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richardretanubun07f3d782008-09-26 11:13:22 -04001/*
2 * Copyright (C) 2008 RuggedCom, Inc.
3 * Richard Retanubun <RichardRetanubun@RuggedCom.com>
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24/*
25 * See also linux/fs/partitions/efi.h
26 *
27 * EFI GUID Partition Table
28 * Per Intel EFI Specification v1.02
29 * http://developer.intel.com/technology/efi/efi.htm
30*/
31
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +010032#include <linux/compiler.h>
33
richardretanubun07f3d782008-09-26 11:13:22 -040034#ifndef _DISK_PART_EFI_H
35#define _DISK_PART_EFI_H
36
37#define MSDOS_MBR_SIGNATURE 0xAA55
38#define EFI_PMBR_OSTYPE_EFI 0xEF
39#define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
40
richardretanubun07f3d782008-09-26 11:13:22 -040041#define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
42#define GPT_HEADER_REVISION_V1 0x00010000
43#define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL
44#define GPT_ENTRY_NAME "gpt"
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +010045#define GPT_ENTRY_NUMBERS 128
46#define GPT_ENTRY_SIZE 128
richardretanubun07f3d782008-09-26 11:13:22 -040047
48#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010049 ((efi_guid_t) \
50 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
51 (b) & 0xff, ((b) >> 8) & 0xff, \
52 (c) & 0xff, ((c) >> 8) & 0xff, \
53 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
richardretanubun07f3d782008-09-26 11:13:22 -040054
55#define PARTITION_SYSTEM_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010056 EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
57 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
richardretanubun07f3d782008-09-26 11:13:22 -040058#define LEGACY_MBR_PARTITION_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010059 EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
60 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
richardretanubun07f3d782008-09-26 11:13:22 -040061#define PARTITION_MSFT_RESERVED_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010062 EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
63 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
richardretanubun07f3d782008-09-26 11:13:22 -040064#define PARTITION_BASIC_DATA_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010065 EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
66 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
richardretanubun07f3d782008-09-26 11:13:22 -040067#define PARTITION_LINUX_RAID_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010068 EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
69 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
richardretanubun07f3d782008-09-26 11:13:22 -040070#define PARTITION_LINUX_SWAP_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010071 EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
72 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
richardretanubun07f3d782008-09-26 11:13:22 -040073#define PARTITION_LINUX_LVM_GUID \
Wolfgang Denk3cbd8232008-11-02 16:14:22 +010074 EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
75 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
richardretanubun07f3d782008-09-26 11:13:22 -040076
77/* linux/include/efi.h */
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +010078typedef u16 efi_char16_t;
richardretanubun07f3d782008-09-26 11:13:22 -040079
80typedef struct {
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +010081 u8 b[16];
richardretanubun07f3d782008-09-26 11:13:22 -040082} efi_guid_t;
83
84/* based on linux/include/genhd.h */
85struct partition {
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +010086 u8 boot_ind; /* 0x80 - active */
87 u8 head; /* starting head */
88 u8 sector; /* starting sector */
89 u8 cyl; /* starting cylinder */
90 u8 sys_ind; /* What partition type */
91 u8 end_head; /* end head */
92 u8 end_sector; /* end sector */
93 u8 end_cyl; /* end cylinder */
94 __le32 start_sect; /* starting sector counting from 0 */
95 __le32 nr_sects; /* nr of sectors in partition */
96} __packed;
richardretanubun07f3d782008-09-26 11:13:22 -040097
98/* based on linux/fs/partitions/efi.h */
99typedef struct _gpt_header {
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100100 __le64 signature;
101 __le32 revision;
102 __le32 header_size;
103 __le32 header_crc32;
104 __le32 reserved1;
105 __le64 my_lba;
106 __le64 alternate_lba;
107 __le64 first_usable_lba;
108 __le64 last_usable_lba;
richardretanubun07f3d782008-09-26 11:13:22 -0400109 efi_guid_t disk_guid;
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100110 __le64 partition_entry_lba;
111 __le32 num_partition_entries;
112 __le32 sizeof_partition_entry;
113 __le32 partition_entry_array_crc32;
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100114} __packed gpt_header;
richardretanubun07f3d782008-09-26 11:13:22 -0400115
Stephen Warren13bf2f52012-10-08 08:14:36 +0000116typedef union _gpt_entry_attributes {
117 struct {
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100118 u64 required_to_function:1;
119 u64 no_block_io_protocol:1;
120 u64 legacy_bios_bootable:1;
121 u64 reserved:45;
122 u64 type_guid_specific:16;
Stephen Warren13bf2f52012-10-08 08:14:36 +0000123 } fields;
124 unsigned long long raw;
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100125} __packed gpt_entry_attributes;
richardretanubun07f3d782008-09-26 11:13:22 -0400126
Lei Wen6eecc032011-09-07 18:11:19 +0000127#define PARTNAME_SZ (72 / sizeof(efi_char16_t))
richardretanubun07f3d782008-09-26 11:13:22 -0400128typedef struct _gpt_entry {
129 efi_guid_t partition_type_guid;
130 efi_guid_t unique_partition_guid;
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100131 __le64 starting_lba;
132 __le64 ending_lba;
richardretanubun07f3d782008-09-26 11:13:22 -0400133 gpt_entry_attributes attributes;
Lei Wen6eecc032011-09-07 18:11:19 +0000134 efi_char16_t partition_name[PARTNAME_SZ];
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100135} __packed gpt_entry;
richardretanubun07f3d782008-09-26 11:13:22 -0400136
137typedef struct _legacy_mbr {
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100138 u8 boot_code[440];
139 __le32 unique_mbr_signature;
140 __le16 unknown;
richardretanubun07f3d782008-09-26 11:13:22 -0400141 struct partition partition_record[4];
Chang Hyun Parkfae2bf22012-12-11 11:09:45 +0100142 __le16 signature;
143} __packed legacy_mbr;
richardretanubun07f3d782008-09-26 11:13:22 -0400144
Wolfgang Denk3cbd8232008-11-02 16:14:22 +0100145#endif /* _DISK_PART_EFI_H */