a550d468a6
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the EmulatorPkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
279 lines
7.9 KiB
C
279 lines
7.9 KiB
C
/*++ @file
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A simple FV stack so the SEC can extract the SEC Core from an
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FV.
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Copyright (c) 2006, 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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#include <PiPei.h>
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#define GET_OCCUPIED_SIZE(ActualSize, Alignment) \
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(ActualSize) + (((Alignment) - ((ActualSize) & ((Alignment) - 1))) & ((Alignment) - 1))
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EFI_FFS_FILE_STATE
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GetFileState (
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IN UINT8 ErasePolarity,
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IN EFI_FFS_FILE_HEADER *FfsHeader
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)
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/*++
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Routine Description:
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Returns the highest bit set of the State field
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Arguments:
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ErasePolarity - Erase Polarity as defined by EFI_FVB2_ERASE_POLARITY
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in the Attributes field.
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FfsHeader - Pointer to FFS File Header.
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Returns:
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Returns the highest bit in the State field
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**/
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{
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EFI_FFS_FILE_STATE FileState;
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EFI_FFS_FILE_STATE HighestBit;
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FileState = FfsHeader->State;
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if (ErasePolarity != 0) {
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FileState = (EFI_FFS_FILE_STATE) ~FileState;
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}
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HighestBit = 0x80;
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while (HighestBit != 0 && (HighestBit & FileState) == 0) {
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HighestBit >>= 1;
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}
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return HighestBit;
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}
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UINT8
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CalculateHeaderChecksum (
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IN EFI_FFS_FILE_HEADER *FileHeader
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)
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/*++
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Routine Description:
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Calculates the checksum of the header of a file.
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Arguments:
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FileHeader - Pointer to FFS File Header.
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Returns:
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Checksum of the header.
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**/
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{
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UINT8 *ptr;
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UINTN Index;
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UINT8 Sum;
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Sum = 0;
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ptr = (UINT8 *)FileHeader;
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for (Index = 0; Index < sizeof (EFI_FFS_FILE_HEADER) - 3; Index += 4) {
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Sum = (UINT8)(Sum + ptr[Index]);
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Sum = (UINT8)(Sum + ptr[Index + 1]);
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Sum = (UINT8)(Sum + ptr[Index + 2]);
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Sum = (UINT8)(Sum + ptr[Index + 3]);
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}
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for ( ; Index < sizeof (EFI_FFS_FILE_HEADER); Index++) {
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Sum = (UINT8)(Sum + ptr[Index]);
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}
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//
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// State field (since this indicates the different state of file).
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//
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Sum = (UINT8)(Sum - FileHeader->State);
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//
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// Checksum field of the file is not part of the header checksum.
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//
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Sum = (UINT8)(Sum - FileHeader->IntegrityCheck.Checksum.File);
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return Sum;
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}
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EFI_STATUS
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SecFfsFindNextFile (
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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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Routine Description:
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Given the input file pointer, search for the next matching file in the
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FFS volume as defined by SearchType. The search starts from FileHeader inside
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the Firmware Volume defined by FwVolHeader.
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Arguments:
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SearchType - Filter to find only files of this type.
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Type EFI_FV_FILETYPE_ALL causes no filtering to be done.
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FwVolHeader - Pointer to the FV header of the volume to search.
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This parameter must point to a valid FFS volume.
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FileHeader - Pointer to the current file from which to begin searching.
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This pointer will be updated upon return to reflect the file
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found.
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Returns:
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EFI_NOT_FOUND - No files matching the search criteria were found
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EFI_SUCCESS
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**/
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{
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EFI_FFS_FILE_HEADER *FfsFileHeader;
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UINT32 FileLength;
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UINT32 FileOccupiedSize;
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UINT32 FileOffset;
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UINT64 FvLength;
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UINT8 ErasePolarity;
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UINT8 FileState;
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EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
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EFI_FFS_FILE_HEADER **FileHeader;
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//
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// Convert the handle of FV to FV header for memory-mapped firmware volume
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//
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FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *)FvHandle;
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FileHeader = (EFI_FFS_FILE_HEADER **)FileHandle;
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FvLength = FwVolHeader->FvLength;
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if (FwVolHeader->Attributes & EFI_FVB2_ERASE_POLARITY) {
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ErasePolarity = 1;
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} else {
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ErasePolarity = 0;
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}
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//
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// If FileHeader is not specified (NULL) start with the first file in the
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// firmware volume. Otherwise, start from the FileHeader.
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//
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if (*FileHeader == NULL) {
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FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FwVolHeader + FwVolHeader->HeaderLength);
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} else {
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//
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// Length is 24 bits wide so mask upper 8 bits
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// FileLength is adjusted to FileOccupiedSize as it is 8 byte aligned.
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//
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FileLength = *(UINT32 *)(*FileHeader)->Size & 0x00FFFFFF;
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FileOccupiedSize = GET_OCCUPIED_SIZE (FileLength, 8);
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FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)*FileHeader + FileOccupiedSize);
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}
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FileOffset = (UINT32)((UINT8 *)FfsFileHeader - (UINT8 *)FwVolHeader);
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while (FileOffset < (FvLength - sizeof (EFI_FFS_FILE_HEADER))) {
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//
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// Get FileState which is the highest bit of the State
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//
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FileState = GetFileState (ErasePolarity, FfsFileHeader);
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switch (FileState) {
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case EFI_FILE_HEADER_INVALID:
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FileOffset += sizeof (EFI_FFS_FILE_HEADER);
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FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FfsFileHeader + sizeof (EFI_FFS_FILE_HEADER));
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break;
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case EFI_FILE_DATA_VALID:
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case EFI_FILE_MARKED_FOR_UPDATE:
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if (CalculateHeaderChecksum (FfsFileHeader) == 0) {
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FileLength = *(UINT32 *)(FfsFileHeader->Size) & 0x00FFFFFF;
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FileOccupiedSize = GET_OCCUPIED_SIZE (FileLength, 8);
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if ((SearchType == FfsFileHeader->Type) || (SearchType == EFI_FV_FILETYPE_ALL)) {
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*FileHeader = FfsFileHeader;
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return EFI_SUCCESS;
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}
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FileOffset += FileOccupiedSize;
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FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FfsFileHeader + FileOccupiedSize);
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} else {
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return EFI_NOT_FOUND;
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}
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break;
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case EFI_FILE_DELETED:
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FileLength = *(UINT32 *)(FfsFileHeader->Size) & 0x00FFFFFF;
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FileOccupiedSize = GET_OCCUPIED_SIZE (FileLength, 8);
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FileOffset += FileOccupiedSize;
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FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FfsFileHeader + FileOccupiedSize);
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break;
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default:
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return EFI_NOT_FOUND;
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}
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}
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return EFI_NOT_FOUND;
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}
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EFI_STATUS
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SecFfsFindSectionData (
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IN EFI_SECTION_TYPE SectionType,
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IN EFI_FFS_FILE_HEADER *FfsFileHeader,
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IN OUT VOID **SectionData
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)
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/*++
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Routine Description:
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Given the input file pointer, search for the next matching section in the
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FFS volume.
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Arguments:
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SearchType - Filter to find only sections of this type.
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FfsFileHeader - Pointer to the current file to search.
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SectionData - Pointer to the Section matching SectionType in FfsFileHeader.
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NULL if section not found
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Returns:
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EFI_NOT_FOUND - No files matching the search criteria were found
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EFI_SUCCESS
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**/
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{
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UINT32 FileSize;
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EFI_COMMON_SECTION_HEADER *Section;
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UINT32 SectionLength;
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UINT32 ParsedLength;
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//
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// Size is 24 bits wide so mask upper 8 bits.
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// Does not include FfsFileHeader header size
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// FileSize is adjusted to FileOccupiedSize as it is 8 byte aligned.
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//
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Section = (EFI_COMMON_SECTION_HEADER *)(FfsFileHeader + 1);
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FileSize = *(UINT32 *)(FfsFileHeader->Size) & 0x00FFFFFF;
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FileSize -= sizeof (EFI_FFS_FILE_HEADER);
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*SectionData = NULL;
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ParsedLength = 0;
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while (ParsedLength < FileSize) {
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if (Section->Type == SectionType) {
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*SectionData = (VOID *)(Section + 1);
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return EFI_SUCCESS;
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}
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//
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// Size is 24 bits wide so mask upper 8 bits.
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// SectionLength is adjusted it is 4 byte aligned.
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// Go to the next section
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//
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SectionLength = *(UINT32 *)Section->Size & 0x00FFFFFF;
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SectionLength = GET_OCCUPIED_SIZE (SectionLength, 4);
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ParsedLength += SectionLength;
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Section = (EFI_COMMON_SECTION_HEADER *)((UINT8 *)Section + SectionLength);
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}
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return EFI_NOT_FOUND;
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}
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