tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
powerpc: gamecube: bootwrapper bits
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>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
authored by
Albert Herranz
and committed by
Grant Likely
b68a24bc
86ad53f8
+153
-1
+3
-1
arch/powerpc/boot/Makefile
+3
-1
arch/powerpc/boot/Makefile
···
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cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
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cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
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virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
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-
cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c
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cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c \
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gamecube-head.S gamecube.c
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src-boot := $(src-wlib) $(src-plat) empty.c
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src-boot := $(addprefix $(obj)/, $(src-boot))
···
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image-$(CONFIG_STORCENTER) += cuImage.storcenter
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image-$(CONFIG_MPC7448HPC2) += cuImage.mpc7448hpc2
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image-$(CONFIG_PPC_C2K) += cuImage.c2k
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image-$(CONFIG_GAMECUBE) += dtbImage.gamecube
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# Board port in arch/powerpc/platform/amigaone/Kconfig
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image-$(CONFIG_AMIGAONE) += cuImage.amigaone
+111
arch/powerpc/boot/gamecube-head.S
+111
arch/powerpc/boot/gamecube-head.S
···
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/*
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* arch/powerpc/boot/gamecube-head.S
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*
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* Nintendo GameCube bootwrapper entry.
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* Copyright (C) 2004-2009 The GameCube Linux Team
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* Copyright (C) 2008,2009 Albert Herranz
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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*/
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#include "ppc_asm.h"
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/*
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* The entry code does no assumptions regarding:
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* - if the data and instruction caches are enabled or not
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* - if the MMU is enabled or not
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*
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* We enable the caches if not already enabled, enable the MMU with an
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* identity mapping scheme and jump to the start code.
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*/
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.text
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.globl _zimage_start
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_zimage_start:
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/* turn the MMU off */
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mfmsr 9
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rlwinm 9, 9, 0, ~((1<<4)|(1<<5)) /* MSR_DR|MSR_IR */
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bcl 20, 31, 1f
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1:
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mflr 8
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clrlwi 8, 8, 3 /* convert to a real address */
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addi 8, 8, _mmu_off - 1b
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mtsrr0 8
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mtsrr1 9
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rfi
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_mmu_off:
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/* MMU disabled */
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/* setup BATs */
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isync
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li 8, 0
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mtspr 0x210, 8 /* IBAT0U */
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mtspr 0x212, 8 /* IBAT1U */
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mtspr 0x214, 8 /* IBAT2U */
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mtspr 0x216, 8 /* IBAT3U */
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mtspr 0x218, 8 /* DBAT0U */
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mtspr 0x21a, 8 /* DBAT1U */
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mtspr 0x21c, 8 /* DBAT2U */
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mtspr 0x21e, 8 /* DBAT3U */
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li 8, 0x01ff /* first 16MiB */
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li 9, 0x0002 /* rw */
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mtspr 0x211, 9 /* IBAT0L */
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mtspr 0x210, 8 /* IBAT0U */
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mtspr 0x219, 9 /* DBAT0L */
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mtspr 0x218, 8 /* DBAT0U */
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lis 8, 0x0c00 /* I/O mem */
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ori 8, 8, 0x3ff /* 32MiB */
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lis 9, 0x0c00
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ori 9, 9, 0x002a /* uncached, guarded, rw */
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mtspr 0x21b, 9 /* DBAT1L */
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mtspr 0x21a, 8 /* DBAT1U */
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lis 8, 0x0100 /* next 8MiB */
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ori 8, 8, 0x00ff /* 8MiB */
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lis 9, 0x0100
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ori 9, 9, 0x0002 /* rw */
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mtspr 0x215, 9 /* IBAT2L */
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mtspr 0x214, 8 /* IBAT2U */
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mtspr 0x21d, 9 /* DBAT2L */
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mtspr 0x21c, 8 /* DBAT2U */
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+
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/* enable and invalidate the caches if not already enabled */
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mfspr 8, 0x3f0 /* HID0 */
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andi. 0, 8, (1<<15) /* HID0_ICE */
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bne 1f
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ori 8, 8, (1<<15)|(1<<11) /* HID0_ICE|HID0_ICFI*/
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1:
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andi. 0, 8, (1<<14) /* HID0_DCE */
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bne 1f
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ori 8, 8, (1<<14)|(1<<10) /* HID0_DCE|HID0_DCFI*/
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1:
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mtspr 0x3f0, 8 /* HID0 */
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isync
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/* initialize arguments */
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li 3, 0
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li 4, 0
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li 5, 0
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/* turn the MMU on */
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bcl 20, 31, 1f
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1:
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mflr 8
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addi 8, 8, _mmu_on - 1b
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mfmsr 9
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ori 9, 9, (1<<4)|(1<<5) /* MSR_DR|MSR_IR */
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mtsrr0 8
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mtsrr1 9
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sync
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rfi
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_mmu_on:
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b _zimage_start_lib
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+35
arch/powerpc/boot/gamecube.c
+35
arch/powerpc/boot/gamecube.c
···
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/*
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* arch/powerpc/boot/gamecube.c
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*
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* Nintendo GameCube bootwrapper support
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* Copyright (C) 2004-2009 The GameCube Linux Team
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* Copyright (C) 2008,2009 Albert Herranz
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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*/
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#include <stddef.h>
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#include "stdio.h"
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#include "types.h"
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#include "io.h"
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#include "ops.h"
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#include "ugecon.h"
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BSS_STACK(8192);
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void platform_init(unsigned long r3, unsigned long r4, unsigned long r5)
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{
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u32 heapsize = 16*1024*1024 - (u32)_end;
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simple_alloc_init(_end, heapsize, 32, 64);
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fdt_init(_dtb_start);
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if (ug_probe())
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console_ops.write = ug_console_write;
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}
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+4
arch/powerpc/boot/wrapper
+4
arch/powerpc/boot/wrapper