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a497ee34 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /************************************************************ |
3 | * EFI GUID Partition Table | |
4 | * Per Intel EFI Specification v1.02 | |
5 | * http://developer.intel.com/technology/efi/efi.htm | |
6 | * | |
7 | * By Matt Domsch <Matt_Domsch@dell.com> Fri Sep 22 22:15:56 CDT 2000 | |
8 | * Copyright 2000,2001 Dell Inc. | |
1da177e4 LT |
9 | ************************************************************/ |
10 | ||
11 | #ifndef FS_PART_EFI_H_INCLUDED | |
12 | #define FS_PART_EFI_H_INCLUDED | |
13 | ||
14 | #include <linux/types.h> | |
1da177e4 LT |
15 | #include <linux/fs.h> |
16 | #include <linux/genhd.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/major.h> | |
19 | #include <linux/string.h> | |
20 | #include <linux/efi.h> | |
e3ebf0d4 | 21 | #include <linux/compiler.h> |
1da177e4 LT |
22 | |
23 | #define MSDOS_MBR_SIGNATURE 0xaa55 | |
24 | #define EFI_PMBR_OSTYPE_EFI 0xEF | |
25 | #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE | |
26 | ||
b05ebbbb DB |
27 | #define GPT_MBR_PROTECTIVE 1 |
28 | #define GPT_MBR_HYBRID 2 | |
29 | ||
1da177e4 LT |
30 | #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL |
31 | #define GPT_HEADER_REVISION_V1 0x00010000 | |
32 | #define GPT_PRIMARY_PARTITION_TABLE_LBA 1 | |
33 | ||
34 | #define PARTITION_SYSTEM_GUID \ | |
35 | EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \ | |
36 | 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B) | |
37 | #define LEGACY_MBR_PARTITION_GUID \ | |
38 | EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \ | |
39 | 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F) | |
40 | #define PARTITION_MSFT_RESERVED_GUID \ | |
41 | EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \ | |
42 | 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE) | |
43 | #define PARTITION_BASIC_DATA_GUID \ | |
44 | EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \ | |
45 | 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7) | |
46 | #define PARTITION_LINUX_RAID_GUID \ | |
47 | EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \ | |
48 | 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e) | |
49 | #define PARTITION_LINUX_SWAP_GUID \ | |
50 | EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \ | |
51 | 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f) | |
52 | #define PARTITION_LINUX_LVM_GUID \ | |
53 | EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \ | |
54 | 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28) | |
55 | ||
56 | typedef struct _gpt_header { | |
57 | __le64 signature; | |
58 | __le32 revision; | |
59 | __le32 header_size; | |
60 | __le32 header_crc32; | |
61 | __le32 reserved1; | |
62 | __le64 my_lba; | |
63 | __le64 alternate_lba; | |
64 | __le64 first_usable_lba; | |
65 | __le64 last_usable_lba; | |
66 | efi_guid_t disk_guid; | |
67 | __le64 partition_entry_lba; | |
68 | __le32 num_partition_entries; | |
69 | __le32 sizeof_partition_entry; | |
70 | __le32 partition_entry_array_crc32; | |
87038c2d KZ |
71 | |
72 | /* The rest of the logical block is reserved by UEFI and must be zero. | |
73 | * EFI standard handles this by: | |
74 | * | |
75 | * uint8_t reserved2[ BlockSize - 92 ]; | |
76 | */ | |
e3ebf0d4 | 77 | } __packed gpt_header; |
1da177e4 LT |
78 | |
79 | typedef struct _gpt_entry_attributes { | |
80 | u64 required_to_function:1; | |
81 | u64 reserved:47; | |
82 | u64 type_guid_specific:16; | |
e3ebf0d4 | 83 | } __packed gpt_entry_attributes; |
1da177e4 LT |
84 | |
85 | typedef struct _gpt_entry { | |
86 | efi_guid_t partition_type_guid; | |
87 | efi_guid_t unique_partition_guid; | |
88 | __le64 starting_lba; | |
89 | __le64 ending_lba; | |
90 | gpt_entry_attributes attributes; | |
d5528d5e | 91 | __le16 partition_name[72/sizeof(__le16)]; |
e3ebf0d4 | 92 | } __packed gpt_entry; |
1da177e4 | 93 | |
c2ebdc24 DB |
94 | typedef struct _gpt_mbr_record { |
95 | u8 boot_indicator; /* unused by EFI, set to 0x80 for bootable */ | |
96 | u8 start_head; /* unused by EFI, pt start in CHS */ | |
97 | u8 start_sector; /* unused by EFI, pt start in CHS */ | |
98 | u8 start_track; | |
99 | u8 os_type; /* EFI and legacy non-EFI OS types */ | |
100 | u8 end_head; /* unused by EFI, pt end in CHS */ | |
101 | u8 end_sector; /* unused by EFI, pt end in CHS */ | |
102 | u8 end_track; /* unused by EFI, pt end in CHS */ | |
103 | __le32 starting_lba; /* used by EFI - start addr of the on disk pt */ | |
104 | __le32 size_in_lba; /* used by EFI - size of pt in LBA */ | |
105 | } __packed gpt_mbr_record; | |
106 | ||
107 | ||
1da177e4 LT |
108 | typedef struct _legacy_mbr { |
109 | u8 boot_code[440]; | |
110 | __le32 unique_mbr_signature; | |
111 | __le16 unknown; | |
c2ebdc24 | 112 | gpt_mbr_record partition_record[4]; |
1da177e4 | 113 | __le16 signature; |
e3ebf0d4 | 114 | } __packed legacy_mbr; |
1da177e4 | 115 | |
1da177e4 | 116 | #endif |