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07f3d789 1/*
2 * Copyright (C) 2008 RuggedCom, Inc.
3 * Richard Retanubun <RichardRetanubun@RuggedCom.com>
4 *
3765b3e7 5 * SPDX-License-Identifier: GPL-2.0+
07f3d789 6 */
7
8/*
9 * See also linux/fs/partitions/efi.h
10 *
11 * EFI GUID Partition Table
12 * Per Intel EFI Specification v1.02
13 * http://developer.intel.com/technology/efi/efi.htm
14*/
15
fae2bf22
CHP
16#include <linux/compiler.h>
17
07f3d789 18#ifndef _DISK_PART_EFI_H
19#define _DISK_PART_EFI_H
20
867a6ac8
SG
21#include <efi.h>
22
07f3d789 23#define MSDOS_MBR_SIGNATURE 0xAA55
24#define EFI_PMBR_OSTYPE_EFI 0xEF
25#define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
26
07f3d789 27#define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
28#define GPT_HEADER_REVISION_V1 0x00010000
29#define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL
30#define GPT_ENTRY_NAME "gpt"
fae2bf22
CHP
31#define GPT_ENTRY_NUMBERS 128
32#define GPT_ENTRY_SIZE 128
07f3d789 33
07f3d789 34#define PARTITION_SYSTEM_GUID \
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WD
35 EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
36 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
07f3d789 37#define LEGACY_MBR_PARTITION_GUID \
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WD
38 EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
39 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
07f3d789 40#define PARTITION_MSFT_RESERVED_GUID \
3cbd8231
WD
41 EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
42 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
07f3d789 43#define PARTITION_BASIC_DATA_GUID \
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WD
44 EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
45 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
b38c108a
PD
46#define PARTITION_LINUX_FILE_SYSTEM_DATA_GUID \
47 EFI_GUID(0x0FC63DAF, 0x8483, 0x4772, \
48 0x8E, 0x79, 0x3D, 0x69, 0xD8, 0x47, 0x7D, 0xE4)
07f3d789 49#define PARTITION_LINUX_RAID_GUID \
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WD
50 EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
51 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
07f3d789 52#define PARTITION_LINUX_SWAP_GUID \
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WD
53 EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
54 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
07f3d789 55#define PARTITION_LINUX_LVM_GUID \
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WD
56 EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
57 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
07f3d789 58
59/* linux/include/efi.h */
fae2bf22 60typedef u16 efi_char16_t;
07f3d789 61
62typedef struct {
fae2bf22 63 u8 b[16];
07f3d789 64} efi_guid_t;
65
66/* based on linux/include/genhd.h */
67struct partition {
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CHP
68 u8 boot_ind; /* 0x80 - active */
69 u8 head; /* starting head */
70 u8 sector; /* starting sector */
71 u8 cyl; /* starting cylinder */
72 u8 sys_ind; /* What partition type */
73 u8 end_head; /* end head */
74 u8 end_sector; /* end sector */
75 u8 end_cyl; /* end cylinder */
76 __le32 start_sect; /* starting sector counting from 0 */
77 __le32 nr_sects; /* nr of sectors in partition */
78} __packed;
07f3d789 79
80/* based on linux/fs/partitions/efi.h */
81typedef struct _gpt_header {
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CHP
82 __le64 signature;
83 __le32 revision;
84 __le32 header_size;
85 __le32 header_crc32;
86 __le32 reserved1;
87 __le64 my_lba;
88 __le64 alternate_lba;
89 __le64 first_usable_lba;
90 __le64 last_usable_lba;
07f3d789 91 efi_guid_t disk_guid;
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CHP
92 __le64 partition_entry_lba;
93 __le32 num_partition_entries;
94 __le32 sizeof_partition_entry;
95 __le32 partition_entry_array_crc32;
fae2bf22 96} __packed gpt_header;
07f3d789 97
13bf2f55
SW
98typedef union _gpt_entry_attributes {
99 struct {
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CHP
100 u64 required_to_function:1;
101 u64 no_block_io_protocol:1;
102 u64 legacy_bios_bootable:1;
103 u64 reserved:45;
104 u64 type_guid_specific:16;
13bf2f55
SW
105 } fields;
106 unsigned long long raw;
fae2bf22 107} __packed gpt_entry_attributes;
07f3d789 108
6eecc030 109#define PARTNAME_SZ (72 / sizeof(efi_char16_t))
07f3d789 110typedef struct _gpt_entry {
111 efi_guid_t partition_type_guid;
112 efi_guid_t unique_partition_guid;
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CHP
113 __le64 starting_lba;
114 __le64 ending_lba;
07f3d789 115 gpt_entry_attributes attributes;
6eecc030 116 efi_char16_t partition_name[PARTNAME_SZ];
fae2bf22 117} __packed gpt_entry;
07f3d789 118
119typedef struct _legacy_mbr {
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CHP
120 u8 boot_code[440];
121 __le32 unique_mbr_signature;
122 __le16 unknown;
07f3d789 123 struct partition partition_record[4];
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CHP
124 __le16 signature;
125} __packed legacy_mbr;
07f3d789 126
3cbd8231 127#endif /* _DISK_PART_EFI_H */