1 /* 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 32 #ifndef _DISK_PART_EFI_H 33 #define _DISK_PART_EFI_H 34 35 #define MSDOS_MBR_SIGNATURE 0xAA55 36 #define EFI_PMBR_OSTYPE_EFI 0xEF 37 #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE 38 39 #define GPT_BLOCK_SIZE 512 40 #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL 41 #define GPT_HEADER_REVISION_V1 0x00010000 42 #define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL 43 #define GPT_ENTRY_NAME "gpt" 44 45 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ 46 ((efi_guid_t) \ 47 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ 48 (b) & 0xff, ((b) >> 8) & 0xff, \ 49 (c) & 0xff, ((c) >> 8) & 0xff, \ 50 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) 51 52 #define PARTITION_SYSTEM_GUID \ 53 EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \ 54 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B) 55 #define LEGACY_MBR_PARTITION_GUID \ 56 EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \ 57 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F) 58 #define PARTITION_MSFT_RESERVED_GUID \ 59 EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \ 60 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE) 61 #define PARTITION_BASIC_DATA_GUID \ 62 EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \ 63 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7) 64 #define PARTITION_LINUX_RAID_GUID \ 65 EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \ 66 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e) 67 #define PARTITION_LINUX_SWAP_GUID \ 68 EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \ 69 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f) 70 #define PARTITION_LINUX_LVM_GUID \ 71 EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \ 72 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28) 73 74 /* linux/include/efi.h */ 75 typedef unsigned short efi_char16_t; 76 77 typedef struct { 78 unsigned char b[16]; 79 } efi_guid_t; 80 81 /* based on linux/include/genhd.h */ 82 struct partition { 83 unsigned char boot_ind; /* 0x80 - active */ 84 unsigned char head; /* starting head */ 85 unsigned char sector; /* starting sector */ 86 unsigned char cyl; /* starting cylinder */ 87 unsigned char sys_ind; /* What partition type */ 88 unsigned char end_head; /* end head */ 89 unsigned char end_sector; /* end sector */ 90 unsigned char end_cyl; /* end cylinder */ 91 unsigned char start_sect[4]; /* starting sector counting from 0 */ 92 unsigned char nr_sects[4]; /* nr of sectors in partition */ 93 } __attribute__ ((packed)); 94 95 /* based on linux/fs/partitions/efi.h */ 96 typedef struct _gpt_header { 97 unsigned char signature[8]; 98 unsigned char revision[4]; 99 unsigned char header_size[4]; 100 unsigned char header_crc32[4]; 101 unsigned char reserved1[4]; 102 unsigned char my_lba[8]; 103 unsigned char alternate_lba[8]; 104 unsigned char first_usable_lba[8]; 105 unsigned char last_usable_lba[8]; 106 efi_guid_t disk_guid; 107 unsigned char partition_entry_lba[8]; 108 unsigned char num_partition_entries[4]; 109 unsigned char sizeof_partition_entry[4]; 110 unsigned char partition_entry_array_crc32[4]; 111 unsigned char reserved2[GPT_BLOCK_SIZE - 92]; 112 } __attribute__ ((packed)) gpt_header; 113 114 typedef struct _gpt_entry_attributes { 115 unsigned long long required_to_function:1; 116 unsigned long long reserved:47; 117 unsigned long long type_guid_specific:16; 118 } __attribute__ ((packed)) gpt_entry_attributes; 119 120 typedef struct _gpt_entry { 121 efi_guid_t partition_type_guid; 122 efi_guid_t unique_partition_guid; 123 unsigned char starting_lba[8]; 124 unsigned char ending_lba[8]; 125 gpt_entry_attributes attributes; 126 efi_char16_t partition_name[72 / sizeof(efi_char16_t)]; 127 } 128 __attribute__ ((packed)) gpt_entry; 129 130 typedef struct _legacy_mbr { 131 unsigned char boot_code[440]; 132 unsigned char unique_mbr_signature[4]; 133 unsigned char unknown[2]; 134 struct partition partition_record[4]; 135 unsigned char signature[2]; 136 } __attribute__ ((packed)) legacy_mbr; 137 138 #endif /* _DISK_PART_EFI_H */ 139