GodMode9/arm9/source/gamecart/gamecart.h

#pragma once

#include "common.h"
#include "card_spi.h"

#define CART_NONE   0
#define CART_CTR    (1<<0)
#define CART_NTR    (1<<1)
#define CART_TWL    (1<<2)

#define MODC_AREA_SIZE          0x4000
#define PRIV_HDR_SIZE           0x50

typedef enum CardSaveType {
    CARD_SAVE_NONE,
    CARD_SAVE_SPI,
    CARD_SAVE_CARD2,
    CARD_SAVE_RETAIL_NAND,
} CardSaveType;

typedef struct {
    u8  header[0x8000]; // NTR header + secure area / CTR header + private header
    u8  storage[0x8000]; // encrypted secure area + modcrypt area / unused
    u32 cart_type;
    u32 cart_id;
    u64 cart_size;
    u64 data_size;
    u32 save_size;
    CardSaveType save_type;
    CardSPIType spi_save_type; // Specific data for SPI save 
    u32 arm9i_rom_offset; // TWL specific
} PACKED_ALIGN(16) CartData;

u32 GetCartName(char* name, CartData* cdata);
u32 GetCartInfoString(char* info, size_t info_size, CartData* cdata);
u32 SetSecureAreaEncryption(bool encrypted);
u32 InitCartRead(CartData* cdata);
u32 ReadCartSectors(void* buffer, u32 sector, u32 count, CartData* cdata, bool card2_blanking);
u32 ReadCartBytes(void* buffer, u64 offset, u64 count, CartData* cdata, bool card2_blanking);
u32 ReadCartPrivateHeader(void* buffer, u64 offset, u64 count, CartData* cdata);
u32 ReadCartInfo(u8* buffer, u64 offset, u64 count, CartData* cdata);
u32 ReadCartSave(u8* buffer, u64 offset, u64 count, CartData* cdata);
u32 WriteCartSave(const u8* buffer, u64 offset, u64 count, CartData* cdata);