MdePkg/Include/Common/FirmwareVolumeHeader.h

/** @file
  Defines data structure that is the volume header found at the beginning of
  all firmware volumes that are either memory mapped, or have an
  associated FirmwareVolumeBlock protocol.

  Copyright (c) 2006, Intel Corporation                                                         
  All rights reserved. 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.             

  Module Name:  FirmwareVolumeHeader.h

  @par Revision Reference:
  These definitions are from Firmware Volume Block Spec 0.9.

**/

#ifndef __EFI_FIRMWARE_VOLUME_HEADER_H__
#define __EFI_FIRMWARE_VOLUME_HEADER_H__

//
// Firmware Volume Block Attributes definition
//
typedef UINT32  EFI_FVB_ATTRIBUTES;

//
// Firmware Volume Block Attributes bit definitions
//
#define EFI_FVB_READ_DISABLED_CAP   0x00000001
#define EFI_FVB_READ_ENABLED_CAP    0x00000002
#define EFI_FVB_READ_STATUS         0x00000004

#define EFI_FVB_WRITE_DISABLED_CAP  0x00000008
#define EFI_FVB_WRITE_ENABLED_CAP   0x00000010
#define EFI_FVB_WRITE_STATUS        0x00000020

#define EFI_FVB_LOCK_CAP            0x00000040
#define EFI_FVB_LOCK_STATUS         0x00000080

#define EFI_FVB_STICKY_WRITE        0x00000200
#define EFI_FVB_MEMORY_MAPPED       0x00000400
#define EFI_FVB_ERASE_POLARITY      0x00000800

#define EFI_FVB_ALIGNMENT_CAP       0x00008000
#define EFI_FVB_ALIGNMENT_2         0x00010000
#define EFI_FVB_ALIGNMENT_4         0x00020000
#define EFI_FVB_ALIGNMENT_8         0x00040000
#define EFI_FVB_ALIGNMENT_16        0x00080000
#define EFI_FVB_ALIGNMENT_32        0x00100000
#define EFI_FVB_ALIGNMENT_64        0x00200000
#define EFI_FVB_ALIGNMENT_128       0x00400000
#define EFI_FVB_ALIGNMENT_256       0x00800000
#define EFI_FVB_ALIGNMENT_512       0x01000000
#define EFI_FVB_ALIGNMENT_1K        0x02000000
#define EFI_FVB_ALIGNMENT_2K        0x04000000
#define EFI_FVB_ALIGNMENT_4K        0x08000000
#define EFI_FVB_ALIGNMENT_8K        0x10000000
#define EFI_FVB_ALIGNMENT_16K       0x20000000
#define EFI_FVB_ALIGNMENT_32K       0x40000000
#define EFI_FVB_ALIGNMENT_64K       0x80000000

#define EFI_FVB_CAPABILITIES  (EFI_FVB_READ_DISABLED_CAP | \
                              EFI_FVB_READ_ENABLED_CAP | \
                              EFI_FVB_WRITE_DISABLED_CAP | \
                              EFI_FVB_WRITE_ENABLED_CAP | \
                              EFI_FVB_LOCK_CAP \
                              )

#define EFI_TEST_FFS_ATTRIBUTES_BIT(FvbAttributes, TestAttributes, Bit) \
    ( \
      (BOOLEAN) ( \
          (FvbAttributes & EFI_FVB_ERASE_POLARITY) ? (((~TestAttributes) & Bit) == Bit) : ((TestAttributes & Bit) == Bit) \
        ) \
    )

#define EFI_FVB_STATUS    (EFI_FVB_READ_STATUS | EFI_FVB_WRITE_STATUS | EFI_FVB_LOCK_STATUS)

///
/// Firmware Volume Header Revision definition
///
#define EFI_FVH_REVISION  0x01

///
/// Firmware Volume Header Signature definition
///
#define EFI_FVH_SIGNATURE EFI_SIGNATURE_32 ('_', 'F', 'V', 'H')

///
/// Firmware Volume Header Block Map Entry definition
///
typedef struct {
  UINT32  NumBlocks;
  UINT32  BlockLength;
} EFI_FV_BLOCK_MAP_ENTRY;

///
/// Firmware Volume Header definition
///
typedef struct {
  UINT8                   ZeroVector[16];
  EFI_GUID                FileSystemGuid;
  UINT64                  FvLength;
  UINT32                  Signature;
  EFI_FVB_ATTRIBUTES      Attributes;
  UINT16                  HeaderLength;
  UINT16                  Checksum;
  UINT8                   Reserved[3];
  UINT8                   Revision;
  EFI_FV_BLOCK_MAP_ENTRY  FvBlockMap[1];
} EFI_FIRMWARE_VOLUME_HEADER;

#endif