Update DxeCore and FwVolDxe drivers to inherit authentication status for the FV image...

[mirror_edk2.git] / IntelFrameworkModulePkg / Universal / FirmwareVolume / FwVolDxe / FwVolDriver.h

/** @file\r
  Common defines and definitions for a FwVolDxe driver.\r
\r
  Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r
\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions\r
  of the BSD License which accompanies this distribution.  The\r
  full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef _FWVOL_DRIVER_H_\r
#define _FWVOL_DRIVER_H_\r
\r
#include <PiDxe.h>\r
\r
#include <Guid/FirmwareFileSystem2.h>\r
#include <Guid/FirmwareFileSystem3.h>\r
#include <Protocol/SectionExtraction.h>\r
#include <Protocol/FaultTolerantWrite.h>\r
#include <Protocol/FirmwareVolume2.h>\r
#include <Protocol/FirmwareVolumeBlock.h>\r
\r
#include <Library/DebugLib.h>\r
#include <Library/UefiDriverEntryPoint.h>\r
#include <Library/UefiLib.h>\r
#include <Library/BaseLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
\r
#define FV_DEVICE_SIGNATURE           SIGNATURE_32 ('_', 'F', 'V', '_')\r
\r
//\r
// Define two helper macro to extract the Capability field or Status field in FVB\r
// bit fields\r
//\r
#define EFI_FVB2_CAPABILITIES (EFI_FVB2_READ_DISABLED_CAP | \\r
                              EFI_FVB2_READ_ENABLED_CAP | \\r
                              EFI_FVB2_WRITE_DISABLED_CAP | \\r
                              EFI_FVB2_WRITE_ENABLED_CAP | \\r
                              EFI_FVB2_LOCK_CAP \\r
                              )\r
\r
#define EFI_FVB2_STATUS (EFI_FVB2_READ_STATUS | EFI_FVB2_WRITE_STATUS | EFI_FVB2_LOCK_STATUS)\r
\r
#define MAX_FILES 32\r
\r
//\r
// Used to caculate from address -> Lba\r
//\r
typedef struct {\r
  LIST_ENTRY      Link;\r
  EFI_LBA         LbaIndex;\r
  UINT8           *StartingAddress;\r
  UINTN           BlockLength;\r
} LBA_ENTRY;\r
\r
//\r
// Used to track free space in the Fv\r
//\r
typedef struct {\r
  LIST_ENTRY      Link;\r
  UINT8           *StartingAddress;\r
  UINTN           Length;\r
} FREE_SPACE_ENTRY;\r
\r
//\r
// Used to track all non-deleted files\r
//\r
typedef struct {\r
  LIST_ENTRY      Link;\r
  UINT8           *FfsHeader;\r
} FFS_FILE_LIST_ENTRY;\r
\r
typedef struct {\r
  UINTN                               Signature;\r
  EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL  *Fvb;\r
  EFI_FIRMWARE_VOLUME2_PROTOCOL       Fv;\r
  EFI_FIRMWARE_VOLUME_HEADER          *FwVolHeader;\r
  UINT8                               *Key;\r
  EFI_HANDLE                          Handle;\r
\r
  UINT8                               ErasePolarity;\r
  EFI_PHYSICAL_ADDRESS                CachedFv;\r
  LIST_ENTRY                          LbaHeader;\r
  LIST_ENTRY                          FreeSpaceHeader;\r
  LIST_ENTRY                          FfsFileListHeader;\r
\r
  FFS_FILE_LIST_ENTRY                 *CurrentFfsFile;\r
  BOOLEAN                             IsFfs3Fv;\r
  UINT32                              AuthenticationStatus;\r
} FV_DEVICE;\r
\r
#define FV_DEVICE_FROM_THIS(a)  CR (a, FV_DEVICE, Fv, FV_DEVICE_SIGNATURE)\r
\r
/**\r
  Retrieves attributes, insures positive polarity of attribute bits, returns\r
  resulting attributes in output parameter.\r
\r
  @param  This             Calling context\r
  @param  Attributes       output buffer which contains attributes\r
\r
  @retval EFI_SUCCESS      Successfully got volume attributes\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvGetVolumeAttributes (\r
  IN  CONST EFI_FIRMWARE_VOLUME2_PROTOCOL  *This,\r
  OUT EFI_FV_ATTRIBUTES             *Attributes\r
  );\r
\r
/**\r
  Sets current attributes for volume.\r
\r
  @param  This          Calling context\r
  @param  Attributes    On input, FvAttributes is a pointer to\r
                        an EFI_FV_ATTRIBUTES containing the\r
                        desired firmware volume settings. On\r
                        successful return, it contains the new\r
                        settings of the firmware volume. On\r
                        unsuccessful return, FvAttributes is not\r
                        modified and the firmware volume\r
                        settings are not changed.\r
  \r
  @retval EFI_SUCCESS             The requested firmware volume attributes\r
                                  were set and the resulting\r
                                  EFI_FV_ATTRIBUTES is returned in\r
                                  FvAttributes.\r
  @retval EFI_ACCESS_DENIED       Atrribute is locked down.\r
  @retval EFI_INVALID_PARAMETER   Atrribute is not valid.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvSetVolumeAttributes (\r
  IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL   *This,\r
  IN OUT EFI_FV_ATTRIBUTES          *Attributes\r
  );\r
\r
/**\r
  Given the input key, search for the next matching file in the volume.\r
\r
  @param  This                       Indicates the calling context.\r
  @param  Key                        Key is a pointer to a caller allocated\r
                                     buffer that contains implementation specific\r
                                     data that is used to track where to begin\r
                                     the search for the next file. The size of\r
                                     the buffer must be at least This->KeySize\r
                                     bytes long. To reinitialize the search and\r
                                     begin from the beginning of the firmware\r
                                     volume, the entire buffer must be cleared to\r
                                     zero. Other than clearing the buffer to\r
                                     initiate a new search, the caller must not\r
                                     modify the data in the buffer between calls\r
                                     to GetNextFile().\r
  @param  FileType                   FileType is a pointer to a caller allocated\r
                                     EFI_FV_FILETYPE. The GetNextFile() API can\r
                                     filter it's search for files based on the\r
                                     value of *FileType input. A *FileType input\r
                                     of 0 causes GetNextFile() to search for\r
                                     files of all types.  If a file is found, the\r
                                     file's type is returned in *FileType.\r
                                     *FileType is not modified if no file is\r
                                     found.\r
  @param  NameGuid                   NameGuid is a pointer to a caller allocated\r
                                     EFI_GUID. If a file is found, the file's\r
                                     name is returned in *NameGuid.  *NameGuid is\r
                                     not modified if no file is found.\r
  @param  Attributes                 Attributes is a pointer to a caller\r
                                     allocated EFI_FV_FILE_ATTRIBUTES.  If a file\r
                                     is found, the file's attributes are returned\r
                                     in *Attributes. *Attributes is not modified\r
                                     if no file is found.\r
  @param  Size                       Size is a pointer to a caller allocated\r
                                     UINTN. If a file is found, the file's size\r
                                     is returned in *Size. *Size is not modified\r
                                     if no file is found.\r
\r
  @retval EFI_SUCCESS                Successfully find the file.\r
  @retval EFI_DEVICE_ERROR           Device error.\r
  @retval EFI_ACCESS_DENIED          Fv could not read.\r
  @retval EFI_NOT_FOUND              No matching file found.\r
  @retval EFI_INVALID_PARAMETER      Invalid parameter\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvGetNextFile (\r
  IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL   *This,\r
  IN OUT VOID                       *Key,\r
  IN OUT EFI_FV_FILETYPE            *FileType,\r
  OUT EFI_GUID                      *NameGuid,\r
  OUT EFI_FV_FILE_ATTRIBUTES        *Attributes,\r
  OUT UINTN                         *Size\r
  );\r
\r
/**\r
  Locates a file in the firmware volume and\r
  copies it to the supplied buffer.\r
\r
  @param  This                       Indicates the calling context.\r
  @param  NameGuid                   Pointer to an EFI_GUID, which is the\r
                                     filename.\r
  @param  Buffer                     Buffer is a pointer to pointer to a buffer\r
                                     in which the file or section contents or are\r
                                     returned.\r
  @param  BufferSize                 BufferSize is a pointer to caller allocated\r
                                     UINTN. On input *BufferSize indicates the\r
                                     size in bytes of the memory region pointed\r
                                     to by Buffer. On output, *BufferSize\r
                                     contains the number of bytes required to\r
                                     read the file.\r
  @param  FoundType                  FoundType is a pointer to a caller allocated\r
                                     EFI_FV_FILETYPE that on successful return\r
                                     from Read() contains the type of file read.\r
                                     This output reflects the file type\r
                                     irrespective of the value of the SectionType\r
                                     input.\r
  @param  FileAttributes             FileAttributes is a pointer to a caller\r
                                     allocated EFI_FV_FILE_ATTRIBUTES.  On\r
                                     successful return from Read(),\r
                                     *FileAttributes contains the attributes of\r
                                     the file read.\r
  @param  AuthenticationStatus       AuthenticationStatus is a pointer to a\r
                                     caller allocated UINTN in which the\r
                                     authentication status is returned.\r
\r
  @retval EFI_SUCCESS                Successfully read to memory buffer.\r
  @retval EFI_WARN_BUFFER_TOO_SMALL  Buffer too small.\r
  @retval EFI_NOT_FOUND              Not found.\r
  @retval EFI_DEVICE_ERROR           Device error.\r
  @retval EFI_ACCESS_DENIED          Could not read.\r
  @retval EFI_INVALID_PARAMETER      Invalid parameter.\r
  @retval EFI_OUT_OF_RESOURCES       Not enough buffer to be allocated.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvReadFile (\r
  IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL   *This,\r
  IN CONST EFI_GUID                       *NameGuid,\r
  IN OUT VOID                       **Buffer,\r
  IN OUT UINTN                      *BufferSize,\r
  OUT EFI_FV_FILETYPE               *FoundType,\r
  OUT EFI_FV_FILE_ATTRIBUTES        *FileAttributes,\r
  OUT UINT32                        *AuthenticationStatus\r
  );\r
\r
/**\r
  Locates a section in a given FFS File and\r
  copies it to the supplied buffer (not including section header).\r
\r
  @param  This                       Indicates the calling context.\r
  @param  NameGuid                   Pointer to an EFI_GUID, which is the\r
                                     filename.\r
  @param  SectionType                Indicates the section type to return.\r
  @param  SectionInstance            Indicates which instance of sections with a\r
                                     type of SectionType to return.\r
  @param  Buffer                     Buffer is a pointer to pointer to a buffer\r
                                     in which the file or section contents or are\r
                                     returned.\r
  @param  BufferSize                 BufferSize is a pointer to caller allocated\r
                                     UINTN.\r
  @param  AuthenticationStatus       AuthenticationStatus is a pointer to a\r
                                     caller allocated UINT32 in which the\r
                                     authentication status is returned.\r
\r
  @retval EFI_SUCCESS                Successfully read the file section into\r
                                     buffer.\r
  @retval EFI_WARN_BUFFER_TOO_SMALL  Buffer too small.\r
  @retval EFI_NOT_FOUND              Section not found.\r
  @retval EFI_DEVICE_ERROR           Device error.\r
  @retval EFI_ACCESS_DENIED          Could not read.\r
  @retval EFI_INVALID_PARAMETER      Invalid parameter.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvReadFileSection (\r
  IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL   *This,\r
  IN CONST EFI_GUID                       *NameGuid,\r
  IN EFI_SECTION_TYPE               SectionType,\r
  IN UINTN                          SectionInstance,\r
  IN OUT VOID                       **Buffer,\r
  IN OUT UINTN                      *BufferSize,\r
  OUT UINT32                        *AuthenticationStatus\r
  );\r
\r
/**\r
  Writes one or more files to the firmware volume.\r
\r
  @param  This                   Indicates the calling context.\r
  @param  NumberOfFiles          Number of files.\r
  @param  WritePolicy            WritePolicy indicates the level of reliability\r
                                 for the write in the event of a power failure or\r
                                 other system failure during the write operation.\r
  @param  FileData               FileData is an pointer to an array of\r
                                 EFI_FV_WRITE_DATA. Each element of array\r
                                 FileData represents a file to be written.\r
\r
  @retval EFI_SUCCESS            Files successfully written to firmware volume\r
  @retval EFI_OUT_OF_RESOURCES   Not enough buffer to be allocated.\r
  @retval EFI_DEVICE_ERROR       Device error.\r
  @retval EFI_WRITE_PROTECTED    Write protected.\r
  @retval EFI_NOT_FOUND          Not found.\r
  @retval EFI_INVALID_PARAMETER  Invalid parameter.\r
  @retval EFI_UNSUPPORTED        This function not supported.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvWriteFile (\r
  IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL   *This,\r
  IN UINT32                         NumberOfFiles,\r
  IN EFI_FV_WRITE_POLICY            WritePolicy,\r
  IN EFI_FV_WRITE_FILE_DATA         *FileData\r
  );\r
\r
/**\r
  Return information of type InformationType for the requested firmware\r
  volume.\r
\r
  @param This             Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.\r
  @param InformationType  InformationType for requested.\r
  @param BufferSize       On input, size of Buffer.On output, the amount of\r
                          data returned in Buffer.\r
  @param Buffer           A poniter to the data buffer to return.\r
\r
  @return EFI_UNSUPPORTED Could not get.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvGetVolumeInfo (\r
  IN  CONST EFI_FIRMWARE_VOLUME2_PROTOCOL       *This,\r
  IN  CONST EFI_GUID                            *InformationType,\r
  IN OUT UINTN                                  *BufferSize,\r
  OUT VOID                                      *Buffer\r
  );\r
\r
\r
/**\r
  Set information with InformationType into the requested firmware volume.\r
\r
  @param  This             Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.\r
  @param  InformationType  InformationType for requested.\r
  @param  BufferSize       Size of Buffer data.\r
  @param  Buffer           A poniter to the data buffer to be set.\r
\r
  @retval EFI_UNSUPPORTED  Could not set.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
FvSetVolumeInfo (\r
  IN  CONST EFI_FIRMWARE_VOLUME2_PROTOCOL       *This,\r
  IN  CONST EFI_GUID                            *InformationType,\r
  IN  UINTN                                     BufferSize,\r
  IN CONST  VOID                                *Buffer\r
  );\r
\r
/**\r
  Writes data beginning at Lba:Offset from FV. The write terminates either\r
  when *NumBytes of data have been written, or when the firmware end is\r
  reached.  *NumBytes is updated to reflect the actual number of bytes\r
  written.\r
\r
  @param FvDevice        Cached Firmware Volume\r
  @param Offset          Offset in the block at which to begin write\r
  @param NumBytes        At input, indicates the requested write size.\r
                         At output, indicates the actual number of bytes written.\r
  @param Buffer          Buffer containing source data for the write.\r
\r
  @retval EFI_SUCCESS  Data is successfully written into FV.\r
  @return error        Data is failed written.\r
\r
**/\r
EFI_STATUS\r
FvcWrite (\r
  IN     FV_DEVICE                            *FvDevice,\r
  IN     UINTN                                Offset,\r
  IN OUT UINTN                                *NumBytes,\r
  IN     UINT8                                *Buffer\r
  );\r
\r
\r
/**\r
  Check if a block of buffer is erased.\r
\r
  @param  ErasePolarity  Erase polarity attribute of the firmware volume\r
  @param  Buffer         The buffer to be checked\r
  @param  BufferSize     Size of the buffer in bytes\r
\r
  @retval TRUE           The block of buffer is erased\r
  @retval FALSE          The block of buffer is not erased\r
\r
**/\r
BOOLEAN\r
IsBufferErased (\r
  IN UINT8    ErasePolarity,\r
  IN UINT8    *Buffer,\r
  IN UINTN    BufferSize\r
  );\r
\r
/**\r
  Get the FFS file state by checking the highest bit set in the header's state field.\r
\r
  @param  ErasePolarity  Erase polarity attribute of the firmware volume\r
  @param  FfsHeader      Points to the FFS file header\r
\r
  @return FFS File state\r
\r
**/\r
EFI_FFS_FILE_STATE\r
GetFileState (\r
  IN UINT8                ErasePolarity,\r
  IN EFI_FFS_FILE_HEADER  *FfsHeader\r
  );\r
\r
/**\r
  Verify checksum of the firmware volume header.\r
\r
  @param  FvHeader       Points to the firmware volume header to be checked\r
\r
  @retval TRUE           Checksum verification passed\r
  @retval FALSE          Checksum verification failed\r
\r
**/\r
BOOLEAN\r
VerifyFvHeaderChecksum (\r
  IN EFI_FIRMWARE_VOLUME_HEADER *FvHeader\r
  );\r
\r
/**\r
  Check if it's a valid FFS file header.\r
\r
  @param  ErasePolarity  Erase polarity attribute of the firmware volume\r
  @param  FfsHeader      Points to the FFS file header to be checked\r
\r
  @retval TRUE           Valid FFS file header\r
  @retval FALSE          Invalid FFS file header\r
\r
**/\r
BOOLEAN\r
IsValidFFSHeader (\r
  IN UINT8                ErasePolarity,\r
  IN EFI_FFS_FILE_HEADER  *FfsHeader\r
  );\r
\r
/**\r
  Check if it's a valid FFS file.\r
  Here we are sure that it has a valid FFS file header since we must call IsValidFfsHeader() first.\r
\r
  @param  FvDevice       Cached FV image.\r
  @param  FfsHeader      Points to the FFS file to be checked\r
\r
  @retval TRUE           Valid FFS file\r
  @retval FALSE          Invalid FFS file\r
\r
**/\r
BOOLEAN\r
IsValidFFSFile (\r
  IN FV_DEVICE            *FvDevice,\r
  IN EFI_FFS_FILE_HEADER  *FfsHeader\r
  );\r
\r
/**\r
  Given the supplied FW_VOL_BLOCK_PROTOCOL, allocate a buffer for output and\r
  copy the real length volume header into it.\r
\r
  @param  Fvb                   The FW_VOL_BLOCK_PROTOCOL instance from which to\r
                                read the volume header\r
  @param  FwVolHeader           Pointer to pointer to allocated buffer in which\r
                                the volume header is returned.\r
\r
  @retval EFI_OUT_OF_RESOURCES  No enough buffer could be allocated.\r
  @retval EFI_SUCCESS           Successfully read volume header to the allocated\r
                                buffer.\r
  @retval EFI_ACCESS_DENIED     Read status of FV is not enabled.\r
**/\r
EFI_STATUS\r
GetFwVolHeader (\r
  IN     EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL     *Fvb,\r
  OUT EFI_FIRMWARE_VOLUME_HEADER                **FwVolHeader\r
  );\r
\r
/**\r
  Convert the Buffer Address to LBA Entry Address.\r
\r
  @param FvDevice        Cached FvDevice\r
  @param BufferAddress   Address of Buffer\r
  @param LbaListEntry    Pointer to the got LBA entry that contains the address.\r
\r
  @retval EFI_NOT_FOUND  Buffer address is out of FvDevice.\r
  @retval EFI_SUCCESS    LBA entry is found for Buffer address.\r
\r
**/\r
EFI_STATUS\r
Buffer2LbaEntry (\r
  IN     FV_DEVICE              *FvDevice,\r
  IN     EFI_PHYSICAL_ADDRESS   BufferAddress,\r
  OUT LBA_ENTRY                 **LbaListEntry\r
  );\r
\r
/**\r
  Convert the Buffer Address to LBA Address & Offset.\r
\r
  @param FvDevice        Cached FvDevice\r
  @param BufferAddress   Address of Buffer\r
  @param Lba             Pointer to the gob Lba value\r
  @param Offset          Pointer to the got Offset\r
\r
  @retval EFI_NOT_FOUND  Buffer address is out of FvDevice.\r
  @retval EFI_SUCCESS    LBA and Offset is found for Buffer address.\r
\r
**/\r
EFI_STATUS\r
Buffer2Lba (\r
  IN     FV_DEVICE              *FvDevice,\r
  IN     EFI_PHYSICAL_ADDRESS   BufferAddress,\r
  OUT EFI_LBA                   *Lba,\r
  OUT UINTN                     *Offset\r
  );\r
\r
/**\r
  Set File State in the FfsHeader.\r
\r
  @param  State          File state to be set into FFS header.\r
  @param  FfsHeader      Points to the FFS file header\r
\r
**/\r
VOID\r
SetFileState (\r
  IN UINT8                State,\r
  IN EFI_FFS_FILE_HEADER  *FfsHeader\r
  );\r
\r
/**\r
  Create a PAD File in the Free Space.\r
\r
  @param FvDevice        Firmware Volume Device.\r
  @param FreeSpaceEntry  Indicating in which Free Space(Cache) the Pad file will be inserted.\r
  @param Size            Pad file Size, not include the header.\r
  @param PadFileEntry    The Ffs File Entry that points to this Pad File.\r
\r
  @retval EFI_SUCCESS            Successfully create a PAD file.\r
  @retval EFI_OUT_OF_RESOURCES   No enough free space to create a PAD file.\r
  @retval EFI_INVALID_PARAMETER  Size is not 8 byte alignment.\r
  @retval EFI_DEVICE_ERROR       Free space is not erased.\r
**/\r
EFI_STATUS\r
FvCreatePadFileInFreeSpace (\r
  IN  FV_DEVICE           *FvDevice,\r
  IN  FREE_SPACE_ENTRY    *FreeSpaceEntry,\r
  IN  UINTN               Size,\r
  OUT FFS_FILE_LIST_ENTRY **PadFileEntry\r
  );\r
\r
/**\r
  Create a new file within a PAD file area.\r
\r
  @param FvDevice        Firmware Volume Device.\r
  @param FfsFileBuffer   A buffer that holds an FFS file,(it contains a File Header which is in init state).\r
  @param BufferSize      The size of FfsFileBuffer.\r
  @param ActualFileSize  The actual file length, it may not be multiples of 8.\r
  @param FileName        The FFS File Name.\r
  @param FileType        The FFS File Type.\r
  @param FileAttributes  The Attributes of the FFS File to be created.\r
\r
  @retval EFI_SUCCESS           Successfully create a new file within the found PAD file area.\r
  @retval EFI_OUT_OF_RESOURCES  No suitable PAD file is found.\r
  @retval other errors          New file is created failed.\r
\r
**/\r
EFI_STATUS\r
FvCreateNewFileInsidePadFile (\r
  IN  FV_DEVICE               *FvDevice,\r
  IN  UINT8                   *FfsFileBuffer,\r
  IN  UINTN                   BufferSize,\r
  IN  UINTN                   ActualFileSize,\r
  IN  EFI_GUID                *FileName,\r
  IN  EFI_FV_FILETYPE         FileType,\r
  IN  EFI_FV_FILE_ATTRIBUTES  FileAttributes\r
  );\r
\r
/**\r
  Write multiple files into FV in reliable method.\r
\r
  @param FvDevice        Firmware Volume Device.\r
  @param NumOfFiles      Total File number to be written.\r
  @param FileData        The array of EFI_FV_WRITE_FILE_DATA structure, \r
                         used to get name, attributes, type, etc\r
  @param FileOperation   The array of operation for each file.\r
\r
  @retval EFI_SUCCESS            Files are added into FV.\r
  @retval EFI_OUT_OF_RESOURCES   No enough free PAD files to add the input files.\r
  @retval EFI_INVALID_PARAMETER  File number is less than or equal to 1.\r
  @retval EFI_UNSUPPORTED        File number exceeds the supported max numbers of files.\r
\r
**/\r
EFI_STATUS\r
FvCreateMultipleFiles (\r
  IN  FV_DEVICE               *FvDevice,\r
  IN  UINTN                   NumOfFiles,\r
  IN  EFI_FV_WRITE_FILE_DATA  *FileData,\r
  IN  BOOLEAN                 *FileOperation\r
  );\r
\r
/**\r
  Caculate the checksum for the FFS header.\r
\r
  @param FfsHeader   FFS File Header which needs to caculate the checksum\r
\r
**/\r
VOID\r
SetHeaderChecksum (\r
  IN EFI_FFS_FILE_HEADER *FfsHeader\r
  );\r
\r
/**\r
  Caculate the checksum for the FFS File.\r
\r
  @param FfsHeader       FFS File Header which needs to caculate the checksum\r
  @param ActualFileSize  The whole Ffs File Length.\r
\r
**/\r
VOID\r
SetFileChecksum (\r
  IN EFI_FFS_FILE_HEADER *FfsHeader,\r
  IN UINTN               ActualFileSize\r
  );\r
\r
/**\r
  Get the alignment value from File Attributes.\r
\r
  @param FfsAttributes  FFS attribute\r
\r
  @return Alignment value.\r
\r
**/\r
UINTN\r
GetRequiredAlignment (\r
  IN EFI_FV_FILE_ATTRIBUTES FfsAttributes\r
  );\r
\r
/**\r
  Locate Pad File for writing, this is got from FV Cache.\r
\r
  @param FvDevice           Cached Firmware Volume.\r
  @param Size               The required FFS file size.\r
  @param RequiredAlignment  FFS File Data alignment requirement.\r
  @param PadSize            Pointer to the size of leading Pad File.\r
  @param PadFileEntry       Pointer to the Pad File Entry that meets the requirement.\r
\r
  @retval EFI_SUCCESS     The required pad file is found.\r
  @retval EFI_NOT_FOUND   The required pad file can't be found.\r
\r
**/\r
EFI_STATUS\r
FvLocatePadFile (\r
  IN  FV_DEVICE           *FvDevice,\r
  IN  UINTN               Size,\r
  IN  UINTN               RequiredAlignment,\r
  OUT UINTN               *PadSize,\r
  OUT FFS_FILE_LIST_ENTRY **PadFileEntry\r
  );\r
\r
/**\r
  Locate a suitable pad file for multiple file writing.\r
\r
  @param FvDevice          Cached Firmware Volume.\r
  @param NumOfFiles        The number of Files that needed updating\r
  @param BufferSize        The array of each file size.\r
  @param RequiredAlignment The array of of FFS File Data alignment requirement.\r
  @param PadSize           The array of size of each leading Pad File.\r
  @param TotalSizeNeeded   The totalsize that can hold these files.\r
  @param PadFileEntry      Pointer to the Pad File Entry that meets the requirement.\r
\r
  @retval EFI_SUCCESS     The required pad file is found.\r
  @retval EFI_NOT_FOUND   The required pad file can't be found.\r
\r
**/\r
EFI_STATUS\r
FvSearchSuitablePadFile (\r
  IN FV_DEVICE              *FvDevice,\r
  IN UINTN                  NumOfFiles,\r
  IN UINTN                  *BufferSize,\r
  IN UINTN                  *RequiredAlignment,\r
  OUT UINTN                 *PadSize,\r
  OUT UINTN                 *TotalSizeNeeded,\r
  OUT FFS_FILE_LIST_ENTRY   **PadFileEntry\r
  );\r
\r
/**\r
  Locate a Free Space entry which can hold these files, including\r
  meeting the alignment requirements.\r
\r
  @param FvDevice          Cached Firmware Volume.\r
  @param NumOfFiles        The number of Files that needed updating\r
  @param BufferSize        The array of each file size.\r
  @param RequiredAlignment The array of of FFS File Data alignment requirement.\r
  @param PadSize           The array of size of each leading Pad File.\r
  @param TotalSizeNeeded   The got total size that can hold these files.\r
  @param FreeSpaceEntry    The Free Space Entry that can hold these files.\r
\r
  @retval EFI_SUCCESS     The free space entry is found.\r
  @retval EFI_NOT_FOUND   The free space entry can't be found.\r
\r
**/\r
EFI_STATUS\r
FvSearchSuitableFreeSpace (\r
  IN FV_DEVICE              *FvDevice,\r
  IN UINTN                  NumOfFiles,\r
  IN UINTN                  *BufferSize,\r
  IN UINTN                  *RequiredAlignment,\r
  OUT UINTN                 *PadSize,\r
  OUT UINTN                 *TotalSizeNeeded,\r
  OUT FREE_SPACE_ENTRY      **FreeSpaceEntry\r
  );\r
\r
/**\r
  Change FFS file header state and write to FV.\r
\r
  @param  FvDevice     Cached FV image.\r
  @param  FfsHeader    Points to the FFS file header to be updated.\r
  @param  State        FFS file state to be set.\r
\r
  @retval EFI_SUCCESS  File state is writen into FV.\r
  @retval others       File state can't be writen into FV.\r
\r
**/\r
EFI_STATUS\r
UpdateHeaderBit (\r
  IN FV_DEVICE            *FvDevice,\r
  IN EFI_FFS_FILE_HEADER  *FfsHeader,\r
  IN EFI_FFS_FILE_STATE   State\r
  );\r
\r
/**\r
  Convert EFI_FV_FILE_ATTRIBUTES to FFS_FILE_ATTRIBUTES.\r
\r
  @param FvFileAttrib    The value of EFI_FV_FILE_ATTRIBUTES\r
  @param FfsFileAttrib   Pointer to the got FFS_FILE_ATTRIBUTES value.\r
\r
**/\r
VOID\r
FvFileAttrib2FfsFileAttrib (\r
  IN     EFI_FV_FILE_ATTRIBUTES  FvFileAttrib,\r
  OUT UINT8                      *FfsFileAttrib\r
  );\r
\r
#endif\r