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Take the highest horizontal resolution as highest video resolution.
[mirror_edk2.git] / IntelFrameworkModulePkg / Csm / BiosThunk / VideoDxe / BiosVideo.c
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bcecde14 1/** @file\r
2 ConsoleOut Routines that speak VGA.\r
3\r
2e0910ac 4Copyright (c) 2007 - 2013, Intel Corporation. All rights reserved.<BR>\r
bcecde14 5\r
6This program and the accompanying materials\r
7are licensed and made available under the terms and conditions\r
8of the BSD License which accompanies this distribution. The\r
9full text of the license may be found at\r
10http://opensource.org/licenses/bsd-license.php\r
11\r
12THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
13WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
14\r
15**/\r
16\r
17#include "BiosVideo.h"\r
18\r
19//\r
20// EFI Driver Binding Protocol Instance\r
21//\r
22EFI_DRIVER_BINDING_PROTOCOL gBiosVideoDriverBinding = {\r
23 BiosVideoDriverBindingSupported,\r
24 BiosVideoDriverBindingStart,\r
25 BiosVideoDriverBindingStop,\r
26 0x3,\r
27 NULL,\r
28 NULL\r
29};\r
30\r
31//\r
32// Global lookup tables for VGA graphics modes\r
33//\r
34UINT8 mVgaLeftMaskTable[] = { 0xff, 0x7f, 0x3f, 0x1f, 0x0f, 0x07, 0x03, 0x01 };\r
35\r
36UINT8 mVgaRightMaskTable[] = { 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff };\r
37\r
38UINT8 mVgaBitMaskTable[] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };\r
39\r
eca7d271 40//\r
41// Save controller attributes during first start\r
42//\r
43UINT64 mOriginalPciAttributes;\r
44BOOLEAN mPciAttributesSaved = FALSE;\r
45\r
bcecde14 46EFI_GRAPHICS_OUTPUT_BLT_PIXEL mVgaColorToGraphicsOutputColor[] = {\r
47 { 0x00, 0x00, 0x00, 0x00 },\r
48 { 0x98, 0x00, 0x00, 0x00 },\r
49 { 0x00, 0x98, 0x00, 0x00 },\r
50 { 0x98, 0x98, 0x00, 0x00 },\r
51 { 0x00, 0x00, 0x98, 0x00 },\r
52 { 0x98, 0x00, 0x98, 0x00 },\r
53 { 0x00, 0x98, 0x98, 0x00 },\r
54 { 0x98, 0x98, 0x98, 0x00 },\r
55 { 0x10, 0x10, 0x10, 0x00 },\r
56 { 0xff, 0x10, 0x10, 0x00 },\r
57 { 0x10, 0xff, 0x10, 0x00 },\r
58 { 0xff, 0xff, 0x10, 0x00 },\r
59 { 0x10, 0x10, 0xff, 0x00 },\r
60 { 0xf0, 0x10, 0xff, 0x00 },\r
61 { 0x10, 0xff, 0xff, 0x00 },\r
62 { 0xff, 0xff, 0xff, 0x00 }\r
63};\r
64\r
65//\r
66// Standard timing defined by VESA EDID\r
67//\r
68VESA_BIOS_EXTENSIONS_EDID_TIMING mEstablishedEdidTiming[] = {\r
69 //\r
70 // Established Timing I\r
71 //\r
72 {800, 600, 60},\r
73 {800, 600, 56},\r
74 {640, 480, 75},\r
75 {640, 480, 72},\r
76 {640, 480, 67},\r
77 {640, 480, 60},\r
78 {720, 400, 88},\r
79 {720, 400, 70},\r
80 //\r
81 // Established Timing II\r
82 //\r
83 {1280, 1024, 75},\r
84 {1024, 768, 75},\r
85 {1024, 768, 70},\r
86 {1024, 768, 60},\r
87 {1024, 768, 87},\r
88 {832, 624, 75},\r
89 {800, 600, 75},\r
90 {800, 600, 72},\r
91 //\r
92 // Established Timing III\r
93 //\r
94 {1152, 870, 75}\r
95};\r
96\r
97/**\r
98 Supported.\r
99\r
100 @param This Pointer to driver binding protocol\r
101 @param Controller Controller handle to connect\r
102 @param RemainingDevicePath A pointer to the remaining portion of a device\r
103 path\r
104\r
105 @retval EFI_STATUS EFI_SUCCESS:This controller can be managed by this\r
106 driver, Otherwise, this controller cannot be\r
107 managed by this driver\r
108\r
109**/\r
110EFI_STATUS\r
111EFIAPI\r
112BiosVideoDriverBindingSupported (\r
113 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
114 IN EFI_HANDLE Controller,\r
115 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
116 )\r
117{\r
118 EFI_STATUS Status;\r
119 EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;\r
120 EFI_PCI_IO_PROTOCOL *PciIo;\r
121 PCI_TYPE00 Pci;\r
122 EFI_DEV_PATH *Node;\r
123\r
124 //\r
125 // See if the Legacy BIOS Protocol is available\r
126 //\r
127 Status = gBS->LocateProtocol (&gEfiLegacyBiosProtocolGuid, NULL, (VOID **) &LegacyBios);\r
128 if (EFI_ERROR (Status)) {\r
129 return Status;\r
130 }\r
131\r
132 //\r
133 // Open the IO Abstraction(s) needed to perform the supported test\r
134 //\r
135 Status = gBS->OpenProtocol (\r
136 Controller,\r
137 &gEfiPciIoProtocolGuid,\r
138 (VOID **) &PciIo,\r
139 This->DriverBindingHandle,\r
140 Controller,\r
141 EFI_OPEN_PROTOCOL_BY_DRIVER\r
142 );\r
143 if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {\r
144 return Status;\r
145 }\r
146\r
147 if (Status == EFI_ALREADY_STARTED) {\r
148 //\r
149 // If VgaMiniPort protocol is installed, EFI_ALREADY_STARTED indicates failure,\r
150 // because VgaMiniPort protocol is installed on controller handle directly.\r
151 //\r
152 Status = gBS->OpenProtocol (\r
153 Controller,\r
154 &gEfiVgaMiniPortProtocolGuid,\r
155 NULL,\r
156 NULL,\r
157 NULL,\r
158 EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r
159 );\r
160 if (!EFI_ERROR (Status)) {\r
161 return EFI_ALREADY_STARTED;\r
162 }\r
163 }\r
164 //\r
165 // See if this is a PCI Graphics Controller by looking at the Command register and\r
166 // Class Code Register\r
167 //\r
168 Status = PciIo->Pci.Read (\r
169 PciIo,\r
170 EfiPciIoWidthUint32,\r
171 0,\r
172 sizeof (Pci) / sizeof (UINT32),\r
173 &Pci\r
174 );\r
175 if (EFI_ERROR (Status)) {\r
176 Status = EFI_UNSUPPORTED;\r
177 goto Done;\r
178 }\r
179\r
180 Status = EFI_UNSUPPORTED;\r
181 if (Pci.Hdr.ClassCode[2] == 0x03 || (Pci.Hdr.ClassCode[2] == 0x00 && Pci.Hdr.ClassCode[1] == 0x01)) {\r
182\r
183 Status = EFI_SUCCESS;\r
184 //\r
185 // If this is a graphics controller,\r
186 // go further check RemainingDevicePath validation\r
187 //\r
188 if (RemainingDevicePath != NULL) {\r
189 Node = (EFI_DEV_PATH *) RemainingDevicePath;\r
190 //\r
191 // Check if RemainingDevicePath is the End of Device Path Node, \r
192 // if yes, return EFI_SUCCESS\r
193 //\r
194 if (!IsDevicePathEnd (Node)) {\r
195 //\r
196 // If RemainingDevicePath isn't the End of Device Path Node,\r
197 // check its validation\r
198 //\r
199 if (Node->DevPath.Type != ACPI_DEVICE_PATH ||\r
200 Node->DevPath.SubType != ACPI_ADR_DP ||\r
c31b316c 201 DevicePathNodeLength(&Node->DevPath) < sizeof(ACPI_ADR_DEVICE_PATH)) {\r
bcecde14 202 Status = EFI_UNSUPPORTED;\r
203 }\r
204 }\r
205 }\r
206 }\r
207\r
208Done:\r
209 gBS->CloseProtocol (\r
210 Controller,\r
211 &gEfiPciIoProtocolGuid,\r
212 This->DriverBindingHandle,\r
213 Controller\r
214 );\r
215\r
216 return Status;\r
217}\r
218\r
219\r
220/**\r
221 Install Graphics Output Protocol onto VGA device handles.\r
222\r
223 @param This Pointer to driver binding protocol\r
224 @param Controller Controller handle to connect\r
225 @param RemainingDevicePath A pointer to the remaining portion of a device\r
226 path\r
227\r
228 @return EFI_STATUS\r
229\r
230**/\r
231EFI_STATUS\r
232EFIAPI\r
233BiosVideoDriverBindingStart (\r
234 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
235 IN EFI_HANDLE Controller,\r
236 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
237 )\r
238{\r
239 EFI_STATUS Status;\r
240 EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r
241 EFI_PCI_IO_PROTOCOL *PciIo;\r
242 EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;\r
243 UINTN Flags;\r
bcecde14 244 UINT64 Supports;\r
bcecde14 245\r
246 //\r
247 // Initialize local variables\r
248 //\r
249 PciIo = NULL;\r
250 ParentDevicePath = NULL;\r
251\r
252 //\r
253 //\r
254 // See if the Legacy BIOS Protocol is available\r
255 //\r
256 Status = gBS->LocateProtocol (&gEfiLegacyBiosProtocolGuid, NULL, (VOID **) &LegacyBios);\r
257 if (EFI_ERROR (Status)) {\r
258 return Status;\r
259 }\r
260\r
153a2bae
RN		 261 //\r
262 // Prepare for status code\r
263 //\r
264 Status = gBS->HandleProtocol (\r
265 Controller,\r
266 &gEfiDevicePathProtocolGuid,\r
267 (VOID **) &ParentDevicePath\r
268 );\r
269 if (EFI_ERROR (Status)) {\r
270 return Status;\r
271 }\r
272\r
bcecde14 273 //\r
274 // Open the IO Abstraction(s) needed\r
275 //\r
276 Status = gBS->OpenProtocol (\r
277 Controller,\r
278 &gEfiPciIoProtocolGuid,\r
279 (VOID **) &PciIo,\r
280 This->DriverBindingHandle,\r
281 Controller,\r
282 EFI_OPEN_PROTOCOL_BY_DRIVER\r
283 );\r
284 if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {\r
285 return Status;\r
286 }\r
287\r
bcecde14 288 //\r
289 // Save original PCI attributes\r
290 //\r
eca7d271 291 if (!mPciAttributesSaved) {\r
292 Status = PciIo->Attributes (\r
293 PciIo,\r
294 EfiPciIoAttributeOperationGet,\r
295 0,\r
296 &mOriginalPciAttributes\r
297 );\r
298 \r
299 if (EFI_ERROR (Status)) {\r
300 goto Done;\r
301 }\r
302 mPciAttributesSaved = TRUE;\r
bcecde14 303 }\r
bcecde14 304\r
305 //\r
306 // Get supported PCI attributes\r
307 //\r
308 Status = PciIo->Attributes (\r
309 PciIo,\r
310 EfiPciIoAttributeOperationSupported,\r
311 0,\r
312 &Supports\r
313 );\r
314 if (EFI_ERROR (Status)) {\r
315 goto Done;\r
316 }\r
317\r
318 Supports &= (EFI_PCI_IO_ATTRIBUTE_VGA_IO | EFI_PCI_IO_ATTRIBUTE_VGA_IO_16);\r
319 if (Supports == 0 || Supports == (EFI_PCI_IO_ATTRIBUTE_VGA_IO | EFI_PCI_IO_ATTRIBUTE_VGA_IO_16)) {\r
320 Status = EFI_UNSUPPORTED;\r
321 goto Done;\r
322 } \r
323\r
bcecde14 324 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
325 EFI_PROGRESS_CODE,\r
326 EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_PC_ENABLE,\r
327 ParentDevicePath\r
328 );\r
329 //\r
330 // Enable the device and make sure VGA cycles are being forwarded to this VGA device\r
331 //\r
332 Status = PciIo->Attributes (\r
333 PciIo,\r
334 EfiPciIoAttributeOperationEnable,\r
335 EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | Supports,\r
336 NULL\r
337 );\r
338 if (EFI_ERROR (Status)) {\r
339 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
340 EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
341 EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_EC_RESOURCE_CONFLICT,\r
342 ParentDevicePath\r
343 );\r
344 goto Done;\r
345 }\r
346 //\r
347 // Check to see if there is a legacy option ROM image associated with this PCI device\r
348 //\r
349 Status = LegacyBios->CheckPciRom (\r
350 LegacyBios,\r
351 Controller,\r
352 NULL,\r
353 NULL,\r
354 &Flags\r
355 );\r
356 if (EFI_ERROR (Status)) {\r
357 goto Done;\r
358 }\r
359 //\r
360 // Post the legacy option ROM if it is available.\r
361 //\r
362 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
363 EFI_PROGRESS_CODE,\r
364 EFI_P_PC_RESET,\r
365 ParentDevicePath\r
366 );\r
367 Status = LegacyBios->InstallPciRom (\r
368 LegacyBios,\r
369 Controller,\r
370 NULL,\r
371 &Flags,\r
372 NULL,\r
373 NULL,\r
374 NULL,\r
375 NULL\r
376 );\r
377 if (EFI_ERROR (Status)) {\r
378 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
379 EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
380 EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_EC_CONTROLLER_ERROR,\r
381 ParentDevicePath\r
382 );\r
383 goto Done;\r
384 }\r
385\r
386 if (RemainingDevicePath != NULL) {\r
387 if (IsDevicePathEnd (RemainingDevicePath) && \r
388 (FeaturePcdGet (PcdBiosVideoCheckVbeEnable) || FeaturePcdGet (PcdBiosVideoCheckVgaEnable))) {\r
389 //\r
390 // If RemainingDevicePath is the End of Device Path Node,\r
391 // don't create any child device and return EFI_SUCESS\r
392 Status = EFI_SUCCESS;\r
393 goto Done;\r
394 }\r
395 }\r
396\r
397 //\r
398 // Create child handle and install GraphicsOutputProtocol on it\r
399 //\r
400 Status = BiosVideoChildHandleInstall (\r
401 This,\r
402 Controller,\r
403 PciIo,\r
404 LegacyBios,\r
405 ParentDevicePath,\r
eca7d271 406 RemainingDevicePath\r
bcecde14 407 );\r
408\r
409Done:\r
410 if ((EFI_ERROR (Status)) && (Status != EFI_ALREADY_STARTED)) {\r
411 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
412 EFI_PROGRESS_CODE,\r
413 EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_PC_DISABLE,\r
414 ParentDevicePath\r
415 );\r
416\r
417 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
418 EFI_PROGRESS_CODE,\r
419 EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_EC_NOT_DETECTED,\r
420 ParentDevicePath\r
421 );\r
eca7d271 422 if (!HasChildHandle (Controller)) {\r
423 if (mPciAttributesSaved) {\r
424 //\r
425 // Restore original PCI attributes\r
426 //\r
427 PciIo->Attributes (\r
428 PciIo,\r
429 EfiPciIoAttributeOperationSet,\r
430 mOriginalPciAttributes,\r
431 NULL\r
432 );\r
433 }\r
bcecde14 434 }\r
435 //\r
436 // Release PCI I/O Protocols on the controller handle.\r
437 //\r
438 gBS->CloseProtocol (\r
439 Controller,\r
440 &gEfiPciIoProtocolGuid,\r
441 This->DriverBindingHandle,\r
442 Controller\r
443 );\r
444 }\r
445\r
446 return Status;\r
447}\r
448\r
449\r
450/**\r
451 Stop.\r
452\r
453 @param This Pointer to driver binding protocol\r
454 @param Controller Controller handle to connect\r
455 @param NumberOfChildren Number of children handle created by this driver\r
456 @param ChildHandleBuffer Buffer containing child handle created\r
457\r
458 @retval EFI_SUCCESS Driver disconnected successfully from controller\r
459 @retval EFI_UNSUPPORTED Cannot find BIOS_VIDEO_DEV structure\r
460\r
461**/\r
462EFI_STATUS\r
463EFIAPI\r
464BiosVideoDriverBindingStop (\r
465 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
466 IN EFI_HANDLE Controller,\r
467 IN UINTN NumberOfChildren,\r
468 IN EFI_HANDLE *ChildHandleBuffer\r
469 )\r
470{\r
471 EFI_STATUS Status;\r
472 BOOLEAN AllChildrenStopped;\r
473 UINTN Index;\r
eca7d271 474 EFI_PCI_IO_PROTOCOL *PciIo;\r
bcecde14 475\r
476 AllChildrenStopped = TRUE;\r
477\r
478 if (NumberOfChildren == 0) {\r
479 //\r
480 // Close PCI I/O protocol on the controller handle\r
481 //\r
482 gBS->CloseProtocol (\r
483 Controller,\r
484 &gEfiPciIoProtocolGuid,\r
485 This->DriverBindingHandle,\r
486 Controller\r
487 );\r
488\r
489 return EFI_SUCCESS;\r
490 }\r
491\r
492 for (Index = 0; Index < NumberOfChildren; Index++) {\r
493 Status = BiosVideoChildHandleUninstall (This, Controller, ChildHandleBuffer[Index]);\r
494\r
495 if (EFI_ERROR (Status)) {\r
496 AllChildrenStopped = FALSE;\r
497 }\r
498 }\r
499\r
500 if (!AllChildrenStopped) {\r
501 return EFI_DEVICE_ERROR;\r
502 }\r
503\r
eca7d271 504 if (!HasChildHandle (Controller)) {\r
505 if (mPciAttributesSaved) {\r
506 Status = gBS->HandleProtocol (\r
507 Controller,\r
508 &gEfiPciIoProtocolGuid,\r
509 (VOID **) &PciIo\r
510 );\r
511 ASSERT_EFI_ERROR (Status);\r
512 \r
513 //\r
514 // Restore original PCI attributes\r
515 //\r
516 Status = PciIo->Attributes (\r
517 PciIo,\r
518 EfiPciIoAttributeOperationSet,\r
519 mOriginalPciAttributes,\r
520 NULL\r
521 );\r
522 ASSERT_EFI_ERROR (Status);\r
523 }\r
524 }\r
525\r
526\r
bcecde14 527 return EFI_SUCCESS;\r
528}\r
529\r
530\r
531/**\r
532 Install child handles if the Handle supports MBR format.\r
533\r
534 @param This Calling context.\r
535 @param ParentHandle Parent Handle\r
536 @param ParentPciIo Parent PciIo interface\r
537 @param ParentLegacyBios Parent LegacyBios interface\r
538 @param ParentDevicePath Parent Device Path\r
539 @param RemainingDevicePath Remaining Device Path\r
bcecde14 540\r
541 @retval EFI_SUCCESS If a child handle was added\r
542 @retval other A child handle was not added\r
543\r
544**/\r
545EFI_STATUS\r
546BiosVideoChildHandleInstall (\r
547 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
548 IN EFI_HANDLE ParentHandle,\r
549 IN EFI_PCI_IO_PROTOCOL *ParentPciIo,\r
550 IN EFI_LEGACY_BIOS_PROTOCOL *ParentLegacyBios,\r
551 IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,\r
eca7d271 552 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
bcecde14 553 )\r
554{\r
555 EFI_STATUS Status;\r
556 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
557 PCI_TYPE00 Pci;\r
558 ACPI_ADR_DEVICE_PATH AcpiDeviceNode;\r
559 BOOLEAN ProtocolInstalled;\r
560\r
561 //\r
562 // Allocate the private device structure for video device\r
563 //\r
564 BiosVideoPrivate = (BIOS_VIDEO_DEV *) AllocateZeroPool (\r
565 sizeof (BIOS_VIDEO_DEV)\r
566 );\r
567 if (NULL == BiosVideoPrivate) {\r
568 Status = EFI_OUT_OF_RESOURCES;\r
569 goto Done;\r
570 }\r
571\r
572 //\r
573 // See if this is a VGA compatible controller or not\r
574 //\r
575 Status = ParentPciIo->Pci.Read (\r
576 ParentPciIo,\r
577 EfiPciIoWidthUint32,\r
578 0,\r
579 sizeof (Pci) / sizeof (UINT32),\r
580 &Pci\r
581 );\r
582 if (EFI_ERROR (Status)) {\r
583 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
584 EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
585 EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_EC_CONTROLLER_ERROR,\r
586 ParentDevicePath\r
587 );\r
588 goto Done;\r
589 }\r
590 BiosVideoPrivate->VgaCompatible = FALSE;\r
591 if (Pci.Hdr.ClassCode[2] == 0x00 && Pci.Hdr.ClassCode[1] == 0x01) {\r
592 BiosVideoPrivate->VgaCompatible = TRUE;\r
593 }\r
594\r
595 if (Pci.Hdr.ClassCode[2] == 0x03 && Pci.Hdr.ClassCode[1] == 0x00 && Pci.Hdr.ClassCode[0] == 0x00) {\r
596 BiosVideoPrivate->VgaCompatible = TRUE;\r
597 }\r
598\r
599 if (PcdGetBool (PcdBiosVideoSetTextVgaModeEnable)) {\r
600 //\r
601 // Create EXIT_BOOT_SERIVES Event\r
602 //\r
603 Status = gBS->CreateEventEx (\r
604 EVT_NOTIFY_SIGNAL,\r
605 TPL_NOTIFY,\r
606 BiosVideoNotifyExitBootServices,\r
607 BiosVideoPrivate,\r
608 &gEfiEventExitBootServicesGuid,\r
609 &BiosVideoPrivate->ExitBootServicesEvent\r
610 );\r
611 if (EFI_ERROR (Status)) {\r
612 goto Done;\r
613 }\r
614 }\r
615\r
616 //\r
617 // Initialize the child private structure\r
618 //\r
619 BiosVideoPrivate->Signature = BIOS_VIDEO_DEV_SIGNATURE;\r
620\r
621 //\r
622 // Fill in Graphics Output specific mode structures\r
623 //\r
624 BiosVideoPrivate->HardwareNeedsStarting = TRUE;\r
625 BiosVideoPrivate->ModeData = NULL;\r
626 BiosVideoPrivate->LineBuffer = NULL;\r
627 BiosVideoPrivate->VgaFrameBuffer = NULL;\r
628 BiosVideoPrivate->VbeFrameBuffer = NULL;\r
629\r
630 //\r
631 // Fill in the Graphics Output Protocol\r
632 //\r
633 BiosVideoPrivate->GraphicsOutput.QueryMode = BiosVideoGraphicsOutputQueryMode;\r
634 BiosVideoPrivate->GraphicsOutput.SetMode = BiosVideoGraphicsOutputSetMode;\r
635\r
636\r
637 //\r
638 // Allocate buffer for Graphics Output Protocol mode information\r
639 //\r
640 BiosVideoPrivate->GraphicsOutput.Mode = (EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *) AllocatePool (\r
641 sizeof (EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE)\r
642 );\r
643 if (NULL == BiosVideoPrivate->GraphicsOutput.Mode) {\r
644 Status = EFI_OUT_OF_RESOURCES;\r
645 goto Done;\r
646 }\r
647\r
648 BiosVideoPrivate->GraphicsOutput.Mode->Info = (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *) AllocatePool (\r
649 sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION)\r
650 );\r
651 if (NULL == BiosVideoPrivate->GraphicsOutput.Mode->Info) {\r
652 Status = EFI_OUT_OF_RESOURCES;\r
653 goto Done;\r
654 }\r
655\r
656 //\r
657 // Assume that Graphics Output Protocol will be produced until proven otherwise\r
658 //\r
659 BiosVideoPrivate->ProduceGraphicsOutput = TRUE;\r
660\r
661 //\r
662 // Set Gop Device Path, here RemainingDevicePath will not be one End of Device Path Node.\r
663 //\r
664 if ((RemainingDevicePath == NULL) || (!IsDevicePathEnd (RemainingDevicePath))) {\r
665 if (RemainingDevicePath == NULL) {\r
666 ZeroMem (&AcpiDeviceNode, sizeof (ACPI_ADR_DEVICE_PATH));\r
667 AcpiDeviceNode.Header.Type = ACPI_DEVICE_PATH;\r
668 AcpiDeviceNode.Header.SubType = ACPI_ADR_DP;\r
669 AcpiDeviceNode.ADR = ACPI_DISPLAY_ADR (1, 0, 0, 1, 0, ACPI_ADR_DISPLAY_TYPE_VGA, 0, 0);\r
670 SetDevicePathNodeLength (&AcpiDeviceNode.Header, sizeof (ACPI_ADR_DEVICE_PATH));\r
671 \r
672 BiosVideoPrivate->GopDevicePath = AppendDevicePathNode (\r
673 ParentDevicePath,\r
674 (EFI_DEVICE_PATH_PROTOCOL *) &AcpiDeviceNode\r
675 );\r
676 } else {\r
677 BiosVideoPrivate->GopDevicePath = AppendDevicePathNode (ParentDevicePath, RemainingDevicePath);\r
678 }\r
679 \r
680 //\r
681 // Creat child handle and device path protocol firstly\r
682 //\r
683 BiosVideoPrivate->Handle = NULL;\r
684 Status = gBS->InstallMultipleProtocolInterfaces (\r
685 &BiosVideoPrivate->Handle,\r
686 &gEfiDevicePathProtocolGuid,\r
687 BiosVideoPrivate->GopDevicePath,\r
688 NULL\r
689 );\r
690 if (EFI_ERROR (Status)) {\r
691 goto Done;\r
692 }\r
693 }\r
694\r
695 //\r
696 // Fill in the VGA Mini Port Protocol fields\r
697 //\r
698 BiosVideoPrivate->VgaMiniPort.SetMode = BiosVideoVgaMiniPortSetMode;\r
699 BiosVideoPrivate->VgaMiniPort.VgaMemoryOffset = 0xb8000;\r
700 BiosVideoPrivate->VgaMiniPort.CrtcAddressRegisterOffset = 0x3d4;\r
701 BiosVideoPrivate->VgaMiniPort.CrtcDataRegisterOffset = 0x3d5;\r
702 BiosVideoPrivate->VgaMiniPort.VgaMemoryBar = EFI_PCI_IO_PASS_THROUGH_BAR;\r
703 BiosVideoPrivate->VgaMiniPort.CrtcAddressRegisterBar = EFI_PCI_IO_PASS_THROUGH_BAR;\r
704 BiosVideoPrivate->VgaMiniPort.CrtcDataRegisterBar = EFI_PCI_IO_PASS_THROUGH_BAR;\r
705\r
706 //\r
707 // Child handle need to consume the Legacy Bios protocol\r
708 //\r
709 BiosVideoPrivate->LegacyBios = ParentLegacyBios;\r
710\r
711 //\r
712 // When check for VBE, PCI I/O protocol is needed, so use parent's protocol interface temporally\r
713 //\r
714 BiosVideoPrivate->PciIo = ParentPciIo;\r
bcecde14 715\r
716 //\r
717 // Check for VESA BIOS Extensions for modes that are compatible with Graphics Output\r
718 //\r
719 if (FeaturePcdGet (PcdBiosVideoCheckVbeEnable)) {\r
720 Status = BiosVideoCheckForVbe (BiosVideoPrivate);\r
721 DEBUG ((EFI_D_INFO, "BiosVideoCheckForVbe - %r\n", Status));\r
722 } else {\r
723 Status = EFI_UNSUPPORTED;\r
724 }\r
725 if (EFI_ERROR (Status)) {\r
726 //\r
727 // The VESA BIOS Extensions are not compatible with Graphics Output, so check for support\r
728 // for the standard 640x480 16 color VGA mode\r
729 //\r
730 DEBUG ((EFI_D_INFO, "VgaCompatible - %x\n", BiosVideoPrivate->VgaCompatible));\r
731 if (BiosVideoPrivate->VgaCompatible) {\r
732 if (FeaturePcdGet (PcdBiosVideoCheckVgaEnable)) {\r
733 Status = BiosVideoCheckForVga (BiosVideoPrivate);\r
734 DEBUG ((EFI_D_INFO, "BiosVideoCheckForVga - %r\n", Status));\r
735 } else {\r
736 Status = EFI_UNSUPPORTED;\r
737 }\r
738 }\r
739\r
740 if (EFI_ERROR (Status)) {\r
af00cab8 741 //\r
742 // Free GOP mode structure if it is not freed before\r
743 // VgaMiniPort does not need this structure any more\r
744 //\r
745 if (BiosVideoPrivate->GraphicsOutput.Mode != NULL) {\r
746 if (BiosVideoPrivate->GraphicsOutput.Mode->Info != NULL) {\r
747 FreePool (BiosVideoPrivate->GraphicsOutput.Mode->Info);\r
748 BiosVideoPrivate->GraphicsOutput.Mode->Info = NULL;\r
749 }\r
750 FreePool (BiosVideoPrivate->GraphicsOutput.Mode);\r
751 BiosVideoPrivate->GraphicsOutput.Mode = NULL;\r
752 }\r
753\r
bcecde14 754 //\r
755 // Neither VBE nor the standard 640x480 16 color VGA mode are supported, so do\r
756 // not produce the Graphics Output protocol. Instead, produce the VGA MiniPort Protocol.\r
757 //\r
758 BiosVideoPrivate->ProduceGraphicsOutput = FALSE;\r
759\r
760 //\r
761 // INT services are available, so on the 80x25 and 80x50 text mode are supported\r
762 //\r
763 BiosVideoPrivate->VgaMiniPort.MaxMode = 2;\r
764 }\r
765 }\r
766\r
767 ProtocolInstalled = FALSE;\r
768\r
769 if (BiosVideoPrivate->ProduceGraphicsOutput) {\r
770 //\r
771 // Creat child handle and install Graphics Output Protocol,EDID Discovered/Active Protocol\r
772 //\r
773 Status = gBS->InstallMultipleProtocolInterfaces (\r
774 &BiosVideoPrivate->Handle,\r
775 &gEfiGraphicsOutputProtocolGuid,\r
776 &BiosVideoPrivate->GraphicsOutput,\r
777 &gEfiEdidDiscoveredProtocolGuid,\r
778 &BiosVideoPrivate->EdidDiscovered,\r
779 &gEfiEdidActiveProtocolGuid,\r
780 &BiosVideoPrivate->EdidActive,\r
781 NULL\r
782 );\r
783\r
784 if (!EFI_ERROR (Status)) {\r
785 //\r
786 // Open the Parent Handle for the child\r
787 //\r
788 Status = gBS->OpenProtocol (\r
789 ParentHandle,\r
790 &gEfiPciIoProtocolGuid,\r
791 (VOID **) &BiosVideoPrivate->PciIo,\r
792 This->DriverBindingHandle,\r
793 BiosVideoPrivate->Handle,\r
794 EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r
795 );\r
796 if (EFI_ERROR (Status)) {\r
797 goto Done;\r
798 }\r
799 ProtocolInstalled = TRUE;\r
800 }\r
801 }\r
802\r
803 if (!ProtocolInstalled) {\r
804 //\r
805 // Install VGA Mini Port Protocol\r
806 //\r
807 Status = gBS->InstallMultipleProtocolInterfaces (\r
808 &ParentHandle,\r
809 &gEfiVgaMiniPortProtocolGuid,\r
810 &BiosVideoPrivate->VgaMiniPort,\r
811 NULL\r
812 );\r
813 }\r
814\r
815Done:\r
816 if (EFI_ERROR (Status)) {\r
817 if ((BiosVideoPrivate != NULL) && (BiosVideoPrivate->ExitBootServicesEvent != NULL)) {\r
818 gBS->CloseEvent (BiosVideoPrivate->ExitBootServicesEvent);\r
819 } \r
820 //\r
821 // Free private data structure\r
822 //\r
823 BiosVideoDeviceReleaseResource (BiosVideoPrivate);\r
824 }\r
825\r
826 return Status;\r
827}\r
828\r
829\r
830/**\r
831 Deregister an video child handle and free resources.\r
832\r
833 @param This Protocol instance pointer.\r
834 @param Controller Video controller handle\r
835 @param Handle Video child handle\r
836\r
837 @return EFI_STATUS\r
838\r
839**/\r
840EFI_STATUS\r
841BiosVideoChildHandleUninstall (\r
842 EFI_DRIVER_BINDING_PROTOCOL *This,\r
843 EFI_HANDLE Controller,\r
844 EFI_HANDLE Handle\r
845 )\r
846{\r
847 EFI_STATUS Status;\r
848 EFI_IA32_REGISTER_SET Regs;\r
849 EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;\r
850 EFI_VGA_MINI_PORT_PROTOCOL *VgaMiniPort;\r
851 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
852 EFI_PCI_IO_PROTOCOL *PciIo;\r
853\r
854 BiosVideoPrivate = NULL;\r
855 GraphicsOutput = NULL;\r
856 PciIo = NULL;\r
857 Status = EFI_UNSUPPORTED;\r
858\r
859 Status = gBS->OpenProtocol (\r
860 Handle,\r
861 &gEfiGraphicsOutputProtocolGuid,\r
862 (VOID **) &GraphicsOutput,\r
863 This->DriverBindingHandle,\r
864 Handle,\r
865 EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
866 );\r
867 if (!EFI_ERROR (Status)) {\r
868 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS (GraphicsOutput);\r
869 }\r
870\r
871 if (EFI_ERROR (Status)) {\r
872 Status = gBS->OpenProtocol (\r
873 Handle,\r
874 &gEfiVgaMiniPortProtocolGuid,\r
875 (VOID **) &VgaMiniPort,\r
876 This->DriverBindingHandle,\r
877 Handle,\r
878 EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
879 );\r
880 if (!EFI_ERROR (Status)) {\r
881 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_VGA_MINI_PORT_THIS (VgaMiniPort);\r
882 }\r
883 }\r
884\r
885 if (BiosVideoPrivate == NULL) {\r
886 return EFI_UNSUPPORTED;\r
887 }\r
888\r
889 //\r
890 // Set the 80x25 Text VGA Mode\r
891 //\r
892 Regs.H.AH = 0x00;\r
893 Regs.H.AL = 0x03;\r
894 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
895\r
896 Regs.H.AH = 0x11;\r
897 Regs.H.AL = 0x14;\r
898 Regs.H.BL = 0;\r
899 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
900\r
bcecde14 901 //\r
902 // Close PCI I/O protocol that opened by child handle\r
903 //\r
904 Status = gBS->CloseProtocol (\r
905 Controller,\r
906 &gEfiPciIoProtocolGuid,\r
907 This->DriverBindingHandle,\r
908 Handle\r
909 );\r
910\r
911 //\r
912 // Uninstall protocols on child handle\r
913 //\r
914 if (BiosVideoPrivate->ProduceGraphicsOutput) {\r
915 Status = gBS->UninstallMultipleProtocolInterfaces (\r
916 BiosVideoPrivate->Handle,\r
917 &gEfiDevicePathProtocolGuid,\r
918 BiosVideoPrivate->GopDevicePath,\r
919 &gEfiGraphicsOutputProtocolGuid,\r
920 &BiosVideoPrivate->GraphicsOutput,\r
921 &gEfiEdidDiscoveredProtocolGuid,\r
922 &BiosVideoPrivate->EdidDiscovered,\r
923 &gEfiEdidActiveProtocolGuid,\r
924 &BiosVideoPrivate->EdidActive,\r
925 NULL\r
926 );\r
927 }\r
928 if (!BiosVideoPrivate->ProduceGraphicsOutput) {\r
929 Status = gBS->UninstallMultipleProtocolInterfaces (\r
930 Controller,\r
931 &gEfiVgaMiniPortProtocolGuid,\r
932 &BiosVideoPrivate->VgaMiniPort,\r
933 NULL\r
934 );\r
935 }\r
936\r
937 if (EFI_ERROR (Status)) {\r
938 gBS->OpenProtocol (\r
939 Controller,\r
940 &gEfiPciIoProtocolGuid,\r
941 (VOID **) &PciIo,\r
942 This->DriverBindingHandle,\r
943 Handle,\r
944 EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r
945 );\r
946 return Status;\r
947 }\r
948\r
949 if (PcdGetBool (PcdBiosVideoSetTextVgaModeEnable)) {\r
950 //\r
951 // Close EXIT_BOOT_SERIVES Event\r
952 //\r
953 gBS->CloseEvent (BiosVideoPrivate->ExitBootServicesEvent);\r
954 }\r
955\r
956 //\r
957 // Release all allocated resources\r
958 //\r
959 BiosVideoDeviceReleaseResource (BiosVideoPrivate);\r
960\r
961 return EFI_SUCCESS;\r
962}\r
963\r
964\r
965/**\r
966 Release resource for biso video instance.\r
967\r
968 @param BiosVideoPrivate Video child device private data structure\r
969\r
970**/\r
971VOID\r
972BiosVideoDeviceReleaseResource (\r
973 BIOS_VIDEO_DEV *BiosVideoPrivate\r
974 )\r
975{\r
976 if (BiosVideoPrivate == NULL) {\r
977 return ;\r
978 }\r
979\r
980 //\r
981 // Release all the resourses occupied by the BIOS_VIDEO_DEV\r
982 //\r
983\r
984 //\r
985 // Free VGA Frame Buffer\r
986 //\r
987 if (BiosVideoPrivate->VgaFrameBuffer != NULL) {\r
988 FreePool (BiosVideoPrivate->VgaFrameBuffer);\r
989 }\r
990 //\r
991 // Free VBE Frame Buffer\r
992 //\r
993 if (BiosVideoPrivate->VbeFrameBuffer != NULL) {\r
994 FreePool (BiosVideoPrivate->VbeFrameBuffer);\r
995 }\r
996 //\r
997 // Free line buffer\r
998 //\r
999 if (BiosVideoPrivate->LineBuffer != NULL) {\r
1000 FreePool (BiosVideoPrivate->LineBuffer);\r
1001 }\r
1002 //\r
1003 // Free mode data\r
1004 //\r
1005 if (BiosVideoPrivate->ModeData != NULL) {\r
1006 FreePool (BiosVideoPrivate->ModeData);\r
1007 }\r
1008 //\r
1009 // Free memory allocated below 1MB\r
1010 //\r
1011 if (BiosVideoPrivate->PagesBelow1MB != 0) {\r
1012 gBS->FreePages (BiosVideoPrivate->PagesBelow1MB, BiosVideoPrivate->NumberOfPagesBelow1MB);\r
1013 }\r
1014\r
1015 if (BiosVideoPrivate->VbeSaveRestorePages != 0) {\r
1016 gBS->FreePages (BiosVideoPrivate->VbeSaveRestoreBuffer, BiosVideoPrivate->VbeSaveRestorePages);\r
1017 }\r
1018\r
1019 //\r
1020 // Free graphics output protocol occupied resource\r
1021 //\r
1022 if (BiosVideoPrivate->GraphicsOutput.Mode != NULL) {\r
1023 if (BiosVideoPrivate->GraphicsOutput.Mode->Info != NULL) {\r
1024 FreePool (BiosVideoPrivate->GraphicsOutput.Mode->Info);\r
af00cab8 1025 BiosVideoPrivate->GraphicsOutput.Mode->Info = NULL;\r
bcecde14 1026 }\r
1027 FreePool (BiosVideoPrivate->GraphicsOutput.Mode);\r
af00cab8 1028 BiosVideoPrivate->GraphicsOutput.Mode = NULL;\r
bcecde14 1029 }\r
1030 //\r
1031 // Free EDID discovered protocol occupied resource\r
1032 //\r
1033 if (BiosVideoPrivate->EdidDiscovered.Edid != NULL) {\r
1034 FreePool (BiosVideoPrivate->EdidDiscovered.Edid);\r
1035 }\r
1036 //\r
1037 // Free EDID active protocol occupied resource\r
1038 //\r
1039 if (BiosVideoPrivate->EdidActive.Edid != NULL) {\r
1040 FreePool (BiosVideoPrivate->EdidActive.Edid);\r
1041 }\r
1042\r
1043 if (BiosVideoPrivate->GopDevicePath!= NULL) {\r
1044 FreePool (BiosVideoPrivate->GopDevicePath);\r
1045 }\r
1046\r
1047 FreePool (BiosVideoPrivate);\r
1048\r
1049 return ;\r
1050}\r
1051\r
1052\r
1053/**\r
1054 Generate a search key for a specified timing data.\r
1055\r
1056 @param EdidTiming Pointer to EDID timing\r
1057\r
1058 @return The 32 bit unique key for search.\r
1059\r
1060**/\r
1061UINT32\r
1062CalculateEdidKey (\r
1063 VESA_BIOS_EXTENSIONS_EDID_TIMING *EdidTiming\r
1064 )\r
1065{\r
1066 UINT32 Key;\r
1067\r
1068 //\r
1069 // Be sure no conflicts for all standard timing defined by VESA.\r
1070 //\r
1071 Key = (EdidTiming->HorizontalResolution * 2) + EdidTiming->VerticalResolution;\r
1072 return Key;\r
1073}\r
1074\r
1075\r
1076/**\r
1077 Parse the Established Timing and Standard Timing in EDID data block.\r
1078\r
1079 @param EdidBuffer Pointer to EDID data block\r
1080 @param ValidEdidTiming Valid EDID timing information\r
1081\r
1082 @retval TRUE The EDID data is valid.\r
1083 @retval FALSE The EDID data is invalid.\r
1084\r
1085**/\r
1086BOOLEAN\r
1087ParseEdidData (\r
1088 UINT8 *EdidBuffer,\r
1089 VESA_BIOS_EXTENSIONS_VALID_EDID_TIMING *ValidEdidTiming\r
1090 )\r
1091{\r
1092 UINT8 CheckSum;\r
1093 UINT32 Index;\r
1094 UINT32 ValidNumber;\r
1095 UINT32 TimingBits;\r
1096 UINT8 *BufferIndex;\r
1097 UINT16 HorizontalResolution;\r
1098 UINT16 VerticalResolution;\r
1099 UINT8 AspectRatio;\r
1100 UINT8 RefreshRate;\r
1101 VESA_BIOS_EXTENSIONS_EDID_TIMING TempTiming;\r
1102 VESA_BIOS_EXTENSIONS_EDID_DATA_BLOCK *EdidDataBlock;\r
1103\r
1104 EdidDataBlock = (VESA_BIOS_EXTENSIONS_EDID_DATA_BLOCK *) EdidBuffer;\r
1105\r
1106 //\r
1107 // Check the checksum of EDID data\r
1108 //\r
1109 CheckSum = 0;\r
1110 for (Index = 0; Index < VESA_BIOS_EXTENSIONS_EDID_BLOCK_SIZE; Index ++) {\r
1111 CheckSum = (UINT8) (CheckSum + EdidBuffer[Index]);\r
1112 }\r
1113 if (CheckSum != 0) {\r
1114 return FALSE;\r
1115 }\r
1116\r
1117 ValidNumber = 0;\r
1118 gBS->SetMem (ValidEdidTiming, sizeof (VESA_BIOS_EXTENSIONS_VALID_EDID_TIMING), 0);\r
1119\r
1120 if ((EdidDataBlock->EstablishedTimings[0] != 0) ||\r
1121 (EdidDataBlock->EstablishedTimings[1] != 0) ||\r
1122 (EdidDataBlock->EstablishedTimings[2] != 0)\r
1123 ) {\r
1124 //\r
1125 // Established timing data\r
1126 //\r
1127 TimingBits = EdidDataBlock->EstablishedTimings[0] |\r
1128 (EdidDataBlock->EstablishedTimings[1] << 8) |\r
1129 ((EdidDataBlock->EstablishedTimings[2] & 0x80) << 9) ;\r
1130 for (Index = 0; Index < VESA_BIOS_EXTENSIONS_EDID_ESTABLISHED_TIMING_MAX_NUMBER; Index ++) {\r
1131 if ((TimingBits & 0x1) != 0) {\r
2e0910ac 1132 DEBUG ((EFI_D_INFO, "Established Timing: %d x %d\n",\r
1133 mEstablishedEdidTiming[Index].HorizontalResolution, mEstablishedEdidTiming[Index].VerticalResolution));\r
bcecde14 1134 ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&mEstablishedEdidTiming[Index]);\r
1135 ValidNumber ++;\r
1136 }\r
1137 TimingBits = TimingBits >> 1;\r
1138 }\r
2e0910ac 1139 }\r
1140\r
1141 //\r
1142 // Parse the standard timing data\r
1143 //\r
1144 BufferIndex = &EdidDataBlock->StandardTimingIdentification[0];\r
1145 for (Index = 0; Index < 8; Index ++) {\r
bcecde14 1146 //\r
2e0910ac 1147 // Check if this is a valid Standard Timing entry\r
1148 // VESA documents unused fields should be set to 01h\r
bcecde14 1149 //\r
2e0910ac 1150 if ((BufferIndex[0] != 0x1) && (BufferIndex[1] != 0x1)){\r
1151 //\r
1152 // A valid Standard Timing\r
1153 //\r
1154 HorizontalResolution = (UINT16) (BufferIndex[0] * 8 + 248);\r
1155 AspectRatio = (UINT8) (BufferIndex[1] >> 6);\r
1156 switch (AspectRatio) {\r
1157 case 0:\r
1158 VerticalResolution = (UINT16) (HorizontalResolution / 16 * 10);\r
1159 break;\r
1160 case 1:\r
1161 VerticalResolution = (UINT16) (HorizontalResolution / 4 * 3);\r
1162 break;\r
1163 case 2:\r
1164 VerticalResolution = (UINT16) (HorizontalResolution / 5 * 4);\r
1165 break;\r
1166 case 3:\r
1167 VerticalResolution = (UINT16) (HorizontalResolution / 16 * 9);\r
1168 break;\r
1169 default:\r
1170 VerticalResolution = (UINT16) (HorizontalResolution / 4 * 3);\r
1171 break;\r
bcecde14 1172 }\r
2e0910ac 1173 RefreshRate = (UINT8) ((BufferIndex[1] & 0x1f) + 60);\r
1174 DEBUG ((EFI_D_INFO, "Standard Timing: %d x %d\n", HorizontalResolution, VerticalResolution));\r
1175 TempTiming.HorizontalResolution = HorizontalResolution;\r
1176 TempTiming.VerticalResolution = VerticalResolution;\r
1177 TempTiming.RefreshRate = RefreshRate;\r
1178 ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&TempTiming);\r
1179 ValidNumber ++;\r
1180 }\r
1181 BufferIndex += 2;\r
1182 }\r
1183\r
1184 //\r
1185 // Parse the Detailed Timing data\r
1186 //\r
1187 BufferIndex = &EdidDataBlock->DetailedTimingDescriptions[0];\r
1188 for (Index = 0; Index < 4; Index ++, BufferIndex += VESA_BIOS_EXTENSIONS_DETAILED_TIMING_EACH_DESCRIPTOR_SIZE) {\r
1189 if ((BufferIndex[0] == 0x0) && (BufferIndex[1] == 0x0)) {\r
1190 //\r
1191 // Check if this is a valid Detailed Timing Descriptor\r
1192 // If first 2 bytes are zero, it is monitor descriptor other than detailed timing descriptor\r
1193 //\r
1194 continue;\r
bcecde14 1195 }\r
2e0910ac 1196 //\r
1197 // Calculate Horizontal and Vertical resolution\r
1198 //\r
1199 TempTiming.HorizontalResolution = ((UINT16)(BufferIndex[4] & 0xF0) << 4) | (BufferIndex[2]);\r
1200 TempTiming.VerticalResolution = ((UINT16)(BufferIndex[7] & 0xF0) << 4) | (BufferIndex[5]);\r
1201 DEBUG ((EFI_D_INFO, "Detailed Timing %d: %d x %d\n",\r
1202 Index, TempTiming.HorizontalResolution, TempTiming.VerticalResolution));\r
1203 ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&TempTiming);\r
1204 ValidNumber ++;\r
bcecde14 1205 }\r
1206\r
1207 ValidEdidTiming->ValidNumber = ValidNumber;\r
1208 return TRUE;\r
1209}\r
1210\r
1211\r
1212/**\r
1213 Search a specified Timing in all the valid EDID timings.\r
1214\r
1215 @param ValidEdidTiming All valid EDID timing information.\r
1216 @param EdidTiming The Timing to search for.\r
1217\r
1218 @retval TRUE Found.\r
1219 @retval FALSE Not found.\r
1220\r
1221**/\r
1222BOOLEAN\r
1223SearchEdidTiming (\r
1224 VESA_BIOS_EXTENSIONS_VALID_EDID_TIMING *ValidEdidTiming,\r
1225 VESA_BIOS_EXTENSIONS_EDID_TIMING *EdidTiming\r
1226 )\r
1227{\r
1228 UINT32 Index;\r
1229 UINT32 Key;\r
1230\r
1231 Key = CalculateEdidKey (EdidTiming);\r
1232\r
1233 for (Index = 0; Index < ValidEdidTiming->ValidNumber; Index ++) {\r
1234 if (Key == ValidEdidTiming->Key[Index]) {\r
1235 return TRUE;\r
1236 }\r
1237 }\r
1238\r
1239 return FALSE;\r
1240}\r
1241\r
eca7d271 1242/**\r
1243 Check if all video child handles have been uninstalled.\r
1244\r
1245 @param Controller Video controller handle\r
1246\r
1247 @return TRUE Child handles exist.\r
1248 @return FALSE All video child handles have been uninstalled.\r
1249\r
1250**/\r
1251BOOLEAN\r
1252HasChildHandle (\r
1253 IN EFI_HANDLE Controller\r
1254 )\r
1255{\r
1256 UINTN Index;\r
1257 EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;\r
1258 UINTN EntryCount;\r
1259 BOOLEAN HasChild;\r
1260 EFI_STATUS Status;\r
1261\r
1262 EntryCount = 0;\r
1263 HasChild = FALSE;\r
1264 Status = gBS->OpenProtocolInformation (\r
1265 Controller,\r
1266 &gEfiPciIoProtocolGuid,\r
1267 &OpenInfoBuffer,\r
1268 &EntryCount\r
1269 );\r
1270 for (Index = 0; Index < EntryCount; Index++) {\r
1271 if ((OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {\r
1272 HasChild = TRUE;\r
1273 }\r
1274 }\r
1275 \r
1276 return HasChild;\r
1277}\r
bcecde14 1278\r
1279/**\r
1280 Check for VBE device.\r
1281\r
1282 @param BiosVideoPrivate Pointer to BIOS_VIDEO_DEV structure\r
1283\r
1284 @retval EFI_SUCCESS VBE device found\r
1285\r
1286**/\r
1287EFI_STATUS\r
1288BiosVideoCheckForVbe (\r
1289 IN OUT BIOS_VIDEO_DEV *BiosVideoPrivate\r
1290 )\r
1291{\r
1292 EFI_STATUS Status;\r
1293 EFI_IA32_REGISTER_SET Regs;\r
1294 UINT16 *ModeNumberPtr;\r
e6fa7890 1295 UINT16 VbeModeNumber;\r
bcecde14 1296 BOOLEAN ModeFound;\r
1297 BOOLEAN EdidFound;\r
1298 BIOS_VIDEO_MODE_DATA *ModeBuffer;\r
1299 BIOS_VIDEO_MODE_DATA *CurrentModeData;\r
1300 UINTN PreferMode;\r
1301 UINTN ModeNumber;\r
1302 VESA_BIOS_EXTENSIONS_EDID_TIMING Timing;\r
1303 VESA_BIOS_EXTENSIONS_VALID_EDID_TIMING ValidEdidTiming;\r
1304 EFI_EDID_OVERRIDE_PROTOCOL *EdidOverride;\r
1305 UINT32 EdidAttributes;\r
1306 BOOLEAN EdidOverrideFound;\r
1307 UINTN EdidOverrideDataSize;\r
1308 UINT8 *EdidOverrideDataBlock;\r
1309 UINTN EdidActiveDataSize;\r
1310 UINT8 *EdidActiveDataBlock;\r
675253b4 1311 UINT32 HighestHorizontalResolution;\r
1312 UINT32 HighestVerticalResolution;\r
1313 UINTN HighestResolutionMode;\r
bcecde14 1314\r
1315 EdidFound = TRUE;\r
1316 EdidOverrideFound = FALSE;\r
1317 EdidOverrideDataBlock = NULL;\r
1318 EdidActiveDataSize = 0;\r
1319 EdidActiveDataBlock = NULL;\r
675253b4 1320 HighestHorizontalResolution = 0;\r
1321 HighestVerticalResolution = 0;\r
1322 HighestResolutionMode = 0;\r
bcecde14 1323\r
1324 //\r
1325 // Allocate buffer under 1MB for VBE data structures\r
1326 //\r
1327 BiosVideoPrivate->NumberOfPagesBelow1MB = EFI_SIZE_TO_PAGES (\r
1328 sizeof (VESA_BIOS_EXTENSIONS_INFORMATION_BLOCK) +\r
1329 sizeof (VESA_BIOS_EXTENSIONS_MODE_INFORMATION_BLOCK) +\r
1330 sizeof (VESA_BIOS_EXTENSIONS_EDID_DATA_BLOCK) +\r
1331 sizeof (VESA_BIOS_EXTENSIONS_CRTC_INFORMATION_BLOCK)\r
1332 );\r
1333\r
1334 BiosVideoPrivate->PagesBelow1MB = 0x00100000 - 1;\r
1335\r
1336 Status = gBS->AllocatePages (\r
1337 AllocateMaxAddress,\r
1338 EfiBootServicesData,\r
1339 BiosVideoPrivate->NumberOfPagesBelow1MB,\r
1340 &BiosVideoPrivate->PagesBelow1MB\r
1341 );\r
1342 if (EFI_ERROR (Status)) {\r
1343 return Status;\r
1344 }\r
1345\r
1346 ZeroMem (&ValidEdidTiming, sizeof (VESA_BIOS_EXTENSIONS_VALID_EDID_TIMING));\r
1347 \r
1348 //\r
1349 // Fill in the VBE related data structures\r
1350 //\r
1351 BiosVideoPrivate->VbeInformationBlock = (VESA_BIOS_EXTENSIONS_INFORMATION_BLOCK *) (UINTN) (BiosVideoPrivate->PagesBelow1MB);\r
1352 BiosVideoPrivate->VbeModeInformationBlock = (VESA_BIOS_EXTENSIONS_MODE_INFORMATION_BLOCK *) (BiosVideoPrivate->VbeInformationBlock + 1);\r
1353 BiosVideoPrivate->VbeEdidDataBlock = (VESA_BIOS_EXTENSIONS_EDID_DATA_BLOCK *) (BiosVideoPrivate->VbeModeInformationBlock + 1);\r
1354 BiosVideoPrivate->VbeCrtcInformationBlock = (VESA_BIOS_EXTENSIONS_CRTC_INFORMATION_BLOCK *) (BiosVideoPrivate->VbeEdidDataBlock + 1);\r
1355 BiosVideoPrivate->VbeSaveRestorePages = 0;\r
1356 BiosVideoPrivate->VbeSaveRestoreBuffer = 0;\r
1357\r
1358 //\r
1359 // Test to see if the Video Adapter is compliant with VBE 3.0\r
1360 //\r
1361 gBS->SetMem (&Regs, sizeof (Regs), 0);\r
1362 Regs.X.AX = VESA_BIOS_EXTENSIONS_RETURN_CONTROLLER_INFORMATION;\r
1363 gBS->SetMem (BiosVideoPrivate->VbeInformationBlock, sizeof (VESA_BIOS_EXTENSIONS_INFORMATION_BLOCK), 0);\r
1364 BiosVideoPrivate->VbeInformationBlock->VESASignature = VESA_BIOS_EXTENSIONS_VBE2_SIGNATURE;\r
1365 Regs.X.ES = EFI_SEGMENT ((UINTN) BiosVideoPrivate->VbeInformationBlock);\r
1366 Regs.X.DI = EFI_OFFSET ((UINTN) BiosVideoPrivate->VbeInformationBlock);\r
1367\r
1368 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
1369\r
1370 Status = EFI_DEVICE_ERROR;\r
1371\r
1372 //\r
1373 // See if the VESA call succeeded\r
1374 //\r
1375 if (Regs.X.AX != VESA_BIOS_EXTENSIONS_STATUS_SUCCESS) {\r
1376 return Status;\r
1377 }\r
1378 //\r
1379 // Check for 'VESA' signature\r
1380 //\r
1381 if (BiosVideoPrivate->VbeInformationBlock->VESASignature != VESA_BIOS_EXTENSIONS_VESA_SIGNATURE) {\r
1382 return Status;\r
1383 }\r
1384 //\r
1385 // Check to see if this is VBE 2.0 or higher\r
1386 //\r
1387 if (BiosVideoPrivate->VbeInformationBlock->VESAVersion < VESA_BIOS_EXTENSIONS_VERSION_2_0) {\r
1388 return Status;\r
1389 }\r
1390\r
1391 EdidFound = FALSE;\r
1392 EdidAttributes = 0xff;\r
1393 EdidOverrideDataSize = 0;\r
1394\r
1395 //\r
1396 // Find EDID Override protocol firstly, this protocol is installed by platform if needed.\r
1397 //\r
1398 Status = gBS->LocateProtocol (\r
1399 &gEfiEdidOverrideProtocolGuid,\r
1400 NULL,\r
1401 (VOID **) &EdidOverride\r
1402 );\r
1403 if (!EFI_ERROR (Status)) {\r
1404 //\r
1405 // Allocate double size of VESA_BIOS_EXTENSIONS_EDID_BLOCK_SIZE to avoid overflow\r
1406 //\r
60bee0c9 1407 EdidOverrideDataBlock = AllocatePool (VESA_BIOS_EXTENSIONS_EDID_BLOCK_SIZE * 2);\r
bcecde14 1408 if (NULL == EdidOverrideDataBlock) {\r
1409 Status = EFI_OUT_OF_RESOURCES;\r
1410 goto Done;\r
1411 }\r
1412\r
1413 Status = EdidOverride->GetEdid (\r
1414 EdidOverride,\r
1415 BiosVideoPrivate->Handle,\r
1416 &EdidAttributes,\r
1417 &EdidOverrideDataSize,\r
1418 (UINT8 **) &EdidOverrideDataBlock\r
1419 );\r
1420 if (!EFI_ERROR (Status) &&\r
1421 EdidAttributes == 0 &&\r
1422 EdidOverrideDataSize != 0) {\r
1423 //\r
1424 // Succeeded to get EDID Override Data\r
1425 //\r
1426 EdidOverrideFound = TRUE;\r
1427 }\r
1428 }\r
1429\r
1430 if (!EdidOverrideFound || EdidAttributes == EFI_EDID_OVERRIDE_DONT_OVERRIDE) {\r
1431 //\r
1432 // If EDID Override data doesn't exist or EFI_EDID_OVERRIDE_DONT_OVERRIDE returned,\r
1433 // read EDID information through INT10 call\r
1434 //\r
1435\r
1436 gBS->SetMem (&Regs, sizeof (Regs), 0);\r
1437 Regs.X.AX = VESA_BIOS_EXTENSIONS_EDID;\r
1438 Regs.X.BX = 1;\r
1439 Regs.X.CX = 0;\r
1440 Regs.X.DX = 0;\r
1441 Regs.X.ES = EFI_SEGMENT ((UINTN) BiosVideoPrivate->VbeEdidDataBlock);\r
1442 Regs.X.DI = EFI_OFFSET ((UINTN) BiosVideoPrivate->VbeEdidDataBlock);\r
1443\r
1444 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
1445 //\r
1446 // See if the VESA call succeeded\r
1447 //\r
1448 if (Regs.X.AX == VESA_BIOS_EXTENSIONS_STATUS_SUCCESS) {\r
1449 //\r
1450 // Set EDID Discovered Data\r
1451 //\r
1452 BiosVideoPrivate->EdidDiscovered.SizeOfEdid = VESA_BIOS_EXTENSIONS_EDID_BLOCK_SIZE;\r
1453 BiosVideoPrivate->EdidDiscovered.Edid = (UINT8 *) AllocateCopyPool (\r
1454 VESA_BIOS_EXTENSIONS_EDID_BLOCK_SIZE,\r
1455 BiosVideoPrivate->VbeEdidDataBlock\r
1456 );\r
1457\r
1458 if (NULL == BiosVideoPrivate->EdidDiscovered.Edid) {\r
1459 Status = EFI_OUT_OF_RESOURCES;\r
1460 goto Done;\r
1461 }\r
1462\r
1463 EdidFound = TRUE;\r
1464 }\r
1465 }\r
1466\r
1467 if (EdidFound) {\r
1468 EdidActiveDataSize = VESA_BIOS_EXTENSIONS_EDID_BLOCK_SIZE;\r
1469 EdidActiveDataBlock = BiosVideoPrivate->EdidDiscovered.Edid;\r
1470 } else if (EdidOverrideFound) {\r
1471 EdidActiveDataSize = EdidOverrideDataSize;\r
1472 EdidActiveDataBlock = EdidOverrideDataBlock;\r
1473 EdidFound = TRUE;\r
1474 }\r
1475\r
1476 if (EdidFound) {\r
1477 //\r
1478 // Parse EDID data structure to retrieve modes supported by monitor\r
1479 //\r
1480 if (ParseEdidData ((UINT8 *) EdidActiveDataBlock, &ValidEdidTiming)) {\r
1481 //\r
1482 // Copy EDID Override Data to EDID Active Data\r
1483 //\r
1484 BiosVideoPrivate->EdidActive.SizeOfEdid = (UINT32) EdidActiveDataSize;\r
1485 BiosVideoPrivate->EdidActive.Edid = (UINT8 *) AllocateCopyPool (\r
1486 EdidActiveDataSize,\r
1487 EdidActiveDataBlock\r
1488 );\r
1489 if (NULL == BiosVideoPrivate->EdidActive.Edid) {\r
1490 Status = EFI_OUT_OF_RESOURCES;\r
1491 goto Done;\r
1492 }\r
1493 }\r
1494 } else {\r
1495 BiosVideoPrivate->EdidActive.SizeOfEdid = 0;\r
1496 BiosVideoPrivate->EdidActive.Edid = NULL;\r
1497 EdidFound = FALSE;\r
1498 }\r
1499\r
1500 //\r
1501 // Walk through the mode list to see if there is at least one mode the is compatible with the EDID mode\r
1502 //\r
1503 ModeNumberPtr = (UINT16 *)\r
1504 (\r
1505 (((UINTN) BiosVideoPrivate->VbeInformationBlock->VideoModePtr & 0xffff0000) >> 12) |\r
1506 ((UINTN) BiosVideoPrivate->VbeInformationBlock->VideoModePtr & 0x0000ffff)\r
1507 );\r
1508\r
1509 PreferMode = 0;\r
1510 ModeNumber = 0;\r
e6fa7890 1511 \r
1512 //\r
1513 // ModeNumberPtr may be not 16-byte aligned, so ReadUnaligned16 is used to access the buffer pointed by ModeNumberPtr.\r
1514 //\r
1515 for (VbeModeNumber = ReadUnaligned16 (ModeNumberPtr);\r
1516 VbeModeNumber != VESA_BIOS_EXTENSIONS_END_OF_MODE_LIST;\r
1517 VbeModeNumber = ReadUnaligned16 (++ModeNumberPtr)) {\r
bcecde14 1518 //\r
1519 // Make sure this is a mode number defined by the VESA VBE specification. If it isn'tm then skip this mode number.\r
1520 //\r
e6fa7890 1521 if ((VbeModeNumber & VESA_BIOS_EXTENSIONS_MODE_NUMBER_VESA) == 0) {\r
bcecde14 1522 continue;\r
1523 }\r
1524 //\r
1525 // Get the information about the mode\r
1526 //\r
1527 gBS->SetMem (&Regs, sizeof (Regs), 0);\r
1528 Regs.X.AX = VESA_BIOS_EXTENSIONS_RETURN_MODE_INFORMATION;\r
e6fa7890 1529 Regs.X.CX = VbeModeNumber;\r
bcecde14 1530 gBS->SetMem (BiosVideoPrivate->VbeModeInformationBlock, sizeof (VESA_BIOS_EXTENSIONS_MODE_INFORMATION_BLOCK), 0);\r
1531 Regs.X.ES = EFI_SEGMENT ((UINTN) BiosVideoPrivate->VbeModeInformationBlock);\r
1532 Regs.X.DI = EFI_OFFSET ((UINTN) BiosVideoPrivate->VbeModeInformationBlock);\r
1533\r
1534 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
1535\r
1536 //\r
1537 // See if the call succeeded. If it didn't, then try the next mode.\r
1538 //\r
1539 if (Regs.X.AX != VESA_BIOS_EXTENSIONS_STATUS_SUCCESS) {\r
1540 continue;\r
1541 }\r
1542 //\r
1543 // See if the mode supports color. If it doesn't then try the next mode.\r
1544 //\r
1545 if ((BiosVideoPrivate->VbeModeInformationBlock->ModeAttributes & VESA_BIOS_EXTENSIONS_MODE_ATTRIBUTE_COLOR) == 0) {\r
1546 continue;\r
1547 }\r
1548 //\r
1549 // See if the mode supports graphics. If it doesn't then try the next mode.\r
1550 //\r
1551 if ((BiosVideoPrivate->VbeModeInformationBlock->ModeAttributes & VESA_BIOS_EXTENSIONS_MODE_ATTRIBUTE_GRAPHICS) == 0) {\r
1552 continue;\r
1553 }\r
1554 //\r
1555 // See if the mode supports a linear frame buffer. If it doesn't then try the next mode.\r
1556 //\r
1557 if ((BiosVideoPrivate->VbeModeInformationBlock->ModeAttributes & VESA_BIOS_EXTENSIONS_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER) == 0) {\r
1558 continue;\r
1559 }\r
1560 //\r
1561 // See if the mode supports 32 bit color. If it doesn't then try the next mode.\r
1562 // 32 bit mode can be implemented by 24 Bits Per Pixels. Also make sure the\r
1563 // number of bits per pixel is a multiple of 8 or more than 32 bits per pixel\r
1564 //\r
1565 if (BiosVideoPrivate->VbeModeInformationBlock->BitsPerPixel < 24) {\r
1566 continue;\r
1567 }\r
1568\r
1569 if (BiosVideoPrivate->VbeModeInformationBlock->BitsPerPixel > 32) {\r
1570 continue;\r
1571 }\r
1572\r
1573 if ((BiosVideoPrivate->VbeModeInformationBlock->BitsPerPixel % 8) != 0) {\r
1574 continue;\r
1575 }\r
1576 //\r
1577 // See if the physical base pointer for the linear mode is valid. If it isn't then try the next mode.\r
1578 //\r
1579 if (BiosVideoPrivate->VbeModeInformationBlock->PhysBasePtr == 0) {\r
1580 continue;\r
1581 }\r
1582\r
7f7dba5c 1583 DEBUG ((EFI_D_INFO, "Video Controller Mode 0x%x: %d x %d\n",\r
1584 VbeModeNumber, BiosVideoPrivate->VbeModeInformationBlock->XResolution, BiosVideoPrivate->VbeModeInformationBlock->YResolution));\r
1585\r
bcecde14 1586 if (EdidFound && (ValidEdidTiming.ValidNumber > 0)) {\r
1587 //\r
1588 // EDID exist, check whether this mode match with any mode in EDID\r
1589 //\r
1590 Timing.HorizontalResolution = BiosVideoPrivate->VbeModeInformationBlock->XResolution;\r
1591 Timing.VerticalResolution = BiosVideoPrivate->VbeModeInformationBlock->YResolution;\r
1592 if (!SearchEdidTiming (&ValidEdidTiming, &Timing)) {\r
1593 continue;\r
1594 }\r
1595 }\r
1596\r
1597 //\r
1598 // Select a reasonable mode to be set for current display mode\r
1599 //\r
1600 ModeFound = FALSE;\r
1601\r
1602 if (BiosVideoPrivate->VbeModeInformationBlock->XResolution == 1024 &&\r
1603 BiosVideoPrivate->VbeModeInformationBlock->YResolution == 768\r
1604 ) {\r
1605 ModeFound = TRUE;\r
1606 }\r
1607 if (BiosVideoPrivate->VbeModeInformationBlock->XResolution == 800 &&\r
1608 BiosVideoPrivate->VbeModeInformationBlock->YResolution == 600\r
1609 ) {\r
1610 ModeFound = TRUE;\r
1611 PreferMode = ModeNumber;\r
1612 }\r
1613 if (BiosVideoPrivate->VbeModeInformationBlock->XResolution == 640 &&\r
1614 BiosVideoPrivate->VbeModeInformationBlock->YResolution == 480\r
1615 ) {\r
1616 ModeFound = TRUE;\r
1617 }\r
1618\r
1619 if ((!EdidFound) && (!ModeFound)) {\r
1620 //\r
1621 // When no EDID exist, only select three possible resolutions, i.e. 1024x768, 800x600, 640x480\r
1622 //\r
1623 continue;\r
1624 }\r
1625\r
675253b4 1626 //\r
1627 // Record the highest resolution mode to set later\r
1628 //\r
7f7dba5c 1629 if ((BiosVideoPrivate->VbeModeInformationBlock->XResolution > HighestHorizontalResolution) ||\r
1630 ((BiosVideoPrivate->VbeModeInformationBlock->XResolution == HighestHorizontalResolution) && \r
1631 (BiosVideoPrivate->VbeModeInformationBlock->YResolution > HighestVerticalResolution))) {\r
675253b4 1632 HighestHorizontalResolution = BiosVideoPrivate->VbeModeInformationBlock->XResolution;\r
1633 HighestVerticalResolution = BiosVideoPrivate->VbeModeInformationBlock->YResolution;\r
1634 HighestResolutionMode = ModeNumber;\r
1635 }\r
1636\r
bcecde14 1637 //\r
1638 // Add mode to the list of available modes\r
1639 //\r
1640 ModeNumber ++;\r
1641 ModeBuffer = (BIOS_VIDEO_MODE_DATA *) AllocatePool (\r
1642 ModeNumber * sizeof (BIOS_VIDEO_MODE_DATA)\r
1643 );\r
1644 if (NULL == ModeBuffer) {\r
1645 Status = EFI_OUT_OF_RESOURCES;\r
1646 goto Done;\r
1647 }\r
1648\r
1649 if (ModeNumber > 1) {\r
1650 CopyMem (\r
1651 ModeBuffer,\r
1652 BiosVideoPrivate->ModeData,\r
1653 (ModeNumber - 1) * sizeof (BIOS_VIDEO_MODE_DATA)\r
1654 );\r
1655 }\r
1656\r
1657 if (BiosVideoPrivate->ModeData != NULL) {\r
1658 FreePool (BiosVideoPrivate->ModeData);\r
1659 }\r
1660\r
1661 CurrentModeData = &ModeBuffer[ModeNumber - 1];\r
e6fa7890 1662 CurrentModeData->VbeModeNumber = VbeModeNumber;\r
bcecde14 1663 if (BiosVideoPrivate->VbeInformationBlock->VESAVersion >= VESA_BIOS_EXTENSIONS_VERSION_3_0) {\r
1664 CurrentModeData->BytesPerScanLine = BiosVideoPrivate->VbeModeInformationBlock->LinBytesPerScanLine;\r
1665 CurrentModeData->Red.Position = BiosVideoPrivate->VbeModeInformationBlock->LinRedFieldPosition;\r
1666 CurrentModeData->Red.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->LinRedMaskSize) - 1);\r
1667 CurrentModeData->Blue.Position = BiosVideoPrivate->VbeModeInformationBlock->LinBlueFieldPosition;\r
1668 CurrentModeData->Blue.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->LinBlueMaskSize) - 1);\r
1669 CurrentModeData->Green.Position = BiosVideoPrivate->VbeModeInformationBlock->LinGreenFieldPosition;\r
1670 CurrentModeData->Green.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->LinGreenMaskSize) - 1);\r
1671 CurrentModeData->Reserved.Position = BiosVideoPrivate->VbeModeInformationBlock->LinRsvdFieldPosition;\r
1672 CurrentModeData->Reserved.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->LinRsvdMaskSize) - 1);\r
1673 } else {\r
1674 CurrentModeData->BytesPerScanLine = BiosVideoPrivate->VbeModeInformationBlock->BytesPerScanLine;\r
1675 CurrentModeData->Red.Position = BiosVideoPrivate->VbeModeInformationBlock->RedFieldPosition;\r
1676 CurrentModeData->Red.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->RedMaskSize) - 1);\r
1677 CurrentModeData->Blue.Position = BiosVideoPrivate->VbeModeInformationBlock->BlueFieldPosition;\r
1678 CurrentModeData->Blue.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->BlueMaskSize) - 1);\r
1679 CurrentModeData->Green.Position = BiosVideoPrivate->VbeModeInformationBlock->GreenFieldPosition;\r
1680 CurrentModeData->Green.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->GreenMaskSize) - 1);\r
1681 CurrentModeData->Reserved.Position = BiosVideoPrivate->VbeModeInformationBlock->RsvdFieldPosition;\r
1682 CurrentModeData->Reserved.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->RsvdMaskSize) - 1);\r
1683 }\r
1684\r
1685 CurrentModeData->PixelFormat = PixelBitMask;\r
1686 if ((BiosVideoPrivate->VbeModeInformationBlock->BitsPerPixel == 32) &&\r
1687 (CurrentModeData->Red.Mask == 0xff) && (CurrentModeData->Green.Mask == 0xff) && (CurrentModeData->Blue.Mask == 0xff)) {\r
1688 if ((CurrentModeData->Red.Position == 0) && (CurrentModeData->Green.Position == 8) && (CurrentModeData->Blue.Position == 16)) {\r
1689 CurrentModeData->PixelFormat = PixelRedGreenBlueReserved8BitPerColor;\r
1690 } else if ((CurrentModeData->Blue.Position == 0) && (CurrentModeData->Green.Position == 8) && (CurrentModeData->Red.Position == 16)) {\r
1691 CurrentModeData->PixelFormat = PixelBlueGreenRedReserved8BitPerColor;\r
1692 }\r
1693 }\r
1694\r
1695 CurrentModeData->PixelBitMask.RedMask = ((UINT32) CurrentModeData->Red.Mask) << CurrentModeData->Red.Position;\r
1696 CurrentModeData->PixelBitMask.GreenMask = ((UINT32) CurrentModeData->Green.Mask) << CurrentModeData->Green.Position;\r
1697 CurrentModeData->PixelBitMask.BlueMask = ((UINT32) CurrentModeData->Blue.Mask) << CurrentModeData->Blue.Position;\r
1698 CurrentModeData->PixelBitMask.ReservedMask = ((UINT32) CurrentModeData->Reserved.Mask) << CurrentModeData->Reserved.Position;\r
bcecde14 1699\r
1700 CurrentModeData->LinearFrameBuffer = (VOID *) (UINTN)BiosVideoPrivate->VbeModeInformationBlock->PhysBasePtr;\r
1701 CurrentModeData->HorizontalResolution = BiosVideoPrivate->VbeModeInformationBlock->XResolution;\r
1702 CurrentModeData->VerticalResolution = BiosVideoPrivate->VbeModeInformationBlock->YResolution;\r
1703\r
1704 CurrentModeData->BitsPerPixel = BiosVideoPrivate->VbeModeInformationBlock->BitsPerPixel;\r
554e88d2 1705 CurrentModeData->FrameBufferSize = CurrentModeData->BytesPerScanLine * CurrentModeData->VerticalResolution;\r
1706 //\r
1707 // Make sure the FrameBufferSize does not exceed the max available frame buffer size reported by VEB.\r
1708 //\r
6c2f76ed 1709 ASSERT (CurrentModeData->FrameBufferSize <= (UINTN)(BiosVideoPrivate->VbeInformationBlock->TotalMemory * 64 * 1024));\r
554e88d2 1710 \r
bcecde14 1711 BiosVideoPrivate->ModeData = ModeBuffer;\r
1712 }\r
1713 //\r
1714 // Check to see if we found any modes that are compatible with GRAPHICS OUTPUT\r
1715 //\r
1716 if (ModeNumber == 0) {\r
1717 Status = EFI_DEVICE_ERROR;\r
1718 goto Done;\r
1719 }\r
1720\r
1721 //\r
1722 // Assign Gop's Blt function\r
1723 //\r
1724 BiosVideoPrivate->GraphicsOutput.Blt = BiosVideoGraphicsOutputVbeBlt;\r
1725\r
1726 BiosVideoPrivate->GraphicsOutput.Mode->MaxMode = (UINT32) ModeNumber;\r
1727 //\r
1728 // Current mode is unknow till now, set it to an invalid mode.\r
1729 //\r
1730 BiosVideoPrivate->GraphicsOutput.Mode->Mode = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER;\r
1731\r
1732 //\r
1733 // Find the best mode to initialize\r
1734 //\r
675253b4 1735 if ((PcdGet32 (PcdVideoHorizontalResolution) == 0x0) || (PcdGet32 (PcdVideoVerticalResolution) == 0x0)) {\r
1736 DEBUG_CODE (\r
1737 BIOS_VIDEO_MODE_DATA *ModeData;\r
1738 ModeData = &BiosVideoPrivate->ModeData[HighestResolutionMode];\r
1739 DEBUG ((EFI_D_INFO, "BiosVideo set highest resolution %d x %d\n",\r
1740 ModeData->HorizontalResolution, ModeData->VerticalResolution));\r
1741 );\r
1742 PreferMode = HighestResolutionMode;\r
1743 }\r
bcecde14 1744 Status = BiosVideoGraphicsOutputSetMode (&BiosVideoPrivate->GraphicsOutput, (UINT32) PreferMode);\r
1745 if (EFI_ERROR (Status)) {\r
1746 for (PreferMode = 0; PreferMode < ModeNumber; PreferMode ++) {\r
1747 Status = BiosVideoGraphicsOutputSetMode (\r
1748 &BiosVideoPrivate->GraphicsOutput,\r
1749 (UINT32) PreferMode\r
1750 );\r
1751 if (!EFI_ERROR (Status)) {\r
1752 break;\r
1753 }\r
1754 }\r
1755 if (PreferMode == ModeNumber) {\r
1756 //\r
1757 // None mode is set successfully.\r
1758 //\r
1759 goto Done;\r
1760 }\r
1761 }\r
1762\r
1763Done:\r
1764 //\r
1765 // If there was an error, then free the mode structure\r
1766 //\r
1767 if (EFI_ERROR (Status)) {\r
1768 if (BiosVideoPrivate->ModeData != NULL) {\r
1769 FreePool (BiosVideoPrivate->ModeData);\r
1770 BiosVideoPrivate->ModeData = NULL;\r
1771 BiosVideoPrivate->MaxMode = 0;\r
1772 }\r
bcecde14 1773 if (EdidOverrideDataBlock != NULL) {\r
1774 FreePool (EdidOverrideDataBlock);\r
1775 }\r
1776 }\r
1777\r
1778 return Status;\r
1779}\r
1780\r
1781\r
1782/**\r
1783 Check for VGA device.\r
1784\r
1785 @param BiosVideoPrivate Pointer to BIOS_VIDEO_DEV structure\r
1786\r
1787 @retval EFI_SUCCESS Standard VGA device found\r
1788\r
1789**/\r
1790EFI_STATUS\r
1791BiosVideoCheckForVga (\r
1792 IN OUT BIOS_VIDEO_DEV *BiosVideoPrivate\r
1793 )\r
1794{\r
1795 EFI_STATUS Status;\r
1796 BIOS_VIDEO_MODE_DATA *ModeBuffer;\r
1797\r
1798 Status = EFI_UNSUPPORTED;\r
1799\r
1800 //\r
1801 // Assign Gop's Blt function\r
1802 //\r
1803 BiosVideoPrivate->GraphicsOutput.Blt = BiosVideoGraphicsOutputVgaBlt;\r
1804\r
1805 //\r
1806 // Add mode to the list of available modes\r
1807 // caller should guarantee that Mode has been allocated.\r
1808 //\r
1809 ASSERT (BiosVideoPrivate->GraphicsOutput.Mode != NULL);\r
1810 BiosVideoPrivate->GraphicsOutput.Mode->MaxMode = 1;\r
1811\r
1812 ModeBuffer = (BIOS_VIDEO_MODE_DATA *) AllocatePool (\r
1813 sizeof (BIOS_VIDEO_MODE_DATA)\r
1814 );\r
1815 if (NULL == ModeBuffer) {\r
1816 Status = EFI_OUT_OF_RESOURCES;\r
1817 goto Done;\r
1818 }\r
1819\r
1820 ModeBuffer->VbeModeNumber = 0x0012;\r
1821 ModeBuffer->BytesPerScanLine = 640;\r
1822 ModeBuffer->LinearFrameBuffer = (VOID *) (UINTN) (0xa0000);\r
1823 ModeBuffer->HorizontalResolution = 640;\r
1824 ModeBuffer->VerticalResolution = 480;\r
1825 ModeBuffer->PixelFormat = PixelBltOnly;\r
1826 ModeBuffer->BitsPerPixel = 8;\r
1827 ModeBuffer->ColorDepth = 32;\r
1828 ModeBuffer->RefreshRate = 60;\r
1829\r
1830 BiosVideoPrivate->ModeData = ModeBuffer;\r
1831\r
1832 //\r
1833 // Test to see if the Video Adapter support the 640x480 16 color mode\r
1834 //\r
1835 BiosVideoPrivate->GraphicsOutput.Mode->Mode = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER;\r
1836 Status = BiosVideoGraphicsOutputSetMode (&BiosVideoPrivate->GraphicsOutput, 0);\r
1837\r
1838Done:\r
1839 //\r
1840 // If there was an error, then free the mode structure\r
1841 //\r
1842 if (EFI_ERROR (Status)) {\r
1843 if (BiosVideoPrivate->ModeData != NULL) {\r
1844 FreePool (BiosVideoPrivate->ModeData);\r
1845 BiosVideoPrivate->ModeData = NULL;\r
1846 }\r
1847 if (BiosVideoPrivate->GraphicsOutput.Mode != NULL) {\r
1848 if (BiosVideoPrivate->GraphicsOutput.Mode->Info != NULL) {\r
1849 FreePool (BiosVideoPrivate->GraphicsOutput.Mode->Info);\r
1850 BiosVideoPrivate->GraphicsOutput.Mode->Info = NULL;\r
1851 }\r
1852 FreePool (BiosVideoPrivate->GraphicsOutput.Mode);\r
1853 BiosVideoPrivate->GraphicsOutput.Mode = NULL;\r
1854 }\r
1855 }\r
1856 return Status;\r
1857}\r
1858\r
1859//\r
1860// Graphics Output Protocol Member Functions for VESA BIOS Extensions\r
1861//\r
1862\r
1863/**\r
1864 Graphics Output protocol interface to get video mode.\r
1865\r
1866 @param This Protocol instance pointer.\r
1867 @param ModeNumber The mode number to return information on.\r
1868 @param SizeOfInfo A pointer to the size, in bytes, of the Info\r
1869 buffer.\r
1870 @param Info Caller allocated buffer that returns information\r
1871 about ModeNumber.\r
1872\r
1873 @retval EFI_SUCCESS Mode information returned.\r
1874 @retval EFI_DEVICE_ERROR A hardware error occurred trying to retrieve the\r
1875 video mode.\r
1876 @retval EFI_NOT_STARTED Video display is not initialized. Call SetMode ()\r
1877 @retval EFI_INVALID_PARAMETER One of the input args was NULL.\r
1878\r
1879**/\r
1880EFI_STATUS\r
1881EFIAPI\r
1882BiosVideoGraphicsOutputQueryMode (\r
1883 IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,\r
1884 IN UINT32 ModeNumber,\r
1885 OUT UINTN *SizeOfInfo,\r
1886 OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info\r
1887 )\r
1888{\r
1889 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
1890 BIOS_VIDEO_MODE_DATA *ModeData;\r
1891\r
1892 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS (This);\r
1893\r
1894 if (BiosVideoPrivate->HardwareNeedsStarting) {\r
1895 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
1896 EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
1897 EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_EC_OUTPUT_ERROR,\r
1898 BiosVideoPrivate->GopDevicePath\r
1899 );\r
1900 return EFI_NOT_STARTED;\r
1901 }\r
1902\r
1903 if (This == NULL || Info == NULL || SizeOfInfo == NULL || ModeNumber >= This->Mode->MaxMode) {\r
1904 return EFI_INVALID_PARAMETER;\r
1905 }\r
1906\r
1907 *Info = (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *) AllocatePool (\r
1908 sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION)\r
1909 );\r
1910 if (NULL == *Info) {\r
1911 return EFI_OUT_OF_RESOURCES;\r
1912 }\r
1913\r
1914 *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);\r
1915\r
1916 ModeData = &BiosVideoPrivate->ModeData[ModeNumber];\r
1917 (*Info)->Version = 0;\r
1918 (*Info)->HorizontalResolution = ModeData->HorizontalResolution;\r
1919 (*Info)->VerticalResolution = ModeData->VerticalResolution;\r
1920 (*Info)->PixelFormat = ModeData->PixelFormat;\r
1921 CopyMem (&((*Info)->PixelInformation), &(ModeData->PixelBitMask), sizeof(ModeData->PixelBitMask));\r
1922\r
1923 (*Info)->PixelsPerScanLine = (ModeData->BytesPerScanLine * 8) / ModeData->BitsPerPixel;\r
1924\r
1925 return EFI_SUCCESS;\r
1926}\r
1927\r
1928/**\r
1929 Worker function to set video mode.\r
1930\r
1931 @param BiosVideoPrivate Instance of BIOS_VIDEO_DEV.\r
1932 @param ModeData The mode data to be set.\r
1933 @param DevicePath Pointer to Device Path Protocol.\r
1934\r
1935 @retval EFI_SUCCESS Graphics mode was changed.\r
1936 @retval EFI_DEVICE_ERROR The device had an error and could not complete the\r
1937 request.\r
1938 @retval EFI_UNSUPPORTED ModeNumber is not supported by this device.\r
1939\r
1940**/\r
1941EFI_STATUS\r
1942BiosVideoSetModeWorker (\r
1943 IN BIOS_VIDEO_DEV *BiosVideoPrivate,\r
1944 IN BIOS_VIDEO_MODE_DATA *ModeData,\r
1945 IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
1946 )\r
1947{\r
1948 EFI_STATUS Status;\r
1949 EFI_IA32_REGISTER_SET Regs;\r
1950\r
1951 if (BiosVideoPrivate->LineBuffer != NULL) {\r
1952 FreePool (BiosVideoPrivate->LineBuffer);\r
1953 }\r
1954\r
1955 if (BiosVideoPrivate->VgaFrameBuffer != NULL) {\r
1956 FreePool (BiosVideoPrivate->VgaFrameBuffer);\r
1957 }\r
1958\r
1959 if (BiosVideoPrivate->VbeFrameBuffer != NULL) {\r
1960 FreePool (BiosVideoPrivate->VbeFrameBuffer);\r
1961 }\r
1962\r
1963 BiosVideoPrivate->LineBuffer = (UINT8 *) AllocatePool (\r
1964 ModeData->BytesPerScanLine\r
1965 );\r
1966 if (NULL == BiosVideoPrivate->LineBuffer) {\r
1967 return EFI_OUT_OF_RESOURCES;\r
1968 }\r
1969 //\r
1970 // Clear all registers\r
1971 //\r
1972 ZeroMem (&Regs, sizeof (Regs));\r
1973\r
1974 if (ModeData->VbeModeNumber < 0x100) {\r
1975 //\r
1976 // Allocate a working buffer for BLT operations to the VGA frame buffer\r
1977 //\r
1978 BiosVideoPrivate->VgaFrameBuffer = (UINT8 *) AllocatePool (4 * 480 * 80);\r
1979 if (NULL == BiosVideoPrivate->VgaFrameBuffer) {\r
1980 return EFI_OUT_OF_RESOURCES;\r
1981 }\r
1982 //\r
1983 // Set VGA Mode\r
1984 //\r
1985 Regs.X.AX = ModeData->VbeModeNumber;\r
1986 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
1987\r
1988 } else {\r
1989 //\r
1990 // Allocate a working buffer for BLT operations to the VBE frame buffer\r
1991 //\r
1992 BiosVideoPrivate->VbeFrameBuffer =\r
1993 (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) AllocatePool (\r
1994 ModeData->BytesPerScanLine * ModeData->VerticalResolution\r
1995 );\r
1996 if (NULL == BiosVideoPrivate->VbeFrameBuffer) {\r
1997 return EFI_OUT_OF_RESOURCES;\r
1998 }\r
1999 //\r
2000 // Set VBE mode\r
2001 //\r
2002 Regs.X.AX = VESA_BIOS_EXTENSIONS_SET_MODE;\r
2003 Regs.X.BX = (UINT16) (ModeData->VbeModeNumber | VESA_BIOS_EXTENSIONS_MODE_NUMBER_LINEAR_FRAME_BUFFER);\r
2004 ZeroMem (BiosVideoPrivate->VbeCrtcInformationBlock, sizeof (VESA_BIOS_EXTENSIONS_CRTC_INFORMATION_BLOCK));\r
2005 Regs.X.ES = EFI_SEGMENT ((UINTN) BiosVideoPrivate->VbeCrtcInformationBlock);\r
2006 Regs.X.DI = EFI_OFFSET ((UINTN) BiosVideoPrivate->VbeCrtcInformationBlock);\r
2007 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
2008\r
2009 //\r
2010 // Check to see if the call succeeded\r
2011 //\r
2012 if (Regs.X.AX != VESA_BIOS_EXTENSIONS_STATUS_SUCCESS) {\r
2013 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
2014 EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
2015 EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_EC_OUTPUT_ERROR,\r
2016 DevicePath\r
2017 );\r
2018 return EFI_DEVICE_ERROR;\r
2019 }\r
2020 //\r
2021 // Initialize the state of the VbeFrameBuffer\r
2022 //\r
2023 Status = BiosVideoPrivate->PciIo->Mem.Read (\r
2024 BiosVideoPrivate->PciIo,\r
2025 EfiPciIoWidthUint32,\r
2026 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2027 (UINT64) (UINTN) ModeData->LinearFrameBuffer,\r
2028 (ModeData->BytesPerScanLine * ModeData->VerticalResolution) >> 2,\r
2029 BiosVideoPrivate->VbeFrameBuffer\r
2030 );\r
2031 if (EFI_ERROR (Status)) {\r
2032 return Status;\r
2033 }\r
2034 }\r
2035\r
2036 return EFI_SUCCESS;\r
2037}\r
2038\r
2039/**\r
2040 Graphics Output protocol interface to set video mode.\r
2041\r
2042 @param This Protocol instance pointer.\r
2043 @param ModeNumber The mode number to be set.\r
2044\r
2045 @retval EFI_SUCCESS Graphics mode was changed.\r
2046 @retval EFI_DEVICE_ERROR The device had an error and could not complete the\r
2047 request.\r
2048 @retval EFI_UNSUPPORTED ModeNumber is not supported by this device.\r
2049\r
2050**/\r
2051EFI_STATUS\r
2052EFIAPI\r
2053BiosVideoGraphicsOutputSetMode (\r
2054 IN EFI_GRAPHICS_OUTPUT_PROTOCOL * This,\r
2055 IN UINT32 ModeNumber\r
2056 )\r
2057{\r
2058 EFI_STATUS Status;\r
2059 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
2060 BIOS_VIDEO_MODE_DATA *ModeData;\r
2061 EFI_GRAPHICS_OUTPUT_BLT_PIXEL Background;\r
2062\r
2063 if (This == NULL) {\r
2064 return EFI_INVALID_PARAMETER;\r
2065 }\r
2066\r
2067 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS (This);\r
2068\r
2069 ModeData = &BiosVideoPrivate->ModeData[ModeNumber];\r
2070\r
2071 if (ModeNumber >= This->Mode->MaxMode) {\r
2072 return EFI_UNSUPPORTED;\r
2073 }\r
2074 \r
2075 if (ModeNumber == This->Mode->Mode) {\r
2076 //\r
2077 // Clear screen to black\r
2078 // \r
2079 ZeroMem (&Background, sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));\r
2080 BiosVideoGraphicsOutputVbeBlt (\r
2081 This,\r
2082 &Background,\r
2083 EfiBltVideoFill,\r
2084 0,\r
2085 0,\r
2086 0,\r
2087 0,\r
2088 ModeData->HorizontalResolution,\r
2089 ModeData->VerticalResolution,\r
2090 0\r
2091 );\r
2092 return EFI_SUCCESS;\r
2093 }\r
2094\r
2095 Status = BiosVideoSetModeWorker (BiosVideoPrivate, ModeData, BiosVideoPrivate->GopDevicePath);\r
2096 if (EFI_ERROR (Status)) {\r
2097 return Status;\r
2098 }\r
2099\r
2100 This->Mode->Mode = ModeNumber;\r
2101 This->Mode->Info->Version = 0;\r
2102 This->Mode->Info->HorizontalResolution = ModeData->HorizontalResolution;\r
2103 This->Mode->Info->VerticalResolution = ModeData->VerticalResolution;\r
2104 This->Mode->Info->PixelFormat = ModeData->PixelFormat;\r
2105 CopyMem (&(This->Mode->Info->PixelInformation), &(ModeData->PixelBitMask), sizeof (ModeData->PixelBitMask));\r
2106 This->Mode->Info->PixelsPerScanLine = (ModeData->BytesPerScanLine * 8) / ModeData->BitsPerPixel;\r
2107 This->Mode->SizeOfInfo = sizeof(EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);\r
bcecde14 2108 This->Mode->FrameBufferSize = ModeData->FrameBufferSize;\r
554e88d2 2109 This->Mode->FrameBufferBase = (EFI_PHYSICAL_ADDRESS) (UINTN) ModeData->LinearFrameBuffer;\r
bcecde14 2110\r
2111 BiosVideoPrivate->HardwareNeedsStarting = FALSE;\r
2112\r
2113 return EFI_SUCCESS;\r
2114}\r
2115\r
2116/**\r
2117 Update physical frame buffer, copy 4 bytes block, then copy remaining bytes.\r
2118\r
2119 @param PciIo The pointer of EFI_PCI_IO_PROTOCOL\r
2120 @param VbeBuffer The data to transfer to screen\r
2121 @param MemAddress Physical frame buffer base address\r
2122 @param DestinationX The X coordinate of the destination for BltOperation\r
2123 @param DestinationY The Y coordinate of the destination for BltOperation\r
2124 @param TotalBytes The total bytes of copy\r
2125 @param VbePixelWidth Bytes per pixel\r
2126 @param BytesPerScanLine Bytes per scan line\r
2127\r
2128**/\r
2129VOID\r
2130CopyVideoBuffer (\r
2131 IN EFI_PCI_IO_PROTOCOL *PciIo,\r
2132 IN UINT8 *VbeBuffer,\r
2133 IN VOID *MemAddress,\r
2134 IN UINTN DestinationX,\r
2135 IN UINTN DestinationY,\r
2136 IN UINTN TotalBytes,\r
2137 IN UINT32 VbePixelWidth,\r
2138 IN UINTN BytesPerScanLine\r
2139 )\r
2140{\r
2141 UINTN FrameBufferAddr;\r
2142 UINTN CopyBlockNum;\r
2143 UINTN RemainingBytes;\r
2144 UINTN UnalignedBytes;\r
2145 EFI_STATUS Status;\r
2146\r
2147 FrameBufferAddr = (UINTN) MemAddress + (DestinationY * BytesPerScanLine) + DestinationX * VbePixelWidth;\r
2148\r
2149 //\r
2150 // If TotalBytes is less than 4 bytes, only start byte copy.\r
2151 //\r
2152 if (TotalBytes < 4) {\r
2153 Status = PciIo->Mem.Write (\r
2154 PciIo,\r
2155 EfiPciIoWidthUint8,\r
2156 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2157 (UINT64) FrameBufferAddr,\r
2158 TotalBytes,\r
2159 VbeBuffer\r
2160 );\r
2161 ASSERT_EFI_ERROR (Status);\r
2162 return;\r
2163 }\r
2164\r
2165 //\r
2166 // If VbeBuffer is not 4-byte aligned, start byte copy.\r
2167 //\r
2168 UnalignedBytes = (4 - ((UINTN) VbeBuffer & 0x3)) & 0x3;\r
2169\r
2170 if (UnalignedBytes != 0) {\r
2171 Status = PciIo->Mem.Write (\r
2172 PciIo,\r
2173 EfiPciIoWidthUint8,\r
2174 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2175 (UINT64) FrameBufferAddr,\r
2176 UnalignedBytes,\r
2177 VbeBuffer\r
2178 );\r
2179 ASSERT_EFI_ERROR (Status);\r
2180 FrameBufferAddr += UnalignedBytes;\r
2181 VbeBuffer += UnalignedBytes;\r
2182 }\r
2183\r
2184 //\r
2185 // Calculate 4-byte block count and remaining bytes.\r
2186 //\r
2187 CopyBlockNum = (TotalBytes - UnalignedBytes) >> 2;\r
2188 RemainingBytes = (TotalBytes - UnalignedBytes) & 3;\r
2189\r
2190 //\r
2191 // Copy 4-byte block and remaining bytes to physical frame buffer.\r
2192 //\r
2193 if (CopyBlockNum != 0) {\r
2194 Status = PciIo->Mem.Write (\r
2195 PciIo,\r
2196 EfiPciIoWidthUint32,\r
2197 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2198 (UINT64) FrameBufferAddr,\r
2199 CopyBlockNum,\r
2200 VbeBuffer\r
2201 );\r
2202 ASSERT_EFI_ERROR (Status);\r
2203 }\r
2204\r
2205 if (RemainingBytes != 0) {\r
2206 FrameBufferAddr += (CopyBlockNum << 2);\r
2207 VbeBuffer += (CopyBlockNum << 2);\r
2208 Status = PciIo->Mem.Write (\r
2209 PciIo,\r
2210 EfiPciIoWidthUint8,\r
2211 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2212 (UINT64) FrameBufferAddr,\r
2213 RemainingBytes,\r
2214 VbeBuffer\r
2215 );\r
2216 ASSERT_EFI_ERROR (Status);\r
2217 }\r
2218}\r
2219\r
2220/**\r
2221 Worker function to block transfer for VBE device.\r
2222\r
2223 @param BiosVideoPrivate Instance of BIOS_VIDEO_DEV\r
2224 @param BltBuffer The data to transfer to screen\r
2225 @param BltOperation The operation to perform\r
2226 @param SourceX The X coordinate of the source for BltOperation\r
2227 @param SourceY The Y coordinate of the source for BltOperation\r
2228 @param DestinationX The X coordinate of the destination for\r
2229 BltOperation\r
2230 @param DestinationY The Y coordinate of the destination for\r
2231 BltOperation\r
2232 @param Width The width of a rectangle in the blt rectangle in\r
2233 pixels\r
2234 @param Height The height of a rectangle in the blt rectangle in\r
2235 pixels\r
2236 @param Delta Not used for EfiBltVideoFill and\r
2237 EfiBltVideoToVideo operation. If a Delta of 0 is\r
2238 used, the entire BltBuffer will be operated on. If\r
2239 a subrectangle of the BltBuffer is used, then\r
2240 Delta represents the number of bytes in a row of\r
2241 the BltBuffer.\r
2242 @param Mode Mode data.\r
2243\r
2244 @retval EFI_INVALID_PARAMETER Invalid parameter passed in\r
2245 @retval EFI_SUCCESS Blt operation success\r
2246\r
2247**/\r
2248EFI_STATUS\r
2249BiosVideoVbeBltWorker (\r
2250 IN BIOS_VIDEO_DEV *BiosVideoPrivate,\r
2251 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL\r
2252 IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,\r
2253 IN UINTN SourceX,\r
2254 IN UINTN SourceY,\r
2255 IN UINTN DestinationX,\r
2256 IN UINTN DestinationY,\r
2257 IN UINTN Width,\r
2258 IN UINTN Height,\r
2259 IN UINTN Delta,\r
2260 IN BIOS_VIDEO_MODE_DATA *Mode\r
2261 )\r
2262{\r
2263 EFI_PCI_IO_PROTOCOL *PciIo;\r
2264 EFI_TPL OriginalTPL;\r
2265 UINTN DstY;\r
2266 UINTN SrcY;\r
2267 UINTN DstX;\r
2268 EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;\r
2269 VOID *MemAddress;\r
2270 EFI_GRAPHICS_OUTPUT_BLT_PIXEL *VbeFrameBuffer;\r
2271 UINTN BytesPerScanLine;\r
2272 UINTN Index;\r
2273 UINT8 *VbeBuffer;\r
2274 UINT8 *VbeBuffer1;\r
2275 UINT8 *BltUint8;\r
2276 UINT32 VbePixelWidth;\r
2277 UINT32 Pixel;\r
2278 UINTN TotalBytes;\r
2279\r
2280 PciIo = BiosVideoPrivate->PciIo;\r
2281\r
2282 VbeFrameBuffer = BiosVideoPrivate->VbeFrameBuffer;\r
2283 MemAddress = Mode->LinearFrameBuffer;\r
2284 BytesPerScanLine = Mode->BytesPerScanLine;\r
2285 VbePixelWidth = Mode->BitsPerPixel / 8;\r
2286 BltUint8 = (UINT8 *) BltBuffer;\r
2287 TotalBytes = Width * VbePixelWidth;\r
2288\r
2289 if (((UINTN) BltOperation) >= EfiGraphicsOutputBltOperationMax) {\r
2290 return EFI_INVALID_PARAMETER;\r
2291 }\r
2292\r
2293 if (Width == 0 || Height == 0) {\r
2294 return EFI_INVALID_PARAMETER;\r
2295 }\r
2296 //\r
2297 // We need to fill the Virtual Screen buffer with the blt data.\r
2298 // The virtual screen is upside down, as the first row is the bootom row of\r
2299 // the image.\r
2300 //\r
2301 if (BltOperation == EfiBltVideoToBltBuffer) {\r
2302 //\r
2303 // Video to BltBuffer: Source is Video, destination is BltBuffer\r
2304 //\r
2305 if (SourceY + Height > Mode->VerticalResolution) {\r
2306 return EFI_INVALID_PARAMETER;\r
2307 }\r
2308\r
2309 if (SourceX + Width > Mode->HorizontalResolution) {\r
2310 return EFI_INVALID_PARAMETER;\r
2311 }\r
2312 } else {\r
2313 //\r
2314 // BltBuffer to Video: Source is BltBuffer, destination is Video\r
2315 //\r
2316 if (DestinationY + Height > Mode->VerticalResolution) {\r
2317 return EFI_INVALID_PARAMETER;\r
2318 }\r
2319\r
2320 if (DestinationX + Width > Mode->HorizontalResolution) {\r
2321 return EFI_INVALID_PARAMETER;\r
2322 }\r
2323 }\r
2324 //\r
2325 // If Delta is zero, then the entire BltBuffer is being used, so Delta\r
2326 // is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,\r
2327 // the number of bytes in each row can be computed.\r
2328 //\r
2329 if (Delta == 0) {\r
2330 Delta = Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);\r
2331 }\r
2332 //\r
2333 // We have to raise to TPL Notify, so we make an atomic write the frame buffer.\r
2334 // We would not want a timer based event (Cursor, ...) to come in while we are\r
2335 // doing this operation.\r
2336 //\r
2337 OriginalTPL = gBS->RaiseTPL (TPL_NOTIFY);\r
2338\r
2339 switch (BltOperation) {\r
2340 case EfiBltVideoToBltBuffer:\r
2341 for (SrcY = SourceY, DstY = DestinationY; DstY < (Height + DestinationY); SrcY++, DstY++) {\r
2342 Blt = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) (BltUint8 + DstY * Delta + DestinationX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));\r
2343 //\r
2344 // Shuffle the packed bytes in the hardware buffer to match EFI_GRAPHICS_OUTPUT_BLT_PIXEL\r
2345 //\r
2346 VbeBuffer = ((UINT8 *) VbeFrameBuffer + (SrcY * BytesPerScanLine + SourceX * VbePixelWidth));\r
2347 for (DstX = DestinationX; DstX < (Width + DestinationX); DstX++) {\r
2348 Pixel = VbeBuffer[0] | VbeBuffer[1] << 8 | VbeBuffer[2] << 16 | VbeBuffer[3] << 24;\r
2349 Blt->Red = (UINT8) ((Pixel >> Mode->Red.Position) & Mode->Red.Mask);\r
2350 Blt->Blue = (UINT8) ((Pixel >> Mode->Blue.Position) & Mode->Blue.Mask);\r
2351 Blt->Green = (UINT8) ((Pixel >> Mode->Green.Position) & Mode->Green.Mask);\r
2352 Blt->Reserved = 0;\r
2353 Blt++;\r
2354 VbeBuffer += VbePixelWidth;\r
2355 }\r
2356\r
2357 }\r
2358 break;\r
2359\r
2360 case EfiBltVideoToVideo:\r
2361 for (Index = 0; Index < Height; Index++) {\r
2362 if (DestinationY <= SourceY) {\r
2363 SrcY = SourceY + Index;\r
2364 DstY = DestinationY + Index;\r
2365 } else {\r
2366 SrcY = SourceY + Height - Index - 1;\r
2367 DstY = DestinationY + Height - Index - 1;\r
2368 }\r
2369\r
2370 VbeBuffer = ((UINT8 *) VbeFrameBuffer + DstY * BytesPerScanLine + DestinationX * VbePixelWidth);\r
2371 VbeBuffer1 = ((UINT8 *) VbeFrameBuffer + SrcY * BytesPerScanLine + SourceX * VbePixelWidth);\r
2372\r
2373 gBS->CopyMem (\r
2374 VbeBuffer,\r
2375 VbeBuffer1,\r
2376 TotalBytes\r
2377 );\r
2378\r
2379 //\r
2380 // Update physical frame buffer.\r
2381 //\r
2382 CopyVideoBuffer (\r
2383 PciIo,\r
2384 VbeBuffer,\r
2385 MemAddress,\r
2386 DestinationX,\r
2387 DstY,\r
2388 TotalBytes,\r
2389 VbePixelWidth,\r
2390 BytesPerScanLine\r
2391 );\r
2392 }\r
2393 break;\r
2394\r
2395 case EfiBltVideoFill:\r
2396 VbeBuffer = (UINT8 *) ((UINTN) VbeFrameBuffer + (DestinationY * BytesPerScanLine) + DestinationX * VbePixelWidth);\r
2397 Blt = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) BltUint8;\r
2398 //\r
2399 // Shuffle the RGB fields in EFI_GRAPHICS_OUTPUT_BLT_PIXEL to match the hardware buffer\r
2400 //\r
2401 Pixel = ((Blt->Red & Mode->Red.Mask) << Mode->Red.Position) |\r
2402 (\r
2403 (Blt->Green & Mode->Green.Mask) <<\r
2404 Mode->Green.Position\r
2405 ) |\r
2406 ((Blt->Blue & Mode->Blue.Mask) << Mode->Blue.Position);\r
2407\r
2408 for (Index = 0; Index < Width; Index++) {\r
2409 gBS->CopyMem (\r
2410 VbeBuffer,\r
2411 &Pixel,\r
2412 VbePixelWidth\r
2413 );\r
2414 VbeBuffer += VbePixelWidth;\r
2415 }\r
2416\r
2417 VbeBuffer = (UINT8 *) ((UINTN) VbeFrameBuffer + (DestinationY * BytesPerScanLine) + DestinationX * VbePixelWidth);\r
2418 for (DstY = DestinationY + 1; DstY < (Height + DestinationY); DstY++) {\r
2419 gBS->CopyMem (\r
2420 (VOID *) ((UINTN) VbeFrameBuffer + (DstY * BytesPerScanLine) + DestinationX * VbePixelWidth),\r
2421 VbeBuffer,\r
2422 TotalBytes\r
2423 );\r
2424 }\r
2425\r
2426 for (DstY = DestinationY; DstY < (Height + DestinationY); DstY++) {\r
2427 //\r
2428 // Update physical frame buffer.\r
2429 //\r
2430 CopyVideoBuffer (\r
2431 PciIo,\r
2432 VbeBuffer,\r
2433 MemAddress,\r
2434 DestinationX,\r
2435 DstY,\r
2436 TotalBytes,\r
2437 VbePixelWidth,\r
2438 BytesPerScanLine\r
2439 );\r
2440 }\r
2441 break;\r
2442\r
2443 case EfiBltBufferToVideo:\r
2444 for (SrcY = SourceY, DstY = DestinationY; SrcY < (Height + SourceY); SrcY++, DstY++) {\r
2445 Blt = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) (BltUint8 + (SrcY * Delta) + (SourceX) * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));\r
2446 VbeBuffer = ((UINT8 *) VbeFrameBuffer + (DstY * BytesPerScanLine + DestinationX * VbePixelWidth));\r
2447 for (DstX = DestinationX; DstX < (Width + DestinationX); DstX++) {\r
2448 //\r
2449 // Shuffle the RGB fields in EFI_GRAPHICS_OUTPUT_BLT_PIXEL to match the hardware buffer\r
2450 //\r
2451 Pixel = ((Blt->Red & Mode->Red.Mask) << Mode->Red.Position) |\r
2452 ((Blt->Green & Mode->Green.Mask) << Mode->Green.Position) |\r
2453 ((Blt->Blue & Mode->Blue.Mask) << Mode->Blue.Position);\r
2454 gBS->CopyMem (\r
2455 VbeBuffer,\r
2456 &Pixel,\r
2457 VbePixelWidth\r
2458 );\r
2459 Blt++;\r
2460 VbeBuffer += VbePixelWidth;\r
2461 }\r
2462\r
2463 VbeBuffer = ((UINT8 *) VbeFrameBuffer + (DstY * BytesPerScanLine + DestinationX * VbePixelWidth));\r
2464\r
2465 //\r
2466 // Update physical frame buffer.\r
2467 //\r
2468 CopyVideoBuffer (\r
2469 PciIo,\r
2470 VbeBuffer,\r
2471 MemAddress,\r
2472 DestinationX,\r
2473 DstY,\r
2474 TotalBytes,\r
2475 VbePixelWidth,\r
2476 BytesPerScanLine\r
2477 );\r
2478 }\r
2479 break;\r
2480\r
2481 default: ;\r
2482 }\r
2483\r
2484 gBS->RestoreTPL (OriginalTPL);\r
2485\r
2486 return EFI_SUCCESS;\r
2487}\r
2488\r
2489/**\r
2490 Graphics Output protocol instance to block transfer for VBE device.\r
2491\r
2492 @param This Pointer to Graphics Output protocol instance\r
2493 @param BltBuffer The data to transfer to screen\r
2494 @param BltOperation The operation to perform\r
2495 @param SourceX The X coordinate of the source for BltOperation\r
2496 @param SourceY The Y coordinate of the source for BltOperation\r
2497 @param DestinationX The X coordinate of the destination for\r
2498 BltOperation\r
2499 @param DestinationY The Y coordinate of the destination for\r
2500 BltOperation\r
2501 @param Width The width of a rectangle in the blt rectangle in\r
2502 pixels\r
2503 @param Height The height of a rectangle in the blt rectangle in\r
2504 pixels\r
2505 @param Delta Not used for EfiBltVideoFill and\r
2506 EfiBltVideoToVideo operation. If a Delta of 0 is\r
2507 used, the entire BltBuffer will be operated on. If\r
2508 a subrectangle of the BltBuffer is used, then\r
2509 Delta represents the number of bytes in a row of\r
2510 the BltBuffer.\r
2511\r
2512 @retval EFI_INVALID_PARAMETER Invalid parameter passed in\r
2513 @retval EFI_SUCCESS Blt operation success\r
2514\r
2515**/\r
2516EFI_STATUS\r
2517EFIAPI\r
2518BiosVideoGraphicsOutputVbeBlt (\r
2519 IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,\r
2520 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL\r
2521 IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,\r
2522 IN UINTN SourceX,\r
2523 IN UINTN SourceY,\r
2524 IN UINTN DestinationX,\r
2525 IN UINTN DestinationY,\r
2526 IN UINTN Width,\r
2527 IN UINTN Height,\r
2528 IN UINTN Delta\r
2529 )\r
2530{\r
2531 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
2532 BIOS_VIDEO_MODE_DATA *Mode;\r
2533\r
2534 if (This == NULL) {\r
2535 return EFI_INVALID_PARAMETER;\r
2536 }\r
2537\r
2538 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS (This);\r
2539 Mode = &BiosVideoPrivate->ModeData[This->Mode->Mode];\r
2540\r
2541 return BiosVideoVbeBltWorker (\r
2542 BiosVideoPrivate,\r
2543 BltBuffer,\r
2544 BltOperation,\r
2545 SourceX,\r
2546 SourceY,\r
2547 DestinationX,\r
2548 DestinationY,\r
2549 Width,\r
2550 Height,\r
2551 Delta,\r
2552 Mode\r
2553 );\r
2554}\r
2555\r
2556/**\r
2557 Write graphics controller registers.\r
2558\r
2559 @param PciIo Pointer to PciIo protocol instance of the\r
2560 controller\r
2561 @param Address Register address\r
2562 @param Data Data to be written to register\r
2563\r
2564 @return None\r
2565\r
2566**/\r
2567VOID\r
2568WriteGraphicsController (\r
2569 IN EFI_PCI_IO_PROTOCOL *PciIo,\r
2570 IN UINTN Address,\r
2571 IN UINTN Data\r
2572 )\r
2573{\r
2574 Address = Address | (Data << 8);\r
2575 PciIo->Io.Write (\r
2576 PciIo,\r
2577 EfiPciIoWidthUint16,\r
2578 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2579 VGA_GRAPHICS_CONTROLLER_ADDRESS_REGISTER,\r
2580 1,\r
2581 &Address\r
2582 );\r
2583}\r
2584\r
2585\r
2586/**\r
2587 Read the four bit plane of VGA frame buffer.\r
2588\r
2589 @param PciIo Pointer to PciIo protocol instance of the\r
2590 controller\r
2591 @param HardwareBuffer Hardware VGA frame buffer address\r
2592 @param MemoryBuffer Memory buffer address\r
2593 @param WidthInBytes Number of bytes in a line to read\r
2594 @param Height Height of the area to read\r
2595\r
2596 @return None\r
2597\r
2598**/\r
2599VOID\r
2600VgaReadBitPlanes (\r
2601 EFI_PCI_IO_PROTOCOL *PciIo,\r
2602 UINT8 *HardwareBuffer,\r
2603 UINT8 *MemoryBuffer,\r
2604 UINTN WidthInBytes,\r
2605 UINTN Height\r
2606 )\r
2607{\r
2608 UINTN BitPlane;\r
2609 UINTN Rows;\r
2610 UINTN FrameBufferOffset;\r
2611 UINT8 *Source;\r
2612 UINT8 *Destination;\r
2613\r
2614 //\r
2615 // Program the Mode Register Write mode 0, Read mode 0\r
2616 //\r
2617 WriteGraphicsController (\r
2618 PciIo,\r
2619 VGA_GRAPHICS_CONTROLLER_MODE_REGISTER,\r
2620 VGA_GRAPHICS_CONTROLLER_READ_MODE_0 | VGA_GRAPHICS_CONTROLLER_WRITE_MODE_0\r
2621 );\r
2622\r
2623 for (BitPlane = 0, FrameBufferOffset = 0;\r
2624 BitPlane < VGA_NUMBER_OF_BIT_PLANES;\r
2625 BitPlane++, FrameBufferOffset += VGA_BYTES_PER_BIT_PLANE\r
2626 ) {\r
2627 //\r
2628 // Program the Read Map Select Register to select the correct bit plane\r
2629 //\r
2630 WriteGraphicsController (\r
2631 PciIo,\r
2632 VGA_GRAPHICS_CONTROLLER_READ_MAP_SELECT_REGISTER,\r
2633 BitPlane\r
2634 );\r
2635\r
2636 Source = HardwareBuffer;\r
2637 Destination = MemoryBuffer + FrameBufferOffset;\r
2638\r
2639 for (Rows = 0; Rows < Height; Rows++, Source += VGA_BYTES_PER_SCAN_LINE, Destination += VGA_BYTES_PER_SCAN_LINE) {\r
2640 PciIo->Mem.Read (\r
2641 PciIo,\r
2642 EfiPciIoWidthUint8,\r
2643 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2644 (UINT64) (UINTN) Source,\r
2645 WidthInBytes,\r
2646 (VOID *) Destination\r
2647 );\r
2648 }\r
2649 }\r
2650}\r
2651\r
2652\r
2653/**\r
2654 Internal routine to convert VGA color to Grahpics Output color.\r
2655\r
2656 @param MemoryBuffer Buffer containing VGA color\r
2657 @param CoordinateX The X coordinate of pixel on screen\r
2658 @param CoordinateY The Y coordinate of pixel on screen\r
2659 @param BltBuffer Buffer to contain converted Grahpics Output color\r
2660\r
2661 @return None\r
2662\r
2663**/\r
2664VOID\r
2665VgaConvertToGraphicsOutputColor (\r
2666 UINT8 *MemoryBuffer,\r
2667 UINTN CoordinateX,\r
2668 UINTN CoordinateY,\r
2669 EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer\r
2670 )\r
2671{\r
2672 UINTN Mask;\r
2673 UINTN Bit;\r
2674 UINTN Color;\r
2675\r
2676 MemoryBuffer += ((CoordinateY << 6) + (CoordinateY << 4) + (CoordinateX >> 3));\r
2677 Mask = mVgaBitMaskTable[CoordinateX & 0x07];\r
2678 for (Bit = 0x01, Color = 0; Bit < 0x10; Bit <<= 1, MemoryBuffer += VGA_BYTES_PER_BIT_PLANE) {\r
2679 if ((*MemoryBuffer & Mask) != 0) {\r
2680 Color |= Bit;\r
2681 }\r
2682 }\r
2683\r
2684 *BltBuffer = mVgaColorToGraphicsOutputColor[Color];\r
2685}\r
2686\r
2687/**\r
2688 Internal routine to convert Grahpics Output color to VGA color.\r
2689\r
2690 @param BltBuffer buffer containing Grahpics Output color\r
2691\r
2692 @return Converted VGA color\r
2693\r
2694**/\r
2695UINT8\r
2696VgaConvertColor (\r
2697 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer\r
2698 )\r
2699{\r
2700 UINT8 Color;\r
2701\r
2702 Color = (UINT8) ((BltBuffer->Blue >> 7) | ((BltBuffer->Green >> 6) & 0x02) | ((BltBuffer->Red >> 5) & 0x04));\r
2703 if ((BltBuffer->Red + BltBuffer->Green + BltBuffer->Blue) > 0x180) {\r
2704 Color |= 0x08;\r
2705 }\r
2706\r
2707 return Color;\r
2708}\r
2709\r
2710\r
2711/**\r
2712 Grahpics Output protocol instance to block transfer for VGA device.\r
2713\r
2714 @param This Pointer to Grahpics Output protocol instance\r
2715 @param BltBuffer The data to transfer to screen\r
2716 @param BltOperation The operation to perform\r
2717 @param SourceX The X coordinate of the source for BltOperation\r
2718 @param SourceY The Y coordinate of the source for BltOperation\r
2719 @param DestinationX The X coordinate of the destination for\r
2720 BltOperation\r
2721 @param DestinationY The Y coordinate of the destination for\r
2722 BltOperation\r
2723 @param Width The width of a rectangle in the blt rectangle in\r
2724 pixels\r
2725 @param Height The height of a rectangle in the blt rectangle in\r
2726 pixels\r
2727 @param Delta Not used for EfiBltVideoFill and\r
2728 EfiBltVideoToVideo operation. If a Delta of 0 is\r
2729 used, the entire BltBuffer will be operated on. If\r
2730 a subrectangle of the BltBuffer is used, then\r
2731 Delta represents the number of bytes in a row of\r
2732 the BltBuffer.\r
2733\r
2734 @retval EFI_INVALID_PARAMETER Invalid parameter passed in\r
2735 @retval EFI_SUCCESS Blt operation success\r
2736\r
2737**/\r
2738EFI_STATUS\r
2739EFIAPI\r
2740BiosVideoGraphicsOutputVgaBlt (\r
2741 IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,\r
2742 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL\r
2743 IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,\r
2744 IN UINTN SourceX,\r
2745 IN UINTN SourceY,\r
2746 IN UINTN DestinationX,\r
2747 IN UINTN DestinationY,\r
2748 IN UINTN Width,\r
2749 IN UINTN Height,\r
2750 IN UINTN Delta\r
2751 )\r
2752{\r
2753 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
2754 EFI_TPL OriginalTPL;\r
2755 UINT8 *MemAddress;\r
2756 UINTN BytesPerScanLine;\r
2757 UINTN Bit;\r
2758 UINTN Index;\r
2759 UINTN Index1;\r
2760 UINTN StartAddress;\r
2761 UINTN Bytes;\r
2762 UINTN Offset;\r
2763 UINT8 LeftMask;\r
2764 UINT8 RightMask;\r
2765 UINTN Address;\r
2766 UINTN AddressFix;\r
2767 UINT8 *Address1;\r
2768 UINT8 *SourceAddress;\r
2769 UINT8 *DestinationAddress;\r
2770 EFI_PCI_IO_PROTOCOL *PciIo;\r
2771 UINT8 Data;\r
2772 UINT8 PixelColor;\r
2773 UINT8 *VgaFrameBuffer;\r
2774 UINTN SourceOffset;\r
2775 UINTN SourceWidth;\r
2776 UINTN Rows;\r
2777 UINTN Columns;\r
2778 UINTN CoordinateX;\r
2779 UINTN CoordinateY;\r
2780 UINTN CurrentMode;\r
2781\r
2782 if (This == NULL || ((UINTN) BltOperation) >= EfiGraphicsOutputBltOperationMax) {\r
2783 return EFI_INVALID_PARAMETER;\r
2784 }\r
2785\r
2786 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS (This);\r
2787\r
2788 CurrentMode = This->Mode->Mode;\r
2789 PciIo = BiosVideoPrivate->PciIo;\r
2790 MemAddress = BiosVideoPrivate->ModeData[CurrentMode].LinearFrameBuffer;\r
2791 BytesPerScanLine = BiosVideoPrivate->ModeData[CurrentMode].BytesPerScanLine >> 3;\r
2792 VgaFrameBuffer = BiosVideoPrivate->VgaFrameBuffer;\r
2793\r
2794\r
2795 if (Width == 0 || Height == 0) {\r
2796 return EFI_INVALID_PARAMETER;\r
2797 }\r
2798 //\r
2799 // We need to fill the Virtual Screen buffer with the blt data.\r
2800 // The virtual screen is upside down, as the first row is the bootom row of\r
2801 // the image.\r
2802 //\r
2803 if (BltOperation == EfiBltVideoToBltBuffer) {\r
2804 //\r
2805 // Video to BltBuffer: Source is Video, destination is BltBuffer\r
2806 //\r
2807 if (SourceY + Height > BiosVideoPrivate->ModeData[CurrentMode].VerticalResolution) {\r
2808 return EFI_INVALID_PARAMETER;\r
2809 }\r
2810\r
2811 if (SourceX + Width > BiosVideoPrivate->ModeData[CurrentMode].HorizontalResolution) {\r
2812 return EFI_INVALID_PARAMETER;\r
2813 }\r
2814 } else {\r
2815 //\r
2816 // BltBuffer to Video: Source is BltBuffer, destination is Video\r
2817 //\r
2818 if (DestinationY + Height > BiosVideoPrivate->ModeData[CurrentMode].VerticalResolution) {\r
2819 return EFI_INVALID_PARAMETER;\r
2820 }\r
2821\r
2822 if (DestinationX + Width > BiosVideoPrivate->ModeData[CurrentMode].HorizontalResolution) {\r
2823 return EFI_INVALID_PARAMETER;\r
2824 }\r
2825 }\r
2826 //\r
2827 // If Delta is zero, then the entire BltBuffer is being used, so Delta\r
2828 // is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,\r
2829 // the number of bytes in each row can be computed.\r
2830 //\r
2831 if (Delta == 0) {\r
2832 Delta = Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);\r
2833 }\r
2834 //\r
2835 // We have to raise to TPL Notify, so we make an atomic write the frame buffer.\r
2836 // We would not want a timer based event (Cursor, ...) to come in while we are\r
2837 // doing this operation.\r
2838 //\r
2839 OriginalTPL = gBS->RaiseTPL (TPL_NOTIFY);\r
2840\r
2841 //\r
2842 // Compute some values we need for VGA\r
2843 //\r
2844 switch (BltOperation) {\r
2845 case EfiBltVideoToBltBuffer:\r
2846\r
2847 SourceOffset = (SourceY << 6) + (SourceY << 4) + (SourceX >> 3);\r
2848 SourceWidth = ((SourceX + Width - 1) >> 3) - (SourceX >> 3) + 1;\r
2849\r
2850 //\r
2851 // Read all the pixels in the 4 bit planes into a memory buffer that looks like the VGA buffer\r
2852 //\r
2853 VgaReadBitPlanes (\r
2854 PciIo,\r
2855 MemAddress + SourceOffset,\r
2856 VgaFrameBuffer + SourceOffset,\r
2857 SourceWidth,\r
2858 Height\r
2859 );\r
2860\r
2861 //\r
2862 // Convert VGA Bit Planes to a Graphics Output 32-bit color value\r
2863 //\r
2864 BltBuffer += (DestinationY * (Delta >> 2) + DestinationX);\r
2865 for (Rows = 0, CoordinateY = SourceY; Rows < Height; Rows++, CoordinateY++, BltBuffer += (Delta >> 2)) {\r
2866 for (Columns = 0, CoordinateX = SourceX; Columns < Width; Columns++, CoordinateX++, BltBuffer++) {\r
2867 VgaConvertToGraphicsOutputColor (VgaFrameBuffer, CoordinateX, CoordinateY, BltBuffer);\r
2868 }\r
2869\r
2870 BltBuffer -= Width;\r
2871 }\r
2872\r
2873 break;\r
2874\r
2875 case EfiBltVideoToVideo:\r
2876 //\r
2877 // Check for an aligned Video to Video operation\r
2878 //\r
2879 if ((SourceX & 0x07) == 0x00 && (DestinationX & 0x07) == 0x00 && (Width & 0x07) == 0x00) {\r
2880 //\r
2881 // Program the Mode Register Write mode 1, Read mode 0\r
2882 //\r
2883 WriteGraphicsController (\r
2884 PciIo,\r
2885 VGA_GRAPHICS_CONTROLLER_MODE_REGISTER,\r
2886 VGA_GRAPHICS_CONTROLLER_READ_MODE_0 | VGA_GRAPHICS_CONTROLLER_WRITE_MODE_1\r
2887 );\r
2888\r
2889 SourceAddress = (UINT8 *) (MemAddress + (SourceY << 6) + (SourceY << 4) + (SourceX >> 3));\r
2890 DestinationAddress = (UINT8 *) (MemAddress + (DestinationY << 6) + (DestinationY << 4) + (DestinationX >> 3));\r
2891 Bytes = Width >> 3;\r
2892 for (Index = 0, Offset = 0; Index < Height; Index++, Offset += BytesPerScanLine) {\r
2893 PciIo->CopyMem (\r
2894 PciIo,\r
2895 EfiPciIoWidthUint8,\r
2896 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2897 (UINT64) (UINTN) (DestinationAddress + Offset),\r
2898 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2899 (UINT64) (UINTN) (SourceAddress + Offset),\r
2900 Bytes\r
2901 );\r
2902 }\r
2903 } else {\r
2904 SourceOffset = (SourceY << 6) + (SourceY << 4) + (SourceX >> 3);\r
2905 SourceWidth = ((SourceX + Width - 1) >> 3) - (SourceX >> 3) + 1;\r
2906\r
2907 //\r
2908 // Read all the pixels in the 4 bit planes into a memory buffer that looks like the VGA buffer\r
2909 //\r
2910 VgaReadBitPlanes (\r
2911 PciIo,\r
2912 MemAddress + SourceOffset,\r
2913 VgaFrameBuffer + SourceOffset,\r
2914 SourceWidth,\r
2915 Height\r
2916 );\r
2917 }\r
2918\r
2919 break;\r
2920\r
2921 case EfiBltVideoFill:\r
2922 StartAddress = (UINTN) (MemAddress + (DestinationY << 6) + (DestinationY << 4) + (DestinationX >> 3));\r
2923 Bytes = ((DestinationX + Width - 1) >> 3) - (DestinationX >> 3);\r
2924 LeftMask = mVgaLeftMaskTable[DestinationX & 0x07];\r
2925 RightMask = mVgaRightMaskTable[(DestinationX + Width - 1) & 0x07];\r
2926 if (Bytes == 0) {\r
2927 LeftMask = (UINT8) (LeftMask & RightMask);\r
2928 RightMask = 0;\r
2929 }\r
2930\r
2931 if (LeftMask == 0xff) {\r
2932 StartAddress--;\r
2933 Bytes++;\r
2934 LeftMask = 0;\r
2935 }\r
2936\r
2937 if (RightMask == 0xff) {\r
2938 Bytes++;\r
2939 RightMask = 0;\r
2940 }\r
2941\r
2942 PixelColor = VgaConvertColor (BltBuffer);\r
2943\r
2944 //\r
2945 // Program the Mode Register Write mode 2, Read mode 0\r
2946 //\r
2947 WriteGraphicsController (\r
2948 PciIo,\r
2949 VGA_GRAPHICS_CONTROLLER_MODE_REGISTER,\r
2950 VGA_GRAPHICS_CONTROLLER_READ_MODE_0 | VGA_GRAPHICS_CONTROLLER_WRITE_MODE_2\r
2951 );\r
2952\r
2953 //\r
2954 // Program the Data Rotate/Function Select Register to replace\r
2955 //\r
2956 WriteGraphicsController (\r
2957 PciIo,\r
2958 VGA_GRAPHICS_CONTROLLER_DATA_ROTATE_REGISTER,\r
2959 VGA_GRAPHICS_CONTROLLER_FUNCTION_REPLACE\r
2960 );\r
2961\r
2962 if (LeftMask != 0) {\r
2963 //\r
2964 // Program the BitMask register with the Left column mask\r
2965 //\r
2966 WriteGraphicsController (\r
2967 PciIo,\r
2968 VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER,\r
2969 LeftMask\r
2970 );\r
2971\r
2972 for (Index = 0, Address = StartAddress; Index < Height; Index++, Address += BytesPerScanLine) {\r
2973 //\r
2974 // Read data from the bit planes into the latches\r
2975 //\r
2976 PciIo->Mem.Read (\r
2977 PciIo,\r
2978 EfiPciIoWidthUint8,\r
2979 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2980 (UINT64) (UINTN) Address,\r
2981 1,\r
2982 &Data\r
2983 );\r
2984 //\r
2985 // Write the lower 4 bits of PixelColor to the bit planes in the pixels enabled by BitMask\r
2986 //\r
2987 PciIo->Mem.Write (\r
2988 PciIo,\r
2989 EfiPciIoWidthUint8,\r
2990 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2991 (UINT64) (UINTN) Address,\r
2992 1,\r
2993 &PixelColor\r
2994 );\r
2995 }\r
2996 }\r
2997\r
2998 if (Bytes > 1) {\r
2999 //\r
3000 // Program the BitMask register with the middle column mask of 0xff\r
3001 //\r
3002 WriteGraphicsController (\r
3003 PciIo,\r
3004 VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER,\r
3005 0xff\r
3006 );\r
3007\r
3008 for (Index = 0, Address = StartAddress + 1; Index < Height; Index++, Address += BytesPerScanLine) {\r
3009 PciIo->Mem.Write (\r
3010 PciIo,\r
3011 EfiPciIoWidthFillUint8,\r
3012 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3013 (UINT64) (UINTN) Address,\r
3014 Bytes - 1,\r
3015 &PixelColor\r
3016 );\r
3017 }\r
3018 }\r
3019\r
3020 if (RightMask != 0) {\r
3021 //\r
3022 // Program the BitMask register with the Right column mask\r
3023 //\r
3024 WriteGraphicsController (\r
3025 PciIo,\r
3026 VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER,\r
3027 RightMask\r
3028 );\r
3029\r
3030 for (Index = 0, Address = StartAddress + Bytes; Index < Height; Index++, Address += BytesPerScanLine) {\r
3031 //\r
3032 // Read data from the bit planes into the latches\r
3033 //\r
3034 PciIo->Mem.Read (\r
3035 PciIo,\r
3036 EfiPciIoWidthUint8,\r
3037 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3038 (UINT64) (UINTN) Address,\r
3039 1,\r
3040 &Data\r
3041 );\r
3042 //\r
3043 // Write the lower 4 bits of PixelColor to the bit planes in the pixels enabled by BitMask\r
3044 //\r
3045 PciIo->Mem.Write (\r
3046 PciIo,\r
3047 EfiPciIoWidthUint8,\r
3048 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3049 (UINT64) (UINTN) Address,\r
3050 1,\r
3051 &PixelColor\r
3052 );\r
3053 }\r
3054 }\r
3055 break;\r
3056\r
3057 case EfiBltBufferToVideo:\r
3058 StartAddress = (UINTN) (MemAddress + (DestinationY << 6) + (DestinationY << 4) + (DestinationX >> 3));\r
3059 LeftMask = mVgaBitMaskTable[DestinationX & 0x07];\r
3060\r
3061 //\r
3062 // Program the Mode Register Write mode 2, Read mode 0\r
3063 //\r
3064 WriteGraphicsController (\r
3065 PciIo,\r
3066 VGA_GRAPHICS_CONTROLLER_MODE_REGISTER,\r
3067 VGA_GRAPHICS_CONTROLLER_READ_MODE_0 | VGA_GRAPHICS_CONTROLLER_WRITE_MODE_2\r
3068 );\r
3069\r
3070 //\r
3071 // Program the Data Rotate/Function Select Register to replace\r
3072 //\r
3073 WriteGraphicsController (\r
3074 PciIo,\r
3075 VGA_GRAPHICS_CONTROLLER_DATA_ROTATE_REGISTER,\r
3076 VGA_GRAPHICS_CONTROLLER_FUNCTION_REPLACE\r
3077 );\r
3078\r
3079 for (Index = 0, Address = StartAddress; Index < Height; Index++, Address += BytesPerScanLine) {\r
3080 for (Index1 = 0; Index1 < Width; Index1++) {\r
3081 BiosVideoPrivate->LineBuffer[Index1] = VgaConvertColor (&BltBuffer[(SourceY + Index) * (Delta >> 2) + SourceX + Index1]);\r
3082 }\r
3083 AddressFix = Address;\r
3084\r
3085 for (Bit = 0; Bit < 8; Bit++) {\r
3086 //\r
3087 // Program the BitMask register with the Left column mask\r
3088 //\r
3089 WriteGraphicsController (\r
3090 PciIo,\r
3091 VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER,\r
3092 LeftMask\r
3093 );\r
3094\r
3095 for (Index1 = Bit, Address1 = (UINT8 *) AddressFix; Index1 < Width; Index1 += 8, Address1++) {\r
3096 //\r
3097 // Read data from the bit planes into the latches\r
3098 //\r
3099 PciIo->Mem.Read (\r
3100 PciIo,\r
3101 EfiPciIoWidthUint8,\r
3102 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3103 (UINT64) (UINTN) Address1,\r
3104 1,\r
3105 &Data\r
3106 );\r
3107\r
3108 PciIo->Mem.Write (\r
3109 PciIo,\r
3110 EfiPciIoWidthUint8,\r
3111 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3112 (UINT64) (UINTN) Address1,\r
3113 1,\r
3114 &BiosVideoPrivate->LineBuffer[Index1]\r
3115 );\r
3116 }\r
3117\r
3118 LeftMask = (UINT8) (LeftMask >> 1);\r
3119 if (LeftMask == 0) {\r
3120 LeftMask = 0x80;\r
3121 AddressFix++;\r
3122 }\r
3123 }\r
3124 }\r
3125\r
3126 break;\r
3127\r
3128 default: ;\r
3129 }\r
3130\r
3131 gBS->RestoreTPL (OriginalTPL);\r
3132\r
3133 return EFI_SUCCESS;\r
3134}\r
3135\r
3136//\r
3137// VGA Mini Port Protocol Functions\r
3138//\r
3139\r
3140/**\r
3141 VgaMiniPort protocol interface to set mode.\r
3142\r
3143 @param This Pointer to VgaMiniPort protocol instance\r
3144 @param ModeNumber The index of the mode\r
3145\r
3146 @retval EFI_UNSUPPORTED The requested mode is not supported\r
3147 @retval EFI_SUCCESS The requested mode is set successfully\r
3148\r
3149**/\r
3150EFI_STATUS\r
3151EFIAPI\r
3152BiosVideoVgaMiniPortSetMode (\r
3153 IN EFI_VGA_MINI_PORT_PROTOCOL *This,\r
3154 IN UINTN ModeNumber\r
3155 )\r
3156{\r
3157 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
3158 EFI_IA32_REGISTER_SET Regs;\r
3159\r
3160 if (This == NULL) {\r
3161 return EFI_INVALID_PARAMETER;\r
3162 }\r
3163\r
3164 //\r
3165 // Make sure the ModeNumber is a valid value\r
3166 //\r
3167 if (ModeNumber >= This->MaxMode) {\r
3168 return EFI_UNSUPPORTED;\r
3169 }\r
3170 //\r
3171 // Get the device structure for this device\r
3172 //\r
3173 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_VGA_MINI_PORT_THIS (This);\r
3174\r
3175 switch (ModeNumber) {\r
3176 case 0:\r
3177 //\r
3178 // Set the 80x25 Text VGA Mode\r
3179 //\r
3180 Regs.H.AH = 0x00;\r
3181 Regs.H.AL = 0x83;\r
3182 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3183\r
3184 Regs.H.AH = 0x11;\r
3185 Regs.H.AL = 0x14;\r
3186 Regs.H.BL = 0;\r
3187 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3188 break;\r
3189\r
3190 case 1:\r
3191 //\r
3192 // Set the 80x50 Text VGA Mode\r
3193 //\r
3194 Regs.H.AH = 0x00;\r
3195 Regs.H.AL = 0x83;\r
3196 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3197 Regs.H.AH = 0x11;\r
3198 Regs.H.AL = 0x12;\r
3199 Regs.H.BL = 0;\r
3200 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3201 break;\r
3202\r
3203 default:\r
3204 return EFI_UNSUPPORTED;\r
3205 }\r
3206\r
3207 return EFI_SUCCESS;\r
3208}\r
3209\r
3210/**\r
3211 Event handler for Exit Boot Service.\r
3212\r
3213 @param Event The event that be siganlled when exiting boot service.\r
3214 @param Context Pointer to instance of BIOS_VIDEO_DEV.\r
3215\r
3216**/\r
3217VOID\r
3218EFIAPI\r
3219BiosVideoNotifyExitBootServices (\r
3220 IN EFI_EVENT Event,\r
3221 IN VOID *Context\r
3222 )\r
3223{\r
3224 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
3225 EFI_IA32_REGISTER_SET Regs;\r
3226\r
3227 BiosVideoPrivate = (BIOS_VIDEO_DEV *)Context;\r
3228\r
3229 //\r
3230 // Set the 80x25 Text VGA Mode\r
3231 //\r
3232 Regs.H.AH = 0x00;\r
3233 Regs.H.AL = 0x03;\r
3234 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3235\r
3236 Regs.H.AH = 0x00;\r
3237 Regs.H.AL = 0x83;\r
3238 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3239\r
3240 Regs.H.AH = 0x11;\r
3241 Regs.H.AL = 0x04;\r
3242 Regs.H.BL = 0;\r
3243 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3244}\r
3245\r
3246/**\r
3247 The user Entry Point for module UefiBiosVideo. The user code starts with this function.\r
3248\r
3249 @param[in] ImageHandle The firmware allocated handle for the EFI image.\r
3250 @param[in] SystemTable A pointer to the EFI System Table.\r
3251\r
3252 @retval EFI_SUCCESS The entry point is executed successfully.\r
3253 @retval other Some error occurs when executing this entry point.\r
3254\r
3255**/\r
3256EFI_STATUS\r
3257EFIAPI\r
3258BiosVideoEntryPoint(\r
3259 IN EFI_HANDLE ImageHandle,\r
3260 IN EFI_SYSTEM_TABLE *SystemTable\r
3261 )\r
3262{\r
3263 EFI_STATUS Status;\r
3264\r
3265 //\r
3266 // Install driver model protocol(s).\r
3267 //\r
3268 Status = EfiLibInstallDriverBindingComponentName2 (\r
3269 ImageHandle,\r
3270 SystemTable,\r
3271 &gBiosVideoDriverBinding,\r
3272 ImageHandle,\r
3273 &gBiosVideoComponentName,\r
3274 &gBiosVideoComponentName2\r
3275 );\r
3276 ASSERT_EFI_ERROR (Status);\r
3277\r
3278 //\r
3279 // Install Legacy BIOS GUID to mark this driver as a BIOS Thunk Driver\r
3280 //\r
3281 return gBS->InstallMultipleProtocolInterfaces (\r
3282 &ImageHandle,\r
3283 &gEfiLegacyBiosGuid,\r
3284 NULL,\r
3285 NULL\r
3286 );\r
3287}\r
3288\r
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