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Boot to sysnand if no emunand partition.

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This commit is contained in:
Reisyukaku 2015-08-07 03:01:42 -04:00
parent 60aa8047d4
commit 95f04ee3d0
4 changed files with 26 additions and 19 deletions
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39
source/firm.c
View File

@ -13,6 +13,8 @@
firmHeader *firmLocation = (firmHeader *)0x24000000;
const u32 firmSize = 0xF1000;
firmSectionHeader *section;
u32 emuOffset = 0;
u32 emuHeader = 0;
void loadFirm(void){
//Read FIRM from SD card and write to FCRAM
@ -21,31 +23,36 @@ void loadFirm(void){
}
void loadSys(void){
//stubbed
memcpy((u8*)mpuCode, mpu, sizeof(mpu));
}
void patchFirm(void){
//Part1: Add emunand parsing code
u32 offset = 0;
u32 header = 0;
if(getEmunand(&offset, &header) == 1){
fileRead((u8*)emuCode, "/rei/emunand/emunand.bin", 0);
u32 *pos_offset = memsearch((u8*)emuCode, "NAND", 0x218, 4);
u32 *pos_header = memsearch((u8*)emuCode, "NCSD", 0x218, 4);
memcpy((void *)pos_offset, (void *)offset, 4);
memcpy((void *)pos_header, (void *)header, 4);
}
//Part2: Add emunand hooks
memcpy((u8*)emuHook1, eh1, sizeof(eh1));
void loadEmu(void){
fileRead((u8*)emuCode, "/rei/emunand/emunand.bin", 0);
u32 *pos_offset = memsearch((u8*)emuCode, "NAND", 0x218, 4);
u32 *pos_header = memsearch((u8*)emuCode, "NCSD", 0x218, 4);
memcpy((void *)pos_offset, (void *)emuOffset, 4);
memcpy((void *)pos_header, (void *)emuHeader, 4);
//Add emunand hooks
memcpy((u8*)mpuCode, mpu, sizeof(mpu));
memcpy((u8*)emuHook2, eh2, sizeof(eh2));
memcpy((u8*)emuHook3, eh3, sizeof(eh3));
memcpy((u8*)emuHook4, eh4, sizeof(eh4));
}
//Part3: Disable signature checks
void patchFirm(void){
//Part1: Get Emunand
if(getEmunand(&emuOffset, &emuHeader) == 1)
loadEmu();
else
loadSys();
//Part2: Disable signature checks
memcpy((u8*)patch1, p1, sizeof(p1));
memcpy((u8*)patch2, p2, sizeof(p2));
//Part4: Create arm9 thread
//Part3: Create arm9 thread
fileRead((u8*)threadCode, "/rei/thread/arm9.bin", 0);
memcpy((u8*)threadHook1, th1, sizeof(th1));
memcpy((u8*)threadHook2, th2, sizeof(th2));

1
source/firm.h
View File

@ -8,6 +8,7 @@
void loadSplash(void);
void loadFirm(void);
void loadSys(void);
void loadEmu(void);
void patchFirm(void);
void launchFirm(void);

4
source/patches.h
View File

@ -19,12 +19,12 @@
*/
//Addresses to patch
u32 emuCode = KERNEL9 + (0x0801A4C0 - K9_ADDR);
u32 emuHook1 = KERNEL9 + (0x0801B3D4 - K9_ADDR);
u32 mpuCode = KERNEL9 + (0x0801B3D4 - K9_ADDR);
u32 emuHook2 = PROC9 + (0x080282F8 - P9_ADDR);
u32 emuHook3 = PROC9 + (0x0807877E - P9_ADDR);
u32 emuHook4 = PROC9 + (0x080787BE - P9_ADDR);
//Patches
u8 eh1[0x2C] = {
u8 mpu[0x2C] = { //MPU shit
0x03, 0x00, 0x36, 0x00, 0x00, 0x00, 0x10, 0x10, 0x01, 0x00, 0x00, 0x01, 0x03, 0x00, 0x36, 0x00,
0x00, 0x00, 0x00, 0x20, 0x01, 0x01, 0x01, 0x01, 0x03, 0x06, 0x20, 0x00, 0x00, 0x00, 0x00, 0x08,
0x01, 0x01, 0x01, 0x01, 0x03, 0x06, 0x1C, 0x00, 0x00, 0x00, 0x02, 0x08

1
thread/source/_start.s
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@ -1,5 +1,4 @@
.arm
.global thread
.global _start
_start:
push {r0-r12 , lr}