mirror of https://github.com/acidanthera/audk.git
222 lines
8.5 KiB
C
222 lines
8.5 KiB
C
/** @file
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This file provides functions for accessing a memory-mapped firmware volume of a specific format.
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Copyright (c) 2006 - 2007, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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@par Revision Reference:
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This PPI is defined in PI.
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Version 1.00
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**/
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#ifndef __FIRMWARE_VOLUME_PPI_H__
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#define __FIRMWARE_VOLUME_PPI_H__
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///
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/// The GUID for this PPI is the same as the firmware volume format GUID.
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/// The FV format can be EFI_FIRMWARE_FILE_SYSTEM2_GUID or the GUID for a user-defined
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/// format. The EFI_FIRMWARE_FILE_SYSTEM2_GUID is the PI Firmware Volume format.
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///
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typedef struct _EFI_PEI_FIRMWARE_VOLUME_PPI EFI_PEI_FIRMWARE_VOLUME_PPI;
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/**
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Process a firmware volume and create a volume handle.
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Create a volume handle from the information in the buffer. For
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memory-mapped firmware volumes, Buffer and BufferSize refer to
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the start of the firmware volume and the firmware volume size.
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For non memory-mapped firmware volumes, this points to a
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buffer which contains the necessary information for creating
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the firmware volume handle. Normally, these values are derived
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from the EFI_FIRMWARE_VOLUME_INFO_PPI.
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@param This Points to this instance of the
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EFI_PEI_FIRMWARE_VOLUME_PPI.
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@param Buffer Points to the start of the buffer.
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@param BufferSize Size of the buffer.
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@param FvHandle Points to the returned firmware volume
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handle. The firmware volume handle must
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be unique within the system.
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@retval EFI_SUCCESS Firmware volume handle created.
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@retval EFI_VOLUME_CORRUPTED Volume was corrupt.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_FV_PROCESS_FV)(
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IN CONST EFI_PEI_FIRMWARE_VOLUME_PPI *This,
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IN VOID *Buffer,
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IN UINTN BufferSize,
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OUT EFI_PEI_FV_HANDLE *FvHandle
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);
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/**
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Finds the next file of the specified type.
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This service enables PEI modules to discover additional firmware files.
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The FileHandle must be unique within the system.
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@param This Points to this instance of the
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EFI_PEI_FIRMWARE_VOLUME_PPI.
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@param SearchType A filter to find only files of this type. Type
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EFI_FV_FILETYPE_ALL causes no filtering to be
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done.
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@param FvHandle Handle of firmware volume in which to
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search.
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@param FileHandle Points to the current handle from which to
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begin searching or NULL to start at the
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beginning of the firmware volume. Updated
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upon return to reflect the file found.
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@retval EFI_SUCCESS The file was found.
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@retval EFI_NOT_FOUND The file was not found. FileHandle contains NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_FV_FIND_FILE_TYPE)(
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IN CONST EFI_PEI_FIRMWARE_VOLUME_PPI *This,
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IN EFI_FV_FILETYPE SearchType,
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IN EFI_PEI_FV_HANDLE FvHandle,
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IN OUT EFI_PEI_FILE_HANDLE *FileHandle
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);
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/**
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Find a file within a volume by its name.
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This service searches for files with a specific name, within
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either the specified firmware volume or all firmware volumes.
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@param This Points to this instance of the
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EFI_PEI_FIRMWARE_VOLUME_PPI.
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@param FileName A pointer to the name of the file to find
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within the firmware volume.
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@param FvHandle Upon entry, the pointer to the firmware
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volume to search or NULL if all firmware
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volumes should be searched. Upon exit, the
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actual firmware volume in which the file was
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found.
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@param FileHandle Upon exit, points to the found file's
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handle or NULL if it could not be found.
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@retval EFI_SUCCESS File was found.
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@retval EFI_NOT_FOUND File was not found.
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@retval EFI_INVALID_PARAMETER FvHandle or FileHandle or
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FileName was NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_FV_FIND_FILE_NAME)(
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IN CONST EFI_PEI_FIRMWARE_VOLUME_PPI *This,
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IN CONST EFI_GUID *FileName,
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IN EFI_PEI_FV_HANDLE FvHandle,
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OUT EFI_PEI_FILE_HANDLE *FileHandle
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);
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/**
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Returns information about a specific file.
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This function returns information about a specific
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file, including its file name, type, attributes, starting
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address and size.
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@param This Points to this instance of the
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EFI_PEI_FIRMWARE_VOLUME_PPI.
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@param FileHandle Handle of the file.
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@param FileInfo Upon exit, points to the file's
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information.
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@retval EFI_SUCCESS File information returned.
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@retval EFI_INVALID_PARAMETER If FileHandle does not
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represent a valid file.
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@retval EFI_INVALID_PARAMETER If FileInfo is NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_FV_GET_FILE_INFO)(
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IN CONST EFI_PEI_FIRMWARE_VOLUME_PPI *This,
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IN EFI_PEI_FILE_HANDLE FileHandle,
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OUT EFI_FV_FILE_INFO *FileInfo
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);
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/**
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This function returns information about the firmware volume.
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@param This Points to this instance of the
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EFI_PEI_FIRMWARE_VOLUME_PPI.
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@param FvHandle Handle to the firmware handle.
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@param VolumeInfo Points to the returned firmware volume
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information.
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@retval EFI_SUCCESS Information returned successfully.
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@retval EFI_INVALID_PARAMETER FvHandle does not indicate a valid
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firmware volume or VolumeInfo is NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_FV_GET_INFO)(
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IN CONST EFI_PEI_FIRMWARE_VOLUME_PPI *This,
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IN EFI_PEI_FV_HANDLE FvHandle,
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OUT EFI_FV_INFO *VolumeInfo
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);
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/**
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Find the next matching section in the firmware file.
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This service enables PEI modules to discover sections
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of a given type within a valid file.
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@param This Points to this instance of the
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EFI_PEI_FIRMWARE_VOLUME_PPI.
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@param SearchType A filter to find only sections of this
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type.
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@param FileHandle Handle of firmware file in which to
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search.
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@param SectionData Updated upon return to point to the
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section found.
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@retval EFI_SUCCESS Section was found.
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@retval EFI_NOT_FOUND Section of the specified type was not
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found. SectionData contains NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_FV_FIND_SECTION)(
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IN CONST EFI_PEI_FIRMWARE_VOLUME_PPI *This,
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IN EFI_SECTION_TYPE SearchType,
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IN EFI_PEI_FILE_HANDLE FileHandle,
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OUT VOID **SectionData
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);
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///
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/// This PPI provides functions for accessing a memory-mapped firmware volume of a specific format.
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///
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struct _EFI_PEI_FIRMWARE_VOLUME_PPI {
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EFI_PEI_FV_PROCESS_FV ProcessVolume;
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EFI_PEI_FV_FIND_FILE_TYPE FindFileByType;
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EFI_PEI_FV_FIND_FILE_NAME FindFileByName;
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EFI_PEI_FV_GET_FILE_INFO GetFileInfo;
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EFI_PEI_FV_GET_INFO GetVolumeInfo;
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EFI_PEI_FV_FIND_SECTION FindSectionByType;
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};
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extern EFI_GUID gEfiPeiFirmwareVolumePpiGuid;
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#endif
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