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108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
#ifndef GUARD_SAVE_H
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#define GUARD_SAVE_H
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#include "global.h"
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// Each 4 KiB flash sector contains 3968 bytes of actual data followed by a 128 byte footer.
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// Only 12 bytes of the footer are used.
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#define SECTOR_DATA_SIZE 3968
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#define SECTOR_FOOTER_SIZE 128
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#define SECTOR_SIZE (SECTOR_DATA_SIZE + SECTOR_FOOTER_SIZE)
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#define NUM_SAVE_SLOTS 2
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// If the sector's signature field is not this value then the sector is either invalid or empty.
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#define SECTOR_SIGNATURE 0x08012025
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#define SPECIAL_SECTOR_SENTINEL 0xB39D
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#define SECTOR_ID_SAVEBLOCK2 0
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#define SECTOR_ID_SAVEBLOCK1_START 1
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#define SECTOR_ID_SAVEBLOCK1_END 4
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#define SECTOR_ID_PKMN_STORAGE_START 5
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#define SECTOR_ID_PKMN_STORAGE_END 13
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#define NUM_SECTORS_PER_SLOT 14
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// Save Slot 1: 0-13; Save Slot 2: 14-27
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#define SECTOR_ID_HOF_1 28
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#define SECTOR_ID_HOF_2 29
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#define SECTOR_ID_TRAINER_TOWER_1 30
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#define SECTOR_ID_TRAINER_TOWER_2 31
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#define SECTORS_COUNT 32
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#define NUM_HOF_SECTORS 2
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#define SAVE_STATUS_EMPTY 0
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#define SAVE_STATUS_OK 1
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#define SAVE_STATUS_INVALID 2
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#define SAVE_STATUS_NO_FLASH 4
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#define SAVE_STATUS_ERROR 0xFF
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// Special sector id value for certain save functions
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// to indicate that all sectors should be used
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// instead of a specific sector.
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#define FULL_SAVE_SLOT 0xFFFF
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enum
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{
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SAVE_NORMAL,
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SAVE_LINK,
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SAVE_EREADER,
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SAVE_HALL_OF_FAME,
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SAVE_OVERWRITE_DIFFERENT_FILE,
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SAVE_HALL_OF_FAME_ERASE_BEFORE, // unused
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};
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// A save sector location holds a pointer to the data for a particular sector
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// and the size of that data. Size cannot be greater than SECTOR_DATA_SIZE.
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struct SaveSectorLocation
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{
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u8 *data;
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u16 size;
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};
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struct SaveSector
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{
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u8 data[SECTOR_DATA_SIZE];
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u8 unused[SECTOR_FOOTER_SIZE - 12]; // Unused portion of the footer
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u16 id;
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u16 checksum;
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u32 signature;
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u32 counter;
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}; // size is SECTOR_SIZE (0x1000)
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#define SECTOR_SIGNATURE_OFFSET offsetof(struct SaveSector, signature)
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#define SECTOR_COUNTER_OFFSET offsetof(struct SaveSector, counter)
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// operations for SetDamagedSectorBits
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enum
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{
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ENABLE,
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DISABLE,
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CHECK // unused
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};
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extern u32 gDamagedSaveSectors;
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extern struct SaveSector *gSaveDataBufferPtr; // the pointer is in fast IWRAM but points to the slower EWRAM.
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extern u16 gSaveFileStatus;
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extern void (*gGameContinueCallback)(void);
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extern u16 gSaveAttemptStatus;
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extern struct SaveSector gSaveDataBuffer;
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void ClearSaveData(void);
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void Save_ResetSaveCounters(void);
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u8 HandleSavingData(u8 saveType);
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u8 TrySavingData(u8 saveType);
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bool8 LinkFullSave_Init(void);
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bool8 LinkFullSave_WriteSector(void);
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bool8 LinkFullSave_ReplaceLastSector(void);
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bool8 LinkFullSave_SetLastSectorSignature(void);
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bool8 WriteSaveBlock2(void);
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bool8 WriteSaveBlock1Sector(void);
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u8 LoadGameSave(u8 saveType);
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u32 TryReadSpecialSaveSector(u8 sector, u8 *dst);
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u32 TryWriteSpecialSaveSector(u8 sector, u8 *src);
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void Task_LinkFullSave(u8 taskId);
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#endif // GUARD_SAVE_H
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