| /*++ | |
| Copyright (c) 2006, 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: | |
| BdsMisc.c | |
| Abstract: | |
| Misc BDS library function | |
| --*/ | |
| extern UINT16 gPlatformBootTimeOutDefault; | |
| UINT16 | |
| BdsLibGetTimeout ( | |
| VOID | |
| ) | |
| /*++ | |
| Routine Description: | |
| Return the default value for system Timeout variable. | |
| Arguments: | |
| None | |
| Returns: | |
| Timeout value. | |
| --*/ | |
| { | |
| UINT16 Timeout; | |
| UINTN Size; | |
| EFI_STATUS Status; | |
| // | |
| // Return Timeout variable or 0xffff if no valid | |
| // Timeout variable exists. | |
| // | |
| Size = sizeof (UINT16); | |
| Status = gRT->GetVariable (L"Timeout", &gEfiGlobalVariableGuid, NULL, &Size, &Timeout); | |
| if (!EFI_ERROR (Status)) { | |
| return Timeout; | |
| } | |
| // | |
| // To make the current EFI Automatic-Test activity possible, just add | |
| // following code to make AutoBoot enabled when this variable is not | |
| // present. | |
| // This code should be removed later. | |
| // | |
| Timeout = gPlatformBootTimeOutDefault; | |
| // | |
| // Notes: Platform should set default variable if non exists on all error cases!!! | |
| // | |
| Status = gRT->SetVariable ( | |
| L"Timeout", | |
| &gEfiGlobalVariableGuid, | |
| EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE, | |
| sizeof (UINT16), | |
| &Timeout | |
| ); | |
| return Timeout; | |
| } | |
| VOID | |
| BdsLibLoadDrivers ( | |
| IN LIST_ENTRY *BdsDriverLists | |
| ) | |
| /*++ | |
| Routine Description: | |
| The function will go through the driver optoin link list, load and start | |
| every driver the driver optoin device path point to. | |
| Arguments: | |
| BdsDriverLists - The header of the current driver option link list | |
| Returns: | |
| None | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| LIST_ENTRY *Link; | |
| BDS_COMMON_OPTION *Option; | |
| EFI_HANDLE ImageHandle; | |
| EFI_LOADED_IMAGE_PROTOCOL *ImageInfo; | |
| UINTN ExitDataSize; | |
| CHAR16 *ExitData; | |
| BOOLEAN ReconnectAll; | |
| ReconnectAll = FALSE; | |
| // | |
| // Process the driver option | |
| // | |
| for (Link = BdsDriverLists->ForwardLink; Link != BdsDriverLists; Link = Link->ForwardLink) { | |
| Option = CR (Link, BDS_COMMON_OPTION, Link, BDS_LOAD_OPTION_SIGNATURE); | |
| // | |
| // If a load option is not marked as LOAD_OPTION_ACTIVE, | |
| // the boot manager will not automatically load the option. | |
| // | |
| if (!IS_LOAD_OPTION_TYPE (Option->Attribute, LOAD_OPTION_ACTIVE)) { | |
| continue; | |
| } | |
| // | |
| // If a driver load option is marked as LOAD_OPTION_FORCE_RECONNECT, | |
| // then all of the EFI drivers in the system will be disconnected and | |
| // reconnected after the last driver load option is processed. | |
| // | |
| if (IS_LOAD_OPTION_TYPE (Option->Attribute, LOAD_OPTION_FORCE_RECONNECT)) { | |
| ReconnectAll = TRUE; | |
| } | |
| // | |
| // Make sure the driver path is connected. | |
| // | |
| BdsLibConnectDevicePath (Option->DevicePath); | |
| // | |
| // Load and start the image that Driver#### describes | |
| // | |
| Status = gBS->LoadImage ( | |
| FALSE, | |
| mBdsImageHandle, | |
| Option->DevicePath, | |
| NULL, | |
| 0, | |
| &ImageHandle | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid, &ImageInfo); | |
| // | |
| // Verify whether this image is a driver, if not, | |
| // exit it and continue to parse next load option | |
| // | |
| if (ImageInfo->ImageCodeType != EfiBootServicesCode && ImageInfo->ImageCodeType != EfiRuntimeServicesCode) { | |
| gBS->Exit (ImageHandle, EFI_INVALID_PARAMETER, 0, NULL); | |
| continue; | |
| } | |
| 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, "Driver Return Status = %r\n", Status)); | |
| // | |
| // Clear the Watchdog Timer after the image returns | |
| // | |
| gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL); | |
| } | |
| } | |
| // | |
| // Process the LOAD_OPTION_FORCE_RECONNECT driver option | |
| // | |
| if (ReconnectAll) { | |
| BdsLibDisconnectAllEfi (); | |
| BdsLibConnectAll (); | |
| } | |
| } | |
| EFI_STATUS | |
| BdsLibRegisterNewOption ( | |
| IN LIST_ENTRY *BdsOptionList, | |
| IN EFI_DEVICE_PATH_PROTOCOL *DevicePath, | |
| IN CHAR16 *String, | |
| IN CHAR16 *VariableName | |
| ) | |
| /*++ | |
| Routine Description: | |
| This function will register the new boot#### or driver#### option base on | |
| the VariableName. The new registered boot#### or driver#### will be linked | |
| to BdsOptionList and also update to the VariableName. After the boot#### or | |
| driver#### updated, the BootOrder or DriverOrder will also be updated. | |
| Arguments: | |
| BdsOptionList - The header of the boot#### or driver#### link list | |
| DevicePath - The device path which the boot#### | |
| or driver#### option present | |
| String - The description of the boot#### or driver#### | |
| VariableName - Indicate if the boot#### or driver#### option | |
| Returns: | |
| EFI_SUCCESS - The boot#### or driver#### have been success registered | |
| EFI_STATUS - Return the status of gRT->SetVariable (). | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| UINTN Index; | |
| UINT16 MaxOptionNumber; | |
| UINT16 RegisterOptionNumber; | |
| UINT16 *TempOptionPtr; | |
| UINTN TempOptionSize; | |
| UINT16 *OptionOrderPtr; | |
| VOID *OptionPtr; | |
| UINTN OptionSize; | |
| UINT8 *TempPtr; | |
| EFI_DEVICE_PATH_PROTOCOL *OptionDevicePath; | |
| CHAR16 *Description; | |
| CHAR16 OptionName[10]; | |
| BOOLEAN UpdateBootDevicePath; | |
| OptionPtr = NULL; | |
| OptionSize = 0; | |
| TempPtr = NULL; | |
| OptionDevicePath = NULL; | |
| Description = NULL; | |
| MaxOptionNumber = 0; | |
| OptionOrderPtr = NULL; | |
| UpdateBootDevicePath = FALSE; | |
| ZeroMem (OptionName, sizeof (OptionName)); | |
| TempOptionSize = 0; | |
| TempOptionPtr = BdsLibGetVariableAndSize ( | |
| VariableName, | |
| &gEfiGlobalVariableGuid, | |
| &TempOptionSize | |
| ); | |
| // | |
| // Compare with current option variable | |
| // | |
| for (Index = 0; Index < TempOptionSize / sizeof (UINT16); Index++) { | |
| // | |
| // Got the max option#### number | |
| // | |
| if (MaxOptionNumber < TempOptionPtr[Index]) { | |
| MaxOptionNumber = TempOptionPtr[Index]; | |
| } | |
| if (*VariableName == 'B') { | |
| UnicodeSPrint (OptionName, sizeof (OptionName), L"Boot%04x", TempOptionPtr[Index]); | |
| } else { | |
| UnicodeSPrint (OptionName, sizeof (OptionName), L"Driver%04x", TempOptionPtr[Index]); | |
| } | |
| OptionPtr = BdsLibGetVariableAndSize ( | |
| OptionName, | |
| &gEfiGlobalVariableGuid, | |
| &OptionSize | |
| ); | |
| TempPtr = OptionPtr; | |
| TempPtr += sizeof (UINT32) + sizeof (UINT16); | |
| Description = (CHAR16 *) TempPtr; | |
| TempPtr += StrSize ((CHAR16 *) TempPtr); | |
| OptionDevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr; | |
| // | |
| // Notes: the description may will change base on the GetStringToken | |
| // | |
| if (CompareMem (Description, String, StrSize (Description)) == 0) { | |
| if (CompareMem (OptionDevicePath, DevicePath, GetDevicePathSize (OptionDevicePath)) == 0) { | |
| // | |
| // Got the option, so just return | |
| // | |
| gBS->FreePool (OptionPtr); | |
| gBS->FreePool (TempOptionPtr); | |
| return EFI_SUCCESS; | |
| } else { | |
| // | |
| // Boot device path changed, need update. | |
| // | |
| UpdateBootDevicePath = TRUE; | |
| break; | |
| } | |
| } | |
| gBS->FreePool (OptionPtr); | |
| } | |
| OptionSize = sizeof (UINT32) + sizeof (UINT16) + StrSize (String) + GetDevicePathSize (DevicePath); | |
| OptionPtr = AllocateZeroPool (OptionSize); | |
| TempPtr = OptionPtr; | |
| *(UINT32 *) TempPtr = LOAD_OPTION_ACTIVE; | |
| TempPtr += sizeof (UINT32); | |
| *(UINT16 *) TempPtr = (UINT16) GetDevicePathSize (DevicePath); | |
| TempPtr += sizeof (UINT16); | |
| CopyMem (TempPtr, String, StrSize (String)); | |
| TempPtr += StrSize (String); | |
| CopyMem (TempPtr, DevicePath, GetDevicePathSize (DevicePath)); | |
| if (UpdateBootDevicePath) { | |
| // | |
| // The number in option#### to be updated | |
| // | |
| RegisterOptionNumber = TempOptionPtr[Index]; | |
| } else { | |
| // | |
| // The new option#### number | |
| // | |
| RegisterOptionNumber = MaxOptionNumber + 1; | |
| } | |
| if (*VariableName == 'B') { | |
| UnicodeSPrint (OptionName, sizeof (OptionName), L"Boot%04x", RegisterOptionNumber); | |
| } else { | |
| UnicodeSPrint (OptionName, sizeof (OptionName), L"Driver%04x", RegisterOptionNumber); | |
| } | |
| Status = gRT->SetVariable ( | |
| OptionName, | |
| &gEfiGlobalVariableGuid, | |
| EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE, | |
| OptionSize, | |
| OptionPtr | |
| ); | |
| if (EFI_ERROR (Status) || UpdateBootDevicePath) { | |
| gBS->FreePool (OptionPtr); | |
| gBS->FreePool (TempOptionPtr); | |
| return Status; | |
| } | |
| gBS->FreePool (OptionPtr); | |
| // | |
| // Update the option order variable | |
| // | |
| OptionOrderPtr = AllocateZeroPool ((Index + 1) * sizeof (UINT16)); | |
| CopyMem (OptionOrderPtr, TempOptionPtr, Index * sizeof (UINT16)); | |
| OptionOrderPtr[Index] = RegisterOptionNumber; | |
| Status = gRT->SetVariable ( | |
| VariableName, | |
| &gEfiGlobalVariableGuid, | |
| EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE, | |
| (Index + 1) * sizeof (UINT16), | |
| OptionOrderPtr | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| gBS->FreePool (TempOptionPtr); | |
| gBS->FreePool (OptionOrderPtr); | |
| return Status; | |
| } | |
| gBS->FreePool (TempOptionPtr); | |
| gBS->FreePool (OptionOrderPtr); | |
| return EFI_SUCCESS; | |
| } | |
| BDS_COMMON_OPTION * | |
| BdsLibVariableToOption ( | |
| IN OUT LIST_ENTRY *BdsCommonOptionList, | |
| IN CHAR16 *VariableName | |
| ) | |
| /*++ | |
| Routine Description: | |
| Build the boot#### or driver#### option from the VariableName, the | |
| build boot#### or driver#### will also be linked to BdsCommonOptionList | |
| Arguments: | |
| BdsCommonOptionList - The header of the boot#### or driver#### option link list | |
| VariableName - EFI Variable name indicate if it is boot#### or driver#### | |
| Returns: | |
| BDS_COMMON_OPTION - Get the option just been created | |
| NULL - Failed to get the new option | |
| --*/ | |
| { | |
| UINT32 Attribute; | |
| UINT16 FilePathSize; | |
| UINT8 *Variable; | |
| UINT8 *TempPtr; | |
| UINTN VariableSize; | |
| EFI_DEVICE_PATH_PROTOCOL *DevicePath; | |
| BDS_COMMON_OPTION *Option; | |
| VOID *LoadOptions; | |
| UINT32 LoadOptionsSize; | |
| CHAR16 *Description; | |
| // | |
| // Read the variable. We will never free this data. | |
| // | |
| Variable = BdsLibGetVariableAndSize ( | |
| VariableName, | |
| &gEfiGlobalVariableGuid, | |
| &VariableSize | |
| ); | |
| if (Variable == NULL) { | |
| return NULL; | |
| } | |
| // | |
| // Notes: careful defined the variable of Boot#### or | |
| // Driver####, consider use some macro to abstract the code | |
| // | |
| // | |
| // Get the option attribute | |
| // | |
| TempPtr = Variable; | |
| Attribute = *(UINT32 *) Variable; | |
| TempPtr += sizeof (UINT32); | |
| // | |
| // Get the option's device path size | |
| // | |
| FilePathSize = *(UINT16 *) TempPtr; | |
| TempPtr += sizeof (UINT16); | |
| // | |
| // Get the option's description string | |
| // | |
| Description = (CHAR16 *) TempPtr; | |
| // | |
| // Get the option's description string size | |
| // | |
| TempPtr += StrSize ((CHAR16 *) TempPtr); | |
| // | |
| // Get the option's device path | |
| // | |
| DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr; | |
| TempPtr += FilePathSize; | |
| LoadOptions = TempPtr; | |
| LoadOptionsSize = (UINT32) (VariableSize - (UINTN) (TempPtr - Variable)); | |
| // | |
| // The Console variables may have multiple device paths, so make | |
| // an Entry for each one. | |
| // | |
| Option = AllocateZeroPool (sizeof (BDS_COMMON_OPTION)); | |
| if (Option == NULL) { | |
| return NULL; | |
| } | |
| Option->Signature = BDS_LOAD_OPTION_SIGNATURE; | |
| Option->DevicePath = AllocateZeroPool (GetDevicePathSize (DevicePath)); | |
| CopyMem (Option->DevicePath, DevicePath, GetDevicePathSize (DevicePath)); | |
| Option->Attribute = Attribute; | |
| Option->Description = AllocateZeroPool (StrSize (Description)); | |
| CopyMem (Option->Description, Description, StrSize (Description)); | |
| Option->LoadOptions = AllocateZeroPool (LoadOptionsSize); | |
| CopyMem (Option->LoadOptions, LoadOptions, LoadOptionsSize); | |
| Option->LoadOptionsSize = LoadOptionsSize; | |
| // | |
| // Insert active entry to BdsDeviceList | |
| // | |
| if ((Option->Attribute & LOAD_OPTION_ACTIVE) == LOAD_OPTION_ACTIVE) { | |
| InsertTailList (BdsCommonOptionList, &Option->Link); | |
| gBS->FreePool (Variable); | |
| return Option; | |
| } | |
| gBS->FreePool (Variable); | |
| gBS->FreePool (Option); | |
| return NULL; | |
| } | |
| EFI_STATUS | |
| BdsLibBuildOptionFromVar ( | |
| IN LIST_ENTRY *BdsCommonOptionList, | |
| IN CHAR16 *VariableName | |
| ) | |
| /*++ | |
| Routine Description: | |
| Process BootOrder, or DriverOrder variables, by calling | |
| BdsLibVariableToOption () for each UINT16 in the variables. | |
| Arguments: | |
| BdsCommonOptionList - The header of the option list base on variable | |
| VariableName | |
| VariableName - EFI Variable name indicate the BootOrder or DriverOrder | |
| Returns: | |
| EFI_SUCCESS - Success create the boot option or driver option list | |
| EFI_OUT_OF_RESOURCES - Failed to get the boot option or driver option list | |
| --*/ | |
| { | |
| UINT16 *OptionOrder; | |
| UINTN OptionOrderSize; | |
| UINTN Index; | |
| BDS_COMMON_OPTION *Option; | |
| CHAR16 OptionName[20]; | |
| // | |
| // Zero Buffer in order to get all BOOT#### variables | |
| // | |
| ZeroMem (OptionName, sizeof (OptionName)); | |
| // | |
| // Read the BootOrder, or DriverOrder variable. | |
| // | |
| OptionOrder = BdsLibGetVariableAndSize ( | |
| VariableName, | |
| &gEfiGlobalVariableGuid, | |
| &OptionOrderSize | |
| ); | |
| if (OptionOrder == NULL) { | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| for (Index = 0; Index < OptionOrderSize / sizeof (UINT16); Index++) { | |
| if (*VariableName == 'B') { | |
| UnicodeSPrint (OptionName, sizeof (OptionName), L"Boot%04x", OptionOrder[Index]); | |
| } else { | |
| UnicodeSPrint (OptionName, sizeof (OptionName), L"Driver%04x", OptionOrder[Index]); | |
| } | |
| Option = BdsLibVariableToOption (BdsCommonOptionList, OptionName); | |
| Option->BootCurrent = OptionOrder[Index]; | |
| } | |
| gBS->FreePool (OptionOrder); | |
| return EFI_SUCCESS; | |
| } | |
| EFI_STATUS | |
| BdsLibGetBootMode ( | |
| OUT EFI_BOOT_MODE *BootMode | |
| ) | |
| /*++ | |
| Routine Description: | |
| Get boot mode by looking up configuration table and parsing HOB list | |
| Arguments: | |
| BootMode - Boot mode from PEI handoff HOB. | |
| Returns: | |
| EFI_SUCCESS - Successfully get boot mode | |
| EFI_NOT_FOUND - Can not find the current system boot mode | |
| --*/ | |
| { | |
| EFI_HOB_HANDOFF_INFO_TABLE *HobList; | |
| HobList = GetHobList (); | |
| ASSERT (HobList->Header.HobType == EFI_HOB_TYPE_HANDOFF); | |
| *BootMode = HobList->BootMode; | |
| return EFI_SUCCESS; | |
| } | |
| VOID * | |
| BdsLibGetVariableAndSize ( | |
| IN CHAR16 *Name, | |
| IN EFI_GUID *VendorGuid, | |
| OUT UINTN *VariableSize | |
| ) | |
| /*++ | |
| Routine Description: | |
| Read the EFI variable (VendorGuid/Name) and return a dynamically allocated | |
| buffer, and the size of the buffer. If failure return NULL. | |
| Arguments: | |
| Name - String part of EFI variable name | |
| VendorGuid - GUID part of EFI variable name | |
| VariableSize - Returns the size of the EFI variable that was read | |
| Returns: | |
| Dynamically allocated memory that contains a copy of the EFI variable. | |
| Caller is responsible freeing the buffer. | |
| NULL - Variable was not read | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| UINTN BufferSize; | |
| VOID *Buffer; | |
| Buffer = NULL; | |
| // | |
| // Pass in a zero size buffer to find the required buffer size. | |
| // | |
| BufferSize = 0; | |
| Status = gRT->GetVariable (Name, VendorGuid, NULL, &BufferSize, Buffer); | |
| if (Status == EFI_BUFFER_TOO_SMALL) { | |
| // | |
| // Allocate the buffer to return | |
| // | |
| Buffer = AllocateZeroPool (BufferSize); | |
| if (Buffer == NULL) { | |
| return NULL; | |
| } | |
| // | |
| // Read variable into the allocated buffer. | |
| // | |
| Status = gRT->GetVariable (Name, VendorGuid, NULL, &BufferSize, Buffer); | |
| if (EFI_ERROR (Status)) { | |
| BufferSize = 0; | |
| } | |
| } | |
| *VariableSize = BufferSize; | |
| return Buffer; | |
| } | |
| BOOLEAN | |
| BdsLibMatchDevicePaths ( | |
| IN EFI_DEVICE_PATH_PROTOCOL *Multi, | |
| IN EFI_DEVICE_PATH_PROTOCOL *Single | |
| ) | |
| /*++ | |
| Routine Description: | |
| Function compares a device path data structure to that of all the nodes of a | |
| second device path instance. | |
| Arguments: | |
| Multi - A pointer to a multi-instance device path data structure. | |
| Single - A pointer to a single-instance device path data structure. | |
| Returns: | |
| TRUE - If the Single is contained within Multi | |
| FALSE - The Single is not match within Multi | |
| --*/ | |
| { | |
| EFI_DEVICE_PATH_PROTOCOL *DevicePath; | |
| EFI_DEVICE_PATH_PROTOCOL *DevicePathInst; | |
| UINTN Size; | |
| if (!Multi || !Single) { | |
| return FALSE; | |
| } | |
| DevicePath = Multi; | |
| DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size); | |
| Size -= sizeof (EFI_DEVICE_PATH_PROTOCOL); | |
| // | |
| // Search for the match of 'Single' in 'Multi' | |
| // | |
| while (DevicePathInst != NULL) { | |
| // | |
| // If the single device path is found in multiple device paths, | |
| // return success | |
| // | |
| if (Size == 0) { | |
| return FALSE; | |
| } | |
| if (CompareMem (Single, DevicePathInst, Size) == 0) { | |
| return TRUE; | |
| } | |
| gBS->FreePool (DevicePathInst); | |
| DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size); | |
| Size -= sizeof (EFI_DEVICE_PATH_PROTOCOL); | |
| } | |
| return FALSE; | |
| } | |
| EFI_STATUS | |
| BdsLibOutputStrings ( | |
| IN EFI_SIMPLE_TEXT_OUT_PROTOCOL *ConOut, | |
| ... | |
| ) | |
| /*++ | |
| Routine Description: | |
| This function prints a series of strings. | |
| Arguments: | |
| ConOut - Pointer to EFI_SIMPLE_TEXT_OUT_PROTOCOL | |
| ... - A variable argument list containing series of strings, | |
| the last string must be NULL. | |
| Returns: | |
| EFI_SUCCESS - Success print out the string using ConOut. | |
| EFI_STATUS - Return the status of the ConOut->OutputString (). | |
| --*/ | |
| { | |
| VA_LIST args; | |
| EFI_STATUS Status; | |
| CHAR16 *String; | |
| Status = EFI_SUCCESS; | |
| VA_START (args, ConOut); | |
| while (!EFI_ERROR (Status)) { | |
| // | |
| // If String is NULL, then it's the end of the list | |
| // | |
| String = VA_ARG (args, CHAR16 *); | |
| if (!String) { | |
| break; | |
| } | |
| Status = ConOut->OutputString (ConOut, String); | |
| if (EFI_ERROR (Status)) { | |
| break; | |
| } | |
| } | |
| return Status; | |
| } |