MdePkg/Include/Uefi/UefiGpt.h

   1 /** @file
   2   EFI Guid Partition Table Format Definition.
   3
   4   Copyright (c) 2006 - 2008, Intel Corporation
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef __UEFI_GPT_H__
  16 #define __UEFI_GPT_H__
  17
  18 ///
  19 /// The primary GUID Partition Table Header must be
  20 /// located in LBA 1 (i.e., the second logical block).
  21 ///
  22 #define PRIMARY_PART_HEADER_LBA 1
  23
  24 ///
  25 /// EFI Partition Table Signature: "EFI PART"
  26 ///
  27 #define EFI_PTAB_HEADER_ID      0x5452415020494645ULL
  28
  29 #pragma pack(1)
  30
  31 ///
  32 /// GPT Partition Table Header
  33 ///
  34 typedef struct {
  35   EFI_TABLE_HEADER  Header;
  36   EFI_LBA           MyLBA;
  37   EFI_LBA           AlternateLBA;
  38   EFI_LBA           FirstUsableLBA;
  39   EFI_LBA           LastUsableLBA;
  40   EFI_GUID          DiskGUID;
  41   EFI_LBA           PartitionEntryLBA;
  42   UINT32            NumberOfPartitionEntries;
  43   UINT32            SizeOfPartitionEntry;
  44   UINT32            PartitionEntryArrayCRC32;
  45 } EFI_PARTITION_TABLE_HEADER;
  46
  47 ///
  48 /// GPT Partition Entry
  49 ///
  50 typedef struct {
  51   EFI_GUID  PartitionTypeGUID;
  52   EFI_GUID  UniquePartitionGUID;
  53   EFI_LBA   StartingLBA;
  54   EFI_LBA   EndingLBA;
  55   UINT64    Attributes;
  56   CHAR16    PartitionName[36];
  57 } EFI_PARTITION_ENTRY;
  58
  59 #pragma pack()
  60 #endif
  61
  62