powerpc: wii: bootwrapper bits (6cdd2417) · Commits · 戴 / test

arch/powerpc/boot/Makefile

+2 −1

Original line number	Diff line number	Diff line
		@@ -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

0 → 100644

+142 −0

Original line number	Diff line number	Diff line
		/*
		* 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

0 → 100644

+46 −0

Original line number	Diff line number	Diff line
		/*
		* 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 = 2410241024 - (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;
		}

arch/powerpc/boot/wrapper

+1 −1

Original line number	Diff line number	Diff line
		@@ -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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