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