diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/boot/gamecube-head.S')
-rw-r--r-- | ANDROID_3.4.5/arch/powerpc/boot/gamecube-head.S | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/boot/gamecube-head.S b/ANDROID_3.4.5/arch/powerpc/boot/gamecube-head.S deleted file mode 100644 index 65a9b2a3..00000000 --- a/ANDROID_3.4.5/arch/powerpc/boot/gamecube-head.S +++ /dev/null @@ -1,111 +0,0 @@ -/* - * arch/powerpc/boot/gamecube-head.S - * - * Nintendo GameCube bootwrapper entry. - * 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 "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 - * - * We 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 */ - - 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 */ - - /* 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: - b _zimage_start_lib - |