#ifndef RK_FAT12_H_
#define RK_FAT12_H_

#include <stdint.h>

struct fat12_boot_sector {
    uint8_t  jump_boot[3];          // Jump instruction to boot code
    uint8_t  oem_name[8];           // OEM name and version
    uint16_t bytes_per_sector;      // Bytes per sector
    uint8_t  sectors_per_cluster;   // Sectors per cluster
    uint16_t reserved_sectors;      // Reserved sectors
    uint8_t  num_fats;              // Number of FATs
    uint16_t root_entry_count;      // Number of root directory entries
    uint16_t total_sectors_16;      // Total sectors (16-bit)
    uint8_t  media;                 // Media descriptor
    uint16_t fat_size_16;           // Sectors per FAT (16-bit)
    uint16_t sectors_per_track;     // Sectors per track (for BIOS)
    uint16_t num_heads;             // Number of heads (for BIOS)
    uint32_t hidden_sectors;        // Hidden sectors
    uint32_t total_sectors_32;      // Total sectors (32-bit)

    // Extended Boot Record (EBR) fields
    uint8_t  drive_number;          // Drive number
    uint8_t  reserved1;             // Reserved
    uint8_t  boot_signature;        // Extended boot signature
    uint32_t volume_id;             // Volume ID (serial number)
    uint8_t  volume_label[11];      // Volume label
    uint8_t  file_system_type[8];   // File system type (e.g., "FAT12   ")

    uint8_t  boot_code[448];        // Boot code
    uint16_t boot_sector_signature; // Boot sector signature (0xAA55)
} __attribute__((packed));

#endif