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/** @file
*
* Copyright (c) 2011, ARM Limited. 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.
*
**/
#include "BdsInternal.h"
EFI_STATUS BdsLoadFileFromFirmwareVolume(
IN EFI_HANDLE FvHandle,
IN CHAR16 *FilePath,
IN EFI_FV_FILETYPE FileTypeFilter,
OUT BDS_FILE *File
) {
EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol;
VOID *Key;
EFI_STATUS Status, FileStatus;
EFI_GUID NameGuid;
EFI_FV_FILETYPE FileType;
EFI_FV_FILE_ATTRIBUTES Attributes;
UINTN Size;
UINTN UiStringLen;
CHAR16 *UiSection;
UINT32 Authentication;
if (File == NULL) {
return EFI_INVALID_PARAMETER;
}
Status = gBS->HandleProtocol(FvHandle,&gEfiFirmwareVolume2ProtocolGuid, (VOID **)&FvProtocol);
if (EFI_ERROR(Status)) {
return Status;
}
// Length of FilePath
UiStringLen = StrLen (FilePath);
// Allocate Key
Key = AllocatePool (FvProtocol->KeySize);
ASSERT (Key != NULL);
ZeroMem (Key, FvProtocol->KeySize);
do {
// Search in all files
FileType = FileTypeFilter;
Status = FvProtocol->GetNextFile (FvProtocol, Key, &FileType, &NameGuid, &Attributes, &Size);
if (!EFI_ERROR (Status)) {
UiSection = NULL;
FileStatus = FvProtocol->ReadSection (
FvProtocol,
&NameGuid,
EFI_SECTION_USER_INTERFACE,
0,
(VOID **)&UiSection,
&Size,
&Authentication
);
if (!EFI_ERROR (FileStatus)) {
if (StrnCmp (FilePath, UiSection, UiStringLen) == 0) {
//
// We found a UiString match.
//
//*FileGuid = NameGuid;
File->Type = BDS_FILETYPE_FV;
File->FilePath = FilePath;
CopyGuid (&(File->File.Fv.Guid),&NameGuid);
File->File.Fv.FvProtocol = FvProtocol;
File->File.Fv.FileType = FileType;
Status = gBS->HandleProtocol(FvHandle,&gEfiDevicePathProtocolGuid, (VOID **)&(File->DevicePath));
FreePool (Key);
FreePool (UiSection);
return FileStatus;
}
FreePool (UiSection);
}
}
} while (!EFI_ERROR (Status));
FreePool(Key);
return Status;
}
EFI_STATUS BdsCopyRawFileToRuntimeMemoryFV(
IN BDS_FV_FILE *FvFile,
OUT VOID **FileImage,
OUT UINTN *FileSize
) {
EFI_STATUS Status = EFI_INVALID_PARAMETER;
EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol;
EFI_FV_FILETYPE FileType;
EFI_GUID* NameGuid;
EFI_FV_FILE_ATTRIBUTES Attributes;
UINT32 Authentication;
FvProtocol = FvFile->FvProtocol;
FileType = FvFile->FileType;
NameGuid = &(FvFile->Guid);
if (FileType == EFI_FV_FILETYPE_RAW) {
*FileImage = NULL;
*FileSize = 0;
Status = FvProtocol->ReadFile(
FvProtocol,NameGuid, // IN
FileImage,FileSize, // IN OUT
&FileType,&Attributes,&Authentication // OUT
);
ASSERT_EFI_ERROR(Status);
// This raw file also contains a header
*FileSize = *FileSize - 4;
*FileImage = (UINT8*)FileImage + 4;
} else if (FileType == EFI_FV_FILETYPE_FREEFORM) {
Status = FvProtocol->ReadSection (
FvProtocol,NameGuid,EFI_SECTION_RAW,0, // IN
FileImage,FileSize, // IN OUT
&Authentication // OUT
);
ASSERT_EFI_ERROR(Status);
} else {
ASSERT(0); //Maybe support application as well ???
}
return Status;
}
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