1 /************************************************************
2 * EFI GUID Partition Table
3 * Per Intel EFI Specification v1.02
4 * http://developer.intel.com/technology/efi/efi.htm
6 * By Matt Domsch <Matt_Domsch@dell.com> Fri Sep 22 22:15:56 CDT 2000
7 * Copyright 2000,2001 Dell Inc.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 ************************************************************/
25 #ifndef FS_PART_EFI_H_INCLUDED
26 #define FS_PART_EFI_H_INCLUDED
28 #include <linux/types.h>
30 #include <linux/genhd.h>
31 #include <linux/kernel.h>
32 #include <linux/major.h>
33 #include <linux/string.h>
34 #include <linux/efi.h>
36 #define MSDOS_MBR_SIGNATURE 0xaa55
37 #define EFI_PMBR_OSTYPE_EFI 0xEF
38 #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE
40 #define GPT_MBR_PROTECTIVE 1
41 #define GPT_MBR_HYBRID 2
43 #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL
44 #define GPT_HEADER_REVISION_V1 0x00010000
45 #define GPT_PRIMARY_PARTITION_TABLE_LBA 1
47 #define PARTITION_SYSTEM_GUID \
48 EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \
49 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
50 #define LEGACY_MBR_PARTITION_GUID \
51 EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \
52 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)
53 #define PARTITION_MSFT_RESERVED_GUID \
54 EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \
55 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)
56 #define PARTITION_BASIC_DATA_GUID \
57 EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \
58 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
59 #define PARTITION_LINUX_RAID_GUID \
60 EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \
61 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)
62 #define PARTITION_LINUX_SWAP_GUID \
63 EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \
64 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)
65 #define PARTITION_LINUX_LVM_GUID \
66 EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
67 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
69 typedef struct _gpt_header {
77 __le64 first_usable_lba;
78 __le64 last_usable_lba;
80 __le64 partition_entry_lba;
81 __le32 num_partition_entries;
82 __le32 sizeof_partition_entry;
83 __le32 partition_entry_array_crc32;
85 /* The rest of the logical block is reserved by UEFI and must be zero.
86 * EFI standard handles this by:
88 * uint8_t reserved2[ BlockSize - 92 ];
90 } __attribute__ ((packed)) gpt_header;
92 typedef struct _gpt_entry_attributes {
93 u64 required_to_function:1;
95 u64 type_guid_specific:16;
96 } __attribute__ ((packed)) gpt_entry_attributes;
98 typedef struct _gpt_entry {
99 efi_guid_t partition_type_guid;
100 efi_guid_t unique_partition_guid;
103 gpt_entry_attributes attributes;
104 efi_char16_t partition_name[72 / sizeof (efi_char16_t)];
105 } __attribute__ ((packed)) gpt_entry;
107 typedef struct _gpt_mbr_record {
108 u8 boot_indicator; /* unused by EFI, set to 0x80 for bootable */
109 u8 start_head; /* unused by EFI, pt start in CHS */
110 u8 start_sector; /* unused by EFI, pt start in CHS */
112 u8 os_type; /* EFI and legacy non-EFI OS types */
113 u8 end_head; /* unused by EFI, pt end in CHS */
114 u8 end_sector; /* unused by EFI, pt end in CHS */
115 u8 end_track; /* unused by EFI, pt end in CHS */
116 __le32 starting_lba; /* used by EFI - start addr of the on disk pt */
117 __le32 size_in_lba; /* used by EFI - size of pt in LBA */
118 } __packed gpt_mbr_record;
121 typedef struct _legacy_mbr {
123 __le32 unique_mbr_signature;
125 gpt_mbr_record partition_record[4];
127 } __attribute__ ((packed)) legacy_mbr;
130 extern int efi_partition(struct parsed_partitions *state);
135 * Overrides for Emacs so that we follow Linus's tabbing style.
136 * Emacs will notice this stuff at the end of the file and automatically
137 * adjust the settings for this buffer only. This must remain at the end
139 * --------------------------------------------------------------------------
142 * c-brace-imaginary-offset: 0
144 * c-argdecl-indent: 4
146 * c-continued-statement-offset: 4
147 * c-continued-brace-offset: 0
148 * indent-tabs-mode: nil