+++ /dev/null
-/** @file\r
- BDS Lib functions which relate with create or process the boot option.\r
-\r
-Copyright (c) 2004 - 2008, Intel Corporation. <BR>\r
-All rights reserved. This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include "InternalBdsLib.h"\r
-\r
-BOOLEAN mEnumBootDevice = FALSE;\r
-\r
-///\r
-/// This GUID is used for an EFI Variable that stores the front device pathes\r
-/// for a partial device path that starts with the HD node.\r
-///\r
-EFI_GUID mHdBootVariablePrivateGuid = { 0xfab7e9e1, 0x39dd, 0x4f2b, { 0x84, 0x8, 0xe2, 0xe, 0x90, 0x6c, 0xb6, 0xde } };\r
-\r
-\r
-\r
-/**\r
- Boot the legacy system with the boot option\r
-\r
- @param Option The legacy boot option which have BBS device path\r
-\r
- @retval EFI_UNSUPPORTED There is no legacybios protocol, do not support\r
- legacy boot.\r
- @retval EFI_STATUS Return the status of LegacyBios->LegacyBoot ().\r
-\r
-**/\r
-EFI_STATUS\r
-BdsLibDoLegacyBoot (\r
- IN BDS_COMMON_OPTION *Option\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;\r
-\r
- Status = gBS->LocateProtocol (&gEfiLegacyBiosProtocolGuid, NULL, (VOID **) &LegacyBios);\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // If no LegacyBios protocol we do not support legacy boot\r
- //\r
- return EFI_UNSUPPORTED;\r
- }\r
- //\r
- // Notes: if we separate the int 19, then we don't need to refresh BBS\r
- //\r
- BdsRefreshBbsTableForBoot (Option);\r
-\r
- //\r
- // Write boot to OS performance data to a file\r
- //\r
- PERF_CODE (\r
- WriteBootToOsPerformanceData ();\r
- );\r
-\r
- DEBUG ((DEBUG_INFO | DEBUG_LOAD, "Legacy Boot: %S\n", Option->Description));\r
- return LegacyBios->LegacyBoot (\r
- LegacyBios,\r
- (BBS_BBS_DEVICE_PATH *) Option->DevicePath,\r
- Option->LoadOptionsSize,\r
- Option->LoadOptions\r
- );\r
-}\r
-\r
-\r
-/**\r
- Process the boot option follow the UEFI specification and\r
- special treat the legacy boot option with BBS_DEVICE_PATH.\r
-\r
- @param Option The boot option need to be processed\r
- @param DevicePath The device path which describe where to load the\r
- boot image or the legacy BBS device path to boot\r
- the legacy OS\r
- @param ExitDataSize The size of exit data.\r
- @param ExitData Data returned when Boot image failed.\r
-\r
- @retval EFI_SUCCESS Boot from the input boot option successfully.\r
- @retval EFI_NOT_FOUND If the Device Path is not found in the system\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-BdsLibBootViaBootOption (\r
- IN BDS_COMMON_OPTION *Option,\r
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r
- OUT UINTN *ExitDataSize,\r
- OUT CHAR16 **ExitData OPTIONAL\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_HANDLE Handle;\r
- EFI_HANDLE ImageHandle;\r
- EFI_DEVICE_PATH_PROTOCOL *FilePath;\r
- EFI_LOADED_IMAGE_PROTOCOL *ImageInfo;\r
- EFI_DEVICE_PATH_PROTOCOL *WorkingDevicePath;\r
- EFI_ACPI_S3_SAVE_PROTOCOL *AcpiS3Save;\r
- LIST_ENTRY TempBootLists;\r
-\r
- //\r
- // Record the performance data for End of BDS\r
- //\r
- PERF_END (0, BDS_TOK, NULL, 0);\r
-\r
- *ExitDataSize = 0;\r
- *ExitData = NULL;\r
-\r
- //\r
- // Notes: put EFI64 ROM Shadow Solution\r
- //\r
- EFI64_SHADOW_ALL_LEGACY_ROM ();\r
-\r
- //\r
- // Notes: this code can be remove after the s3 script table\r
- // hook on the event EVT_SIGNAL_READY_TO_BOOT or\r
- // EVT_SIGNAL_LEGACY_BOOT\r
- //\r
- Status = gBS->LocateProtocol (&gEfiAcpiS3SaveProtocolGuid, NULL, (VOID **) &AcpiS3Save);\r
- if (!EFI_ERROR (Status)) {\r
- AcpiS3Save->S3Save (AcpiS3Save, NULL);\r
- }\r
- //\r
- // If it's Device Path that starts with a hard drive path, append it with the front part to compose a\r
- // full device path\r
- //\r
- WorkingDevicePath = NULL;\r
- if ((DevicePathType (DevicePath) == MEDIA_DEVICE_PATH) &&\r
- (DevicePathSubType (DevicePath) == MEDIA_HARDDRIVE_DP)) {\r
- WorkingDevicePath = BdsExpandPartitionPartialDevicePathToFull (\r
- (HARDDRIVE_DEVICE_PATH *)DevicePath\r
- );\r
- if (WorkingDevicePath != NULL) {\r
- DevicePath = WorkingDevicePath;\r
- }\r
- }\r
- //\r
- // Signal the EVT_SIGNAL_READY_TO_BOOT event\r
- //\r
- EfiSignalEventReadyToBoot();\r
- \r
- \r
- //\r
- // Set Boot Current\r
- //\r
- gRT->SetVariable (\r
- L"BootCurrent",\r
- &gEfiGlobalVariableGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r
- sizeof (UINT16),\r
- &Option->BootCurrent\r
- );\r
-\r
- ASSERT (Option->DevicePath != NULL);\r
- if ((DevicePathType (Option->DevicePath) == BBS_DEVICE_PATH) &&\r
- (DevicePathSubType (Option->DevicePath) == BBS_BBS_DP)\r
- ) {\r
- //\r
- // Check to see if we should legacy BOOT. If yes then do the legacy boot\r
- //\r
- return BdsLibDoLegacyBoot (Option);\r
- }\r
-\r
- //\r
- // If the boot option point to Internal FV shell, make sure it is valid\r
- //\r
- Status = BdsLibUpdateFvFileDevicePath (&DevicePath, &gEfiShellFileGuid);\r
- if (!EFI_ERROR(Status)) {\r
- if (Option->DevicePath != NULL) {\r
- FreePool(Option->DevicePath);\r
- }\r
- Option->DevicePath = AllocateZeroPool (GetDevicePathSize (DevicePath));\r
- ASSERT(Option->DevicePath != NULL);\r
- CopyMem (Option->DevicePath, DevicePath, GetDevicePathSize (DevicePath));\r
- //\r
- // Update the shell boot option\r
- //\r
- InitializeListHead (&TempBootLists);\r
- BdsLibRegisterNewOption (&TempBootLists, DevicePath, L"EFI Internal Shell", L"BootOrder");\r
- \r
- //\r
- // free the temporary device path created by BdsLibUpdateFvFileDevicePath()\r
- //\r
- FreePool (DevicePath); \r
- DevicePath = Option->DevicePath;\r
- }\r
-\r
- DEBUG ((DEBUG_INFO | DEBUG_LOAD, "Booting %S\n", Option->Description));\r
-\r
- Status = gBS->LoadImage (\r
- TRUE,\r
- mBdsImageHandle,\r
- DevicePath,\r
- NULL,\r
- 0,\r
- &ImageHandle\r
- );\r
-\r
- //\r
- // If we didn't find an image directly, we need to try as if it is a removable device boot opotion\r
- // and load the image according to the default boot behavior for removable device.\r
- //\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // check if there is a bootable removable media could be found in this device path ,\r
- // and get the bootable media handle\r
- //\r
- Handle = BdsLibGetBootableHandle(DevicePath);\r
- if (Handle == NULL) {\r
- goto Done;\r
- }\r
- //\r
- // Load the default boot file \EFI\BOOT\boot{machinename}.EFI from removable Media\r
- // machinename is ia32, ia64, x64, ...\r
- //\r
- FilePath = FileDevicePath (Handle, (CONST CHAR16*)PcdGetPtr(PcdDefaultBootFileName));\r
- if (FilePath != NULL) {\r
- Status = gBS->LoadImage (\r
- TRUE,\r
- mBdsImageHandle,\r
- FilePath,\r
- NULL,\r
- 0,\r
- &ImageHandle\r
- );\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // The DevicePath failed, and it's not a valid\r
- // removable media device.\r
- //\r
- goto Done;\r
- }\r
- }\r
- }\r
-\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // It there is any error from the Boot attempt exit now.\r
- //\r
- goto Done;\r
- }\r
- //\r
- // Provide the image with it's load options\r
- //\r
- Status = gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **) &ImageInfo);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- if (Option->LoadOptionsSize != 0) {\r
- ImageInfo->LoadOptionsSize = Option->LoadOptionsSize;\r
- ImageInfo->LoadOptions = Option->LoadOptions;\r
- }\r
- //\r
- // Before calling the image, enable the Watchdog Timer for\r
- // the 5 Minute period\r
- //\r
- gBS->SetWatchdogTimer (5 * 60, 0x0000, 0x00, NULL);\r
-\r
- Status = gBS->StartImage (ImageHandle, ExitDataSize, ExitData);\r
- DEBUG ((DEBUG_INFO | DEBUG_LOAD, "Image Return Status = %r\n", Status));\r
-\r
- //\r
- // Clear the Watchdog Timer after the image returns\r
- //\r
- gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL);\r
-\r
-Done:\r
- //\r
- // Clear Boot Current\r
- //\r
- gRT->SetVariable (\r
- L"BootCurrent",\r
- &gEfiGlobalVariableGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r
- 0,\r
- &Option->BootCurrent\r
- );\r
-\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Expand a device path that starts with a hard drive media device path node to be a\r
- full device path that includes the full hardware path to the device. We need\r
- to do this so it can be booted. As an optimization the front match (the part point\r
- to the partition node. E.g. ACPI() /PCI()/ATA()/Partition() ) is saved in a variable\r
- so a connect all is not required on every boot. All successful history device path\r
- which point to partition node (the front part) will be saved.\r
-\r
- @param HardDriveDevicePath EFI Device Path to boot, if it starts with a hard\r
- drive media device path.\r
- @return A Pointer to the full device path or NULL if a valid Hard Drive devic path\r
- cannot be found.\r
-\r
-**/\r
-EFI_DEVICE_PATH_PROTOCOL *\r
-EFIAPI\r
-BdsExpandPartitionPartialDevicePathToFull (\r
- IN HARDDRIVE_DEVICE_PATH *HardDriveDevicePath\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN BlockIoHandleCount;\r
- EFI_HANDLE *BlockIoBuffer;\r
- EFI_DEVICE_PATH_PROTOCOL *FullDevicePath;\r
- EFI_DEVICE_PATH_PROTOCOL *BlockIoDevicePath;\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
- UINTN Index;\r
- UINTN InstanceNum;\r
- EFI_DEVICE_PATH_PROTOCOL *CachedDevicePath;\r
- EFI_DEVICE_PATH_PROTOCOL *TempNewDevicePath;\r
- UINTN CachedDevicePathSize;\r
- BOOLEAN DeviceExist;\r
- BOOLEAN NeedAdjust;\r
- EFI_DEVICE_PATH_PROTOCOL *Instance;\r
- UINTN Size;\r
-\r
- FullDevicePath = NULL;\r
- //\r
- // Check if there is prestore 'HDDP' variable.\r
- // If exist, search the front path which point to partition node in the variable instants.\r
- // If fail to find or 'HDDP' not exist, reconnect all and search in all system\r
- //\r
- CachedDevicePath = BdsLibGetVariableAndSize (\r
- L"HDDP",\r
- &mHdBootVariablePrivateGuid,\r
- &CachedDevicePathSize\r
- );\r
- \r
- if (CachedDevicePath != NULL) {\r
- TempNewDevicePath = CachedDevicePath;\r
- DeviceExist = FALSE;\r
- NeedAdjust = FALSE;\r
- do {\r
- //\r
- // Check every instance of the variable\r
- // First, check whether the instance contain the partition node, which is needed for distinguishing multi\r
- // partial partition boot option. Second, check whether the instance could be connected.\r
- //\r
- Instance = GetNextDevicePathInstance (&TempNewDevicePath, &Size);\r
- if (MatchPartitionDevicePathNode (Instance, HardDriveDevicePath)) {\r
- //\r
- // Connect the device path instance, the device path point to hard drive media device path node\r
- // e.g. ACPI() /PCI()/ATA()/Partition()\r
- //\r
- Status = BdsLibConnectDevicePath (Instance);\r
- if (!EFI_ERROR (Status)) {\r
- DeviceExist = TRUE;\r
- break;\r
- }\r
- }\r
- //\r
- // Come here means the first instance is not matched\r
- //\r
- NeedAdjust = TRUE;\r
- FreePool(Instance);\r
- } while (TempNewDevicePath != NULL);\r
-\r
- if (DeviceExist) {\r
- //\r
- // Find the matched device path.\r
- // Append the file path information from the boot option and return the fully expanded device path.\r
- //\r
- DevicePath = NextDevicePathNode ((EFI_DEVICE_PATH_PROTOCOL *) HardDriveDevicePath);\r
- FullDevicePath = AppendDevicePath (Instance, DevicePath);\r
-\r
- //\r
- // Adjust the 'HDDP' instances sequence if the matched one is not first one.\r
- //\r
- if (NeedAdjust) {\r
- //\r
- // First delete the matched instance.\r
- //\r
- TempNewDevicePath = CachedDevicePath;\r
- CachedDevicePath = BdsLibDelPartMatchInstance (CachedDevicePath, Instance );\r
- FreePool (TempNewDevicePath);\r
- \r
- //\r
- // Second, append the remaining path after the matched instance\r
- //\r
- TempNewDevicePath = CachedDevicePath;\r
- CachedDevicePath = AppendDevicePathInstance (Instance, CachedDevicePath );\r
- FreePool (TempNewDevicePath);\r
- //\r
- // Save the matching Device Path so we don't need to do a connect all next time\r
- //\r
- Status = gRT->SetVariable (\r
- L"HDDP",\r
- &mHdBootVariablePrivateGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
- GetDevicePathSize (CachedDevicePath),\r
- CachedDevicePath\r
- );\r
- }\r
- \r
- FreePool (Instance);\r
- FreePool (CachedDevicePath);\r
- return FullDevicePath;\r
- }\r
- }\r
-\r
- //\r
- // If we get here we fail to find or 'HDDP' not exist, and now we need\r
- // to search all devices in the system for a matched partition\r
- //\r
- BdsLibConnectAllDriversToAllControllers ();\r
- Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiBlockIoProtocolGuid, NULL, &BlockIoHandleCount, &BlockIoBuffer);\r
- if (EFI_ERROR (Status) || BlockIoHandleCount == 0 || BlockIoBuffer == NULL) {\r
- //\r
- // If there was an error or there are no device handles that support\r
- // the BLOCK_IO Protocol, then return.\r
- //\r
- return NULL;\r
- }\r
- //\r
- // Loop through all the device handles that support the BLOCK_IO Protocol\r
- //\r
- for (Index = 0; Index < BlockIoHandleCount; Index++) {\r
-\r
- Status = gBS->HandleProtocol (BlockIoBuffer[Index], &gEfiDevicePathProtocolGuid, (VOID *) &BlockIoDevicePath);\r
- if (EFI_ERROR (Status) || BlockIoDevicePath == NULL) {\r
- continue;\r
- }\r
-\r
- if (MatchPartitionDevicePathNode (BlockIoDevicePath, HardDriveDevicePath)) {\r
- //\r
- // Find the matched partition device path\r
- //\r
- DevicePath = NextDevicePathNode ((EFI_DEVICE_PATH_PROTOCOL *) HardDriveDevicePath);\r
- FullDevicePath = AppendDevicePath (BlockIoDevicePath, DevicePath);\r
-\r
- //\r
- // Save the matched partition device path in 'HDDP' variable\r
- //\r
- if (CachedDevicePath != NULL) {\r
- //\r
- // Save the matched partition device path as first instance of 'HDDP' variable\r
- //\r
- if (BdsLibMatchDevicePaths (CachedDevicePath, BlockIoDevicePath)) {\r
- TempNewDevicePath = CachedDevicePath;\r
- CachedDevicePath = BdsLibDelPartMatchInstance (CachedDevicePath, BlockIoDevicePath);\r
- FreePool(TempNewDevicePath);\r
-\r
- TempNewDevicePath = CachedDevicePath;\r
- CachedDevicePath = AppendDevicePathInstance (BlockIoDevicePath, CachedDevicePath);\r
- FreePool(TempNewDevicePath);\r
- } else {\r
- TempNewDevicePath = CachedDevicePath;\r
- CachedDevicePath = AppendDevicePathInstance (BlockIoDevicePath, CachedDevicePath);\r
- FreePool(TempNewDevicePath);\r
- }\r
- //\r
- // Here limit the device path instance number to 12, which is max number for a system support 3 IDE controller\r
- // If the user try to boot many OS in different HDs or partitions, in theory, the 'HDDP' variable maybe become larger and larger.\r
- //\r
- InstanceNum = 0;\r
- ASSERT (CachedDevicePath != NULL);\r
- TempNewDevicePath = CachedDevicePath;\r
- while (!IsDevicePathEnd (TempNewDevicePath)) {\r
- TempNewDevicePath = NextDevicePathNode (TempNewDevicePath);\r
- //\r
- // Parse one instance\r
- //\r
- while (!IsDevicePathEndType (TempNewDevicePath)) {\r
- TempNewDevicePath = NextDevicePathNode (TempNewDevicePath);\r
- }\r
- InstanceNum++;\r
- //\r
- // If the CachedDevicePath variable contain too much instance, only remain 12 instances.\r
- //\r
- if (InstanceNum >= 12) {\r
- SetDevicePathEndNode (TempNewDevicePath);\r
- break;\r
- }\r
- }\r
- } else {\r
- CachedDevicePath = DuplicateDevicePath (BlockIoDevicePath);\r
- }\r
-\r
- //\r
- // Save the matching Device Path so we don't need to do a connect all next time\r
- //\r
- Status = gRT->SetVariable (\r
- L"HDDP",\r
- &mHdBootVariablePrivateGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
- GetDevicePathSize (CachedDevicePath),\r
- CachedDevicePath\r
- );\r
-\r
- break;\r
- }\r
- }\r
- \r
- FreePool (CachedDevicePath);\r
- if (BlockIoBuffer != NULL) {\r
- FreePool (BlockIoBuffer);\r
- }\r
- return FullDevicePath;\r
-}\r
-\r
-/**\r
- Check whether there is a instance in BlockIoDevicePath, which contain multi device path\r
- instances, has the same partition node with HardDriveDevicePath device path\r
-\r
- @param BlockIoDevicePath Multi device path instances which need to check\r
- @param HardDriveDevicePath A device path which starts with a hard drive media\r
- device path.\r
-\r
- @retval TRUE There is a matched device path instance.\r
- @retval FALSE There is no matched device path instance.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-MatchPartitionDevicePathNode (\r
- IN EFI_DEVICE_PATH_PROTOCOL *BlockIoDevicePath,\r
- IN HARDDRIVE_DEVICE_PATH *HardDriveDevicePath\r
- )\r
-{\r
- HARDDRIVE_DEVICE_PATH *TmpHdPath;\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
- BOOLEAN Match;\r
- EFI_DEVICE_PATH_PROTOCOL *BlockIoHdDevicePathNode;\r
-\r
- if ((BlockIoDevicePath == NULL) || (HardDriveDevicePath == NULL)) {\r
- return FALSE;\r
- }\r
- \r
- //\r
- // Make PreviousDevicePath == the device path node before the end node\r
- //\r
- DevicePath = BlockIoDevicePath;\r
- BlockIoHdDevicePathNode = NULL;\r
-\r
- //\r
- // find the partition device path node\r
- //\r
- while (!IsDevicePathEnd (DevicePath)) {\r
- if ((DevicePathType (DevicePath) == MEDIA_DEVICE_PATH) &&\r
- (DevicePathSubType (DevicePath) == MEDIA_HARDDRIVE_DP)\r
- ) {\r
- BlockIoHdDevicePathNode = DevicePath;\r
- break;\r
- }\r
-\r
- DevicePath = NextDevicePathNode (DevicePath);\r
- }\r
-\r
- if (BlockIoHdDevicePathNode == NULL) {\r
- return FALSE;\r
- }\r
- //\r
- // See if the harddrive device path in blockio matches the orig Hard Drive Node\r
- //\r
- TmpHdPath = (HARDDRIVE_DEVICE_PATH *) BlockIoHdDevicePathNode;\r
- Match = FALSE;\r
- \r
- //\r
- // Check for the match\r
- //\r
- if ((TmpHdPath->MBRType == HardDriveDevicePath->MBRType) &&\r
- (TmpHdPath->SignatureType == HardDriveDevicePath->SignatureType)) {\r
- switch (TmpHdPath->SignatureType) {\r
- case SIGNATURE_TYPE_GUID:\r
- Match = CompareGuid ((EFI_GUID *)TmpHdPath->Signature, (EFI_GUID *)HardDriveDevicePath->Signature);\r
- break;\r
- case SIGNATURE_TYPE_MBR:\r
- Match = (BOOLEAN)(*((UINT32 *)(&(TmpHdPath->Signature[0]))) == ReadUnaligned32((UINT32 *)(&(HardDriveDevicePath->Signature[0]))));\r
- break;\r
- default:\r
- Match = FALSE;\r
- break;\r
- }\r
- }\r
-\r
- return Match;\r
-}\r
-\r
-/**\r
- Delete the boot option associated with the handle passed in.\r
-\r
- @param Handle The handle which present the device path to create\r
- boot option\r
-\r
- @retval EFI_SUCCESS Delete the boot option success\r
- @retval EFI_NOT_FOUND If the Device Path is not found in the system\r
- @retval EFI_OUT_OF_RESOURCES Lack of memory resource\r
- @retval Other Error return value from SetVariable()\r
-\r
-**/\r
-EFI_STATUS\r
-BdsLibDeleteOptionFromHandle (\r
- IN EFI_HANDLE Handle\r
- )\r
-{\r
- UINT16 *BootOrder;\r
- UINT8 *BootOptionVar;\r
- UINTN BootOrderSize;\r
- UINTN BootOptionSize;\r
- EFI_STATUS Status;\r
- UINTN Index;\r
- UINT16 BootOption[BOOT_OPTION_MAX_CHAR];\r
- UINTN DevicePathSize;\r
- UINTN OptionDevicePathSize;\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
- EFI_DEVICE_PATH_PROTOCOL *OptionDevicePath;\r
- UINT8 *TempPtr;\r
-\r
- Status = EFI_SUCCESS;\r
- BootOrder = NULL;\r
- BootOrderSize = 0;\r
-\r
- //\r
- // Check "BootOrder" variable, if no, means there is no any boot order.\r
- //\r
- BootOrder = BdsLibGetVariableAndSize (\r
- L"BootOrder",\r
- &gEfiGlobalVariableGuid,\r
- &BootOrderSize\r
- );\r
- if (BootOrder == NULL) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- //\r
- // Convert device handle to device path protocol instance\r
- //\r
- DevicePath = DevicePathFromHandle (Handle);\r
- if (DevicePath == NULL) {\r
- return EFI_NOT_FOUND;\r
- }\r
- DevicePathSize = GetDevicePathSize (DevicePath);\r
-\r
- //\r
- // Loop all boot order variable and find the matching device path\r
- //\r
- Index = 0;\r
- while (Index < BootOrderSize / sizeof (UINT16)) {\r
- UnicodeSPrint (BootOption, sizeof (BootOption), L"Boot%04x", BootOrder[Index]);\r
- BootOptionVar = BdsLibGetVariableAndSize (\r
- BootOption,\r
- &gEfiGlobalVariableGuid,\r
- &BootOptionSize\r
- );\r
- \r
- if (BootOptionVar == NULL) {\r
- FreePool (BootOrder);\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- TempPtr = BootOptionVar;\r
- TempPtr += sizeof (UINT32) + sizeof (UINT16);\r
- TempPtr += StrSize ((CHAR16 *) TempPtr);\r
- OptionDevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr;\r
- OptionDevicePathSize = GetDevicePathSize (OptionDevicePath);\r
-\r
- //\r
- // Check whether the device path match\r
- //\r
- if ((OptionDevicePathSize == DevicePathSize) &&\r
- (CompareMem (DevicePath, OptionDevicePath, DevicePathSize) == 0)) {\r
- BdsDeleteBootOption (BootOrder[Index], BootOrder, &BootOrderSize);\r
- FreePool (BootOptionVar);\r
- break;\r
- }\r
-\r
- FreePool (BootOptionVar);\r
- Index++;\r
- }\r
-\r
- //\r
- // Adjust number of boot option for "BootOrder" variable.\r
- //\r
- Status = gRT->SetVariable (\r
- L"BootOrder",\r
- &gEfiGlobalVariableGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
- BootOrderSize,\r
- BootOrder\r
- );\r
-\r
- FreePool (BootOrder);\r
-\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Delete all invalid EFI boot options. The probable invalid boot option could\r
- be Removable media or Network boot device.\r
-\r
- @retval EFI_SUCCESS Delete all invalid boot option success\r
- @retval EFI_NOT_FOUND Variable "BootOrder" is not found\r
- @retval EFI_OUT_OF_RESOURCES Lack of memory resource\r
- @retval Other Error return value from SetVariable()\r
-\r
-**/\r
-EFI_STATUS\r
-BdsDeleteAllInvalidEfiBootOption (\r
- VOID\r
- )\r
-{\r
- UINT16 *BootOrder;\r
- UINT8 *BootOptionVar;\r
- UINTN BootOrderSize;\r
- UINTN BootOptionSize;\r
- EFI_STATUS Status;\r
- UINTN Index;\r
- UINTN Index2;\r
- UINT16 BootOption[BOOT_OPTION_MAX_CHAR];\r
- EFI_DEVICE_PATH_PROTOCOL *OptionDevicePath;\r
- UINT8 *TempPtr;\r
-\r
- Status = EFI_SUCCESS;\r
- BootOrder = NULL;\r
- BootOrderSize = 0;\r
-\r
- //\r
- // Check "BootOrder" variable firstly, this variable hold the number of boot options\r
- //\r
- BootOrder = BdsLibGetVariableAndSize (\r
- L"BootOrder",\r
- &gEfiGlobalVariableGuid,\r
- &BootOrderSize\r
- );\r
- if (NULL == BootOrder) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- Index = 0;\r
- while (Index < BootOrderSize / sizeof (UINT16)) {\r
- UnicodeSPrint (BootOption, sizeof (BootOption), L"Boot%04x", BootOrder[Index]);\r
- BootOptionVar = BdsLibGetVariableAndSize (\r
- BootOption,\r
- &gEfiGlobalVariableGuid,\r
- &BootOptionSize\r
- );\r
- if (NULL == BootOptionVar) {\r
- FreePool (BootOrder);\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- TempPtr = BootOptionVar;\r
- TempPtr += sizeof (UINT32) + sizeof (UINT16);\r
- TempPtr += StrSize ((CHAR16 *) TempPtr);\r
- OptionDevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr;\r
-\r
- //\r
- // Skip legacy boot option (BBS boot device)\r
- //\r
- if ((DevicePathType (OptionDevicePath) == BBS_DEVICE_PATH) &&\r
- (DevicePathSubType (OptionDevicePath) == BBS_BBS_DP)) {\r
- FreePool (BootOptionVar);\r
- Index++;\r
- continue;\r
- }\r
-\r
- if (!BdsLibIsValidEFIBootOptDevicePath (OptionDevicePath, FALSE)) {\r
- //\r
- // Delete this invalid boot option "Boot####"\r
- //\r
- Status = gRT->SetVariable (\r
- BootOption,\r
- &gEfiGlobalVariableGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
- 0,\r
- NULL\r
- );\r
- //\r
- // Mark this boot option in boot order as deleted\r
- //\r
- BootOrder[Index] = 0xffff;\r
- }\r
-\r
- FreePool (BootOptionVar);\r
- Index++;\r
- }\r
-\r
- //\r
- // Adjust boot order array\r
- //\r
- Index2 = 0;\r
- for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r
- if (BootOrder[Index] != 0xffff) {\r
- BootOrder[Index2] = BootOrder[Index];\r
- Index2 ++;\r
- }\r
- }\r
- Status = gRT->SetVariable (\r
- L"BootOrder",\r
- &gEfiGlobalVariableGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
- Index2 * sizeof (UINT16),\r
- BootOrder\r
- );\r
-\r
- FreePool (BootOrder);\r
-\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- This function will enumerate all possible boot device in the system,\r
- it will only execute once of every boot.\r
-\r
- @param BdsBootOptionList The header of the link list which indexed all\r
- current boot options\r
-\r
- @retval EFI_SUCCESS Finished all the boot device enumerate and create\r
- the boot option base on that boot device\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-BdsLibEnumerateAllBootOption (\r
- IN OUT LIST_ENTRY *BdsBootOptionList\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINT16 FloppyNumber;\r
- UINT16 CdromNumber;\r
- UINT16 UsbNumber;\r
- UINT16 MiscNumber;\r
- UINT16 NonBlockNumber;\r
- UINTN NumberBlockIoHandles;\r
- EFI_HANDLE *BlockIoHandles;\r
- EFI_BLOCK_IO_PROTOCOL *BlkIo;\r
- UINTN Index;\r
- UINTN NumberSimpleNetworkHandles;\r
- EFI_HANDLE *SimpleNetworkHandles;\r
- UINTN FvHandleCount;\r
- EFI_HANDLE *FvHandleBuffer;\r
- EFI_FV_FILETYPE Type;\r
- UINTN Size;\r
- EFI_FV_FILE_ATTRIBUTES Attributes;\r
- UINT32 AuthenticationStatus;\r
- EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
- UINTN DevicePathType;\r
- CHAR16 Buffer[40];\r
- EFI_HANDLE *FileSystemHandles;\r
- UINTN NumberFileSystemHandles;\r
- BOOLEAN NeedDelete;\r
- EFI_IMAGE_DOS_HEADER DosHeader;\r
- EFI_IMAGE_OPTIONAL_HEADER_UNION HdrData;\r
- EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r
-\r
- FloppyNumber = 0;\r
- CdromNumber = 0;\r
- UsbNumber = 0;\r
- MiscNumber = 0;\r
- ZeroMem (Buffer, sizeof (Buffer));\r
- \r
- //\r
- // If the boot device enumerate happened, just get the boot\r
- // device from the boot order variable\r
- //\r
- if (mEnumBootDevice) {\r
- BdsLibBuildOptionFromVar (BdsBootOptionList, L"BootOrder");\r
- return EFI_SUCCESS;\r
- }\r
- \r
- //\r
- // Notes: this dirty code is to get the legacy boot option from the\r
- // BBS table and create to variable as the EFI boot option, it should\r
- // be removed after the CSM can provide legacy boot option directly\r
- //\r
- REFRESH_LEGACY_BOOT_OPTIONS;\r
-\r
- //\r
- // Delete invalid boot option\r
- //\r
- BdsDeleteAllInvalidEfiBootOption ();\r
- \r
- //\r
- // Parse removable media\r
- //\r
- gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiBlockIoProtocolGuid,\r
- NULL,\r
- &NumberBlockIoHandles,\r
- &BlockIoHandles\r
- );\r
- \r
- for (Index = 0; Index < NumberBlockIoHandles; Index++) {\r
- Status = gBS->HandleProtocol (\r
- BlockIoHandles[Index],\r
- &gEfiBlockIoProtocolGuid,\r
- (VOID **) &BlkIo\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- if (!BlkIo->Media->RemovableMedia) {\r
- //\r
- // skip the non-removable block devices\r
- //\r
- continue;\r
- }\r
- }\r
- DevicePath = DevicePathFromHandle (BlockIoHandles[Index]);\r
- DevicePathType = BdsGetBootTypeFromDevicePath (DevicePath);\r
-\r
- switch (DevicePathType) {\r
- case BDS_EFI_ACPI_FLOPPY_BOOT:\r
- if (FloppyNumber == 0) {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI Floppy");\r
- } else {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI Floppy %d", FloppyNumber);\r
- }\r
- BdsLibBuildOptionFromHandle (BlockIoHandles[Index], BdsBootOptionList, Buffer);\r
- FloppyNumber++;\r
- break;\r
-\r
- case BDS_EFI_MESSAGE_ATAPI_BOOT:\r
- if (CdromNumber == 0) {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI DVD/CDROM");\r
- } else {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI DVD/CDROM %d", CdromNumber);\r
- }\r
- BdsLibBuildOptionFromHandle (BlockIoHandles[Index], BdsBootOptionList, Buffer);\r
- CdromNumber++;\r
- break;\r
-\r
- case BDS_EFI_MESSAGE_USB_DEVICE_BOOT:\r
- if (UsbNumber == 0) {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI USB Device");\r
- } else {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI USB Device %d", UsbNumber);\r
- }\r
- BdsLibBuildOptionFromHandle (BlockIoHandles[Index], BdsBootOptionList, Buffer);\r
- UsbNumber++;\r
- break;\r
-\r
- case BDS_EFI_MESSAGE_SCSI_BOOT:\r
- if (UsbNumber == 0) {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI SCSI Device");\r
- } else {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI SCSI Device %d", UsbNumber);\r
- }\r
- BdsLibBuildOptionFromHandle (BlockIoHandles[Index], BdsBootOptionList, Buffer);\r
- UsbNumber++;\r
- break;\r
-\r
- case BDS_EFI_MESSAGE_MISC_BOOT:\r
- if (MiscNumber == 0) {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI Misc Device");\r
- } else {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI Misc Device %d", MiscNumber);\r
- }\r
- BdsLibBuildOptionFromHandle (BlockIoHandles[Index], BdsBootOptionList, Buffer);\r
- MiscNumber++;\r
- break;\r
-\r
- default:\r
- break;\r
- }\r
- }\r
-\r
- if (NumberBlockIoHandles != 0) {\r
- FreePool (BlockIoHandles);\r
- }\r
-\r
- //\r
- // If there is simple file protocol which does not consume block Io protocol, create a boot option for it here.\r
- //\r
- NonBlockNumber = 0;\r
- gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiSimpleFileSystemProtocolGuid,\r
- NULL,\r
- &NumberFileSystemHandles,\r
- &FileSystemHandles\r
- );\r
- for (Index = 0; Index < NumberFileSystemHandles; Index++) {\r
- Status = gBS->HandleProtocol (\r
- FileSystemHandles[Index],\r
- &gEfiBlockIoProtocolGuid,\r
- (VOID **) &BlkIo\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Skip if the file system handle supports a BlkIo protocol,\r
- //\r
- continue;\r
- }\r
-\r
- //\r
- // Do the removable Media thing. \EFI\BOOT\boot{machinename}.EFI\r
- // machinename is ia32, ia64, x64, ...\r
- //\r
- Hdr.Union = &HdrData;\r
- NeedDelete = TRUE;\r
- Status = BdsLibGetImageHeader (\r
- FileSystemHandles[Index],\r
- (CHAR16*)PcdGetPtr (PcdDefaultBootFileName),\r
- &DosHeader,\r
- Hdr\r
- );\r
- if (!EFI_ERROR (Status) &&\r
- EFI_IMAGE_MACHINE_TYPE_SUPPORTED (Hdr.Pe32->FileHeader.Machine) &&\r
- Hdr.Pe32->OptionalHeader.Subsystem == EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION) {\r
- NeedDelete = FALSE;\r
- }\r
-\r
- if (NeedDelete) {\r
- //\r
- // No such file or the file is not a EFI application, delete this boot option\r
- //\r
- BdsLibDeleteOptionFromHandle (FileSystemHandles[Index]);\r
- } else {\r
- if (NonBlockNumber == 0) {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI Non-Block Boot Device");\r
- } else {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI Non-Block Boot Device %d", NonBlockNumber);\r
- }\r
- BdsLibBuildOptionFromHandle (FileSystemHandles[Index], BdsBootOptionList, Buffer);\r
- NonBlockNumber++;\r
- }\r
- }\r
-\r
- if (NumberFileSystemHandles != 0) {\r
- FreePool (FileSystemHandles);\r
- }\r
-\r
- //\r
- // Parse Network Boot Device\r
- //\r
- gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiSimpleNetworkProtocolGuid,\r
- NULL,\r
- &NumberSimpleNetworkHandles,\r
- &SimpleNetworkHandles\r
- );\r
- for (Index = 0; Index < NumberSimpleNetworkHandles; Index++) {\r
- if (Index == 0) {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI Network");\r
- } else {\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"EFI Network %d", Index);\r
- }\r
- BdsLibBuildOptionFromHandle (SimpleNetworkHandles[Index], BdsBootOptionList, Buffer);\r
- }\r
-\r
- if (NumberSimpleNetworkHandles != 0) {\r
- FreePool (SimpleNetworkHandles);\r
- }\r
-\r
- //\r
- // Check if we have on flash shell\r
- //\r
- gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiFirmwareVolume2ProtocolGuid,\r
- NULL,\r
- &FvHandleCount,\r
- &FvHandleBuffer\r
- );\r
- for (Index = 0; Index < FvHandleCount; Index++) {\r
- //\r
- // Only care the dispatched FV. If no dispatch protocol on the FV, it is not dispatched, then skip it.\r
- //\r
- Status = gBS->HandleProtocol (\r
- FvHandleBuffer[Index],\r
- &gEfiFirmwareVolumeDispatchProtocolGuid,\r
- (VOID **) &Fv\r
- );\r
- if (EFI_ERROR (Status)) {\r
- continue;\r
- }\r
- \r
- gBS->HandleProtocol (\r
- FvHandleBuffer[Index],\r
- &gEfiFirmwareVolume2ProtocolGuid,\r
- (VOID **) &Fv\r
- );\r
-\r
- Status = Fv->ReadFile (\r
- Fv,\r
- &gEfiShellFileGuid,\r
- NULL,\r
- &Size,\r
- &Type,\r
- &Attributes,\r
- &AuthenticationStatus\r
- );\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // Skip if no shell file in the FV\r
- //\r
- continue;\r
- }\r
- //\r
- // Build the shell boot option\r
- //\r
- BdsLibBuildOptionFromShell (FvHandleBuffer[Index], BdsBootOptionList);\r
- }\r
-\r
- if (FvHandleCount != 0) {\r
- FreePool (FvHandleBuffer);\r
- }\r
- //\r
- // Make sure every boot only have one time\r
- // boot device enumerate\r
- //\r
- BdsLibBuildOptionFromVar (BdsBootOptionList, L"BootOrder");\r
- mEnumBootDevice = TRUE;\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Build the boot option with the handle parsed in\r
-\r
- @param Handle The handle which present the device path to create\r
- boot option\r
- @param BdsBootOptionList The header of the link list which indexed all\r
- current boot options\r
- @param String The description of the boot option.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-BdsLibBuildOptionFromHandle (\r
- IN EFI_HANDLE Handle,\r
- IN LIST_ENTRY *BdsBootOptionList,\r
- IN CHAR16 *String\r
- )\r
-{\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
-\r
- DevicePath = DevicePathFromHandle (Handle);\r
-\r
- //\r
- // Create and register new boot option\r
- //\r
- BdsLibRegisterNewOption (BdsBootOptionList, DevicePath, String, L"BootOrder");\r
-}\r
-\r
-\r
-/**\r
- Build the on flash shell boot option with the handle parsed in.\r
-\r
- @param Handle The handle which present the device path to create\r
- on flash shell boot option\r
- @param BdsBootOptionList The header of the link list which indexed all\r
- current boot options\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-BdsLibBuildOptionFromShell (\r
- IN EFI_HANDLE Handle,\r
- IN OUT LIST_ENTRY *BdsBootOptionList\r
- )\r
-{\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
- MEDIA_FW_VOL_FILEPATH_DEVICE_PATH ShellNode;\r
-\r
- DevicePath = DevicePathFromHandle (Handle);\r
-\r
- //\r
- // Build the shell device path\r
- //\r
- EfiInitializeFwVolDevicepathNode (&ShellNode, &gEfiShellFileGuid);\r
-\r
- DevicePath = AppendDevicePathNode (DevicePath, (EFI_DEVICE_PATH_PROTOCOL *) &ShellNode);\r
-\r
- //\r
- // Create and register the shell boot option\r
- //\r
- BdsLibRegisterNewOption (BdsBootOptionList, DevicePath, L"EFI Internal Shell", L"BootOrder");\r
-\r
-}\r
-\r
-/**\r
- Boot from the UEFI spec defined "BootNext" variable.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-BdsLibBootNext (\r
- VOID\r
- )\r
-{\r
- UINT16 *BootNext;\r
- UINTN BootNextSize;\r
- CHAR16 Buffer[20];\r
- BDS_COMMON_OPTION *BootOption;\r
- LIST_ENTRY TempList;\r
- UINTN ExitDataSize;\r
- CHAR16 *ExitData;\r
-\r
- //\r
- // Init the boot option name buffer and temp link list\r
- //\r
- InitializeListHead (&TempList);\r
- ZeroMem (Buffer, sizeof (Buffer));\r
-\r
- BootNext = BdsLibGetVariableAndSize (\r
- L"BootNext",\r
- &gEfiGlobalVariableGuid,\r
- &BootNextSize\r
- );\r
-\r
- //\r
- // Clear the boot next variable first\r
- //\r
- if (BootNext != NULL) {\r
- gRT->SetVariable (\r
- L"BootNext",\r
- &gEfiGlobalVariableGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
- 0,\r
- BootNext\r
- );\r
-\r
- //\r
- // Start to build the boot option and try to boot\r
- //\r
- UnicodeSPrint (Buffer, sizeof (Buffer), L"Boot%04x", *BootNext);\r
- BootOption = BdsLibVariableToOption (&TempList, Buffer);\r
- ASSERT (BootOption != NULL);\r
- BdsLibConnectDevicePath (BootOption->DevicePath);\r
- BdsLibBootViaBootOption (BootOption, BootOption->DevicePath, &ExitDataSize, &ExitData);\r
- }\r
-\r
-}\r
-\r
-/**\r
- Return the bootable media handle.\r
- First, check the device is connected\r
- Second, check whether the device path point to a device which support SimpleFileSystemProtocol,\r
- Third, detect the the default boot file in the Media, and return the removable Media handle.\r
-\r
- @param DevicePath Device Path to a bootable device\r
-\r
- @retval NULL The media on the DevicePath is not bootable\r
-\r
-**/\r
-EFI_HANDLE\r
-EFIAPI\r
-BdsLibGetBootableHandle (\r
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_DEVICE_PATH_PROTOCOL *UpdatedDevicePath;\r
- EFI_DEVICE_PATH_PROTOCOL *DupDevicePath;\r
- EFI_HANDLE Handle;\r
- EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
- VOID *Buffer;\r
- EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r
- UINTN Size;\r
- UINTN TempSize;\r
- EFI_HANDLE ReturnHandle;\r
- EFI_HANDLE *SimpleFileSystemHandles;\r
-\r
- UINTN NumberSimpleFileSystemHandles;\r
- UINTN Index;\r
- EFI_IMAGE_DOS_HEADER DosHeader;\r
- EFI_IMAGE_OPTIONAL_HEADER_UNION HdrData;\r
- EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r
-\r
- UpdatedDevicePath = DevicePath;\r
- \r
- //\r
- // Check whether the device is connected\r
- //\r
- Status = gBS->LocateDevicePath (&gEfiBlockIoProtocolGuid, &UpdatedDevicePath, &Handle);\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // Skip the case that the boot option point to a simple file protocol which does not consume block Io protocol,\r
- //\r
- Status = gBS->LocateDevicePath (&gEfiSimpleFileSystemProtocolGuid, &UpdatedDevicePath, &Handle);\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // Fail to find the proper BlockIo and simple file protocol, maybe because device not present, we need to connect it firstly\r
- //\r
- UpdatedDevicePath = DevicePath;\r
- Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &UpdatedDevicePath, &Handle);\r
- gBS->ConnectController (Handle, NULL, NULL, TRUE);\r
- }\r
- } else {\r
- //\r
- // Get BlockIo protocol and check removable attribute\r
- //\r
- Status = gBS->HandleProtocol (Handle, &gEfiBlockIoProtocolGuid, (VOID **)&BlockIo);\r
- //\r
- // Issue a dummy read to the device to check for media change.\r
- // When the removable media is changed, any Block IO read/write will\r
- // cause the BlockIo protocol be reinstalled and EFI_MEDIA_CHANGED is\r
- // returned. After the Block IO protocol is reinstalled, subsequent\r
- // Block IO read/write will success.\r
- //\r
- Buffer = AllocatePool (BlockIo->Media->BlockSize);\r
- if (Buffer != NULL) {\r
- BlockIo->ReadBlocks (\r
- BlockIo,\r
- BlockIo->Media->MediaId,\r
- 0,\r
- BlockIo->Media->BlockSize,\r
- Buffer\r
- );\r
- FreePool(Buffer);\r
- }\r
- }\r
-\r
- //\r
- // Detect the the default boot file from removable Media\r
- //\r
-\r
- //\r
- // If fail to get bootable handle specified by a USB boot option, the BDS should try to find other bootable device in the same USB bus\r
- // Try to locate the USB node device path first, if fail then use its previous PCI node to search\r
- //\r
- DupDevicePath = DuplicateDevicePath (DevicePath);\r
- ASSERT (DupDevicePath != NULL);\r
- \r
- UpdatedDevicePath = DupDevicePath;\r
- Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &UpdatedDevicePath, &Handle);\r
- //\r
- // if the resulting device path point to a usb node, and the usb node is a dummy node, should only let device path only point to the previous Pci node\r
- // Acpi()/Pci()/Usb() --> Acpi()/Pci()\r
- //\r
- if ((DevicePathType (UpdatedDevicePath) == MESSAGING_DEVICE_PATH) &&\r
- (DevicePathSubType (UpdatedDevicePath) == MSG_USB_DP)) {\r
- //\r
- // Remove the usb node, let the device path only point to PCI node\r
- //\r
- SetDevicePathEndNode (UpdatedDevicePath);\r
- UpdatedDevicePath = DupDevicePath;\r
- } else {\r
- UpdatedDevicePath = DevicePath;\r
- }\r
-\r
- //\r
- // Get the device path size of boot option\r
- //\r
- Size = GetDevicePathSize(UpdatedDevicePath) - sizeof (EFI_DEVICE_PATH_PROTOCOL); // minus the end node\r
- ReturnHandle = NULL;\r
- gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiSimpleFileSystemProtocolGuid,\r
- NULL,\r
- &NumberSimpleFileSystemHandles,\r
- &SimpleFileSystemHandles\r
- );\r
- for (Index = 0; Index < NumberSimpleFileSystemHandles; Index++) {\r
- //\r
- // Get the device path size of SimpleFileSystem handle\r
- //\r
- TempDevicePath = DevicePathFromHandle (SimpleFileSystemHandles[Index]);\r
- TempSize = GetDevicePathSize (TempDevicePath)- sizeof (EFI_DEVICE_PATH_PROTOCOL); // minus the end node\r
- //\r
- // Check whether the device path of boot option is part of the SimpleFileSystem handle's device path\r
- //\r
- if (Size <= TempSize && CompareMem (TempDevicePath, UpdatedDevicePath, Size)==0) {\r
- //\r
- // Load the default boot file \EFI\BOOT\boot{machinename}.EFI from removable Media\r
- // machinename is ia32, ia64, x64, ...\r
- //\r
- Hdr.Union = &HdrData;\r
- Status = BdsLibGetImageHeader (\r
- SimpleFileSystemHandles[Index],\r
- (CHAR16*)PcdGetPtr(PcdDefaultBootFileName),\r
- &DosHeader,\r
- Hdr\r
- );\r
- if (!EFI_ERROR (Status) &&\r
- EFI_IMAGE_MACHINE_TYPE_SUPPORTED (Hdr.Pe32->FileHeader.Machine) &&\r
- Hdr.Pe32->OptionalHeader.Subsystem == EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION) {\r
- ReturnHandle = SimpleFileSystemHandles[Index];\r
- break;\r
- }\r
- }\r
- }\r
-\r
- FreePool(DupDevicePath);\r
-\r
- if (SimpleFileSystemHandles != NULL) {\r
- FreePool(SimpleFileSystemHandles);\r
- }\r
-\r
- return ReturnHandle;\r
-}\r
-\r
-/**\r
- Check to see if the network cable is plugged in. If the DevicePath is not\r
- connected it will be connected.\r
-\r
- @param DevicePath Device Path to check\r
-\r
- @retval TRUE DevicePath points to an Network that is connected\r
- @retval FALSE DevicePath does not point to a bootable network\r
-\r
-**/\r
-BOOLEAN\r
-BdsLibNetworkBootWithMediaPresent (\r
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_DEVICE_PATH_PROTOCOL *UpdatedDevicePath;\r
- EFI_HANDLE Handle;\r
- EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r
- BOOLEAN MediaPresent;\r
-\r
- MediaPresent = FALSE;\r
-\r
- UpdatedDevicePath = DevicePath;\r
- Status = gBS->LocateDevicePath (&gEfiSimpleNetworkProtocolGuid, &UpdatedDevicePath, &Handle);\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // Device not present so see if we need to connect it\r
- //\r
- Status = BdsLibConnectDevicePath (DevicePath);\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // This one should work after we did the connect\r
- //\r
- Status = gBS->LocateDevicePath (&gEfiSimpleNetworkProtocolGuid, &UpdatedDevicePath, &Handle);\r
- }\r
- }\r
-\r
- if (!EFI_ERROR (Status)) {\r
- Status = gBS->HandleProtocol (Handle, &gEfiSimpleNetworkProtocolGuid, (VOID **)&Snp);\r
- if (!EFI_ERROR (Status)) {\r
- if (Snp->Mode->MediaPresentSupported) {\r
- if (Snp->Mode->State == EfiSimpleNetworkInitialized) {\r
- //\r
- // In case some one else is using the SNP check to see if it's connected\r
- //\r
- MediaPresent = Snp->Mode->MediaPresent;\r
- } else {\r
- //\r
- // No one is using SNP so we need to Start and Initialize so\r
- // MediaPresent will be valid.\r
- //\r
- Status = Snp->Start (Snp);\r
- if (!EFI_ERROR (Status)) {\r
- Status = Snp->Initialize (Snp, 0, 0);\r
- if (!EFI_ERROR (Status)) {\r
- MediaPresent = Snp->Mode->MediaPresent;\r
- Snp->Shutdown (Snp);\r
- }\r
- Snp->Stop (Snp);\r
- }\r
- }\r
- } else {\r
- MediaPresent = TRUE;\r
- }\r
- }\r
- }\r
-\r
- return MediaPresent;\r
-}\r
-\r
-/**\r
- For a bootable Device path, return its boot type.\r
-\r
- @param DevicePath The bootable device Path to check\r
-\r
- @retval BDS_EFI_MEDIA_HD_BOOT If the device path contains any media device path node, it is media boot type\r
- For the floppy node, handle it as media node\r
- @retval BDS_EFI_MEDIA_CDROM_BOOT If the device path contains any media device path node, it is media boot type\r
- For the floppy node, handle it as media node\r
- @retval BDS_EFI_ACPI_FLOPPY_BOOT If the device path contains any media device path node, it is media boot type\r
- For the floppy node, handle it as media node\r
- @retval BDS_EFI_MESSAGE_ATAPI_BOOT If the device path not contains any media device path node, and\r
- its last device path node point to a message device path node, it is\r
- \r
- @retval BDS_EFI_MESSAGE_SCSI_BOOT If the device path not contains any media device path node, and\r
- its last device path node point to a message device path node, it is\r
- @retval BDS_EFI_MESSAGE_USB_DEVICE_BOOT If the device path not contains any media device path node, and\r
- its last device path node point to a message device path node, it is\r
- @retval BDS_EFI_MESSAGE_MISC_BOOT If the device path not contains any media device path node, and\r
- its last device path node point to a message device path node, it is\r
- @retval BDS_LEGACY_BBS_BOOT Legacy boot type\r
- @retval BDS_EFI_UNSUPPORT An EFI Removable BlockIO device path not point to a media and message device, \r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-BdsGetBootTypeFromDevicePath (\r
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
- )\r
-{\r
- ACPI_HID_DEVICE_PATH *Acpi;\r
- EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r
- EFI_DEVICE_PATH_PROTOCOL *LastDeviceNode;\r
-\r
-\r
- if (NULL == DevicePath) {\r
- return BDS_EFI_UNSUPPORT;\r
- }\r
-\r
- TempDevicePath = DevicePath;\r
-\r
- while (!IsDevicePathEndType (TempDevicePath)) {\r
- switch (DevicePathType (TempDevicePath)) {\r
- case BBS_DEVICE_PATH:\r
- return BDS_LEGACY_BBS_BOOT;\r
- case MEDIA_DEVICE_PATH:\r
- if (DevicePathSubType (TempDevicePath) == MEDIA_HARDDRIVE_DP) {\r
- return BDS_EFI_MEDIA_HD_BOOT;\r
- } else if (DevicePathSubType (TempDevicePath) == MEDIA_CDROM_DP) {\r
- return BDS_EFI_MEDIA_CDROM_BOOT;\r
- }\r
- break;\r
- case ACPI_DEVICE_PATH:\r
- Acpi = (ACPI_HID_DEVICE_PATH *) TempDevicePath;\r
- if (EISA_ID_TO_NUM (Acpi->HID) == 0x0604) {\r
- return BDS_EFI_ACPI_FLOPPY_BOOT;\r
- }\r
- break;\r
- case MESSAGING_DEVICE_PATH:\r
- //\r
- // Get the last device path node\r
- //\r
- LastDeviceNode = NextDevicePathNode (TempDevicePath);\r
- if (DevicePathSubType(LastDeviceNode) == MSG_DEVICE_LOGICAL_UNIT_DP) {\r
- //\r
- // if the next node type is Device Logical Unit, which specify the Logical Unit Number (LUN),\r
- // skit it\r
- //\r
- LastDeviceNode = NextDevicePathNode (LastDeviceNode);\r
- }\r
- //\r
- // if the device path not only point to driver device, it is not a messaging device path,\r
- //\r
- if (!IsDevicePathEndType (LastDeviceNode)) {\r
- break; \r
- }\r
-\r
- if (DevicePathSubType(TempDevicePath) == MSG_ATAPI_DP) {\r
- return BDS_EFI_MESSAGE_ATAPI_BOOT;\r
- } else if (DevicePathSubType(TempDevicePath) == MSG_USB_DP) {\r
- return BDS_EFI_MESSAGE_USB_DEVICE_BOOT;\r
- } else if (DevicePathSubType(TempDevicePath) == MSG_SCSI_DP) {\r
- return BDS_EFI_MESSAGE_SCSI_BOOT;\r
- }\r
- return BDS_EFI_MESSAGE_MISC_BOOT;\r
- default:\r
- break;\r
- }\r
- TempDevicePath = NextDevicePathNode (TempDevicePath);\r
- }\r
-\r
- return BDS_EFI_UNSUPPORT;\r
-}\r
-\r
-/**\r
- Check whether the Device path in a boot option point to a valid bootable device,\r
- And if CheckMedia is true, check the device is ready to boot now.\r
-\r
- @param DevPath the Device path in a boot option\r
- @param CheckMedia if true, check the device is ready to boot now.\r
-\r
- @retval TRUE the Device path is valid\r
- @retval FALSE the Device path is invalid .\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-BdsLibIsValidEFIBootOptDevicePath (\r
- IN EFI_DEVICE_PATH_PROTOCOL *DevPath,\r
- IN BOOLEAN CheckMedia\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_HANDLE Handle;\r
- EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r
- EFI_DEVICE_PATH_PROTOCOL *LastDeviceNode;\r
- EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
-\r
- TempDevicePath = DevPath;\r
- LastDeviceNode = DevPath;\r
- \r
- //\r
- // Check if it's a valid boot option for network boot device\r
- // Only check if there is SimpleNetworkProtocol installed. If yes, that means\r
- // there is the network card there.\r
- //\r
- Status = gBS->LocateDevicePath (\r
- &gEfiSimpleNetworkProtocolGuid,\r
- &TempDevicePath,\r
- &Handle\r
- );\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // Device not present so see if we need to connect it\r
- //\r
- TempDevicePath = DevPath;\r
- BdsLibConnectDevicePath (TempDevicePath);\r
- Status = gBS->LocateDevicePath (\r
- &gEfiSimpleNetworkProtocolGuid,\r
- &TempDevicePath,\r
- &Handle\r
- );\r
- }\r
- \r
- if (!EFI_ERROR (Status)) {\r
- if (CheckMedia) {\r
- //\r
- // Test if it is ready to boot now\r
- //\r
- if (BdsLibNetworkBootWithMediaPresent(DevPath)) {\r
- return TRUE;\r
- }\r
- } else {\r
- return TRUE;\r
- }\r
- }\r
-\r
- //\r
- // If the boot option point to a file, it is a valid EFI boot option,\r
- // and assume it is ready to boot now\r
- //\r
- while (!IsDevicePathEnd (TempDevicePath)) {\r
- LastDeviceNode = TempDevicePath;\r
- TempDevicePath = NextDevicePathNode (TempDevicePath);\r
- }\r
- if ((DevicePathType (LastDeviceNode) == MEDIA_DEVICE_PATH) &&\r
- (DevicePathSubType (LastDeviceNode) == MEDIA_FILEPATH_DP)) {\r
- return TRUE;\r
- }\r
-\r
- //\r
- // Check if it's a valid boot option for internal Shell\r
- //\r
- if (EfiGetNameGuidFromFwVolDevicePathNode ((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) LastDeviceNode) != NULL) {\r
- //\r
- // If the boot option point to Internal FV shell, make sure it is valid\r
- //\r
- TempDevicePath = DevPath; \r
- Status = BdsLibUpdateFvFileDevicePath (&TempDevicePath, &gEfiShellFileGuid);\r
- if (Status == EFI_ALREADY_STARTED) {\r
- return TRUE;\r
- } else {\r
- if (Status == EFI_SUCCESS) {\r
- FreePool (TempDevicePath); \r
- }\r
- return FALSE;\r
- }\r
- }\r
- \r
- //\r
- // If the boot option point to a blockIO device, no matter whether or not it is a removeable device, it is a valid EFI boot option\r
- //\r
- TempDevicePath = DevPath;\r
- Status = gBS->LocateDevicePath (&gEfiBlockIoProtocolGuid, &TempDevicePath, &Handle);\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // Device not present so see if we need to connect it\r
- //\r
- Status = BdsLibConnectDevicePath (DevPath);\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Try again to get the Block Io protocol after we did the connect\r
- //\r
- TempDevicePath = DevPath;\r
- Status = gBS->LocateDevicePath (&gEfiBlockIoProtocolGuid, &TempDevicePath, &Handle);\r
- }\r
- }\r
- \r
- if (!EFI_ERROR (Status)) {\r
- Status = gBS->HandleProtocol (Handle, &gEfiBlockIoProtocolGuid, (VOID **)&BlockIo);\r
- if (!EFI_ERROR (Status)) {\r
- if (CheckMedia) {\r
- //\r
- // Test if it is ready to boot now\r
- //\r
- if (BdsLibGetBootableHandle (DevPath) != NULL) {\r
- return TRUE;\r
- }\r
- } else {\r
- return TRUE;\r
- }\r
- }\r
- } else {\r
- //\r
- // if the boot option point to a simple file protocol which does not consume block Io protocol, it is also a valid EFI boot option,\r
- //\r
- Status = gBS->LocateDevicePath (&gEfiSimpleFileSystemProtocolGuid, &TempDevicePath, &Handle);\r
- if (!EFI_ERROR (Status)) {\r
- if (CheckMedia) {\r
- //\r
- // Test if it is ready to boot now\r
- //\r
- if (BdsLibGetBootableHandle (DevPath) != NULL) {\r
- return TRUE;\r
- }\r
- } else {\r
- return TRUE;\r
- }\r
- }\r
- }\r
-\r
- return FALSE;\r
-}\r
-\r
-\r
-/**\r
- According to a file guild, check a Fv file device path is valid. If it is invalid,\r
- try to return the valid device path.\r
- FV address maybe changes for memory layout adjust from time to time, use this function\r
- could promise the Fv file device path is right.\r
-\r
- @param DevicePath on input, the Fv file device path need to check on\r
- output, the updated valid Fv file device path\r
- @param FileGuid the Fv file guild\r
-\r
- @retval EFI_INVALID_PARAMETER the input DevicePath or FileGuid is invalid\r
- parameter\r
- @retval EFI_UNSUPPORTED the input DevicePath does not contain Fv file\r
- guild at all\r
- @retval EFI_ALREADY_STARTED the input DevicePath has pointed to Fv file, it is\r
- valid\r
- @retval EFI_SUCCESS has successfully updated the invalid DevicePath,\r
- and return the updated device path in DevicePath\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-BdsLibUpdateFvFileDevicePath (\r
- IN OUT EFI_DEVICE_PATH_PROTOCOL ** DevicePath,\r
- IN EFI_GUID *FileGuid\r
- )\r
-{\r
- EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r
- EFI_DEVICE_PATH_PROTOCOL *LastDeviceNode;\r
- EFI_STATUS Status;\r
- EFI_GUID *GuidPoint;\r
- UINTN Index;\r
- UINTN FvHandleCount;\r
- EFI_HANDLE *FvHandleBuffer;\r
- EFI_FV_FILETYPE Type;\r
- UINTN Size;\r
- EFI_FV_FILE_ATTRIBUTES Attributes;\r
- UINT32 AuthenticationStatus;\r
- BOOLEAN FindFvFile;\r
- EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;\r
- EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;\r
- MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FvFileNode;\r
- EFI_HANDLE FoundFvHandle;\r
- EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;\r
-\r
- if ((DevicePath == NULL) || (*DevicePath == NULL)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- if (FileGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- \r
- //\r
- // Check whether the device path point to the default the input Fv file\r
- //\r
- TempDevicePath = *DevicePath;\r
- LastDeviceNode = TempDevicePath;\r
- while (!IsDevicePathEnd (TempDevicePath)) {\r
- LastDeviceNode = TempDevicePath;\r
- TempDevicePath = NextDevicePathNode (TempDevicePath);\r
- }\r
- GuidPoint = EfiGetNameGuidFromFwVolDevicePathNode (\r
- (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) LastDeviceNode\r
- );\r
- if (GuidPoint == NULL) {\r
- //\r
- // if this option does not points to a Fv file, just return EFI_UNSUPPORTED\r
- //\r
- return EFI_UNSUPPORTED;\r
- }\r
- if (!CompareGuid (GuidPoint, FileGuid)) {\r
- //\r
- // If the Fv file is not the input file guid, just return EFI_UNSUPPORTED\r
- //\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- //\r
- // Check whether the input Fv file device path is valid\r
- //\r
- TempDevicePath = *DevicePath;\r
- FoundFvHandle = NULL;\r
- Status = gBS->LocateDevicePath (\r
- &gEfiFirmwareVolume2ProtocolGuid,\r
- &TempDevicePath,\r
- &FoundFvHandle\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- Status = gBS->HandleProtocol (\r
- FoundFvHandle,\r
- &gEfiFirmwareVolume2ProtocolGuid,\r
- (VOID **) &Fv\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Set FV ReadFile Buffer as NULL, only need to check whether input Fv file exist there\r
- //\r
- Status = Fv->ReadFile (\r
- Fv,\r
- FileGuid,\r
- NULL,\r
- &Size,\r
- &Type,\r
- &Attributes,\r
- &AuthenticationStatus\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- return EFI_ALREADY_STARTED;\r
- }\r
- }\r
- }\r
-\r
- //\r
- // Look for the input wanted FV file in current FV\r
- // First, try to look for in Bds own FV. Bds and input wanted FV file usually are in the same FV\r
- //\r
- FindFvFile = FALSE;\r
- FoundFvHandle = NULL;\r
- Status = gBS->HandleProtocol (\r
- mBdsImageHandle,\r
- &gEfiLoadedImageProtocolGuid,\r
- (VOID **) &LoadedImage\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- Status = gBS->HandleProtocol (\r
- LoadedImage->DeviceHandle,\r
- &gEfiFirmwareVolume2ProtocolGuid,\r
- (VOID **) &Fv\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- Status = Fv->ReadFile (\r
- Fv,\r
- FileGuid,\r
- NULL,\r
- &Size,\r
- &Type,\r
- &Attributes,\r
- &AuthenticationStatus\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- FindFvFile = TRUE;\r
- FoundFvHandle = LoadedImage->DeviceHandle;\r
- }\r
- }\r
- }\r
- //\r
- // Second, if fail to find, try to enumerate all FV\r
- //\r
- if (!FindFvFile) {\r
- FvHandleBuffer = NULL;\r
- gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiFirmwareVolume2ProtocolGuid,\r
- NULL,\r
- &FvHandleCount,\r
- &FvHandleBuffer\r
- );\r
- for (Index = 0; Index < FvHandleCount; Index++) {\r
- gBS->HandleProtocol (\r
- FvHandleBuffer[Index],\r
- &gEfiFirmwareVolume2ProtocolGuid,\r
- (VOID **) &Fv\r
- );\r
-\r
- Status = Fv->ReadFile (\r
- Fv,\r
- FileGuid,\r
- NULL,\r
- &Size,\r
- &Type,\r
- &Attributes,\r
- &AuthenticationStatus\r
- );\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // Skip if input Fv file not in the FV\r
- //\r
- continue;\r
- }\r
- FindFvFile = TRUE;\r
- FoundFvHandle = FvHandleBuffer[Index];\r
- break;\r
- }\r
-\r
- if (FvHandleBuffer != NULL) {\r
- FreePool (FvHandleBuffer); \r
- }\r
- }\r
-\r
- if (FindFvFile) {\r
- //\r
- // Build the shell device path\r
- //\r
- NewDevicePath = DevicePathFromHandle (FoundFvHandle);\r
- EfiInitializeFwVolDevicepathNode (&FvFileNode, FileGuid);\r
- NewDevicePath = AppendDevicePathNode (NewDevicePath, (EFI_DEVICE_PATH_PROTOCOL *) &FvFileNode);\r
- *DevicePath = NewDevicePath;\r
- return EFI_SUCCESS;\r
- }\r
- return EFI_NOT_FOUND;\r
-}\r
projects / mirror_edk2.git / blobdiff