1 /************************************************************ 2 * EFI GUID Partition Table 3 * Per Intel EFI Specification v1.02 4 * http://developer.intel.com/technology/efi/efi.htm 5 * 6 * By Matt Domsch <Matt_Domsch@dell.com> Fri Sep 22 22:15:56 CDT 2000 7 * Copyright 2000,2001 Dell Inc. 8 * 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. 13 * 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. 18 * 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 22 * 23 ************************************************************/ 24 25 #ifndef FS_PART_EFI_H_INCLUDED 26 #define FS_PART_EFI_H_INCLUDED 27 28 #include <linux/types.h> 29 #include <linux/fs.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> 35 36 #define MSDOS_MBR_SIGNATURE 0xaa55 37 #define EFI_PMBR_OSTYPE_EFI 0xEF 38 #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE 39 40 #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL 41 #define GPT_HEADER_REVISION_V1 0x00010000 42 #define GPT_PRIMARY_PARTITION_TABLE_LBA 1 43 44 #define PARTITION_SYSTEM_GUID \ 45 EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \ 46 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B) 47 #define LEGACY_MBR_PARTITION_GUID \ 48 EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \ 49 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F) 50 #define PARTITION_MSFT_RESERVED_GUID \ 51 EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \ 52 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE) 53 #define PARTITION_BASIC_DATA_GUID \ 54 EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \ 55 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7) 56 #define PARTITION_LINUX_RAID_GUID \ 57 EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \ 58 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e) 59 #define PARTITION_LINUX_SWAP_GUID \ 60 EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \ 61 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f) 62 #define PARTITION_LINUX_LVM_GUID \ 63 EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \ 64 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28) 65 66 typedef struct _gpt_header { 67 __le64 signature; 68 __le32 revision; 69 __le32 header_size; 70 __le32 header_crc32; 71 __le32 reserved1; 72 __le64 my_lba; 73 __le64 alternate_lba; 74 __le64 first_usable_lba; 75 __le64 last_usable_lba; 76 efi_guid_t disk_guid; 77 __le64 partition_entry_lba; 78 __le32 num_partition_entries; 79 __le32 sizeof_partition_entry; 80 __le32 partition_entry_array_crc32; 81 82 /* The rest of the logical block is reserved by UEFI and must be zero. 83 * EFI standard handles this by: 84 * 85 * uint8_t reserved2[ BlockSize - 92 ]; 86 */ 87 } __attribute__ ((packed)) gpt_header; 88 89 typedef struct _gpt_entry_attributes { 90 u64 required_to_function:1; 91 u64 reserved:47; 92 u64 type_guid_specific:16; 93 } __attribute__ ((packed)) gpt_entry_attributes; 94 95 typedef struct _gpt_entry { 96 efi_guid_t partition_type_guid; 97 efi_guid_t unique_partition_guid; 98 __le64 starting_lba; 99 __le64 ending_lba; 100 gpt_entry_attributes attributes; 101 efi_char16_t partition_name[72 / sizeof (efi_char16_t)]; 102 } __attribute__ ((packed)) gpt_entry; 103 104 typedef struct _legacy_mbr { 105 u8 boot_code[440]; 106 __le32 unique_mbr_signature; 107 __le16 unknown; 108 struct partition partition_record[4]; 109 __le16 signature; 110 } __attribute__ ((packed)) legacy_mbr; 111 112 /* Functions */ 113 extern int efi_partition(struct parsed_partitions *state); 114 115 #endif 116 117 /* 118 * Overrides for Emacs so that we follow Linus's tabbing style. 119 * Emacs will notice this stuff at the end of the file and automatically 120 * adjust the settings for this buffer only. This must remain at the end 121 * of the file. 122 * -------------------------------------------------------------------------- 123 * Local variables: 124 * c-indent-level: 4 125 * c-brace-imaginary-offset: 0 126 * c-brace-offset: -4 127 * c-argdecl-indent: 4 128 * c-label-offset: -4 129 * c-continued-statement-offset: 4 130 * c-continued-brace-offset: 0 131 * indent-tabs-mode: nil 132 * tab-width: 8 133 * End: 134 */ 135