homebrewfilter/nand-loader/source/stub.S

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1.5 KiB
ArmAsm
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2012-12-08 20:53:27 +01:00
.rodata
.globl bgData
bgData:
.incbin "../data/background"
.globl loadingImg
loadingImg:
.incbin "../data/loading"
.globl errorImg
errorImg:
.incbin "../data/error"
#include "asm.h"
.text
.section .stub
.extern _start
.globl _stub_start
_stub_start:
lis r3, 0x0011
ori r3, r3, 0x0C64
mtspr HID0, r3
isync
li r4, 0x2000
mtmsr r4
ori r3, r3, 0xC000
mtspr HID0, r3
isync
li r0, 0
mtspr IBAT0U, r0
mtspr IBAT1U, r0
mtspr IBAT2U, r0
mtspr IBAT3U, r0
mtspr IBAT4U, r0
mtspr IBAT5U, r0
mtspr DBAT0U, r0
mtspr DBAT1U, r0
mtspr DBAT2U, r0
mtspr DBAT3U, r0
mtspr DBAT4U, r0
mtspr DBAT5U, r0
isync
lis r0, 0x8000
mtsr 0, r0
mtsr 1, r0
mtsr 2, r0
mtsr 3, r0
mtsr 4, r0
mtsr 5, r0
mtsr 6, r0
mtsr 7, r0
mtsr 8, r0
mtsr 9, r0
mtsr 10, r0
mtsr 11, r0
mtsr 12, r0
mtsr 13, r0
mtsr 14, r0
mtsr 15, r0
isync
li r3, 2
lis r4, 0x8000
ori r4, r4, 0x1FFF
mtspr DBAT0L, r3
mtspr DBAT0U, r4
isync
mtspr IBAT0L, r3
mtspr IBAT0U, r4
isync
addis r3, r3, 0x1000
addis r4, r4, 0x1000
mtspr DBAT4L, r3
mtspr DBAT4U, r4
isync
mtspr IBAT4L, r3
mtspr IBAT4U, r4
isync
li r3, 0x2A
lis r4, 0xC000
ori r4, r4, 0x1FFF
mtspr DBAT1L, r3
mtspr DBAT1U, r4
isync
mtspr IBAT1L, r3
mtspr IBAT1U, r4
isync
addis r3, r3, 0x1000
addis r4, r4, 0x1000
mtspr DBAT2L, r3
mtspr DBAT2U, r4
isync
mtspr IBAT2L, r3
mtspr IBAT2U, r4
isync
li r3, 0
mfmsr r3
ori r3, r3, MSR_DR|MSR_IR
mtsrr1 r3
lis r3, _start@h
ori r3, r3, _start@l
mtsrr0 r3
rfi