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c1fd2767c118a9f9a95f60920a027e2c7450b5b8
system76-edk2/MdeModulePkg/Core/Pei/FwVol/FwVol.c
lgao4 89cd8129f7 Update PeiCore and DxeCore to verify FFS data checksum. 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11332 6f19259b-4bc3-4df7-8a09-765794883524
2011-02-23 03:09:55 +00:00

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56 KiB
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/** @file
Pei Core Firmware File System service routines.
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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.
**/
#include "FwVol.h"
EFI_PEI_NOTIFY_DESCRIPTOR mNotifyOnFvInfoList = {
(EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gEfiPeiFirmwareVolumeInfoPpiGuid,
FirmwareVolmeInfoPpiNotifyCallback
};
EFI_PEI_FIRMWARE_VOLUME_PPI mPeiFfs2FvPpi = {
PeiFfs2FvPpiProcessVolume,
PeiFfs2FvPpiFindFileByType,
PeiFfs2FvPpiFindFileByName,
PeiFfs2FvPpiGetFileInfo,
PeiFfs2FvPpiGetVolumeInfo,
PeiFfs2FvPpiFindSectionByType
};
EFI_PEI_PPI_DESCRIPTOR mPeiFfs2FvPpiList = {
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gEfiFirmwareFileSystem2Guid,
&mPeiFfs2FvPpi
};
/**
Returns the file state set by the highest zero bit in the State field
@param ErasePolarity Erase Polarity as defined by EFI_FVB2_ERASE_POLARITY
in the Attributes field.
@param FfsHeader Pointer to FFS File Header.
@retval EFI_FFS_FILE_STATE File state is set by the highest none zero bit
in the header State field.
**/
EFI_FFS_FILE_STATE
GetFileState(
IN UINT8 ErasePolarity,
IN EFI_FFS_FILE_HEADER *FfsHeader
)
{
EFI_FFS_FILE_STATE FileState;
EFI_FFS_FILE_STATE HighestBit;
FileState = FfsHeader->State;
if (ErasePolarity != 0) {
FileState = (EFI_FFS_FILE_STATE)~FileState;
}
//
// Get file state set by its highest none zero bit.
//
HighestBit = 0x80;
while (HighestBit != 0 && (HighestBit & FileState) == 0) {
HighestBit >>= 1;
}
return HighestBit;
}
/**
Calculates the checksum of the header of a file.
@param FileHeader Pointer to FFS File Header.
@return Checksum of the header.
Zero means the header is good.
Non-zero means the header is bad.
**/
UINT8
CalculateHeaderChecksum (
IN EFI_FFS_FILE_HEADER *FileHeader
)
{
EFI_FFS_FILE_HEADER TestFileHeader;
CopyMem (&TestFileHeader, FileHeader, sizeof (EFI_FFS_FILE_HEADER));
//
// Ingore State and File field in FFS header.
//
TestFileHeader.State = 0;
TestFileHeader.IntegrityCheck.Checksum.File = 0;
return CalculateSum8 ((CONST UINT8 *) &TestFileHeader, sizeof (EFI_FFS_FILE_HEADER));
}
/**
Find FV handler according to FileHandle in that FV.
@param FileHandle Handle of file image
@return Pointer to instance of PEI_CORE_FV_HANDLE.
**/
PEI_CORE_FV_HANDLE*
FileHandleToVolume (
IN EFI_PEI_FILE_HANDLE FileHandle
)
{
UINTN Index;
PEI_CORE_INSTANCE *PrivateData;
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (GetPeiServicesTablePointer ());
for (Index = 0; Index < PrivateData->FvCount; Index++) {
FwVolHeader = PrivateData->Fv[Index].FvHeader;
if (((UINT64) (UINTN) FileHandle > (UINT64) (UINTN) FwVolHeader ) && \
((UINT64) (UINTN) FileHandle <= ((UINT64) (UINTN) FwVolHeader + FwVolHeader->FvLength - 1))) {
return &PrivateData->Fv[Index];
}
}
return NULL;
}
/**
Given the input file pointer, search for the first matching file in the
FFS volume as defined by SearchType. The search starts from FileHeader inside
the Firmware Volume defined by FwVolHeader.
If SearchType is EFI_FV_FILETYPE_ALL, the first FFS file will return without check its file type.
If SearchType is PEI_CORE_INTERNAL_FFS_FILE_DISPATCH_TYPE,
the first PEIM, or COMBINED PEIM or FV file type FFS file will return.
@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
)
{
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
EFI_FFS_FILE_HEADER **FileHeader;
EFI_FFS_FILE_HEADER *FfsFileHeader;
UINT32 FileLength;
UINT32 FileOccupiedSize;
UINT32 FileOffset;
UINT64 FvLength;
UINT8 ErasePolarity;
UINT8 FileState;
UINT8 DataCheckSum;
//
// Convert the handle of FV to FV header for memory-mapped firmware volume
//
FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) FvHandle;
FileHeader = (EFI_FFS_FILE_HEADER **)FileHandle;
FvLength = FwVolHeader->FvLength;
if ((FwVolHeader->Attributes & EFI_FVB2_ERASE_POLARITY) != 0) {
ErasePolarity = 1;
} else {
ErasePolarity = 0;
}
//
// If FileHeader is not specified (NULL) or FileName is not NULL,
// start with the first file in the firmware volume. Otherwise,
// start from the FileHeader.
//
if ((*FileHeader == NULL) || (FileName != NULL)) {
FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FwVolHeader + FwVolHeader->HeaderLength);
} else {
//
// Length is 24 bits wide so mask upper 8 bits
// FileLength is adjusted to FileOccupiedSize as it is 8 byte aligned.
//
FileLength = *(UINT32 *)(*FileHeader)->Size & 0x00FFFFFF;
FileOccupiedSize = GET_OCCUPIED_SIZE (FileLength, 8);
FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)*FileHeader + FileOccupiedSize);
}
FileOffset = (UINT32) ((UINT8 *)FfsFileHeader - (UINT8 *)FwVolHeader);
ASSERT (FileOffset <= 0xFFFFFFFF);
while (FileOffset < (FvLength - sizeof (EFI_FFS_FILE_HEADER))) {
//
// Get FileState which is the highest bit of the State
//
FileState = GetFileState (ErasePolarity, FfsFileHeader);
switch (FileState) {
case EFI_FILE_HEADER_INVALID:
FileOffset += sizeof(EFI_FFS_FILE_HEADER);
FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FfsFileHeader + sizeof(EFI_FFS_FILE_HEADER));
break;
case EFI_FILE_DATA_VALID:
case EFI_FILE_MARKED_FOR_UPDATE:
if (CalculateHeaderChecksum (FfsFileHeader) != 0) {
ASSERT (FALSE);
*FileHeader = NULL;
return EFI_NOT_FOUND;
}
FileLength = *(UINT32 *)(FfsFileHeader->Size) & 0x00FFFFFF;
FileOccupiedSize = GET_OCCUPIED_SIZE(FileLength, 8);
DataCheckSum = FFS_FIXED_CHECKSUM;
if ((FfsFileHeader->Attributes & FFS_ATTRIB_CHECKSUM) == FFS_ATTRIB_CHECKSUM) {
DataCheckSum = CalculateCheckSum8 ((CONST UINT8 *)FfsFileHeader + sizeof(EFI_FFS_FILE_HEADER), FileLength - sizeof(EFI_FFS_FILE_HEADER));
}
if (FfsFileHeader->IntegrityCheck.Checksum.File != DataCheckSum) {
ASSERT (FALSE);
*FileHeader = NULL;
return EFI_NOT_FOUND;
}
if (FileName != NULL) {
if (CompareGuid (&FfsFileHeader->Name, (EFI_GUID*)FileName)) {
*FileHeader = FfsFileHeader;
return EFI_SUCCESS;
}
} else if (SearchType == PEI_CORE_INTERNAL_FFS_FILE_DISPATCH_TYPE) {
if ((FfsFileHeader->Type == EFI_FV_FILETYPE_PEIM) ||
(FfsFileHeader->Type == EFI_FV_FILETYPE_COMBINED_PEIM_DRIVER) ||
(FfsFileHeader->Type == EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE)) {
*FileHeader = FfsFileHeader;
return EFI_SUCCESS;
} else if (AprioriFile != NULL) {
if (FfsFileHeader->Type == EFI_FV_FILETYPE_FREEFORM) {
if (CompareGuid (&FfsFileHeader->Name, &gPeiAprioriFileNameGuid)) {
*AprioriFile = FfsFileHeader;
}
}
}
} else if (((SearchType == FfsFileHeader->Type) || (SearchType == EFI_FV_FILETYPE_ALL)) &&
(FfsFileHeader->Type != EFI_FV_FILETYPE_FFS_PAD)) {
*FileHeader = FfsFileHeader;
return EFI_SUCCESS;
}
FileOffset += FileOccupiedSize;
FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FfsFileHeader + FileOccupiedSize);
break;
case EFI_FILE_DELETED:
FileLength = *(UINT32 *)(FfsFileHeader->Size) & 0x00FFFFFF;
FileOccupiedSize = GET_OCCUPIED_SIZE(FileLength, 8);
FileOffset += FileOccupiedSize;
FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FfsFileHeader + FileOccupiedSize);
break;
default:
*FileHeader = NULL;
return EFI_NOT_FOUND;
}
}
*FileHeader = NULL;
return EFI_NOT_FOUND;
}
/**
Initialize PeiCore Fv List.
@param PrivateData - Pointer to PEI_CORE_INSTANCE.
@param SecCoreData - Pointer to EFI_SEC_PEI_HAND_OFF.
**/
VOID
PeiInitializeFv (
IN PEI_CORE_INSTANCE *PrivateData,
IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData
)
{
EFI_STATUS Status;
EFI_PEI_FIRMWARE_VOLUME_PPI *FvPpi;
EFI_PEI_FV_HANDLE FvHandle;
EFI_FIRMWARE_VOLUME_HEADER *BfvHeader;
//
// Install FV_PPI for FFS2 file system.
//
PeiServicesInstallPpi (&mPeiFfs2FvPpiList);
BfvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)SecCoreData->BootFirmwareVolumeBase;
//
// The FV_PPI in BFV's format should be installed.
//
Status = PeiServicesLocatePpi (
&BfvHeader->FileSystemGuid,
0,
NULL,
(VOID**)&FvPpi
);
ASSERT_EFI_ERROR (Status);
//
// Get handle of BFV
//
FvPpi->ProcessVolume (
FvPpi,
SecCoreData->BootFirmwareVolumeBase,
(UINTN)BfvHeader->FvLength,
&FvHandle
);
//
// Update internal PEI_CORE_FV array.
//
PrivateData->Fv[PrivateData->FvCount].FvHeader = BfvHeader;
PrivateData->Fv[PrivateData->FvCount].FvPpi = FvPpi;
PrivateData->Fv[PrivateData->FvCount].FvHandle = FvHandle;
DEBUG ((
EFI_D_INFO,
"The %dth FV start address is 0x%11p, size is 0x%08x, handle is 0x%p\n",
(UINT32) PrivateData->FvCount,
(VOID *) BfvHeader,
BfvHeader->FvLength,
FvHandle
));
PrivateData->FvCount ++;
//
// Post a call-back for the FvInfoPPI services to expose
// additional Fvs to PeiCore.
//
Status = PeiServicesNotifyPpi (&mNotifyOnFvInfoList);
ASSERT_EFI_ERROR (Status);
}
/**
Process Firmware Volum Information once FvInfoPPI install.
The FV Info will be registered into PeiCore private data structure.
And search the inside FV image, if found, the new FV INFO PPI will be installed.
@param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
@param NotifyDescriptor Address of the notification descriptor data structure.
@param Ppi Address of the PPI that was installed.
@retval EFI_SUCCESS The FV Info is registered into PeiCore private data structure.
@return if not EFI_SUCESS, fail to verify FV.
**/
EFI_STATUS
EFIAPI
FirmwareVolmeInfoPpiNotifyCallback (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
IN VOID *Ppi
)
{
EFI_PEI_FIRMWARE_VOLUME_INFO_PPI *FvInfoPpi;
EFI_PEI_FIRMWARE_VOLUME_PPI *FvPpi;
PEI_CORE_INSTANCE *PrivateData;
EFI_STATUS Status;
EFI_PEI_FV_HANDLE FvHandle;
UINTN FvIndex;
EFI_PEI_FILE_HANDLE FileHandle;
VOID *DepexData;
Status = EFI_SUCCESS;
PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);
if (PrivateData->FvCount >= FixedPcdGet32 (PcdPeiCoreMaxFvSupported)) {
DEBUG ((EFI_D_ERROR, "The number of Fv Images (%d) exceed the max supported FVs (%d) in Pei", PrivateData->FvCount + 1, FixedPcdGet32 (PcdPeiCoreMaxFvSupported)));
DEBUG ((EFI_D_ERROR, "PcdPeiCoreMaxFvSupported value need be reconfigurated in DSC"));
ASSERT (FALSE);
}
FvInfoPpi = (EFI_PEI_FIRMWARE_VOLUME_INFO_PPI *)Ppi;
//
// Locate the corresponding FV_PPI according to founded FV's format guid
//
Status = PeiServicesLocatePpi (
&FvInfoPpi->FvFormat,
0,
NULL,
(VOID**)&FvPpi
);
if (!EFI_ERROR (Status)) {
//
// Process new found FV and get FV handle.
//
Status = FvPpi->ProcessVolume (FvPpi, FvInfoPpi->FvInfo, FvInfoPpi->FvInfoSize, &FvHandle);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Fail to process new found FV, FV may be corrupted!\n"));
return Status;
}
//
// Check whether the FV has already been processed.
//
for (FvIndex = 0; FvIndex < PrivateData->FvCount; FvIndex ++) {
if (PrivateData->Fv[FvIndex].FvHandle == FvHandle) {
DEBUG ((EFI_D_INFO, "The Fv %p has already been processed!\n", FvInfoPpi->FvInfo));
return EFI_SUCCESS;
}
}
//
// Update internal PEI_CORE_FV array.
//
PrivateData->Fv[PrivateData->FvCount].FvHeader = (EFI_FIRMWARE_VOLUME_HEADER*) FvInfoPpi->FvInfo;
PrivateData->Fv[PrivateData->FvCount].FvPpi = FvPpi;
PrivateData->Fv[PrivateData->FvCount].FvHandle = FvHandle;
DEBUG ((
EFI_D_INFO,
"The %dth FV start address is 0x%11p, size is 0x%08x, handle is 0x%p\n",
(UINT32) PrivateData->FvCount,
(VOID *) FvInfoPpi->FvInfo,
FvInfoPpi->FvInfoSize,
FvHandle
));
PrivateData->FvCount ++;
//
// Scan and process the new discoveried FV for EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE
//
FileHandle = NULL;
do {
Status = FvPpi->FindFileByType (
FvPpi,
EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE,
FvHandle,
&FileHandle
);
if (!EFI_ERROR (Status)) {
Status = FvPpi->FindSectionByType (
FvPpi,
EFI_SECTION_PEI_DEPEX,
FileHandle,
(VOID**)&DepexData
);
if (!EFI_ERROR (Status)) {
if (!PeimDispatchReadiness (PeiServices, DepexData)) {
//
// Dependency is not satisfied.
//
continue;
}
}
DEBUG ((EFI_D_INFO, "Found firmware volume Image File %p in FV[%d] %p\n", FileHandle, PrivateData->FvCount - 1, FvHandle));
ProcessFvFile (&PrivateData->Fv[PrivateData->FvCount - 1], FileHandle);
}
} while (FileHandle != NULL);
} else {
DEBUG ((EFI_D_ERROR, "Fail to process FV %p because no corresponding EFI_FIRMWARE_VOLUME_PPI is found!\n", FvInfoPpi->FvInfo));
AddUnknownFormatFvInfo (PrivateData, &FvInfoPpi->FvFormat, FvInfoPpi->FvInfo, FvInfoPpi->FvInfoSize);
}
return EFI_SUCCESS;
}
/**
Go through the file to search SectionType section.
Search within encapsulation sections (compression and GUIDed) recursively,
until the match section is found.
@param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.
@param SectionType Filter to find only section of this type.
@param Section From where to search.
@param SectionSize The file size to search.
@param OutputBuffer A pointer to the discovered section, if successful.
NULL if section not found
@return EFI_NOT_FOUND The match section is not found.
@return EFI_SUCCESS The match section is found.
**/
EFI_STATUS
ProcessSection (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_SECTION_TYPE SectionType,
IN EFI_COMMON_SECTION_HEADER *Section,
IN UINTN SectionSize,
OUT VOID **OutputBuffer
)
{
EFI_STATUS Status;
UINT32 SectionLength;
UINT32 ParsedLength;
EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI *GuidSectionPpi;
EFI_PEI_DECOMPRESS_PPI *DecompressPpi;
VOID *PpiOutput;
UINTN PpiOutputSize;
UINTN Index;
UINT32 Authentication;
PEI_CORE_INSTANCE *PrivateData;
PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);
*OutputBuffer = NULL;
ParsedLength = 0;
Index = 0;
Status = EFI_NOT_FOUND;
PpiOutput = NULL;
PpiOutputSize = 0;
while (ParsedLength < SectionSize) {
if (Section->Type == SectionType) {
*OutputBuffer = (VOID *)(Section + 1);
return EFI_SUCCESS;
} else if ((Section->Type == EFI_SECTION_GUID_DEFINED) || (Section->Type == EFI_SECTION_COMPRESSION)) {
//
// Check the encapsulated section is extracted into the cache data.
//
for (Index = 0; Index < PrivateData->CacheSection.AllSectionCount; Index ++) {
if (Section == PrivateData->CacheSection.Section[Index]) {
PpiOutput = PrivateData->CacheSection.SectionData[Index];
PpiOutputSize = PrivateData->CacheSection.SectionSize[Index];
//
// Search section directly from the cache data.
//
return ProcessSection (
PeiServices,
SectionType,
PpiOutput,
PpiOutputSize,
OutputBuffer
);
}
}
Status = EFI_NOT_FOUND;
if (Section->Type == EFI_SECTION_GUID_DEFINED) {
Status = PeiServicesLocatePpi (
&((EFI_GUID_DEFINED_SECTION *)Section)->SectionDefinitionGuid,
0,
NULL,
(VOID **) &GuidSectionPpi
);
if (!EFI_ERROR (Status)) {
Status = GuidSectionPpi->ExtractSection (
GuidSectionPpi,
Section,
&PpiOutput,
&PpiOutputSize,
&Authentication
);
}
} else if (Section->Type == EFI_SECTION_COMPRESSION) {
Status = PeiServicesLocatePpi (&gEfiPeiDecompressPpiGuid, 0, NULL, (VOID **) &DecompressPpi);
if (!EFI_ERROR (Status)) {
Status = DecompressPpi->Decompress (
DecompressPpi,
(CONST EFI_COMPRESSION_SECTION*) Section,
&PpiOutput,
&PpiOutputSize
);
}
}
if (!EFI_ERROR (Status)) {
//
// Update cache section data.
//
if (PrivateData->CacheSection.AllSectionCount < CACHE_SETION_MAX_NUMBER) {
PrivateData->CacheSection.AllSectionCount ++;
}
PrivateData->CacheSection.Section [PrivateData->CacheSection.SectionIndex] = Section;
PrivateData->CacheSection.SectionData [PrivateData->CacheSection.SectionIndex] = PpiOutput;
PrivateData->CacheSection.SectionSize [PrivateData->CacheSection.SectionIndex] = PpiOutputSize;
PrivateData->CacheSection.SectionIndex = (PrivateData->CacheSection.SectionIndex + 1)%CACHE_SETION_MAX_NUMBER;
return ProcessSection (
PeiServices,
SectionType,
PpiOutput,
PpiOutputSize,
OutputBuffer
);
}
}
//
// Size is 24 bits wide so mask upper 8 bits.
// SectionLength is adjusted it is 4 byte aligned.
// Go to the next section
//
SectionLength = *(UINT32 *)Section->Size & 0x00FFFFFF;
SectionLength = GET_OCCUPIED_SIZE (SectionLength, 4);
ASSERT (SectionLength != 0);
ParsedLength += SectionLength;
Section = (EFI_COMMON_SECTION_HEADER *)((UINT8 *)Section + SectionLength);
}
return EFI_NOT_FOUND;
}
/**
Searches for the next matching section within the specified file.
@param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
@param SectionType Filter to find only sections of this type.
@param FileHandle Pointer to the current file to search.
@param SectionData A pointer to the discovered section, if successful.
NULL if section not found
@retval EFI_NOT_FOUND The section was not found.
@retval EFI_SUCCESS The section was found.
**/
EFI_STATUS
EFIAPI
PeiFfsFindSectionData (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_SECTION_TYPE SectionType,
IN EFI_PEI_FILE_HANDLE FileHandle,
OUT VOID **SectionData
)
{
PEI_CORE_FV_HANDLE *CoreFvHandle;
CoreFvHandle = FileHandleToVolume (FileHandle);
if ((CoreFvHandle == NULL) || (CoreFvHandle->FvPpi == NULL)) {
return EFI_NOT_FOUND;
}
return CoreFvHandle->FvPpi->FindSectionByType (CoreFvHandle->FvPpi, SectionType, FileHandle, SectionData);
}
/**
Searches for the next matching file in the firmware volume.
@param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.
@param SearchType 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 On entry, points to the current handle from which to begin searching or NULL to start
at the beginning of the firmware volume. On exit, points the file handle of the next file
in the volume or NULL if there are no more files.
@retval EFI_NOT_FOUND The file was not found.
@retval EFI_NOT_FOUND The header checksum was not zero.
@retval EFI_SUCCESS The file was found.
**/
EFI_STATUS
EFIAPI
PeiFfsFindNextFile (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN UINT8 SearchType,
IN EFI_PEI_FV_HANDLE FvHandle,
IN OUT EFI_PEI_FILE_HANDLE *FileHandle
)
{
PEI_CORE_FV_HANDLE *CoreFvHandle;
CoreFvHandle = FvHandleToCoreHandle (FvHandle);
//
// To make backward compatiblity, if can not find corresponding the handle of FV
// then treat FV as build-in FFS2 format and memory mapped FV that FV handle is pointed
// to the address of first byte of FV.
//
if ((CoreFvHandle == NULL) && FeaturePcdGet (PcdFrameworkCompatibilitySupport)) {
return FindFileEx (FvHandle, NULL, SearchType, FileHandle, NULL);
}
if ((CoreFvHandle == NULL) || CoreFvHandle->FvPpi == NULL) {
return EFI_NOT_FOUND;
}
return CoreFvHandle->FvPpi->FindFileByType (CoreFvHandle->FvPpi, SearchType, FvHandle, FileHandle);
}
/**
Search the firmware volumes by index
@param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
@param Instance This instance of the firmware volume to find. The value 0 is the Boot Firmware
Volume (BFV).
@param VolumeHandle On exit, points to the next volume handle or NULL if it does not exist.
@retval EFI_INVALID_PARAMETER VolumeHandle is NULL
@retval EFI_NOT_FOUND The volume was not found.
@retval EFI_SUCCESS The volume was found.
**/
EFI_STATUS
EFIAPI
PeiFfsFindNextVolume (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN UINTN Instance,
IN OUT EFI_PEI_FV_HANDLE *VolumeHandle
)
{
PEI_CORE_INSTANCE *Private;
PEI_CORE_FV_HANDLE *CoreFvHandle;
if (VolumeHandle == NULL) {
return EFI_INVALID_PARAMETER;
}
Private = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);
CoreFvHandle = FindNextCoreFvHandle (Private, Instance);
if (CoreFvHandle == NULL) {
*VolumeHandle = NULL;
return EFI_NOT_FOUND;
}
*VolumeHandle = CoreFvHandle->FvHandle;
return EFI_SUCCESS;
}
/**
Find a file within a volume by its name.
@param FileName A pointer to the name of the file to find within the firmware volume.
@param VolumeHandle The firmware volume to search
@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 VolumeHandle or FileHandle or FileName was NULL.
**/
EFI_STATUS
EFIAPI
PeiFfsFindFileByName (
IN CONST EFI_GUID *FileName,
IN EFI_PEI_FV_HANDLE VolumeHandle,
OUT EFI_PEI_FILE_HANDLE *FileHandle
)
{
PEI_CORE_FV_HANDLE *CoreFvHandle;
if ((VolumeHandle == NULL) || (FileName == NULL) || (FileHandle == NULL)) {
return EFI_INVALID_PARAMETER;
}
CoreFvHandle = FvHandleToCoreHandle (VolumeHandle);
if ((CoreFvHandle == NULL) || (CoreFvHandle->FvPpi == NULL)) {
return EFI_NOT_FOUND;
}
return CoreFvHandle->FvPpi->FindFileByName (CoreFvHandle->FvPpi, FileName, &VolumeHandle, FileHandle);
}
/**
Returns information about a specific file.
@param FileHandle Handle of the file.
@param FileInfo Upon exit, points to the file's information.
@retval EFI_INVALID_PARAMETER If FileInfo is NULL.
@retval EFI_INVALID_PARAMETER If FileHandle does not represent a valid file.
@retval EFI_SUCCESS File information returned.
**/
EFI_STATUS
EFIAPI
PeiFfsGetFileInfo (
IN EFI_PEI_FILE_HANDLE FileHandle,
OUT EFI_FV_FILE_INFO *FileInfo
)
{
PEI_CORE_FV_HANDLE *CoreFvHandle;
if ((FileHandle == NULL) || (FileInfo == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// Retrieve the FirmwareVolume which the file resides in.
//
CoreFvHandle = FileHandleToVolume (FileHandle);
if ((CoreFvHandle == NULL) || (CoreFvHandle->FvPpi == NULL)) {
return EFI_INVALID_PARAMETER;
}
return CoreFvHandle->FvPpi->GetFileInfo (CoreFvHandle->FvPpi, FileHandle, FileInfo);
}
/**
Returns information about the specified volume.
This function returns information about a specific firmware
volume, including its name, type, attributes, starting address
and size.
@param VolumeHandle Handle of the volume.
@param VolumeInfo Upon exit, points to the volume's information.
@retval EFI_SUCCESS Volume information returned.
@retval EFI_INVALID_PARAMETER If VolumeHandle does not represent a valid volume.
@retval EFI_INVALID_PARAMETER If VolumeHandle is NULL.
@retval EFI_SUCCESS Information successfully returned.
@retval EFI_INVALID_PARAMETER The volume designated by the VolumeHandle is not available.
**/
EFI_STATUS
EFIAPI
PeiFfsGetVolumeInfo (
IN EFI_PEI_FV_HANDLE VolumeHandle,
OUT EFI_FV_INFO *VolumeInfo
)
{
PEI_CORE_FV_HANDLE *CoreHandle;
if ((VolumeInfo == NULL) || (VolumeHandle == NULL)) {
return EFI_INVALID_PARAMETER;
}
CoreHandle = FvHandleToCoreHandle (VolumeHandle);
if ((CoreHandle == NULL) || (CoreHandle->FvPpi == NULL)) {
return EFI_INVALID_PARAMETER;
}
return CoreHandle->FvPpi->GetVolumeInfo (CoreHandle->FvPpi, VolumeHandle, VolumeInfo);
}
/**
Get Fv image from the FV type file, then install FV INFO ppi, Build FV hob.
@param ParentFvCoreHandle Pointer of EFI_CORE_FV_HANDLE to parent Fv image that contain this Fv image.
@param ParentFvFileHandle File handle of a Fv type file that contain this Fv image.
@retval EFI_NOT_FOUND FV image can't be found.
@retval EFI_SUCCESS Successfully to process it.
@retval EFI_OUT_OF_RESOURCES Can not allocate page when aligning FV image
@retval Others Can not find EFI_SECTION_FIRMWARE_VOLUME_IMAGE section
**/
EFI_STATUS
ProcessFvFile (
IN PEI_CORE_FV_HANDLE *ParentFvCoreHandle,
IN EFI_PEI_FILE_HANDLE ParentFvFileHandle
)
{
EFI_STATUS Status;
EFI_FV_INFO ParentFvImageInfo;
UINT32 FvAlignment;
VOID *NewFvBuffer;
EFI_PEI_HOB_POINTERS HobPtr;
EFI_PEI_FIRMWARE_VOLUME_PPI *ParentFvPpi;
EFI_PEI_FV_HANDLE ParentFvHandle;
EFI_FIRMWARE_VOLUME_HEADER *FvHeader;
EFI_FV_FILE_INFO FileInfo;
UINT64 FvLength;
//
// Check if this EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE file has already
// been extracted.
//
HobPtr.Raw = GetHobList ();
while ((HobPtr.Raw = GetNextHob (EFI_HOB_TYPE_FV2, HobPtr.Raw)) != NULL) {
if (CompareGuid (&(((EFI_FFS_FILE_HEADER *)ParentFvFileHandle)->Name), &HobPtr.FirmwareVolume2->FileName)) {
//
// this FILE has been dispatched, it will not be dispatched again.
//
DEBUG ((EFI_D_INFO, "FV file %p has been dispatched!\r\n", ParentFvFileHandle));
return EFI_SUCCESS;
}
HobPtr.Raw = GET_NEXT_HOB (HobPtr);
}
ParentFvHandle = ParentFvCoreHandle->FvHandle;
ParentFvPpi = ParentFvCoreHandle->FvPpi;
//
// Find FvImage in FvFile
//
Status = ParentFvPpi->FindSectionByType (
ParentFvPpi,
EFI_SECTION_FIRMWARE_VOLUME_IMAGE,
ParentFvFileHandle,
(VOID **)&FvHeader
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// FvAlignment must be more than 8 bytes required by FvHeader structure.
//
FvAlignment = 1 << ((ReadUnaligned32 (&FvHeader->Attributes) & EFI_FVB2_ALIGNMENT) >> 16);
if (FvAlignment < 8) {
FvAlignment = 8;
}
//
// Check FvImage
//
if ((UINTN) FvHeader % FvAlignment != 0) {
FvLength = ReadUnaligned64 (&FvHeader->FvLength);
NewFvBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES ((UINT32) FvLength), FvAlignment);
if (NewFvBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
CopyMem (NewFvBuffer, FvHeader, (UINTN) FvLength);
FvHeader = (EFI_FIRMWARE_VOLUME_HEADER*) NewFvBuffer;
}
Status = ParentFvPpi->GetVolumeInfo (ParentFvPpi, ParentFvHandle, &ParentFvImageInfo);
ASSERT_EFI_ERROR (Status);
Status = ParentFvPpi->GetFileInfo (ParentFvPpi, ParentFvFileHandle, &FileInfo);
ASSERT_EFI_ERROR (Status);
//
// Install FvPpi and Build FvHob
//
PeiServicesInstallFvInfoPpi (
&FvHeader->FileSystemGuid,
(VOID**) FvHeader,
(UINT32) FvHeader->FvLength,
&ParentFvImageInfo.FvName,
&FileInfo.FileName
);
//
// Inform the extracted FvImage to Fv HOB consumer phase, i.e. DXE phase
//
BuildFvHob (
(EFI_PHYSICAL_ADDRESS) (UINTN) FvHeader,
FvHeader->FvLength
);
//
// Makes the encapsulated volume show up in DXE phase to skip processing of
// encapsulated file again.
//
BuildFv2Hob (
(EFI_PHYSICAL_ADDRESS) (UINTN) FvHeader,
FvHeader->FvLength,
&ParentFvImageInfo.FvName,
&FileInfo.FileName
);
return EFI_SUCCESS;
}
/**
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
)
{
EFI_STATUS Status;
ASSERT (FvHandle != NULL);
if (Buffer == NULL) {
return EFI_VOLUME_CORRUPTED;
}
//
// The build-in EFI_PEI_FIRMWARE_VOLUME_PPI for FFS2 support memory-mapped
// FV image and the handle is pointed to Fv image's buffer.
//
*FvHandle = (EFI_PEI_FV_HANDLE) Buffer;
//
// Do verify for given FV buffer.
//
Status = VerifyFv ((EFI_FIRMWARE_VOLUME_HEADER*) Buffer);
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_ERROR, "Fail to verify FV which address is 0x%11p", Buffer));
return EFI_VOLUME_CORRUPTED;
}
return EFI_SUCCESS;
}
/**
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
)
{
return FindFileEx (FvHandle, NULL, SearchType, FileHandle, NULL);
}
/**
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
)
{
EFI_STATUS Status;
PEI_CORE_INSTANCE *PrivateData;
UINTN Index;
if ((FvHandle == NULL) || (FileName == NULL) || (FileHandle == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (*FvHandle != NULL) {
Status = FindFileEx (*FvHandle, FileName, 0, FileHandle, NULL);
if (Status == EFI_NOT_FOUND) {
*FileHandle = NULL;
}
} else {
//
// If *FvHandle = NULL, so search all FV for given filename
//
Status = EFI_NOT_FOUND;
PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (GetPeiServicesTablePointer());
for (Index = 0; Index < PrivateData->FvCount; Index ++) {
//
// Only search the FV which is associated with a EFI_PEI_FIRMWARE_VOLUME_PPI instance.
//
if (PrivateData->Fv[Index].FvPpi != NULL) {
Status = FindFileEx (PrivateData->Fv[Index].FvHandle, FileName, 0, FileHandle, NULL);
if (!EFI_ERROR (Status)) {
*FvHandle = PrivateData->Fv[Index].FvHandle;
break;
}
}
}
}
return Status;
}
/**
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
)
{
UINT8 FileState;
UINT8 ErasePolarity;
EFI_FFS_FILE_HEADER *FileHeader;
PEI_CORE_FV_HANDLE *CoreFvHandle;
if ((FileHandle == NULL) || (FileInfo == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// Retrieve the FirmwareVolume which the file resides in.
//
CoreFvHandle = FileHandleToVolume (FileHandle);
if (CoreFvHandle == NULL) {
return EFI_INVALID_PARAMETER;
}
if ((CoreFvHandle->FvHeader->Attributes & EFI_FVB2_ERASE_POLARITY) != 0) {
ErasePolarity = 1;
} else {
ErasePolarity = 0;
}
//
// Get FileState which is the highest bit of the State
//
FileState = GetFileState (ErasePolarity, (EFI_FFS_FILE_HEADER*)FileHandle);
switch (FileState) {
case EFI_FILE_DATA_VALID:
case EFI_FILE_MARKED_FOR_UPDATE:
break;
default:
return EFI_INVALID_PARAMETER;
}
FileHeader = (EFI_FFS_FILE_HEADER *)FileHandle;
CopyMem (&FileInfo->FileName, &FileHeader->Name, sizeof(EFI_GUID));
FileInfo->FileType = FileHeader->Type;
FileInfo->FileAttributes = FileHeader->Attributes;
FileInfo->BufferSize = ((*(UINT32 *)FileHeader->Size) & 0x00FFFFFF) - sizeof (EFI_FFS_FILE_HEADER);
FileInfo->Buffer = (FileHeader + 1);
return EFI_SUCCESS;
}
/**
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
)
{
EFI_FIRMWARE_VOLUME_HEADER FwVolHeader;
EFI_FIRMWARE_VOLUME_EXT_HEADER *FwVolExHeaderInfo;
if ((VolumeInfo == NULL) || (FvHandle == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// VolumeHandle may not align at 8 byte,
// but FvLength is UINT64 type, which requires FvHeader align at least 8 byte.
// So, Copy FvHeader into the local FvHeader structure.
//
CopyMem (&FwVolHeader, FvHandle, sizeof (EFI_FIRMWARE_VOLUME_HEADER));
//
// Check Fv Image Signature
//
if (FwVolHeader.Signature != EFI_FVH_SIGNATURE) {
return EFI_INVALID_PARAMETER;
}
ZeroMem (VolumeInfo, sizeof (EFI_FV_INFO));
VolumeInfo->FvAttributes = FwVolHeader.Attributes;
VolumeInfo->FvStart = (VOID *) FvHandle;
VolumeInfo->FvSize = FwVolHeader.FvLength;
CopyMem (&VolumeInfo->FvFormat, &FwVolHeader.FileSystemGuid, sizeof(EFI_GUID));
if (FwVolHeader.ExtHeaderOffset != 0) {
FwVolExHeaderInfo = (EFI_FIRMWARE_VOLUME_EXT_HEADER*)(((UINT8 *)FvHandle) + FwVolHeader.ExtHeaderOffset);
CopyMem (&VolumeInfo->FvName, &FwVolExHeaderInfo->FvName, sizeof(EFI_GUID));
}
return EFI_SUCCESS;
}
/**
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
)
{
EFI_FFS_FILE_HEADER *FfsFileHeader;
UINT32 FileSize;
EFI_COMMON_SECTION_HEADER *Section;
FfsFileHeader = (EFI_FFS_FILE_HEADER *)(FileHandle);
//
// Size is 24 bits wide so mask upper 8 bits.
// Does not include FfsFileHeader header size
// FileSize is adjusted to FileOccupiedSize as it is 8 byte aligned.
//
Section = (EFI_COMMON_SECTION_HEADER *)(FfsFileHeader + 1);
FileSize = *(UINT32 *)(FfsFileHeader->Size) & 0x00FFFFFF;
FileSize -= sizeof (EFI_FFS_FILE_HEADER);
return ProcessSection (
GetPeiServicesTablePointer (),
SearchType,
Section,
FileSize,
SectionData
);
}
/**
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
)
{
UINTN Index;
PEI_CORE_INSTANCE *PrivateData;
PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (GetPeiServicesTablePointer());
for (Index = 0; Index < PrivateData->FvCount; Index ++) {
if (FvHandle == PrivateData->Fv[Index].FvHandle) {
return &PrivateData->Fv[Index];
}
}
return NULL;
}
/**
Get instance of PEI_CORE_FV_HANDLE for next volume according to given index.
This routine also will install FvInfo ppi for FV hob in PI ways.
@param Private Pointer of PEI_CORE_INSTANCE
@param Instance The index of FV want to be searched.
@return Instance of PEI_CORE_FV_HANDLE.
**/
PEI_CORE_FV_HANDLE *
FindNextCoreFvHandle (
IN PEI_CORE_INSTANCE *Private,
IN UINTN Instance
)
{
UINTN Index;
BOOLEAN Match;
EFI_HOB_FIRMWARE_VOLUME *FvHob;
//
// Handle Framework FvHob and Install FvInfo Ppi for it.
//
if (FeaturePcdGet (PcdFrameworkCompatibilitySupport)) {
//
// Loop to search the wanted FirmwareVolume which supports FFS
//
FvHob = (EFI_HOB_FIRMWARE_VOLUME *)GetFirstHob (EFI_HOB_TYPE_FV);
while (FvHob != NULL) {
//
// Search whether FvHob has been installed into PeiCore's FV database.
// If found, no need install new FvInfoPpi for it.
//
for (Index = 0, Match = FALSE; Index < Private->FvCount; Index++) {
if ((EFI_PEI_FV_HANDLE)(UINTN)FvHob->BaseAddress == Private->Fv[Index].FvHeader) {
Match = TRUE;
break;
}
}
//
// Search whether FvHob has been cached into PeiCore's Unknown FV database.
// If found, no need install new FvInfoPpi for it.
//
if (!Match) {
for (Index = 0; Index < Private->UnknownFvInfoCount; Index ++) {
if ((UINTN)FvHob->BaseAddress == (UINTN)Private->UnknownFvInfo[Index].FvInfo) {
Match = TRUE;
break;
}
}
}
//
// If the Fv in FvHob has not been installed into PeiCore's FV database and has
// not been cached into PeiCore's Unknown FV database, install a new FvInfoPpi
// for it then PeiCore will dispatch it in callback of FvInfoPpi.
//
if (!Match) {
PeiServicesInstallFvInfoPpi (
&(((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvHob->BaseAddress)->FileSystemGuid),
(VOID *)(UINTN)FvHob->BaseAddress,
(UINT32)FvHob->Length,
NULL,
NULL
);
}
FvHob = (EFI_HOB_FIRMWARE_VOLUME *)GetNextHob (EFI_HOB_TYPE_FV, (VOID *)((UINTN)FvHob + FvHob->Header.HobLength));
}
}
ASSERT (Private->FvCount <= FixedPcdGet32 (PcdPeiCoreMaxFvSupported));
if (Instance >= Private->FvCount) {
return NULL;
}
return &Private->Fv[Instance];
}
/**
After PeiCore image is shadowed into permanent memory, all build-in FvPpi should
be re-installed with the instance in permanent memory and all cached FvPpi pointers in
PrivateData->Fv[] array should be fixed up to be pointed to the one in permenant
memory.
@param PrivateData Pointer to PEI_CORE_INSTANCE.
**/
VOID
PeiReinitializeFv (
IN PEI_CORE_INSTANCE *PrivateData
)
{
VOID *OldFfs2FvPpi;
EFI_PEI_PPI_DESCRIPTOR *OldDescriptor;
UINTN Index;
EFI_STATUS Status;
//
// Locate old build-in Ffs2 EFI_PEI_FIRMWARE_VOLUME_PPI which
// in flash.
//
Status = PeiServicesLocatePpi (
&gEfiFirmwareFileSystem2Guid,
0,
&OldDescriptor,
&OldFfs2FvPpi
);
ASSERT_EFI_ERROR (Status);
//
// Re-install the EFI_PEI_FIRMWARE_VOLUME_PPI for build-in Ffs2
// which is shadowed from flash to permanent memory within PeiCore image.
//
Status = PeiServicesReInstallPpi (OldDescriptor, &mPeiFfs2FvPpiList);
ASSERT_EFI_ERROR (Status);
//
// Fixup all FvPpi pointers for the implementation in flash to permanent memory.
//
for (Index = 0; Index < FixedPcdGet32 (PcdPeiCoreMaxFvSupported); Index ++) {
if (PrivateData->Fv[Index].FvPpi == OldFfs2FvPpi) {
PrivateData->Fv[Index].FvPpi = &mPeiFfs2FvPpi;
}
}
}
/**
Report the information for a new discoveried FV in unknown third-party format.
If the EFI_PEI_FIRMWARE_VOLUME_PPI has not been installed for third-party FV format, but
the FV in this format has been discoveried, then this FV's information will be cached into
PEI_CORE_INSTANCE's UnknownFvInfo array.
Also a notification would be installed for unknown third-party FV format guid, if EFI_PEI_FIRMWARE_VOLUME_PPI
is installed later by platform's PEIM, the original unknown third-party FV will be processed by
using new installed EFI_PEI_FIRMWARE_VOLUME_PPI.
@param PrivateData Point to instance of PEI_CORE_INSTANCE
@param Format Point to the unknown third-party format guid.
@param FvInfo Point to FvInfo buffer.
@param FvInfoSize The size of FvInfo buffer.
@retval EFI_OUT_OF_RESOURCES The FV info array in PEI_CORE_INSTANCE has no more spaces.
@retval EFI_SUCCESS Success to add the information for unknown FV.
**/
EFI_STATUS
AddUnknownFormatFvInfo (
IN PEI_CORE_INSTANCE *PrivateData,
IN EFI_GUID *Format,
IN VOID *FvInfo,
IN UINT32 FvInfoSize
)
{
PEI_CORE_UNKNOW_FORMAT_FV_INFO *NewUnknownFv;
if (PrivateData->UnknownFvInfoCount + 1 >= FixedPcdGet32 (PcdPeiCoreMaxFvSupported)) {
return EFI_OUT_OF_RESOURCES;
}
NewUnknownFv = &PrivateData->UnknownFvInfo[PrivateData->UnknownFvInfoCount];
PrivateData->UnknownFvInfoCount ++;
CopyGuid (&NewUnknownFv->FvFormat, Format);
NewUnknownFv->FvInfo = FvInfo;
NewUnknownFv->FvInfoSize = FvInfoSize;
NewUnknownFv->NotifyDescriptor.Flags = (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST);
NewUnknownFv->NotifyDescriptor.Guid = &NewUnknownFv->FvFormat;
NewUnknownFv->NotifyDescriptor.Notify = ThirdPartyFvPpiNotifyCallback;
PeiServicesNotifyPpi (&NewUnknownFv->NotifyDescriptor);
return EFI_SUCCESS;
}
/**
Find the FV information according to third-party FV format guid.
This routine also will remove the FV information found by given FV format guid from
PrivateData->UnknownFvInfo[].
@param PrivateData Point to instance of PEI_CORE_INSTANCE
@param Format Point to given FV format guid
@param FvInfo On return, the pointer of FV information buffer
@param FvInfoSize On return, the size of FV information buffer.
@retval EFI_NOT_FOUND The FV is not found for new installed EFI_PEI_FIRMWARE_VOLUME_PPI
@retval EFI_SUCCESS Success to find a FV which could be processed by new installed EFI_PEI_FIRMWARE_VOLUME_PPI.
**/
EFI_STATUS
FindUnknownFormatFvInfo (
IN PEI_CORE_INSTANCE *PrivateData,
IN EFI_GUID *Format,
OUT VOID **FvInfo,
OUT UINT32 *FvInfoSize
)
{
UINTN Index;
UINTN Index2;
Index = 0;
for (; Index < PrivateData->UnknownFvInfoCount; Index ++) {
if (CompareGuid (Format, &PrivateData->UnknownFvInfo[Index].FvFormat)) {
break;
}
}
if (Index == PrivateData->UnknownFvInfoCount) {
return EFI_NOT_FOUND;
}
*FvInfo = PrivateData->UnknownFvInfo[Index].FvInfo;
*FvInfoSize = PrivateData->UnknownFvInfo[Index].FvInfoSize;
//
// Remove an entry from UnknownFvInfo array.
//
Index2 = Index + 1;
for (;Index2 < PrivateData->UnknownFvInfoCount; Index2 ++, Index ++) {
CopyMem (&PrivateData->UnknownFvInfo[Index], &PrivateData->UnknownFvInfo[Index2], sizeof (PEI_CORE_UNKNOW_FORMAT_FV_INFO));
}
PrivateData->UnknownFvInfoCount --;
return EFI_SUCCESS;
}
/**
Notification callback function for EFI_PEI_FIRMWARE_VOLUME_PPI.
When a EFI_PEI_FIRMWARE_VOLUME_PPI is installed to support new FV format, this
routine is called to process all discoveried FVs in this format.
@param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
@param NotifyDescriptor Address of the notification descriptor data structure.
@param Ppi Address of the PPI that was installed.
@retval EFI_SUCCESS The notification callback is processed correctly.
**/
EFI_STATUS
EFIAPI
ThirdPartyFvPpiNotifyCallback (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
IN VOID *Ppi
)
{
PEI_CORE_INSTANCE *PrivateData;
EFI_PEI_FIRMWARE_VOLUME_PPI *FvPpi;
VOID *FvInfo;
UINT32 FvInfoSize;
EFI_STATUS Status;
EFI_PEI_FV_HANDLE FvHandle;
BOOLEAN IsProcessed;
UINTN FvIndex;
EFI_PEI_FILE_HANDLE FileHandle;
VOID *DepexData;
PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);
FvPpi = (EFI_PEI_FIRMWARE_VOLUME_PPI*) Ppi;
do {
Status = FindUnknownFormatFvInfo (PrivateData, NotifyDescriptor->Guid, &FvInfo, &FvInfoSize);
if (EFI_ERROR (Status)) {
return EFI_SUCCESS;
}
//
// Process new found FV and get FV handle.
//
Status = FvPpi->ProcessVolume (FvPpi, FvInfo, FvInfoSize, &FvHandle);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Fail to process the FV 0x%p, FV may be corrupted!\n", FvInfo));
continue;
}
//
// Check whether the FV has already been processed.
//
IsProcessed = FALSE;
for (FvIndex = 0; FvIndex < PrivateData->FvCount; FvIndex ++) {
if (PrivateData->Fv[FvIndex].FvHandle == FvHandle) {
DEBUG ((EFI_D_INFO, "The Fv %p has already been processed!\n", FvInfo));
IsProcessed = TRUE;
break;
}
}
if (IsProcessed) {
continue;
}
if (PrivateData->FvCount >= FixedPcdGet32 (PcdPeiCoreMaxFvSupported)) {
DEBUG ((EFI_D_ERROR, "The number of Fv Images (%d) exceed the max supported FVs (%d) in Pei", PrivateData->FvCount + 1, FixedPcdGet32 (PcdPeiCoreMaxFvSupported)));
DEBUG ((EFI_D_ERROR, "PcdPeiCoreMaxFvSupported value need be reconfigurated in DSC"));
ASSERT (FALSE);
}
//
// Update internal PEI_CORE_FV array.
//
PrivateData->Fv[PrivateData->FvCount].FvHeader = (EFI_FIRMWARE_VOLUME_HEADER*) FvInfo;
PrivateData->Fv[PrivateData->FvCount].FvPpi = FvPpi;
PrivateData->Fv[PrivateData->FvCount].FvHandle = FvHandle;
DEBUG ((
EFI_D_INFO,
"The %dth FV start address is 0x%11p, size is 0x%08x, handle is 0x%p\n",
(UINT32) PrivateData->FvCount,
(VOID *) FvInfo,
FvInfoSize,
FvHandle
));
PrivateData->FvCount ++;
//
// Scan and process the new discoveried FV for EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE
//
FileHandle = NULL;
do {
Status = FvPpi->FindFileByType (
FvPpi,
EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE,
FvHandle,
&FileHandle
);
if (!EFI_ERROR (Status)) {
Status = FvPpi->FindSectionByType (
FvPpi,
EFI_SECTION_PEI_DEPEX,
FileHandle,
(VOID**)&DepexData
);
if (!EFI_ERROR (Status)) {
if (!PeimDispatchReadiness (PeiServices, DepexData)) {
//
// Dependency is not satisfied.
//
continue;
}
}
DEBUG ((EFI_D_INFO, "Found firmware volume Image File %p in FV[%d] %p\n", FileHandle, PrivateData->FvCount - 1, FvHandle));
ProcessFvFile (&PrivateData->Fv[PrivateData->FvCount - 1], FileHandle);
}
} while (FileHandle != NULL);
} while (TRUE);
}
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