55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/*
|
|
* emunand.c
|
|
* by Reisyukaku
|
|
* Copyright (c) 2015 All Rights Reserved
|
|
*/
|
|
|
|
#include "emunand.h"
|
|
#include "memory.h"
|
|
#include "fatfs/sdmmc/sdmmc.h"
|
|
|
|
static u8 *temp = (u8 *)0x24300000;
|
|
|
|
void getEmunandSect(u32 *off, u32 *head){
|
|
u32 nandSize = getMMCDevice(0)->total_size;
|
|
if(sdmmc_sdcard_readsectors(nandSize, 1, temp) == 0){
|
|
if(*(u32 *)(temp + 0x100) == NCSD_MAGIC){
|
|
*off = 0;
|
|
*head = nandSize;
|
|
}
|
|
}
|
|
}
|
|
|
|
void getSDMMC(void *pos, u32 *off, u32 size){
|
|
//Look for struct code
|
|
const unsigned char pattern[] = {0x21, 0x20, 0x18, 0x20};
|
|
*off = (u32)memsearch(pos, pattern, size, 4) - 1;
|
|
|
|
//Get DCD values
|
|
u8 buf[4];
|
|
u32 addr = 0,
|
|
additive = 0,
|
|
p;
|
|
memcpy(buf, (void *)(*off+0x0A), 4);
|
|
for (p = 0; p < 4; p++) addr |= ((u32) buf[p]) << (8 * p);
|
|
memcpy(buf, (void *)(*off+0x0E), 4);
|
|
for (p = 0; p < 4; p++) additive |= ((u32) buf[p]) << (8 * p);
|
|
|
|
//Return result
|
|
*off = addr + additive;
|
|
}
|
|
|
|
void getEmuRW(void *pos, u32 size, u32 *readOff, u32 *writeOff){
|
|
//Look for read/write code
|
|
const unsigned char pattern[] = {0x1E, 0x00, 0xC8, 0x05};
|
|
|
|
*writeOff = (u32)memsearch(pos, pattern, size, 4) - 6;
|
|
*readOff = (u32)memsearch((void *)(*writeOff - 0x1000), pattern, 0x1000, 4) - 6;
|
|
}
|
|
|
|
void getMPU(void *pos, u32 *off, u32 size){
|
|
//Look for MPU pattern
|
|
const unsigned char pattern[] = {0x03, 0x00, 0x24, 0x00};
|
|
|
|
*off = (u32)memsearch(pos, pattern, size, 4);
|
|
} |