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GBA Memory: Properly initialize 1 Mb flash, and add debug logging 

Conflicts:
	CHANGES
This commit is contained in:
Jeffrey Pfau 2014-12-21 14:49:54 -08:00
parent ae36c716df
commit f2c08b7d75
3 changed files with 14 additions and 6 deletions
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1
CHANGES
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@ -9,6 +9,7 @@ Bugfixes:
- GBA BIOS: Fix BIOS prefetch after returning from a SWI
- Debugger: Negative PC-relative loads now properly subtract the offset
- Qt: Fix window focus issues
- GBA Memory: Properly initialize 1 Mb flash, and add debug logging
Misc:
- Qt: Disable sync to video by default
- GBA: Exit cleanly on FATAL if the port supports it

3
src/gba/gba-memory.c
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@ -223,7 +223,7 @@ static void GBASetActiveRegion(struct ARMCore* cpu, uint32_t address) {
#define LOAD_SRAM \
GBALog(gba, GBA_LOG_STUB, "Unimplemented memory Load32: 0x%08X", address); \
value = 0xDEADBEEF;
value = 0xFFFFFFFF;
int32_t GBALoad32(struct ARMCore* cpu, uint32_t address, int* cycleCounter) {
struct GBA* gba = (struct GBA*) cpu->master;
@ -353,6 +353,7 @@ int16_t GBALoad16(struct ARMCore* cpu, uint32_t address, int* cycleCounter) {
case REGION_CART_SRAM:
case REGION_CART_SRAM_MIRROR:
GBALog(gba, GBA_LOG_STUB, "Unimplemented memory Load16: 0x%08X", address);
value = 0xFFFF;
break;
default:
GBALog(gba, GBA_LOG_GAME_ERROR, "Bad memory Load16: 0x%08X", address);

16
src/gba/gba-savedata.c
View File

@ -117,6 +117,7 @@ void GBASavedataInitFlash(struct GBASavedata* savedata) {
GBALog(0, GBA_LOG_WARN, "Can't re-initialize savedata");
return;
}
size_t flashSize = SIZE_CART_FLASH512;
off_t end;
if (!savedata->vf) {
end = 0;
@ -125,13 +126,14 @@ void GBASavedataInitFlash(struct GBASavedata* savedata) {
end = savedata->vf->seek(savedata->vf, 0, SEEK_END);
if (end < SIZE_CART_FLASH512) {
savedata->vf->truncate(savedata->vf, SIZE_CART_FLASH1M);
flashSize = SIZE_CART_FLASH1M;
}
savedata->data = savedata->vf->map(savedata->vf, SIZE_CART_FLASH1M, savedata->mapMode);
}
savedata->currentBank = savedata->data;
if (end < SIZE_CART_FLASH512) {
memset(&savedata->data[end], 0xFF, SIZE_CART_FLASH512 - end);
memset(&savedata->data[end], 0xFF, flashSize - end);
}
}
@ -348,27 +350,31 @@ uint16_t GBASavedataReadEEPROM(struct GBASavedata* savedata) {
}
void _flashSwitchBank(struct GBASavedata* savedata, int bank) {
GBALog(0, GBA_LOG_DEBUG, "Performing flash bank switch to bank %i", bank);
savedata->currentBank = &savedata->data[bank << 16];
if (bank > 0) {
if (bank > 0 && savedata->type == SAVEDATA_FLASH512) {
savedata->type = SAVEDATA_FLASH1M;
if (savedata->vf) {
savedata->vf->truncate(savedata->vf, SIZE_CART_FLASH1M);
memset(&savedata->data[SIZE_CART_FLASH512], 0xFF, SIZE_CART_FLASH512);
}
}
}
void _flashErase(struct GBASavedata* savedata) {
size_t size = 0x10000;
GBALog(0, GBA_LOG_DEBUG, "Performing flash chip erase");
size_t size = SIZE_CART_FLASH512;
if (savedata->type == SAVEDATA_FLASH1M) {
size = 0x20000;
size = SIZE_CART_FLASH1M;
}
memset(savedata->data, 0xFF, size);
}
void _flashEraseSector(struct GBASavedata* savedata, uint16_t sectorStart) {
GBALog(0, GBA_LOG_DEBUG, "Performing flash sector erase at 0x%04x", sectorStart);
size_t size = 0x1000;
if (savedata->type == SAVEDATA_FLASH1M) {
GBALog(0, GBA_LOG_DEBUG, "Performing unknown sector-size erase at %#04x", sectorStart);
GBALog(0, GBA_LOG_DEBUG, "Performing unknown sector-size erase at 0x%04x", sectorStart);
}
memset(&savedata->currentBank[sectorStart & ~(size - 1)], 0xFF, size);
}