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Add read support for CTR cartridge saves

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I have done nothing, however, to decrypt them. There is also no write
support.
This commit is contained in:
Balint Kovacs 2019-07-12 14:49:50 +02:00 committed by d0k3
parent f60a4c1f63
commit 7b0a101f13
2 changed files with 29 additions and 9 deletions
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19
arm9/source/gamecart/spi.c
View File

@ -95,11 +95,12 @@ u32 SPIGetPageSize(CardType type) {
u32 EEPROMSizes[] = { 16, 32, 128, 256 };
if(type == NO_CHIP || type > CHIP_LAST) return 0;
else if(type < FLASH_256KB_1) return EEPROMSizes[(int) type];
else return 256;
else if(type < FLASH_64KB_CTR ) return 256;
else return 0; // TODO
}
u32 SPIGetCapacity(CardType type) {
u32 sz[] = { 9, 13, 16, 17, 18, 18, 19, 19, 20, 23, 19, 19 };
u32 sz[] = { 9, 13, 16, 17, 18, 18, 19, 19, 20, 23, 16, 17, 18, 19, 20, 21, 22, 23, 19, 18 };
if(type == NO_CHIP || type > CHIP_LAST) return 0;
else return 1 << sz[(int) type];
@ -251,6 +252,14 @@ int SPIReadSaveData(CardType type, u32 offset, void* data, u32 size) {
case FLASH_8MB:
case FLASH_512KB_INFRARED:
case FLASH_256KB_INFRARED:
case FLASH_64KB_CTR:
case FLASH_128KB_CTR:
case FLASH_256KB_CTR:
case FLASH_512KB_CTR:
case FLASH_1MB_CTR:
case FLASH_2MB_CTR:
case FLASH_4MB_CTR:
case FLASH_8MB_CTR:
cmdSize = 4;
cmd[1] = (u8)(pos >> 16);
cmd[2] = (u8)(pos >> 8);
@ -346,7 +355,7 @@ int SPIGetCardType(CardType* type, int infrared) {
u32 tries = 0;
CardType t = (infrared == 1) ? FLASH_INFRARED_DUMMY : FLASH_STD_DUMMY;
int res;
u32 jedecOrderedList[] = { 0x204012, 0x621600, 0x204013, 0x621100, 0x204014, 0x202017};
u32 jedecOrderedList[] = { 0x204012, 0x621600, 0x204013, 0x621100, 0x204014, 0x202017, 0xC22210, 0xC22211, 0xC22212, 0xC22213, 0xC22214, 0xC22215, 0xC22216, 0xC22217 };
u32 maxTries = (infrared == -1) ? 2 : 1; // note: infrared = -1 fails 1/3 of the time
while(tries < maxTries){
@ -390,9 +399,9 @@ int SPIGetCardType(CardType* type, int infrared) {
if(infrared == 1) *type = NO_CHIP; // did anything go wrong?
if(jedec == 0x204017) { *type = FLASH_8MB; return 0; } // 8MB. savegame-manager: which one? (more work is required to unlock this save chip!)
int i;
size_t i;
for(i = 0; i < 6; ++i) {
for(i = 0; i < sizeof(jedecOrderedList) / sizeof(int); ++i) {
if(jedec == jedecOrderedList[i]) { *type = (CardType)((int) FLASH_256KB_1 + i); return 0; }
}

19
arm9/source/gamecart/spi.h
View File

@ -63,11 +63,22 @@ typedef enum {
FLASH_8MB = 9, // <- can't restore savegames, and maybe not read them atm
FLASH_STD_DUMMY = 4,
FLASH_512KB_INFRARED = 10,
FLASH_256KB_INFRARED = 11, // AFAIK, only "Active Health with Carol Vorderman" has such a flash save memory
FLASH_INFRARED_DUMMY = 9,
FLASH_64KB_CTR = 10, // I am extrapolating from the dataheets, only a few of these have been observed in the wild
FLASH_128KB_CTR = 11, // Most common, including Ocarina of time 3D
FLASH_256KB_CTR = 12,
FLASH_512KB_CTR = 13, // Also common, including Detective Pikachu
FLASH_1MB_CTR = 14, // For example Pokemon Ultra Sun
FLASH_2MB_CTR = 15,
FLASH_4MB_CTR = 16,
FLASH_8MB_CTR = 17,
// Animal crossing: New leaf???
// (What is that? 3dbrew states 10M, but Macronix only makes powers of 2)
FLASH_512KB_INFRARED = 18,
FLASH_256KB_INFRARED = 19, // AFAIK, only "Active Health with Carol Vorderman" has such a flash save memory
FLASH_INFRARED_DUMMY = 17,
CHIP_LAST = 11,
CHIP_LAST = 19,
} CardType;
int SPIWriteRead(CardType type, void* cmd, u32 cmdSize, void* answer, u32 answerSize, void* data, u32 dataSize);