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129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
/* Copyright (c) 2013-2015 Jeffrey Pfau
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GBA_SAVEDATA_H
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#define GBA_SAVEDATA_H
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#include <mgba-util/common.h>
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CXX_GUARD_START
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#include <mgba/core/log.h>
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#include <mgba/core/timing.h>
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mLOG_DECLARE_CATEGORY(GBA_SAVE);
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struct VFile;
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enum SavedataType {
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SAVEDATA_AUTODETECT = -1,
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SAVEDATA_FORCE_NONE = 0,
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SAVEDATA_SRAM = 1,
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SAVEDATA_FLASH512 = 2,
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SAVEDATA_FLASH1M = 3,
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SAVEDATA_EEPROM = 4,
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SAVEDATA_EEPROM512 = 5
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};
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enum SavedataCommand {
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EEPROM_COMMAND_NULL = 0,
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EEPROM_COMMAND_PENDING = 1,
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EEPROM_COMMAND_WRITE = 2,
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EEPROM_COMMAND_READ_PENDING = 3,
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EEPROM_COMMAND_READ = 4,
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FLASH_COMMAND_START = 0xAA,
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FLASH_COMMAND_CONTINUE = 0x55,
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FLASH_COMMAND_ERASE_CHIP = 0x10,
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FLASH_COMMAND_ERASE_SECTOR = 0x30,
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FLASH_COMMAND_NONE = 0,
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FLASH_COMMAND_ERASE = 0x80,
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FLASH_COMMAND_ID = 0x90,
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FLASH_COMMAND_PROGRAM = 0xA0,
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FLASH_COMMAND_SWITCH_BANK = 0xB0,
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FLASH_COMMAND_TERMINATE = 0xF0
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};
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enum FlashStateMachine {
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FLASH_STATE_RAW = 0,
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FLASH_STATE_START = 1,
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FLASH_STATE_CONTINUE = 2,
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};
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enum FlashManufacturer {
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FLASH_MFG_PANASONIC = 0x1B32,
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FLASH_MFG_SANYO = 0x1362
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};
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enum SavedataDirty {
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SAVEDATA_DIRT_NEW = 1,
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SAVEDATA_DIRT_SEEN = 2
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};
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enum {
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SAVEDATA_FLASH_BASE = 0x0E005555,
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FLASH_BASE_HI = 0x5555,
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FLASH_BASE_LO = 0x2AAA
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};
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struct GBASavedata {
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enum SavedataType type;
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uint8_t* data;
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enum SavedataCommand command;
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struct VFile* vf;
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int mapMode;
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bool maskWriteback;
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struct VFile* realVf;
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int8_t readBitsRemaining;
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uint32_t readAddress;
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uint32_t writeAddress;
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uint8_t* currentBank;
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struct mTiming* timing;
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unsigned settling;
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struct mTimingEvent dust;
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enum SavedataDirty dirty;
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uint32_t dirtAge;
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enum FlashStateMachine flashState;
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};
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void GBASavedataInit(struct GBASavedata* savedata, struct VFile* vf);
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void GBASavedataDeinit(struct GBASavedata* savedata);
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void GBASavedataMask(struct GBASavedata* savedata, struct VFile* vf, bool writeback);
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void GBASavedataUnmask(struct GBASavedata* savedata);
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size_t GBASavedataSize(const struct GBASavedata* savedata);
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bool GBASavedataClone(struct GBASavedata* savedata, struct VFile* out);
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bool GBASavedataLoad(struct GBASavedata* savedata, struct VFile* in);
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void GBASavedataForceType(struct GBASavedata* savedata, enum SavedataType type);
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void GBASavedataInitFlash(struct GBASavedata* savedata);
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void GBASavedataInitEEPROM(struct GBASavedata* savedata);
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void GBASavedataInitSRAM(struct GBASavedata* savedata);
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uint8_t GBASavedataReadFlash(struct GBASavedata* savedata, uint16_t address);
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void GBASavedataWriteFlash(struct GBASavedata* savedata, uint16_t address, uint8_t value);
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uint16_t GBASavedataReadEEPROM(struct GBASavedata* savedata);
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void GBASavedataWriteEEPROM(struct GBASavedata* savedata, uint16_t value, uint32_t writeSize);
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void GBASavedataClean(struct GBASavedata* savedata, uint32_t frameCount);
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struct GBASerializedState;
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void GBASavedataSerialize(const struct GBASavedata* savedata, struct GBASerializedState* state);
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void GBASavedataDeserialize(struct GBASavedata* savedata, const struct GBASerializedState* state);
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CXX_GUARD_END
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#endif
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