/* * Copyright (C) 2008 RuggedCom, Inc. * Richard Retanubun <RichardRetanubun@RuggedCom.com> * * SPDX-License-Identifier: GPL-2.0+ */ /* * See also linux/fs/partitions/efi.h * * EFI GUID Partition Table * Per Intel EFI Specification v1.02 * http://developer.intel.com/technology/efi/efi.htm */ #include <linux/compiler.h> #ifndef _DISK_PART_EFI_H #define _DISK_PART_EFI_H #define MSDOS_MBR_SIGNATURE 0xAA55 #define EFI_PMBR_OSTYPE_EFI 0xEF #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL #define GPT_HEADER_REVISION_V1 0x00010000 #define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL #define GPT_ENTRY_NAME "gpt" #define GPT_ENTRY_NUMBERS 128 #define GPT_ENTRY_SIZE 128 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ ((efi_guid_t) \ {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ (b) & 0xff, ((b) >> 8) & 0xff, \ (c) & 0xff, ((c) >> 8) & 0xff, \ (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) #define PARTITION_SYSTEM_GUID \ EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \ 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B) #define LEGACY_MBR_PARTITION_GUID \ EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \ 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F) #define PARTITION_MSFT_RESERVED_GUID \ EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \ 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE) #define PARTITION_BASIC_DATA_GUID \ EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \ 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7) #define PARTITION_LINUX_RAID_GUID \ EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \ 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e) #define PARTITION_LINUX_SWAP_GUID \ EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \ 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f) #define PARTITION_LINUX_LVM_GUID \ EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \ 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28) /* linux/include/efi.h */ typedef u16 efi_char16_t; typedef struct { u8 b[16]; } efi_guid_t; /* based on linux/include/genhd.h */ struct partition { u8 boot_ind; /* 0x80 - active */ u8 head; /* starting head */ u8 sector; /* starting sector */ u8 cyl; /* starting cylinder */ u8 sys_ind; /* What partition type */ u8 end_head; /* end head */ u8 end_sector; /* end sector */ u8 end_cyl; /* end cylinder */ __le32 start_sect; /* starting sector counting from 0 */ __le32 nr_sects; /* nr of sectors in partition */ } __packed; /* based on linux/fs/partitions/efi.h */ typedef struct _gpt_header { __le64 signature; __le32 revision; __le32 header_size; __le32 header_crc32; __le32 reserved1; __le64 my_lba; __le64 alternate_lba; __le64 first_usable_lba; __le64 last_usable_lba; efi_guid_t disk_guid; __le64 partition_entry_lba; __le32 num_partition_entries; __le32 sizeof_partition_entry; __le32 partition_entry_array_crc32; } __packed gpt_header; typedef union _gpt_entry_attributes { struct { u64 required_to_function:1; u64 no_block_io_protocol:1; u64 legacy_bios_bootable:1; u64 reserved:45; u64 type_guid_specific:16; } fields; unsigned long long raw; } __packed gpt_entry_attributes; #define PARTNAME_SZ (72 / sizeof(efi_char16_t)) typedef struct _gpt_entry { efi_guid_t partition_type_guid; efi_guid_t unique_partition_guid; __le64 starting_lba; __le64 ending_lba; gpt_entry_attributes attributes; efi_char16_t partition_name[PARTNAME_SZ]; } __packed gpt_entry; typedef struct _legacy_mbr { u8 boot_code[440]; __le32 unique_mbr_signature; __le16 unknown; struct partition partition_record[4]; __le16 signature; } __packed legacy_mbr; #endif /* _DISK_PART_EFI_H */