MdePkg/Include/Uefi/UefiGpt.h

   1 /** @file
   2   EFI Guid Partition Table Format Definition.
   3
   4   Copyright (c) 2006 - 2007, 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 #define PRIMARY_PART_HEADER_LBA 1
  19
  20 ///
  21 /// EFI Partition Table Signature: "EFI PART"
  22 ///
  23 #define EFI_PTAB_HEADER_ID      0x5452415020494645ULL
  24
  25 #pragma pack(1)
  26
  27 ///
  28 /// GPT Partition Table Header
  29 ///
  30 typedef struct {
  31   EFI_TABLE_HEADER  Header;
  32   EFI_LBA           MyLBA;
  33   EFI_LBA           AlternateLBA;
  34   EFI_LBA           FirstUsableLBA;
  35   EFI_LBA           LastUsableLBA;
  36   EFI_GUID          DiskGUID;
  37   EFI_LBA           PartitionEntryLBA;
  38   UINT32            NumberOfPartitionEntries;
  39   UINT32            SizeOfPartitionEntry;
  40   UINT32            PartitionEntryArrayCRC32;
  41 } EFI_PARTITION_TABLE_HEADER;
  42
  43 ///
  44 /// GPT Partition Entry
  45 ///
  46 typedef struct {
  47   EFI_GUID  PartitionTypeGUID;
  48   EFI_GUID  UniquePartitionGUID;
  49   EFI_LBA   StartingLBA;
  50   EFI_LBA   EndingLBA;
  51   UINT64    Attributes;
  52   CHAR16    PartitionName[36];
  53 } EFI_PARTITION_ENTRY;
  54
  55 ///
  56 /// GPT Partition Entry Status
  57 ///
  58 typedef struct {
  59   BOOLEAN OutOfRange;
  60   BOOLEAN Overlap;
  61 } EFI_PARTITION_ENTRY_STATUS;
  62
  63 #pragma pack()
  64 #endif
  65
  66