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

Copyright (c) 2006 - 2010, 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.              

  @par Revision Reference:
  PI Version 1.2.

**/


#ifndef __PI_FIRMWARE_FILE_H__
#define __PI_FIRMWARE_FILE_H__

#pragma pack(1)
///
/// Used to verify the integrity of the file.
/// 
typedef union {
  struct {
    ///
    /// The IntegrityCheck.Checksum.Header field is an 8-bit checksum of the file
    /// header. The State and IntegrityCheck.Checksum.File fields are assumed
    /// to be zero and the checksum is calculated such that the entire header sums to zero.
    ///
    UINT8   Header;
    ///
    /// If the FFS_ATTRIB_CHECKSUM (see definition below) bit of the Attributes
    /// field is set to one, the IntegrityCheck.Checksum.File field is an 8-bit
    /// checksum of the entire file The State field and the file tail are assumed to be zero
    /// and the checksum is calculated such that the entire file sums to zero.
    /// If the FFS_ATTRIB_CHECKSUM bit of the Attributes field is cleared to zero,
    /// the IntegrityCheck.Checksum.File field must be initialized with a value of
    /// 0xAA. The IntegrityCheck.Checksum.File field is valid any time the
    /// EFI_FILE_DATA_VALID bit is set in the State field.
    ///
    UINT8   File;
  } Checksum;
  ///
  /// This is the full 16 bits of the IntegrityCheck field.
  ///
  UINT16    Checksum16;
} EFI_FFS_INTEGRITY_CHECK;

///
/// FFS_FIXED_CHECKSUM is the checksum value used when the
/// FFS_ATTRIB_CHECKSUM attribute bit is clear.
///
#define FFS_FIXED_CHECKSUM  0xAA

typedef UINT8 EFI_FV_FILETYPE;
typedef UINT8 EFI_FFS_FILE_ATTRIBUTES;
typedef UINT8 EFI_FFS_FILE_STATE;

///
/// File Types Definitions
/// 
#define EFI_FV_FILETYPE_ALL                   0x00
#define EFI_FV_FILETYPE_RAW                   0x01
#define EFI_FV_FILETYPE_FREEFORM              0x02
#define EFI_FV_FILETYPE_SECURITY_CORE         0x03
#define EFI_FV_FILETYPE_PEI_CORE              0x04
#define EFI_FV_FILETYPE_DXE_CORE              0x05
#define EFI_FV_FILETYPE_PEIM                  0x06
#define EFI_FV_FILETYPE_DRIVER                0x07
#define EFI_FV_FILETYPE_COMBINED_PEIM_DRIVER  0x08
#define EFI_FV_FILETYPE_APPLICATION           0x09
#define EFI_FV_FILETYPE_SMM                   0x0A
#define EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE 0x0B
#define EFI_FV_FILETYPE_COMBINED_SMM_DXE      0x0C
#define EFI_FV_FILETYPE_SMM_CORE              0x0D
#define EFI_FV_FILETYPE_OEM_MIN               0xc0
#define EFI_FV_FILETYPE_OEM_MAX               0xdf
#define EFI_FV_FILETYPE_DEBUG_MIN             0xe0
#define EFI_FV_FILETYPE_DEBUG_MAX             0xef
#define EFI_FV_FILETYPE_FFS_MIN               0xf0
#define EFI_FV_FILETYPE_FFS_MAX               0xff
#define EFI_FV_FILETYPE_FFS_PAD               0xf0
/// 
/// FFS File Attributes.
/// 
#define FFS_ATTRIB_LARGE_FILE         0x01
#define FFS_ATTRIB_FIXED              0x04
#define FFS_ATTRIB_DATA_ALIGNMENT     0x38
#define FFS_ATTRIB_CHECKSUM           0x40

/// 
/// FFS File State Bits.
/// 
#define EFI_FILE_HEADER_CONSTRUCTION  0x01
#define EFI_FILE_HEADER_VALID         0x02
#define EFI_FILE_DATA_VALID           0x04
#define EFI_FILE_MARKED_FOR_UPDATE    0x08
#define EFI_FILE_DELETED              0x10
#define EFI_FILE_HEADER_INVALID       0x20


///
/// Each file begins with the header that describe the 
/// contents and state of the files.
/// 
typedef struct {
  ///
  /// This GUID is the file name. It is used to uniquely identify the file.
  ///
  EFI_GUID                Name;
  ///
  /// Used to verify the integrity of the file.
  ///
  EFI_FFS_INTEGRITY_CHECK IntegrityCheck;
  ///
  /// Identifies the type of file.
  ///
  EFI_FV_FILETYPE         Type;
  ///
  /// Declares various file attribute bits.
  ///
  EFI_FFS_FILE_ATTRIBUTES Attributes;
  ///
  /// The length of the file in bytes, including the FFS header.
  ///
  UINT8                   Size[3];
  ///
  /// Used to track the state of the file throughout the life of the file from creation to deletion.
  ///
  EFI_FFS_FILE_STATE      State;
} EFI_FFS_FILE_HEADER;

typedef struct {
  ///
  /// This GUID is the file name. It is used to uniquely identify the file. There may be only
  /// one instance of a file with the file name GUID of Name in any given firmware
  /// volume, except if the file type is EFI_FV_FILETYPE_FFS_PAD.
  ///
  EFI_GUID                  Name;
  
  ///
  /// Used to verify the integrity of the file.
  ///  
  EFI_FFS_INTEGRITY_CHECK   IntegrityCheck;
  
  ///
  /// Identifies the type of file.
  ///  
  EFI_FV_FILETYPE           Type;
  
  ///
  /// Declares various file attribute bits.
  ///  
  EFI_FFS_FILE_ATTRIBUTES   Attributes;
  
  ///
  /// The length of the file in bytes, including the FFS header.
  /// The length of the file data is either (Size - sizeof(EFI_FFS_FILE_HEADER)). This calculation means a
  /// zero-length file has a Size of 24 bytes, which is sizeof(EFI_FFS_FILE_HEADER).
  /// Size is not required to be a multiple of 8 bytes. Given a file F, the next file header is
  /// located at the next 8-byte aligned firmware volume offset following the last byte of the file F.
  ///
  UINT8                     Size[3];
  
  ///
  /// Used to track the state of the file throughout the life of the file from creation to deletion.
  ///
  EFI_FFS_FILE_STATE        State;
  
  ///
  /// If FFS_ATTRIB_LARGE_FILE is set in Attributes, then ExtendedSize exists and Size must be set to zero.
  /// If FFS_ATTRIB_LARGE_FILE is not set then EFI_FFS_FILE_HEADER is used.
  ///
  EFI_FFS_FILE_STATE        ExtendedSize;
} EFI_FFS_FILE_HEADER2;

typedef UINT8 EFI_SECTION_TYPE;

///
/// Pseudo type. It is used as a wild card when retrieving sections.
///  The section type EFI_SECTION_ALL matches all section types.
///
#define EFI_SECTION_ALL                   0x00

///
/// Encapsulation section Type values.
///
#define EFI_SECTION_COMPRESSION           0x01

#define EFI_SECTION_GUID_DEFINED          0x02

#define EFI_SECTION_DISPOSABLE            0x03

///
/// Leaf section Type values.
///
#define EFI_SECTION_PE32                  0x10
#define EFI_SECTION_PIC                   0x11
#define EFI_SECTION_TE                    0x12
#define EFI_SECTION_DXE_DEPEX             0x13
#define EFI_SECTION_VERSION               0x14
#define EFI_SECTION_USER_INTERFACE        0x15
#define EFI_SECTION_COMPATIBILITY16       0x16
#define EFI_SECTION_FIRMWARE_VOLUME_IMAGE 0x17
#define EFI_SECTION_FREEFORM_SUBTYPE_GUID 0x18
#define EFI_SECTION_RAW                   0x19
#define EFI_SECTION_PEI_DEPEX             0x1B
#define EFI_SECTION_SMM_DEPEX             0x1C

///
/// Common section header.
/// 
typedef struct {
  ///
  /// A 24-bit unsigned integer that contains the total size of the section in bytes, 
  /// including the EFI_COMMON_SECTION_HEADER.
  ///
  UINT8             Size[3];
  EFI_SECTION_TYPE  Type;
  ///
  /// Declares the section type.
  ///
} EFI_COMMON_SECTION_HEADER;

typedef struct {
  ///
  /// A 24-bit unsigned integer that contains the total size of the section in bytes, 
  /// including the EFI_COMMON_SECTION_HEADER.
  ///
  UINT8             Size[3];
  
  EFI_SECTION_TYPE  Type;
  
  ///
  /// If Size is 0xFFFFFF, then ExtendedSize contains the size of the section. If
  /// Size is not equal to 0xFFFFFF, then this field does not exist.  
  ///
  UINT32            ExtendedSize;
} EFI_COMMON_SECTION_HEADER2;

///
/// Leaf section type that contains an 
/// IA-32 16-bit executable image.
/// 
typedef EFI_COMMON_SECTION_HEADER  EFI_COMPATIBILITY16_SECTION;
typedef EFI_COMMON_SECTION_HEADER2 EFI_COMPATIBILITY16_SECTION2;

///
/// CompressionType of EFI_COMPRESSION_SECTION.
/// 
#define EFI_NOT_COMPRESSED        0x00
#define EFI_STANDARD_COMPRESSION  0x01
///
/// An encapsulation section type in which the 
/// section data is compressed.
/// 
typedef struct {
  ///
  /// Usual common section header. CommonHeader.Type = EFI_SECTION_COMPRESSION.
  ///
  EFI_COMMON_SECTION_HEADER   CommonHeader;
  ///
  /// The UINT32 that indicates the size of the section data after decompression.
  ///
  UINT32                      UncompressedLength;
  ///
  /// Indicates which compression algorithm is used.
  ///
  UINT8                       CompressionType;
} EFI_COMPRESSION_SECTION;

typedef struct {
  ///
  /// Usual common section header. CommonHeader.Type = EFI_SECTION_COMPRESSION.
  ///
  EFI_COMMON_SECTION_HEADER2    CommonHeader;
  ///
  /// UINT32 that indicates the size of the section data after decompression.
  ///
  UINT32                        UncompressedLength;
  ///
  /// Indicates which compression algorithm is used.
  ///
  UINT8                         CompressionType;
} EFI_COMPRESSION_SECTION2;

///
/// An encapsulation section type in which the section data is disposable.
/// A disposable section is an encapsulation section in which the section data may be disposed of during
/// the process of creating or updating a firmware image without significant impact on the usefulness of
/// the file. The Type field in the section header is set to EFI_SECTION_DISPOSABLE. This
/// allows optional or descriptive data to be included with the firmware file which can be removed in
/// order to conserve space. The contents of this section are implementation specific, but might contain
/// debug data or detailed integration instructions.
///
typedef EFI_COMMON_SECTION_HEADER   EFI_DISPOSABLE_SECTION;
typedef EFI_COMMON_SECTION_HEADER2  EFI_DISPOSABLE_SECTION2;

///
/// The leaf section which could be used to determine the dispatch order of DXEs.
/// 
typedef EFI_COMMON_SECTION_HEADER   EFI_DXE_DEPEX_SECTION;
typedef EFI_COMMON_SECTION_HEADER2  EFI_DXE_DEPEX_SECTION2;

///
/// The leaf section which contains a PI FV.
/// 
typedef EFI_COMMON_SECTION_HEADER   EFI_FIRMWARE_VOLUME_IMAGE_SECTION;
typedef EFI_COMMON_SECTION_HEADER2  EFI_FIRMWARE_VOLUME_IMAGE_SECTION2;

///
/// The leaf section which contains a single GUID.
/// 
typedef struct {
  ///
  /// Common section header. CommonHeader.Type = EFI_SECTION_FREEFORM_SUBTYPE_GUID.
  ///
  EFI_COMMON_SECTION_HEADER   CommonHeader;
  ///
  /// This GUID is defined by the creator of the file. It is a vendor-defined file type.
  ///
  EFI_GUID                    SubTypeGuid;
} EFI_FREEFORM_SUBTYPE_GUID_SECTION;

typedef struct {
  ///
  /// The common section header. CommonHeader.Type = EFI_SECTION_FREEFORM_SUBTYPE_GUID.
  ///
  EFI_COMMON_SECTION_HEADER2    CommonHeader;
  ///
  /// This GUID is defined by the creator of the file. It is a vendor-defined file type.
  ///  
  EFI_GUID                      SubTypeGuid;
} EFI_FREEFORM_SUBTYPE_GUID_SECTION2;

///
/// Attributes of EFI_GUID_DEFINED_SECTION.
/// 
#define EFI_GUIDED_SECTION_PROCESSING_REQUIRED  0x01
#define EFI_GUIDED_SECTION_AUTH_STATUS_VALID    0x02
///
/// The leaf section which is encapsulation defined by specific GUID.
/// 
typedef struct {
  ///
  /// The common section header. CommonHeader.Type = EFI_SECTION_GUID_DEFINED.
  ///
  EFI_COMMON_SECTION_HEADER   CommonHeader;
  ///
  /// The GUID that defines the format of the data that follows. It is a vendor-defined section type.
  ///
  EFI_GUID                    SectionDefinitionGuid;
  ///
  /// Contains the offset in bytes from the beginning of the common header to the first byte of the data.
  ///
  UINT16                      DataOffset;
  ///
  /// The bit field that declares some specific characteristics of the section contents.
  ///
  UINT16                      Attributes;
} EFI_GUID_DEFINED_SECTION;

typedef struct {
  ///
  /// The common section header. CommonHeader.Type = EFI_SECTION_GUID_DEFINED.
  ///
  EFI_COMMON_SECTION_HEADER2    CommonHeader;
  ///
  /// The GUID that defines the format of the data that follows. It is a vendor-defined section type.
  ///  
  EFI_GUID                      SectionDefinitionGuid;
  ///
  /// Contains the offset in bytes from the beginning of the common header to the first byte of the data.
  ///  
  UINT16                        DataOffset;
  ///
  /// The bit field that declares some specific characteristics of the section contents.
  ///  
  UINT16                        Attributes;
} EFI_GUID_DEFINED_SECTION2;

///
/// The leaf section which contains PE32+ image.
/// 
typedef EFI_COMMON_SECTION_HEADER   EFI_PE32_SECTION;
typedef EFI_COMMON_SECTION_HEADER2  EFI_PE32_SECTION2;

///
/// The leaf section used to determine the dispatch order of PEIMs.
/// 
typedef EFI_COMMON_SECTION_HEADER   EFI_PEI_DEPEX_SECTION;
typedef EFI_COMMON_SECTION_HEADER2  EFI_PEI_DEPEX_SECTION2;

///
/// A leaf section type that contains a position-independent-code (PIC) image.
/// A PIC image section is a leaf section that contains a position-independent-code (PIC) image.
/// In addition to normal PE32+ images that contain relocation information, PEIM executables may be
/// PIC and are referred to as PIC images. A PIC image is the same as a PE32+ image except that all
/// relocation information has been stripped from the image and the image can be moved and will
/// execute correctly without performing any relocation or other fix-ups. EFI_PIC_SECTION2 must
/// be used if the section is 16MB or larger.
///
typedef EFI_COMMON_SECTION_HEADER   EFI_PIC_SECTION;
typedef EFI_COMMON_SECTION_HEADER2  EFI_PIC_SECTION2;

///
/// The leaf section which constains the position-independent-code image.
/// 
typedef EFI_COMMON_SECTION_HEADER   EFI_TE_SECTION;
typedef EFI_COMMON_SECTION_HEADER2  EFI_TE_SECTION2;

///
/// The leaf section which contains an array of zero or more bytes.
/// 
typedef EFI_COMMON_SECTION_HEADER   EFI_RAW_SECTION;
typedef EFI_COMMON_SECTION_HEADER2  EFI_RAW_SECTION2;

/// 
/// The SMM dependency expression section is a leaf section that contains a dependency expression that
/// is used to determine the dispatch order for SMM drivers. Before the SMRAM invocation of the
/// SMM driver's entry point, this dependency expression must evaluate to TRUE. See the Platform
/// Initialization Specification, Volume 2, for details regarding the format of the dependency expression.
/// The dependency expression may refer to protocols installed in either the UEFI or the SMM protocol
/// database. EFI_SMM_DEPEX_SECTION2 must be used if the section is 16MB or larger.
/// 
typedef EFI_COMMON_SECTION_HEADER EFI_SMM_DEPEX_SECTION;
typedef EFI_COMMON_SECTION_HEADER2 EFI_SMM_DEPEX_SECTION2;

///
/// The leaf section which contains a unicode string that 
/// is human readable file name.
/// 
typedef struct {
  EFI_COMMON_SECTION_HEADER   CommonHeader;

  ///
  /// Array of unicode string.
  /// 
  CHAR16                      FileNameString[1];
} EFI_USER_INTERFACE_SECTION;

typedef struct {
  EFI_COMMON_SECTION_HEADER2    CommonHeader;
  CHAR16                        FileNameString[1];
} EFI_USER_INTERFACE_SECTION2;

///
/// The leaf section which contains a numeric build number and
/// an optional unicode string that represents the file revision. 
/// 
typedef struct {
  EFI_COMMON_SECTION_HEADER   CommonHeader;
  UINT16                      BuildNumber;

  ///
  /// Array of unicode string.
  /// 
  CHAR16                      VersionString[1];
} EFI_VERSION_SECTION;

typedef struct {
  EFI_COMMON_SECTION_HEADER2    CommonHeader;
  ///
  /// A UINT16 that represents a particular build. Subsequent builds have monotonically
  /// increasing build numbers relative to earlier builds.
  ///
  UINT16                        BuildNumber;
  CHAR16                        VersionString[1];
} EFI_VERSION_SECTION2;

#define SECTION_SIZE(SectionHeaderPtr) \
    ((UINT32) (*((UINT32 *) ((EFI_COMMON_SECTION_HEADER *) SectionHeaderPtr)->Size) & 0x00ffffff))

#pragma pack()

#endif