48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/*
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* emunand.c
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* by Reisyukaku
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* Copyright (c) 2015 All Rights Reserved
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*/
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#include "emunand.h"
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#include "memory.h"
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#include "fatfs/ff.h"
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#include "fatfs/sdmmc/sdmmc.h"
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static u8 *temp = (u8*)0x24300000;
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void getEmunandSect(u32 *off, u32 *head){
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u32 nandSize = getMMCDevice(0)->total_size;
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if (sdmmc_sdcard_readsectors(nandSize, 1, temp) == 0) {
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if (*(u32*)(temp + 0x100) == NCSD_MAGIC) {
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*off = 0;
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*head = nandSize;
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}
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}
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}
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void getSDMMC(void *offset, u32 *off, u32 size){
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//Look for struct code
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unsigned char pattern[] = {0x01, 0x21, 0x20, 0x18, 0x20, 0x30};
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*off = memsearch(offset, pattern, size, 6);
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//Get DCD values
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unsigned char buf[4];
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int p;
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u32 addr = 0;
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u32 additive = 0;
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memcpy((void*)buf, (void*)(*off+0x0A), 4);
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for (p = 0; p < 4; p++) addr |= ((u32) buf[p]) << (8 * p);
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memcpy((void*)buf, (void*)(*off+0x0E), 4);
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for (p = 0; p < 4; p++) additive |= ((u32) buf[p]) << (8 * p);
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//Return result
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*off = addr + additive;
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}
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void getEmuRW(void *pos, u32 size, u32 *readOff, u32 *writeOff){
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//Look for read/write code
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unsigned char pattern[] = {0x04, 0x00, 0x0D, 0x00, 0x17, 0x00, 0x1E, 0x00, 0xC8, 0x05};
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*writeOff = memsearch(pos, pattern, size, 10);
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*readOff = *writeOff - 0x40; //TODO: Maybe make memsearch work properly for this.
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} |