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/** @file
This file provides functions for accessing a memory-mapped firmware volume of a specific format.
Copyright (c) 2006 - 2008, 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.
@par Revision Reference:
This PPI is from PI Version 1.0 errata.
**/
#ifndef __FIRMWARE_VOLUME_PPI_H__
#define __FIRMWARE_VOLUME_PPI_H__
///
/// The GUID for this PPI is the same as the firmware volume format GUID.
/// The FV format can be EFI_FIRMWARE_FILE_SYSTEM2_GUID or the GUID for a user-defined
/// format. The EFI_FIRMWARE_FILE_SYSTEM2_GUID is the PI Firmware Volume format.
///
typedef struct _EFI_PEI_FIRMWARE_VOLUME_PPI EFI_PEI_FIRMWARE_VOLUME_PPI;
/**
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.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_FV_PROCESS_FV)(
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.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_FV_FIND_FILE_TYPE)(
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.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_FV_FIND_FILE_NAME)(
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
);
/**
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.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_FV_GET_FILE_INFO)(
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.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_FV_GET_INFO)(
IN CONST EFI_PEI_FIRMWARE_VOLUME_PPI *This,
IN EFI_PEI_FV_HANDLE FvHandle,
OUT EFI_FV_INFO *VolumeInfo
);
/**
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.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_FV_FIND_SECTION)(
IN CONST EFI_PEI_FIRMWARE_VOLUME_PPI *This,
IN EFI_SECTION_TYPE SearchType,
IN EFI_PEI_FILE_HANDLE FileHandle,
OUT VOID **SectionData
);
///
/// This PPI provides functions for accessing a memory-mapped firmware volume of a specific format.
///
struct _EFI_PEI_FIRMWARE_VOLUME_PPI {
EFI_PEI_FV_PROCESS_FV ProcessVolume;
EFI_PEI_FV_FIND_FILE_TYPE FindFileByType;
EFI_PEI_FV_FIND_FILE_NAME FindFileByName;
EFI_PEI_FV_GET_FILE_INFO GetFileInfo;
EFI_PEI_FV_GET_INFO GetVolumeInfo;
EFI_PEI_FV_FIND_SECTION FindSectionByType;
};
extern EFI_GUID gEfiPeiFirmwareVolumePpiGuid;
#endif
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