//Nand redirection
void loadEmu(void){
//Dont boot emu if AGB game was just played, or if START was held.
if((HID & 0xFFF) == (1 << 3) || CFG_BOOTENV == 0x7) return;
//Read emunand code from SD
fopen("/rei/emunand/emunand.bin");
Size emuSize = fsize();
getEmuCode(firmLocation, firmSize, &emuCodeOffset);
fread(emuCodeOffset, 1, emuSize);
fclose();
//Setup Emunand code
uPtr *pos_sdmmc = memsearch(emuCodeOffset, "SDMC", emuSize, 4);
uPtr *pos_offset = memsearch(emuCodeOffset, "NAND", emuSize, 4);
uPtr *pos_header = memsearch(emuCodeOffset, "NCSD", emuSize, 4);
getSDMMC(firmLocation, firmSize, &sdmmcOffset);
getEmuRW(firmLocation, firmSize, &emuRead, &emuWrite);
*pos_sdmmc = sdmmcOffset;
*pos_offset = emuOffset;
*pos_header = emuHeader;
//Add Emunand hooks
memcpy((u8*)emuRead, nandRedir, sizeof(nandRedir));
memcpy((u8*)emuWrite, nandRedir, sizeof(nandRedir));
//Set MPU for emu code region
getMPU(firmLocation, firmSize, &mpuOffset);
memcpy((u8*)mpuOffset, mpu, sizeof(mpu));
}
//Nand redirection
void loadEmu(void){
//Read emunand code from SD
getEmuCode(firmLocation, firmSize, &emuCodeOffset);
memcpy((void*)emuCodeOffset, emunand, emunand_size);
//Setup Emunand code
uPtr *pos_sdmmc = (uPtr*)memsearch((void*)emuCodeOffset, "SDMC", emunand_size, 4);
uPtr *pos_offset = (uPtr*)memsearch((void*)emuCodeOffset, "NAND", emunand_size, 4);
uPtr *pos_header = (uPtr*)memsearch((void*)emuCodeOffset, "NCSD", emunand_size, 4);
getSDMMC(firmLocation, firmSize, (void*)&sdmmcOffset);
getEmuRW(firmLocation, firmSize, (void*)&emuRead, (void*)&emuWrite);
*pos_sdmmc = sdmmcOffset;
*pos_offset = emuOffset;
*pos_header = emuHeader;
//Add Emunand hooks
memcpy((void*)emuRead, nandRedir, sizeof(nandRedir));
memcpy((void*)emuWrite, nandRedir, sizeof(nandRedir));
}
//Nand redirection
void loadEmu(void){
//Read emunand code from SD
u32 code = emuCode();
const char path[] = "/rei/emunand/emunand.bin";
u32 size = fileSize(path);
fileRead(code, path, size);
//Find and patch emunand related offsets
u32 *pos_sdmmc = memsearch(code, "SDMC", size, 4);
u32 *pos_offset = memsearch(code, "NAND", size, 4);
u32 *pos_header = memsearch(code, "NCSD", size, 4);
getSDMMC(firmLocation, &sdmmcOffset, firmSize);
getEmunandSect(&emuOffset, &emuHeader);
getEmuRW(firmLocation, firmSize, &emuRead, &emuWrite);
*pos_sdmmc = sdmmcOffset;
*pos_offset = emuOffset;
*pos_header = emuHeader;
//Add emunand hooks
memcpy((u8*)emuRead, nandRedir, sizeof(nandRedir));
memcpy((u8*)emuWrite, nandRedir, sizeof(nandRedir));
memcpy((u8*)mpuCode(), mpu, sizeof(mpu));
}
