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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/************************************************************3 * EFI GUID Partition Table4 * Per Intel EFI Specification v1.025 * http://developer.intel.com/technology/efi/efi.htm6 *7 * By Matt Domsch <Matt_Domsch@dell.com> Fri Sep 22 22:15:56 CDT 2000 8 * Copyright 2000,2001 Dell Inc.9 ************************************************************/10 11#ifndef FS_PART_EFI_H_INCLUDED12#define FS_PART_EFI_H_INCLUDED13 14#include <linux/types.h>15#include <linux/fs.h>16#include <linux/kernel.h>17#include <linux/major.h>18#include <linux/string.h>19#include <linux/efi.h>20#include <linux/compiler.h>21 22#define MSDOS_MBR_SIGNATURE 0xaa5523#define EFI_PMBR_OSTYPE_EFI 0xEF24#define EFI_PMBR_OSTYPE_EFI_GPT 0xEE25 26#define GPT_MBR_PROTECTIVE 127#define GPT_MBR_HYBRID 228 29#define GPT_HEADER_SIGNATURE 0x5452415020494645ULL30#define GPT_HEADER_REVISION_V1 0x0001000031#define GPT_PRIMARY_PARTITION_TABLE_LBA 132 33#define PARTITION_SYSTEM_GUID \34 EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \35 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B) 36#define LEGACY_MBR_PARTITION_GUID \37 EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \38 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F)39#define PARTITION_MSFT_RESERVED_GUID \40 EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \41 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE)42#define PARTITION_BASIC_DATA_GUID \43 EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \44 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)45#define PARTITION_LINUX_RAID_GUID \46 EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \47 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e)48#define PARTITION_LINUX_SWAP_GUID \49 EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \50 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f)51#define PARTITION_LINUX_LVM_GUID \52 EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \53 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)54 55typedef struct _gpt_header {56 __le64 signature;57 __le32 revision;58 __le32 header_size;59 __le32 header_crc32;60 __le32 reserved1;61 __le64 my_lba;62 __le64 alternate_lba;63 __le64 first_usable_lba;64 __le64 last_usable_lba;65 efi_guid_t disk_guid;66 __le64 partition_entry_lba;67 __le32 num_partition_entries;68 __le32 sizeof_partition_entry;69 __le32 partition_entry_array_crc32;70 71 /* The rest of the logical block is reserved by UEFI and must be zero.72 * EFI standard handles this by:73 *74 * uint8_t reserved2[ BlockSize - 92 ];75 */76} __packed gpt_header;77 78typedef struct _gpt_entry_attributes {79 u64 required_to_function:1;80 u64 reserved:47;81 u64 type_guid_specific:16;82} __packed gpt_entry_attributes;83 84typedef struct _gpt_entry {85 efi_guid_t partition_type_guid;86 efi_guid_t unique_partition_guid;87 __le64 starting_lba;88 __le64 ending_lba;89 gpt_entry_attributes attributes;90 __le16 partition_name[72/sizeof(__le16)];91} __packed gpt_entry;92 93typedef struct _gpt_mbr_record {94 u8 boot_indicator; /* unused by EFI, set to 0x80 for bootable */95 u8 start_head; /* unused by EFI, pt start in CHS */96 u8 start_sector; /* unused by EFI, pt start in CHS */97 u8 start_track;98 u8 os_type; /* EFI and legacy non-EFI OS types */99 u8 end_head; /* unused by EFI, pt end in CHS */100 u8 end_sector; /* unused by EFI, pt end in CHS */101 u8 end_track; /* unused by EFI, pt end in CHS */102 __le32 starting_lba; /* used by EFI - start addr of the on disk pt */103 __le32 size_in_lba; /* used by EFI - size of pt in LBA */104} __packed gpt_mbr_record;105 106 107typedef struct _legacy_mbr {108 u8 boot_code[440];109 __le32 unique_mbr_signature;110 __le16 unknown;111 gpt_mbr_record partition_record[4];112 __le16 signature;113} __packed legacy_mbr;114 115#endif116