diff options
Diffstat (limited to 'Board/EM/MeWrapper/AmtWrapper/Dxe/BdsBoot.c')
| -rw-r--r-- | Board/EM/MeWrapper/AmtWrapper/Dxe/BdsBoot.c | 809 |
1 files changed, 809 insertions, 0 deletions
diff --git a/Board/EM/MeWrapper/AmtWrapper/Dxe/BdsBoot.c b/Board/EM/MeWrapper/AmtWrapper/Dxe/BdsBoot.c new file mode 100644 index 0000000..15a57b1 --- /dev/null +++ b/Board/EM/MeWrapper/AmtWrapper/Dxe/BdsBoot.c @@ -0,0 +1,809 @@ +//************************************************************************* +//************************************************************************* +//** ** +//** (C)Copyright 1985-2010, American Megatrends, Inc. ** +//** ** +//** All Rights Reserved. ** +//** ** +//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +//** ** +//** Phone: (770)-246-8600 ** +//** ** +//************************************************************************* +//************************************************************************* +//********************************************************************** +// +// $Header: /Alaska/SOURCE/Modules/SharkBayRefCodes/ME/AmtWrapper/AmtWrapperDxe/BdsBoot.c 2 5/14/14 9:52p Tristinchou $ +// +// $Revision: 2 $ +// +// $Date: 5/14/14 9:52p $ +// +//********************************************************************** +// Revision History +// ---------------- +// $Log: /Alaska/SOURCE/Modules/SharkBayRefCodes/ME/AmtWrapper/AmtWrapperDxe/BdsBoot.c $ +// +// 2 5/14/14 9:52p Tristinchou +// [TAG] EIP167030 +// [Category] Improvement +// [Description] Remove the variable runtime attribute and keep original +// attributes. +// +// 1 2/08/12 1:08a Klzhan +// Initial Check in +// +// 1 2/25/11 1:43a Klzhan +// Initial Check-in +// +// 1 12/03/10 5:10a Klzhan +// Initial Check-in. +// +// +//********************************************************************** + +//<AMI_FHDR_START> +//---------------------------------------------------------------------------- +// +// Name: BdsBoot.c +// +// Description: Create or Process Boot option by AMT. +// +//---------------------------------------------------------------------------- +//<AMI_FHDR_END> +/*++ + +Copyright (c) 2004, Intel Corporation +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. + +Module Name: + + BdsBoot.c + +Abstract: + + BDS Lib functions which relate with create or process the boot + option. + +--*/ + +#include "BdsLib.h" + +BOOLEAN mEnumBootDevice = FALSE; + +EFI_STATUS +BdsLibDoLegacyBoot ( + IN BDS_COMMON_OPTION *Option + ) +/*++ + +Routine Description: + + Boot the legacy system with the boot option + +Arguments: + + Option - The legacy boot option which have BBS device path + +Returns: + + EFI_UNSUPPORTED - There is no legacybios protocol, do not support + legacy boot. + + EFI_STATUS - Return the status of LegacyBios->LegacyBoot (). + +--*/ +{ + EFI_STATUS Status; + EFI_LEGACY_BIOS_PROTOCOL *LegacyBios; + + Status = gBS->LocateProtocol (&gEfiLegacyBiosProtocolGuid, NULL, &LegacyBios); + if (EFI_ERROR (Status)) { + // + // If no LegacyBios protocol we do not support legacy boot + // + return EFI_UNSUPPORTED; + } + // + // Notes: if we seperate the int 19, then we don't need to refresh BBS + // + BdsRefreshBbsTableForBoot (Option); + + // + // Write boot to OS performance data to a file + // + WRITE_BOOT_TO_OS_PERFORMANCE_DATA; + + DEBUG ((EFI_D_INFO | EFI_D_LOAD, "Legacy Boot: %S\n", Option->Description)); + return LegacyBios->LegacyBoot ( + LegacyBios, + (BBS_BBS_DEVICE_PATH *) Option->DevicePath, + Option->LoadOptionsSize, + Option->LoadOptions + ); +} + +EFI_STATUS +BdsLibBootViaBootOption ( + IN BDS_COMMON_OPTION * Option, + IN EFI_DEVICE_PATH_PROTOCOL * DevicePath, + OUT UINTN *ExitDataSize, + OUT CHAR16 **ExitData OPTIONAL + ) +/*++ + +Routine Description: + + Process the boot option follow the EFI 1.1 specification and + special treat the legacy boot option with BBS_DEVICE_PATH. + +Arguments: + + Option - The boot option need to be processed + + DevicePath - The device path which describe where to load + the boot image or the legcy BBS device path + to boot the legacy OS + + ExitDataSize - Returned directly from gBS->StartImage () + + ExitData - Returned directly from gBS->StartImage () + +Returns: + + EFI_SUCCESS - Status from gBS->StartImage (), + or BdsBootByDiskSignatureAndPartition () + + EFI_NOT_FOUND - If the Device Path is not found in the system + +--*/ +{ + EFI_STATUS Status; + EFI_HANDLE Handle; + EFI_HANDLE ImageHandle; + EFI_DEVICE_PATH_PROTOCOL *TempDevicePath; + EFI_DEVICE_PATH_PROTOCOL *FilePath; + EFI_LOADED_IMAGE_PROTOCOL *ImageInfo; + EFI_EVENT ReadyToBootEvent; + EFI_ACPI_S3_SAVE_PROTOCOL *AcpiS3Save; + EFI_LIST_ENTRY TempBootLists; + UINT32 VarAttr; + UINTN VarSize; +//;;## EFI_TCG_PLATFORM_PROTOCOL *TcgPlatformProtocol; + + *ExitDataSize = 0; + *ExitData = NULL; + + // + // Notes: put EFI64 ROM Shadow Solution + // + EFI64_SHADOW_ALL_LEGACY_ROM (); + + // + // Notes: this code can be remove after the s3 script table + // hook on the event EFI_EVENT_SIGNAL_READY_TO_BOOT or + // EFI_EVENT_SIGNAL_LEGACY_BOOT + // + Status = gBS->LocateProtocol (&gEfiAcpiS3SaveGuid, NULL, &AcpiS3Save); + if (!EFI_ERROR (Status)) { + AcpiS3Save->S3Save (AcpiS3Save, NULL); + } + // + // If it's Device Path that starts with a hard drive path, + // this routine will do the booting. + // + Status = BdsBootByDiskSignatureAndPartition ( + Option, + (HARDDRIVE_DEVICE_PATH *) DevicePath, + Option->LoadOptionsSize, + Option->LoadOptions, + ExitDataSize, + ExitData + ); + if (!EFI_ERROR (Status)) { + // + // If we found a disk signature and partition device path return success + // + return EFI_SUCCESS; + } + // + // Signal the EFI_EVENT_SIGNAL_READY_TO_BOOT event + // + +// AMI Override: Replace +// Abstract: Modified for EFI 2.0 required +#if defined(EFI_EVENT_SIGNAL_READY_TO_BOOT) && EFI_SPECIFICATION_VERSION<0x20000 + Status = gBS->CreateEvent( + EFI_EVENT_SIGNAL_READY_TO_BOOT | EFI_EVENT_NOTIFY_SIGNAL_ALL, + EFI_TPL_CALLBACK, + NULL, + NULL, + &ReadyToBootEvent + ); +#else + Status = EfiCreateEventReadyToBoot( + EFI_TPL_CALLBACK, + NULL, + NULL, + &ReadyToBootEvent + ); +#endif +// AMI Override End + if (!EFI_ERROR (Status)) { + gBS->SignalEvent (ReadyToBootEvent); + gBS->CloseEvent (ReadyToBootEvent); + } + // + // Set Boot Current + // + VarAttr = 0; + VarSize = 0; + + Status = gRT->GetVariable( + L"BootCurrent", + &gEfiGlobalVariableGuid, + &VarAttr, + &VarSize, + NULL ); + if( EFI_ERROR(Status) && (Status != EFI_BUFFER_TOO_SMALL) ) + { + VarAttr = EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS; + VarSize = sizeof(UINT16); + } + + gRT->SetVariable( + L"BootCurrent", + &gEfiGlobalVariableGuid, + VarAttr, + VarSize, + &Option->BootCurrent ); + + if ((DevicePathType (Option->DevicePath) == BBS_DEVICE_PATH) && + (DevicePathSubType (Option->DevicePath) == BBS_BBS_DP) + ) { + // + // Check to see if we should legacy BOOT. If yes then do the legacy boot + // + return BdsLibDoLegacyBoot (Option); + } + + // + // If the boot option point to Internal FV shell, make sure it is valid + // + Status = BdsLibUpdateFvFileDevicePath (&DevicePath, &gEfiShellFileGuid); + if (!EFI_ERROR(Status)) { + if (Option->DevicePath != NULL) { + gBS->FreePool(Option->DevicePath); + } + Option->DevicePath = EfiLibAllocateZeroPool (EfiDevicePathSize (DevicePath)); + EfiCopyMem (Option->DevicePath, DevicePath, EfiDevicePathSize (DevicePath)); + // + // Update the shell boot option + // + InitializeListHead (&TempBootLists); + BdsLibRegisterNewOption (&TempBootLists, DevicePath, L"EFI Internal Shell", L"BootOrder"); + // + // free the temporary device path created by BdsLibUpdateFvFileDevicePath() + // + gBS->FreePool (DevicePath); + DevicePath = Option->DevicePath; + } +/* //;;## + // + // Measure GPT Table + // + Status = gBS->LocateProtocol ( + &gEfiTcgPlatformProtocolGuid, + NULL, + &TcgPlatformProtocol + ); + if (!EFI_ERROR (Status)) { + Status = TcgPlatformProtocol->MeasureGptTable (DevicePath); + } +*/ //;;## + + // + // Drop the TPL level from EFI_TPL_DRIVER to EFI_TPL_APPLICATION + // + gBS->RestoreTPL (EFI_TPL_APPLICATION); + + DEBUG ((EFI_D_INFO | EFI_D_LOAD, "Booting EFI 1.1 way %S\n", Option->Description)); + + Status = gBS->LoadImage ( + TRUE, + mBdsImageHandle, + DevicePath, + NULL, + 0, + &ImageHandle + ); + + // + // If we didn't find an image, we may need to load the default + // boot behavior for the device. + // + if (EFI_ERROR (Status)) { + // + // Find a Simple File System protocol on the device path. If the remaining + // device path is set to end then no Files are being specified, so try + // the removable media file name. + // + TempDevicePath = DevicePath; + Status = gBS->LocateDevicePath ( + &gEfiSimpleFileSystemProtocolGuid, + &TempDevicePath, + &Handle + ); + if (!EFI_ERROR (Status) && IsDevicePathEnd (TempDevicePath)) { + FilePath = EfiFileDevicePath (Handle, DEFAULT_REMOVABLE_FILE_NAME); + if (FilePath) { + Status = gBS->LoadImage ( + TRUE, + mBdsImageHandle, + FilePath, + NULL, + 0, + &ImageHandle + ); + if (EFI_ERROR (Status)) { + // + // The DevicePath failed, and it's not a valid + // removable media device. + // + goto Done; + } + } + } else { + Status = EFI_NOT_FOUND; + } + } + + if (EFI_ERROR (Status)) { + // + // It there is any error from the Boot attempt exit now. + // + goto Done; + } + // + // Provide the image with it's load options + // + Status = gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid, &ImageInfo); + ASSERT_EFI_ERROR (Status); + + if (Option->LoadOptionsSize != 0) { + ImageInfo->LoadOptionsSize = Option->LoadOptionsSize; + ImageInfo->LoadOptions = Option->LoadOptions; + } + // + // Before calling the image, enable the Watchdog Timer for + // the 5 Minute period + // + gBS->SetWatchdogTimer (5 * 60, 0x0000, 0x00, NULL); + + Status = gBS->StartImage (ImageHandle, ExitDataSize, ExitData); + DEBUG ((EFI_D_INFO | EFI_D_LOAD, "Image Return Status = %r\n", Status)); + + // + // Clear the Watchdog Timer after the image returns + // + gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL); + +Done: + // + // Clear Boot Current + // + gRT->SetVariable( + L"BootCurrent", + &gEfiGlobalVariableGuid, + VarAttr, + 0, + &Option->BootCurrent ); + + // + // Raise the TPL level back to EFI_TPL_DRIVER + // + gBS->RaiseTPL (EFI_TPL_DRIVER); + + return Status; +} + +EFI_STATUS +BdsBootByDiskSignatureAndPartition ( + IN BDS_COMMON_OPTION * Option, + IN HARDDRIVE_DEVICE_PATH * HardDriveDevicePath, + IN UINT32 LoadOptionsSize, + IN VOID *LoadOptions, + OUT UINTN *ExitDataSize, + OUT CHAR16 **ExitData OPTIONAL + ) +/*++ + +Routine Description: + + Check to see if a hard ware device path was passed in. If it was then search + all the block IO devices for the passed in hard drive device path. + +Arguments: + + Option - The current processing boot option. + + HardDriveDevicePath - EFI Device Path to boot, if it starts with a hard + drive device path. + + LoadOptionsSize - Passed into gBS->StartImage () + via the loaded image protocol. + + LoadOptions - Passed into gBS->StartImage () + via the loaded image protocol. + + ExitDataSize - returned directly from gBS->StartImage () + + ExitData - returned directly from gBS->StartImage () + +Returns: + + EFI_SUCCESS - Status from gBS->StartImage (), + or BootByDiskSignatureAndPartition () + + EFI_NOT_FOUND - If the Device Path is not found in the system + +--*/ +{ + EFI_STATUS Status; + UINTN BlockIoHandleCount; + EFI_HANDLE *BlockIoBuffer; + EFI_DEVICE_PATH_PROTOCOL *BlockIoDevicePath; + EFI_DEVICE_PATH_PROTOCOL *BlockIoHdDevicePath; + HARDDRIVE_DEVICE_PATH *TmpHdPath; + EFI_DEVICE_PATH_PROTOCOL *DevicePath; + EFI_DEVICE_PATH_PROTOCOL *NewDevicePath; + UINTN Index; + BOOLEAN DevicePathMatch; + HARDDRIVE_DEVICE_PATH *TempPath; + + *ExitDataSize = 0; + *ExitData = NULL; + + if ( !((DevicePathType (&HardDriveDevicePath->Header) == MEDIA_DEVICE_PATH) && + (DevicePathSubType (&HardDriveDevicePath->Header) == MEDIA_HARDDRIVE_DP)) + ) { + // + // If the HardDriveDevicePath does not start with a Hard Drive Device Path + // exit. + // + return EFI_NOT_FOUND; + } + // + // The boot device have already been connected + // + Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiBlockIoProtocolGuid, NULL, &BlockIoHandleCount, &BlockIoBuffer); + if (EFI_ERROR (Status) || BlockIoHandleCount == 0) { + // + // If there was an error or there are no device handles that support + // the BLOCK_IO Protocol, then return. + // + return EFI_NOT_FOUND; + } + // + // Loop through all the device handles that support the BLOCK_IO Protocol + // + for (Index = 0; Index < BlockIoHandleCount; Index++) { + + Status = gBS->HandleProtocol (BlockIoBuffer[Index], &gEfiDevicePathProtocolGuid, (VOID *) &BlockIoDevicePath); + if (EFI_ERROR (Status) || BlockIoDevicePath == NULL) { + continue; + } + // + // Make PreviousDevicePath == the device path node before the end node + // + DevicePath = BlockIoDevicePath; + BlockIoHdDevicePath = NULL; + + // + // find HardDriver device path node + // + while (!IsDevicePathEnd (DevicePath)) { + if ((DevicePathType (DevicePath) == MEDIA_DEVICE_PATH) && + (DevicePathSubType (DevicePath) == MEDIA_HARDDRIVE_DP) + ) { + BlockIoHdDevicePath = DevicePath; + break; + } + + DevicePath = NextDevicePathNode (DevicePath); + } + + if (BlockIoHdDevicePath == NULL) { + continue; + } + // + // See if the harddrive device path in blockio matches the orig Hard Drive Node + // + DevicePathMatch = FALSE; + + TmpHdPath = (HARDDRIVE_DEVICE_PATH *) BlockIoHdDevicePath; + TempPath = (HARDDRIVE_DEVICE_PATH *) BdsLibUnpackDevicePath ((EFI_DEVICE_PATH_PROTOCOL *) HardDriveDevicePath); + + // + // Only several fields will be checked. NOT whole NODE + // + if ( TmpHdPath->PartitionNumber == TempPath->PartitionNumber && + TmpHdPath->MBRType == TempPath->MBRType && + TmpHdPath->SignatureType == TempPath->SignatureType && + EfiCompareGuid ((EFI_GUID *) TmpHdPath->Signature, (EFI_GUID *) TempPath->Signature)) { + // + // Get the matched device path + // + DevicePathMatch = TRUE; + } + // + // Only do the boot, when devicepath match + // + if (DevicePathMatch) { + // + // Combine the Block IO and Hard Drive Device path together and try + // to boot from it. + // + DevicePath = NextDevicePathNode ((EFI_DEVICE_PATH_PROTOCOL *) HardDriveDevicePath); + NewDevicePath = EfiAppendDevicePath (BlockIoDevicePath, DevicePath); + + // + // Recursive boot with new device path + // + Status = BdsLibBootViaBootOption (Option, NewDevicePath, ExitDataSize, ExitData); + if (!EFI_ERROR (Status)) { + break; + } + } + } + + gBS->FreePool (BlockIoBuffer); + return Status; +} + + +EFI_STATUS +EFIAPI +BdsLibUpdateFvFileDevicePath ( + IN OUT EFI_DEVICE_PATH_PROTOCOL ** DevicePath, + IN EFI_GUID *FileGuid + ) +/*++ + +Routine Description: + According to a file guild, check a Fv file device path is valid. If it is invalid, + try to return the valid device path. + FV address maybe changes for memory layout adjust from time to time, use this funciton + could promise the Fv file device path is right. + +Arguments: + DevicePath - on input, the Fv file device path need to check + on output, the updated valid Fv file device path + + FileGuid - the Fv file guild + +Returns: + EFI_INVALID_PARAMETER - the input DevicePath or FileGuid is invalid parameter + EFI_UNSUPPORTED - the input DevicePath does not contain Fv file guild at all + EFI_ALREADY_STARTED - the input DevicePath has pointed to Fv file, it is valid + EFI_SUCCESS - has successfully updated the invalid DevicePath, and return the updated + device path in DevicePath + +--*/ +{ + EFI_DEVICE_PATH_PROTOCOL *TempDevicePath; + EFI_DEVICE_PATH_PROTOCOL *LastDeviceNode; + EFI_STATUS Status; + EFI_GUID *GuidPoint; + UINTN Index; + UINTN FvHandleCount; + EFI_HANDLE *FvHandleBuffer; + EFI_FV_FILETYPE Type; + UINTN Size; + EFI_FV_FILE_ATTRIBUTES Attributes; + UINT32 AuthenticationStatus; + BOOLEAN FindFvFile; + EFI_LOADED_IMAGE_PROTOCOL *LoadedImage; +#if (PI_SPECIFICATION_VERSION < 0x00010000) + EFI_FIRMWARE_VOLUME_PROTOCOL *Fv; +#else + EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv; +#endif + MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FvFileNode; + EFI_HANDLE FoundFvHandle; + EFI_DEVICE_PATH_PROTOCOL *NewDevicePath; + + if ((DevicePath == NULL) || (*DevicePath == NULL)) { + return EFI_INVALID_PARAMETER; + } + if (FileGuid == NULL) { + return EFI_INVALID_PARAMETER; + } + // + // Check whether the device path point to the default the input Fv file + // + TempDevicePath = *DevicePath; + LastDeviceNode = TempDevicePath; + while (!EfiIsDevicePathEnd (TempDevicePath)) { + LastDeviceNode = TempDevicePath; + TempDevicePath = EfiNextDevicePathNode (TempDevicePath); + } + GuidPoint = EfiGetNameGuidFromFwVolDevicePathNode ( + (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) LastDeviceNode + ); + if (GuidPoint == NULL) { + // + // if this option does not points to a Fv file, just return EFI_UNSUPPORTED + // + return EFI_UNSUPPORTED; + } + if (!EfiCompareGuid (GuidPoint, FileGuid)) { + // + // If the Fv file is not the input file guid, just return EFI_UNSUPPORTED + // + return EFI_UNSUPPORTED; + } + + // + // Check whether the input Fv file device path is valid + // + TempDevicePath = *DevicePath; + FoundFvHandle = NULL; + Status = gBS->LocateDevicePath ( + #if (PI_SPECIFICATION_VERSION < 0x00010000) + &gEfiFirmwareVolumeProtocolGuid, + #else + &gEfiFirmwareVolume2ProtocolGuid, + #endif + &TempDevicePath, + &FoundFvHandle + ); + if (!EFI_ERROR (Status)) { + Status = gBS->HandleProtocol ( + FoundFvHandle, + #if (PI_SPECIFICATION_VERSION < 0x00010000) + &gEfiFirmwareVolumeProtocolGuid, + #else + &gEfiFirmwareVolume2ProtocolGuid, + #endif + (VOID **) &Fv + ); + if (!EFI_ERROR (Status)) { + // + // Set FV ReadFile Buffer as NULL, only need to check whether input Fv file exist there + // + Status = Fv->ReadFile ( + Fv, + FileGuid, + NULL, + &Size, + &Type, + &Attributes, + &AuthenticationStatus + ); + if (!EFI_ERROR (Status)) { + return EFI_ALREADY_STARTED; + } + } + } + + // + // Look for the input wanted FV file in current FV + // First, try to look for in Bds own FV. Bds and input wanted FV file usually are in the same FV + // + FindFvFile = FALSE; + FoundFvHandle = NULL; + Status = gBS->HandleProtocol ( + mBdsImageHandle, + &gEfiLoadedImageProtocolGuid, + &LoadedImage + ); + if (!EFI_ERROR (Status)) { + Status = gBS->HandleProtocol ( + LoadedImage->DeviceHandle, + #if (PI_SPECIFICATION_VERSION < 0x00010000) + &gEfiFirmwareVolumeProtocolGuid, + #else + &gEfiFirmwareVolume2ProtocolGuid, + #endif + (VOID **) &Fv + ); + if (!EFI_ERROR (Status)) { + Status = Fv->ReadFile ( + Fv, + FileGuid, + NULL, + &Size, + &Type, + &Attributes, + &AuthenticationStatus + ); + if (!EFI_ERROR (Status)) { + FindFvFile = TRUE; + FoundFvHandle = LoadedImage->DeviceHandle; + } + } + } + // + // Second, if fail to find, try to enumerate all FV + // + if (!FindFvFile) { + FvHandleBuffer = NULL; + gBS->LocateHandleBuffer ( + ByProtocol, + #if (PI_SPECIFICATION_VERSION < 0x00010000) + &gEfiFirmwareVolumeProtocolGuid, + #else + &gEfiFirmwareVolume2ProtocolGuid, + #endif + NULL, + &FvHandleCount, + &FvHandleBuffer + ); + for (Index = 0; Index < FvHandleCount; Index++) { + gBS->HandleProtocol ( + FvHandleBuffer[Index], + #if (PI_SPECIFICATION_VERSION < 0x00010000) + &gEfiFirmwareVolumeProtocolGuid, + #else + &gEfiFirmwareVolume2ProtocolGuid, + #endif + (VOID **) &Fv + ); + + Status = Fv->ReadFile ( + Fv, + FileGuid, + NULL, + &Size, + &Type, + &Attributes, + &AuthenticationStatus + ); + if (EFI_ERROR (Status)) { + // + // Skip if input Fv file not in the FV + // + continue; + } + FindFvFile = TRUE; + FoundFvHandle = FvHandleBuffer[Index]; + break; + } + + if (FvHandleBuffer !=NULL ) { + gBS->FreePool (FvHandleBuffer); + } + } + + if (FindFvFile) { + // + // Build the shell device path + // + NewDevicePath = EfiDevicePathFromHandle (FoundFvHandle); + EfiInitializeFwVolDevicepathNode (&FvFileNode, FileGuid); + NewDevicePath = EfiAppendDevicePathNode (NewDevicePath, (EFI_DEVICE_PATH_PROTOCOL *) &FvFileNode); + *DevicePath = NewDevicePath; + return EFI_SUCCESS; + } + return EFI_NOT_FOUND; +} +//************************************************************************* +//************************************************************************* +//** ** +//** (C)Copyright 1985-2010, American Megatrends, Inc. ** +//** ** +//** All Rights Reserved. ** +//** ** +//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +//** ** +//** Phone: (770)-246-8600 ** +//** ** +//************************************************************************* +//*************************************************************************
\ No newline at end of file |