is not set
+# CONFIG_PCCARD is not set
+# CONFIG_HAS_RAPIDIO is not set
+
+#
+# Advanced setup
+#
+CONFIG_ADVANCED_OPTIONS=y
+# CONFIG_LOWMEM_SIZE_BOOL is not set
+CONFIG_LOWMEM_SIZE=0x30000000
+# CONFIG_PAGE_OFFSET_BOOL is not set
+CONFIG_PAGE_OFFSET=0xc0000000
+# CONFIG_KERNEL_START_BOOL is not set
+CONFIG_KERNEL_START=0xc0000000
+CONFIG_PHYSICAL_START=0x00000000
+# CONFIG_TASK_SIZE_BOOL is not set
+CONFIG_TASK_SIZE=0xc0000000
+# CONFIG_CONSISTENT_SIZE_BOOL is not set
+CONFIG_CONSISTENT_SIZE=0x00200000
+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 is not set
+CONFIG_IP_PNP_RARP=y
+# 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 is not set
+# 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_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_RDS is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_NET_DSA 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_PHONET is not set
+# CONFIG_IEEE802154 is not set
+# CONFIG_NET_SCHED is not set
+# CONFIG_DCB is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_NET_DROP_MONITOR is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+# CONFIG_WIRELESS is not set
+# CONFIG_WIMAX 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_DEVTMPFS is not set
+# CONFIG_STANDALONE is not set
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+# CONFIG_FW_LOADER is not set
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+# CONFIG_CONNECTOR is not set
+# CONFIG_MTD 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_DEV_COW_COMMON is not set
+CONFIG_BLK_DEV_LOOP=y
+# CONFIG_BLK_DEV_CRYPTOLOOP is not set
+CONFIG_BLK_DEV_NBD=m
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=2
+CONFIG_BLK_DEV_RAM_SIZE=4096
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_BLK_DEV_HD is not set
+CONFIG_MISC_DEVICES=y
+# CONFIG_ENCLOSURE_SERVICES is not set
+# CONFIG_C2PORT is not set
+
+#
+# EEPROM support
+#
+# CONFIG_EEPROM_93CX6 is not set
+CONFIG_HAVE_IDE=y
+# 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_MACINTOSH_DRIVERS is not set
+CONFIG_NETDEVICES=y
+# 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_PHYLIB is not set
+CONFIG_NET_ETHERNET=y
+# CONFIG_MII is not set
+# CONFIG_ETHOC is not set
+# CONFIG_DNET is not set
+# CONFIG_IBM_NEW_EMAC_ZMII is not set
+# 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_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
+# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
+# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
+# CONFIG_B44 is not set
+# CONFIG_KS8842 is not set
+# CONFIG_KS8851_MLL is not set
+# CONFIG_XILINX_EMACLITE is not set
+# CONFIG_NETDEV_1000 is not set
+# CONFIG_NETDEV_10000 is not set
+# CONFIG_WLAN is not set
+
+#
+# Enable WiMAX (Networking options) to see the WiMAX drivers
+#
+# CONFIG_WAN is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP 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=y
+CONFIG_INPUT_FF_MEMLESS=m
+# CONFIG_INPUT_POLLDEV is not set
+
+#
+# Userland interfaces
+#
+# CONFIG_INPUT_MOUSEDEV is not set
+CONFIG_INPUT_JOYDEV=y
+CONFIG_INPUT_EVDEV=y
+# CONFIG_INPUT_EVBUG is not set
+
+#
+# Input Device Drivers
+#
+CONFIG_INPUT_KEYBOARD=y
+# CONFIG_KEYBOARD_ATKBD is not set
+# CONFIG_KEYBOARD_LKKBD is not set
+# CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_OPENCORES is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
+# CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_XTKBD is not set
+# CONFIG_INPUT_MOUSE is not set
+CONFIG_INPUT_JOYSTICK=y
+# CONFIG_JOYSTICK_ANALOG is not set
+# CONFIG_JOYSTICK_A3D is not set
+# CONFIG_JOYSTICK_ADI is not set
+# CONFIG_JOYSTICK_COBRA is not set
+# CONFIG_JOYSTICK_GF2K is not set
+# CONFIG_JOYSTICK_GRIP is not set
+# CONFIG_JOYSTICK_GRIP_MP is not set
+# CONFIG_JOYSTICK_GUILLEMOT is not set
+# CONFIG_JOYSTICK_INTERACT is not set
+# CONFIG_JOYSTICK_SIDEWINDER is not set
+# CONFIG_JOYSTICK_TMDC is not set
+# CONFIG_JOYSTICK_IFORCE is not set
+# CONFIG_JOYSTICK_WARRIOR is not set
+# CONFIG_JOYSTICK_MAGELLAN is not set
+# CONFIG_JOYSTICK_SPACEORB is not set
+# CONFIG_JOYSTICK_SPACEBALL is not set
+# CONFIG_JOYSTICK_STINGER is not set
+# CONFIG_JOYSTICK_TWIDJOY is not set
+# CONFIG_JOYSTICK_ZHENHUA is not set
+# CONFIG_JOYSTICK_JOYDUMP is not set
+# CONFIG_INPUT_TABLET is not set
+# CONFIG_INPUT_TOUCHSCREEN is not set
+# CONFIG_INPUT_MISC is not set
+
+#
+# Hardware I/O ports
+#
+CONFIG_SERIO=y
+# CONFIG_SERIO_I8042 is not set
+# CONFIG_SERIO_SERPORT is not set
+# CONFIG_SERIO_LIBPS2 is not set
+# CONFIG_SERIO_RAW is not set
+# CONFIG_SERIO_XILINX_XPS_PS2 is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+CONFIG_VT=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_VT_CONSOLE=y
+CONFIG_HW_CONSOLE=y
+# CONFIG_VT_HW_CONSOLE_BINDING is not set
+# CONFIG_DEVKMEM is not set
+# CONFIG_SERIAL_NONSTANDARD is not set
+
+#
+# Serial drivers
+#
+# CONFIG_SERIAL_8250 is not set
+
+#
+# Non-8250 serial port support
+#
+# CONFIG_SERIAL_UARTLITE is not set
+CONFIG_UNIX98_PTYS=y
+# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=64
+# CONFIG_HVC_UDBG is not set
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_NVRAM is not set
+# CONFIG_R3964 is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+
+#
+# PPS support
+#
+# CONFIG_PPS is not set
+CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
+# CONFIG_GPIOLIB is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_THERMAL is not set
+# CONFIG_WATCHDOG is not set
+CONFIG_SSB_POSSIBLE=y
+
+#
+# Sonics Silicon Backplane
+#
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_CORE is not set
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+# CONFIG_MFD_TMIO is not set
+# CONFIG_REGULATOR is not set
+# CONFIG_MEDIA_SUPPORT is not set
+
+#
+# Graphics support
+#
+# CONFIG_VGASTATE is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+CONFIG_FB=y
+# CONFIG_FIRMWARE_EDID is not set
+# CONFIG_FB_DDC is not set
+# CONFIG_FB_BOOT_VESA_SUPPORT is not set
+# CONFIG_FB_CFB_FILLRECT is not set
+# CONFIG_FB_CFB_COPYAREA is not set
+# CONFIG_FB_CFB_IMAGEBLIT is not set
+# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
+# CONFIG_FB_SYS_FILLRECT is not set
+# CONFIG_FB_SYS_COPYAREA is not set
+# CONFIG_FB_SYS_IMAGEBLIT is not set
+# CONFIG_FB_FOREIGN_ENDIAN is not set
+# CONFIG_FB_SYS_FOPS is not set
+# CONFIG_FB_SVGALIB is not set
+# CONFIG_FB_MACMODES is not set
+# CONFIG_FB_BACKLIGHT is not set
+# CONFIG_FB_MODE_HELPERS is not set
+# CONFIG_FB_TILEBLITTING is not set
+
+#
+# Frame buffer hardware drivers
+#
+# CONFIG_FB_OF is not set
+# CONFIG_FB_VGA16 is not set
+# CONFIG_FB_S1D13XXX is not set
+# CONFIG_FB_IBM_GXT4500 is not set
+# CONFIG_FB_VIRTUAL is not set
+# CONFIG_FB_METRONOME is not set
+# CONFIG_FB_MB862XX is not set
+# CONFIG_FB_BROADSHEET is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+
+#
+# Console display driver support
+#
+# CONFIG_VGA_CONSOLE is not set
+CONFIG_DUMMY_CONSOLE=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
+# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
+# CONFIG_FONTS is not set
+CONFIG_FONT_8x8=y
+CONFIG_FONT_8x16=y
+CONFIG_LOGO=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+# CONFIG_LOGO_LINUX_CLUT224 is not set
+CONFIG_SOUND=y
+CONFIG_SOUND_OSS_CORE=y
+CONFIG_SOUND_OSS_CORE_PRECLAIM=y
+CONFIG_SND=y
+CONFIG_SND_TIMER=y
+CONFIG_SND_PCM=y
+CONFIG_SND_SEQUENCER=y
+# CONFIG_SND_SEQ_DUMMY is not set
+CONFIG_SND_OSSEMUL=y
+CONFIG_SND_MIXER_OSS=y
+CONFIG_SND_PCM_OSS=y
+CONFIG_SND_PCM_OSS_PLUGINS=y
+CONFIG_SND_SEQUENCER_OSS=y
+# CONFIG_SND_DYNAMIC_MINORS is not set
+CONFIG_SND_SUPPORT_OLD_API=y
+# CONFIG_SND_VERBOSE_PROCFS is not set
+# CONFIG_SND_VERBOSE_PRINTK is not set
+# CONFIG_SND_DEBUG is not set
+# CONFIG_SND_RAWMIDI_SEQ is not set
+# CONFIG_SND_OPL3_LIB_SEQ is not set
+# CONFIG_SND_OPL4_LIB_SEQ is not set
+# CONFIG_SND_SBAWE_SEQ is not set
+# CONFIG_SND_EMU10K1_SEQ is not set
+CONFIG_SND_DRIVERS=y
+# CONFIG_SND_DUMMY is not set
+# CONFIG_SND_VIRMIDI is not set
+# CONFIG_SND_MTPAV is not set
+# CONFIG_SND_SERIAL_U16550 is not set
+# CONFIG_SND_MPU401 is not set
+CONFIG_SND_PPC=y
+# CONFIG_SND_SOC is not set
+# CONFIG_SOUND_PRIME is not set
+CONFIG_HID_SUPPORT=y
+CONFIG_HID=y
+# CONFIG_HIDRAW is not set
+# CONFIG_HID_PID is not set
+
+#
+# Special HID drivers
+#
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_EDAC is not set
+CONFIG_RTC_LIB=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_HCTOSYS=y
+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
+# CONFIG_RTC_DEBUG is not set
+
+#
+# RTC interfaces
+#
+CONFIG_RTC_INTF_SYSFS=y
+CONFIG_RTC_INTF_PROC=y
+CONFIG_RTC_INTF_DEV=y
+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
+# CONFIG_RTC_DRV_TEST is not set
+
+#
+# SPI RTC drivers
+#
+
+#
+# Platform RTC drivers
+#
+# CONFIG_RTC_DRV_CMOS is not set
+# CONFIG_RTC_DRV_DS1286 is not set
+# CONFIG_RTC_DRV_DS1511 is not set
+# CONFIG_RTC_DRV_DS1553 is not set
+# CONFIG_RTC_DRV_DS1742 is not set
+# CONFIG_RTC_DRV_STK17TA8 is not set
+# CONFIG_RTC_DRV_M48T86 is not set
+# CONFIG_RTC_DRV_M48T35 is not set
+# CONFIG_RTC_DRV_M48T59 is not set
+# CONFIG_RTC_DRV_BQ4802 is not set
+# CONFIG_RTC_DRV_V3020 is not set
+
+#
+# on-CPU RTC drivers
+#
+CONFIG_RTC_DRV_GENERIC=y
+# CONFIG_DMADEVICES is not set
+# CONFIG_AUXDISPLAY is not set
+# CONFIG_UIO is not set
+
+#
+# TI VLYNQ
+#
+# CONFIG_STAGING 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=y
+# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
+# CONFIG_EXT3_FS_XATTR is not set
+# CONFIG_EXT4_FS is not set
+CONFIG_JBD=y
+# CONFIG_JBD_DEBUG 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_BTRFS_FS is not set
+# CONFIG_NILFS2_FS is not set
+CONFIG_FILE_LOCKING=y
+CONFIG_FSNOTIFY=y
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# Caches
+#
+# CONFIG_FSCACHE is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+CONFIG_ISO9660_FS=y
+CONFIG_JOLIET=y
+# CONFIG_ZISOFS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+CONFIG_FAT_FS=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_FAT_DEFAULT_CODEPAGE=437
+CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+# CONFIG_PROC_PAGE_MONITOR is not set
+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
+CONFIG_MISC_FILESYSTEMS=y
+# 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_CRAMFS is not set
+# CONFIG_SQUASHFS is not set
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_OMFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_ROMFS_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_ROOT_NFS=y
+# CONFIG_NFSD is not set
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+# CONFIG_RPCSEC_GSS_KRB5 is not set
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+CONFIG_CIFS=y
+# CONFIG_CIFS_STATS is not set
+# CONFIG_CIFS_WEAK_PW_HASH is not set
+# CONFIG_CIFS_XATTR is not set
+# CONFIG_CIFS_DEBUG2 is not set
+# CONFIG_CIFS_EXPERIMENTAL 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=y
+CONFIG_NLS_DEFAULT="iso8859-1"
+CONFIG_NLS_CODEPAGE_437=y
+# CONFIG_NLS_CODEPAGE_737 is not set
+# CONFIG_NLS_CODEPAGE_775 is not set
+# CONFIG_NLS_CODEPAGE_850 is not set
+# CONFIG_NLS_CODEPAGE_852 is not set
+# CONFIG_NLS_CODEPAGE_855 is not set
+# CONFIG_NLS_CODEPAGE_857 is not set
+# CONFIG_NLS_CODEPAGE_860 is not set
+# CONFIG_NLS_CODEPAGE_861 is not set
+# CONFIG_NLS_CODEPAGE_862 is not set
+# CONFIG_NLS_CODEPAGE_863 is not set
+# CONFIG_NLS_CODEPAGE_864 is not set
+# CONFIG_NLS_CODEPAGE_865 is not set
+# CONFIG_NLS_CODEPAGE_866 is not set
+# CONFIG_NLS_CODEPAGE_869 is not set
+# CONFIG_NLS_CODEPAGE_936 is not set
+# CONFIG_NLS_CODEPAGE_950 is not set
+# CONFIG_NLS_CODEPAGE_932 is not set
+# CONFIG_NLS_CODEPAGE_949 is not set
+# CONFIG_NLS_CODEPAGE_874 is not set
+# CONFIG_NLS_ISO8859_8 is not set
+# CONFIG_NLS_CODEPAGE_1250 is not set
+# CONFIG_NLS_CODEPAGE_1251 is not set
+# CONFIG_NLS_ASCII is not set
+CONFIG_NLS_ISO8859_1=y
+# CONFIG_NLS_ISO8859_2 is not set
+# CONFIG_NLS_ISO8859_3 is not set
+# CONFIG_NLS_ISO8859_4 is not set
+# CONFIG_NLS_ISO8859_5 is not set
+# CONFIG_NLS_ISO8859_6 is not set
+# CONFIG_NLS_ISO8859_7 is not set
+# CONFIG_NLS_ISO8859_9 is not set
+# CONFIG_NLS_ISO8859_13 is not set
+# CONFIG_NLS_ISO8859_14 is not set
+# CONFIG_NLS_ISO8859_15 is not set
+# CONFIG_NLS_KOI8_R is not set
+# CONFIG_NLS_KOI8_U is not set
+# CONFIG_NLS_UTF8 is not set
+# CONFIG_DLM is not set
+CONFIG_BINARY_PRINTF=y
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+CONFIG_GENERIC_FIND_LAST_BIT=y
+CONFIG_CRC_CCITT=y
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_T10DIF 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_DECOMPRESS_GZIP=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
+CONFIG_HAVE_LMB=y
+CONFIG_NLATTR=y
+CONFIG_GENERIC_ATOMIC64=y
+
+#
+# Kernel hacking
+#
+CONFIG_PRINTK_TIME=y
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
+# CONFIG_MAGIC_SYSRQ is not set
+# CONFIG_STRIP_ASM_SYMS is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+CONFIG_DETECT_SOFTLOCKUP=y
+# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
+# CONFIG_DETECT_HUNG_TASK is not set
+CONFIG_SCHED_DEBUG=y
+CONFIG_SCHEDSTATS=y
+# CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_DEBUG_SLAB is not set
+# CONFIG_DEBUG_KMEMLEAK is not set
+CONFIG_DEBUG_PREEMPT=y
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+CONFIG_DEBUG_SPINLOCK=y
+CONFIG_DEBUG_MUTEXES=y
+# CONFIG_DEBUG_LOCK_ALLOC is not set
+# CONFIG_PROVE_LOCKING is not set
+# CONFIG_LOCK_STAT is not set
+CONFIG_DEBUG_SPINLOCK_SLEEP=y
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+CONFIG_STACKTRACE=y
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+# CONFIG_DEBUG_INFO is not set
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+# CONFIG_DEBUG_MEMORY_INIT is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_DEBUG_NOTIFIERS is not set
+# CONFIG_DEBUG_CREDENTIALS is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_RCU_CPU_STALL_DETECTOR is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
+# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
+# CONFIG_FAULT_INJECTION is not set
+CONFIG_LATENCYTOP=y
+CONFIG_SYSCTL_SYSCALL_CHECK=y
+# CONFIG_DEBUG_PAGEALLOC is not set
+CONFIG_NOP_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_TRACER_MAX_TRACE=y
+CONFIG_RING_BUFFER=y
+CONFIG_EVENT_TRACING=y
+CONFIG_CONTEXT_SWITCH_TRACER=y
+CONFIG_TRACING=y
+CONFIG_GENERIC_TRACER=y
+CONFIG_TRACING_SUPPORT=y
+CONFIG_FTRACE=y
+# CONFIG_FUNCTION_TRACER is not set
+# CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_PREEMPT_TRACER is not set
+CONFIG_SCHED_TRACER=y
+CONFIG_BOOT_TRACER=y
+CONFIG_BRANCH_PROFILE_NONE=y
+# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
+# CONFIG_PROFILE_ALL_BRANCHES is not set
+# CONFIG_STACK_TRACER is not set
+# CONFIG_KMEMTRACE is not set
+# CONFIG_WORKQUEUE_TRACER is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_FTRACE_STARTUP_TEST is not set
+# CONFIG_RING_BUFFER_BENCHMARK is not set
+# CONFIG_DYNAMIC_DEBUG is not set
+CONFIG_DMA_API_DEBUG=y
+# CONFIG_SAMPLES is not set
+CONFIG_HAVE_ARCH_KGDB=y
+# CONFIG_KGDB is not set
+# CONFIG_PPC_DISABLE_WERROR is not set
+CONFIG_PPC_WERROR=y
+CONFIG_PRINT_STACK_DEPTH=64
+# CONFIG_DEBUG_STACKOVERFLOW is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_PPC_EMULATED_STATS is not set
+# CONFIG_CODE_PATCHING_SELFTEST is not set
+# CONFIG_FTR_FIXUP_SELFTEST is not set
+# CONFIG_MSI_BITMAP_SELFTEST is not set
+# CONFIG_XMON is not set
+# CONFIG_IRQSTACKS is not set
+# CONFIG_VIRQ_DEBUG is not set
+# CONFIG_BDI_SWITCH is not set
+# CONFIG_BOOTX_TEXT is not set
+CONFIG_PPC_EARLY_DEBUG=y
+# CONFIG_PPC_EARLY_DEBUG_LPAR is not set
+# CONFIG_PPC_EARLY_DEBUG_G5 is not set
+# CONFIG_PPC_EARLY_DEBUG_RTAS_PANEL is not set
+# CONFIG_PPC_EARLY_DEBUG_RTAS_CONSOLE is not set
+# CONFIG_PPC_EARLY_DEBUG_MAPLE is not set
+# CONFIG_PPC_EARLY_DEBUG_ISERIES is not set
+# CONFIG_PPC_EARLY_DEBUG_PAS_REALMODE is not set
+# CONFIG_PPC_EARLY_DEBUG_BEAT is not set
+# CONFIG_PPC_EARLY_DEBUG_44x is not set
+# CONFIG_PPC_EARLY_DEBUG_40x is not set
+# CONFIG_PPC_EARLY_DEBUG_CPM is not set
+CONFIG_PPC_EARLY_DEBUG_USBGECKO=y
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITYFS is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+# CONFIG_CRYPTO is not set
+# CONFIG_PPC_CLOCK is not set
+# CONFIG_VIRTUALIZATION is not set
-- 
1.6.3.3