Commit 6cdd2417 authored by Albert Herranz's avatar Albert Herranz Committed by Grant Likely

powerpc: wii: bootwrapper bits

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: default avatarAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: default avatarSegher Boessenkool <segher@kernel.crashing.org>
Acked-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 7a09116c
......@@ -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-head.S gamecube.c
gamecube-head.S gamecube.c wii-head.S 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
......
/*
* arch/powerpc/boot/wii-head.S
*
* Nintendo Wii bootwrapper entry.
* 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 "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
* - if the high BATs are enabled or not
*
* We enable the high BATs, 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 */
mtspr 0x230, 8 /* IBAT4U */
mtspr 0x232, 8 /* IBAT5U */
mtspr 0x234, 8 /* IBAT6U */
mtspr 0x236, 8 /* IBAT7U */
mtspr 0x238, 8 /* DBAT4U */
mtspr 0x23a, 8 /* DBAT5U */
mtspr 0x23c, 8 /* DBAT6U */
mtspr 0x23e, 8 /* DBAT7U */
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 */
lis 8, 0x1000 /* MEM2 */
ori 8, 8, 0x07ff /* 64MiB */
lis 9, 0x1000
ori 9, 9, 0x0002 /* rw */
mtspr 0x216, 8 /* IBAT3U */
mtspr 0x217, 9 /* IBAT3L */
mtspr 0x21e, 8 /* DBAT3U */
mtspr 0x21f, 9 /* DBAT3L */
/* enable the high BATs */
mfspr 8, 0x3f3 /* HID4 */
oris 8, 8, 0x0200
mtspr 0x3f3, 8 /* HID4 */
/* 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:
/* turn on the front blue led (aka: yay! we got here!) */
lis 8, 0x0d00
ori 8, 8, 0x00c0
lwz 9, 0(8)
ori 9, 9, 0x20
stw 9, 0(8)
b _zimage_start_lib
/*
* 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);
#define HW_REG(x) ((void *)(x))
#define EXI_CTRL HW_REG(0x0d800070)
#define EXI_CTRL_ENABLE (1<<0)
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);
/*
* 'mini' boots the Broadway processor with EXI disabled.
* We need it enabled before probing for the USB Gecko.
*/
out_be32(EXI_CTRL, in_be32(EXI_CTRL) | EXI_CTRL_ENABLE);
if (ug_probe())
console_ops.write = ug_console_write;
}
......@@ -230,7 +230,7 @@ xpedite52*)
link_address='0x1400000'
platformo=$object/cuboot-85xx.o
;;
gamecube)
gamecube|wii)
link_address='0x600000'
platformo="$object/$platform-head.o $object/$platform.o"
;;
......
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