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https://github.com/CloverHackyColor/CloverBootloader.git
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190 lines
3.3 KiB
C
190 lines
3.3 KiB
C
/** @file
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These functions assist in parsing and manipulating a Firmware Volume.
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Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _EFI_FV_LIB_H
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#define _EFI_FV_LIB_H
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//
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// Include files
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//
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#include <string.h>
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#include <Common/UefiBaseTypes.h>
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#include <Common/PiFirmwareFile.h>
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#include <Common/PiFirmwareVolume.h>
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EFI_STATUS
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InitializeFvLib (
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IN VOID *Fv,
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IN UINT32 FvLength
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)
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;
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EFI_STATUS
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GetFvHeader (
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OUT EFI_FIRMWARE_VOLUME_HEADER **FvHeader,
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OUT UINT32 *FvLength
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)
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;
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EFI_STATUS
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GetNextFile (
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IN EFI_FFS_FILE_HEADER *CurrentFile,
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OUT EFI_FFS_FILE_HEADER **NextFile
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)
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;
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EFI_STATUS
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GetFileByName (
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IN EFI_GUID *FileName,
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OUT EFI_FFS_FILE_HEADER **File
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)
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;
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EFI_STATUS
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GetFileByType (
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IN EFI_FV_FILETYPE FileType,
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IN UINTN Instance,
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OUT EFI_FFS_FILE_HEADER **File
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)
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;
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EFI_STATUS
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GetSectionByType (
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IN EFI_FFS_FILE_HEADER *File,
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IN EFI_SECTION_TYPE SectionType,
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IN UINTN Instance,
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OUT EFI_FILE_SECTION_POINTER *Section
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)
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;
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//
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// will not parse compressed sections
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//
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EFI_STATUS
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VerifyFv (
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IN EFI_FIRMWARE_VOLUME_HEADER *FvHeader
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)
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;
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EFI_STATUS
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VerifyFfsFile (
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IN EFI_FFS_FILE_HEADER *FfsHeader
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)
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;
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UINT32
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GetFfsFileLength (
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EFI_FFS_FILE_HEADER *FfsHeader
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)
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;
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UINT32
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GetSectionFileLength (
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EFI_COMMON_SECTION_HEADER *SectionHeader
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)
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;
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UINT32
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GetFfsHeaderLength(
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IN EFI_FFS_FILE_HEADER *FfsHeader
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)
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;
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UINT32
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GetSectionHeaderLength(
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IN EFI_COMMON_SECTION_HEADER *SectionHeader
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)
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;
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/*++
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Routine Description:
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Verify the current pointer points to a FFS file header.
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Arguments:
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FfsHeader Pointer to an alleged FFS file.
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Returns:
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EFI_SUCCESS The Ffs header is valid.
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EFI_NOT_FOUND This "file" is the beginning of free space.
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EFI_VOLUME_CORRUPTED The Ffs header is not valid.
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--*/
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UINT32
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GetLength (
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UINT8 *ThreeByteLength
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)
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;
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/*++
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Routine Description:
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Converts a three byte length value into a UINT32.
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Arguments:
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ThreeByteLength Pointer to the first of the 3 byte length.
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Returns:
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UINT32 Size of the section
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--*/
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EFI_STATUS
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GetErasePolarity (
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OUT BOOLEAN *ErasePolarity
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)
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;
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/*++
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Routine Description:
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This function returns with the FV erase polarity. If the erase polarity
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for a bit is 1, the function return TRUE.
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Arguments:
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ErasePolarity A pointer to the erase polarity.
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Returns:
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EFI_SUCCESS The function completed successfully.
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EFI_INVALID_PARAMETER One of the input parameters was invalid.
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--*/
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UINT8
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GetFileState (
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IN BOOLEAN ErasePolarity,
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IN EFI_FFS_FILE_HEADER *FfsHeader
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)
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;
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/*++
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Routine Description:
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This function returns a the highest state bit in the FFS that is set.
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It in no way validate the FFS file.
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Arguments:
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ErasePolarity The erase polarity for the file state bits.
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FfsHeader Pointer to a FFS file.
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Returns:
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UINT8 The hightest set state of the file.
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--*/
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#endif
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