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_herr...@yahoo.es>
---
arch/powerpc/boot/Makefile | 4 ++-
arch/powerpc/boot/gamecube.c | 78 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 81 insertions(+), 1 deletions(-)
create mode 100644 arch/powerpc/boot/gamecube.c
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 44bce21..b2f06b0 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.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.c b/arch/powerpc/boot/gamecube.c
new file mode 100644
index 0000000..0d6c517
--- /dev/null
+++ b/arch/powerpc/boot/gamecube.c
@@ -0,0 +1,78 @@
+/*
+ * 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);
+
+/*
+ * We enter with the cache enabled, the MMU enabled and some known legacy
+ * memory mappings active. xBAT3 is unused.
+ *
+ * We leave the MMU enabled, but we switch to an identity mapped memory
+ * scheme as expected by the start code.
+ *
+ */
+asm ("\n\
+.text\n\
+.globl _zimage_start\n\
+_zimage_start:\n\
+\n\
+ isync\n\
+ /* IBAT3,DBAT3 for first 16Mbytes */\n\
+ li 8, 0x01ff /* 16MB */\n\
+ li 9, 0x0002 /* rw */\n\
+ mtspr 0x216, 8 /* IBAT3U */\n\
+ mtspr 0x217, 9 /* IBAT3L */\n\
+ mtspr 0x21e, 8 /* DBAT3U */\n\
+ mtspr 0x21f, 9 /* DBAT3L */\n\
+\n\
+ sync\n\
+ isync\n\
+\n\
+ li 3, 0\n\
+ li 4, 0\n\
+ li 5, 0\n\
+\n\
+ bcl- 20,4*cr7+so,1f\n\
+1:\n\
+ mflr 8\n\
+ clrlwi 8, 8, 3\n\
+ addi 8, 8, 2f - 1b\n\
+ mtlr 8\n\
+ blr\n\
+2:\n\
+ b _zimage_start_lib\n\
+");
+
+/*
+ *
+ */
+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_grab_io_base() && ug_is_adapter_present())
+ console_ops.write = ug_console_write;
+}
+
--
1.6.3.3
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