2 Provide Boot Manager related library APIs.
4 Copyright (c) 2011 - 2016, Intel Corporation. All rights reserved.<BR>
5 (C) Copyright 2015-2016 Hewlett Packard Enterprise Development LP<BR>
6 This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
17 #ifndef _UEFI_BOOT_MANAGER_LIB_H_
18 #define _UEFI_BOOT_MANAGER_LIB_H_
20 #include <Protocol/DriverHealth.h>
21 #include <Library/SortLib.h>
24 // Boot Manager load option library functions.
32 LoadOptionTypeSysPrep
,
34 LoadOptionTypePlatformRecovery
,
36 } EFI_BOOT_MANAGER_LOAD_OPTION_TYPE
;
39 LoadOptionNumberMax
= 0x10000,
40 LoadOptionNumberUnassigned
= LoadOptionNumberMax
41 } EFI_BOOT_MANAGER_LOAD_OPTION_NUMBER
;
44 // Common structure definition for DriverOption and BootOption
48 // Data read from UEFI NV variables
50 UINTN OptionNumber
; // #### numerical value, could be LoadOptionNumberUnassigned
51 EFI_BOOT_MANAGER_LOAD_OPTION_TYPE OptionType
; // LoadOptionTypeBoot or LoadOptionTypeDriver
52 UINT32 Attributes
; // Load Option Attributes
53 CHAR16
*Description
; // Load Option Description
54 EFI_DEVICE_PATH_PROTOCOL
*FilePath
; // Load Option Device Path
55 UINT8
*OptionalData
; // Load Option optional data to pass into image
56 UINT32 OptionalDataSize
; // Load Option size of OptionalData
62 EFI_STATUS Status
; // Status returned from boot attempt gBS->StartImage ()
63 CHAR16
*ExitData
; // Exit data returned from gBS->StartImage ()
64 UINTN ExitDataSize
; // Size of ExitData
65 } EFI_BOOT_MANAGER_LOAD_OPTION
;
68 Returns an array of load options based on the EFI variable
69 L"BootOrder"/L"DriverOrder" and the L"Boot####"/L"Driver####" variables impled by it.
70 #### is the hex value of the UINT16 in each BootOrder/DriverOrder entry.
72 @param LoadOptionCount Returns number of entries in the array.
73 @param LoadOptionType The type of the load option.
75 @retval NULL No load options exist.
76 @retval !NULL Array of load option entries.
79 EFI_BOOT_MANAGER_LOAD_OPTION
*
81 EfiBootManagerGetLoadOptions (
82 OUT UINTN
*LoadOptionCount
,
83 IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE LoadOptionType
87 Free an array of load options returned from EfiBootManagerGetLoadOptions().
89 @param LoadOptions Pointer to the array of load options to free.
90 @param LoadOptionCount Number of array entries in LoadOptions.
92 @return EFI_SUCCESS LoadOptions was freed.
93 @return EFI_INVALID_PARAMETER LoadOptions is NULL.
97 EfiBootManagerFreeLoadOptions (
98 IN EFI_BOOT_MANAGER_LOAD_OPTION
*LoadOptions
,
99 IN UINTN LoadOptionCount
103 Initialize a load option.
105 @param Option Pointer to the load option to be initialized.
106 @param OptionNumber Option number of the load option.
107 @param OptionType Type of the load option.
108 @param Attributes Attributes of the load option.
109 @param Description Description of the load option.
110 @param FilePath Device path of the load option.
111 @param OptionalData Optional data of the load option.
112 @param OptionalDataSize Size of the optional data of the load option.
114 @retval EFI_SUCCESS The load option was initialized successfully.
115 @retval EFI_INVALID_PARAMETER Option, Description or FilePath is NULL.
119 EfiBootManagerInitializeLoadOption (
120 IN OUT EFI_BOOT_MANAGER_LOAD_OPTION
*Option
,
121 IN UINTN OptionNumber
,
122 IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE OptionType
,
123 IN UINT32 Attributes
,
124 IN CHAR16
*Description
,
125 IN EFI_DEVICE_PATH_PROTOCOL
*FilePath
,
126 IN UINT8
*OptionalData
,
127 IN UINT32 OptionalDataSize
131 Free a load option created by EfiBootManagerInitializeLoadOption()
132 or EfiBootManagerVariableToLoadOption().
134 @param LoadOption Pointer to the load option to free.
135 CONCERN: Check Boot#### instead of BootOrder, optimize, spec clarify
136 @return EFI_SUCCESS LoadOption was freed.
137 @return EFI_INVALID_PARAMETER LoadOption is NULL.
142 EfiBootManagerFreeLoadOption (
143 IN EFI_BOOT_MANAGER_LOAD_OPTION
*LoadOption
147 Initialize the load option from the VariableName.
149 @param VariableName EFI Variable name which could be Boot#### or
151 @param LoadOption Pointer to the load option to be initialized
153 @retval EFI_SUCCESS The option was created
154 @retval EFI_INVALID_PARAMETER VariableName or LoadOption is NULL.
155 @retval EFI_NOT_FOUND The variable specified by VariableName cannot be found.
159 EfiBootManagerVariableToLoadOption (
160 IN CHAR16
*VariableName
,
161 IN OUT EFI_BOOT_MANAGER_LOAD_OPTION
*LoadOption
165 Create the Boot#### or Driver#### variable from the load option.
167 @param LoadOption Pointer to the load option.
169 @retval EFI_SUCCESS The variable was created.
170 @retval Others Error status returned by RT->SetVariable.
174 EfiBootManagerLoadOptionToVariable (
175 IN CONST EFI_BOOT_MANAGER_LOAD_OPTION
*LoadOption
179 This function will update the Boot####/Driver####/SysPrep#### and the
180 BootOrder/DriverOrder/SysPrepOrder to add a new load option.
182 @param Option Pointer to load option to add.
183 @param Position Position of the new load option to put in the BootOrder/DriverOrder/SysPrepOrder.
185 @retval EFI_SUCCESS The load option has been successfully added.
186 @retval Others Error status returned by RT->SetVariable.
190 EfiBootManagerAddLoadOptionVariable (
191 IN EFI_BOOT_MANAGER_LOAD_OPTION
*Option
,
196 Delete the load option according to the OptionNumber and OptionType.
198 Only the BootOrder/DriverOrder is updated to remove the reference of the OptionNumber.
200 @param OptionNumber Option number of the load option.
201 @param OptionType Type of the load option.
203 @retval EFI_NOT_FOUND The load option cannot be found.
204 @retval EFI_SUCCESS The load option was deleted.
208 EfiBootManagerDeleteLoadOptionVariable (
209 IN UINTN OptionNumber
,
210 IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE OptionType
214 Sort the load options. The DriverOrder/BootOrder variables will be re-created to
215 reflect the new order.
217 @param OptionType The type of the load option.
218 @param CompareFunction The comparator function pointer.
222 EfiBootManagerSortLoadOptionVariable (
223 IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE OptionType
,
224 IN SORT_COMPARE CompareFunction
228 Return the index of the load option in the load option array.
230 The function consider two load options are equal when the
231 OptionType, Attributes, Description, FilePath and OptionalData are equal.
233 @param Key Pointer to the load option to be found.
234 @param Array Pointer to the array of load options to be found.
235 @param Count Number of entries in the Array.
237 @retval -1 Key wasn't found in the Array.
238 @retval 0 ~ Count-1 The index of the Key in the Array.
242 EfiBootManagerFindLoadOption (
243 IN CONST EFI_BOOT_MANAGER_LOAD_OPTION
*Key
,
244 IN CONST EFI_BOOT_MANAGER_LOAD_OPTION
*Array
,
249 // Boot Manager hot key library functions.
258 /// Specifies options about how the key will be processed.
260 EFI_BOOT_KEY_DATA KeyData
;
262 /// The CRC-32 which should match the CRC-32 of the entire EFI_LOAD_OPTION to
263 /// which BootOption refers. If the CRC-32s do not match this value, then this key
264 /// option is ignored.
266 UINT32 BootOptionCrc
;
268 /// The Boot#### option which will be invoked if this key is pressed and the boot option
269 /// is active (LOAD_OPTION_ACTIVE is set).
273 /// The key codes to compare against those returned by the
274 /// EFI_SIMPLE_TEXT_INPUT and EFI_SIMPLE_TEXT_INPUT_EX protocols.
275 /// The number of key codes (0-3) is specified by the EFI_KEY_CODE_COUNT field in KeyOptions.
277 EFI_INPUT_KEY Keys
[3];
279 } EFI_BOOT_MANAGER_KEY_OPTION
;
283 Start the hot key service so that the key press can trigger the boot option.
285 @param HotkeyTriggered Return the waitable event and it will be signaled
286 when a valid hot key is pressed.
288 @retval EFI_SUCCESS The hot key service is started.
292 EfiBootManagerStartHotkeyService (
293 IN EFI_EVENT
*HotkeyTriggered
297 // Modifier for EfiBootManagerAddKeyOptionVariable and EfiBootManagerDeleteKeyOptionVariable
299 #define EFI_BOOT_MANAGER_SHIFT_PRESSED 0x00000001
300 #define EFI_BOOT_MANAGER_CONTROL_PRESSED 0x00000002
301 #define EFI_BOOT_MANAGER_ALT_PRESSED 0x00000004
302 #define EFI_BOOT_MANAGER_LOGO_PRESSED 0x00000008
303 #define EFI_BOOT_MANAGER_MENU_KEY_PRESSED 0x00000010
304 #define EFI_BOOT_MANAGER_SYS_REQ_PRESSED 0x00000020
308 It adds the key option variable and the key option takes affect immediately.
310 @param AddedOption Return the added key option.
311 @param BootOptionNumber The boot option number for the key option.
312 @param Modifier Key shift state.
313 @param ... Parameter list of pointer of EFI_INPUT_KEY.
315 @retval EFI_SUCCESS The key option is added.
316 @retval EFI_ALREADY_STARTED The hot key is already used by certain key option.
320 EfiBootManagerAddKeyOptionVariable (
321 OUT EFI_BOOT_MANAGER_KEY_OPTION
*AddedOption
, OPTIONAL
322 IN UINT16 BootOptionNumber
,
328 Delete the Key Option variable and unregister the hot key
330 @param DeletedOption Return the deleted key options.
331 @param Modifier Key shift state.
332 @param ... Parameter list of pointer of EFI_INPUT_KEY.
334 @retval EFI_SUCCESS The key option is deleted.
335 @retval EFI_NOT_FOUND The key option cannot be found.
339 EfiBootManagerDeleteKeyOptionVariable (
340 IN EFI_BOOT_MANAGER_KEY_OPTION
*DeletedOption
, OPTIONAL
346 Register the key option to exit the waiting of the Boot Manager timeout.
347 Platform should ensure that the continue key option isn't conflict with
348 other boot key options.
350 @param Modifier Key shift state.
351 @param ... Parameter list of pointer of EFI_INPUT_KEY.
353 @retval EFI_SUCCESS Successfully register the continue key option.
354 @retval EFI_ALREADY_STARTED The continue key option is already registered.
358 EfiBootManagerRegisterContinueKeyOption (
364 Try to boot the boot option triggered by hot key.
368 EfiBootManagerHotkeyBoot (
372 // Boot Manager boot library functions.
376 The function creates boot options for all possible bootable medias in the following order:
377 1. Removable BlockIo - The boot option only points to the removable media
378 device, like USB key, DVD, Floppy etc.
379 2. Fixed BlockIo - The boot option only points to a Fixed blockIo device,
381 3. Non-BlockIo SimpleFileSystem - The boot option points to a device supporting
382 SimpleFileSystem Protocol, but not supporting BlockIo
384 4. LoadFile - The boot option points to the media supporting
386 Reference: UEFI Spec chapter 3.3 Boot Option Variables Default Boot Behavior
388 The function won't delete the boot option not added by itself.
392 EfiBootManagerRefreshAllBootOption (
397 Attempt to boot the EFI boot option. This routine sets L"BootCurent" and
398 signals the EFI ready to boot event. If the device path for the option starts
399 with a BBS device path a legacy boot is attempted. Short form device paths are
400 also supported via this rountine. A device path starting with
401 MEDIA_HARDDRIVE_DP, MSG_USB_WWID_DP, MSG_USB_CLASS_DP gets expaned out
402 to find the first device that matches. If the BootOption Device Path
403 fails the removable media boot algorithm is attempted (\EFI\BOOTIA32.EFI,
404 \EFI\BOOTX64.EFI,... only one file type is tried per processor type)
406 @param BootOption Boot Option to try and boot.
407 On return, BootOption->Status contains the boot status:
408 EFI_SUCCESS BootOption was booted
409 EFI_UNSUPPORTED BootOption isn't supported.
410 EFI_NOT_FOUND The BootOption was not found on the system
411 Others BootOption failed with this error status
417 IN EFI_BOOT_MANAGER_LOAD_OPTION
*BootOption
421 Return the boot option corresponding to the Boot Manager Menu.
422 It may automatically create one if the boot option hasn't been created yet.
424 @param BootOption Return the Boot Manager Menu.
426 @retval EFI_SUCCESS The Boot Manager Menu is successfully returned.
427 @retval EFI_NOT_FOUND The Boot Manager Menu cannot be found.
428 @retval others Return status of gRT->SetVariable (). BootOption still points
429 to the Boot Manager Menu even the Status is not EFI_SUCCESS
434 EfiBootManagerGetBootManagerMenu (
435 EFI_BOOT_MANAGER_LOAD_OPTION
*BootOption
440 Get the load option by its device path.
442 @param FilePath The device path pointing to a load option.
443 It could be a short-form device path.
444 @param FullPath Return the full device path of the load option after
445 short-form device path expanding.
446 Caller is responsible to free it.
447 @param FileSize Return the load option size.
449 @return The load option buffer. Caller is responsible to free the memory.
453 EfiBootManagerGetLoadOptionBuffer (
454 IN EFI_DEVICE_PATH_PROTOCOL
*FilePath
,
455 OUT EFI_DEVICE_PATH_PROTOCOL
**FullPath
,
460 The function enumerates all the legacy boot options, creates them and
461 registers them in the BootOrder variable.
465 (EFIAPI
*EFI_BOOT_MANAGER_REFRESH_LEGACY_BOOT_OPTION
) (
470 The function boots a legacy boot option.
474 (EFIAPI
*EFI_BOOT_MANAGER_LEGACY_BOOT
) (
475 IN EFI_BOOT_MANAGER_LOAD_OPTION
*BootOption
479 The function registers the legacy boot support capabilities.
481 @param RefreshLegacyBootOption The function pointer to create all the legacy boot options.
482 @param LegacyBoot The function pointer to boot the legacy boot option.
486 EfiBootManagerRegisterLegacyBootSupport (
487 EFI_BOOT_MANAGER_REFRESH_LEGACY_BOOT_OPTION RefreshLegacyBootOption
,
488 EFI_BOOT_MANAGER_LEGACY_BOOT LegacyBoot
492 Return the platform provided boot option description for the controller.
494 @param Handle Controller handle.
495 @param DefaultDescription Default boot description provided by core.
497 @return The callee allocated description string
498 or NULL if the handler wants to use DefaultDescription.
502 (EFIAPI
*EFI_BOOT_MANAGER_BOOT_DESCRIPTION_HANDLER
) (
503 IN EFI_HANDLE Handle
,
504 IN CONST CHAR16
*DefaultDescription
508 Register the platform provided boot description handler.
510 @param Handler The platform provided boot description handler
512 @retval EFI_SUCCESS The handler was registered successfully.
513 @retval EFI_ALREADY_STARTED The handler was already registered.
514 @retval EFI_OUT_OF_RESOURCES There is not enough resource to perform the registration.
518 EfiBootManagerRegisterBootDescriptionHandler (
519 IN EFI_BOOT_MANAGER_BOOT_DESCRIPTION_HANDLER Handler
523 // Boot Manager connect and disconnect library functions
527 This function will connect all the system driver to controller
528 first, and then special connect the default console, this make
529 sure all the system controller available and the platform default
534 EfiBootManagerConnectAll (
539 This function will create all handles associate with every device
540 path node. If the handle associate with one device path node can not
541 be created successfully, then still give chance to do the dispatch,
542 which load the missing drivers if possible.
544 @param DevicePathToConnect The device path which will be connected, it can be
545 a multi-instance device path
546 @param MatchingHandle Return the controller handle closest to the DevicePathToConnect
548 @retval EFI_SUCCESS All handles associate with every device path node
550 @retval EFI_OUT_OF_RESOURCES There is no resource to create new handles.
551 @retval EFI_NOT_FOUND Create the handle associate with one device path
553 @retval EFI_SECURITY_VIOLATION The user has no permission to start UEFI device
554 drivers on the DevicePath.
558 EfiBootManagerConnectDevicePath (
559 IN EFI_DEVICE_PATH_PROTOCOL
*DevicePathToConnect
,
560 OUT EFI_HANDLE
*MatchingHandle OPTIONAL
564 This function will disconnect all current system handles.
566 gBS->DisconnectController() is invoked for each handle exists in system handle buffer.
567 If handle is a bus type handle, all childrens also are disconnected recursively by
568 gBS->DisconnectController().
572 EfiBootManagerDisconnectAll (
578 // Boot Manager console library functions
592 This function will connect all the console devices base on the console
593 device variable ConIn, ConOut and ErrOut.
595 @retval EFI_DEVICE_ERROR All the consoles were not connected due to an error.
596 @retval EFI_SUCCESS Success connect any one instance of the console
597 device path base on the variable ConVarName.
601 EfiBootManagerConnectAllDefaultConsoles (
606 This function updates the console variable based on ConVarName. It can
607 add or remove one specific console device path from the variable
609 @param ConsoleType ConIn, ConOut, ErrOut, ConInDev, ConOutDev or ErrOutDev.
610 @param CustomizedConDevicePath The console device path to be added to
611 the console variable. Cannot be multi-instance.
612 @param ExclusiveDevicePath The console device path to be removed
613 from the console variable. Cannot be multi-instance.
615 @retval EFI_UNSUPPORTED The added device path is the same as a removed one.
616 @retval EFI_SUCCESS Successfully added or removed the device path from the
622 EfiBootManagerUpdateConsoleVariable (
623 IN CONSOLE_TYPE ConsoleType
,
624 IN EFI_DEVICE_PATH_PROTOCOL
*CustomizedConDevicePath
,
625 IN EFI_DEVICE_PATH_PROTOCOL
*ExclusiveDevicePath
629 Connect the console device base on the variable ConVarName, if
630 device path of the ConVarName is multi-instance device path, if
631 anyone of the instances is connected success, then this function
634 @param ConsoleType ConIn, ConOut or ErrOut.
636 @retval EFI_NOT_FOUND There is not any console devices connected
638 @retval EFI_SUCCESS Success connect any one instance of the console
639 device path base on the variable ConVarName.
644 EfiBootManagerConnectConsoleVariable (
645 IN CONSOLE_TYPE ConsoleType
649 Query all the children of VideoController and return the device paths of all the
650 children that support GraphicsOutput protocol.
652 @param VideoController PCI handle of video controller.
654 @return Device paths of all the children that support GraphicsOutput protocol.
656 EFI_DEVICE_PATH_PROTOCOL
*
658 EfiBootManagerGetGopDevicePath (
659 IN EFI_HANDLE VideoController
663 Connect the platform active active video controller.
665 @param VideoController PCI handle of video controller.
667 @retval EFI_NOT_FOUND There is no active video controller.
668 @retval EFI_SUCCESS The video controller is connected.
672 EfiBootManagerConnectVideoController (
673 EFI_HANDLE VideoController OPTIONAL
677 // Boot Manager driver health library functions.
681 EFI_DRIVER_HEALTH_PROTOCOL
*DriverHealth
;
684 /// Driver relative handles
686 EFI_HANDLE DriverHealthHandle
;
687 EFI_HANDLE ControllerHandle
;
688 EFI_HANDLE ChildHandle
;
691 /// Driver health messages of the specify Driver
693 EFI_DRIVER_HEALTH_HII_MESSAGE
*MessageList
;
696 /// HII relative handles
698 EFI_HII_HANDLE HiiHandle
;
701 /// Driver Health status
703 EFI_DRIVER_HEALTH_STATUS HealthStatus
;
704 } EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO
;
707 Return all the Driver Health information.
709 When the cumulative health status of all the controllers managed by the
710 driver who produces the EFI_DRIVER_HEALTH_PROTOCOL is healthy, only one
711 EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO entry is created for such
712 EFI_DRIVER_HEALTH_PROTOCOL instance.
713 Otherwise, every controller creates one EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO
714 entry. Additionally every child controller creates one
715 EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO entry if the driver is a bus driver.
717 @param Count Return the count of the Driver Health information.
719 @retval NULL No Driver Health information is returned.
720 @retval !NULL Pointer to the Driver Health information array.
722 EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO
*
724 EfiBootManagerGetDriverHealthInfo (
729 Free the Driver Health information array.
731 @param DriverHealthInfo Pointer to array of the Driver Health information.
732 @param Count Count of the array.
734 @retval EFI_SUCCESS The array is freed.
735 @retval EFI_INVALID_PARAMETER The array is NULL.
739 EfiBootManagerFreeDriverHealthInfo (
740 EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO
*DriverHealthInfo
,
745 Process (load and execute) the load option.
747 @param LoadOption Pointer to the load option.
749 @retval EFI_INVALID_PARAMETER The load option type is invalid,
750 or the load option file path doesn't point to a valid file.
751 @retval EFI_UNSUPPORTED The load option type is of LoadOptionTypeBoot.
752 @retval EFI_SUCCESS The load option is inactive, or successfully loaded and executed.
756 EfiBootManagerProcessLoadOption (
757 EFI_BOOT_MANAGER_LOAD_OPTION
*LoadOption
761 Check whether the VariableName is a valid load option variable name
762 and return the load option type and option number.
764 @param VariableName The name of the load option variable.
765 @param OptionType Return the load option type.
766 @param OptionNumber Return the load option number.
768 @retval TRUE The variable name is valid; The load option type and
769 load option number are returned.
770 @retval FALSE The variable name is NOT valid.
774 EfiBootManagerIsValidLoadOptionVariableName (
775 IN CHAR16
*VariableName
,
776 OUT EFI_BOOT_MANAGER_LOAD_OPTION_TYPE
*OptionType OPTIONAL
,
777 OUT UINT16
*OptionNumber OPTIONAL
782 Dispatch the deferred images that are returned from all DeferredImageLoad instances.
784 @retval EFI_SUCCESS At least one deferred image is loaded successfully and started.
785 @retval EFI_NOT_FOUND There is no deferred image.
786 @retval EFI_ACCESS_DENIED There are deferred images but all of them are failed to load.
790 EfiBootManagerDispatchDeferredImages (