IntelFrameworkModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2Keyboard.c

   1 /** @file
   2
   3   PS/2 Keyboard driver. Routines that interacts with callers,
   4   conforming to EFI driver model
   5
   6 Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
   7 This program and the accompanying materials
   8 are licensed and made available under the terms and conditions of the BSD License
   9 which accompanies this distribution.  The full text of the license may be found at
  10 http://opensource.org/licenses/bsd-license.php
  11
  12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15 **/
  16
  17 #include "Ps2Keyboard.h"
  18
  19 //
  20 // Function prototypes
  21 //
  22 /**
  23   Test controller is a keyboard Controller.
  24
  25   @param This                 Pointer of EFI_DRIVER_BINDING_PROTOCOL
  26   @param Controller           driver's controller
  27   @param RemainingDevicePath  children device path
  28
  29   @retval EFI_UNSUPPORTED controller is not floppy disk
  30   @retval EFI_SUCCESS     controller is floppy disk
  31 **/
  32 EFI_STATUS
  33 EFIAPI
  34 KbdControllerDriverSupported (
  35   IN EFI_DRIVER_BINDING_PROTOCOL    *This,
  36   IN EFI_HANDLE                     Controller,
  37   IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
  38   );
  39
  40 /**
  41   Create KEYBOARD_CONSOLE_IN_DEV instance on controller.
  42
  43   @param This         Pointer of EFI_DRIVER_BINDING_PROTOCOL
  44   @param Controller   driver controller handle
  45   @param RemainingDevicePath Children's device path
  46
  47   @retval whether success to create floppy control instance.
  48 **/
  49 EFI_STATUS
  50 EFIAPI
  51 KbdControllerDriverStart (
  52   IN EFI_DRIVER_BINDING_PROTOCOL    *This,
  53   IN EFI_HANDLE                     Controller,
  54   IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
  55   );
  56
  57 /**
  58   Stop this driver on ControllerHandle. Support stoping any child handles
  59   created by this driver.
  60
  61   @param  This              Protocol instance pointer.
  62   @param  ControllerHandle  Handle of device to stop driver on
  63   @param  NumberOfChildren  Number of Handles in ChildHandleBuffer. If number of
  64                             children is zero stop the entire bus driver.
  65   @param  ChildHandleBuffer List of Child Handles to Stop.
  66
  67   @retval EFI_SUCCESS       This driver is removed ControllerHandle
  68   @retval other             This driver was not removed from this device
  69
  70 **/
  71 EFI_STATUS
  72 EFIAPI
  73 KbdControllerDriverStop (
  74   IN  EFI_DRIVER_BINDING_PROTOCOL    *This,
  75   IN  EFI_HANDLE                     Controller,
  76   IN  UINTN                          NumberOfChildren,
  77   IN  EFI_HANDLE                     *ChildHandleBuffer
  78   );
  79
  80 /**
  81   Free the waiting key notify list.
  82
  83   @param ListHead  Pointer to list head
  84
  85   @retval EFI_INVALID_PARAMETER  ListHead is NULL
  86   @retval EFI_SUCCESS            Sucess to free NotifyList
  87 **/
  88 EFI_STATUS
  89 KbdFreeNotifyList (
  90   IN OUT LIST_ENTRY           *ListHead
  91   );
  92
  93 //
  94 // DriverBinding Protocol Instance
  95 //
  96 EFI_DRIVER_BINDING_PROTOCOL gKeyboardControllerDriver = {
  97   KbdControllerDriverSupported,
  98   KbdControllerDriverStart,
  99   KbdControllerDriverStop,
 100   0xa,
 101   NULL,
 102   NULL
 103 };
 104
 105 /**
 106   Test controller is a keyboard Controller.
 107
 108   @param This                 Pointer of EFI_DRIVER_BINDING_PROTOCOL
 109   @param Controller           driver's controller
 110   @param RemainingDevicePath  children device path
 111
 112   @retval EFI_UNSUPPORTED controller is not floppy disk
 113   @retval EFI_SUCCESS     controller is floppy disk
 114 **/
 115 EFI_STATUS
 116 EFIAPI
 117 KbdControllerDriverSupported (
 118   IN EFI_DRIVER_BINDING_PROTOCOL    *This,
 119   IN EFI_HANDLE                     Controller,
 120   IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
 121   )
 122 {
 123   EFI_STATUS                          Status;
 124   EFI_ISA_IO_PROTOCOL                 *IsaIo;
 125
 126   //
 127   // Open the IO Abstraction(s) needed to perform the supported test
 128   //
 129   Status = gBS->OpenProtocol (
 130                   Controller,
 131                   &gEfiIsaIoProtocolGuid,
 132                   (VOID **) &IsaIo,
 133                   This->DriverBindingHandle,
 134                   Controller,
 135                   EFI_OPEN_PROTOCOL_BY_DRIVER
 136                   );
 137   if (EFI_ERROR (Status)) {
 138     return Status;
 139   }
 140   //
 141   // Use the ISA I/O Protocol to see if Controller is the Keyboard controller
 142   //
 143   if (IsaIo->ResourceList->Device.HID != EISA_PNP_ID (0x303) || IsaIo->ResourceList->Device.UID != 0) {
 144     Status = EFI_UNSUPPORTED;
 145   }
 146   //
 147   // Close the I/O Abstraction(s) used to perform the supported test
 148   //
 149   gBS->CloseProtocol (
 150          Controller,
 151          &gEfiIsaIoProtocolGuid,
 152          This->DriverBindingHandle,
 153          Controller
 154          );
 155
 156   return Status;
 157 }
 158
 159 /**
 160   Create KEYBOARD_CONSOLE_IN_DEV instance on controller.
 161
 162   @param This         Pointer of EFI_DRIVER_BINDING_PROTOCOL
 163   @param Controller   driver controller handle
 164   @param RemainingDevicePath Children's device path
 165
 166   @retval whether success to create floppy control instance.
 167 **/
 168 EFI_STATUS
 169 EFIAPI
 170 KbdControllerDriverStart (
 171   IN EFI_DRIVER_BINDING_PROTOCOL    *This,
 172   IN EFI_HANDLE                     Controller,
 173   IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
 174   )
 175 {
 176   EFI_STATUS                                Status;
 177   EFI_STATUS                                Status1;
 178   EFI_ISA_IO_PROTOCOL                       *IsaIo;
 179   KEYBOARD_CONSOLE_IN_DEV                   *ConsoleIn;
 180   UINT8                                     Data;
 181   EFI_STATUS_CODE_VALUE                     StatusCode;
 182   EFI_DEVICE_PATH_PROTOCOL                  *ParentDevicePath;
 183
 184   StatusCode = 0;
 185
 186   Status = gBS->OpenProtocol (
 187                   Controller,
 188                   &gEfiDevicePathProtocolGuid,
 189                   (VOID **) &ParentDevicePath,
 190                   This->DriverBindingHandle,
 191                   Controller,
 192                   EFI_OPEN_PROTOCOL_BY_DRIVER
 193                   );
 194   if (EFI_ERROR (Status)) {
 195     return Status;
 196   }
 197   //
 198   // Report that the keyboard is being enabled
 199   //
 200   REPORT_STATUS_CODE_WITH_DEVICE_PATH (
 201     EFI_PROGRESS_CODE,
 202     EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_ENABLE,
 203     ParentDevicePath
 204     );
 205
 206   //
 207   // Get the ISA I/O Protocol on Controller's handle
 208   //
 209   Status = gBS->OpenProtocol (
 210                   Controller,
 211                   &gEfiIsaIoProtocolGuid,
 212                   (VOID **) &IsaIo,
 213                   This->DriverBindingHandle,
 214                   Controller,
 215                   EFI_OPEN_PROTOCOL_BY_DRIVER
 216                   );
 217   if (EFI_ERROR (Status)) {
 218     gBS->CloseProtocol (
 219            Controller,
 220            &gEfiDevicePathProtocolGuid,
 221            This->DriverBindingHandle,
 222            Controller
 223            );
 224     return EFI_INVALID_PARAMETER;
 225   }
 226   //
 227   // Allocate private data
 228   //
 229   ConsoleIn = AllocateZeroPool (sizeof (KEYBOARD_CONSOLE_IN_DEV));
 230   if (ConsoleIn == NULL) {
 231     Status      = EFI_OUT_OF_RESOURCES;
 232     StatusCode  = EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_CONTROLLER_ERROR;
 233     goto ErrorExit;
 234   }
 235   //
 236   // Setup the device instance
 237   //
 238   ConsoleIn->Signature              = KEYBOARD_CONSOLE_IN_DEV_SIGNATURE;
 239   ConsoleIn->Handle                 = Controller;
 240   (ConsoleIn->ConIn).Reset          = KeyboardEfiReset;
 241   (ConsoleIn->ConIn).ReadKeyStroke  = KeyboardReadKeyStroke;
 242   ConsoleIn->DataRegisterAddress    = KEYBOARD_8042_DATA_REGISTER;
 243   ConsoleIn->StatusRegisterAddress  = KEYBOARD_8042_STATUS_REGISTER;
 244   ConsoleIn->CommandRegisterAddress = KEYBOARD_8042_COMMAND_REGISTER;
 245   ConsoleIn->IsaIo                  = IsaIo;
 246   ConsoleIn->DevicePath             = ParentDevicePath;
 247
 248   ConsoleIn->ConInEx.Reset               = KeyboardEfiResetEx;
 249   ConsoleIn->ConInEx.ReadKeyStrokeEx     = KeyboardReadKeyStrokeEx;
 250   ConsoleIn->ConInEx.SetState            = KeyboardSetState;
 251   ConsoleIn->ConInEx.RegisterKeyNotify   = KeyboardRegisterKeyNotify;
 252   ConsoleIn->ConInEx.UnregisterKeyNotify = KeyboardUnregisterKeyNotify;
 253
 254   InitializeListHead (&ConsoleIn->NotifyList);
 255
 256   //
 257   // Fix for random hangs in System waiting for the Key if no KBC is present in BIOS.
 258   // When KBC decode (IO port 0x60/0x64 decode) is not enabled,
 259   // KeyboardRead will read back as 0xFF and return status is EFI_SUCCESS.
 260   // So instead we read status register to detect after read if KBC decode is enabled.
 261   //
 262
 263   //
 264   // Return code is ignored on purpose.
 265   //
 266   KeyboardRead (ConsoleIn, &Data);
 267   if ((KeyReadStatusRegister (ConsoleIn) & (KBC_PARE | KBC_TIM)) == (KBC_PARE | KBC_TIM)) {
 268     //
 269     // If nobody decodes KBC I/O port, it will read back as 0xFF.
 270     // Check the Time-Out and Parity bit to see if it has an active KBC in system
 271     //
 272     Status      = EFI_DEVICE_ERROR;
 273     StatusCode  = EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_NOT_DETECTED;
 274     goto ErrorExit;
 275   }
 276
 277   //
 278   // Setup the WaitForKey event
 279   //
 280   Status = gBS->CreateEvent (
 281                   EVT_NOTIFY_WAIT,
 282                   TPL_NOTIFY,
 283                   KeyboardWaitForKey,
 284                   ConsoleIn,
 285                   &((ConsoleIn->ConIn).WaitForKey)
 286                   );
 287   if (EFI_ERROR (Status)) {
 288     Status      = EFI_OUT_OF_RESOURCES;
 289     StatusCode  = EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_CONTROLLER_ERROR;
 290     goto ErrorExit;
 291   }
 292   //
 293   // Setup the WaitForKeyEx event
 294   //
 295   Status = gBS->CreateEvent (
 296                   EVT_NOTIFY_WAIT,
 297                   TPL_NOTIFY,
 298                   KeyboardWaitForKeyEx,
 299                   ConsoleIn,
 300                   &(ConsoleIn->ConInEx.WaitForKeyEx)
 301                   );
 302   if (EFI_ERROR (Status)) {
 303     Status      = EFI_OUT_OF_RESOURCES;
 304     StatusCode  = EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_CONTROLLER_ERROR;
 305     goto ErrorExit;
 306   }
 307   // Setup a periodic timer, used for reading keystrokes at a fixed interval
 308   //
 309   Status = gBS->CreateEvent (
 310                   EVT_TIMER | EVT_NOTIFY_SIGNAL,
 311                   TPL_NOTIFY,
 312                   KeyboardTimerHandler,
 313                   ConsoleIn,
 314                   &ConsoleIn->TimerEvent
 315                   );
 316   if (EFI_ERROR (Status)) {
 317     Status      = EFI_OUT_OF_RESOURCES;
 318     StatusCode  = EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_CONTROLLER_ERROR;
 319     goto ErrorExit;
 320   }
 321
 322   Status = gBS->SetTimer (
 323                   ConsoleIn->TimerEvent,
 324                   TimerPeriodic,
 325                   KEYBOARD_TIMER_INTERVAL
 326                   );
 327   if (EFI_ERROR (Status)) {
 328     Status      = EFI_OUT_OF_RESOURCES;
 329     StatusCode  = EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_CONTROLLER_ERROR;
 330     goto ErrorExit;
 331   }
 332
 333   REPORT_STATUS_CODE_WITH_DEVICE_PATH (
 334     EFI_PROGRESS_CODE,
 335     EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_PRESENCE_DETECT,
 336     ParentDevicePath
 337     );
 338
 339   //
 340   // Reset the keyboard device
 341   //
 342   Status = ConsoleIn->ConInEx.Reset (&ConsoleIn->ConInEx, FeaturePcdGet (PcdPs2KbdExtendedVerification));
 343   if (EFI_ERROR (Status)) {
 344     Status      = EFI_DEVICE_ERROR;
 345     StatusCode  = EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_NOT_DETECTED;
 346     goto ErrorExit;
 347   }
 348
 349   ConsoleIn->ControllerNameTable = NULL;
 350   AddUnicodeString2 (
 351     "eng",
 352     gPs2KeyboardComponentName.SupportedLanguages,
 353     &ConsoleIn->ControllerNameTable,
 354     L"PS/2 Keyboard Device",
 355     TRUE
 356     );
 357   AddUnicodeString2 (
 358     "en",
 359     gPs2KeyboardComponentName2.SupportedLanguages,
 360     &ConsoleIn->ControllerNameTable,
 361     L"PS/2 Keyboard Device",
 362     FALSE
 363     );
 364
 365
 366   //
 367   // Install protocol interfaces for the keyboard device.
 368   //
 369   Status = gBS->InstallMultipleProtocolInterfaces (
 370                   &Controller,
 371                   &gEfiSimpleTextInProtocolGuid,
 372                   &ConsoleIn->ConIn,
 373                   &gEfiSimpleTextInputExProtocolGuid,
 374                   &ConsoleIn->ConInEx,
 375                   NULL
 376                   );
 377   if (EFI_ERROR (Status)) {
 378     StatusCode = EFI_PERIPHERAL_KEYBOARD | EFI_P_EC_CONTROLLER_ERROR;
 379     goto ErrorExit;
 380   }
 381
 382   return Status;
 383
 384 ErrorExit:
 385   //
 386   // Report error code
 387   //
 388   if (StatusCode != 0) {
 389     REPORT_STATUS_CODE_WITH_DEVICE_PATH (
 390       EFI_ERROR_CODE | EFI_ERROR_MINOR,
 391       StatusCode,
 392       ParentDevicePath
 393       );
 394   }
 395
 396   if ((ConsoleIn != NULL) && (ConsoleIn->ConIn.WaitForKey != NULL)) {
 397     gBS->CloseEvent (ConsoleIn->ConIn.WaitForKey);
 398   }
 399
 400   if ((ConsoleIn != NULL) && (ConsoleIn->TimerEvent != NULL)) {
 401     gBS->CloseEvent (ConsoleIn->TimerEvent);
 402   }
 403   if ((ConsoleIn != NULL) && (ConsoleIn->ConInEx.WaitForKeyEx != NULL)) {
 404     gBS->CloseEvent (ConsoleIn->ConInEx.WaitForKeyEx);
 405   }
 406   KbdFreeNotifyList (&ConsoleIn->NotifyList);
 407   if ((ConsoleIn != NULL) && (ConsoleIn->ControllerNameTable != NULL)) {
 408     FreeUnicodeStringTable (ConsoleIn->ControllerNameTable);
 409   }
 410   //
 411   // Since there will be no timer handler for keyboard input any more,
 412   // exhaust input data just in case there is still keyboard data left
 413   //
 414   if (ConsoleIn != NULL) {
 415     Status1 = EFI_SUCCESS;
 416     while (!EFI_ERROR (Status1) && (Status != EFI_DEVICE_ERROR)) {
 417       Status1 = KeyboardRead (ConsoleIn, &Data);;
 418     }
 419   }
 420
 421   if (ConsoleIn != NULL) {
 422     gBS->FreePool (ConsoleIn);
 423   }
 424
 425   gBS->CloseProtocol (
 426          Controller,
 427          &gEfiDevicePathProtocolGuid,
 428          This->DriverBindingHandle,
 429          Controller
 430          );
 431
 432   gBS->CloseProtocol (
 433          Controller,
 434          &gEfiIsaIoProtocolGuid,
 435          This->DriverBindingHandle,
 436          Controller
 437          );
 438
 439   return Status;
 440 }
 441
 442 /**
 443   Stop this driver on ControllerHandle. Support stoping any child handles
 444   created by this driver.
 445
 446   @param  This              Protocol instance pointer.
 447   @param  ControllerHandle  Handle of device to stop driver on
 448   @param  NumberOfChildren  Number of Handles in ChildHandleBuffer. If number of
 449                             children is zero stop the entire bus driver.
 450   @param  ChildHandleBuffer List of Child Handles to Stop.
 451
 452   @retval EFI_SUCCESS       This driver is removed ControllerHandle
 453   @retval other             This driver was not removed from this device
 454
 455 **/
 456 EFI_STATUS
 457 EFIAPI
 458 KbdControllerDriverStop (
 459   IN  EFI_DRIVER_BINDING_PROTOCOL    *This,
 460   IN  EFI_HANDLE                     Controller,
 461   IN  UINTN                          NumberOfChildren,
 462   IN  EFI_HANDLE                     *ChildHandleBuffer
 463   )
 464 {
 465   EFI_STATUS                     Status;
 466   EFI_SIMPLE_TEXT_INPUT_PROTOCOL *ConIn;
 467   KEYBOARD_CONSOLE_IN_DEV        *ConsoleIn;
 468   UINT8                          Data;
 469
 470   //
 471   // Disable Keyboard
 472   //
 473   Status = gBS->OpenProtocol (
 474                   Controller,
 475                   &gEfiSimpleTextInProtocolGuid,
 476                   (VOID **) &ConIn,
 477                   This->DriverBindingHandle,
 478                   Controller,
 479                   EFI_OPEN_PROTOCOL_GET_PROTOCOL
 480                   );
 481   if (EFI_ERROR (Status)) {
 482     return Status;
 483   }
 484   Status = gBS->OpenProtocol (
 485                   Controller,
 486                   &gEfiSimpleTextInputExProtocolGuid,
 487                   NULL,
 488                   This->DriverBindingHandle,
 489                   Controller,
 490                   EFI_OPEN_PROTOCOL_TEST_PROTOCOL
 491                   );
 492   if (EFI_ERROR (Status)) {
 493     return Status;
 494   }
 495
 496   ConsoleIn = KEYBOARD_CONSOLE_IN_DEV_FROM_THIS (ConIn);
 497
 498   //
 499   // Report that the keyboard is being disabled
 500   //
 501   REPORT_STATUS_CODE_WITH_DEVICE_PATH (
 502     EFI_PROGRESS_CODE,
 503     EFI_PERIPHERAL_KEYBOARD | EFI_P_PC_DISABLE,
 504     ConsoleIn->DevicePath
 505     );
 506
 507   if (ConsoleIn->TimerEvent != NULL) {
 508     gBS->CloseEvent (ConsoleIn->TimerEvent);
 509     ConsoleIn->TimerEvent = NULL;
 510   }
 511
 512   //
 513   // Since there will be no timer handler for keyboard input any more,
 514   // exhaust input data just in case there is still keyboard data left
 515   //
 516   Status = EFI_SUCCESS;
 517   while (!EFI_ERROR (Status)) {
 518     Status = KeyboardRead (ConsoleIn, &Data);;
 519   }
 520   //
 521   // Uninstall the SimpleTextIn and SimpleTextInEx protocols
 522   //
 523   Status = gBS->UninstallMultipleProtocolInterfaces (
 524                   Controller,
 525                   &gEfiSimpleTextInProtocolGuid,
 526                   &ConsoleIn->ConIn,
 527                   &gEfiSimpleTextInputExProtocolGuid,
 528                   &ConsoleIn->ConInEx,
 529                   NULL
 530                   );
 531   if (EFI_ERROR (Status)) {
 532     return Status;
 533   }
 534
 535   gBS->CloseProtocol (
 536          Controller,
 537          &gEfiDevicePathProtocolGuid,
 538          This->DriverBindingHandle,
 539          Controller
 540          );
 541
 542   gBS->CloseProtocol (
 543          Controller,
 544          &gEfiIsaIoProtocolGuid,
 545          This->DriverBindingHandle,
 546          Controller
 547          );
 548
 549   //
 550   // Free other resources
 551   //
 552   if ((ConsoleIn->ConIn).WaitForKey != NULL) {
 553     gBS->CloseEvent ((ConsoleIn->ConIn).WaitForKey);
 554     (ConsoleIn->ConIn).WaitForKey = NULL;
 555   }
 556   if (ConsoleIn->ConInEx.WaitForKeyEx != NULL) {
 557     gBS->CloseEvent (ConsoleIn->ConInEx.WaitForKeyEx);
 558     ConsoleIn->ConInEx.WaitForKeyEx = NULL;
 559   }
 560   KbdFreeNotifyList (&ConsoleIn->NotifyList);
 561   FreeUnicodeStringTable (ConsoleIn->ControllerNameTable);
 562   gBS->FreePool (ConsoleIn);
 563
 564   return EFI_SUCCESS;
 565 }
 566
 567 /**
 568   Free the waiting key notify list.
 569
 570   @param ListHead  Pointer to list head
 571
 572   @retval EFI_INVALID_PARAMETER  ListHead is NULL
 573   @retval EFI_SUCCESS            Sucess to free NotifyList
 574 **/
 575 EFI_STATUS
 576 KbdFreeNotifyList (
 577   IN OUT LIST_ENTRY           *ListHead
 578   )
 579 {
 580   KEYBOARD_CONSOLE_IN_EX_NOTIFY *NotifyNode;
 581
 582   if (ListHead == NULL) {
 583     return EFI_INVALID_PARAMETER;
 584   }
 585   while (!IsListEmpty (ListHead)) {
 586     NotifyNode = CR (
 587                    ListHead->ForwardLink,
 588                    KEYBOARD_CONSOLE_IN_EX_NOTIFY,
 589                    NotifyEntry,
 590                    KEYBOARD_CONSOLE_IN_EX_NOTIFY_SIGNATURE
 591                    );
 592     RemoveEntryList (ListHead->ForwardLink);
 593     gBS->FreePool (NotifyNode);
 594   }
 595
 596   return EFI_SUCCESS;
 597 }
 598
 599 /**
 600   The module Entry Point for module Ps2Keyboard.
 601
 602   @param[in] ImageHandle    The firmware allocated handle for the EFI image.
 603   @param[in] SystemTable    A pointer to the EFI System Table.
 604
 605   @retval EFI_SUCCESS       The entry point is executed successfully.
 606   @retval other             Some error occurs when executing this entry point.
 607
 608 **/
 609 EFI_STATUS
 610 EFIAPI
 611 InitializePs2Keyboard(
 612   IN EFI_HANDLE           ImageHandle,
 613   IN EFI_SYSTEM_TABLE     *SystemTable
 614   )
 615 {
 616   EFI_STATUS              Status;
 617
 618   //
 619   // Install driver model protocol(s).
 620   //
 621   Status = EfiLibInstallDriverBindingComponentName2 (
 622              ImageHandle,
 623              SystemTable,
 624              &gKeyboardControllerDriver,
 625              ImageHandle,
 626              &gPs2KeyboardComponentName,
 627              &gPs2KeyboardComponentName2
 628              );
 629   ASSERT_EFI_ERROR (Status);
 630
 631
 632   return Status;
 633 }
 634