1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Copyright (C) 2008 RuggedCom, Inc. 3*4882a593Smuzhiyun * Richard Retanubun <RichardRetanubun@RuggedCom.com> 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun /* 9*4882a593Smuzhiyun * See also linux/fs/partitions/efi.h 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * EFI GUID Partition Table 12*4882a593Smuzhiyun * Per Intel EFI Specification v1.02 13*4882a593Smuzhiyun * http://developer.intel.com/technology/efi/efi.htm 14*4882a593Smuzhiyun */ 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #include <linux/compiler.h> 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #ifndef _DISK_PART_EFI_H 19*4882a593Smuzhiyun #define _DISK_PART_EFI_H 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun #include <efi.h> 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun #define MSDOS_MBR_SIGNATURE 0xAA55 24*4882a593Smuzhiyun #define EFI_PMBR_OSTYPE_EFI 0xEF 25*4882a593Smuzhiyun #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL 28*4882a593Smuzhiyun #define GPT_HEADER_REVISION_V1 0x00010000 29*4882a593Smuzhiyun #define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL 30*4882a593Smuzhiyun #define GPT_ENTRY_NUMBERS CONFIG_EFI_PARTITION_ENTRIES_NUMBERS 31*4882a593Smuzhiyun #define GPT_ENTRY_SIZE 128 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun #define PARTITION_SYSTEM_GUID \ 34*4882a593Smuzhiyun EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \ 35*4882a593Smuzhiyun 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B) 36*4882a593Smuzhiyun #define LEGACY_MBR_PARTITION_GUID \ 37*4882a593Smuzhiyun EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \ 38*4882a593Smuzhiyun 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F) 39*4882a593Smuzhiyun #define PARTITION_MSFT_RESERVED_GUID \ 40*4882a593Smuzhiyun EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \ 41*4882a593Smuzhiyun 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE) 42*4882a593Smuzhiyun #define PARTITION_BASIC_DATA_GUID \ 43*4882a593Smuzhiyun EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \ 44*4882a593Smuzhiyun 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7) 45*4882a593Smuzhiyun #define PARTITION_LINUX_FILE_SYSTEM_DATA_GUID \ 46*4882a593Smuzhiyun EFI_GUID(0x0FC63DAF, 0x8483, 0x4772, \ 47*4882a593Smuzhiyun 0x8E, 0x79, 0x3D, 0x69, 0xD8, 0x47, 0x7D, 0xE4) 48*4882a593Smuzhiyun #define PARTITION_LINUX_RAID_GUID \ 49*4882a593Smuzhiyun EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \ 50*4882a593Smuzhiyun 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e) 51*4882a593Smuzhiyun #define PARTITION_LINUX_SWAP_GUID \ 52*4882a593Smuzhiyun EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \ 53*4882a593Smuzhiyun 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f) 54*4882a593Smuzhiyun #define PARTITION_LINUX_LVM_GUID \ 55*4882a593Smuzhiyun EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \ 56*4882a593Smuzhiyun 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28) 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun /* linux/include/efi.h */ 59*4882a593Smuzhiyun typedef u16 efi_char16_t; 60*4882a593Smuzhiyun 61*4882a593Smuzhiyun /* based on linux/include/genhd.h */ 62*4882a593Smuzhiyun struct partition { 63*4882a593Smuzhiyun u8 boot_ind; /* 0x80 - active */ 64*4882a593Smuzhiyun u8 head; /* starting head */ 65*4882a593Smuzhiyun u8 sector; /* starting sector */ 66*4882a593Smuzhiyun u8 cyl; /* starting cylinder */ 67*4882a593Smuzhiyun u8 sys_ind; /* What partition type */ 68*4882a593Smuzhiyun u8 end_head; /* end head */ 69*4882a593Smuzhiyun u8 end_sector; /* end sector */ 70*4882a593Smuzhiyun u8 end_cyl; /* end cylinder */ 71*4882a593Smuzhiyun __le32 start_sect; /* starting sector counting from 0 */ 72*4882a593Smuzhiyun __le32 nr_sects; /* nr of sectors in partition */ 73*4882a593Smuzhiyun } __packed; 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun /* based on linux/fs/partitions/efi.h */ 76*4882a593Smuzhiyun typedef struct _gpt_header { 77*4882a593Smuzhiyun __le64 signature; 78*4882a593Smuzhiyun __le32 revision; 79*4882a593Smuzhiyun __le32 header_size; 80*4882a593Smuzhiyun __le32 header_crc32; 81*4882a593Smuzhiyun __le32 reserved1; 82*4882a593Smuzhiyun __le64 my_lba; 83*4882a593Smuzhiyun __le64 alternate_lba; 84*4882a593Smuzhiyun __le64 first_usable_lba; 85*4882a593Smuzhiyun __le64 last_usable_lba; 86*4882a593Smuzhiyun efi_guid_t disk_guid; 87*4882a593Smuzhiyun __le64 partition_entry_lba; 88*4882a593Smuzhiyun __le32 num_partition_entries; 89*4882a593Smuzhiyun __le32 sizeof_partition_entry; 90*4882a593Smuzhiyun __le32 partition_entry_array_crc32; 91*4882a593Smuzhiyun } __packed gpt_header; 92*4882a593Smuzhiyun 93*4882a593Smuzhiyun typedef union _gpt_entry_attributes { 94*4882a593Smuzhiyun struct { 95*4882a593Smuzhiyun u64 required_to_function:1; 96*4882a593Smuzhiyun u64 no_block_io_protocol:1; 97*4882a593Smuzhiyun u64 legacy_bios_bootable:1; 98*4882a593Smuzhiyun u64 reserved:45; 99*4882a593Smuzhiyun u64 type_guid_specific:16; 100*4882a593Smuzhiyun } fields; 101*4882a593Smuzhiyun unsigned long long raw; 102*4882a593Smuzhiyun } __packed gpt_entry_attributes; 103*4882a593Smuzhiyun 104*4882a593Smuzhiyun #define PARTNAME_SZ (72 / sizeof(efi_char16_t)) 105*4882a593Smuzhiyun typedef struct _gpt_entry { 106*4882a593Smuzhiyun efi_guid_t partition_type_guid; 107*4882a593Smuzhiyun efi_guid_t unique_partition_guid; 108*4882a593Smuzhiyun __le64 starting_lba; 109*4882a593Smuzhiyun __le64 ending_lba; 110*4882a593Smuzhiyun gpt_entry_attributes attributes; 111*4882a593Smuzhiyun efi_char16_t partition_name[PARTNAME_SZ]; 112*4882a593Smuzhiyun } __packed gpt_entry; 113*4882a593Smuzhiyun 114*4882a593Smuzhiyun typedef struct _legacy_mbr { 115*4882a593Smuzhiyun u8 boot_code[440]; 116*4882a593Smuzhiyun __le32 unique_mbr_signature; 117*4882a593Smuzhiyun __le16 unknown; 118*4882a593Smuzhiyun struct partition partition_record[4]; 119*4882a593Smuzhiyun __le16 signature; 120*4882a593Smuzhiyun } __packed legacy_mbr; 121*4882a593Smuzhiyun 122*4882a593Smuzhiyun #endif /* _DISK_PART_EFI_H */ 123