MdePkg/Include/Pi/PiFirmwareVolume.h

/** @file
  The firmware volume related definitions in PI.

  Copyright (c) 2006 - 2017, 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
  which 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.

  @par Revision Reference:
  PI Version 1.6

**/

#ifndef __PI_FIRMWAREVOLUME_H__
#define __PI_FIRMWAREVOLUME_H__

///
/// EFI_FV_FILE_ATTRIBUTES
///
typedef UINT32  EFI_FV_FILE_ATTRIBUTES;

//
// Value of EFI_FV_FILE_ATTRIBUTES.
//
#define EFI_FV_FILE_ATTRIB_ALIGNMENT      0x0000001F
#define EFI_FV_FILE_ATTRIB_FIXED          0x00000100
#define EFI_FV_FILE_ATTRIB_MEMORY_MAPPED  0x00000200

///
/// type of EFI FVB attribute
///
typedef UINT32  EFI_FVB_ATTRIBUTES_2;

//
// Attributes bit definitions
//
#define EFI_FVB2_READ_DISABLED_CAP  0x00000001
#define EFI_FVB2_READ_ENABLED_CAP   0x00000002
#define EFI_FVB2_READ_STATUS        0x00000004
#define EFI_FVB2_WRITE_DISABLED_CAP 0x00000008
#define EFI_FVB2_WRITE_ENABLED_CAP  0x00000010
#define EFI_FVB2_WRITE_STATUS       0x00000020
#define EFI_FVB2_LOCK_CAP           0x00000040
#define EFI_FVB2_LOCK_STATUS        0x00000080
#define EFI_FVB2_STICKY_WRITE       0x00000200
#define EFI_FVB2_MEMORY_MAPPED      0x00000400
#define EFI_FVB2_ERASE_POLARITY     0x00000800
#define EFI_FVB2_READ_LOCK_CAP      0x00001000
#define EFI_FVB2_READ_LOCK_STATUS   0x00002000
#define EFI_FVB2_WRITE_LOCK_CAP     0x00004000
#define EFI_FVB2_WRITE_LOCK_STATUS  0x00008000
#define EFI_FVB2_ALIGNMENT          0x001F0000
#define EFI_FVB2_ALIGNMENT_1        0x00000000
#define EFI_FVB2_ALIGNMENT_2        0x00010000
#define EFI_FVB2_ALIGNMENT_4        0x00020000
#define EFI_FVB2_ALIGNMENT_8        0x00030000
#define EFI_FVB2_ALIGNMENT_16       0x00040000
#define EFI_FVB2_ALIGNMENT_32       0x00050000
#define EFI_FVB2_ALIGNMENT_64       0x00060000
#define EFI_FVB2_ALIGNMENT_128      0x00070000
#define EFI_FVB2_ALIGNMENT_256      0x00080000
#define EFI_FVB2_ALIGNMENT_512      0x00090000
#define EFI_FVB2_ALIGNMENT_1K       0x000A0000
#define EFI_FVB2_ALIGNMENT_2K       0x000B0000
#define EFI_FVB2_ALIGNMENT_4K       0x000C0000
#define EFI_FVB2_ALIGNMENT_8K       0x000D0000
#define EFI_FVB2_ALIGNMENT_16K      0x000E0000
#define EFI_FVB2_ALIGNMENT_32K      0x000F0000
#define EFI_FVB2_ALIGNMENT_64K      0x00100000
#define EFI_FVB2_ALIGNMENT_128K     0x00110000
#define EFI_FVB2_ALIGNMENT_256K     0x00120000
#define EFI_FVB2_ALIGNMENT_512K     0x00130000
#define EFI_FVB2_ALIGNMENT_1M       0x00140000
#define EFI_FVB2_ALIGNMENT_2M       0x00150000
#define EFI_FVB2_ALIGNMENT_4M       0x00160000
#define EFI_FVB2_ALIGNMENT_8M       0x00170000
#define EFI_FVB2_ALIGNMENT_16M      0x00180000
#define EFI_FVB2_ALIGNMENT_32M      0x00190000
#define EFI_FVB2_ALIGNMENT_64M      0x001A0000
#define EFI_FVB2_ALIGNMENT_128M     0x001B0000
#define EFI_FVB2_ALIGNMENT_256M     0x001C0000
#define EFI_FVB2_ALIGNMENT_512M     0x001D0000
#define EFI_FVB2_ALIGNMENT_1G       0x001E0000
#define EFI_FVB2_ALIGNMENT_2G       0x001F0000
#define EFI_FVB2_WEAK_ALIGNMENT     0x80000000

typedef struct {
  ///
  /// The number of sequential blocks which are of the same size.
  ///
  UINT32 NumBlocks;
  ///
  /// The size of the blocks.
  ///
  UINT32 Length;
} EFI_FV_BLOCK_MAP_ENTRY;

///
/// Describes the features and layout of the firmware volume.
///
typedef struct {
  ///
  /// The first 16 bytes are reserved to allow for the reset vector of
  /// processors whose reset vector is at address 0.
  ///
  UINT8                     ZeroVector[16];
  ///
  /// Declares the file system with which the firmware volume is formatted.
  ///
  EFI_GUID                  FileSystemGuid;
  ///
  /// Length in bytes of the complete firmware volume, including the header.
  ///
  UINT64                    FvLength;
  ///
  /// Set to EFI_FVH_SIGNATURE
  ///
  UINT32                    Signature;
  ///
  /// Declares capabilities and power-on defaults for the firmware volume.
  ///
  EFI_FVB_ATTRIBUTES_2      Attributes;
  ///
  /// Length in bytes of the complete firmware volume header.
  ///
  UINT16                    HeaderLength;
  ///
  /// A 16-bit checksum of the firmware volume header. A valid header sums to zero.
  ///
  UINT16                    Checksum;
  ///
  /// Offset, relative to the start of the header, of the extended header
  /// (EFI_FIRMWARE_VOLUME_EXT_HEADER) or zero if there is no extended header.
  ///
  UINT16                    ExtHeaderOffset;
  ///
  /// This field must always be set to zero.
  ///
  UINT8                     Reserved[1];
  ///
  /// Set to 2. Future versions of this specification may define new header fields and will
  /// increment the Revision field accordingly.
  ///
  UINT8                     Revision;
  ///
  /// An array of run-length encoded FvBlockMapEntry structures. The array is
  /// terminated with an entry of {0,0}.
  ///
  EFI_FV_BLOCK_MAP_ENTRY    BlockMap[1];
} EFI_FIRMWARE_VOLUME_HEADER;

#define EFI_FVH_SIGNATURE SIGNATURE_32 ('_', 'F', 'V', 'H')

///
/// Firmware Volume Header Revision definition
///
#define EFI_FVH_REVISION  0x02

///
/// Extension header pointed by ExtHeaderOffset of volume header.
///
typedef struct {
  ///
  /// Firmware volume name.
  ///
  EFI_GUID  FvName;
  ///
  /// Size of the rest of the extension header, including this structure.
  ///
  UINT32    ExtHeaderSize;
} EFI_FIRMWARE_VOLUME_EXT_HEADER;

///
/// Entry struture for describing FV extension header
///
typedef struct {
  ///
  /// Size of this header extension.
  ///
  UINT16    ExtEntrySize;
  ///
  /// Type of the header.
  ///
  UINT16    ExtEntryType;
} EFI_FIRMWARE_VOLUME_EXT_ENTRY;

#define EFI_FV_EXT_TYPE_OEM_TYPE  0x01
///
/// This extension header provides a mapping between a GUID and an OEM file type.
///
typedef struct {
  ///
  /// Standard extension entry, with the type EFI_FV_EXT_TYPE_OEM_TYPE.
  ///
  EFI_FIRMWARE_VOLUME_EXT_ENTRY Hdr;
  ///
  /// A bit mask, one bit for each file type between 0xC0 (bit 0) and 0xDF (bit 31). If a bit
  /// is '1', then the GUID entry exists in Types. If a bit is '0' then no GUID entry exists in Types.
  ///
  UINT32    TypeMask;
  ///
  /// An array of GUIDs, each GUID representing an OEM file type.
  ///
  /// EFI_GUID  Types[1];
  ///
} EFI_FIRMWARE_VOLUME_EXT_ENTRY_OEM_TYPE;

#define EFI_FV_EXT_TYPE_GUID_TYPE 0x0002

///
/// This extension header EFI_FIRMWARE_VOLUME_EXT_ENTRY_GUID_TYPE provides a vendor specific
/// GUID FormatType type which includes a length and a successive series of data bytes.
///
typedef struct {
  ///
  /// Standard extension entry, with the type EFI_FV_EXT_TYPE_OEM_TYPE.
  ///
  EFI_FIRMWARE_VOLUME_EXT_ENTRY     Hdr;
  ///
  /// Vendor-specific GUID.
  ///
  EFI_GUID                          FormatType;
  ///
  /// An arry of bytes of length Length.
  ///
  /// UINT8                             Data[1];
  ///
} EFI_FIRMWARE_VOLUME_EXT_ENTRY_GUID_TYPE;

#define EFI_FV_EXT_TYPE_USED_SIZE_TYPE 0x03

///
/// The EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE can be used to find
/// out how many EFI_FVB2_ERASE_POLARITY bytes are at the end of the FV.
///
typedef struct {
  ///
  /// Standard extension entry, with the type EFI_FV_EXT_TYPE_USED_SIZE_TYPE.
  ///
  EFI_FIRMWARE_VOLUME_EXT_ENTRY     Hdr;
  ///
  /// The number of bytes of the FV that are in uses. The remaining
  /// EFI_FIRMWARE_VOLUME_HEADER FvLength minus UsedSize bytes in
  /// the FV must contain the value implied by EFI_FVB2_ERASE_POLARITY.
  ///
  UINT32                            UsedSize;
} EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE;

#endif