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878ddf1f | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | Terminal.c\r | |
15 | \r | |
16 | Abstract: \r | |
17 | \r | |
18 | Revision History:\r | |
19 | \r | |
20 | --*/\r | |
21 | \r | |
22 | \r | |
23 | #include "Terminal.h"\r | |
878ddf1f | 24 | \r |
25 | //\r | |
26 | // Function Prototypes\r | |
27 | //\r | |
28 | EFI_STATUS\r | |
29 | EFIAPI\r | |
30 | TerminalDriverBindingSupported (\r | |
31 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
32 | IN EFI_HANDLE Controller,\r | |
33 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
34 | );\r | |
35 | \r | |
36 | EFI_STATUS\r | |
37 | EFIAPI\r | |
38 | TerminalDriverBindingStart (\r | |
39 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
40 | IN EFI_HANDLE Controller,\r | |
41 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
42 | );\r | |
43 | \r | |
44 | EFI_STATUS\r | |
45 | EFIAPI\r | |
46 | TerminalDriverBindingStop (\r | |
47 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
48 | IN EFI_HANDLE Controller,\r | |
49 | IN UINTN NumberOfChildren,\r | |
50 | IN EFI_HANDLE *ChildHandleBuffer\r | |
51 | );\r | |
52 | \r | |
53 | //\r | |
54 | // Globals\r | |
55 | //\r | |
56 | EFI_DRIVER_BINDING_PROTOCOL gTerminalDriverBinding = {\r | |
57 | TerminalDriverBindingSupported,\r | |
58 | TerminalDriverBindingStart,\r | |
59 | TerminalDriverBindingStop,\r | |
60 | 0x10,\r | |
61 | NULL,\r | |
62 | NULL\r | |
63 | };\r | |
64 | \r | |
65 | \r | |
66 | EFI_STATUS\r | |
67 | EFIAPI\r | |
68 | TerminalDriverBindingSupported (\r | |
69 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
70 | IN EFI_HANDLE Controller,\r | |
71 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
72 | )\r | |
73 | {\r | |
74 | EFI_STATUS Status;\r | |
75 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
76 | EFI_SERIAL_IO_PROTOCOL *SerialIo;\r | |
77 | VENDOR_DEVICE_PATH *Node;\r | |
78 | \r | |
79 | //\r | |
80 | // If remaining device path is not NULL, then make sure it is a\r | |
81 | // device path that describes a terminal communications protocol.\r | |
82 | //\r | |
83 | if (RemainingDevicePath != NULL) {\r | |
84 | \r | |
85 | Node = (VENDOR_DEVICE_PATH *) RemainingDevicePath;\r | |
86 | \r | |
87 | if (Node->Header.Type != MESSAGING_DEVICE_PATH ||\r | |
88 | Node->Header.SubType != MSG_VENDOR_DP ||\r | |
89 | DevicePathNodeLength(&Node->Header) != sizeof(VENDOR_DEVICE_PATH)) {\r | |
90 | \r | |
91 | return EFI_UNSUPPORTED;\r | |
92 | \r | |
93 | }\r | |
94 | //\r | |
95 | // only supports PC ANSI, VT100, VT100+ and VT-UTF8 terminal types\r | |
96 | //\r | |
97 | if (!CompareGuid (&Node->Guid, &gEfiPcAnsiGuid) &&\r | |
98 | !CompareGuid (&Node->Guid, &gEfiVT100Guid) &&\r | |
99 | !CompareGuid (&Node->Guid, &gEfiVT100PlusGuid) &&\r | |
100 | !CompareGuid (&Node->Guid, &gEfiVTUTF8Guid)) {\r | |
101 | \r | |
102 | return EFI_UNSUPPORTED;\r | |
103 | }\r | |
104 | }\r | |
105 | //\r | |
106 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
107 | //\r | |
108 | Status = gBS->OpenProtocol (\r | |
109 | Controller,\r | |
110 | &gEfiDevicePathProtocolGuid,\r | |
111 | (VOID **) &ParentDevicePath,\r | |
112 | This->DriverBindingHandle,\r | |
113 | Controller,\r | |
114 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
115 | );\r | |
116 | if (Status == EFI_ALREADY_STARTED) {\r | |
117 | return EFI_SUCCESS;\r | |
118 | }\r | |
119 | \r | |
120 | if (EFI_ERROR (Status)) {\r | |
121 | return Status;\r | |
122 | }\r | |
123 | \r | |
124 | gBS->CloseProtocol (\r | |
125 | Controller,\r | |
126 | &gEfiDevicePathProtocolGuid,\r | |
127 | This->DriverBindingHandle,\r | |
128 | Controller\r | |
129 | );\r | |
130 | \r | |
131 | //\r | |
132 | // The Controller must support the Serial I/O Protocol.\r | |
133 | // This driver is a bus driver with at most 1 child device, so it is\r | |
134 | // ok for it to be already started.\r | |
135 | //\r | |
136 | Status = gBS->OpenProtocol (\r | |
137 | Controller,\r | |
138 | &gEfiSerialIoProtocolGuid,\r | |
139 | (VOID **) &SerialIo,\r | |
140 | This->DriverBindingHandle,\r | |
141 | Controller,\r | |
142 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
143 | );\r | |
144 | if (Status == EFI_ALREADY_STARTED) {\r | |
145 | return EFI_SUCCESS;\r | |
146 | }\r | |
147 | \r | |
148 | if (EFI_ERROR (Status)) {\r | |
149 | return Status;\r | |
150 | }\r | |
151 | //\r | |
152 | // Close the I/O Abstraction(s) used to perform the supported test\r | |
153 | //\r | |
154 | gBS->CloseProtocol (\r | |
155 | Controller,\r | |
156 | &gEfiSerialIoProtocolGuid,\r | |
157 | This->DriverBindingHandle,\r | |
158 | Controller\r | |
159 | );\r | |
160 | \r | |
161 | return Status;\r | |
162 | }\r | |
163 | \r | |
164 | EFI_STATUS\r | |
165 | EFIAPI\r | |
166 | TerminalDriverBindingStart (\r | |
167 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
168 | IN EFI_HANDLE Controller,\r | |
169 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
170 | )\r | |
171 | /*++\r | |
172 | \r | |
173 | Routine Description:\r | |
174 | \r | |
175 | Start the controller.\r | |
176 | \r | |
177 | Arguments:\r | |
178 | \r | |
179 | This - A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
180 | Controller - The handle of the controller to start.\r | |
181 | RemainingDevicePath - A pointer to the remaining portion of a devcie path.\r | |
182 | \r | |
183 | Returns:\r | |
184 | \r | |
185 | EFI_SUCCESS.\r | |
186 | \r | |
187 | --*/\r | |
188 | {\r | |
189 | EFI_STATUS Status;\r | |
190 | EFI_SERIAL_IO_PROTOCOL *SerialIo;\r | |
191 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
192 | VENDOR_DEVICE_PATH *Node;\r | |
193 | VENDOR_DEVICE_PATH *DefaultNode;\r | |
194 | EFI_SERIAL_IO_MODE *Mode;\r | |
195 | UINTN SerialInTimeOut;\r | |
196 | TERMINAL_DEV *TerminalDevice;\r | |
197 | UINT8 TerminalType;\r | |
198 | EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;\r | |
199 | UINTN EntryCount;\r | |
200 | UINTN Index;\r | |
201 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
202 | \r | |
203 | TerminalDevice = NULL;\r | |
204 | DefaultNode = NULL;\r | |
205 | //\r | |
206 | // Get the Device Path Protocol to build the device path of the child device\r | |
207 | //\r | |
208 | Status = gBS->OpenProtocol (\r | |
209 | Controller,\r | |
210 | &gEfiDevicePathProtocolGuid,\r | |
211 | (VOID **) &ParentDevicePath,\r | |
212 | This->DriverBindingHandle,\r | |
213 | Controller,\r | |
214 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
215 | );\r | |
216 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
217 | return Status;\r | |
218 | }\r | |
219 | //\r | |
220 | // Report that the remote terminal is being enabled\r | |
221 | //\r | |
222 | DevicePath = ParentDevicePath;\r | |
223 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
224 | EFI_PROGRESS_CODE,\r | |
225 | EFI_PERIPHERAL_REMOTE_CONSOLE | EFI_P_PC_ENABLE,\r | |
226 | DevicePath\r | |
227 | );\r | |
228 | \r | |
229 | //\r | |
230 | // Open the Serial I/O Protocol BY_DRIVER. It might already be started.\r | |
231 | //\r | |
232 | Status = gBS->OpenProtocol (\r | |
233 | Controller,\r | |
234 | &gEfiSerialIoProtocolGuid,\r | |
235 | (VOID **) &SerialIo,\r | |
236 | This->DriverBindingHandle,\r | |
237 | Controller,\r | |
238 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
239 | );\r | |
240 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
241 | return Status;\r | |
242 | }\r | |
243 | \r | |
244 | if (Status != EFI_ALREADY_STARTED) {\r | |
245 | //\r | |
246 | // If Serial I/O is not already open by this driver, then tag the handle\r | |
247 | // with the Terminal Driver GUID and update the ConInDev, ConOutDev, and\r | |
248 | // StdErrDev variables with the list of possible terminal types on this\r | |
249 | // serial port.\r | |
250 | //\r | |
251 | Status = gBS->OpenProtocol (\r | |
252 | Controller,\r | |
253 | &gEfiCallerIdGuid,\r | |
254 | NULL,\r | |
255 | This->DriverBindingHandle,\r | |
256 | Controller,\r | |
257 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
258 | );\r | |
259 | if (EFI_ERROR (Status)) {\r | |
260 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
261 | &Controller,\r | |
262 | &gEfiCallerIdGuid,\r | |
263 | DuplicateDevicePath (ParentDevicePath),\r | |
264 | NULL\r | |
265 | );\r | |
266 | if (EFI_ERROR (Status)) {\r | |
267 | goto Error;\r | |
268 | }\r | |
269 | //\r | |
270 | // if the serial device is a hot plug device, do not update the\r | |
271 | // ConInDev, ConOutDev, and StdErrDev variables.\r | |
272 | //\r | |
273 | Status = gBS->OpenProtocol (\r | |
274 | Controller,\r | |
275 | &gEfiHotPlugDeviceGuid,\r | |
276 | NULL,\r | |
277 | This->DriverBindingHandle,\r | |
278 | Controller,\r | |
279 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
280 | );\r | |
281 | if (EFI_ERROR (Status)) {\r | |
282 | TerminalUpdateConsoleDevVariable ((CHAR16 *)VarConsoleInpDev, ParentDevicePath);\r | |
283 | TerminalUpdateConsoleDevVariable ((CHAR16 *)VarConsoleOutDev, ParentDevicePath);\r | |
284 | TerminalUpdateConsoleDevVariable ((CHAR16 *)VarErrorOutDev, ParentDevicePath);\r | |
285 | }\r | |
286 | }\r | |
287 | }\r | |
288 | //\r | |
289 | // Make sure a child handle does not already exist. This driver can only\r | |
290 | // produce one child per serial port.\r | |
291 | //\r | |
292 | Status = gBS->OpenProtocolInformation (\r | |
293 | Controller,\r | |
294 | &gEfiSerialIoProtocolGuid,\r | |
295 | &OpenInfoBuffer,\r | |
296 | &EntryCount\r | |
297 | );\r | |
298 | if (!EFI_ERROR (Status)) {\r | |
299 | Status = EFI_SUCCESS;\r | |
300 | for (Index = 0; Index < EntryCount; Index++) {\r | |
301 | if (OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) {\r | |
302 | Status = EFI_ALREADY_STARTED;\r | |
303 | }\r | |
304 | }\r | |
305 | \r | |
306 | gBS->FreePool (OpenInfoBuffer);\r | |
307 | if (EFI_ERROR (Status)) {\r | |
308 | return Status;\r | |
309 | }\r | |
310 | }\r | |
311 | //\r | |
312 | // If RemainingDevicePath is NULL, then create default device path node\r | |
313 | //\r | |
314 | if (RemainingDevicePath == NULL) {\r | |
315 | DefaultNode = AllocatePool (sizeof (VENDOR_DEVICE_PATH));\r | |
316 | if (DefaultNode == NULL) {\r | |
317 | Status = EFI_OUT_OF_RESOURCES;\r | |
318 | goto Error;\r | |
319 | }\r | |
320 | \r | |
321 | CopyMem (&DefaultNode->Guid, &gEfiPcAnsiGuid, sizeof (EFI_GUID));\r | |
322 | RemainingDevicePath = (EFI_DEVICE_PATH_PROTOCOL*) DefaultNode;\r | |
323 | } \r | |
324 | //\r | |
325 | // Use the RemainingDevicePath to determine the terminal type\r | |
326 | //\r | |
327 | Node = (VENDOR_DEVICE_PATH *) RemainingDevicePath;\r | |
328 | \r | |
329 | if (CompareGuid (&Node->Guid, &gEfiPcAnsiGuid)) {\r | |
330 | \r | |
331 | TerminalType = PcAnsiType;\r | |
332 | \r | |
333 | } else if (CompareGuid (&Node->Guid, &gEfiVT100Guid)) {\r | |
334 | \r | |
335 | TerminalType = VT100Type;\r | |
336 | \r | |
337 | } else if (CompareGuid (&Node->Guid, &gEfiVT100PlusGuid)) {\r | |
338 | \r | |
339 | TerminalType = VT100PlusType;\r | |
340 | \r | |
341 | } else if (CompareGuid (&Node->Guid, &gEfiVTUTF8Guid)) {\r | |
342 | \r | |
343 | TerminalType = VTUTF8Type;\r | |
344 | \r | |
345 | } else {\r | |
346 | goto Error;\r | |
347 | }\r | |
348 | //\r | |
349 | // Initialize the Terminal Dev\r | |
350 | //\r | |
351 | TerminalDevice = AllocatePool (sizeof (TERMINAL_DEV));\r | |
352 | if (TerminalDevice == NULL) {\r | |
353 | Status = EFI_OUT_OF_RESOURCES;\r | |
354 | goto Error;\r | |
355 | }\r | |
356 | \r | |
357 | ZeroMem (TerminalDevice, sizeof (TERMINAL_DEV));\r | |
358 | \r | |
359 | TerminalDevice->Signature = TERMINAL_DEV_SIGNATURE;\r | |
360 | \r | |
361 | TerminalDevice->TerminalType = TerminalType;\r | |
362 | \r | |
363 | TerminalDevice->SerialIo = SerialIo;\r | |
364 | \r | |
365 | //\r | |
366 | // Simple Input Protocol\r | |
367 | //\r | |
368 | TerminalDevice->SimpleInput.Reset = TerminalConInReset;\r | |
369 | TerminalDevice->SimpleInput.ReadKeyStroke = TerminalConInReadKeyStroke;\r | |
370 | \r | |
371 | Status = gBS->CreateEvent (\r | |
372 | EFI_EVENT_NOTIFY_WAIT,\r | |
373 | EFI_TPL_NOTIFY,\r | |
374 | TerminalConInWaitForKey,\r | |
375 | &TerminalDevice->SimpleInput,\r | |
376 | &TerminalDevice->SimpleInput.WaitForKey\r | |
377 | );\r | |
378 | if (EFI_ERROR (Status)) {\r | |
379 | goto Error;\r | |
380 | }\r | |
381 | //\r | |
382 | // initialize the FIFO buffer used for accommodating\r | |
383 | // the pre-read pending characters\r | |
384 | //\r | |
385 | InitializeRawFiFo (TerminalDevice);\r | |
386 | InitializeUnicodeFiFo (TerminalDevice);\r | |
387 | InitializeEfiKeyFiFo (TerminalDevice);\r | |
388 | \r | |
389 | //\r | |
390 | // Set the timeout value of serial buffer for\r | |
391 | // keystroke response performance issue\r | |
392 | //\r | |
393 | Mode = TerminalDevice->SerialIo->Mode;\r | |
394 | \r | |
395 | SerialInTimeOut = 0;\r | |
396 | if (Mode->BaudRate != 0) {\r | |
397 | SerialInTimeOut = (1 + Mode->DataBits + Mode->StopBits) * 2 * 1000000 / (UINTN) Mode->BaudRate;\r | |
398 | }\r | |
399 | \r | |
400 | Status = TerminalDevice->SerialIo->SetAttributes (\r | |
401 | TerminalDevice->SerialIo,\r | |
402 | Mode->BaudRate,\r | |
403 | Mode->ReceiveFifoDepth,\r | |
404 | (UINT32) SerialInTimeOut,\r | |
405 | Mode->Parity,\r | |
406 | (UINT8) Mode->DataBits,\r | |
407 | Mode->StopBits\r | |
408 | );\r | |
409 | if (EFI_ERROR (Status)) {\r | |
410 | //\r | |
411 | // if set attributes operation fails, invalidate\r | |
412 | // the value of SerialInTimeOut,thus make it\r | |
413 | // inconsistent with the default timeout value\r | |
414 | // of serial buffer. This will invoke the recalculation\r | |
415 | // in the readkeystroke routine.\r | |
416 | //\r | |
417 | TerminalDevice->SerialInTimeOut = 0;\r | |
418 | } else {\r | |
419 | TerminalDevice->SerialInTimeOut = SerialInTimeOut;\r | |
420 | }\r | |
421 | //\r | |
422 | // Build the device path for the child device\r | |
423 | //\r | |
424 | Status = SetTerminalDevicePath (\r | |
425 | TerminalDevice->TerminalType,\r | |
426 | ParentDevicePath,\r | |
427 | &TerminalDevice->DevicePath\r | |
428 | );\r | |
429 | if (EFI_ERROR (Status)) {\r | |
430 | goto Error;\r | |
431 | }\r | |
432 | \r | |
433 | DevicePath = TerminalDevice->DevicePath;\r | |
434 | \r | |
435 | Status = TerminalDevice->SimpleInput.Reset (\r | |
436 | &TerminalDevice->SimpleInput,\r | |
437 | FALSE\r | |
438 | );\r | |
439 | if (EFI_ERROR (Status)) {\r | |
440 | //\r | |
441 | // Need to report Error Code first\r | |
442 | //\r | |
443 | goto ReportError;\r | |
444 | }\r | |
445 | //\r | |
446 | // Simple Text Output Protocol\r | |
447 | //\r | |
448 | TerminalDevice->SimpleTextOutput.Reset = TerminalConOutReset;\r | |
449 | TerminalDevice->SimpleTextOutput.OutputString = TerminalConOutOutputString;\r | |
450 | TerminalDevice->SimpleTextOutput.TestString = TerminalConOutTestString;\r | |
451 | TerminalDevice->SimpleTextOutput.QueryMode = TerminalConOutQueryMode;\r | |
452 | TerminalDevice->SimpleTextOutput.SetMode = TerminalConOutSetMode;\r | |
453 | TerminalDevice->SimpleTextOutput.SetAttribute = TerminalConOutSetAttribute;\r | |
454 | TerminalDevice->SimpleTextOutput.ClearScreen = TerminalConOutClearScreen;\r | |
455 | TerminalDevice->SimpleTextOutput.SetCursorPosition = TerminalConOutSetCursorPosition;\r | |
456 | TerminalDevice->SimpleTextOutput.EnableCursor = TerminalConOutEnableCursor;\r | |
457 | TerminalDevice->SimpleTextOutput.Mode = &TerminalDevice->SimpleTextOutputMode;\r | |
458 | \r | |
459 | TerminalDevice->SimpleTextOutputMode.MaxMode = 1;\r | |
460 | //\r | |
461 | // For terminal devices, cursor is always visible\r | |
462 | //\r | |
463 | TerminalDevice->SimpleTextOutputMode.CursorVisible = TRUE;\r | |
464 | TerminalDevice->SimpleTextOutputMode.Attribute = EFI_TEXT_ATTR (EFI_LIGHTGRAY, EFI_BLACK);\r | |
465 | \r | |
466 | Status = TerminalDevice->SimpleTextOutput.Reset (\r | |
467 | &TerminalDevice->SimpleTextOutput,\r | |
468 | FALSE\r | |
469 | );\r | |
470 | if (EFI_ERROR (Status)) {\r | |
471 | goto ReportError;\r | |
472 | }\r | |
473 | \r | |
474 | Status = TerminalDevice->SimpleTextOutput.SetMode (\r | |
475 | &TerminalDevice->SimpleTextOutput,\r | |
476 | 0\r | |
477 | );\r | |
478 | if (EFI_ERROR (Status)) {\r | |
479 | goto ReportError;\r | |
480 | }\r | |
481 | \r | |
482 | Status = TerminalDevice->SimpleTextOutput.EnableCursor (\r | |
483 | &TerminalDevice->SimpleTextOutput,\r | |
484 | TRUE\r | |
485 | );\r | |
486 | if (EFI_ERROR (Status)) {\r | |
487 | goto ReportError;\r | |
488 | }\r | |
489 | //\r | |
490 | //\r | |
491 | //\r | |
492 | TerminalDevice->InputState = INPUT_STATE_DEFAULT;\r | |
493 | TerminalDevice->ResetState = RESET_STATE_DEFAULT;\r | |
494 | \r | |
495 | Status = gBS->CreateEvent (\r | |
496 | EFI_EVENT_TIMER,\r | |
497 | EFI_TPL_CALLBACK,\r | |
498 | NULL,\r | |
499 | NULL,\r | |
500 | &TerminalDevice->TwoSecondTimeOut\r | |
501 | );\r | |
502 | \r | |
503 | //\r | |
504 | // Build the component name for the child device\r | |
505 | //\r | |
506 | TerminalDevice->ControllerNameTable = NULL;\r | |
507 | switch (TerminalDevice->TerminalType) {\r | |
508 | case PcAnsiType:\r | |
509 | AddUnicodeString (\r | |
510 | "eng",\r | |
511 | gTerminalComponentName.SupportedLanguages,\r | |
512 | &TerminalDevice->ControllerNameTable,\r | |
513 | (CHAR16 *)L"PC-ANSI Serial Console"\r | |
514 | );\r | |
515 | break;\r | |
516 | \r | |
517 | case VT100Type:\r | |
518 | AddUnicodeString (\r | |
519 | "eng",\r | |
520 | gTerminalComponentName.SupportedLanguages,\r | |
521 | &TerminalDevice->ControllerNameTable,\r | |
522 | (CHAR16 *)L"VT-100 Serial Console"\r | |
523 | );\r | |
524 | break;\r | |
525 | \r | |
526 | case VT100PlusType:\r | |
527 | AddUnicodeString (\r | |
528 | "eng",\r | |
529 | gTerminalComponentName.SupportedLanguages,\r | |
530 | &TerminalDevice->ControllerNameTable,\r | |
531 | (CHAR16 *)L"VT-100+ Serial Console"\r | |
532 | );\r | |
533 | break;\r | |
534 | \r | |
535 | case VTUTF8Type:\r | |
536 | AddUnicodeString (\r | |
537 | "eng",\r | |
538 | gTerminalComponentName.SupportedLanguages,\r | |
539 | &TerminalDevice->ControllerNameTable,\r | |
540 | (CHAR16 *)L"VT-UTF8 Serial Console"\r | |
541 | );\r | |
542 | break;\r | |
543 | }\r | |
544 | //\r | |
545 | // Install protocol interfaces for the serial device.\r | |
546 | //\r | |
547 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
548 | &TerminalDevice->Handle,\r | |
549 | &gEfiDevicePathProtocolGuid,\r | |
550 | TerminalDevice->DevicePath,\r | |
551 | &gEfiSimpleTextInProtocolGuid,\r | |
552 | &TerminalDevice->SimpleInput,\r | |
553 | &gEfiSimpleTextOutProtocolGuid,\r | |
554 | &TerminalDevice->SimpleTextOutput,\r | |
555 | NULL\r | |
556 | );\r | |
557 | if (EFI_ERROR (Status)) {\r | |
558 | goto Error;\r | |
559 | }\r | |
560 | //\r | |
561 | // if the serial device is a hot plug device, attaches the HotPlugGuid\r | |
562 | // onto the terminal device handle.\r | |
563 | //\r | |
564 | Status = gBS->OpenProtocol (\r | |
565 | Controller,\r | |
566 | &gEfiHotPlugDeviceGuid,\r | |
567 | NULL,\r | |
568 | This->DriverBindingHandle,\r | |
569 | Controller,\r | |
570 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
571 | );\r | |
572 | if (!EFI_ERROR (Status)) {\r | |
573 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
574 | &TerminalDevice->Handle,\r | |
575 | &gEfiHotPlugDeviceGuid,\r | |
576 | NULL,\r | |
577 | NULL\r | |
578 | );\r | |
579 | }\r | |
580 | //\r | |
581 | // Register the Parent-Child relationship via\r | |
582 | // EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r | |
583 | //\r | |
584 | Status = gBS->OpenProtocol (\r | |
585 | Controller,\r | |
586 | &gEfiSerialIoProtocolGuid,\r | |
587 | (VOID **) &TerminalDevice->SerialIo,\r | |
588 | This->DriverBindingHandle,\r | |
589 | TerminalDevice->Handle,\r | |
590 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
591 | );\r | |
592 | if (EFI_ERROR (Status)) {\r | |
593 | goto Error;\r | |
594 | }\r | |
595 | \r | |
596 | if (DefaultNode != NULL) {\r | |
597 | gBS->FreePool (DefaultNode);\r | |
598 | }\r | |
599 | \r | |
600 | return EFI_SUCCESS;\r | |
601 | \r | |
602 | ReportError:\r | |
603 | //\r | |
604 | // Report error code before exiting\r | |
605 | //\r | |
606 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
607 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
608 | EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_EC_CONTROLLER_ERROR,\r | |
609 | DevicePath\r | |
610 | );\r | |
611 | \r | |
612 | Error:\r | |
613 | //\r | |
614 | // Use the Stop() function to free all resources allocated in Start()\r | |
615 | //\r | |
616 | if (TerminalDevice != NULL) {\r | |
617 | \r | |
618 | if (TerminalDevice->Handle != NULL) {\r | |
619 | This->Stop (This, Controller, 1, &TerminalDevice->Handle);\r | |
620 | } else {\r | |
621 | \r | |
622 | if (TerminalDevice->TwoSecondTimeOut != NULL) {\r | |
623 | gBS->CloseEvent (TerminalDevice->TwoSecondTimeOut);\r | |
624 | }\r | |
625 | \r | |
626 | if (TerminalDevice->SimpleInput.WaitForKey != NULL) {\r | |
627 | gBS->CloseEvent (TerminalDevice->SimpleInput.WaitForKey);\r | |
628 | }\r | |
629 | \r | |
630 | if (TerminalDevice->ControllerNameTable != NULL) {\r | |
631 | FreeUnicodeStringTable (TerminalDevice->ControllerNameTable);\r | |
632 | }\r | |
633 | \r | |
634 | if (TerminalDevice->DevicePath != NULL) {\r | |
635 | gBS->FreePool (TerminalDevice->DevicePath);\r | |
636 | }\r | |
637 | \r | |
638 | gBS->FreePool (TerminalDevice);\r | |
639 | }\r | |
640 | }\r | |
641 | \r | |
642 | if (DefaultNode != NULL) {\r | |
643 | gBS->FreePool (DefaultNode);\r | |
644 | }\r | |
645 | \r | |
646 | This->Stop (This, Controller, 0, NULL);\r | |
647 | \r | |
648 | return Status;\r | |
649 | }\r | |
650 | \r | |
651 | EFI_STATUS\r | |
652 | EFIAPI\r | |
653 | TerminalDriverBindingStop (\r | |
654 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
655 | IN EFI_HANDLE Controller,\r | |
656 | IN UINTN NumberOfChildren,\r | |
657 | IN EFI_HANDLE *ChildHandleBuffer\r | |
658 | )\r | |
659 | /*++\r | |
660 | \r | |
661 | Routine Description:\r | |
662 | \r | |
663 | Stop a device controller.\r | |
664 | \r | |
665 | Arguments:\r | |
666 | \r | |
667 | This - A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
668 | Controller - A handle to the device being stopped.\r | |
669 | NumberOfChildren - The number of child device handles in ChildHandleBuffer.\r | |
670 | ChildHandleBuffer - An array of child handles to be freed.\r | |
671 | \r | |
672 | Returns:\r | |
673 | \r | |
674 | EFI_SUCCESS - Operation successful.\r | |
675 | EFI_DEVICE_ERROR - Devices error.\r | |
676 | \r | |
677 | --*/\r | |
678 | {\r | |
679 | EFI_STATUS Status;\r | |
680 | UINTN Index;\r | |
681 | BOOLEAN AllChildrenStopped;\r | |
682 | EFI_SIMPLE_TEXT_OUT_PROTOCOL *SimpleTextOutput;\r | |
683 | TERMINAL_DEV *TerminalDevice;\r | |
684 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
685 | EFI_SERIAL_IO_PROTOCOL *SerialIo;\r | |
686 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
687 | \r | |
688 | Status = gBS->HandleProtocol (\r | |
689 | Controller,\r | |
690 | &gEfiDevicePathProtocolGuid,\r | |
691 | (VOID **) &DevicePath\r | |
692 | );\r | |
693 | if (EFI_ERROR (Status)) {\r | |
694 | return Status;\r | |
695 | }\r | |
696 | //\r | |
697 | // Report that the remote terminal is being disabled\r | |
698 | //\r | |
699 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
700 | EFI_PROGRESS_CODE,\r | |
701 | EFI_PERIPHERAL_REMOTE_CONSOLE | EFI_P_PC_DISABLE,\r | |
702 | DevicePath\r | |
703 | );\r | |
704 | \r | |
705 | //\r | |
706 | // Complete all outstanding transactions to Controller.\r | |
707 | // Don't allow any new transaction to Controller to be started.\r | |
708 | //\r | |
709 | if (NumberOfChildren == 0) {\r | |
710 | //\r | |
711 | // Close the bus driver\r | |
712 | //\r | |
713 | Status = gBS->OpenProtocol (\r | |
714 | Controller,\r | |
715 | &gEfiCallerIdGuid,\r | |
716 | (VOID **) &ParentDevicePath,\r | |
717 | This->DriverBindingHandle,\r | |
718 | Controller,\r | |
719 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
720 | );\r | |
721 | if (!EFI_ERROR (Status)) {\r | |
722 | //\r | |
723 | // Remove Parent Device Path from\r | |
724 | // the Console Device Environment Variables\r | |
725 | //\r | |
726 | TerminalRemoveConsoleDevVariable ((CHAR16 *)VarConsoleInpDev, ParentDevicePath);\r | |
727 | TerminalRemoveConsoleDevVariable ((CHAR16 *)VarConsoleOutDev, ParentDevicePath);\r | |
728 | TerminalRemoveConsoleDevVariable ((CHAR16 *)VarErrorOutDev, ParentDevicePath);\r | |
729 | \r | |
730 | //\r | |
731 | // Uninstall the Terminal Driver's GUID Tag from the Serial controller\r | |
732 | //\r | |
733 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
734 | Controller,\r | |
735 | &gEfiCallerIdGuid,\r | |
736 | ParentDevicePath,\r | |
737 | NULL\r | |
738 | );\r | |
739 | \r | |
740 | //\r | |
741 | // Free the ParentDevicePath that was duplicated in Start()\r | |
742 | //\r | |
743 | if (!EFI_ERROR (Status)) {\r | |
744 | gBS->FreePool (ParentDevicePath);\r | |
745 | }\r | |
746 | }\r | |
747 | \r | |
748 | gBS->CloseProtocol (\r | |
749 | Controller,\r | |
750 | &gEfiSerialIoProtocolGuid,\r | |
751 | This->DriverBindingHandle,\r | |
752 | Controller\r | |
753 | );\r | |
754 | \r | |
755 | gBS->CloseProtocol (\r | |
756 | Controller,\r | |
757 | &gEfiDevicePathProtocolGuid,\r | |
758 | This->DriverBindingHandle,\r | |
759 | Controller\r | |
760 | );\r | |
761 | \r | |
762 | return EFI_SUCCESS;\r | |
763 | }\r | |
764 | \r | |
765 | AllChildrenStopped = TRUE;\r | |
766 | \r | |
767 | for (Index = 0; Index < NumberOfChildren; Index++) {\r | |
768 | \r | |
769 | Status = gBS->OpenProtocol (\r | |
770 | ChildHandleBuffer[Index],\r | |
771 | &gEfiSimpleTextOutProtocolGuid,\r | |
772 | (VOID **) &SimpleTextOutput,\r | |
773 | This->DriverBindingHandle,\r | |
774 | ChildHandleBuffer[Index],\r | |
775 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
776 | );\r | |
777 | if (!EFI_ERROR (Status)) {\r | |
778 | \r | |
779 | TerminalDevice = TERMINAL_CON_OUT_DEV_FROM_THIS (SimpleTextOutput);\r | |
780 | \r | |
781 | gBS->CloseProtocol (\r | |
782 | Controller,\r | |
783 | &gEfiSerialIoProtocolGuid,\r | |
784 | This->DriverBindingHandle,\r | |
785 | ChildHandleBuffer[Index]\r | |
786 | );\r | |
787 | \r | |
788 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
789 | ChildHandleBuffer[Index],\r | |
790 | &gEfiSimpleTextInProtocolGuid,\r | |
791 | &TerminalDevice->SimpleInput,\r | |
792 | &gEfiSimpleTextOutProtocolGuid,\r | |
793 | &TerminalDevice->SimpleTextOutput,\r | |
794 | &gEfiDevicePathProtocolGuid,\r | |
795 | TerminalDevice->DevicePath,\r | |
796 | NULL\r | |
797 | );\r | |
798 | if (EFI_ERROR (Status)) {\r | |
799 | gBS->OpenProtocol (\r | |
800 | Controller,\r | |
801 | &gEfiSerialIoProtocolGuid,\r | |
802 | (VOID **) &SerialIo,\r | |
803 | This->DriverBindingHandle,\r | |
804 | ChildHandleBuffer[Index],\r | |
805 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
806 | );\r | |
807 | } else {\r | |
808 | \r | |
809 | if (TerminalDevice->ControllerNameTable != NULL) {\r | |
810 | FreeUnicodeStringTable (TerminalDevice->ControllerNameTable);\r | |
811 | }\r | |
812 | \r | |
813 | Status = gBS->OpenProtocol (\r | |
814 | ChildHandleBuffer[Index],\r | |
815 | &gEfiHotPlugDeviceGuid,\r | |
816 | NULL,\r | |
817 | This->DriverBindingHandle,\r | |
818 | Controller,\r | |
819 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
820 | );\r | |
821 | if (!EFI_ERROR (Status)) {\r | |
822 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
823 | ChildHandleBuffer[Index],\r | |
824 | &gEfiHotPlugDeviceGuid,\r | |
825 | NULL,\r | |
826 | NULL\r | |
827 | );\r | |
828 | } else {\r | |
829 | Status = EFI_SUCCESS;\r | |
830 | }\r | |
831 | \r | |
832 | gBS->CloseEvent (TerminalDevice->TwoSecondTimeOut);\r | |
833 | gBS->CloseEvent (TerminalDevice->SimpleInput.WaitForKey);\r | |
834 | gBS->FreePool (TerminalDevice->DevicePath);\r | |
835 | gBS->FreePool (TerminalDevice);\r | |
836 | }\r | |
837 | }\r | |
838 | \r | |
839 | if (EFI_ERROR (Status)) {\r | |
840 | AllChildrenStopped = FALSE;\r | |
841 | }\r | |
842 | }\r | |
843 | \r | |
844 | if (!AllChildrenStopped) {\r | |
845 | return EFI_DEVICE_ERROR;\r | |
846 | }\r | |
847 | \r | |
848 | return EFI_SUCCESS;\r | |
849 | }\r | |
850 | \r | |
851 | VOID\r | |
852 | TerminalUpdateConsoleDevVariable (\r | |
853 | IN CHAR16 *VariableName,\r | |
854 | IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath\r | |
855 | )\r | |
856 | {\r | |
857 | EFI_STATUS Status;\r | |
858 | UINTN VariableSize;\r | |
859 | UINT8 TerminalType;\r | |
860 | EFI_DEVICE_PATH_PROTOCOL *Variable;\r | |
861 | EFI_DEVICE_PATH_PROTOCOL *NewVariable;\r | |
862 | EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r | |
863 | \r | |
864 | Variable = NULL;\r | |
865 | \r | |
866 | //\r | |
867 | // Get global variable and its size according to the name given.\r | |
868 | //\r | |
869 | Variable = TerminalGetVariableAndSize (\r | |
870 | VariableName,\r | |
871 | &gEfiGlobalVariableGuid,\r | |
872 | &VariableSize\r | |
873 | );\r | |
874 | //\r | |
875 | // Append terminal device path onto the variable.\r | |
876 | //\r | |
877 | for (TerminalType = PcAnsiType; TerminalType <= VTUTF8Type; TerminalType++) {\r | |
878 | SetTerminalDevicePath (TerminalType, ParentDevicePath, &TempDevicePath);\r | |
879 | NewVariable = AppendDevicePathInstance (Variable, TempDevicePath);\r | |
880 | if (Variable != NULL) {\r | |
881 | gBS->FreePool (Variable);\r | |
882 | }\r | |
883 | \r | |
884 | if (TempDevicePath != NULL) {\r | |
885 | gBS->FreePool (TempDevicePath);\r | |
886 | }\r | |
887 | \r | |
888 | Variable = NewVariable;\r | |
889 | }\r | |
890 | \r | |
891 | VariableSize = GetDevicePathSize (Variable);\r | |
892 | \r | |
893 | Status = gRT->SetVariable (\r | |
894 | VariableName,\r | |
895 | &gEfiGlobalVariableGuid,\r | |
896 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
897 | VariableSize,\r | |
898 | Variable\r | |
899 | );\r | |
900 | gBS->FreePool (Variable);\r | |
901 | \r | |
902 | return ;\r | |
903 | }\r | |
904 | \r | |
905 | VOID\r | |
906 | TerminalRemoveConsoleDevVariable (\r | |
907 | IN CHAR16 *VariableName,\r | |
908 | IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath\r | |
909 | )\r | |
910 | /*++\r | |
911 | \r | |
912 | Routine Description:\r | |
913 | \r | |
914 | Remove console device variable.\r | |
915 | \r | |
916 | Arguments:\r | |
917 | \r | |
918 | VariableName - A pointer to the variable name.\r | |
919 | ParentDevicePath - A pointer to the parent device path.\r | |
920 | \r | |
921 | Returns:\r | |
922 | \r | |
923 | --*/\r | |
924 | {\r | |
925 | EFI_STATUS Status;\r | |
926 | BOOLEAN FoundOne;\r | |
927 | BOOLEAN Match;\r | |
928 | UINTN VariableSize;\r | |
929 | UINTN InstanceSize;\r | |
930 | UINT8 TerminalType;\r | |
931 | EFI_DEVICE_PATH_PROTOCOL *Instance;\r | |
932 | EFI_DEVICE_PATH_PROTOCOL *Variable;\r | |
933 | EFI_DEVICE_PATH_PROTOCOL *OriginalVariable;\r | |
934 | EFI_DEVICE_PATH_PROTOCOL *NewVariable;\r | |
935 | EFI_DEVICE_PATH_PROTOCOL *SavedNewVariable;\r | |
936 | EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r | |
937 | \r | |
938 | Variable = NULL;\r | |
939 | Instance = NULL;\r | |
940 | \r | |
941 | //\r | |
942 | // Get global variable and its size according to the name given.\r | |
943 | //\r | |
944 | Variable = TerminalGetVariableAndSize (\r | |
945 | VariableName,\r | |
946 | &gEfiGlobalVariableGuid,\r | |
947 | &VariableSize\r | |
948 | );\r | |
949 | if (Variable == NULL) {\r | |
950 | return ;\r | |
951 | }\r | |
952 | \r | |
953 | FoundOne = FALSE;\r | |
954 | OriginalVariable = Variable;\r | |
955 | NewVariable = NULL;\r | |
956 | \r | |
957 | //\r | |
958 | // Get first device path instance from Variable\r | |
959 | //\r | |
960 | Instance = GetNextDevicePathInstance (&Variable, &InstanceSize);\r | |
961 | if (Instance == NULL) {\r | |
962 | gBS->FreePool (OriginalVariable);\r | |
963 | return ;\r | |
964 | }\r | |
965 | //\r | |
966 | // Loop through all the device path instances of Variable\r | |
967 | //\r | |
968 | do {\r | |
969 | //\r | |
970 | // Loop through all the terminal types that this driver supports\r | |
971 | //\r | |
972 | Match = FALSE;\r | |
973 | for (TerminalType = PcAnsiType; TerminalType <= VTUTF8Type; TerminalType++) {\r | |
974 | \r | |
975 | SetTerminalDevicePath (TerminalType, ParentDevicePath, &TempDevicePath);\r | |
976 | \r | |
977 | //\r | |
978 | // Compare the genterated device path to the current device path instance\r | |
979 | //\r | |
980 | if (TempDevicePath != NULL) {\r | |
981 | if (CompareMem (Instance, TempDevicePath, InstanceSize) == 0) {\r | |
982 | Match = TRUE;\r | |
983 | FoundOne = TRUE;\r | |
984 | }\r | |
985 | \r | |
986 | gBS->FreePool (TempDevicePath);\r | |
987 | }\r | |
988 | }\r | |
989 | //\r | |
990 | // If a match was not found, then keep the current device path instance\r | |
991 | //\r | |
992 | if (!Match) {\r | |
993 | SavedNewVariable = NewVariable;\r | |
994 | NewVariable = AppendDevicePathInstance (NewVariable, Instance);\r | |
995 | if (SavedNewVariable != NULL) {\r | |
996 | gBS->FreePool (SavedNewVariable);\r | |
997 | }\r | |
998 | }\r | |
999 | //\r | |
1000 | // Get next device path instance from Variable\r | |
1001 | //\r | |
1002 | gBS->FreePool (Instance);\r | |
1003 | Instance = GetNextDevicePathInstance (&Variable, &InstanceSize);\r | |
1004 | } while (Instance != NULL);\r | |
1005 | \r | |
1006 | gBS->FreePool (OriginalVariable);\r | |
1007 | \r | |
1008 | if (FoundOne) {\r | |
1009 | VariableSize = GetDevicePathSize (NewVariable);\r | |
1010 | \r | |
1011 | Status = gRT->SetVariable (\r | |
1012 | VariableName,\r | |
1013 | &gEfiGlobalVariableGuid,\r | |
1014 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
1015 | VariableSize,\r | |
1016 | NewVariable\r | |
1017 | );\r | |
1018 | }\r | |
1019 | \r | |
1020 | if (NewVariable != NULL) {\r | |
1021 | gBS->FreePool (NewVariable);\r | |
1022 | }\r | |
1023 | \r | |
1024 | return ;\r | |
1025 | }\r | |
1026 | \r | |
1027 | VOID *\r | |
1028 | TerminalGetVariableAndSize (\r | |
1029 | IN CHAR16 *Name,\r | |
1030 | IN EFI_GUID *VendorGuid,\r | |
1031 | OUT UINTN *VariableSize\r | |
1032 | )\r | |
1033 | /*++\r | |
1034 | \r | |
1035 | Routine Description:\r | |
1036 | Read the EFI variable (VendorGuid/Name) and return a dynamically allocated\r | |
1037 | buffer, and the size of the buffer. On failure return NULL.\r | |
1038 | \r | |
1039 | Arguments:\r | |
1040 | Name - String part of EFI variable name\r | |
1041 | \r | |
1042 | VendorGuid - GUID part of EFI variable name\r | |
1043 | \r | |
1044 | VariableSize - Returns the size of the EFI variable that was read\r | |
1045 | \r | |
1046 | Returns:\r | |
1047 | Dynamically allocated memory that contains a copy of the EFI variable.\r | |
1048 | Caller is repsoncible freeing the buffer.\r | |
1049 | \r | |
1050 | NULL - Variable was not read\r | |
1051 | \r | |
1052 | --*/\r | |
1053 | {\r | |
1054 | EFI_STATUS Status;\r | |
1055 | UINTN BufferSize;\r | |
1056 | VOID *Buffer;\r | |
1057 | \r | |
1058 | Buffer = NULL;\r | |
1059 | \r | |
1060 | //\r | |
1061 | // Pass in a small size buffer to find the actual variable size.\r | |
1062 | //\r | |
1063 | BufferSize = 1;\r | |
1064 | Buffer = AllocatePool (BufferSize);\r | |
1065 | if (Buffer == NULL) {\r | |
1066 | *VariableSize = 0;\r | |
1067 | return NULL;\r | |
1068 | }\r | |
1069 | \r | |
1070 | Status = gRT->GetVariable (Name, VendorGuid, NULL, &BufferSize, Buffer);\r | |
1071 | \r | |
1072 | if (Status == EFI_SUCCESS) {\r | |
1073 | *VariableSize = BufferSize;\r | |
1074 | return Buffer;\r | |
1075 | \r | |
1076 | } else if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
1077 | //\r | |
1078 | // Allocate the buffer to return\r | |
1079 | //\r | |
1080 | gBS->FreePool (Buffer);\r | |
1081 | Buffer = AllocatePool (BufferSize);\r | |
1082 | if (Buffer == NULL) {\r | |
1083 | *VariableSize = 0;\r | |
1084 | return NULL;\r | |
1085 | }\r | |
1086 | //\r | |
1087 | // Read variable into the allocated buffer.\r | |
1088 | //\r | |
1089 | Status = gRT->GetVariable (Name, VendorGuid, NULL, &BufferSize, Buffer);\r | |
1090 | if (EFI_ERROR (Status)) {\r | |
1091 | BufferSize = 0;\r | |
1092 | gBS->FreePool (Buffer);\r | |
1093 | Buffer = NULL;\r | |
1094 | }\r | |
1095 | } else {\r | |
1096 | //\r | |
1097 | // Variable not found or other errors met.\r | |
1098 | //\r | |
1099 | BufferSize = 0;\r | |
1100 | gBS->FreePool (Buffer);\r | |
1101 | Buffer = NULL;\r | |
1102 | }\r | |
1103 | \r | |
1104 | *VariableSize = BufferSize;\r | |
1105 | return Buffer;\r | |
1106 | }\r | |
1107 | \r | |
1108 | EFI_STATUS\r | |
1109 | SetTerminalDevicePath (\r | |
1110 | IN UINT8 TerminalType,\r | |
1111 | IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,\r | |
1112 | OUT EFI_DEVICE_PATH_PROTOCOL **TerminalDevicePath\r | |
1113 | )\r | |
1114 | {\r | |
1115 | VENDOR_DEVICE_PATH Node;\r | |
1116 | \r | |
1117 | *TerminalDevicePath = NULL;\r | |
1118 | Node.Header.Type = MESSAGING_DEVICE_PATH;\r | |
1119 | Node.Header.SubType = MSG_VENDOR_DP;\r | |
1120 | \r | |
1121 | //\r | |
1122 | // generate terminal device path node according to terminal type.\r | |
1123 | //\r | |
1124 | switch (TerminalType) {\r | |
1125 | \r | |
1126 | case PcAnsiType:\r | |
1127 | CopyMem (\r | |
1128 | &Node.Guid,\r | |
1129 | &gEfiPcAnsiGuid,\r | |
1130 | sizeof (EFI_GUID)\r | |
1131 | );\r | |
1132 | break;\r | |
1133 | \r | |
1134 | case VT100Type:\r | |
1135 | CopyMem (\r | |
1136 | &Node.Guid,\r | |
1137 | &gEfiVT100Guid,\r | |
1138 | sizeof (EFI_GUID)\r | |
1139 | );\r | |
1140 | break;\r | |
1141 | \r | |
1142 | case VT100PlusType:\r | |
1143 | CopyMem (\r | |
1144 | &Node.Guid,\r | |
1145 | &gEfiVT100PlusGuid,\r | |
1146 | sizeof (EFI_GUID)\r | |
1147 | );\r | |
1148 | break;\r | |
1149 | \r | |
1150 | case VTUTF8Type:\r | |
1151 | CopyMem (\r | |
1152 | &Node.Guid,\r | |
1153 | &gEfiVTUTF8Guid,\r | |
1154 | sizeof (EFI_GUID)\r | |
1155 | );\r | |
1156 | break;\r | |
1157 | \r | |
1158 | default:\r | |
1159 | return EFI_UNSUPPORTED;\r | |
1160 | break;\r | |
1161 | }\r | |
1162 | \r | |
1163 | SetDevicePathNodeLength (\r | |
1164 | &Node.Header,\r | |
1165 | sizeof (VENDOR_DEVICE_PATH)\r | |
1166 | );\r | |
1167 | //\r | |
1168 | // append the terminal node onto parent device path\r | |
1169 | // to generate a complete terminal device path.\r | |
1170 | //\r | |
1171 | *TerminalDevicePath = AppendDevicePathNode (\r | |
1172 | ParentDevicePath,\r | |
1173 | (EFI_DEVICE_PATH_PROTOCOL *) &Node\r | |
1174 | );\r | |
1175 | if (*TerminalDevicePath == NULL) {\r | |
1176 | return EFI_OUT_OF_RESOURCES;\r | |
1177 | }\r | |
1178 | \r | |
1179 | return EFI_SUCCESS;\r | |
1180 | }\r | |
1181 | \r | |
1182 | VOID\r | |
1183 | InitializeRawFiFo (\r | |
1184 | IN TERMINAL_DEV *TerminalDevice\r | |
1185 | )\r | |
1186 | {\r | |
1187 | //\r | |
1188 | // Make the raw fifo empty.\r | |
1189 | //\r | |
1190 | TerminalDevice->RawFiFo.Head = TerminalDevice->RawFiFo.Tail;\r | |
1191 | }\r | |
1192 | \r | |
1193 | VOID\r | |
1194 | InitializeUnicodeFiFo (\r | |
1195 | IN TERMINAL_DEV *TerminalDevice\r | |
1196 | )\r | |
1197 | {\r | |
1198 | //\r | |
1199 | // Make the unicode fifo empty\r | |
1200 | //\r | |
1201 | TerminalDevice->UnicodeFiFo.Head = TerminalDevice->UnicodeFiFo.Tail;\r | |
1202 | }\r | |
1203 | \r | |
1204 | VOID\r | |
1205 | InitializeEfiKeyFiFo (\r | |
1206 | IN TERMINAL_DEV *TerminalDevice\r | |
1207 | )\r | |
1208 | {\r | |
1209 | //\r | |
1210 | // Make the efi key fifo empty\r | |
1211 | //\r | |
1212 | TerminalDevice->EfiKeyFiFo.Head = TerminalDevice->EfiKeyFiFo.Tail;\r | |
1213 | }\r |