addons:
- GBAgame: add flash memory support. Pokemons migrate work now (need use external BIOS without SWI, I will fix it later) :)
This commit is contained in:
mtabachenko
parent
8e53ad6bd7
commit
7f418a40e0
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@ -29,12 +29,217 @@
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//SRAM is going to be stored just above the rom.
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//that is convenient for us, since it mirrors the nds memory map
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#define GBA_ROMSIZE (32 * 1024 * 1024) + 1
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#define GBA_SAVESIZE (512 * 1024) + 1
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static u8 *GBArom = NULL;
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static u8 *saveData = NULL;
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static u8 saveType = 0xFF;
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#define GBA_ROMSIZE (32 * 1024 * 1024)
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#define GBA_RAMSIZE (64 * 1024)
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#define GBA_SIZE (GBA_ROMSIZE+GBA_RAMSIZE)
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//================================================================================== Flash GBA
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typedef struct
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{
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u8 state;
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u8 cmd;
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u32 size;
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u8 idDevice;
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u8 idManufacturer;
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u8 bank;
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} FLASH_GBA;
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FLASH_GBA gbaFlash = {0};
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static void gbaWriteFlash(u32 adr, u8 val)
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{
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switch (gbaFlash.state)
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{
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case 0:
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if (adr == 0x0A005555)
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{
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if (val == 0xF0)
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{
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//INFO("GBAslot: Flash: reset\n");
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gbaFlash.state = 0;
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gbaFlash.cmd = 0;
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return;
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}
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if (val == 0xAA)
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{
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gbaFlash.state = 1;
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return;
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}
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}
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if (adr == 0x0A000000)
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{
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if (gbaFlash.cmd == 0xB0)
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{
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gbaFlash.bank = val;
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gbaFlash.cmd = 0;
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//INFO("GBAslot: Flash: change bank %i\n", val);
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return;
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}
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}
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break;
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case 1:
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if ( (adr == 0x0A002AAA) && (val == 0x55) )
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{
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gbaFlash.state = 2;
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return;
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}
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gbaFlash.state = 0;
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break;
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case 2:
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if (adr == 0x0A005555)
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{
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//INFO("GBAslot: Flash: send command flash 0x%02X\n", val);
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switch (val)
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{
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case 0x80: // Erase
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gbaFlash.state = 0x80;
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break;
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case 0xA0: // Write
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gbaFlash.state = 0;
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break;
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default:
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gbaFlash.state = 0;
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break;
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}
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gbaFlash.cmd = val;
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return;
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}
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gbaFlash.state = 0;
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break;
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// erase
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case 0x80:
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if ( (adr == 0x0A005555) && (val == 0xAA) )
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{
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gbaFlash.state = 0x81;
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return;
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}
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gbaFlash.state = 0;
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break;
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case 0x81:
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if ( (adr == 0x0A002AAA) && (val == 0x55) )
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{
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gbaFlash.state = 0x82;
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return;
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}
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gbaFlash.state = 0;
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break;
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case 0x82:
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if (val == 0x30)
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{
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u32 ofs = (adr & 0x0000F000);
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//INFO("GBAslot: Flash: erase from 0x%08X to 0x%08X\n", ofs + 0x0A000000, ofs + 0x0A001000);
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for (int i = ofs; i < (ofs + 0x1000); i++)
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saveData[i] = 0xFF;
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}
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gbaFlash.state = 0;
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gbaFlash.cmd = 0;
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return;
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}
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if (gbaFlash.cmd == 0xA0) // write
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{
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saveData[(adr & 0x1FFFF)+(0x10000*gbaFlash.bank)] = val;
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gbaFlash.state = 0;
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gbaFlash.cmd = 0;
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return;
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}
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//INFO("GBAslot: Flash: write unknown atn 0x%08X = 0x%02X\n", adr, val);
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}
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static u8 gbaReadFlash(u32 adr)
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{
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if (gbaFlash.cmd == 0)
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{
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//INFO("GBAslot: flash read at 0x%08X = 0x%02X\n", adr, saveData[(adr & 0x1FFFF)+(0x10000*gbaFlash.bank)]);
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return saveData[(adr & 0x1FFFF)+(0x10000*gbaFlash.bank)];
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}
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//INFO("GBAslot: flash read at 0x%08X\n", adr);
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switch (gbaFlash.cmd)
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{
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case 0x90: // Chip Identification
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if (adr == 0x0A000000) return gbaFlash.idManufacturer;
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if (adr == 0x0A000001) return gbaFlash.idDevice;
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break;
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case 0xF0: //
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//INFO("GBAslot: Flash: reset2\n");
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gbaFlash.state = 0;
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gbaFlash.cmd = 0;
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break;
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case 0xB0: // Bank switching
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break;
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default:
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INFO("GBAslot: Flash: read - unknown command at 0x%08X = 0x%02X\n", adr, gbaFlash.cmd);
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break;
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}
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return 0xFF;
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}
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//==================================================================================
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static u8 getSaveTypeGBA(const u8 *data, const u32 size)
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{
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u8 type = 0;
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u8 *dat = (u8 *)data;
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for (int i = 0; i < (size / 4); i++)
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{
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u32 tmp = T1ReadLong(dat, i);
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if (tmp == 0x52504545)
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{
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if(memcmp(dat, "EEPROM_", 7) == 0)
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{
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return 1;
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}
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}
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if (tmp == 0x4D415253)
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{
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if(memcmp(dat, "SRAM_", 5) == 0)
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{
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return 2;
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}
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}
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if (tmp == 0x53414C46)
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{
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if(memcmp(dat, "FLASH1M_", 8) == 0)
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{
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return 3;
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}
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}
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if (tmp == 0x52494953)
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{
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if(memcmp(dat, "SIIRTC_V", 8) == 0)
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{
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return 4;
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}
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}
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if(memcmp(dat, "FLASH", 5) == 0)
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{
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return 5;
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}
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dat += 4;
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}
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return 0xFF; // NONE
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}
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static BOOL GBAgame_init(void)
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{
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@ -43,20 +248,29 @@ static BOOL GBAgame_init(void)
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static void GBAgame_reset(void)
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{
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memset(&gbaFlash, 0, sizeof(gbaFlash));
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if (GBArom)
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{
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delete [] GBArom;
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GBArom = NULL;
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}
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GBArom = new u8 [GBA_SIZE];
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memset(GBArom, 0, GBA_SIZE);
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GBArom = new u8 [GBA_ROMSIZE];
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memset(GBArom, 0xFF, GBA_ROMSIZE);
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if (saveData)
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{
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delete [] saveData;
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saveData = NULL;
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}
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saveData = new u8 [GBA_SAVESIZE];
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memset(saveData, 0xFF, GBA_SAVESIZE);
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if (!strlen(GBAgameName)) return;
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FILE *fgame = 0;
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fgame = fopen(GBAgameName,"rb");
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if (!fgame) return;
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INFO("Loaded \"%s\" in GBA slot\n", GBAgameName);
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fseek(fgame, 0, SEEK_END);
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u32 size = ftell(fgame);
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rewind(fgame);
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@ -66,9 +280,11 @@ static void GBAgame_reset(void)
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fclose(fgame);
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return;
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}
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fclose(fgame);
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saveType = getSaveTypeGBA(GBArom, size);
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INFO("Loaded \"%s\" in GBA slot (save type %i)\n", GBAgameName, saveType);
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//try loading the sram
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char * dot = strrchr(GBAgameName,'.');
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if(!dot) return;
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@ -76,11 +292,32 @@ static void GBAgame_reset(void)
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sram_fname.resize(dot-GBAgameName);
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sram_fname += ".sav";
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fgame = fopen(sram_fname.c_str(),"rb");
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if(fgame)
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if(!fgame) return;
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fseek(fgame, 0, SEEK_END);
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size = ftell(fgame);
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rewind(fgame);
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if (!fread(saveData, 1, size, fgame))
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{
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fread(GBArom+GBA_ROMSIZE,1,GBA_RAMSIZE,fgame);
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fclose(fgame);
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return;
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}
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fclose(fgame);
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gbaFlash.size = size;
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if (gbaFlash.size <= (64 * 1024))
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{
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gbaFlash.idDevice = 0x1B;
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gbaFlash.idManufacturer = 0x32;
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}
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else
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{
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gbaFlash.idDevice = 0x09;
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gbaFlash.idManufacturer = 0xC2;
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}
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INFO("Loaded save \"%s\" in GBA slot\n", sram_fname.c_str());
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}
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static void GBAgame_close(void)
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@ -90,35 +327,109 @@ static void GBAgame_close(void)
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delete [] GBArom;
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GBArom = NULL;
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}
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if (saveData)
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{
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delete [] saveData;
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saveData = NULL;
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}
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}
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static void GBAgame_config(void) {}
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static void GBAgame_write08(u32 adr, u8 val){}
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static void GBAgame_write16(u32 adr, u16 val) {}
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static void GBAgame_write32(u32 adr, u32 val) {}
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static void GBAgame_write08(u32 adr, u8 val)
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{
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//INFO("GBAslot: write08 at 0x%08X val=0x%02X\n", adr, val);
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if ( (adr >= 0x0A000000) && (adr < 0x0A010000) )
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{
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switch (saveType)
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{
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case 3: // Flash
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case 5:
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gbaWriteFlash(adr, val);
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break;
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default:
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break;
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}
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//return (u8)T1ReadByte(saveData, (adr - 0x0A000000));
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}
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}
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static void GBAgame_write16(u32 adr, u16 val)
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{
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//INFO("GBAgame: write16 at 0x%08X val=0x%04X\n", adr, val);
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}
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static void GBAgame_write32(u32 adr, u32 val)
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{
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//INFO("GBAgame: write32 at 0x%08X val=0x%08X\n", adr, val);
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}
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static u8 GBAgame_read08(u32 adr)
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{
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//INFO("Read08 at 0x%08X value 0x%02X\n", adr, (u8)T1ReadByte(GBArom, (adr - 0x08000000)));
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if ( (adr >= 0x08000004) && (adr < 0x080000A0) )
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return MMU.MMU_MEM[0][0xFF][(adr +0x1C) & MMU.MMU_MASK[0][0xFF]];
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//INFO("GBAgame: read08 at 0x%08X value 0x%02X\n", adr, (u8)T1ReadByte(GBArom, (adr - 0x08000000)));
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if (adr < 0x0A000000)
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return (u8)T1ReadByte(GBArom, (adr - 0x08000000));
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if (adr < 0x0A010000)
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{
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switch (saveType)
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{
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case 3: // Flash
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case 5:
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return gbaReadFlash(adr);
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default:
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break;
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}
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//INFO("Read08 at 0x%08X val=0x%08X\n", adr, (u8)T1ReadByte(GBArom, (adr - 0x08000000)) );
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return (u8)T1ReadByte(saveData, (adr - 0x0A000000));
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}
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//INFO("Read08 at 0x%08X val=0x%08X\n", adr, (u8)T1ReadByte(GBArom, (adr - 0x08000000)) );
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return 0xFF;
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}
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static u16 GBAgame_read16(u32 adr)
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{
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//INFO("Read16 at 0x%08X value 0x%04X\n", adr, (u16)T1ReadWord(GBArom, (adr - 0x08000000)));
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if ( (adr >= 0x08000004) && (adr < 0x080000A0) )
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return T1ReadWord(MMU.MMU_MEM[0][0xFF], (adr +0x1C) & MMU.MMU_MASK[0][0xFF]);
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//INFO("GBAgame: read16 at 0x%08X value 0x%04X\n", adr, (u16)T1ReadWord(GBArom, (adr - 0x08000000)));
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if (adr < 0x0A000000)
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return (u16)T1ReadWord(GBArom, (adr - 0x08000000));
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if (adr < 0x0A010000)
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{
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//INFO("GBAslot: flash read16 at 0x%08X\n", adr);
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return (u16)T1ReadWord(saveData, (adr - 0x0A000000));
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}
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return 0xFFFF;
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}
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static u32 GBAgame_read32(u32 adr)
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{
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//INFO("Read32 at 0x%08X value 0x%08X\n", adr, (u32)T1ReadLong(GBArom, (adr - 0x08000000)));
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if ( (adr >= 0x08000004) && (adr < 0x080000A0) )
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return T1ReadLong(MMU.MMU_MEM[0][0xFF], (adr +0x1C) & MMU.MMU_MASK[0][0xFF]);
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//INFO("GBAgame: read32 at 0x%08X value 0x%08X\n", adr, (u32)T1ReadLong(GBArom, (adr - 0x08000000)));
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if (adr < 0x0A000000)
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return (u32)T1ReadLong(GBArom, (adr - 0x08000000));
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if (adr < 0x0A010000)
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{
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//INFO("GBAslot: flash read32 at 0x%08X\n", adr);
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return (u32)T1ReadLong(saveData, (adr - 0x0A000000));
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}
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return 0xFFFFFFFF;
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}
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static void GBAgame_info(char *info)
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