--- /dev/null
+/** @file
+ EFI Guid Partition Table Format Definition.
+
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef __UEFI_GPT_H__
+#define __UEFI_GPT_H__
+
+FILE_LICENCE ( BSD3 );
+
+///
+/// The primary GUID Partition Table Header must be
+/// located in LBA 1 (i.e., the second logical block).
+///
+#define PRIMARY_PART_HEADER_LBA 1
+///
+/// EFI Partition Table Signature: "EFI PART".
+///
+#define EFI_PTAB_HEADER_ID SIGNATURE_64 ('E','F','I',' ','P','A','R','T')
+
+#pragma pack(1)
+
+///
+/// GPT Partition Table Header.
+///
+typedef struct {
+ ///
+ /// The table header for the GPT partition Table.
+ /// This header contains EFI_PTAB_HEADER_ID.
+ ///
+ EFI_TABLE_HEADER Header;
+ ///
+ /// The LBA that contains this data structure.
+ ///
+ EFI_LBA MyLBA;
+ ///
+ /// LBA address of the alternate GUID Partition Table Header.
+ ///
+ EFI_LBA AlternateLBA;
+ ///
+ /// The first usable logical block that may be used
+ /// by a partition described by a GUID Partition Entry.
+ ///
+ EFI_LBA FirstUsableLBA;
+ ///
+ /// The last usable logical block that may be used
+ /// by a partition described by a GUID Partition Entry.
+ ///
+ EFI_LBA LastUsableLBA;
+ ///
+ /// GUID that can be used to uniquely identify the disk.
+ ///
+ EFI_GUID DiskGUID;
+ ///
+ /// The starting LBA of the GUID Partition Entry array.
+ ///
+ EFI_LBA PartitionEntryLBA;
+ ///
+ /// The number of Partition Entries in the GUID Partition Entry array.
+ ///
+ UINT32 NumberOfPartitionEntries;
+ ///
+ /// The size, in bytes, of each the GUID Partition
+ /// Entry structures in the GUID Partition Entry
+ /// array. This field shall be set to a value of 128 x 2^n where n is
+ /// an integer greater than or equal to zero (e.g., 128, 256, 512, etc.).
+ ///
+ UINT32 SizeOfPartitionEntry;
+ ///
+ /// The CRC32 of the GUID Partition Entry array.
+ /// Starts at PartitionEntryLBA and is
+ /// computed over a byte length of
+ /// NumberOfPartitionEntries * SizeOfPartitionEntry.
+ ///
+ UINT32 PartitionEntryArrayCRC32;
+} EFI_PARTITION_TABLE_HEADER;
+
+///
+/// GPT Partition Entry.
+///
+typedef struct {
+ ///
+ /// Unique ID that defines the purpose and type of this Partition. A value of
+ /// zero defines that this partition entry is not being used.
+ ///
+ EFI_GUID PartitionTypeGUID;
+ ///
+ /// GUID that is unique for every partition entry. Every partition ever
+ /// created will have a unique GUID.
+ /// This GUID must be assigned when the GUID Partition Entry is created.
+ ///
+ EFI_GUID UniquePartitionGUID;
+ ///
+ /// Starting LBA of the partition defined by this entry
+ ///
+ EFI_LBA StartingLBA;
+ ///
+ /// Ending LBA of the partition defined by this entry.
+ ///
+ EFI_LBA EndingLBA;
+ ///
+ /// Attribute bits, all bits reserved by UEFI
+ /// Bit 0: If this bit is set, the partition is required for the platform to function. The owner/creator of the
+ /// partition indicates that deletion or modification of the contents can result in loss of platform
+ /// features or failure for the platform to boot or operate. The system cannot function normally if
+ /// this partition is removed, and it should be considered part of the hardware of the system.
+ /// Actions such as running diagnostics, system recovery, or even OS install or boot, could
+ /// potentially stop working if this partition is removed. Unless OS software or firmware
+ /// recognizes this partition, it should never be removed or modified as the UEFI firmware or
+ /// platform hardware may become non-functional.
+ /// Bit 1: If this bit is set, then firmware must not produce an EFI_BLOCK_IO_PROTOCOL device for
+ /// this partition. By not producing an EFI_BLOCK_IO_PROTOCOL partition, file system
+ /// mappings will not be created for this partition in UEFI.
+ /// Bit 2: This bit is set aside to let systems with traditional PC-AT BIOS firmware implementations
+ /// inform certain limited, special-purpose software running on these systems that a GPT
+ /// partition may be bootable. The UEFI boot manager must ignore this bit when selecting
+ /// a UEFI-compliant application, e.g., an OS loader.
+ /// Bits 3-47: Undefined and must be zero. Reserved for expansion by future versions of the UEFI
+ /// specification.
+ /// Bits 48-63: Reserved for GUID specific use. The use of these bits will vary depending on the
+ /// PartitionTypeGUID. Only the owner of the PartitionTypeGUID is allowed
+ /// to modify these bits. They must be preserved if Bits 0-47 are modified..
+ ///
+ UINT64 Attributes;
+ ///
+ /// Null-terminated name of the partition.
+ ///
+ CHAR16 PartitionName[36];
+} EFI_PARTITION_ENTRY;
+
+#pragma pack()
+#endif
+
+
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