142 lines
4.2 KiB
C
142 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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* 2023-02-25 GuEe-GUI make blk interface
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*/
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#ifndef __PARTITIONS_EFI_H__
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#define __PARTITIONS_EFI_H__
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#include "../blk_partition.h"
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#include <drivers/misc.h>
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#include <drivers/byteorder.h>
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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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#ifndef __UUID_H__
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#define UUID_SIZE 16
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typedef struct
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{
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rt_uint8_t b[UUID_SIZE];
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} guid_t;
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#endif /* __UUID_H__ */
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#ifndef __EFI_H__
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typedef guid_t efi_guid_t rt_align(4);
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#define EFI_GUID(a, b, c, d...) (efi_guid_t) \
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{{ \
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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, \
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d \
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}}
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#define NULL_GUID \
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EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
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rt_inline int efi_guidcmp(efi_guid_t left, efi_guid_t right)
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{
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return rt_memcmp(&left, &right, sizeof (efi_guid_t));
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}
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#endif /* __EFI_H__ */
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#define PARTITION_SYSTEM_GUID \
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EFI_GUID(0xc12a7328, 0xf81f, 0x11d2, 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, 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, 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, 0x87, 0xc0, 0x68, 0xb6, 0xb7, 0x26, 0x99, 0xc7)
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rt_packed(struct _gpt_header
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{
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rt_le64_t signature;
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rt_le32_t revision;
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rt_le32_t header_size;
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rt_le32_t header_crc32;
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rt_le32_t reserved1;
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rt_le64_t start_lba;
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rt_le64_t alternate_lba;
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rt_le64_t first_usable_lba;
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rt_le64_t last_usable_lba;
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efi_guid_t disk_guid;
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rt_le64_t partition_entry_lba;
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rt_le32_t num_partition_entries;
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rt_le32_t sizeof_partition_entry;
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rt_le32_t partition_entry_array_crc32;
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/*
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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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});
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typedef struct _gpt_header gpt_header;
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rt_packed(struct _gpt_entry_attributes
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{
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rt_uint64_t required_to_function:1;
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rt_uint64_t reserved:47;
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rt_uint64_t type_guid_specific:16;
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});
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typedef struct _gpt_entry_attributes gpt_entry_attributes;
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rt_packed(struct _gpt_entry
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{
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efi_guid_t partition_type_guid;
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efi_guid_t unique_partition_guid;
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rt_le64_t starting_lba;
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rt_le64_t ending_lba;
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gpt_entry_attributes attributes;
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rt_le16_t partition_name[72/sizeof(rt_le16_t)];
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});
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typedef struct _gpt_entry gpt_entry;
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rt_packed(struct _gpt_mbr_record
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{
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rt_uint8_t boot_indicator; /* unused by EFI, set to 0x80 for bootable */
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rt_uint8_t start_head; /* unused by EFI, pt start in CHS */
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rt_uint8_t start_sector; /* unused by EFI, pt start in CHS */
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rt_uint8_t start_track;
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rt_uint8_t os_type; /* EFI and legacy non-EFI OS types */
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rt_uint8_t end_head; /* unused by EFI, pt end in CHS */
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rt_uint8_t end_sector; /* unused by EFI, pt end in CHS */
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rt_uint8_t end_track; /* unused by EFI, pt end in CHS */
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rt_le32_t starting_lba; /* used by EFI - start addr of the on disk pt */
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rt_le32_t size_in_lba; /* used by EFI - size of pt in LBA */
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});
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typedef struct _gpt_mbr_record gpt_mbr_record;
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rt_packed(struct _legacy_mbr
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{
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rt_uint8_t boot_code[440];
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rt_le32_t unique_mbr_signature;
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rt_le16_t unknown;
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gpt_mbr_record partition_record[4];
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rt_le16_t signature;
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});
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typedef struct _legacy_mbr legacy_mbr;
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#endif /* __PARTITIONS_EFI_H__ */
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