/** @file
  The internal header file for firmware volume related definitions.
  
Copyright (c) 2009, 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.             

**/

#ifndef _FWVOL_H_
#define _FWVOL_H_

#include "PeiMain.h"

#define GET_OCCUPIED_SIZE(ActualSize, Alignment) \
  ((ActualSize) + (((Alignment) - ((ActualSize) & ((Alignment) - 1))) & ((Alignment) - 1)))


/**
  Process a firmware volume and create a volume handle.

  Create a volume handle from the information in the buffer. For
  memory-mapped firmware volumes, Buffer and BufferSize refer to
  the start of the firmware volume and the firmware volume size.
  For non memory-mapped firmware volumes, this points to a
  buffer which contains the necessary information for creating
  the firmware volume handle. Normally, these values are derived
  from the EFI_FIRMWARE_VOLUME_INFO_PPI.
  
  
  @param This                   Points to this instance of the
                                EFI_PEI_FIRMWARE_VOLUME_PPI.
  @param Buffer                 Points to the start of the buffer.
  @param BufferSize             Size of the buffer.
  @param FvHandle               Points to the returned firmware volume
                                handle. The firmware volume handle must
                                be unique within the system. 

  @retval EFI_SUCCESS           Firmware volume handle created.
  @retval EFI_VOLUME_CORRUPTED  Volume was corrupt.

**/
EFI_STATUS
EFIAPI
PeiFfs2FvPpiProcessVolume (
  IN  CONST  EFI_PEI_FIRMWARE_VOLUME_PPI *This,
  IN  VOID                               *Buffer,
  IN  UINTN                              BufferSize,
  OUT EFI_PEI_FV_HANDLE                  *FvHandle
  );
  
/**
  Finds the next file of the specified type.

  This service enables PEI modules to discover additional firmware files. 
  The FileHandle must be unique within the system.

  @param This           Points to this instance of the
                        EFI_PEI_FIRMWARE_VOLUME_PPI.
  @param SearchType     A filter to find only files of this type. Type
                        EFI_FV_FILETYPE_ALL causes no filtering to be
                        done.
  @param FvHandle       Handle of firmware volume in which to
                        search.
  @param FileHandle     Points to the current handle from which to
                        begin searching or NULL to start at the
                        beginning of the firmware volume. Updated
                        upon return to reflect the file found.

  @retval EFI_SUCCESS   The file was found.
  @retval EFI_NOT_FOUND The file was not found. FileHandle contains NULL.

**/  
EFI_STATUS
EFIAPI
PeiFfs2FvPpiFindFileByType (
  IN CONST  EFI_PEI_FIRMWARE_VOLUME_PPI *This,
  IN        EFI_FV_FILETYPE             SearchType,
  IN        EFI_PEI_FV_HANDLE           FvHandle,
  IN OUT    EFI_PEI_FILE_HANDLE         *FileHandle
  );

/**
  Find a file within a volume by its name. 
  
  This service searches for files with a specific name, within
  either the specified firmware volume or all firmware volumes.

  @param This                   Points to this instance of the
                                EFI_PEI_FIRMWARE_VOLUME_PPI.
  @param FileName               A pointer to the name of the file to find
                                within the firmware volume.
  @param FvHandle               Upon entry, the pointer to the firmware
                                volume to search or NULL if all firmware
                                volumes should be searched. Upon exit, the
                                actual firmware volume in which the file was
                                found.
  @param FileHandle             Upon exit, points to the found file's
                                handle or NULL if it could not be found.

  @retval EFI_SUCCESS           File was found.
  @retval EFI_NOT_FOUND         File was not found.
  @retval EFI_INVALID_PARAMETER FvHandle or FileHandle or
                                FileName was NULL.


**/    
EFI_STATUS
EFIAPI
PeiFfs2FvPpiFindFileByName (
  IN  CONST  EFI_PEI_FIRMWARE_VOLUME_PPI *This,
  IN  CONST  EFI_GUID                    *FileName,
  IN  EFI_PEI_FV_HANDLE                  *FvHandle,
  OUT EFI_PEI_FILE_HANDLE                *FileHandle  
  );

/**
  Find the next matching section in the firmware file.
  
  This service enables PEI modules to discover sections
  of a given type within a valid file.
  
  @param This             Points to this instance of the
                          EFI_PEI_FIRMWARE_VOLUME_PPI.
  @param SearchType       A filter to find only sections of this
                          type.
  @param FileHandle       Handle of firmware file in which to
                          search.
  @param SectionData      Updated upon  return to point to the
                          section found.
  
  @retval EFI_SUCCESS     Section was found.
  @retval EFI_NOT_FOUND   Section of the specified type was not
                          found. SectionData contains NULL.
**/      
EFI_STATUS
EFIAPI
PeiFfs2FvPpiFindSectionByType (
  IN  CONST EFI_PEI_FIRMWARE_VOLUME_PPI    *This,
  IN        EFI_SECTION_TYPE               SearchType,
  IN        EFI_PEI_FILE_HANDLE            FileHandle,
  OUT VOID                                 **SectionData
  );

/**
  Returns information about a specific file.

  This function returns information about a specific
  file, including its file name, type, attributes, starting
  address and size. 
   
  @param This                     Points to this instance of the
                                  EFI_PEI_FIRMWARE_VOLUME_PPI.
  @param FileHandle               Handle of the file.
  @param FileInfo                 Upon exit, points to the file's
                                  information.

  @retval EFI_SUCCESS             File information returned.
  @retval EFI_INVALID_PARAMETER   If FileHandle does not
                                  represent a valid file.
  @retval EFI_INVALID_PARAMETER   If FileInfo is NULL.
  
**/         
EFI_STATUS
EFIAPI
PeiFfs2FvPpiGetFileInfo (
  IN  CONST EFI_PEI_FIRMWARE_VOLUME_PPI   *This, 
  IN        EFI_PEI_FILE_HANDLE           FileHandle, 
  OUT       EFI_FV_FILE_INFO              *FileInfo
  );

/**
  This function returns information about the firmware volume.
  
  @param This                     Points to this instance of the
                                  EFI_PEI_FIRMWARE_VOLUME_PPI.
  @param FvHandle                 Handle to the firmware handle.
  @param VolumeInfo               Points to the returned firmware volume
                                  information.

  @retval EFI_SUCCESS             Information returned successfully.
  @retval EFI_INVALID_PARAMETER   FvHandle does not indicate a valid
                                  firmware volume or VolumeInfo is NULL.

**/            
EFI_STATUS
EFIAPI
PeiFfs2FvPpiGetVolumeInfo (
  IN  CONST  EFI_PEI_FIRMWARE_VOLUME_PPI   *This, 
  IN  EFI_PEI_FV_HANDLE                    FvHandle, 
  OUT EFI_FV_INFO                          *VolumeInfo
  );

/**
  Convert the handle of FV to pointer of corresponding PEI_CORE_FV_HANDLE.
  
  @param FvHandle   The handle of a FV.
  
  @retval NULL if can not find.
  @return Pointer of corresponding PEI_CORE_FV_HANDLE. 
**/
PEI_CORE_FV_HANDLE *
FvHandleToCoreHandle (
  IN EFI_PEI_FV_HANDLE  FvHandle
  );
  
/**
  Given the input file pointer, search for the next matching file in the
  FFS volume as defined by SearchType. The search starts from FileHeader inside
  the Firmware Volume defined by FwVolHeader.


  @param FvHandle        Pointer to the FV header of the volume to search
  @param FileName        File name
  @param SearchType      Filter to find only files of this type.
                         Type EFI_FV_FILETYPE_ALL causes no filtering to be done.
  @param FileHandle      This parameter must point to a valid FFS volume.
  @param AprioriFile     Pointer to AprioriFile image in this FV if has

  @return EFI_NOT_FOUND  No files matching the search criteria were found
  @retval EFI_SUCCESS    Success to search given file

**/
EFI_STATUS
FindFileEx (
  IN  CONST EFI_PEI_FV_HANDLE        FvHandle,
  IN  CONST EFI_GUID                 *FileName,   OPTIONAL
  IN        EFI_FV_FILETYPE          SearchType,
  IN OUT    EFI_PEI_FILE_HANDLE      *FileHandle,
  IN OUT    EFI_PEI_FV_HANDLE        *AprioriFile  OPTIONAL
  );

#endif