1 /** @file 2 Header file for Terminal driver. 3 4 Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> 5 Copyright (C) 2016 Silicon Graphics, Inc. All rights reserved.<BR> 6 SPDX-License-Identifier: BSD-2-Clause-Patent 7 8 **/ 9 10 #ifndef _TERMINAL_H_ 11 #define _TERMINAL_H_ 12 13 14 #include <Uefi.h> 15 16 #include <Guid/GlobalVariable.h> 17 #include <Guid/PcAnsi.h> 18 #include <Guid/TtyTerm.h> 19 #include <Guid/StatusCodeDataTypeVariable.h> 20 21 #include <Protocol/SimpleTextOut.h> 22 #include <Protocol/SerialIo.h> 23 #include <Protocol/DevicePath.h> 24 #include <Protocol/SimpleTextIn.h> 25 #include <Protocol/SimpleTextInEx.h> 26 27 #include <Library/DebugLib.h> 28 #include <Library/UefiDriverEntryPoint.h> 29 #include <Library/UefiLib.h> 30 #include <Library/ReportStatusCodeLib.h> 31 #include <Library/BaseMemoryLib.h> 32 #include <Library/MemoryAllocationLib.h> 33 #include <Library/UefiBootServicesTableLib.h> 34 #include <Library/UefiRuntimeServicesTableLib.h> 35 #include <Library/DevicePathLib.h> 36 #include <Library/PcdLib.h> 37 #include <Library/BaseLib.h> 38 39 40 #define RAW_FIFO_MAX_NUMBER 256 41 #define FIFO_MAX_NUMBER 128 42 43 typedef struct { 44 UINT8 Head; 45 UINT8 Tail; 46 UINT8 Data[RAW_FIFO_MAX_NUMBER + 1]; 47 } RAW_DATA_FIFO; 48 49 typedef struct { 50 UINT8 Head; 51 UINT8 Tail; 52 UINT16 Data[FIFO_MAX_NUMBER + 1]; 53 } UNICODE_FIFO; 54 55 typedef struct { 56 UINT8 Head; 57 UINT8 Tail; 58 EFI_INPUT_KEY Data[FIFO_MAX_NUMBER + 1]; 59 } EFI_KEY_FIFO; 60 61 typedef struct { 62 UINTN Columns; 63 UINTN Rows; 64 } TERMINAL_CONSOLE_MODE_DATA; 65 66 #define KEYBOARD_TIMER_INTERVAL 200000 // 0.02s 67 68 #define TERMINAL_DEV_SIGNATURE SIGNATURE_32 ('t', 'm', 'n', 'l') 69 70 #define TERMINAL_CONSOLE_IN_EX_NOTIFY_SIGNATURE SIGNATURE_32 ('t', 'm', 'e', 'n') 71 72 typedef struct _TERMINAL_CONSOLE_IN_EX_NOTIFY { 73 UINTN Signature; 74 EFI_KEY_DATA KeyData; 75 EFI_KEY_NOTIFY_FUNCTION KeyNotificationFn; 76 LIST_ENTRY NotifyEntry; 77 } TERMINAL_CONSOLE_IN_EX_NOTIFY; 78 79 typedef enum { 80 TerminalTypePcAnsi, 81 TerminalTypeVt100, 82 TerminalTypeVt100Plus, 83 TerminalTypeVtUtf8, 84 TerminalTypeTtyTerm 85 } TERMINAL_TYPE; 86 87 typedef struct { 88 UINTN Signature; 89 EFI_HANDLE Handle; 90 TERMINAL_TYPE TerminalType; 91 EFI_SERIAL_IO_PROTOCOL *SerialIo; 92 EFI_DEVICE_PATH_PROTOCOL *DevicePath; 93 EFI_SIMPLE_TEXT_INPUT_PROTOCOL SimpleInput; 94 EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL SimpleTextOutput; 95 EFI_SIMPLE_TEXT_OUTPUT_MODE SimpleTextOutputMode; 96 TERMINAL_CONSOLE_MODE_DATA *TerminalConsoleModeData; 97 UINTN SerialInTimeOut; 98 RAW_DATA_FIFO *RawFiFo; 99 UNICODE_FIFO *UnicodeFiFo; 100 EFI_KEY_FIFO *EfiKeyFiFo; 101 EFI_KEY_FIFO *EfiKeyFiFoForNotify; 102 EFI_UNICODE_STRING_TABLE *ControllerNameTable; 103 EFI_EVENT TimerEvent; 104 EFI_EVENT TwoSecondTimeOut; 105 UINT32 InputState; 106 UINT32 ResetState; 107 UINT16 TtyEscapeStr[3]; 108 INTN TtyEscapeIndex; 109 110 // 111 // Esc could not be output to the screen by user, 112 // but the terminal driver need to output it to 113 // the terminal emulation software to send control sequence. 114 // This boolean is used by the terminal driver only 115 // to indicate whether the Esc could be sent or not. 116 // 117 BOOLEAN OutputEscChar; 118 EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL SimpleInputEx; 119 LIST_ENTRY NotifyList; 120 EFI_EVENT KeyNotifyProcessEvent; 121 } TERMINAL_DEV; 122 123 #define INPUT_STATE_DEFAULT 0x00 124 #define INPUT_STATE_ESC 0x01 125 #define INPUT_STATE_CSI 0x02 126 #define INPUT_STATE_LEFTOPENBRACKET 0x04 127 #define INPUT_STATE_O 0x08 128 #define INPUT_STATE_2 0x10 129 #define INPUT_STATE_LEFTOPENBRACKET_2 0x20 130 131 #define RESET_STATE_DEFAULT 0x00 132 #define RESET_STATE_ESC_R 0x01 133 #define RESET_STATE_ESC_R_ESC_R 0x02 134 135 #define TERMINAL_CON_IN_DEV_FROM_THIS(a) CR (a, TERMINAL_DEV, SimpleInput, TERMINAL_DEV_SIGNATURE) 136 #define TERMINAL_CON_OUT_DEV_FROM_THIS(a) CR (a, TERMINAL_DEV, SimpleTextOutput, TERMINAL_DEV_SIGNATURE) 137 #define TERMINAL_CON_IN_EX_DEV_FROM_THIS(a) CR (a, TERMINAL_DEV, SimpleInputEx, TERMINAL_DEV_SIGNATURE) 138 139 typedef union { 140 UINT8 Utf8_1; 141 UINT8 Utf8_2[2]; 142 UINT8 Utf8_3[3]; 143 } UTF8_CHAR; 144 145 #define LEFTOPENBRACKET 0x5b // '[' 146 #define ACAP 0x41 147 #define BCAP 0x42 148 #define CCAP 0x43 149 #define DCAP 0x44 150 151 #define BACKSPACE 8 152 #define ESC 27 153 #define CSI 0x9B 154 #define DEL 127 155 #define BRIGHT_CONTROL_OFFSET 2 156 #define FOREGROUND_CONTROL_OFFSET 6 157 #define BACKGROUND_CONTROL_OFFSET 11 158 #define ROW_OFFSET 2 159 #define COLUMN_OFFSET 5 160 #define FW_BACK_OFFSET 2 161 162 typedef struct { 163 UINT16 Unicode; 164 CHAR8 PcAnsi; 165 CHAR8 Ascii; 166 } UNICODE_TO_CHAR; 167 168 // 169 // Global Variables 170 // 171 extern EFI_DRIVER_BINDING_PROTOCOL gTerminalDriverBinding; 172 extern EFI_COMPONENT_NAME_PROTOCOL gTerminalComponentName; 173 extern EFI_COMPONENT_NAME2_PROTOCOL gTerminalComponentName2; 174 175 /** 176 The user Entry Point for module Terminal. The user code starts with this function. 177 178 @param[in] ImageHandle The firmware allocated handle for the EFI image. 179 @param[in] SystemTable A pointer to the EFI System Table. 180 181 @retval EFI_SUCCESS The entry point is executed successfully. 182 @retval other Some error occurs when executing this entry point. 183 184 **/ 185 EFI_STATUS 186 EFIAPI 187 InitializeTerminal ( 188 IN EFI_HANDLE ImageHandle, 189 IN EFI_SYSTEM_TABLE *SystemTable 190 ); 191 192 /** 193 Implements EFI_SIMPLE_TEXT_INPUT_PROTOCOL.Reset(). 194 This driver only perform dependent serial device reset regardless of 195 the value of ExtendeVerification 196 197 @param This Indicates the calling context. 198 @param ExtendedVerification Skip by this driver. 199 200 @retval EFI_SUCCESS The reset operation succeeds. 201 @retval EFI_DEVICE_ERROR The dependent serial port reset fails. 202 203 **/ 204 EFI_STATUS 205 EFIAPI 206 TerminalConInReset ( 207 IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This, 208 IN BOOLEAN ExtendedVerification 209 ); 210 211 212 /** 213 Implements EFI_SIMPLE_TEXT_INPUT_PROTOCOL.ReadKeyStroke(). 214 215 @param This Indicates the calling context. 216 @param Key A pointer to a buffer that is filled in with the 217 keystroke information for the key that was sent 218 from terminal. 219 220 @retval EFI_SUCCESS The keystroke information is returned successfully. 221 @retval EFI_NOT_READY There is no keystroke data available. 222 @retval EFI_DEVICE_ERROR The dependent serial device encounters error. 223 224 **/ 225 EFI_STATUS 226 EFIAPI 227 TerminalConInReadKeyStroke ( 228 IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This, 229 OUT EFI_INPUT_KEY *Key 230 ); 231 232 /** 233 Check if the key already has been registered. 234 235 @param RegsiteredData A pointer to a buffer that is filled in with the 236 keystroke state data for the key that was 237 registered. 238 @param InputData A pointer to a buffer that is filled in with the 239 keystroke state data for the key that was 240 pressed. 241 242 @retval TRUE Key be pressed matches a registered key. 243 @retval FALSE Match failed. 244 245 **/ 246 BOOLEAN 247 IsKeyRegistered ( 248 IN EFI_KEY_DATA *RegsiteredData, 249 IN EFI_KEY_DATA *InputData 250 ); 251 252 /** 253 Event notification function for EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.WaitForKeyEx event 254 Signal the event if there is key available 255 256 @param Event Indicates the event that invoke this function. 257 @param Context Indicates the calling context. 258 259 **/ 260 VOID 261 EFIAPI 262 TerminalConInWaitForKeyEx ( 263 IN EFI_EVENT Event, 264 IN VOID *Context 265 ); 266 267 // 268 // Simple Text Input Ex protocol prototypes 269 // 270 271 /** 272 Reset the input device and optionally run diagnostics 273 274 @param This Protocol instance pointer. 275 @param ExtendedVerification Driver may perform diagnostics on reset. 276 277 @retval EFI_SUCCESS The device was reset. 278 @retval EFI_DEVICE_ERROR The device is not functioning properly and could 279 not be reset. 280 281 **/ 282 EFI_STATUS 283 EFIAPI 284 TerminalConInResetEx ( 285 IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This, 286 IN BOOLEAN ExtendedVerification 287 ); 288 289 /** 290 Reads the next keystroke from the input device. The WaitForKey Event can 291 be used to test for existence of a keystroke via WaitForEvent () call. 292 293 @param This Protocol instance pointer. 294 @param KeyData A pointer to a buffer that is filled in with the 295 keystroke state data for the key that was 296 pressed. 297 298 @retval EFI_SUCCESS The keystroke information was returned. 299 @retval EFI_NOT_READY There was no keystroke data available. 300 @retval EFI_DEVICE_ERROR The keystroke information was not returned due 301 to hardware errors. 302 @retval EFI_INVALID_PARAMETER KeyData is NULL. 303 304 **/ 305 EFI_STATUS 306 EFIAPI 307 TerminalConInReadKeyStrokeEx ( 308 IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This, 309 OUT EFI_KEY_DATA *KeyData 310 ); 311 312 /** 313 Set certain state for the input device. 314 315 @param This Protocol instance pointer. 316 @param KeyToggleState A pointer to the EFI_KEY_TOGGLE_STATE to set the 317 state for the input device. 318 319 @retval EFI_SUCCESS The device state was set successfully. 320 @retval EFI_DEVICE_ERROR The device is not functioning correctly and 321 could not have the setting adjusted. 322 @retval EFI_UNSUPPORTED The device does not have the ability to set its 323 state. 324 @retval EFI_INVALID_PARAMETER KeyToggleState is NULL. 325 326 **/ 327 EFI_STATUS 328 EFIAPI 329 TerminalConInSetState ( 330 IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This, 331 IN EFI_KEY_TOGGLE_STATE *KeyToggleState 332 ); 333 334 /** 335 Register a notification function for a particular keystroke for the input device. 336 337 @param This Protocol instance pointer. 338 @param KeyData A pointer to a buffer that is filled in with the 339 keystroke information data for the key that was 340 pressed. If KeyData.Key, KeyData.KeyState.KeyToggleState 341 and KeyData.KeyState.KeyShiftState are 0, then any incomplete 342 keystroke will trigger a notification of the KeyNotificationFunction. 343 @param KeyNotificationFunction Points to the function to be called when the key 344 sequence is typed specified by KeyData. This notification function 345 should be called at <=TPL_CALLBACK. 346 @param NotifyHandle Points to the unique handle assigned to the 347 registered notification. 348 349 @retval EFI_SUCCESS The notification function was registered 350 successfully. 351 @retval EFI_OUT_OF_RESOURCES Unable to allocate resources for necesssary data 352 structures. 353 @retval EFI_INVALID_PARAMETER KeyData or NotifyHandle is NULL. 354 355 **/ 356 EFI_STATUS 357 EFIAPI 358 TerminalConInRegisterKeyNotify ( 359 IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This, 360 IN EFI_KEY_DATA *KeyData, 361 IN EFI_KEY_NOTIFY_FUNCTION KeyNotificationFunction, 362 OUT VOID **NotifyHandle 363 ); 364 365 /** 366 Remove a registered notification function from a particular keystroke. 367 368 @param This Protocol instance pointer. 369 @param NotificationHandle The handle of the notification function being 370 unregistered. 371 372 @retval EFI_SUCCESS The notification function was unregistered 373 successfully. 374 @retval EFI_INVALID_PARAMETER The NotificationHandle is invalid. 375 @retval EFI_NOT_FOUND Can not find the matching entry in database. 376 377 **/ 378 EFI_STATUS 379 EFIAPI 380 TerminalConInUnregisterKeyNotify ( 381 IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *This, 382 IN VOID *NotificationHandle 383 ); 384 385 /** 386 Event notification function for EFI_SIMPLE_TEXT_INPUT_PROTOCOL.WaitForKey event 387 Signal the event if there is key available 388 389 @param Event Indicates the event that invoke this function. 390 @param Context Indicates the calling context. 391 392 **/ 393 VOID 394 EFIAPI 395 TerminalConInWaitForKey ( 396 IN EFI_EVENT Event, 397 IN VOID *Context 398 ); 399 400 /** 401 Implements EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.Reset(). 402 If ExtendeVerification is TRUE, then perform dependent serial device reset, 403 and set display mode to mode 0. 404 If ExtendedVerification is FALSE, only set display mode to mode 0. 405 406 @param This Indicates the calling context. 407 @param ExtendedVerification Indicates that the driver may perform a more 408 exhaustive verification operation of the device 409 during reset. 410 411 @retval EFI_SUCCESS The reset operation succeeds. 412 @retval EFI_DEVICE_ERROR The terminal is not functioning correctly or the serial port reset fails. 413 414 **/ 415 EFI_STATUS 416 EFIAPI 417 TerminalConOutReset ( 418 IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This, 419 IN BOOLEAN ExtendedVerification 420 ); 421 422 /** 423 Implements EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.OutputString(). 424 The Unicode string will be converted to terminal expressible data stream 425 and send to terminal via serial port. 426 427 @param This Indicates the calling context. 428 @param WString The Null-terminated Unicode string to be displayed 429 on the terminal screen. 430 431 @retval EFI_SUCCESS The string is output successfully. 432 @retval EFI_DEVICE_ERROR The serial port fails to send the string out. 433 @retval EFI_WARN_UNKNOWN_GLYPH Indicates that some of the characters in the Unicode string could not 434 be rendered and are skipped. 435 @retval EFI_UNSUPPORTED If current display mode is out of range. 436 437 **/ 438 EFI_STATUS 439 EFIAPI 440 TerminalConOutOutputString ( 441 IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This, 442 IN CHAR16 *WString 443 ); 444 445 /** 446 Implements EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.TestString(). 447 If one of the characters in the *Wstring is 448 neither valid Unicode drawing characters, 449 not ASCII code, then this function will return 450 EFI_UNSUPPORTED. 451 452 @param This Indicates the calling context. 453 @param WString The Null-terminated Unicode string to be tested. 454 455 @retval EFI_SUCCESS The terminal is capable of rendering the output string. 456 @retval EFI_UNSUPPORTED Some of the characters in the Unicode string cannot be rendered. 457 458 **/ 459 EFI_STATUS 460 EFIAPI 461 TerminalConOutTestString ( 462 IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This, 463 IN CHAR16 *WString 464 ); 465 466 /** 467 Implements EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.QueryMode(). 468 It returns information for an available text mode 469 that the terminal supports. 470 In this driver, we support text mode 80x25 (mode 0), 471 80x50 (mode 1), 100x31 (mode 2). 472 473 @param This Indicates the calling context. 474 @param ModeNumber The mode number to return information on. 475 @param Columns The returned columns of the requested mode. 476 @param Rows The returned rows of the requested mode. 477 478 @retval EFI_SUCCESS The requested mode information is returned. 479 @retval EFI_UNSUPPORTED The mode number is not valid. 480 @retval EFI_DEVICE_ERROR 481 482 **/ 483 EFI_STATUS 484 EFIAPI 485 TerminalConOutQueryMode ( 486 IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This, 487 IN UINTN ModeNumber, 488 OUT UINTN *Columns, 489 OUT UINTN *Rows 490 ); 491 492 /** 493 Implements EFI_SIMPLE_TEXT_OUT.SetMode(). 494 Set the terminal to a specified display mode. 495 In this driver, we only support mode 0. 496 497 @param This Indicates the calling context. 498 @param ModeNumber The text mode to set. 499 500 @retval EFI_SUCCESS The requested text mode is set. 501 @retval EFI_DEVICE_ERROR The requested text mode cannot be set 502 because of serial device error. 503 @retval EFI_UNSUPPORTED The text mode number is not valid. 504 505 **/ 506 EFI_STATUS 507 EFIAPI 508 TerminalConOutSetMode ( 509 IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This, 510 IN UINTN ModeNumber 511 ); 512 513 /** 514 Implements EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.SetAttribute(). 515 516 @param This Indicates the calling context. 517 @param Attribute The attribute to set. Only bit0..6 are valid, all other bits 518 are undefined and must be zero. 519 520 @retval EFI_SUCCESS The requested attribute is set. 521 @retval EFI_DEVICE_ERROR The requested attribute cannot be set due to serial port error. 522 @retval EFI_UNSUPPORTED The attribute requested is not defined by EFI spec. 523 524 **/ 525 EFI_STATUS 526 EFIAPI 527 TerminalConOutSetAttribute ( 528 IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This, 529 IN UINTN Attribute 530 ); 531 532 /** 533 Implements EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.ClearScreen(). 534 It clears the ANSI terminal's display to the 535 currently selected background color. 536 537 @param This Indicates the calling context. 538 539 @retval EFI_SUCCESS The operation completed successfully. 540 @retval EFI_DEVICE_ERROR The terminal screen cannot be cleared due to serial port error. 541 @retval EFI_UNSUPPORTED The terminal is not in a valid display mode. 542 543 **/ 544 EFI_STATUS 545 EFIAPI 546 TerminalConOutClearScreen ( 547 IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This 548 ); 549 550 /** 551 Implements EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.SetCursorPosition(). 552 553 @param This Indicates the calling context. 554 @param Column The row to set cursor to. 555 @param Row The column to set cursor to. 556 557 @retval EFI_SUCCESS The operation completed successfully. 558 @retval EFI_DEVICE_ERROR The request fails due to serial port error. 559 @retval EFI_UNSUPPORTED The terminal is not in a valid text mode, or the cursor position 560 is invalid for current mode. 561 562 **/ 563 EFI_STATUS 564 EFIAPI 565 TerminalConOutSetCursorPosition ( 566 IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This, 567 IN UINTN Column, 568 IN UINTN Row 569 ); 570 571 /** 572 Implements SIMPLE_TEXT_OUTPUT.EnableCursor(). 573 In this driver, the cursor cannot be hidden. 574 575 @param This Indicates the calling context. 576 @param Visible If TRUE, the cursor is set to be visible, 577 If FALSE, the cursor is set to be invisible. 578 579 @retval EFI_SUCCESS The request is valid. 580 @retval EFI_UNSUPPORTED The terminal does not support cursor hidden. 581 582 **/ 583 EFI_STATUS 584 EFIAPI 585 TerminalConOutEnableCursor ( 586 IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *This, 587 IN BOOLEAN Visible 588 ); 589 590 /** 591 Test to see if this driver supports Controller. 592 593 @param This Protocol instance pointer. 594 @param ControllerHandle Handle of device to test 595 @param RemainingDevicePath Optional parameter use to pick a specific child 596 device to start. 597 598 @retval EFI_SUCCESS This driver supports this device. 599 @retval EFI_ALREADY_STARTED This driver is already running on this device. 600 @retval other This driver does not support this device. 601 602 **/ 603 EFI_STATUS 604 EFIAPI 605 TerminalDriverBindingSupported ( 606 IN EFI_DRIVER_BINDING_PROTOCOL *This, 607 IN EFI_HANDLE ControllerHandle, 608 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath 609 ); 610 611 /** 612 Start this driver on Controller by opening a Serial IO protocol, 613 reading Device Path, and creating a child handle with a Simple Text In, 614 Simple Text In Ex and Simple Text Out protocol, and device path protocol. 615 And store Console Device Environment Variables. 616 617 @param This Protocol instance pointer. 618 @param Controller Handle of device to bind driver to 619 @param RemainingDevicePath Optional parameter use to pick a specific child 620 device to start. 621 622 @retval EFI_SUCCESS This driver is added to Controller. 623 @retval EFI_ALREADY_STARTED This driver is already running on Controller. 624 @retval other This driver does not support this device. 625 626 **/ 627 EFI_STATUS 628 EFIAPI 629 TerminalDriverBindingStart ( 630 IN EFI_DRIVER_BINDING_PROTOCOL *This, 631 IN EFI_HANDLE Controller, 632 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath 633 ); 634 635 636 /** 637 Stop this driver on Controller by closing Simple Text In, Simple Text 638 In Ex, Simple Text Out protocol, and removing parent device path from 639 Console Device Environment Variables. 640 641 @param This Protocol instance pointer. 642 @param Controller Handle of device to stop driver on 643 @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of 644 children is zero stop the entire bus driver. 645 @param ChildHandleBuffer List of Child Handles to Stop. 646 647 @retval EFI_SUCCESS This driver is removed Controller. 648 @retval other This driver could not be removed from this device. 649 650 **/ 651 EFI_STATUS 652 EFIAPI 653 TerminalDriverBindingStop ( 654 IN EFI_DRIVER_BINDING_PROTOCOL *This, 655 IN EFI_HANDLE Controller, 656 IN UINTN NumberOfChildren, 657 IN EFI_HANDLE *ChildHandleBuffer 658 ); 659 660 /** 661 Free notify functions list. 662 663 @param ListHead The list head 664 665 @retval EFI_SUCCESS Free the notify list successfully. 666 @retval EFI_INVALID_PARAMETER ListHead is NULL. 667 668 **/ 669 EFI_STATUS 670 TerminalFreeNotifyList ( 671 IN OUT LIST_ENTRY *ListHead 672 ); 673 674 /** 675 Retrieves a Unicode string that is the user readable name of the driver. 676 677 This function retrieves the user readable name of a driver in the form of a 678 Unicode string. If the driver specified by This has a user readable name in 679 the language specified by Language, then a pointer to the driver name is 680 returned in DriverName, and EFI_SUCCESS is returned. If the driver specified 681 by This does not support the language specified by Language, 682 then EFI_UNSUPPORTED is returned. 683 684 @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or 685 EFI_COMPONENT_NAME_PROTOCOL instance. 686 687 @param Language[in] A pointer to a Null-terminated ASCII string 688 array indicating the language. This is the 689 language of the driver name that the caller is 690 requesting, and it must match one of the 691 languages specified in SupportedLanguages. The 692 number of languages supported by a driver is up 693 to the driver writer. Language is specified 694 in RFC 4646 or ISO 639-2 language code format. 695 696 @param DriverName[out] A pointer to the Unicode string to return. 697 This Unicode string is the name of the 698 driver specified by This in the language 699 specified by Language. 700 701 @retval EFI_SUCCESS The Unicode string for the Driver specified by 702 This and the language specified by Language was 703 returned in DriverName. 704 705 @retval EFI_INVALID_PARAMETER Language is NULL. 706 707 @retval EFI_INVALID_PARAMETER DriverName is NULL. 708 709 @retval EFI_UNSUPPORTED The driver specified by This does not support 710 the language specified by Language. 711 712 **/ 713 EFI_STATUS 714 EFIAPI 715 TerminalComponentNameGetDriverName ( 716 IN EFI_COMPONENT_NAME_PROTOCOL *This, 717 IN CHAR8 *Language, 718 OUT CHAR16 **DriverName 719 ); 720 721 722 /** 723 Retrieves a Unicode string that is the user readable name of the controller 724 that is being managed by a driver. 725 726 This function retrieves the user readable name of the controller specified by 727 ControllerHandle and ChildHandle in the form of a Unicode string. If the 728 driver specified by This has a user readable name in the language specified by 729 Language, then a pointer to the controller name is returned in ControllerName, 730 and EFI_SUCCESS is returned. If the driver specified by This is not currently 731 managing the controller specified by ControllerHandle and ChildHandle, 732 then EFI_UNSUPPORTED is returned. If the driver specified by This does not 733 support the language specified by Language, then EFI_UNSUPPORTED is returned. 734 735 @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or 736 EFI_COMPONENT_NAME_PROTOCOL instance. 737 738 @param ControllerHandle[in] The handle of a controller that the driver 739 specified by This is managing. This handle 740 specifies the controller whose name is to be 741 returned. 742 743 @param ChildHandle[in] The handle of the child controller to retrieve 744 the name of. This is an optional parameter that 745 may be NULL. It will be NULL for device 746 drivers. It will also be NULL for a bus drivers 747 that wish to retrieve the name of the bus 748 controller. It will not be NULL for a bus 749 driver that wishes to retrieve the name of a 750 child controller. 751 752 @param Language[in] A pointer to a Null-terminated ASCII string 753 array indicating the language. This is the 754 language of the driver name that the caller is 755 requesting, and it must match one of the 756 languages specified in SupportedLanguages. The 757 number of languages supported by a driver is up 758 to the driver writer. Language is specified in 759 RFC 4646 or ISO 639-2 language code format. 760 761 @param ControllerName[out] A pointer to the Unicode string to return. 762 This Unicode string is the name of the 763 controller specified by ControllerHandle and 764 ChildHandle in the language specified by 765 Language from the point of view of the driver 766 specified by This. 767 768 @retval EFI_SUCCESS The Unicode string for the user readable name in 769 the language specified by Language for the 770 driver specified by This was returned in 771 DriverName. 772 773 @retval EFI_INVALID_PARAMETER ControllerHandle is NULL. 774 775 @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid 776 EFI_HANDLE. 777 778 @retval EFI_INVALID_PARAMETER Language is NULL. 779 780 @retval EFI_INVALID_PARAMETER ControllerName is NULL. 781 782 @retval EFI_UNSUPPORTED The driver specified by This is not currently 783 managing the controller specified by 784 ControllerHandle and ChildHandle. 785 786 @retval EFI_UNSUPPORTED The driver specified by This does not support 787 the language specified by Language. 788 789 **/ 790 EFI_STATUS 791 EFIAPI 792 TerminalComponentNameGetControllerName ( 793 IN EFI_COMPONENT_NAME_PROTOCOL *This, 794 IN EFI_HANDLE ControllerHandle, 795 IN EFI_HANDLE ChildHandle OPTIONAL, 796 IN CHAR8 *Language, 797 OUT CHAR16 **ControllerName 798 ); 799 800 801 // 802 // internal functions 803 // 804 805 /** 806 Check for a pending key in the Efi Key FIFO or Serial device buffer. 807 808 @param This Indicates the calling context. 809 810 @retval EFI_SUCCESS There is key pending. 811 @retval EFI_NOT_READY There is no key pending. 812 @retval EFI_DEVICE_ERROR If Serial IO is not attached to serial device. 813 814 **/ 815 EFI_STATUS 816 TerminalConInCheckForKey ( 817 IN EFI_SIMPLE_TEXT_INPUT_PROTOCOL *This 818 ); 819 820 /** 821 Update terminal device path in Console Device Environment Variables. 822 823 @param VariableName The Console Device Environment Variable. 824 @param ParentDevicePath The terminal device path to be updated. 825 826 @return None. 827 828 **/ 829 VOID 830 TerminalUpdateConsoleDevVariable ( 831 IN CHAR16 *VariableName, 832 IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath 833 ); 834 835 /** 836 Remove console device variable. 837 838 @param VariableName A pointer to the variable name. 839 @param ParentDevicePath A pointer to the parent device path. 840 841 **/ 842 VOID 843 TerminalRemoveConsoleDevVariable ( 844 IN CHAR16 *VariableName, 845 IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath 846 ); 847 848 /** 849 Build termial device path according to terminal type. 850 851 @param TerminalType The terminal type is PC ANSI, VT100, VT100+ or VT-UTF8. 852 @param ParentDevicePath Parent device path. 853 @param TerminalDevicePath Returned terminal device path, if building successfully. 854 855 @retval EFI_UNSUPPORTED Terminal does not belong to the supported type. 856 @retval EFI_OUT_OF_RESOURCES Generate terminal device path failed. 857 @retval EFI_SUCCESS Build terminal device path successfully. 858 859 **/ 860 EFI_STATUS 861 SetTerminalDevicePath ( 862 IN TERMINAL_TYPE TerminalType, 863 IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath, 864 OUT EFI_DEVICE_PATH_PROTOCOL **TerminalDevicePath 865 ); 866 867 /** 868 Get one key out of serial buffer. 869 870 @param SerialIo Serial I/O protocl attached to the serial device. 871 @param Input The fetched key. 872 873 @retval EFI_NOT_READY If serial buffer is empty. 874 @retval EFI_DEVICE_ERROR If reading serial buffer encounter error. 875 @retval EFI_SUCCESS If reading serial buffer successfully, put 876 the fetched key to the parameter output. 877 878 **/ 879 EFI_STATUS 880 GetOneKeyFromSerial ( 881 EFI_SERIAL_IO_PROTOCOL *SerialIo, 882 UINT8 *Input 883 ); 884 885 /** 886 Insert one byte raw data into the Raw Data FIFO. 887 888 @param TerminalDevice Terminal driver private structure. 889 @param Input The key will be input. 890 891 @retval TRUE If insert successfully. 892 @retval FALSE If Raw Data buffer is full before key insertion, 893 and the key is lost. 894 895 **/ 896 BOOLEAN 897 RawFiFoInsertOneKey ( 898 TERMINAL_DEV *TerminalDevice, 899 UINT8 Input 900 ); 901 902 /** 903 Remove one pre-fetched key out of the Raw Data FIFO. 904 905 @param TerminalDevice Terminal driver private structure. 906 @param Output The key will be removed. 907 908 @retval TRUE If insert successfully. 909 @retval FALSE If Raw Data FIFO buffer is empty before remove operation. 910 911 **/ 912 BOOLEAN 913 RawFiFoRemoveOneKey ( 914 TERMINAL_DEV *TerminalDevice, 915 UINT8 *Output 916 ); 917 918 /** 919 Clarify whether Raw Data FIFO buffer is empty. 920 921 @param TerminalDevice Terminal driver private structure 922 923 @retval TRUE If Raw Data FIFO buffer is empty. 924 @retval FALSE If Raw Data FIFO buffer is not empty. 925 926 **/ 927 BOOLEAN 928 IsRawFiFoEmpty ( 929 TERMINAL_DEV *TerminalDevice 930 ); 931 932 /** 933 Clarify whether Raw Data FIFO buffer is full. 934 935 @param TerminalDevice Terminal driver private structure 936 937 @retval TRUE If Raw Data FIFO buffer is full. 938 @retval FALSE If Raw Data FIFO buffer is not full. 939 940 **/ 941 BOOLEAN 942 IsRawFiFoFull ( 943 TERMINAL_DEV *TerminalDevice 944 ); 945 946 /** 947 Insert one pre-fetched key into the FIFO buffer. 948 949 @param EfiKeyFiFo Pointer to instance of EFI_KEY_FIFO. 950 @param Input The key will be input. 951 952 @retval TRUE If insert successfully. 953 @retval FALSE If FIFO buffer is full before key insertion, 954 and the key is lost. 955 956 **/ 957 BOOLEAN 958 EfiKeyFiFoForNotifyInsertOneKey ( 959 EFI_KEY_FIFO *EfiKeyFiFo, 960 EFI_INPUT_KEY *Input 961 ); 962 963 /** 964 Remove one pre-fetched key out of the FIFO buffer. 965 966 @param EfiKeyFiFo Pointer to instance of EFI_KEY_FIFO. 967 @param Output The key will be removed. 968 969 @retval TRUE If insert successfully. 970 @retval FALSE If FIFO buffer is empty before remove operation. 971 972 **/ 973 BOOLEAN 974 EfiKeyFiFoForNotifyRemoveOneKey ( 975 EFI_KEY_FIFO *EfiKeyFiFo, 976 EFI_INPUT_KEY *Output 977 ); 978 979 /** 980 Clarify whether FIFO buffer is empty. 981 982 @param EfiKeyFiFo Pointer to instance of EFI_KEY_FIFO. 983 984 @retval TRUE If FIFO buffer is empty. 985 @retval FALSE If FIFO buffer is not empty. 986 987 **/ 988 BOOLEAN 989 IsEfiKeyFiFoForNotifyEmpty ( 990 IN EFI_KEY_FIFO *EfiKeyFiFo 991 ); 992 993 /** 994 Clarify whether FIFO buffer is full. 995 996 @param EfiKeyFiFo Pointer to instance of EFI_KEY_FIFO. 997 998 @retval TRUE If FIFO buffer is full. 999 @retval FALSE If FIFO buffer is not full. 1000 1001 **/ 1002 BOOLEAN 1003 IsEfiKeyFiFoForNotifyFull ( 1004 EFI_KEY_FIFO *EfiKeyFiFo 1005 ); 1006 1007 /** 1008 Insert one pre-fetched key into the FIFO buffer. 1009 1010 @param TerminalDevice Terminal driver private structure. 1011 @param Key The key will be input. 1012 1013 @retval TRUE If insert successfully. 1014 @retval FALSE If FIFO buffer is full before key insertion, 1015 and the key is lost. 1016 1017 **/ 1018 BOOLEAN 1019 EfiKeyFiFoInsertOneKey ( 1020 TERMINAL_DEV *TerminalDevice, 1021 EFI_INPUT_KEY *Key 1022 ); 1023 1024 /** 1025 Remove one pre-fetched key out of the FIFO buffer. 1026 1027 @param TerminalDevice Terminal driver private structure. 1028 @param Output The key will be removed. 1029 1030 @retval TRUE If insert successfully. 1031 @retval FALSE If FIFO buffer is empty before remove operation. 1032 1033 **/ 1034 BOOLEAN 1035 EfiKeyFiFoRemoveOneKey ( 1036 TERMINAL_DEV *TerminalDevice, 1037 EFI_INPUT_KEY *Output 1038 ); 1039 1040 /** 1041 Clarify whether FIFO buffer is empty. 1042 1043 @param TerminalDevice Terminal driver private structure 1044 1045 @retval TRUE If FIFO buffer is empty. 1046 @retval FALSE If FIFO buffer is not empty. 1047 1048 **/ 1049 BOOLEAN 1050 IsEfiKeyFiFoEmpty ( 1051 TERMINAL_DEV *TerminalDevice 1052 ); 1053 1054 /** 1055 Clarify whether FIFO buffer is full. 1056 1057 @param TerminalDevice Terminal driver private structure 1058 1059 @retval TRUE If FIFO buffer is full. 1060 @retval FALSE If FIFO buffer is not full. 1061 1062 **/ 1063 BOOLEAN 1064 IsEfiKeyFiFoFull ( 1065 TERMINAL_DEV *TerminalDevice 1066 ); 1067 1068 /** 1069 Insert one pre-fetched key into the Unicode FIFO buffer. 1070 1071 @param TerminalDevice Terminal driver private structure. 1072 @param Input The key will be input. 1073 1074 @retval TRUE If insert successfully. 1075 @retval FALSE If Unicode FIFO buffer is full before key insertion, 1076 and the key is lost. 1077 1078 **/ 1079 BOOLEAN 1080 UnicodeFiFoInsertOneKey ( 1081 TERMINAL_DEV *TerminalDevice, 1082 UINT16 Input 1083 ); 1084 1085 /** 1086 Remove one pre-fetched key out of the Unicode FIFO buffer. 1087 The caller should guarantee that Unicode FIFO buffer is not empty 1088 by IsUnicodeFiFoEmpty (). 1089 1090 @param TerminalDevice Terminal driver private structure. 1091 @param Output The key will be removed. 1092 1093 **/ 1094 VOID 1095 UnicodeFiFoRemoveOneKey ( 1096 TERMINAL_DEV *TerminalDevice, 1097 UINT16 *Output 1098 ); 1099 1100 /** 1101 Clarify whether Unicode FIFO buffer is empty. 1102 1103 @param TerminalDevice Terminal driver private structure 1104 1105 @retval TRUE If Unicode FIFO buffer is empty. 1106 @retval FALSE If Unicode FIFO buffer is not empty. 1107 1108 **/ 1109 BOOLEAN 1110 IsUnicodeFiFoEmpty ( 1111 TERMINAL_DEV *TerminalDevice 1112 ); 1113 1114 /** 1115 Clarify whether Unicode FIFO buffer is full. 1116 1117 @param TerminalDevice Terminal driver private structure 1118 1119 @retval TRUE If Unicode FIFO buffer is full. 1120 @retval FALSE If Unicode FIFO buffer is not full. 1121 1122 **/ 1123 BOOLEAN 1124 IsUnicodeFiFoFull ( 1125 TERMINAL_DEV *TerminalDevice 1126 ); 1127 1128 1129 /** 1130 Translate raw data into Unicode (according to different encode), and 1131 translate Unicode into key information. (according to different standard). 1132 1133 @param TerminalDevice Terminal driver private structure. 1134 1135 **/ 1136 VOID 1137 TranslateRawDataToEfiKey ( 1138 IN TERMINAL_DEV *TerminalDevice 1139 ); 1140 1141 // 1142 // internal functions for PC ANSI 1143 // 1144 1145 /** 1146 Translate all raw data in the Raw FIFI into unicode, and insert 1147 them into Unicode FIFO. 1148 1149 @param TerminalDevice The terminal device. 1150 1151 **/ 1152 VOID 1153 AnsiRawDataToUnicode ( 1154 IN TERMINAL_DEV *TerminalDevice 1155 ); 1156 1157 /** 1158 Converts a stream of Unicode characters from a terminal input device into EFI Keys that 1159 can be read through the Simple Input Protocol. 1160 1161 The table below shows the keyboard input mappings that this function supports. 1162 If the ESC sequence listed in one of the columns is presented, then it is translated 1163 into the coorespoding EFI Scan Code. If a matching sequence is not found, then the raw 1164 key strokes are converted into EFI Keys. 1165 1166 2 seconds are allowed for an ESC sequence to be completed. If the ESC sequence is not 1167 completed in 2 seconds, then the raw key strokes of the partial ESC sequence are 1168 converted into EFI Keys. 1169 There is one special input sequence that will force the system to reset. 1170 This is ESC R ESC r ESC R. 1171 1172 Symbols used in table below 1173 =========================== 1174 ESC = 0x1B 1175 CSI = 0x9B 1176 DEL = 0x7f 1177 ^ = CTRL 1178 +=========+======+===========+==========+==========+ 1179 | | EFI | UEFI 2.0 | | | 1180 | | Scan | | VT100+ | | 1181 | KEY | Code | PC ANSI | VTUTF8 | VT100 | 1182 +=========+======+===========+==========+==========+ 1183 | NULL | 0x00 | | | | 1184 | UP | 0x01 | ESC [ A | ESC [ A | ESC [ A | 1185 | DOWN | 0x02 | ESC [ B | ESC [ B | ESC [ B | 1186 | RIGHT | 0x03 | ESC [ C | ESC [ C | ESC [ C | 1187 | LEFT | 0x04 | ESC [ D | ESC [ D | ESC [ D | 1188 | HOME | 0x05 | ESC [ H | ESC h | ESC [ H | 1189 | END | 0x06 | ESC [ F | ESC k | ESC [ K | 1190 | INSERT | 0x07 | ESC [ @ | ESC + | ESC [ @ | 1191 | | | ESC [ L | | ESC [ L | 1192 | DELETE | 0x08 | ESC [ X | ESC - | ESC [ P | 1193 | PG UP | 0x09 | ESC [ I | ESC ? | ESC [ V | 1194 | | | | | ESC [ ? | 1195 | PG DOWN | 0x0A | ESC [ G | ESC / | ESC [ U | 1196 | | | | | ESC [ / | 1197 | F1 | 0x0B | ESC [ M | ESC 1 | ESC O P | 1198 | F2 | 0x0C | ESC [ N | ESC 2 | ESC O Q | 1199 | F3 | 0x0D | ESC [ O | ESC 3 | ESC O w | 1200 | F4 | 0x0E | ESC [ P | ESC 4 | ESC O x | 1201 | F5 | 0x0F | ESC [ Q | ESC 5 | ESC O t | 1202 | F6 | 0x10 | ESC [ R | ESC 6 | ESC O u | 1203 | F7 | 0x11 | ESC [ S | ESC 7 | ESC O q | 1204 | F8 | 0x12 | ESC [ T | ESC 8 | ESC O r | 1205 | F9 | 0x13 | ESC [ U | ESC 9 | ESC O p | 1206 | F10 | 0x14 | ESC [ V | ESC 0 | ESC O M | 1207 | Escape | 0x17 | ESC | ESC | ESC | 1208 | F11 | 0x15 | | ESC ! | | 1209 | F12 | 0x16 | | ESC @ | | 1210 +=========+======+===========+==========+==========+ 1211 1212 Special Mappings 1213 ================ 1214 ESC R ESC r ESC R = Reset System 1215 1216 1217 @param TerminalDevice The terminal device to use to translate raw input into EFI Keys 1218 1219 **/ 1220 VOID 1221 UnicodeToEfiKey ( 1222 IN TERMINAL_DEV *TerminalDevice 1223 ); 1224 1225 /** 1226 Check if input string is valid Ascii string, valid EFI control characters 1227 or valid text graphics. 1228 1229 @param TerminalDevice The terminal device. 1230 @param WString The input string. 1231 1232 @retval EFI_UNSUPPORTED If not all input characters are valid. 1233 @retval EFI_SUCCESS If all input characters are valid. 1234 1235 **/ 1236 EFI_STATUS 1237 AnsiTestString ( 1238 IN TERMINAL_DEV *TerminalDevice, 1239 IN CHAR16 *WString 1240 ); 1241 1242 // 1243 // internal functions for VTUTF8 1244 // 1245 1246 /** 1247 Translate all VT-UTF8 characters in the Raw FIFI into unicode characters, 1248 and insert them into Unicode FIFO. 1249 1250 @param VtUtf8Device The terminal device. 1251 1252 **/ 1253 VOID 1254 VTUTF8RawDataToUnicode ( 1255 IN TERMINAL_DEV *VtUtf8Device 1256 ); 1257 1258 /** 1259 Check if input string is valid VT-UTF8 string. 1260 1261 @param TerminalDevice The terminal device. 1262 @param WString The input string. 1263 1264 @retval EFI_SUCCESS If all input characters are valid. 1265 1266 **/ 1267 EFI_STATUS 1268 VTUTF8TestString ( 1269 IN TERMINAL_DEV *TerminalDevice, 1270 IN CHAR16 *WString 1271 ); 1272 1273 /** 1274 Translate one Unicode character into VT-UTF8 characters. 1275 1276 UTF8 Encoding Table 1277 Bits per Character | Unicode Character Range | Unicode Binary Encoding | UTF8 Binary Encoding 1278 0-7 | 0x0000 - 0x007F | 00000000 0xxxxxxx | 0xxxxxxx 1279 8-11 | 0x0080 - 0x07FF | 00000xxx xxxxxxxx | 110xxxxx 10xxxxxx 1280 12-16 | 0x0800 - 0xFFFF | xxxxxxxx xxxxxxxx | 1110xxxx 10xxxxxx 10xxxxxx 1281 1282 1283 @param Unicode Unicode character need translating. 1284 @param Utf8Char Return VT-UTF8 character set. 1285 @param ValidBytes The count of valid VT-UTF8 characters. If 1286 ValidBytes is zero, no valid VT-UTF8 returned. 1287 1288 **/ 1289 VOID 1290 UnicodeToUtf8 ( 1291 IN CHAR16 Unicode, 1292 OUT UTF8_CHAR *Utf8Char, 1293 OUT UINT8 *ValidBytes 1294 ); 1295 1296 /** 1297 Get one valid VT-UTF8 characters set from Raw Data FIFO. 1298 1299 @param Utf8Device The terminal device. 1300 @param Utf8Char Returned valid VT-UTF8 characters set. 1301 @param ValidBytes The count of returned VT-VTF8 characters. 1302 If ValidBytes is zero, no valid VT-UTF8 returned. 1303 1304 **/ 1305 VOID 1306 GetOneValidUtf8Char ( 1307 IN TERMINAL_DEV *Utf8Device, 1308 OUT UTF8_CHAR *Utf8Char, 1309 OUT UINT8 *ValidBytes 1310 ); 1311 1312 /** 1313 Translate VT-UTF8 characters into one Unicode character. 1314 1315 UTF8 Encoding Table 1316 Bits per Character | Unicode Character Range | Unicode Binary Encoding | UTF8 Binary Encoding 1317 0-7 | 0x0000 - 0x007F | 00000000 0xxxxxxx | 0xxxxxxx 1318 8-11 | 0x0080 - 0x07FF | 00000xxx xxxxxxxx | 110xxxxx 10xxxxxx 1319 12-16 | 0x0800 - 0xFFFF | xxxxxxxx xxxxxxxx | 1110xxxx 10xxxxxx 10xxxxxx 1320 1321 1322 @param Utf8Char VT-UTF8 character set needs translating. 1323 @param ValidBytes The count of valid VT-UTF8 characters. 1324 @param UnicodeChar Returned unicode character. 1325 1326 **/ 1327 VOID 1328 Utf8ToUnicode ( 1329 IN UTF8_CHAR Utf8Char, 1330 IN UINT8 ValidBytes, 1331 OUT CHAR16 *UnicodeChar 1332 ); 1333 1334 // 1335 // functions for boxdraw unicode 1336 // 1337 1338 /** 1339 Detects if a Unicode char is for Box Drawing text graphics. 1340 1341 @param Graphic Unicode char to test. 1342 @param PcAnsi Optional pointer to return PCANSI equivalent of 1343 Graphic. 1344 @param Ascii Optional pointer to return ASCII equivalent of 1345 Graphic. 1346 1347 @retval TRUE If Graphic is a supported Unicode Box Drawing character. 1348 1349 **/ 1350 BOOLEAN 1351 TerminalIsValidTextGraphics ( 1352 IN CHAR16 Graphic, 1353 OUT CHAR8 *PcAnsi, OPTIONAL 1354 OUT CHAR8 *Ascii OPTIONAL 1355 ); 1356 1357 /** 1358 Detects if a valid ASCII char. 1359 1360 @param Ascii An ASCII character. 1361 1362 @retval TRUE If it is a valid ASCII character. 1363 @retval FALSE If it is not a valid ASCII character. 1364 1365 **/ 1366 BOOLEAN 1367 TerminalIsValidAscii ( 1368 IN CHAR16 Ascii 1369 ); 1370 1371 /** 1372 Detects if a valid EFI control character. 1373 1374 @param CharC An input EFI Control character. 1375 1376 @retval TRUE If it is a valid EFI control character. 1377 @retval FALSE If it is not a valid EFI control character. 1378 1379 **/ 1380 BOOLEAN 1381 TerminalIsValidEfiCntlChar ( 1382 IN CHAR16 CharC 1383 ); 1384 1385 /** 1386 Check if the device supports hot-plug through its device path. 1387 1388 This function could be updated to check more types of Hot Plug devices. 1389 Currently, it checks USB and PCCard device. 1390 1391 @param DevicePath Pointer to device's device path. 1392 1393 @retval TRUE The devcie is a hot-plug device 1394 @retval FALSE The devcie is not a hot-plug device. 1395 1396 **/ 1397 BOOLEAN 1398 IsHotPlugDevice ( 1399 IN EFI_DEVICE_PATH_PROTOCOL *DevicePath 1400 ); 1401 1402 /** 1403 Timer handler to poll the key from serial. 1404 1405 @param Event Indicates the event that invoke this function. 1406 @param Context Indicates the calling context. 1407 **/ 1408 VOID 1409 EFIAPI 1410 TerminalConInTimerHandler ( 1411 IN EFI_EVENT Event, 1412 IN VOID *Context 1413 ); 1414 1415 1416 /** 1417 Process key notify. 1418 1419 @param Event Indicates the event that invoke this function. 1420 @param Context Indicates the calling context. 1421 **/ 1422 VOID 1423 EFIAPI 1424 KeyNotifyProcessHandler ( 1425 IN EFI_EVENT Event, 1426 IN VOID *Context 1427 ); 1428 1429 #endif 1430