/** @file
Provide Boot Manager related library APIs.
Copyright (c) 2011 - 2019, Intel Corporation. All rights reserved.
(C) Copyright 2015-2016 Hewlett Packard Enterprise Development LP
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _UEFI_BOOT_MANAGER_LIB_H_
#define _UEFI_BOOT_MANAGER_LIB_H_
#include
#include
//
// Boot Manager load option library functions.
//
//
// Load Option Type
//
typedef enum {
LoadOptionTypeDriver,
LoadOptionTypeSysPrep,
LoadOptionTypeBoot,
LoadOptionTypePlatformRecovery,
LoadOptionTypeMax
} EFI_BOOT_MANAGER_LOAD_OPTION_TYPE;
typedef enum {
LoadOptionNumberMax = 0x10000,
LoadOptionNumberUnassigned = LoadOptionNumberMax
} EFI_BOOT_MANAGER_LOAD_OPTION_NUMBER;
//
// Common structure definition for DriverOption and BootOption
//
typedef struct {
//
// Data read from UEFI NV variables
//
UINTN OptionNumber; // #### numerical value, could be LoadOptionNumberUnassigned
EFI_BOOT_MANAGER_LOAD_OPTION_TYPE OptionType; // LoadOptionTypeBoot or LoadOptionTypeDriver
UINT32 Attributes; // Load Option Attributes
CHAR16 *Description; // Load Option Description
EFI_DEVICE_PATH_PROTOCOL *FilePath; // Load Option Device Path
UINT8 *OptionalData; // Load Option optional data to pass into image
UINT32 OptionalDataSize; // Load Option size of OptionalData
EFI_GUID VendorGuid;
//
// Used at runtime
//
EFI_STATUS Status; // Status returned from boot attempt gBS->StartImage ()
CHAR16 *ExitData; // Exit data returned from gBS->StartImage ()
UINTN ExitDataSize; // Size of ExitData
} EFI_BOOT_MANAGER_LOAD_OPTION;
/**
Returns an array of load options based on the EFI variable
L"BootOrder"/L"DriverOrder" and the L"Boot####"/L"Driver####" variables impled by it.
#### is the hex value of the UINT16 in each BootOrder/DriverOrder entry.
@param LoadOptionCount Returns number of entries in the array.
@param LoadOptionType The type of the load option.
@retval NULL No load options exist.
@retval !NULL Array of load option entries.
**/
EFI_BOOT_MANAGER_LOAD_OPTION *
EFIAPI
EfiBootManagerGetLoadOptions (
OUT UINTN *LoadOptionCount,
IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE LoadOptionType
);
/**
Free an array of load options returned from EfiBootManagerGetLoadOptions().
@param LoadOptions Pointer to the array of load options to free.
@param LoadOptionCount Number of array entries in LoadOptions.
@return EFI_SUCCESS LoadOptions was freed.
@return EFI_INVALID_PARAMETER LoadOptions is NULL.
**/
EFI_STATUS
EFIAPI
EfiBootManagerFreeLoadOptions (
IN EFI_BOOT_MANAGER_LOAD_OPTION *LoadOptions,
IN UINTN LoadOptionCount
);
/**
Initialize a load option.
@param Option Pointer to the load option to be initialized.
@param OptionNumber Option number of the load option.
@param OptionType Type of the load option.
@param Attributes Attributes of the load option.
@param Description Description of the load option.
@param FilePath Device path of the load option.
@param OptionalData Optional data of the load option.
@param OptionalDataSize Size of the optional data of the load option.
@retval EFI_SUCCESS The load option was initialized successfully.
@retval EFI_INVALID_PARAMETER Option, Description or FilePath is NULL.
**/
EFI_STATUS
EFIAPI
EfiBootManagerInitializeLoadOption (
IN OUT EFI_BOOT_MANAGER_LOAD_OPTION *Option,
IN UINTN OptionNumber,
IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE OptionType,
IN UINT32 Attributes,
IN CHAR16 *Description,
IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
IN UINT8 *OptionalData,
IN UINT32 OptionalDataSize
);
/**
Free a load option created by EfiBootManagerInitializeLoadOption()
or EfiBootManagerVariableToLoadOption().
@param LoadOption Pointer to the load option to free.
CONCERN: Check Boot#### instead of BootOrder, optimize, spec clarify
@return EFI_SUCCESS LoadOption was freed.
@return EFI_INVALID_PARAMETER LoadOption is NULL.
**/
EFI_STATUS
EFIAPI
EfiBootManagerFreeLoadOption (
IN EFI_BOOT_MANAGER_LOAD_OPTION *LoadOption
);
/**
Initialize the load option from the VariableName.
@param VariableName EFI Variable name which could be Boot#### or
Driver####
@param LoadOption Pointer to the load option to be initialized
@retval EFI_SUCCESS The option was created
@retval EFI_INVALID_PARAMETER VariableName or LoadOption is NULL.
@retval EFI_NOT_FOUND The variable specified by VariableName cannot be found.
**/
EFI_STATUS
EFIAPI
EfiBootManagerVariableToLoadOption (
IN CHAR16 *VariableName,
IN OUT EFI_BOOT_MANAGER_LOAD_OPTION *LoadOption
);
/**
Create the Boot#### or Driver#### variable from the load option.
@param LoadOption Pointer to the load option.
@retval EFI_SUCCESS The variable was created.
@retval Others Error status returned by RT->SetVariable.
**/
EFI_STATUS
EFIAPI
EfiBootManagerLoadOptionToVariable (
IN CONST EFI_BOOT_MANAGER_LOAD_OPTION *LoadOption
);
/**
This function will register the new Boot####, Driver#### or SysPrep#### option.
After the *#### is updated, the *Order will also be updated.
@param Option Pointer to load option to add. If on input
Option->OptionNumber is LoadOptionNumberUnassigned,
then on output Option->OptionNumber is updated to
the number of the new Boot####,
Driver#### or SysPrep#### option.
@param Position Position of the new load option to put in the ****Order variable.
@retval EFI_SUCCESS The *#### have been successfully registered.
@retval EFI_INVALID_PARAMETER The option number exceeds 0xFFFF.
@retval EFI_ALREADY_STARTED The option number of Option is being used already.
Note: this API only adds new load option, no replacement support.
@retval EFI_OUT_OF_RESOURCES There is no free option number that can be used when the
option number specified in the Option is LoadOptionNumberUnassigned.
@return Status codes of gRT->SetVariable ().
**/
EFI_STATUS
EFIAPI
EfiBootManagerAddLoadOptionVariable (
IN OUT EFI_BOOT_MANAGER_LOAD_OPTION *Option,
IN UINTN Position
);
/**
Delete the load option according to the OptionNumber and OptionType.
Only the BootOrder/DriverOrder is updated to remove the reference of the OptionNumber.
@param OptionNumber Option number of the load option.
@param OptionType Type of the load option.
@retval EFI_NOT_FOUND The load option cannot be found.
@retval EFI_SUCCESS The load option was deleted.
**/
EFI_STATUS
EFIAPI
EfiBootManagerDeleteLoadOptionVariable (
IN UINTN OptionNumber,
IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE OptionType
);
/**
Sort the load options. The DriverOrder/BootOrder variables will be re-created to
reflect the new order.
@param OptionType The type of the load option.
@param CompareFunction The comparator function pointer.
**/
VOID
EFIAPI
EfiBootManagerSortLoadOptionVariable (
IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE OptionType,
IN SORT_COMPARE CompareFunction
);
/**
Return the index of the load option in the load option array.
The function consider two load options are equal when the
OptionType, Attributes, Description, FilePath and OptionalData are equal.
@param Key Pointer to the load option to be found.
@param Array Pointer to the array of load options to be found.
@param Count Number of entries in the Array.
@retval -1 Key wasn't found in the Array.
@retval 0 ~ Count-1 The index of the Key in the Array.
**/
INTN
EFIAPI
EfiBootManagerFindLoadOption (
IN CONST EFI_BOOT_MANAGER_LOAD_OPTION *Key,
IN CONST EFI_BOOT_MANAGER_LOAD_OPTION *Array,
IN UINTN Count
);
//
// Boot Manager hot key library functions.
//
#pragma pack(1)
///
/// EFI Key Option.
///
typedef struct {
///
/// Specifies options about how the key will be processed.
///
EFI_BOOT_KEY_DATA KeyData;
///
/// The CRC-32 which should match the CRC-32 of the entire EFI_LOAD_OPTION to
/// which BootOption refers. If the CRC-32s do not match this value, then this key
/// option is ignored.
///
UINT32 BootOptionCrc;
///
/// The Boot#### option which will be invoked if this key is pressed and the boot option
/// is active (LOAD_OPTION_ACTIVE is set).
///
UINT16 BootOption;
///
/// The key codes to compare against those returned by the
/// EFI_SIMPLE_TEXT_INPUT and EFI_SIMPLE_TEXT_INPUT_EX protocols.
/// The number of key codes (0-3) is specified by the EFI_KEY_CODE_COUNT field in KeyOptions.
///
EFI_INPUT_KEY Keys[3];
UINT16 OptionNumber;
} EFI_BOOT_MANAGER_KEY_OPTION;
#pragma pack()
/**
Start the hot key service so that the key press can trigger the boot option.
@param HotkeyTriggered Return the waitable event and it will be signaled
when a valid hot key is pressed.
@retval EFI_SUCCESS The hot key service is started.
**/
EFI_STATUS
EFIAPI
EfiBootManagerStartHotkeyService (
IN EFI_EVENT *HotkeyTriggered
);
//
// Modifier for EfiBootManagerAddKeyOptionVariable and EfiBootManagerDeleteKeyOptionVariable
//
#define EFI_BOOT_MANAGER_SHIFT_PRESSED 0x00000001
#define EFI_BOOT_MANAGER_CONTROL_PRESSED 0x00000002
#define EFI_BOOT_MANAGER_ALT_PRESSED 0x00000004
#define EFI_BOOT_MANAGER_LOGO_PRESSED 0x00000008
#define EFI_BOOT_MANAGER_MENU_KEY_PRESSED 0x00000010
#define EFI_BOOT_MANAGER_SYS_REQ_PRESSED 0x00000020
/**
Add the key option.
It adds the key option variable and the key option takes affect immediately.
@param AddedOption Return the added key option.
@param BootOptionNumber The boot option number for the key option.
@param Modifier Key shift state.
@param ... Parameter list of pointer of EFI_INPUT_KEY.
@retval EFI_SUCCESS The key option is added.
@retval EFI_ALREADY_STARTED The hot key is already used by certain key option.
**/
EFI_STATUS
EFIAPI
EfiBootManagerAddKeyOptionVariable (
OUT EFI_BOOT_MANAGER_KEY_OPTION *AddedOption, OPTIONAL
IN UINT16 BootOptionNumber,
IN UINT32 Modifier,
...
);
/**
Delete the Key Option variable and unregister the hot key
@param DeletedOption Return the deleted key options.
@param Modifier Key shift state.
@param ... Parameter list of pointer of EFI_INPUT_KEY.
@retval EFI_SUCCESS The key option is deleted.
@retval EFI_NOT_FOUND The key option cannot be found.
**/
EFI_STATUS
EFIAPI
EfiBootManagerDeleteKeyOptionVariable (
IN EFI_BOOT_MANAGER_KEY_OPTION *DeletedOption, OPTIONAL
IN UINT32 Modifier,
...
);
/**
Register the key option to exit the waiting of the Boot Manager timeout.
Platform should ensure that the continue key option isn't conflict with
other boot key options.
@param Modifier Key shift state.
@param ... Parameter list of pointer of EFI_INPUT_KEY.
@retval EFI_SUCCESS Successfully register the continue key option.
@retval EFI_ALREADY_STARTED The continue key option is already registered.
**/
EFI_STATUS
EFIAPI
EfiBootManagerRegisterContinueKeyOption (
IN UINT32 Modifier,
...
);
/**
Try to boot the boot option triggered by hot key.
**/
VOID
EFIAPI
EfiBootManagerHotkeyBoot (
VOID
);
//
// Boot Manager boot library functions.
//
/**
The function creates boot options for all possible bootable medias in the following order:
1. Removable BlockIo - The boot option only points to the removable media
device, like USB key, DVD, Floppy etc.
2. Fixed BlockIo - The boot option only points to a Fixed blockIo device,
like HardDisk.
3. Non-BlockIo SimpleFileSystem - The boot option points to a device supporting
SimpleFileSystem Protocol, but not supporting BlockIo
protocol.
4. LoadFile - The boot option points to the media supporting
LoadFile protocol.
Reference: UEFI Spec chapter 3.3 Boot Option Variables Default Boot Behavior
The function won't delete the boot option not added by itself.
**/
VOID
EFIAPI
EfiBootManagerRefreshAllBootOption (
VOID
);
/**
Attempt to boot the EFI boot option. This routine sets L"BootCurent" and
signals the EFI ready to boot event. If the device path for the option starts
with a BBS device path a legacy boot is attempted. Short form device paths are
also supported via this rountine. A device path starting with
MEDIA_HARDDRIVE_DP, MSG_USB_WWID_DP, MSG_USB_CLASS_DP gets expaned out
to find the first device that matches. If the BootOption Device Path
fails the removable media boot algorithm is attempted (\EFI\BOOTIA32.EFI,
\EFI\BOOTX64.EFI,... only one file type is tried per processor type)
@param BootOption Boot Option to try and boot.
On return, BootOption->Status contains the boot status:
EFI_SUCCESS BootOption was booted
EFI_UNSUPPORTED BootOption isn't supported.
EFI_NOT_FOUND The BootOption was not found on the system
Others BootOption failed with this error status
**/
VOID
EFIAPI
EfiBootManagerBoot (
IN EFI_BOOT_MANAGER_LOAD_OPTION *BootOption
);
/**
Return the boot option corresponding to the Boot Manager Menu.
It may automatically create one if the boot option hasn't been created yet.
@param BootOption Return the Boot Manager Menu.
@retval EFI_SUCCESS The Boot Manager Menu is successfully returned.
@retval EFI_NOT_FOUND The Boot Manager Menu cannot be found.
@retval others Return status of gRT->SetVariable (). BootOption still points
to the Boot Manager Menu even the Status is not EFI_SUCCESS
and EFI_NOT_FOUND.
**/
EFI_STATUS
EFIAPI
EfiBootManagerGetBootManagerMenu (
EFI_BOOT_MANAGER_LOAD_OPTION *BootOption
);
/**
Get the next possible full path pointing to the load option.
The routine doesn't guarantee the returned full path points to an existing
file, and it also doesn't guarantee the existing file is a valid load option.
BmGetNextLoadOptionBuffer() guarantees.
@param FilePath The device path pointing to a load option.
It could be a short-form device path.
@param FullPath The full path returned by the routine in last call.
Set to NULL in first call.
@return The next possible full path pointing to the load option.
Caller is responsible to free the memory.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
EfiBootManagerGetNextLoadOptionDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
IN EFI_DEVICE_PATH_PROTOCOL *FullPath
);
/**
Get the load option by its device path.
@param FilePath The device path pointing to a load option.
It could be a short-form device path.
@param FullPath Return the full device path of the load option after
short-form device path expanding.
Caller is responsible to free it.
@param FileSize Return the load option size.
@return The load option buffer. Caller is responsible to free the memory.
**/
VOID *
EFIAPI
EfiBootManagerGetLoadOptionBuffer (
IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
OUT EFI_DEVICE_PATH_PROTOCOL **FullPath,
OUT UINTN *FileSize
);
/**
The function enumerates all the legacy boot options, creates them and
registers them in the BootOrder variable.
**/
typedef
VOID
(EFIAPI *EFI_BOOT_MANAGER_REFRESH_LEGACY_BOOT_OPTION) (
VOID
);
/**
The function boots a legacy boot option.
**/
typedef
VOID
(EFIAPI *EFI_BOOT_MANAGER_LEGACY_BOOT) (
IN EFI_BOOT_MANAGER_LOAD_OPTION *BootOption
);
/**
The function registers the legacy boot support capabilities.
@param RefreshLegacyBootOption The function pointer to create all the legacy boot options.
@param LegacyBoot The function pointer to boot the legacy boot option.
**/
VOID
EFIAPI
EfiBootManagerRegisterLegacyBootSupport (
EFI_BOOT_MANAGER_REFRESH_LEGACY_BOOT_OPTION RefreshLegacyBootOption,
EFI_BOOT_MANAGER_LEGACY_BOOT LegacyBoot
);
/**
Return the platform provided boot option description for the controller.
@param Handle Controller handle.
@param DefaultDescription Default boot description provided by core.
@return The callee allocated description string
or NULL if the handler wants to use DefaultDescription.
**/
typedef
CHAR16 *
(EFIAPI *EFI_BOOT_MANAGER_BOOT_DESCRIPTION_HANDLER) (
IN EFI_HANDLE Handle,
IN CONST CHAR16 *DefaultDescription
);
/**
Register the platform provided boot description handler.
@param Handler The platform provided boot description handler
@retval EFI_SUCCESS The handler was registered successfully.
@retval EFI_ALREADY_STARTED The handler was already registered.
@retval EFI_OUT_OF_RESOURCES There is not enough resource to perform the registration.
**/
EFI_STATUS
EFIAPI
EfiBootManagerRegisterBootDescriptionHandler (
IN EFI_BOOT_MANAGER_BOOT_DESCRIPTION_HANDLER Handler
);
//
// Boot Manager connect and disconnect library functions
//
/**
This function will connect all the system driver to controller
first, and then special connect the default console, this make
sure all the system controller available and the platform default
console connected.
**/
VOID
EFIAPI
EfiBootManagerConnectAll (
VOID
);
/**
This function will create all handles associate with every device
path node. If the handle associate with one device path node can not
be created successfully, then still give chance to do the dispatch,
which load the missing drivers if possible.
@param DevicePathToConnect The device path which will be connected, it can be
a multi-instance device path
@param MatchingHandle Return the controller handle closest to the DevicePathToConnect
@retval EFI_SUCCESS All handles associate with every device path node
have been created.
@retval EFI_OUT_OF_RESOURCES There is no resource to create new handles.
@retval EFI_NOT_FOUND Create the handle associate with one device path
node failed.
@retval EFI_SECURITY_VIOLATION The user has no permission to start UEFI device
drivers on the DevicePath.
**/
EFI_STATUS
EFIAPI
EfiBootManagerConnectDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePathToConnect,
OUT EFI_HANDLE *MatchingHandle OPTIONAL
);
/**
This function will disconnect all current system handles.
gBS->DisconnectController() is invoked for each handle exists in system handle buffer.
If handle is a bus type handle, all childrens also are disconnected recursively by
gBS->DisconnectController().
**/
VOID
EFIAPI
EfiBootManagerDisconnectAll (
VOID
);
//
// Boot Manager console library functions
//
typedef enum {
ConIn,
ConOut,
ErrOut,
ConInDev,
ConOutDev,
ErrOutDev,
ConsoleTypeMax
} CONSOLE_TYPE;
/**
This function will connect all the console devices base on the console
device variable ConIn, ConOut and ErrOut.
@retval EFI_DEVICE_ERROR All the consoles were not connected due to an error.
@retval EFI_SUCCESS Success connect any one instance of the console
device path base on the variable ConVarName.
**/
EFI_STATUS
EFIAPI
EfiBootManagerConnectAllDefaultConsoles (
VOID
);
/**
This function updates the console variable based on ConVarName. It can
add or remove one specific console device path from the variable
@param ConsoleType ConIn, ConOut, ErrOut, ConInDev, ConOutDev or ErrOutDev.
@param CustomizedConDevicePath The console device path to be added to
the console variable. Cannot be multi-instance.
@param ExclusiveDevicePath The console device path to be removed
from the console variable. Cannot be multi-instance.
@retval EFI_UNSUPPORTED The added device path is the same as a removed one.
@retval EFI_SUCCESS Successfully added or removed the device path from the
console variable.
**/
EFI_STATUS
EFIAPI
EfiBootManagerUpdateConsoleVariable (
IN CONSOLE_TYPE ConsoleType,
IN EFI_DEVICE_PATH_PROTOCOL *CustomizedConDevicePath,
IN EFI_DEVICE_PATH_PROTOCOL *ExclusiveDevicePath
);
/**
Connect the console device base on the variable ConVarName, if
device path of the ConVarName is multi-instance device path, if
anyone of the instances is connected success, then this function
will return success.
@param ConsoleType ConIn, ConOut or ErrOut.
@retval EFI_NOT_FOUND There is not any console devices connected
success
@retval EFI_SUCCESS Success connect any one instance of the console
device path base on the variable ConVarName.
**/
EFI_STATUS
EFIAPI
EfiBootManagerConnectConsoleVariable (
IN CONSOLE_TYPE ConsoleType
);
/**
Query all the children of VideoController and return the device paths of all the
children that support GraphicsOutput protocol.
@param VideoController PCI handle of video controller.
@return Device paths of all the children that support GraphicsOutput protocol.
**/
EFI_DEVICE_PATH_PROTOCOL *
EFIAPI
EfiBootManagerGetGopDevicePath (
IN EFI_HANDLE VideoController
);
/**
Connect the platform active active video controller.
@param VideoController PCI handle of video controller.
@retval EFI_NOT_FOUND There is no active video controller.
@retval EFI_SUCCESS The video controller is connected.
**/
EFI_STATUS
EFIAPI
EfiBootManagerConnectVideoController (
EFI_HANDLE VideoController OPTIONAL
);
//
// Boot Manager driver health library functions.
//
typedef struct {
EFI_DRIVER_HEALTH_PROTOCOL *DriverHealth;
///
/// Driver relative handles
///
EFI_HANDLE DriverHealthHandle;
EFI_HANDLE ControllerHandle;
EFI_HANDLE ChildHandle;
///
/// Driver health messages of the specify Driver
///
EFI_DRIVER_HEALTH_HII_MESSAGE *MessageList;
///
/// HII relative handles
///
EFI_HII_HANDLE HiiHandle;
///
/// Driver Health status
///
EFI_DRIVER_HEALTH_STATUS HealthStatus;
} EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO;
/**
Return all the Driver Health information.
When the cumulative health status of all the controllers managed by the
driver who produces the EFI_DRIVER_HEALTH_PROTOCOL is healthy, only one
EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO entry is created for such
EFI_DRIVER_HEALTH_PROTOCOL instance.
Otherwise, every controller creates one EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO
entry. Additionally every child controller creates one
EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO entry if the driver is a bus driver.
@param Count Return the count of the Driver Health information.
@retval NULL No Driver Health information is returned.
@retval !NULL Pointer to the Driver Health information array.
**/
EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO *
EFIAPI
EfiBootManagerGetDriverHealthInfo (
UINTN *Count
);
/**
Free the Driver Health information array.
@param DriverHealthInfo Pointer to array of the Driver Health information.
@param Count Count of the array.
@retval EFI_SUCCESS The array is freed.
@retval EFI_INVALID_PARAMETER The array is NULL.
**/
EFI_STATUS
EFIAPI
EfiBootManagerFreeDriverHealthInfo (
EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO *DriverHealthInfo,
UINTN Count
);
/**
Process (load and execute) the load option.
@param LoadOption Pointer to the load option.
@retval EFI_INVALID_PARAMETER The load option type is invalid,
or the load option file path doesn't point to a valid file.
@retval EFI_UNSUPPORTED The load option type is of LoadOptionTypeBoot.
@retval EFI_SUCCESS The load option is inactive, or successfully loaded and executed.
**/
EFI_STATUS
EFIAPI
EfiBootManagerProcessLoadOption (
EFI_BOOT_MANAGER_LOAD_OPTION *LoadOption
);
/**
Check whether the VariableName is a valid load option variable name
and return the load option type and option number.
@param VariableName The name of the load option variable.
@param OptionType Return the load option type.
@param OptionNumber Return the load option number.
@retval TRUE The variable name is valid; The load option type and
load option number are returned.
@retval FALSE The variable name is NOT valid.
**/
BOOLEAN
EFIAPI
EfiBootManagerIsValidLoadOptionVariableName (
IN CHAR16 *VariableName,
OUT EFI_BOOT_MANAGER_LOAD_OPTION_TYPE *OptionType OPTIONAL,
OUT UINT16 *OptionNumber OPTIONAL
);
/**
Dispatch the deferred images that are returned from all DeferredImageLoad instances.
@retval EFI_SUCCESS At least one deferred image is loaded successfully and started.
@retval EFI_NOT_FOUND There is no deferred image.
@retval EFI_ACCESS_DENIED There are deferred images but all of them are failed to load.
**/
EFI_STATUS
EFIAPI
EfiBootManagerDispatchDeferredImages (
VOID
);
#endif