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Low-level DiskIO: Additional improvements

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d0k3 2016-02-27 14:13:04 +01:00
parent 905267e0e5
commit e586a65152
1 changed files with 15 additions and 10 deletions
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25
source/fatfs/diskio.c
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@ -30,6 +30,7 @@ typedef struct {
typedef struct {
DWORD offset;
DWORD size;
DWORD mode;
BYTE keyslot;
} SubtypeDesc;
@ -69,10 +70,10 @@ FATpartition DriveInfo[31] = {
};
SubtypeDesc SubTypes[4] = {
{ 0x05CAE5, AES_CNT_CTRNAND_MODE, 0x4 }, // O3DS CTRNAND
{ 0x05CAD7, AES_CNT_CTRNAND_MODE, 0x5 }, // N3DS CTRNAND
{ 0x000097, AES_CNT_TWLNAND_MODE, 0x3 }, // TWLN
{ 0x04808D, AES_CNT_TWLNAND_MODE, 0x3 } // TWLP
{ 0x05CAE5, 0x179F1B, AES_CNT_CTRNAND_MODE, 0x4 }, // O3DS CTRNAND
{ 0x05CAD7, 0x20E969, AES_CNT_CTRNAND_MODE, 0x5 }, // N3DS CTRNAND
{ 0x000097, 0x047DA9, AES_CNT_TWLNAND_MODE, 0x3 }, // TWLN
{ 0x04808D, 0x0105B3, AES_CNT_TWLNAND_MODE, 0x3 } // TWLP
};
static bool mode_n3ds = false;
@ -84,7 +85,6 @@ static bool mode_n3ds = false;
u32 GetNandCtr(u8* ctr, u32 sector)
{
// static const char* versions[] = {"4.x", "5.x", "6.x", "7.x", "8.x", "9.x"};
static const u8* version_ctrs[] = {
(u8*)0x080D7CAC,
(u8*)0x080D858C,
@ -199,7 +199,8 @@ DRESULT disk_read (
return RES_PARERR;
}
GetNandCtr(ctr, isector);
if (GetNandCtr(ctr, isector) != 0)
return RES_PARERR;
use_aeskey(SubTypes[subtype].keyslot);
for (UINT s = 0; s < count; s++) {
for (UINT b = 0x0; b < 0x200; b += 0x10, buff += 0x10) {
@ -241,7 +242,8 @@ DRESULT disk_write (
DWORD mode = SubTypes[subtype].mode;
BYTE ctr[16] __attribute__((aligned(32)));
GetNandCtr(ctr, isector);
if (GetNandCtr(ctr, isector) != 0)
return RES_PARERR;
use_aeskey(SubTypes[subtype].keyslot);
for (UINT s = 0; s < count; s++) {
for (UINT b = 0x0; b < 0x200; b += 0x10, buff += 0x10) {
@ -288,16 +290,19 @@ DRESULT disk_ioctl (
*((DWORD*) buff) = 0x200;
return RES_OK;
case GET_SECTOR_COUNT:
*((DWORD*) buff) = getMMCDevice((DriveInfo[pdrv].type == TYPE_SDCARD) ? 1 : 0)->total_size;
if (DriveInfo[pdrv].type == TYPE_SDCARD) {
*((DWORD*) buff) = getMMCDevice(1)->total_size;
} else {
*((DWORD*) buff) = SubTypes[DriveInfo[pdrv].subtype].size;
}
return RES_OK;
case GET_BLOCK_SIZE:
*((DWORD*) buff) = 0x2000;
// return (DriveInfo[pdrv].type == TYPE_SDCARD) ? RES_OK : RES_PARERR;
return RES_OK;
case CTRL_SYNC:
// nothing to do here - the disk_write function handles that
return RES_OK;
}
return RES_OK;
return RES_PARERR;
}
#endif