[RFC PATCH 05/19] powerpc: wii: bootwrapper bits
Albert Herranz
albert_herranz at yahoo.es
Mon Nov 23 09:01:36 EST 2009
Add support for the Nintendo Wii video game console to the powerpc
bootwrapper.
dtbImage.wii is a wrapped image that contains a flat device tree,
an entry point compatible with the Homebrew Channel and BootMii,
and an optional initrd.
Signed-off-by: Albert Herranz <albert_herranz at yahoo.es>
---
arch/powerpc/boot/Makefile | 3 +-
arch/powerpc/boot/wii.c | 173 ++++++++++++++++++++++++++++++++++++++++++++
arch/powerpc/boot/wrapper | 3 +
3 files changed, 178 insertions(+), 1 deletions(-)
create mode 100644 arch/powerpc/boot/wii.c
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index b2f06b0..fbaf101 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -77,7 +77,7 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.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 \
- gamecube.c
+ gamecube.c wii.c
src-boot := $(src-wlib) $(src-plat) empty.c
src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -256,6 +256,7 @@ image-$(CONFIG_STORCENTER) += cuImage.storcenter
image-$(CONFIG_MPC7448HPC2) += cuImage.mpc7448hpc2
image-$(CONFIG_PPC_C2K) += cuImage.c2k
image-$(CONFIG_GAMECUBE) += dtbImage.gamecube
+image-$(CONFIG_WII) += dtbImage.wii
# Board port in arch/powerpc/platform/amigaone/Kconfig
image-$(CONFIG_AMIGAONE) += cuImage.amigaone
diff --git a/arch/powerpc/boot/wii.c b/arch/powerpc/boot/wii.c
new file mode 100644
index 0000000..65b73a1
--- /dev/null
+++ b/arch/powerpc/boot/wii.c
@@ -0,0 +1,173 @@
+/*
+ * arch/powerpc/boot/wii.c
+ *
+ * Nintendo Wii bootwrapper support
+ * 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"
+
+#include "ugecon.h"
+
+
+BSS_STACK(8192);
+
+/*
+ * We enter with an unknown cache, high BATs and MMU status.
+ *
+ * We enable the MMU with an identity mapped memory scheme as expected
+ * by the start code.
+ *
+ */
+asm ("\n\
+.text\n\
+.globl _zimage_start\n\
+_zimage_start:\n\
+\n\
+ mfmsr 9\n\
+ andi. 0, 9, (1<<4)|(1<<5) /* MSR_DR|MSR_IR */\n\
+ bcl 20, 31, 1f\n\
+1: \n\
+ mflr 8\n\
+ clrlwi 8, 8, 3 /* convert to a real address */\n\
+ addi 8, 8, _mmu_off - 1b\n\
+ andc 9, 9, 0\n\
+ mtspr 0x01a, 8 /* SRR0 */\n\
+ mtspr 0x01b, 9 /* SRR1 */\n\
+ sync\n\
+ rfi\n\
+_mmu_off: \n\
+ /* MMU disabled */\n\
+\n\
+ /* Setup BATs */\n\
+ isync\n\
+ li 8, 0\n\
+ mtspr 0x210, 8 /* IBAT0U */\n\
+ mtspr 0x211, 8 /* IBAT0L */\n\
+ mtspr 0x212, 8 /* IBAT1U */\n\
+ mtspr 0x213, 8 /* IBAT1L */\n\
+ mtspr 0x214, 8 /* IBAT2U */\n\
+ mtspr 0x215, 8 /* IBAT2L */\n\
+ mtspr 0x216, 8 /* IBAT3U */\n\
+ mtspr 0x217, 8 /* IBAT3L */\n\
+ mtspr 0x218, 8 /* DBAT0U */\n\
+ mtspr 0x219, 8 /* DBAT0L */\n\
+ mtspr 0x21a, 8 /* DBAT1U */\n\
+ mtspr 0x21b, 8 /* DBAT1L */\n\
+ mtspr 0x21c, 8 /* DBAT2U */\n\
+ mtspr 0x21d, 8 /* DBAT2L */\n\
+ mtspr 0x21e, 8 /* DBAT3U */\n\
+ mtspr 0x21f, 8 /* DBAT3L */\n\
+\n\
+ mtspr 0x230, 8 /* IBAT4U */\n\
+ mtspr 0x231, 8 /* IBAT4L */\n\
+ mtspr 0x232, 8 /* IBAT5U */\n\
+ mtspr 0x233, 8 /* IBAT5L */\n\
+ mtspr 0x234, 8 /* IBAT6U */\n\
+ mtspr 0x235, 8 /* IBAT6L */\n\
+ mtspr 0x236, 8 /* IBAT7U */\n\
+ mtspr 0x237, 8 /* IBAT7L */\n\
+ mtspr 0x238, 8 /* DBAT4U */\n\
+ mtspr 0x239, 8 /* DBAT4L */\n\
+ mtspr 0x23a, 8 /* DBAT5U */\n\
+ mtspr 0x23b, 8 /* DBAT5L */\n\
+ mtspr 0x23c, 8 /* DBAT6U */\n\
+ mtspr 0x23d, 8 /* DBAT6L */\n\
+ mtspr 0x23e, 8 /* DBAT7U */\n\
+ mtspr 0x23f, 8 /* DBAT7L */\n\
+\n\
+ isync\n\
+ li 8, 0x01ff /* first 16MiB */\n\
+ li 9, 0x0002 /* rw */\n\
+ mtspr 0x210, 8 /* IBAT0U */\n\
+ mtspr 0x211, 9 /* IBAT0L */\n\
+ mtspr 0x218, 8 /* DBAT0U */\n\
+ mtspr 0x219, 9 /* DBAT0L */\n\
+\n\
+ lis 8, 0xcc00 /* I/O mem */\n\
+ ori 8, 8, 0x3ff /* 32MiB */\n\
+ lis 9, 0x0c00\n\
+ ori 9, 9, 0x002a /* uncached, guarded, rw */\n\
+ mtspr 0x21a, 8 /* DBAT1U */\n\
+ mtspr 0x21b, 9 /* DBAT1L */\n\
+\n\
+ lis 8, 0x0100 /* next 8MiB */\n\
+ ori 8, 8, 0x00ff /* 8MiB */\n\
+ lis 9, 0x0100 /* next 8MiB */\n\
+ ori 9, 9, 0x0002 /* rw */\n\
+ mtspr 0x214, 8 /* IBAT2U */\n\
+ mtspr 0x215, 9 /* IBAT2L */\n\
+ mtspr 0x21c, 8 /* DBAT2U */\n\
+ mtspr 0x21d, 9 /* DBAT2L */\n\
+\n\
+ lis 8, 0x1000 /* MEM2 */\n\
+ ori 8, 8, 0x07ff /* 64MiB */\n\
+ lis 9, 0x1000\n\
+ ori 9, 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\
+ /* enable high BATs */\n\
+ lis 8, 0x8200\n\
+ mtspr 0x3f3, 8 /* HID4 */\n\
+\n\
+ /* enable caches */\n\
+ mfspr 8, 0x3f0\n\
+ ori 8, 8, 0xc000\n\
+ mtspr 0x3f0, 8 /* HID0 */\n\
+ isync\n\
+\n\
+ li 3, 0\n\
+ li 4, 0\n\
+ li 5, 0\n\
+\n\
+ bcl 20, 31, 1f\n\
+1: \n\
+ mflr 8\n\
+ addi 8, 8, _mmu_on - 1b\n\
+ mfmsr 9\n\
+ ori 9, 9, (1<<4)|(1<<5) /* MSR_DR|MSR_IR */\n\
+ mtspr 0x01a, 8 /* SRR0 */\n\
+ mtspr 0x01b, 9 /* SRR1 */\n\
+ sync\n\
+ rfi\n\
+_mmu_on: \n\
+ /* turn on the front blue led (aka: yay! we got here!) */\n\
+ lis 8, 0xcd00\n\
+ ori 8, 8, 0x00c0\n\
+ lwz 9, 0(8)\n\
+ ori 9, 9, 0x20\n\
+ stw 9, 0(8)\n\
+ b _zimage_start_lib\n\
+");
+
+/*
+ *
+ */
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5)
+{
+ u32 heapsize = 24*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;
+}
+
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index ac9e9a5..0e9ce10 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -230,6 +230,9 @@ xpedite52*)
link_address='0x1400000'
platformo=$object/cuboot-85xx.o
;;
+wii|gamecube)
+ link_address='0x600000'
+ ;;
esac
vmz="$tmpdir/`basename \"$kernel\"`.$ext"
--
1.6.3.3
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