piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-27 00:00:07 -06:00
Code Issues Packages Projects Releases Wiki Activity

actually patch TSC shit

Browse Source
This commit is contained in:
Arisotura
2021-08-12 18:37:58 +02:00
parent 50500cfd49
commit 41f41c21f5
1 changed files with 83 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

119
src/DSi_NAND.cpp
View File

@ -96,10 +96,6 @@ u32 ReadFATBlock(u64 addr, u32 len, u8* buf)
for (u32 i = 0; i < len; i += 16) for (u32 i = 0; i < len; i += 16)
{ {
//printf("BLOCK %d: IV=", i);
//for (int k = 0; k < 16; k++) printf("%02X:", ctx.Iv[k]);
//printf("\n");
u8 tmp[16]; u8 tmp[16];
DSi_AES::Swap16(tmp, &buf[i]); DSi_AES::Swap16(tmp, &buf[i]);
AES_CTR_xcrypt_buffer(&ctx, tmp, 16); AES_CTR_xcrypt_buffer(&ctx, tmp, 16);
@ -109,11 +105,37 @@ u32 ReadFATBlock(u64 addr, u32 len, u8* buf)
return len; return len;
} }
u32 WriteFATBlock(u64 addr, u32 len, u8* buf)
{
u32 ctr = (u32)(addr >> 4);
AES_ctx ctx;
SetupFATCrypto(&ctx, ctr);
fseek(DSi::SDMMCFile, addr, SEEK_SET);
for (u32 s = 0; s < len; s += 0x200)
{
u8 tempbuf[0x200];
for (u32 i = 0; i < 0x200; i += 16)
{
u8 tmp[16];
DSi_AES::Swap16(tmp, &buf[s+i]);
AES_CTR_xcrypt_buffer(&ctx, tmp, 16);
DSi_AES::Swap16(&tempbuf[i], tmp);
}
u32 res = fwrite(tempbuf, len, 1, DSi::SDMMCFile);
if (!res) return 0;
}
return len;
}
UINT FF_ReadNAND(BYTE* buf, LBA_t sector, UINT num) UINT FF_ReadNAND(BYTE* buf, LBA_t sector, UINT num)
{ {
printf("READ %08X %08X\n", sector, num);
// TODO: allow selecting other partitions? // TODO: allow selecting other partitions?
u64 baseaddr = 0x10EE00; u64 baseaddr = 0x10EE00;
@ -125,49 +147,72 @@ UINT FF_ReadNAND(BYTE* buf, LBA_t sector, UINT num)
UINT FF_WriteNAND(BYTE* buf, LBA_t sector, UINT num) UINT FF_WriteNAND(BYTE* buf, LBA_t sector, UINT num)
{ {
// TODO! // TODO: allow selecting other partitions?
printf("!! WRITE %08X %08X\n", sector, num); u64 baseaddr = 0x10EE00;
return 0;
u64 blockaddr = baseaddr + (sector * 0x200ULL);
u32 res = WriteFATBlock(blockaddr, num*0x200, buf);
return res >> 9;
} }
void PatchTSC() void PatchTSC()
{ {
// TEST ZONE
u8 dorp[0x200];
ReadFATBlock(0, 0x200, dorp);
for (int i = 0; i < 0x200; i+=16)
{
for (int j = 0; j < 16; j++)
{
printf("%02X ", dorp[i+j]);
}
printf("\n");
}
ReadFATBlock(0x0010EE00, 0x200, dorp);
printf("FUKA\n");
for (int i = 0; i < 0x200; i+=16)
{
for (int j = 0; j < 16; j++)
{
printf("%02X ", dorp[i+j]);
}
printf("\n");
}
ff_disk_open(FF_ReadNAND, FF_WriteNAND); ff_disk_open(FF_ReadNAND, FF_WriteNAND);
FRESULT res; FRESULT res;
FATFS fs; FATFS fs;
res = f_mount(&fs, "0:", 0); res = f_mount(&fs, "0:", 0);
printf("mount=%d\n", res); if (res != FR_OK)
{
printf("NAND mounting failed: %d\n", res);
goto mount_fail;
}
for (int i = 0; i < 2; i++)
{
char filename[64];
sprintf(filename, "0:/shared1/TWLCFG%d.dat", i);
FIL file; FIL file;
res = f_open(&file, "0:/shared1/TWLCFG0.dat", FA_READ); res = f_open(&file, filename, FA_OPEN_EXISTING | FA_READ | FA_WRITE);
printf("blarg=%d\n", res); if (res != FR_OK)
{
printf("NAND: editing file %s failed: %d\n", filename, res);
continue;
}
u8 contents[0x1B0];
u32 nres;
f_lseek(&file, 0);
f_read(&file, contents, 0x1B0, &nres);
// fix touchscreen coords
*(u16*)&contents[0xB8] = 0;
*(u16*)&contents[0xBA] = 0;
contents[0xBC] = 0;
contents[0xBD] = 0;
*(u16*)&contents[0xBE] = 255<<4;
*(u16*)&contents[0xC0] = 191<<4;
contents[0xC2] = 255;
contents[0xC3] = 191;
SHA1_CTX sha;
u8 datahash[20];
SHA1Init(&sha);
SHA1Update(&sha, &contents[0x88], 0x128);
SHA1Final(&contents[0], &sha);
f_lseek(&file, 0);
f_write(&file, contents, 0x1B0, &nres);
f_close(&file);
}
mount_fail:
f_unmount("0:");
ff_disk_close();
} }
} }