UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / MdePkg / Include / Uefi / UefiGpt.h

/** @file\r
  EFI Guid Partition Table Format Definition.\r
\r
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef __UEFI_GPT_H__\r
#define __UEFI_GPT_H__\r
\r
///\r
/// The primary GUID Partition Table Header must be\r
/// located in LBA 1 (i.e., the second logical block).\r
///\r
#define PRIMARY_PART_HEADER_LBA  1\r
///\r
/// EFI Partition Table Signature: "EFI PART".\r
///\r
#define EFI_PTAB_HEADER_ID  SIGNATURE_64 ('E','F','I',' ','P','A','R','T')\r
///\r
/// Minimum bytes reserve for EFI entry array buffer.\r
///\r
#define EFI_GPT_PART_ENTRY_MIN_SIZE  16384\r
\r
#pragma pack(1)\r
\r
///\r
/// GPT Partition Table Header.\r
///\r
typedef struct {\r
  ///\r
  /// The table header for the GPT partition Table.\r
  /// This header contains EFI_PTAB_HEADER_ID.\r
  ///\r
  EFI_TABLE_HEADER    Header;\r
  ///\r
  /// The LBA that contains this data structure.\r
  ///\r
  EFI_LBA             MyLBA;\r
  ///\r
  /// LBA address of the alternate GUID Partition Table Header.\r
  ///\r
  EFI_LBA             AlternateLBA;\r
  ///\r
  /// The first usable logical block that may be used\r
  /// by a partition described by a GUID Partition Entry.\r
  ///\r
  EFI_LBA             FirstUsableLBA;\r
  ///\r
  /// The last usable logical block that may be used\r
  /// by a partition described by a GUID Partition Entry.\r
  ///\r
  EFI_LBA             LastUsableLBA;\r
  ///\r
  /// GUID that can be used to uniquely identify the disk.\r
  ///\r
  EFI_GUID            DiskGUID;\r
  ///\r
  /// The starting LBA of the GUID Partition Entry array.\r
  ///\r
  EFI_LBA             PartitionEntryLBA;\r
  ///\r
  /// The number of Partition Entries in the GUID Partition Entry array.\r
  ///\r
  UINT32              NumberOfPartitionEntries;\r
  ///\r
  /// The size, in bytes, of each the GUID Partition\r
  /// Entry structures in the GUID Partition Entry\r
  /// array. This field shall be set to a value of 128 x 2^n where n is\r
  /// an integer greater than or equal to zero (e.g., 128, 256, 512, etc.).\r
  ///\r
  UINT32              SizeOfPartitionEntry;\r
  ///\r
  /// The CRC32 of the GUID Partition Entry array.\r
  /// Starts at PartitionEntryLBA and is\r
  /// computed over a byte length of\r
  /// NumberOfPartitionEntries * SizeOfPartitionEntry.\r
  ///\r
  UINT32              PartitionEntryArrayCRC32;\r
} EFI_PARTITION_TABLE_HEADER;\r
\r
///\r
/// GPT Partition Entry.\r
///\r
typedef struct {\r
  ///\r
  /// Unique ID that defines the purpose and type of this Partition. A value of\r
  /// zero defines that this partition entry is not being used.\r
  ///\r
  EFI_GUID    PartitionTypeGUID;\r
  ///\r
  /// GUID that is unique for every partition entry. Every partition ever\r
  /// created will have a unique GUID.\r
  /// This GUID must be assigned when the GUID Partition Entry is created.\r
  ///\r
  EFI_GUID    UniquePartitionGUID;\r
  ///\r
  /// Starting LBA of the partition defined by this entry\r
  ///\r
  EFI_LBA     StartingLBA;\r
  ///\r
  /// Ending LBA of the partition defined by this entry.\r
  ///\r
  EFI_LBA     EndingLBA;\r
  ///\r
  /// Attribute bits, all bits reserved by UEFI\r
  /// Bit 0:      If this bit is set, the partition is required for the platform to function. The owner/creator of the\r
  ///             partition indicates that deletion or modification of the contents can result in loss of platform\r
  ///             features or failure for the platform to boot or operate. The system cannot function normally if\r
  ///             this partition is removed, and it should be considered part of the hardware of the system.\r
  ///             Actions such as running diagnostics, system recovery, or even OS install or boot, could\r
  ///             potentially stop working if this partition is removed. Unless OS software or firmware\r
  ///             recognizes this partition, it should never be removed or modified as the UEFI firmware or\r
  ///             platform hardware may become non-functional.\r
  /// Bit 1:      If this bit is set, then firmware must not produce an EFI_BLOCK_IO_PROTOCOL device for\r
  ///             this partition. By not producing an EFI_BLOCK_IO_PROTOCOL partition, file system\r
  ///             mappings will not be created for this partition in UEFI.\r
  /// Bit 2:      This bit is set aside to let systems with traditional PC-AT BIOS firmware implementations\r
  ///             inform certain limited, special-purpose software running on these systems that a GPT\r
  ///             partition may be bootable. The UEFI boot manager must ignore this bit when selecting\r
  ///             a UEFI-compliant application, e.g., an OS loader.\r
  /// Bits 3-47:  Undefined and must be zero. Reserved for expansion by future versions of the UEFI\r
  ///             specification.\r
  /// Bits 48-63: Reserved for GUID specific use. The use of these bits will vary depending on the\r
  ///             PartitionTypeGUID. Only the owner of the PartitionTypeGUID is allowed\r
  ///             to modify these bits. They must be preserved if Bits 0-47 are modified..\r
  ///\r
  UINT64    Attributes;\r
  ///\r
  /// Null-terminated name of the partition.\r
  ///\r
  CHAR16    PartitionName[36];\r
} EFI_PARTITION_ENTRY;\r
\r
#pragma pack()\r
#endif\r