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