kernel/inc/drivers/builtin/fs/mbr.h

// This file is part of noxos and licensed under the MIT open source license

#ifndef NOXOS_MBR_H
#define NOXOS_MBR_H

#include "utils/stdtypes.h"
#include "utils/string.h"

typedef enum {
    MBR_PARTITION_TYPE_UNUSED    = 0x00,
    MBR_PARTITION_TYPE_GPT       = 0xEE,
    MBR_PARTITION_TYPE_EXT2      = 0x83,
    MBR_PARTITION_TYPE_FAT12     = 0x01,
    MBR_PARTITION_TYPE_FAT16     = 0x04,
    MBR_PARTITION_TYPE_FAT32_CHS = 0x0B,
    MBR_PARTITION_TYPE_FAT32_LBA = 0x0C
} mbr_partition_types_E;

typedef struct {
    uint8_t     boot_indicator;
    uint8_t     start_head;
    uint16_t    start_sector:6;
    uint16_t    start_cylinder:10;
    uint8_t     partition_type;
    uint8_t     end_head;
    uint16_t    end_sector:6;
    uint16_t    end_cylinder:10;
    uint32_t    start_lba;
    uint32_t    num_sectors;
}__attribute__((packed)) mbr_partition_header_T;

typedef struct {
    uint8_t                 bootstrap   [446];
    mbr_partition_header_T  partitions  [4];
    uint8_t                 signature   [2];
} mbr_header_T;

string_t mbr_partition_type_to_string(mbr_partition_types_E type);

#endif //NOXOS_MBR_H