133 lines
4.2 KiB
C
133 lines
4.2 KiB
C
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-05-05 linzhenxing first version
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*/
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#ifndef __GPT_H
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#define __GPT_H
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#include <rtthread.h>
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#include <stdint.h>
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typedef struct
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{
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uint8_t b[16]; /* GUID 16 bytes*/
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} guid_t;
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#define MSDOS_MBR_SIGNATURE 0xaa55
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#define EFI_PMBR_OSTYPE_EFI 0xEF
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#define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
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#define GPT_MBR_PROTECTIVE 1
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#define GPT_MBR_HYBRID 2
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#define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
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#define GPT_HEADER_REVISION_V1 0x00010000
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#define GPT_PRIMARY_PARTITION_TABLE_LBA 1
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typedef guid_t gpt_guid_t __attribute__ ((aligned (4)));
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#define EFI_GUID(a, b, c, d...) (gpt_guid_t){ { \
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(a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
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(b) & 0xff, ((b) >> 8) & 0xff, \
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(c) & 0xff, ((c) >> 8) & 0xff, d } }
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#define NULL_GUID \
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EFI_GUID(0x00000000, 0x0000, 0x0000,\
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
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#define PARTITION_SYSTEM_GUID \
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EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
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0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
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#define LEGACY_MBR_PARTITION_GUID \
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EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
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0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
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#define PARTITION_MSFT_RESERVED_GUID \
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EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
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0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
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#define PARTITION_BASIC_DATA_GUID \
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EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
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0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
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#define PARTITION_LINUX_RAID_GUID \
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EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
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0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
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#define PARTITION_LINUX_SWAP_GUID \
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EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
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0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
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#define PARTITION_LINUX_LVM_GUID \
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EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
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0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
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#pragma pack(push, 1)
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typedef struct _gpt_header
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{
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uint64_t signature;
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uint32_t revision;
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uint32_t header_size;
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uint32_t header_crc32;
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uint32_t reserved1;
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uint64_t start_lba; /*GPT head start sector*/
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uint64_t alternate_lba; /*GPT head alternate sector*/
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uint64_t first_usable_lba;
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uint64_t last_usable_lba;
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gpt_guid_t disk_guid;
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uint64_t partition_entry_lba;
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uint32_t num_partition_entries;
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uint32_t sizeof_partition_entry;
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uint32_t partition_entry_array_crc32;
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/* The rest of the logical block is reserved by UEFI and must be zero.
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* EFI standard handles this by:
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*
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* uint8_t reserved2[ BlockSize - 92 ];
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*/
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} gpt_header;
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typedef struct _gpt_entry_attributes
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{
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uint64_t required_to_function:1;
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uint64_t reserved:47;
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uint64_t type_guid_specific:16;
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} gpt_entry_attributes;
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typedef struct _gpt_entry
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{
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gpt_guid_t partition_type_guid;
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gpt_guid_t unique_partition_guid;
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uint64_t starting_lba;
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uint64_t ending_lba;
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gpt_entry_attributes attributes;
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uint16_t partition_name[72/sizeof(uint16_t)];
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} gpt_entry;
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typedef struct _gpt_mbr_record
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{
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uint8_t boot_indicator; /* unused by EFI, set to 0x80 for bootable */
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uint8_t start_head; /* unused by EFI, pt start in CHS */
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uint8_t start_sector; /* unused by EFI, pt start in CHS */
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uint8_t start_track;
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uint8_t os_type; /* EFI and legacy non-EFI OS types */
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uint8_t end_head; /* unused by EFI, pt end in CHS */
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uint8_t end_sector; /* unused by EFI, pt end in CHS */
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uint8_t end_track; /* unused by EFI, pt end in CHS */
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uint32_t starting_lba; /* used by EFI - start addr of the on disk pt */
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uint32_t size_in_lba; /* used by EFI - size of pt in LBA */
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} gpt_mbr_record;
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typedef struct _legacy_mbr
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{
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uint8_t boot_code[440];
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uint32_t unique_mbr_signature;
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uint16_t unknown;
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gpt_mbr_record partition_record[4];
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uint16_t signature;
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} legacy_mbr;
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#pragma pack(pop)
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int check_gpt(struct rt_mmcsd_card *card);
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int gpt_get_partition_param(struct rt_mmcsd_card *card, struct dfs_partition *part, uint32_t pindex);
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void gpt_free(void);
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#endif /*__GPT_H*/
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