MdeModulePkg/Include/Library/UefiBootManagerLib.h

   1 /** @file
   2   Provide Boot Manager related library APIs.
   3
   4 Copyright (c) 2011 - 2018, 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
  10
  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.
  13
  14 **/
  15
  16
  17 #ifndef _UEFI_BOOT_MANAGER_LIB_H_
  18 #define _UEFI_BOOT_MANAGER_LIB_H_
  19
  20 #include <Protocol/DriverHealth.h>
  21 #include <Library/SortLib.h>
  22
  23 //
  24 // Boot Manager load option library functions.
  25 //
  26
  27 //
  28 // Load Option Type
  29 //
  30 typedef enum {
  31   LoadOptionTypeDriver,
  32   LoadOptionTypeSysPrep,
  33   LoadOptionTypeBoot,
  34   LoadOptionTypePlatformRecovery,
  35   LoadOptionTypeMax
  36 } EFI_BOOT_MANAGER_LOAD_OPTION_TYPE;
  37
  38 typedef enum {
  39   LoadOptionNumberMax = 0x10000,
  40   LoadOptionNumberUnassigned = LoadOptionNumberMax
  41 } EFI_BOOT_MANAGER_LOAD_OPTION_NUMBER;
  42
  43 //
  44 // Common structure definition for DriverOption and BootOption
  45 //
  46 typedef struct {
  47   //
  48   // Data read from UEFI NV variables
  49   //
  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
  57   EFI_GUID                          VendorGuid;
  58
  59   //
  60   // Used at runtime
  61   //
  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;
  66
  67 /**
  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.
  71
  72   @param  LoadOptionCount   Returns number of entries in the array.
  73   @param  LoadOptionType    The type of the load option.
  74
  75   @retval NULL  No load options exist.
  76   @retval !NULL Array of load option entries.
  77
  78 **/
  79 EFI_BOOT_MANAGER_LOAD_OPTION *
  80 EFIAPI
  81 EfiBootManagerGetLoadOptions (
  82   OUT UINTN                            *LoadOptionCount,
  83   IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE LoadOptionType
  84   );
  85
  86 /**
  87   Free an array of load options returned from EfiBootManagerGetLoadOptions().
  88
  89   @param  LoadOptions      Pointer to the array of load options to free.
  90   @param  LoadOptionCount  Number of array entries in LoadOptions.
  91
  92   @return EFI_SUCCESS           LoadOptions was freed.
  93   @return EFI_INVALID_PARAMETER LoadOptions is NULL.
  94 **/
  95 EFI_STATUS
  96 EFIAPI
  97 EfiBootManagerFreeLoadOptions (
  98   IN  EFI_BOOT_MANAGER_LOAD_OPTION  *LoadOptions,
  99   IN  UINTN                         LoadOptionCount
 100   );
 101
 102 /**
 103   Initialize a load option.
 104
 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.
 113
 114   @retval EFI_SUCCESS           The load option was initialized successfully.
 115   @retval EFI_INVALID_PARAMETER Option, Description or FilePath is NULL.
 116 **/
 117 EFI_STATUS
 118 EFIAPI
 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
 128   );
 129
 130 /**
 131   Free a load option created by EfiBootManagerInitializeLoadOption()
 132   or EfiBootManagerVariableToLoadOption().
 133
 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.
 138
 139 **/
 140 EFI_STATUS
 141 EFIAPI
 142 EfiBootManagerFreeLoadOption (
 143   IN  EFI_BOOT_MANAGER_LOAD_OPTION  *LoadOption
 144   );
 145
 146 /**
 147   Initialize the load option from the VariableName.
 148
 149   @param  VariableName          EFI Variable name which could be Boot#### or
 150                                 Driver####
 151   @param  LoadOption            Pointer to the load option to be initialized
 152
 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.
 156 **/
 157 EFI_STATUS
 158 EFIAPI
 159 EfiBootManagerVariableToLoadOption (
 160   IN CHAR16                           *VariableName,
 161   IN OUT EFI_BOOT_MANAGER_LOAD_OPTION *LoadOption
 162   );
 163
 164 /**
 165   Create the Boot#### or Driver#### variable from the load option.
 166
 167   @param  LoadOption      Pointer to the load option.
 168
 169   @retval EFI_SUCCESS     The variable was created.
 170   @retval Others          Error status returned by RT->SetVariable.
 171 **/
 172 EFI_STATUS
 173 EFIAPI
 174 EfiBootManagerLoadOptionToVariable (
 175   IN CONST EFI_BOOT_MANAGER_LOAD_OPTION     *LoadOption
 176   );
 177
 178 /**
 179   This function will register the new Boot####, Driver#### or SysPrep#### option.
 180   After the *#### is updated, the *Order will also be updated.
 181
 182   @param  Option            Pointer to load option to add. If on input
 183                             Option->OptionNumber is LoadOptionNumberUnassigned,
 184                             then on output Option->OptionNumber is updated to
 185                             the number of the new Boot####,
 186                             Driver#### or SysPrep#### option.
 187   @param  Position          Position of the new load option to put in the ****Order variable.
 188
 189   @retval EFI_SUCCESS           The *#### have been successfully registered.
 190   @retval EFI_INVALID_PARAMETER The option number exceeds 0xFFFF.
 191   @retval EFI_ALREADY_STARTED   The option number of Option is being used already.
 192                                 Note: this API only adds new load option, no replacement support.
 193   @retval EFI_OUT_OF_RESOURCES  There is no free option number that can be used when the
 194                                 option number specified in the Option is LoadOptionNumberUnassigned.
 195   @return                       Status codes of gRT->SetVariable ().
 196
 197 **/
 198 EFI_STATUS
 199 EFIAPI
 200 EfiBootManagerAddLoadOptionVariable (
 201   IN OUT EFI_BOOT_MANAGER_LOAD_OPTION *Option,
 202   IN     UINTN                        Position
 203   );
 204
 205 /**
 206   Delete the load option according to the OptionNumber and OptionType.
 207
 208   Only the BootOrder/DriverOrder is updated to remove the reference of the OptionNumber.
 209
 210   @param  OptionNumber        Option number of the load option.
 211   @param  OptionType          Type of the load option.
 212
 213   @retval EFI_NOT_FOUND       The load option cannot be found.
 214   @retval EFI_SUCCESS         The load option was deleted.
 215 **/
 216 EFI_STATUS
 217 EFIAPI
 218 EfiBootManagerDeleteLoadOptionVariable (
 219   IN UINTN                              OptionNumber,
 220   IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE  OptionType
 221   );
 222
 223 /**
 224   Sort the load options. The DriverOrder/BootOrder variables will be re-created to
 225   reflect the new order.
 226
 227   @param OptionType        The type of the load option.
 228   @param CompareFunction   The comparator function pointer.
 229 **/
 230 VOID
 231 EFIAPI
 232 EfiBootManagerSortLoadOptionVariable (
 233   IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE OptionType,
 234   IN SORT_COMPARE                      CompareFunction
 235   );
 236
 237 /**
 238   Return the index of the load option in the load option array.
 239
 240   The function consider two load options are equal when the
 241   OptionType, Attributes, Description, FilePath and OptionalData are equal.
 242
 243   @param Key    Pointer to the load option to be found.
 244   @param Array  Pointer to the array of load options to be found.
 245   @param Count  Number of entries in the Array.
 246
 247   @retval -1          Key wasn't found in the Array.
 248   @retval 0 ~ Count-1 The index of the Key in the Array.
 249 **/
 250 INTN
 251 EFIAPI
 252 EfiBootManagerFindLoadOption (
 253   IN CONST EFI_BOOT_MANAGER_LOAD_OPTION *Key,
 254   IN CONST EFI_BOOT_MANAGER_LOAD_OPTION *Array,
 255   IN UINTN                              Count
 256   );
 257
 258 //
 259 // Boot Manager hot key library functions.
 260 //
 261
 262 #pragma pack(1)
 263 ///
 264 /// EFI Key Option.
 265 ///
 266 typedef struct {
 267   ///
 268   /// Specifies options about how the key will be processed.
 269   ///
 270   EFI_BOOT_KEY_DATA  KeyData;
 271   ///
 272   /// The CRC-32 which should match the CRC-32 of the entire EFI_LOAD_OPTION to
 273   /// which BootOption refers. If the CRC-32s do not match this value, then this key
 274   /// option is ignored.
 275   ///
 276   UINT32             BootOptionCrc;
 277   ///
 278   /// The Boot#### option which will be invoked if this key is pressed and the boot option
 279   /// is active (LOAD_OPTION_ACTIVE is set).
 280   ///
 281   UINT16             BootOption;
 282   ///
 283   /// The key codes to compare against those returned by the
 284   /// EFI_SIMPLE_TEXT_INPUT and EFI_SIMPLE_TEXT_INPUT_EX protocols.
 285   /// The number of key codes (0-3) is specified by the EFI_KEY_CODE_COUNT field in KeyOptions.
 286   ///
 287   EFI_INPUT_KEY      Keys[3];
 288   UINT16             OptionNumber;
 289 } EFI_BOOT_MANAGER_KEY_OPTION;
 290 #pragma pack()
 291
 292 /**
 293   Start the hot key service so that the key press can trigger the boot option.
 294
 295   @param HotkeyTriggered  Return the waitable event and it will be signaled
 296                           when a valid hot key is pressed.
 297
 298   @retval EFI_SUCCESS     The hot key service is started.
 299 **/
 300 EFI_STATUS
 301 EFIAPI
 302 EfiBootManagerStartHotkeyService (
 303   IN EFI_EVENT      *HotkeyTriggered
 304   );
 305
 306 //
 307 // Modifier for EfiBootManagerAddKeyOptionVariable and EfiBootManagerDeleteKeyOptionVariable
 308 //
 309 #define EFI_BOOT_MANAGER_SHIFT_PRESSED    0x00000001
 310 #define EFI_BOOT_MANAGER_CONTROL_PRESSED  0x00000002
 311 #define EFI_BOOT_MANAGER_ALT_PRESSED      0x00000004
 312 #define EFI_BOOT_MANAGER_LOGO_PRESSED     0x00000008
 313 #define EFI_BOOT_MANAGER_MENU_KEY_PRESSED 0x00000010
 314 #define EFI_BOOT_MANAGER_SYS_REQ_PRESSED  0x00000020
 315
 316 /**
 317   Add the key option.
 318   It adds the key option variable and the key option takes affect immediately.
 319
 320   @param AddedOption      Return the added key option.
 321   @param BootOptionNumber The boot option number for the key option.
 322   @param Modifier         Key shift state.
 323   @param ...              Parameter list of pointer of EFI_INPUT_KEY.
 324
 325   @retval EFI_SUCCESS         The key option is added.
 326   @retval EFI_ALREADY_STARTED The hot key is already used by certain key option.
 327 **/
 328 EFI_STATUS
 329 EFIAPI
 330 EfiBootManagerAddKeyOptionVariable (
 331   OUT EFI_BOOT_MANAGER_KEY_OPTION *AddedOption,   OPTIONAL
 332   IN UINT16                       BootOptionNumber,
 333   IN UINT32                       Modifier,
 334   ...
 335   );
 336
 337 /**
 338   Delete the Key Option variable and unregister the hot key
 339
 340   @param DeletedOption  Return the deleted key options.
 341   @param Modifier       Key shift state.
 342   @param ...            Parameter list of pointer of EFI_INPUT_KEY.
 343
 344   @retval EFI_SUCCESS   The key option is deleted.
 345   @retval EFI_NOT_FOUND The key option cannot be found.
 346 **/
 347 EFI_STATUS
 348 EFIAPI
 349 EfiBootManagerDeleteKeyOptionVariable (
 350   IN EFI_BOOT_MANAGER_KEY_OPTION *DeletedOption, OPTIONAL
 351   IN UINT32                      Modifier,
 352   ...
 353   );
 354
 355 /**
 356   Register the key option to exit the waiting of the Boot Manager timeout.
 357   Platform should ensure that the continue key option isn't conflict with
 358   other boot key options.
 359
 360   @param Modifier     Key shift state.
 361   @param  ...         Parameter list of pointer of EFI_INPUT_KEY.
 362
 363   @retval EFI_SUCCESS         Successfully register the continue key option.
 364   @retval EFI_ALREADY_STARTED The continue key option is already registered.
 365 **/
 366 EFI_STATUS
 367 EFIAPI
 368 EfiBootManagerRegisterContinueKeyOption (
 369   IN UINT32           Modifier,
 370   ...
 371   );
 372
 373 /**
 374   Try to boot the boot option triggered by hot key.
 375 **/
 376 VOID
 377 EFIAPI
 378 EfiBootManagerHotkeyBoot (
 379   VOID
 380   );
 381 //
 382 // Boot Manager boot library functions.
 383 //
 384
 385 /**
 386   The function creates boot options for all possible bootable medias in the following order:
 387   1. Removable BlockIo            - The boot option only points to the removable media
 388                                     device, like USB key, DVD, Floppy etc.
 389   2. Fixed BlockIo                - The boot option only points to a Fixed blockIo device,
 390                                     like HardDisk.
 391   3. Non-BlockIo SimpleFileSystem - The boot option points to a device supporting
 392                                     SimpleFileSystem Protocol, but not supporting BlockIo
 393                                     protocol.
 394   4. LoadFile                     - The boot option points to the media supporting
 395                                     LoadFile protocol.
 396   Reference: UEFI Spec chapter 3.3 Boot Option Variables Default Boot Behavior
 397
 398   The function won't delete the boot option not added by itself.
 399 **/
 400 VOID
 401 EFIAPI
 402 EfiBootManagerRefreshAllBootOption (
 403   VOID
 404   );
 405
 406 /**
 407   Attempt to boot the EFI boot option. This routine sets L"BootCurent" and
 408   signals the EFI ready to boot event. If the device path for the option starts
 409   with a BBS device path a legacy boot is attempted. Short form device paths are
 410   also supported via this rountine. A device path starting with
 411   MEDIA_HARDDRIVE_DP, MSG_USB_WWID_DP, MSG_USB_CLASS_DP gets expaned out
 412   to find the first device that matches. If the BootOption Device Path
 413   fails the removable media boot algorithm is attempted (\EFI\BOOTIA32.EFI,
 414   \EFI\BOOTX64.EFI,... only one file type is tried per processor type)
 415
 416   @param  BootOption    Boot Option to try and boot.
 417                         On return, BootOption->Status contains the boot status:
 418                         EFI_SUCCESS     BootOption was booted
 419                         EFI_UNSUPPORTED BootOption isn't supported.
 420                         EFI_NOT_FOUND   The BootOption was not found on the system
 421                         Others          BootOption failed with this error status
 422
 423 **/
 424 VOID
 425 EFIAPI
 426 EfiBootManagerBoot (
 427   IN  EFI_BOOT_MANAGER_LOAD_OPTION  *BootOption
 428   );
 429
 430 /**
 431   Return the boot option corresponding to the Boot Manager Menu.
 432   It may automatically create one if the boot option hasn't been created yet.
 433
 434   @param BootOption    Return the Boot Manager Menu.
 435
 436   @retval EFI_SUCCESS   The Boot Manager Menu is successfully returned.
 437   @retval EFI_NOT_FOUND The Boot Manager Menu cannot be found.
 438   @retval others        Return status of gRT->SetVariable (). BootOption still points
 439                         to the Boot Manager Menu even the Status is not EFI_SUCCESS
 440                         and EFI_NOT_FOUND.
 441 **/
 442 EFI_STATUS
 443 EFIAPI
 444 EfiBootManagerGetBootManagerMenu (
 445   EFI_BOOT_MANAGER_LOAD_OPTION *BootOption
 446   );
 447
 448
 449 /**
 450   Get the load option by its device path.
 451
 452   @param FilePath  The device path pointing to a load option.
 453                    It could be a short-form device path.
 454   @param FullPath  Return the full device path of the load option after
 455                    short-form device path expanding.
 456                    Caller is responsible to free it.
 457   @param FileSize  Return the load option size.
 458
 459   @return The load option buffer. Caller is responsible to free the memory.
 460 **/
 461 VOID *
 462 EFIAPI
 463 EfiBootManagerGetLoadOptionBuffer (
 464   IN  EFI_DEVICE_PATH_PROTOCOL          *FilePath,
 465   OUT EFI_DEVICE_PATH_PROTOCOL          **FullPath,
 466   OUT UINTN                             *FileSize
 467   );
 468
 469 /**
 470   The function enumerates all the legacy boot options, creates them and
 471   registers them in the BootOrder variable.
 472 **/
 473 typedef
 474 VOID
 475 (EFIAPI *EFI_BOOT_MANAGER_REFRESH_LEGACY_BOOT_OPTION) (
 476   VOID
 477   );
 478
 479 /**
 480   The function boots a legacy boot option.
 481 **/
 482 typedef
 483 VOID
 484 (EFIAPI *EFI_BOOT_MANAGER_LEGACY_BOOT) (
 485   IN  EFI_BOOT_MANAGER_LOAD_OPTION  *BootOption
 486   );
 487
 488 /**
 489   The function registers the legacy boot support capabilities.
 490
 491   @param RefreshLegacyBootOption The function pointer to create all the legacy boot options.
 492   @param LegacyBoot              The function pointer to boot the legacy boot option.
 493 **/
 494 VOID
 495 EFIAPI
 496 EfiBootManagerRegisterLegacyBootSupport (
 497   EFI_BOOT_MANAGER_REFRESH_LEGACY_BOOT_OPTION   RefreshLegacyBootOption,
 498   EFI_BOOT_MANAGER_LEGACY_BOOT                  LegacyBoot
 499   );
 500
 501 /**
 502   Return the platform provided boot option description for the controller.
 503
 504   @param Handle                Controller handle.
 505   @param DefaultDescription    Default boot description provided by core.
 506
 507   @return  The callee allocated description string
 508            or NULL if the handler wants to use DefaultDescription.
 509 **/
 510 typedef
 511 CHAR16 *
 512 (EFIAPI *EFI_BOOT_MANAGER_BOOT_DESCRIPTION_HANDLER) (
 513   IN EFI_HANDLE                  Handle,
 514   IN CONST CHAR16                *DefaultDescription
 515   );
 516
 517 /**
 518   Register the platform provided boot description handler.
 519
 520   @param Handler  The platform provided boot description handler
 521
 522   @retval EFI_SUCCESS          The handler was registered successfully.
 523   @retval EFI_ALREADY_STARTED  The handler was already registered.
 524   @retval EFI_OUT_OF_RESOURCES There is not enough resource to perform the registration.
 525 **/
 526 EFI_STATUS
 527 EFIAPI
 528 EfiBootManagerRegisterBootDescriptionHandler (
 529   IN EFI_BOOT_MANAGER_BOOT_DESCRIPTION_HANDLER  Handler
 530   );
 531
 532 //
 533 // Boot Manager connect and disconnect library functions
 534 //
 535
 536 /**
 537   This function will connect all the system driver to controller
 538   first, and then special connect the default console, this make
 539   sure all the system controller available and the platform default
 540   console connected.
 541 **/
 542 VOID
 543 EFIAPI
 544 EfiBootManagerConnectAll (
 545   VOID
 546   );
 547
 548 /**
 549   This function will create all handles associate with every device
 550   path node. If the handle associate with one device path node can not
 551   be created successfully, then still give chance to do the dispatch,
 552   which load the missing drivers if possible.
 553
 554   @param  DevicePathToConnect   The device path which will be connected, it can be
 555                                 a multi-instance device path
 556   @param  MatchingHandle        Return the controller handle closest to the DevicePathToConnect
 557
 558   @retval EFI_SUCCESS            All handles associate with every device path node
 559                                  have been created.
 560   @retval EFI_OUT_OF_RESOURCES   There is no resource to create new handles.
 561   @retval EFI_NOT_FOUND          Create the handle associate with one device path
 562                                  node failed.
 563   @retval EFI_SECURITY_VIOLATION The user has no permission to start UEFI device
 564                                  drivers on the DevicePath.
 565 **/
 566 EFI_STATUS
 567 EFIAPI
 568 EfiBootManagerConnectDevicePath (
 569   IN  EFI_DEVICE_PATH_PROTOCOL  *DevicePathToConnect,
 570   OUT EFI_HANDLE                *MatchingHandle          OPTIONAL
 571   );
 572
 573 /**
 574   This function will disconnect all current system handles.
 575
 576   gBS->DisconnectController() is invoked for each handle exists in system handle buffer.
 577   If handle is a bus type handle, all childrens also are disconnected recursively by
 578   gBS->DisconnectController().
 579 **/
 580 VOID
 581 EFIAPI
 582 EfiBootManagerDisconnectAll (
 583   VOID
 584   );
 585
 586
 587 //
 588 // Boot Manager console library functions
 589 //
 590
 591 typedef enum {
 592   ConIn,
 593   ConOut,
 594   ErrOut,
 595   ConInDev,
 596   ConOutDev,
 597   ErrOutDev,
 598   ConsoleTypeMax
 599 } CONSOLE_TYPE;
 600
 601 /**
 602   This function will connect all the console devices base on the console
 603   device variable ConIn, ConOut and ErrOut.
 604
 605   @retval EFI_DEVICE_ERROR         All the consoles were not connected due to an error.
 606   @retval EFI_SUCCESS              Success connect any one instance of the console
 607                                    device path base on the variable ConVarName.
 608 **/
 609 EFI_STATUS
 610 EFIAPI
 611 EfiBootManagerConnectAllDefaultConsoles (
 612   VOID
 613   );
 614
 615 /**
 616   This function updates the console variable based on ConVarName. It can
 617   add or remove one specific console device path from the variable
 618
 619   @param  ConsoleType              ConIn, ConOut, ErrOut, ConInDev, ConOutDev or ErrOutDev.
 620   @param  CustomizedConDevicePath  The console device path to be added to
 621                                    the console variable. Cannot be multi-instance.
 622   @param  ExclusiveDevicePath      The console device path to be removed
 623                                    from the console variable. Cannot be multi-instance.
 624
 625   @retval EFI_UNSUPPORTED          The added device path is the same as a removed one.
 626   @retval EFI_SUCCESS              Successfully added or removed the device path from the
 627                                    console variable.
 628
 629 **/
 630 EFI_STATUS
 631 EFIAPI
 632 EfiBootManagerUpdateConsoleVariable (
 633   IN  CONSOLE_TYPE              ConsoleType,
 634   IN  EFI_DEVICE_PATH_PROTOCOL  *CustomizedConDevicePath,
 635   IN  EFI_DEVICE_PATH_PROTOCOL  *ExclusiveDevicePath
 636   );
 637
 638 /**
 639   Connect the console device base on the variable ConVarName, if
 640   device path of the ConVarName is multi-instance device path, if
 641   anyone of the instances is connected success, then this function
 642   will return success.
 643
 644   @param  ConsoleType              ConIn, ConOut or ErrOut.
 645
 646   @retval EFI_NOT_FOUND            There is not any console devices connected
 647                                    success
 648   @retval EFI_SUCCESS              Success connect any one instance of the console
 649                                    device path base on the variable ConVarName.
 650
 651 **/
 652 EFI_STATUS
 653 EFIAPI
 654 EfiBootManagerConnectConsoleVariable (
 655   IN  CONSOLE_TYPE              ConsoleType
 656   );
 657
 658 /**
 659   Query all the children of VideoController and return the device paths of all the
 660   children that support GraphicsOutput protocol.
 661
 662   @param VideoController       PCI handle of video controller.
 663
 664   @return  Device paths of all the children that support GraphicsOutput protocol.
 665 **/
 666 EFI_DEVICE_PATH_PROTOCOL *
 667 EFIAPI
 668 EfiBootManagerGetGopDevicePath (
 669   IN  EFI_HANDLE               VideoController
 670   );
 671
 672 /**
 673   Connect the platform active active video controller.
 674
 675   @param VideoController       PCI handle of video controller.
 676
 677   @retval EFI_NOT_FOUND There is no active video controller.
 678   @retval EFI_SUCCESS   The video controller is connected.
 679 **/
 680 EFI_STATUS
 681 EFIAPI
 682 EfiBootManagerConnectVideoController (
 683   EFI_HANDLE                 VideoController  OPTIONAL
 684   );
 685
 686 //
 687 // Boot Manager driver health library functions.
 688 //
 689
 690 typedef struct {
 691   EFI_DRIVER_HEALTH_PROTOCOL      *DriverHealth;
 692
 693   ///
 694   /// Driver relative handles
 695   ///
 696   EFI_HANDLE                      DriverHealthHandle;
 697   EFI_HANDLE                      ControllerHandle;
 698   EFI_HANDLE                      ChildHandle;
 699
 700   ///
 701   /// Driver health messages of the specify Driver
 702   ///
 703   EFI_DRIVER_HEALTH_HII_MESSAGE   *MessageList;
 704
 705   ///
 706   /// HII relative handles
 707   ///
 708   EFI_HII_HANDLE                  HiiHandle;
 709
 710   ///
 711   /// Driver Health status
 712   ///
 713   EFI_DRIVER_HEALTH_STATUS        HealthStatus;
 714 } EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO;
 715
 716 /**
 717   Return all the Driver Health information.
 718
 719   When the cumulative health status of all the controllers managed by the
 720   driver who produces the EFI_DRIVER_HEALTH_PROTOCOL is healthy, only one
 721   EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO entry is created for such
 722   EFI_DRIVER_HEALTH_PROTOCOL instance.
 723   Otherwise, every controller creates one EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO
 724   entry. Additionally every child controller creates one
 725   EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO entry if the driver is a bus driver.
 726
 727   @param Count      Return the count of the Driver Health information.
 728
 729   @retval NULL      No Driver Health information is returned.
 730   @retval !NULL     Pointer to the Driver Health information array.
 731 **/
 732 EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO *
 733 EFIAPI
 734 EfiBootManagerGetDriverHealthInfo (
 735   UINTN    *Count
 736   );
 737
 738 /**
 739   Free the Driver Health information array.
 740
 741   @param DriverHealthInfo       Pointer to array of the Driver Health information.
 742   @param Count                  Count of the array.
 743
 744   @retval EFI_SUCCESS           The array is freed.
 745   @retval EFI_INVALID_PARAMETER The array is NULL.
 746 **/
 747 EFI_STATUS
 748 EFIAPI
 749 EfiBootManagerFreeDriverHealthInfo (
 750   EFI_BOOT_MANAGER_DRIVER_HEALTH_INFO  *DriverHealthInfo,
 751   UINTN                                Count
 752   );
 753
 754 /**
 755   Process (load and execute) the load option.
 756
 757   @param LoadOption  Pointer to the load option.
 758
 759   @retval EFI_INVALID_PARAMETER  The load option type is invalid,
 760                                  or the load option file path doesn't point to a valid file.
 761   @retval EFI_UNSUPPORTED        The load option type is of LoadOptionTypeBoot.
 762   @retval EFI_SUCCESS            The load option is inactive, or successfully loaded and executed.
 763 **/
 764 EFI_STATUS
 765 EFIAPI
 766 EfiBootManagerProcessLoadOption (
 767   EFI_BOOT_MANAGER_LOAD_OPTION       *LoadOption
 768   );
 769
 770 /**
 771   Check whether the VariableName is a valid load option variable name
 772   and return the load option type and option number.
 773
 774   @param VariableName The name of the load option variable.
 775   @param OptionType   Return the load option type.
 776   @param OptionNumber Return the load option number.
 777
 778   @retval TRUE  The variable name is valid; The load option type and
 779                 load option number are returned.
 780   @retval FALSE The variable name is NOT valid.
 781 **/
 782 BOOLEAN
 783 EFIAPI
 784 EfiBootManagerIsValidLoadOptionVariableName (
 785   IN CHAR16                             *VariableName,
 786   OUT EFI_BOOT_MANAGER_LOAD_OPTION_TYPE *OptionType   OPTIONAL,
 787   OUT UINT16                            *OptionNumber OPTIONAL
 788   );
 789
 790
 791 /**
 792   Dispatch the deferred images that are returned from all DeferredImageLoad instances.
 793
 794   @retval EFI_SUCCESS       At least one deferred image is loaded successfully and started.
 795   @retval EFI_NOT_FOUND     There is no deferred image.
 796   @retval EFI_ACCESS_DENIED There are deferred images but all of them are failed to load.
 797 **/
 798 EFI_STATUS
 799 EFIAPI
 800 EfiBootManagerDispatchDeferredImages (
 801   VOID
 802   );
 803 #endif