+ if (StrCmp (BootOption->Description, L"UEFI Shell") == 0) {\r
+ return 0;\r
+ }\r
+ return 100;\r
+}\r
+\r
+INTN\r
+EFIAPI\r
+CompareBootOption (\r
+ CONST EFI_BOOT_MANAGER_LOAD_OPTION *Left,\r
+ CONST EFI_BOOT_MANAGER_LOAD_OPTION *Right\r
+ )\r
+{\r
+ return BootOptionPriority (Left) - BootOptionPriority (Right);\r
+}\r
+\r
+/**\r
+ Generate device path include the input file guid info.\r
+\r
+ @param FileGuid Input file guid for the BootManagerMenuApp.\r
+\r
+ @retval DevicePath for BootManagerMenuApp.\r
+**/\r
+EFI_DEVICE_PATH *\r
+FvFilePath (\r
+ EFI_GUID *FileGuid\r
+ )\r
+{\r
+\r
+ EFI_STATUS Status;\r
+ EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;\r
+ MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FileNode;\r
+\r
+ EfiInitializeFwVolDevicepathNode (&FileNode, FileGuid);\r
+\r
+ Status = gBS->HandleProtocol (\r
+ gImageHandle,\r
+ &gEfiLoadedImageProtocolGuid,\r
+ (VOID **) &LoadedImage\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ return AppendDevicePathNode (\r
+ DevicePathFromHandle (LoadedImage->DeviceHandle),\r
+ (EFI_DEVICE_PATH_PROTOCOL *) &FileNode\r
+ );\r
+}\r
+\r
+/**\r
+ Create one boot option for BootManagerMenuApp.\r
+\r
+ @param FileGuid Input file guid for the BootManagerMenuApp.\r
+ @param Description Description of the BootManagerMenuApp boot option.\r
+ @param Position Position of the new load option to put in the ****Order variable.\r
+ @param IsBootCategory Whether this is a boot category.\r
+\r
+\r
+ @retval OptionNumber Return the option number info.\r
+\r
+**/\r
+UINTN\r
+RegisterBootManagerMenuAppBootOption (\r
+ EFI_GUID *FileGuid,\r
+ CHAR16 *Description,\r
+ UINTN Position,\r
+ BOOLEAN IsBootCategory\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_BOOT_MANAGER_LOAD_OPTION NewOption;\r
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
+ UINTN OptionNumber;\r
+\r
+ DevicePath = FvFilePath (FileGuid);\r
+ Status = EfiBootManagerInitializeLoadOption (\r
+ &NewOption,\r
+ LoadOptionNumberUnassigned,\r
+ LoadOptionTypeBoot,\r
+ IsBootCategory ? LOAD_OPTION_ACTIVE : LOAD_OPTION_CATEGORY_APP,\r
+ Description,\r
+ DevicePath,\r
+ NULL,\r
+ 0\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+ FreePool (DevicePath);\r
+\r
+ Status = EfiBootManagerAddLoadOptionVariable (&NewOption, Position);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ OptionNumber = NewOption.OptionNumber;\r
+\r
+ EfiBootManagerFreeLoadOption (&NewOption);\r
+\r
+ return OptionNumber;\r
+}\r
+\r
+/**\r
+ Check if it's a Device Path pointing to BootManagerMenuApp.\r
+\r
+ @param DevicePath Input device path.\r
+\r
+ @retval TRUE The device path is BootManagerMenuApp File Device Path.\r
+ @retval FALSE The device path is NOT BootManagerMenuApp File Device Path.\r
+**/\r
+BOOLEAN\r
+IsBootManagerMenuAppFilePath (\r
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
+)\r
+{\r
+ EFI_HANDLE FvHandle;\r
+ VOID *NameGuid;\r
+ EFI_STATUS Status;\r
+\r
+ Status = gBS->LocateDevicePath (&gEfiFirmwareVolume2ProtocolGuid, &DevicePath, &FvHandle);\r
+ if (!EFI_ERROR (Status)) {\r
+ NameGuid = EfiGetNameGuidFromFwVolDevicePathNode ((CONST MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) DevicePath);\r
+ if (NameGuid != NULL) {\r
+ return CompareGuid (NameGuid, &mBootMenuFile);\r
+ }\r
+ }\r
+\r
+ return FALSE;\r
+}\r
+\r
+/**\r
+ Return the boot option number to the BootManagerMenuApp.\r
+\r
+ If not found it in the current boot option, create a new one.\r
+\r
+ @retval OptionNumber Return the boot option number to the BootManagerMenuApp.\r
+\r
+**/\r
+UINTN\r
+GetBootManagerMenuAppOption (\r
+ VOID\r
+ )\r
+{\r
+ UINTN BootOptionCount;\r
+ EFI_BOOT_MANAGER_LOAD_OPTION *BootOptions;\r
+ UINTN Index;\r
+ UINTN OptionNumber;\r
+\r
+ OptionNumber = 0;\r
+\r
+ BootOptions = EfiBootManagerGetLoadOptions (&BootOptionCount, LoadOptionTypeBoot);\r
+\r
+ for (Index = 0; Index < BootOptionCount; Index++) {\r
+ if (IsBootManagerMenuAppFilePath (BootOptions[Index].FilePath)) {\r
+ OptionNumber = BootOptions[Index].OptionNumber;\r
+ break;\r
+ }\r
+ }\r
+\r
+ EfiBootManagerFreeLoadOptions (BootOptions, BootOptionCount);\r
+\r
+ if (Index >= BootOptionCount) {\r
+ //\r
+ // If not found the BootManagerMenuApp, create it.\r
+ //\r
+ OptionNumber = (UINT16) RegisterBootManagerMenuAppBootOption (&mBootMenuFile, L"UEFI BootManagerMenuApp", (UINTN) -1, FALSE);\r
+ }\r
+\r
+ return OptionNumber;\r