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EmulatorPkg: CpuRuntimeDxe: remove set but unused variables
[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
1a45b15e 4Copyright (c) 2007 - 2014, 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
1a45b15e 318 Supports &= (UINT64)(EFI_PCI_IO_ATTRIBUTE_VGA_IO | EFI_PCI_IO_ATTRIBUTE_VGA_IO_16);\r
bcecde14 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
16875591 1593 //\r
1594 // When EDID comes from INT10 call, EDID does not include 800x600, 640x480 and 1024x768,\r
1595 // but INT10 can support these modes, we add them into GOP mode.\r
1596 //\r
1597 if ((BiosVideoPrivate->EdidDiscovered.SizeOfEdid != 0) &&\r
1598 !((Timing.HorizontalResolution) == 1024 && (Timing.VerticalResolution == 768)) &&\r
1599 !((Timing.HorizontalResolution) == 800 && (Timing.VerticalResolution == 600)) &&\r
1600 !((Timing.HorizontalResolution) == 640 && (Timing.VerticalResolution == 480))) {\r
bcecde14 1601 continue;\r
16875591 1602 }\r
bcecde14 1603 }\r
1604 }\r
1605\r
1606 //\r
1607 // Select a reasonable mode to be set for current display mode\r
1608 //\r
1609 ModeFound = FALSE;\r
1610\r
1611 if (BiosVideoPrivate->VbeModeInformationBlock->XResolution == 1024 &&\r
1612 BiosVideoPrivate->VbeModeInformationBlock->YResolution == 768\r
1613 ) {\r
1614 ModeFound = TRUE;\r
1615 }\r
1616 if (BiosVideoPrivate->VbeModeInformationBlock->XResolution == 800 &&\r
1617 BiosVideoPrivate->VbeModeInformationBlock->YResolution == 600\r
1618 ) {\r
1619 ModeFound = TRUE;\r
1620 PreferMode = ModeNumber;\r
1621 }\r
1622 if (BiosVideoPrivate->VbeModeInformationBlock->XResolution == 640 &&\r
1623 BiosVideoPrivate->VbeModeInformationBlock->YResolution == 480\r
1624 ) {\r
1625 ModeFound = TRUE;\r
1626 }\r
1627\r
1628 if ((!EdidFound) && (!ModeFound)) {\r
1629 //\r
1630 // When no EDID exist, only select three possible resolutions, i.e. 1024x768, 800x600, 640x480\r
1631 //\r
1632 continue;\r
1633 }\r
1634\r
675253b4 1635 //\r
1636 // Record the highest resolution mode to set later\r
1637 //\r
7f7dba5c 1638 if ((BiosVideoPrivate->VbeModeInformationBlock->XResolution > HighestHorizontalResolution) ||\r
1639 ((BiosVideoPrivate->VbeModeInformationBlock->XResolution == HighestHorizontalResolution) && \r
1640 (BiosVideoPrivate->VbeModeInformationBlock->YResolution > HighestVerticalResolution))) {\r
675253b4 1641 HighestHorizontalResolution = BiosVideoPrivate->VbeModeInformationBlock->XResolution;\r
1642 HighestVerticalResolution = BiosVideoPrivate->VbeModeInformationBlock->YResolution;\r
1643 HighestResolutionMode = ModeNumber;\r
1644 }\r
1645\r
bcecde14 1646 //\r
1647 // Add mode to the list of available modes\r
1648 //\r
1649 ModeNumber ++;\r
1650 ModeBuffer = (BIOS_VIDEO_MODE_DATA *) AllocatePool (\r
1651 ModeNumber * sizeof (BIOS_VIDEO_MODE_DATA)\r
1652 );\r
1653 if (NULL == ModeBuffer) {\r
1654 Status = EFI_OUT_OF_RESOURCES;\r
1655 goto Done;\r
1656 }\r
1657\r
1658 if (ModeNumber > 1) {\r
1659 CopyMem (\r
1660 ModeBuffer,\r
1661 BiosVideoPrivate->ModeData,\r
1662 (ModeNumber - 1) * sizeof (BIOS_VIDEO_MODE_DATA)\r
1663 );\r
1664 }\r
1665\r
1666 if (BiosVideoPrivate->ModeData != NULL) {\r
1667 FreePool (BiosVideoPrivate->ModeData);\r
1668 }\r
1669\r
1670 CurrentModeData = &ModeBuffer[ModeNumber - 1];\r
e6fa7890 1671 CurrentModeData->VbeModeNumber = VbeModeNumber;\r
bcecde14 1672 if (BiosVideoPrivate->VbeInformationBlock->VESAVersion >= VESA_BIOS_EXTENSIONS_VERSION_3_0) {\r
1673 CurrentModeData->BytesPerScanLine = BiosVideoPrivate->VbeModeInformationBlock->LinBytesPerScanLine;\r
1674 CurrentModeData->Red.Position = BiosVideoPrivate->VbeModeInformationBlock->LinRedFieldPosition;\r
1675 CurrentModeData->Red.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->LinRedMaskSize) - 1);\r
1676 CurrentModeData->Blue.Position = BiosVideoPrivate->VbeModeInformationBlock->LinBlueFieldPosition;\r
1677 CurrentModeData->Blue.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->LinBlueMaskSize) - 1);\r
1678 CurrentModeData->Green.Position = BiosVideoPrivate->VbeModeInformationBlock->LinGreenFieldPosition;\r
1679 CurrentModeData->Green.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->LinGreenMaskSize) - 1);\r
1680 CurrentModeData->Reserved.Position = BiosVideoPrivate->VbeModeInformationBlock->LinRsvdFieldPosition;\r
1681 CurrentModeData->Reserved.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->LinRsvdMaskSize) - 1);\r
1682 } else {\r
1683 CurrentModeData->BytesPerScanLine = BiosVideoPrivate->VbeModeInformationBlock->BytesPerScanLine;\r
1684 CurrentModeData->Red.Position = BiosVideoPrivate->VbeModeInformationBlock->RedFieldPosition;\r
1685 CurrentModeData->Red.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->RedMaskSize) - 1);\r
1686 CurrentModeData->Blue.Position = BiosVideoPrivate->VbeModeInformationBlock->BlueFieldPosition;\r
1687 CurrentModeData->Blue.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->BlueMaskSize) - 1);\r
1688 CurrentModeData->Green.Position = BiosVideoPrivate->VbeModeInformationBlock->GreenFieldPosition;\r
1689 CurrentModeData->Green.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->GreenMaskSize) - 1);\r
1690 CurrentModeData->Reserved.Position = BiosVideoPrivate->VbeModeInformationBlock->RsvdFieldPosition;\r
1691 CurrentModeData->Reserved.Mask = (UINT8) ((1 << BiosVideoPrivate->VbeModeInformationBlock->RsvdMaskSize) - 1);\r
1692 }\r
1693\r
1694 CurrentModeData->PixelFormat = PixelBitMask;\r
1695 if ((BiosVideoPrivate->VbeModeInformationBlock->BitsPerPixel == 32) &&\r
1696 (CurrentModeData->Red.Mask == 0xff) && (CurrentModeData->Green.Mask == 0xff) && (CurrentModeData->Blue.Mask == 0xff)) {\r
1697 if ((CurrentModeData->Red.Position == 0) && (CurrentModeData->Green.Position == 8) && (CurrentModeData->Blue.Position == 16)) {\r
1698 CurrentModeData->PixelFormat = PixelRedGreenBlueReserved8BitPerColor;\r
1699 } else if ((CurrentModeData->Blue.Position == 0) && (CurrentModeData->Green.Position == 8) && (CurrentModeData->Red.Position == 16)) {\r
1700 CurrentModeData->PixelFormat = PixelBlueGreenRedReserved8BitPerColor;\r
1701 }\r
1702 }\r
1703\r
1704 CurrentModeData->PixelBitMask.RedMask = ((UINT32) CurrentModeData->Red.Mask) << CurrentModeData->Red.Position;\r
1705 CurrentModeData->PixelBitMask.GreenMask = ((UINT32) CurrentModeData->Green.Mask) << CurrentModeData->Green.Position;\r
1706 CurrentModeData->PixelBitMask.BlueMask = ((UINT32) CurrentModeData->Blue.Mask) << CurrentModeData->Blue.Position;\r
1707 CurrentModeData->PixelBitMask.ReservedMask = ((UINT32) CurrentModeData->Reserved.Mask) << CurrentModeData->Reserved.Position;\r
bcecde14 1708\r
1709 CurrentModeData->LinearFrameBuffer = (VOID *) (UINTN)BiosVideoPrivate->VbeModeInformationBlock->PhysBasePtr;\r
1710 CurrentModeData->HorizontalResolution = BiosVideoPrivate->VbeModeInformationBlock->XResolution;\r
1711 CurrentModeData->VerticalResolution = BiosVideoPrivate->VbeModeInformationBlock->YResolution;\r
1712\r
1713 CurrentModeData->BitsPerPixel = BiosVideoPrivate->VbeModeInformationBlock->BitsPerPixel;\r
554e88d2 1714 CurrentModeData->FrameBufferSize = CurrentModeData->BytesPerScanLine * CurrentModeData->VerticalResolution;\r
1715 //\r
1716 // Make sure the FrameBufferSize does not exceed the max available frame buffer size reported by VEB.\r
1717 //\r
6c2f76ed 1718 ASSERT (CurrentModeData->FrameBufferSize <= (UINTN)(BiosVideoPrivate->VbeInformationBlock->TotalMemory * 64 * 1024));\r
554e88d2 1719 \r
bcecde14 1720 BiosVideoPrivate->ModeData = ModeBuffer;\r
1721 }\r
1722 //\r
1723 // Check to see if we found any modes that are compatible with GRAPHICS OUTPUT\r
1724 //\r
1725 if (ModeNumber == 0) {\r
1726 Status = EFI_DEVICE_ERROR;\r
1727 goto Done;\r
1728 }\r
1729\r
1730 //\r
1731 // Assign Gop's Blt function\r
1732 //\r
1733 BiosVideoPrivate->GraphicsOutput.Blt = BiosVideoGraphicsOutputVbeBlt;\r
1734\r
1735 BiosVideoPrivate->GraphicsOutput.Mode->MaxMode = (UINT32) ModeNumber;\r
1736 //\r
1737 // Current mode is unknow till now, set it to an invalid mode.\r
1738 //\r
1739 BiosVideoPrivate->GraphicsOutput.Mode->Mode = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER;\r
1740\r
1741 //\r
1742 // Find the best mode to initialize\r
1743 //\r
675253b4 1744 if ((PcdGet32 (PcdVideoHorizontalResolution) == 0x0) || (PcdGet32 (PcdVideoVerticalResolution) == 0x0)) {\r
1745 DEBUG_CODE (\r
1746 BIOS_VIDEO_MODE_DATA *ModeData;\r
1747 ModeData = &BiosVideoPrivate->ModeData[HighestResolutionMode];\r
1748 DEBUG ((EFI_D_INFO, "BiosVideo set highest resolution %d x %d\n",\r
1749 ModeData->HorizontalResolution, ModeData->VerticalResolution));\r
1750 );\r
1751 PreferMode = HighestResolutionMode;\r
1752 }\r
bcecde14 1753 Status = BiosVideoGraphicsOutputSetMode (&BiosVideoPrivate->GraphicsOutput, (UINT32) PreferMode);\r
1754 if (EFI_ERROR (Status)) {\r
1755 for (PreferMode = 0; PreferMode < ModeNumber; PreferMode ++) {\r
1756 Status = BiosVideoGraphicsOutputSetMode (\r
1757 &BiosVideoPrivate->GraphicsOutput,\r
1758 (UINT32) PreferMode\r
1759 );\r
1760 if (!EFI_ERROR (Status)) {\r
1761 break;\r
1762 }\r
1763 }\r
1764 if (PreferMode == ModeNumber) {\r
1765 //\r
1766 // None mode is set successfully.\r
1767 //\r
1768 goto Done;\r
1769 }\r
1770 }\r
1771\r
1772Done:\r
1773 //\r
1774 // If there was an error, then free the mode structure\r
1775 //\r
1776 if (EFI_ERROR (Status)) {\r
1777 if (BiosVideoPrivate->ModeData != NULL) {\r
1778 FreePool (BiosVideoPrivate->ModeData);\r
1779 BiosVideoPrivate->ModeData = NULL;\r
1780 BiosVideoPrivate->MaxMode = 0;\r
1781 }\r
bcecde14 1782 if (EdidOverrideDataBlock != NULL) {\r
1783 FreePool (EdidOverrideDataBlock);\r
1784 }\r
1785 }\r
1786\r
1787 return Status;\r
1788}\r
1789\r
1790\r
1791/**\r
1792 Check for VGA device.\r
1793\r
1794 @param BiosVideoPrivate Pointer to BIOS_VIDEO_DEV structure\r
1795\r
1796 @retval EFI_SUCCESS Standard VGA device found\r
1797\r
1798**/\r
1799EFI_STATUS\r
1800BiosVideoCheckForVga (\r
1801 IN OUT BIOS_VIDEO_DEV *BiosVideoPrivate\r
1802 )\r
1803{\r
1804 EFI_STATUS Status;\r
1805 BIOS_VIDEO_MODE_DATA *ModeBuffer;\r
1806\r
1807 Status = EFI_UNSUPPORTED;\r
1808\r
1809 //\r
1810 // Assign Gop's Blt function\r
1811 //\r
1812 BiosVideoPrivate->GraphicsOutput.Blt = BiosVideoGraphicsOutputVgaBlt;\r
1813\r
1814 //\r
1815 // Add mode to the list of available modes\r
1816 // caller should guarantee that Mode has been allocated.\r
1817 //\r
1818 ASSERT (BiosVideoPrivate->GraphicsOutput.Mode != NULL);\r
1819 BiosVideoPrivate->GraphicsOutput.Mode->MaxMode = 1;\r
1820\r
1821 ModeBuffer = (BIOS_VIDEO_MODE_DATA *) AllocatePool (\r
1822 sizeof (BIOS_VIDEO_MODE_DATA)\r
1823 );\r
1824 if (NULL == ModeBuffer) {\r
1825 Status = EFI_OUT_OF_RESOURCES;\r
1826 goto Done;\r
1827 }\r
1828\r
1829 ModeBuffer->VbeModeNumber = 0x0012;\r
1830 ModeBuffer->BytesPerScanLine = 640;\r
1831 ModeBuffer->LinearFrameBuffer = (VOID *) (UINTN) (0xa0000);\r
1832 ModeBuffer->HorizontalResolution = 640;\r
1833 ModeBuffer->VerticalResolution = 480;\r
1834 ModeBuffer->PixelFormat = PixelBltOnly;\r
1835 ModeBuffer->BitsPerPixel = 8;\r
1836 ModeBuffer->ColorDepth = 32;\r
1837 ModeBuffer->RefreshRate = 60;\r
1838\r
1839 BiosVideoPrivate->ModeData = ModeBuffer;\r
1840\r
1841 //\r
1842 // Test to see if the Video Adapter support the 640x480 16 color mode\r
1843 //\r
1844 BiosVideoPrivate->GraphicsOutput.Mode->Mode = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER;\r
1845 Status = BiosVideoGraphicsOutputSetMode (&BiosVideoPrivate->GraphicsOutput, 0);\r
1846\r
1847Done:\r
1848 //\r
1849 // If there was an error, then free the mode structure\r
1850 //\r
1851 if (EFI_ERROR (Status)) {\r
1852 if (BiosVideoPrivate->ModeData != NULL) {\r
1853 FreePool (BiosVideoPrivate->ModeData);\r
1854 BiosVideoPrivate->ModeData = NULL;\r
1855 }\r
1856 if (BiosVideoPrivate->GraphicsOutput.Mode != NULL) {\r
1857 if (BiosVideoPrivate->GraphicsOutput.Mode->Info != NULL) {\r
1858 FreePool (BiosVideoPrivate->GraphicsOutput.Mode->Info);\r
1859 BiosVideoPrivate->GraphicsOutput.Mode->Info = NULL;\r
1860 }\r
1861 FreePool (BiosVideoPrivate->GraphicsOutput.Mode);\r
1862 BiosVideoPrivate->GraphicsOutput.Mode = NULL;\r
1863 }\r
1864 }\r
1865 return Status;\r
1866}\r
1867\r
1868//\r
1869// Graphics Output Protocol Member Functions for VESA BIOS Extensions\r
1870//\r
1871\r
1872/**\r
1873 Graphics Output protocol interface to get video mode.\r
1874\r
1875 @param This Protocol instance pointer.\r
1876 @param ModeNumber The mode number to return information on.\r
1877 @param SizeOfInfo A pointer to the size, in bytes, of the Info\r
1878 buffer.\r
1879 @param Info Caller allocated buffer that returns information\r
1880 about ModeNumber.\r
1881\r
1882 @retval EFI_SUCCESS Mode information returned.\r
1883 @retval EFI_DEVICE_ERROR A hardware error occurred trying to retrieve the\r
1884 video mode.\r
1885 @retval EFI_NOT_STARTED Video display is not initialized. Call SetMode ()\r
1886 @retval EFI_INVALID_PARAMETER One of the input args was NULL.\r
1887\r
1888**/\r
1889EFI_STATUS\r
1890EFIAPI\r
1891BiosVideoGraphicsOutputQueryMode (\r
1892 IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,\r
1893 IN UINT32 ModeNumber,\r
1894 OUT UINTN *SizeOfInfo,\r
1895 OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info\r
1896 )\r
1897{\r
1898 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
1899 BIOS_VIDEO_MODE_DATA *ModeData;\r
1900\r
1901 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS (This);\r
1902\r
1903 if (BiosVideoPrivate->HardwareNeedsStarting) {\r
1904 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
1905 EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
1906 EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_EC_OUTPUT_ERROR,\r
1907 BiosVideoPrivate->GopDevicePath\r
1908 );\r
1909 return EFI_NOT_STARTED;\r
1910 }\r
1911\r
1912 if (This == NULL || Info == NULL || SizeOfInfo == NULL || ModeNumber >= This->Mode->MaxMode) {\r
1913 return EFI_INVALID_PARAMETER;\r
1914 }\r
1915\r
1916 *Info = (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *) AllocatePool (\r
1917 sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION)\r
1918 );\r
1919 if (NULL == *Info) {\r
1920 return EFI_OUT_OF_RESOURCES;\r
1921 }\r
1922\r
1923 *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);\r
1924\r
1925 ModeData = &BiosVideoPrivate->ModeData[ModeNumber];\r
1926 (*Info)->Version = 0;\r
1927 (*Info)->HorizontalResolution = ModeData->HorizontalResolution;\r
1928 (*Info)->VerticalResolution = ModeData->VerticalResolution;\r
1929 (*Info)->PixelFormat = ModeData->PixelFormat;\r
1930 CopyMem (&((*Info)->PixelInformation), &(ModeData->PixelBitMask), sizeof(ModeData->PixelBitMask));\r
1931\r
1932 (*Info)->PixelsPerScanLine = (ModeData->BytesPerScanLine * 8) / ModeData->BitsPerPixel;\r
1933\r
1934 return EFI_SUCCESS;\r
1935}\r
1936\r
1937/**\r
1938 Worker function to set video mode.\r
1939\r
1940 @param BiosVideoPrivate Instance of BIOS_VIDEO_DEV.\r
1941 @param ModeData The mode data to be set.\r
1942 @param DevicePath Pointer to Device Path Protocol.\r
1943\r
1944 @retval EFI_SUCCESS Graphics mode was changed.\r
1945 @retval EFI_DEVICE_ERROR The device had an error and could not complete the\r
1946 request.\r
1947 @retval EFI_UNSUPPORTED ModeNumber is not supported by this device.\r
1948\r
1949**/\r
1950EFI_STATUS\r
1951BiosVideoSetModeWorker (\r
1952 IN BIOS_VIDEO_DEV *BiosVideoPrivate,\r
1953 IN BIOS_VIDEO_MODE_DATA *ModeData,\r
1954 IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
1955 )\r
1956{\r
1957 EFI_STATUS Status;\r
1958 EFI_IA32_REGISTER_SET Regs;\r
1959\r
1960 if (BiosVideoPrivate->LineBuffer != NULL) {\r
1961 FreePool (BiosVideoPrivate->LineBuffer);\r
1962 }\r
1963\r
1964 if (BiosVideoPrivate->VgaFrameBuffer != NULL) {\r
1965 FreePool (BiosVideoPrivate->VgaFrameBuffer);\r
1966 }\r
1967\r
1968 if (BiosVideoPrivate->VbeFrameBuffer != NULL) {\r
1969 FreePool (BiosVideoPrivate->VbeFrameBuffer);\r
1970 }\r
1971\r
1972 BiosVideoPrivate->LineBuffer = (UINT8 *) AllocatePool (\r
1973 ModeData->BytesPerScanLine\r
1974 );\r
1975 if (NULL == BiosVideoPrivate->LineBuffer) {\r
1976 return EFI_OUT_OF_RESOURCES;\r
1977 }\r
1978 //\r
1979 // Clear all registers\r
1980 //\r
1981 ZeroMem (&Regs, sizeof (Regs));\r
1982\r
1983 if (ModeData->VbeModeNumber < 0x100) {\r
1984 //\r
1985 // Allocate a working buffer for BLT operations to the VGA frame buffer\r
1986 //\r
1987 BiosVideoPrivate->VgaFrameBuffer = (UINT8 *) AllocatePool (4 * 480 * 80);\r
1988 if (NULL == BiosVideoPrivate->VgaFrameBuffer) {\r
1989 return EFI_OUT_OF_RESOURCES;\r
1990 }\r
1991 //\r
1992 // Set VGA Mode\r
1993 //\r
1994 Regs.X.AX = ModeData->VbeModeNumber;\r
1995 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
1996\r
1997 } else {\r
1998 //\r
1999 // Allocate a working buffer for BLT operations to the VBE frame buffer\r
2000 //\r
2001 BiosVideoPrivate->VbeFrameBuffer =\r
2002 (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) AllocatePool (\r
2003 ModeData->BytesPerScanLine * ModeData->VerticalResolution\r
2004 );\r
2005 if (NULL == BiosVideoPrivate->VbeFrameBuffer) {\r
2006 return EFI_OUT_OF_RESOURCES;\r
2007 }\r
2008 //\r
2009 // Set VBE mode\r
2010 //\r
2011 Regs.X.AX = VESA_BIOS_EXTENSIONS_SET_MODE;\r
2012 Regs.X.BX = (UINT16) (ModeData->VbeModeNumber | VESA_BIOS_EXTENSIONS_MODE_NUMBER_LINEAR_FRAME_BUFFER);\r
2013 ZeroMem (BiosVideoPrivate->VbeCrtcInformationBlock, sizeof (VESA_BIOS_EXTENSIONS_CRTC_INFORMATION_BLOCK));\r
2014 Regs.X.ES = EFI_SEGMENT ((UINTN) BiosVideoPrivate->VbeCrtcInformationBlock);\r
2015 Regs.X.DI = EFI_OFFSET ((UINTN) BiosVideoPrivate->VbeCrtcInformationBlock);\r
2016 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
2017\r
2018 //\r
2019 // Check to see if the call succeeded\r
2020 //\r
2021 if (Regs.X.AX != VESA_BIOS_EXTENSIONS_STATUS_SUCCESS) {\r
2022 REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r
2023 EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
2024 EFI_PERIPHERAL_LOCAL_CONSOLE | EFI_P_EC_OUTPUT_ERROR,\r
2025 DevicePath\r
2026 );\r
2027 return EFI_DEVICE_ERROR;\r
2028 }\r
2029 //\r
2030 // Initialize the state of the VbeFrameBuffer\r
2031 //\r
2032 Status = BiosVideoPrivate->PciIo->Mem.Read (\r
2033 BiosVideoPrivate->PciIo,\r
2034 EfiPciIoWidthUint32,\r
2035 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2036 (UINT64) (UINTN) ModeData->LinearFrameBuffer,\r
2037 (ModeData->BytesPerScanLine * ModeData->VerticalResolution) >> 2,\r
2038 BiosVideoPrivate->VbeFrameBuffer\r
2039 );\r
2040 if (EFI_ERROR (Status)) {\r
2041 return Status;\r
2042 }\r
2043 }\r
2044\r
2045 return EFI_SUCCESS;\r
2046}\r
2047\r
2048/**\r
2049 Graphics Output protocol interface to set video mode.\r
2050\r
2051 @param This Protocol instance pointer.\r
2052 @param ModeNumber The mode number to be set.\r
2053\r
2054 @retval EFI_SUCCESS Graphics mode was changed.\r
2055 @retval EFI_DEVICE_ERROR The device had an error and could not complete the\r
2056 request.\r
2057 @retval EFI_UNSUPPORTED ModeNumber is not supported by this device.\r
2058\r
2059**/\r
2060EFI_STATUS\r
2061EFIAPI\r
2062BiosVideoGraphicsOutputSetMode (\r
2063 IN EFI_GRAPHICS_OUTPUT_PROTOCOL * This,\r
2064 IN UINT32 ModeNumber\r
2065 )\r
2066{\r
2067 EFI_STATUS Status;\r
2068 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
2069 BIOS_VIDEO_MODE_DATA *ModeData;\r
2070 EFI_GRAPHICS_OUTPUT_BLT_PIXEL Background;\r
2071\r
2072 if (This == NULL) {\r
2073 return EFI_INVALID_PARAMETER;\r
2074 }\r
2075\r
2076 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS (This);\r
2077\r
2078 ModeData = &BiosVideoPrivate->ModeData[ModeNumber];\r
2079\r
2080 if (ModeNumber >= This->Mode->MaxMode) {\r
2081 return EFI_UNSUPPORTED;\r
2082 }\r
2083 \r
2084 if (ModeNumber == This->Mode->Mode) {\r
2085 //\r
2086 // Clear screen to black\r
2087 // \r
2088 ZeroMem (&Background, sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));\r
2089 BiosVideoGraphicsOutputVbeBlt (\r
2090 This,\r
2091 &Background,\r
2092 EfiBltVideoFill,\r
2093 0,\r
2094 0,\r
2095 0,\r
2096 0,\r
2097 ModeData->HorizontalResolution,\r
2098 ModeData->VerticalResolution,\r
2099 0\r
2100 );\r
2101 return EFI_SUCCESS;\r
2102 }\r
2103\r
2104 Status = BiosVideoSetModeWorker (BiosVideoPrivate, ModeData, BiosVideoPrivate->GopDevicePath);\r
2105 if (EFI_ERROR (Status)) {\r
2106 return Status;\r
2107 }\r
2108\r
2109 This->Mode->Mode = ModeNumber;\r
2110 This->Mode->Info->Version = 0;\r
2111 This->Mode->Info->HorizontalResolution = ModeData->HorizontalResolution;\r
2112 This->Mode->Info->VerticalResolution = ModeData->VerticalResolution;\r
2113 This->Mode->Info->PixelFormat = ModeData->PixelFormat;\r
2114 CopyMem (&(This->Mode->Info->PixelInformation), &(ModeData->PixelBitMask), sizeof (ModeData->PixelBitMask));\r
2115 This->Mode->Info->PixelsPerScanLine = (ModeData->BytesPerScanLine * 8) / ModeData->BitsPerPixel;\r
2116 This->Mode->SizeOfInfo = sizeof(EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);\r
bcecde14 2117 This->Mode->FrameBufferSize = ModeData->FrameBufferSize;\r
554e88d2 2118 This->Mode->FrameBufferBase = (EFI_PHYSICAL_ADDRESS) (UINTN) ModeData->LinearFrameBuffer;\r
bcecde14 2119\r
2120 BiosVideoPrivate->HardwareNeedsStarting = FALSE;\r
2121\r
2122 return EFI_SUCCESS;\r
2123}\r
2124\r
2125/**\r
2126 Update physical frame buffer, copy 4 bytes block, then copy remaining bytes.\r
2127\r
2128 @param PciIo The pointer of EFI_PCI_IO_PROTOCOL\r
2129 @param VbeBuffer The data to transfer to screen\r
2130 @param MemAddress Physical frame buffer base address\r
2131 @param DestinationX The X coordinate of the destination for BltOperation\r
2132 @param DestinationY The Y coordinate of the destination for BltOperation\r
2133 @param TotalBytes The total bytes of copy\r
2134 @param VbePixelWidth Bytes per pixel\r
2135 @param BytesPerScanLine Bytes per scan line\r
2136\r
2137**/\r
2138VOID\r
2139CopyVideoBuffer (\r
2140 IN EFI_PCI_IO_PROTOCOL *PciIo,\r
2141 IN UINT8 *VbeBuffer,\r
2142 IN VOID *MemAddress,\r
2143 IN UINTN DestinationX,\r
2144 IN UINTN DestinationY,\r
2145 IN UINTN TotalBytes,\r
2146 IN UINT32 VbePixelWidth,\r
2147 IN UINTN BytesPerScanLine\r
2148 )\r
2149{\r
2150 UINTN FrameBufferAddr;\r
2151 UINTN CopyBlockNum;\r
2152 UINTN RemainingBytes;\r
2153 UINTN UnalignedBytes;\r
2154 EFI_STATUS Status;\r
2155\r
2156 FrameBufferAddr = (UINTN) MemAddress + (DestinationY * BytesPerScanLine) + DestinationX * VbePixelWidth;\r
2157\r
2158 //\r
2159 // If TotalBytes is less than 4 bytes, only start byte copy.\r
2160 //\r
2161 if (TotalBytes < 4) {\r
2162 Status = PciIo->Mem.Write (\r
2163 PciIo,\r
2164 EfiPciIoWidthUint8,\r
2165 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2166 (UINT64) FrameBufferAddr,\r
2167 TotalBytes,\r
2168 VbeBuffer\r
2169 );\r
2170 ASSERT_EFI_ERROR (Status);\r
2171 return;\r
2172 }\r
2173\r
2174 //\r
2175 // If VbeBuffer is not 4-byte aligned, start byte copy.\r
2176 //\r
2177 UnalignedBytes = (4 - ((UINTN) VbeBuffer & 0x3)) & 0x3;\r
2178\r
2179 if (UnalignedBytes != 0) {\r
2180 Status = PciIo->Mem.Write (\r
2181 PciIo,\r
2182 EfiPciIoWidthUint8,\r
2183 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2184 (UINT64) FrameBufferAddr,\r
2185 UnalignedBytes,\r
2186 VbeBuffer\r
2187 );\r
2188 ASSERT_EFI_ERROR (Status);\r
2189 FrameBufferAddr += UnalignedBytes;\r
2190 VbeBuffer += UnalignedBytes;\r
2191 }\r
2192\r
2193 //\r
2194 // Calculate 4-byte block count and remaining bytes.\r
2195 //\r
2196 CopyBlockNum = (TotalBytes - UnalignedBytes) >> 2;\r
2197 RemainingBytes = (TotalBytes - UnalignedBytes) & 3;\r
2198\r
2199 //\r
2200 // Copy 4-byte block and remaining bytes to physical frame buffer.\r
2201 //\r
2202 if (CopyBlockNum != 0) {\r
2203 Status = PciIo->Mem.Write (\r
2204 PciIo,\r
2205 EfiPciIoWidthUint32,\r
2206 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2207 (UINT64) FrameBufferAddr,\r
2208 CopyBlockNum,\r
2209 VbeBuffer\r
2210 );\r
2211 ASSERT_EFI_ERROR (Status);\r
2212 }\r
2213\r
2214 if (RemainingBytes != 0) {\r
2215 FrameBufferAddr += (CopyBlockNum << 2);\r
2216 VbeBuffer += (CopyBlockNum << 2);\r
2217 Status = PciIo->Mem.Write (\r
2218 PciIo,\r
2219 EfiPciIoWidthUint8,\r
2220 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2221 (UINT64) FrameBufferAddr,\r
2222 RemainingBytes,\r
2223 VbeBuffer\r
2224 );\r
2225 ASSERT_EFI_ERROR (Status);\r
2226 }\r
2227}\r
2228\r
2229/**\r
2230 Worker function to block transfer for VBE device.\r
2231\r
2232 @param BiosVideoPrivate Instance of BIOS_VIDEO_DEV\r
2233 @param BltBuffer The data to transfer to screen\r
2234 @param BltOperation The operation to perform\r
2235 @param SourceX The X coordinate of the source for BltOperation\r
2236 @param SourceY The Y coordinate of the source for BltOperation\r
2237 @param DestinationX The X coordinate of the destination for\r
2238 BltOperation\r
2239 @param DestinationY The Y coordinate of the destination for\r
2240 BltOperation\r
2241 @param Width The width of a rectangle in the blt rectangle in\r
2242 pixels\r
2243 @param Height The height of a rectangle in the blt rectangle in\r
2244 pixels\r
2245 @param Delta Not used for EfiBltVideoFill and\r
2246 EfiBltVideoToVideo operation. If a Delta of 0 is\r
2247 used, the entire BltBuffer will be operated on. If\r
2248 a subrectangle of the BltBuffer is used, then\r
2249 Delta represents the number of bytes in a row of\r
2250 the BltBuffer.\r
2251 @param Mode Mode data.\r
2252\r
2253 @retval EFI_INVALID_PARAMETER Invalid parameter passed in\r
2254 @retval EFI_SUCCESS Blt operation success\r
2255\r
2256**/\r
2257EFI_STATUS\r
2258BiosVideoVbeBltWorker (\r
2259 IN BIOS_VIDEO_DEV *BiosVideoPrivate,\r
2260 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL\r
2261 IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,\r
2262 IN UINTN SourceX,\r
2263 IN UINTN SourceY,\r
2264 IN UINTN DestinationX,\r
2265 IN UINTN DestinationY,\r
2266 IN UINTN Width,\r
2267 IN UINTN Height,\r
2268 IN UINTN Delta,\r
2269 IN BIOS_VIDEO_MODE_DATA *Mode\r
2270 )\r
2271{\r
2272 EFI_PCI_IO_PROTOCOL *PciIo;\r
2273 EFI_TPL OriginalTPL;\r
2274 UINTN DstY;\r
2275 UINTN SrcY;\r
2276 UINTN DstX;\r
2277 EFI_GRAPHICS_OUTPUT_BLT_PIXEL *Blt;\r
2278 VOID *MemAddress;\r
2279 EFI_GRAPHICS_OUTPUT_BLT_PIXEL *VbeFrameBuffer;\r
2280 UINTN BytesPerScanLine;\r
2281 UINTN Index;\r
2282 UINT8 *VbeBuffer;\r
2283 UINT8 *VbeBuffer1;\r
2284 UINT8 *BltUint8;\r
2285 UINT32 VbePixelWidth;\r
2286 UINT32 Pixel;\r
2287 UINTN TotalBytes;\r
2288\r
2289 PciIo = BiosVideoPrivate->PciIo;\r
2290\r
2291 VbeFrameBuffer = BiosVideoPrivate->VbeFrameBuffer;\r
2292 MemAddress = Mode->LinearFrameBuffer;\r
2293 BytesPerScanLine = Mode->BytesPerScanLine;\r
2294 VbePixelWidth = Mode->BitsPerPixel / 8;\r
2295 BltUint8 = (UINT8 *) BltBuffer;\r
2296 TotalBytes = Width * VbePixelWidth;\r
2297\r
2298 if (((UINTN) BltOperation) >= EfiGraphicsOutputBltOperationMax) {\r
2299 return EFI_INVALID_PARAMETER;\r
2300 }\r
2301\r
2302 if (Width == 0 || Height == 0) {\r
2303 return EFI_INVALID_PARAMETER;\r
2304 }\r
2305 //\r
2306 // We need to fill the Virtual Screen buffer with the blt data.\r
2307 // The virtual screen is upside down, as the first row is the bootom row of\r
2308 // the image.\r
2309 //\r
2310 if (BltOperation == EfiBltVideoToBltBuffer) {\r
2311 //\r
2312 // Video to BltBuffer: Source is Video, destination is BltBuffer\r
2313 //\r
2314 if (SourceY + Height > Mode->VerticalResolution) {\r
2315 return EFI_INVALID_PARAMETER;\r
2316 }\r
2317\r
2318 if (SourceX + Width > Mode->HorizontalResolution) {\r
2319 return EFI_INVALID_PARAMETER;\r
2320 }\r
2321 } else {\r
2322 //\r
2323 // BltBuffer to Video: Source is BltBuffer, destination is Video\r
2324 //\r
2325 if (DestinationY + Height > Mode->VerticalResolution) {\r
2326 return EFI_INVALID_PARAMETER;\r
2327 }\r
2328\r
2329 if (DestinationX + Width > Mode->HorizontalResolution) {\r
2330 return EFI_INVALID_PARAMETER;\r
2331 }\r
2332 }\r
2333 //\r
2334 // If Delta is zero, then the entire BltBuffer is being used, so Delta\r
2335 // is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,\r
2336 // the number of bytes in each row can be computed.\r
2337 //\r
2338 if (Delta == 0) {\r
2339 Delta = Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);\r
2340 }\r
2341 //\r
2342 // We have to raise to TPL Notify, so we make an atomic write the frame buffer.\r
2343 // We would not want a timer based event (Cursor, ...) to come in while we are\r
2344 // doing this operation.\r
2345 //\r
2346 OriginalTPL = gBS->RaiseTPL (TPL_NOTIFY);\r
2347\r
2348 switch (BltOperation) {\r
2349 case EfiBltVideoToBltBuffer:\r
2350 for (SrcY = SourceY, DstY = DestinationY; DstY < (Height + DestinationY); SrcY++, DstY++) {\r
2351 Blt = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) (BltUint8 + DstY * Delta + DestinationX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));\r
2352 //\r
2353 // Shuffle the packed bytes in the hardware buffer to match EFI_GRAPHICS_OUTPUT_BLT_PIXEL\r
2354 //\r
2355 VbeBuffer = ((UINT8 *) VbeFrameBuffer + (SrcY * BytesPerScanLine + SourceX * VbePixelWidth));\r
2356 for (DstX = DestinationX; DstX < (Width + DestinationX); DstX++) {\r
2357 Pixel = VbeBuffer[0] | VbeBuffer[1] << 8 | VbeBuffer[2] << 16 | VbeBuffer[3] << 24;\r
2358 Blt->Red = (UINT8) ((Pixel >> Mode->Red.Position) & Mode->Red.Mask);\r
2359 Blt->Blue = (UINT8) ((Pixel >> Mode->Blue.Position) & Mode->Blue.Mask);\r
2360 Blt->Green = (UINT8) ((Pixel >> Mode->Green.Position) & Mode->Green.Mask);\r
2361 Blt->Reserved = 0;\r
2362 Blt++;\r
2363 VbeBuffer += VbePixelWidth;\r
2364 }\r
2365\r
2366 }\r
2367 break;\r
2368\r
2369 case EfiBltVideoToVideo:\r
2370 for (Index = 0; Index < Height; Index++) {\r
2371 if (DestinationY <= SourceY) {\r
2372 SrcY = SourceY + Index;\r
2373 DstY = DestinationY + Index;\r
2374 } else {\r
2375 SrcY = SourceY + Height - Index - 1;\r
2376 DstY = DestinationY + Height - Index - 1;\r
2377 }\r
2378\r
2379 VbeBuffer = ((UINT8 *) VbeFrameBuffer + DstY * BytesPerScanLine + DestinationX * VbePixelWidth);\r
2380 VbeBuffer1 = ((UINT8 *) VbeFrameBuffer + SrcY * BytesPerScanLine + SourceX * VbePixelWidth);\r
2381\r
2382 gBS->CopyMem (\r
2383 VbeBuffer,\r
2384 VbeBuffer1,\r
2385 TotalBytes\r
2386 );\r
2387\r
2388 //\r
2389 // Update physical frame buffer.\r
2390 //\r
2391 CopyVideoBuffer (\r
2392 PciIo,\r
2393 VbeBuffer,\r
2394 MemAddress,\r
2395 DestinationX,\r
2396 DstY,\r
2397 TotalBytes,\r
2398 VbePixelWidth,\r
2399 BytesPerScanLine\r
2400 );\r
2401 }\r
2402 break;\r
2403\r
2404 case EfiBltVideoFill:\r
2405 VbeBuffer = (UINT8 *) ((UINTN) VbeFrameBuffer + (DestinationY * BytesPerScanLine) + DestinationX * VbePixelWidth);\r
2406 Blt = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) BltUint8;\r
2407 //\r
2408 // Shuffle the RGB fields in EFI_GRAPHICS_OUTPUT_BLT_PIXEL to match the hardware buffer\r
2409 //\r
2410 Pixel = ((Blt->Red & Mode->Red.Mask) << Mode->Red.Position) |\r
2411 (\r
2412 (Blt->Green & Mode->Green.Mask) <<\r
2413 Mode->Green.Position\r
2414 ) |\r
2415 ((Blt->Blue & Mode->Blue.Mask) << Mode->Blue.Position);\r
2416\r
2417 for (Index = 0; Index < Width; Index++) {\r
2418 gBS->CopyMem (\r
2419 VbeBuffer,\r
2420 &Pixel,\r
2421 VbePixelWidth\r
2422 );\r
2423 VbeBuffer += VbePixelWidth;\r
2424 }\r
2425\r
2426 VbeBuffer = (UINT8 *) ((UINTN) VbeFrameBuffer + (DestinationY * BytesPerScanLine) + DestinationX * VbePixelWidth);\r
2427 for (DstY = DestinationY + 1; DstY < (Height + DestinationY); DstY++) {\r
2428 gBS->CopyMem (\r
2429 (VOID *) ((UINTN) VbeFrameBuffer + (DstY * BytesPerScanLine) + DestinationX * VbePixelWidth),\r
2430 VbeBuffer,\r
2431 TotalBytes\r
2432 );\r
2433 }\r
2434\r
2435 for (DstY = DestinationY; DstY < (Height + DestinationY); DstY++) {\r
2436 //\r
2437 // Update physical frame buffer.\r
2438 //\r
2439 CopyVideoBuffer (\r
2440 PciIo,\r
2441 VbeBuffer,\r
2442 MemAddress,\r
2443 DestinationX,\r
2444 DstY,\r
2445 TotalBytes,\r
2446 VbePixelWidth,\r
2447 BytesPerScanLine\r
2448 );\r
2449 }\r
2450 break;\r
2451\r
2452 case EfiBltBufferToVideo:\r
2453 for (SrcY = SourceY, DstY = DestinationY; SrcY < (Height + SourceY); SrcY++, DstY++) {\r
2454 Blt = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) (BltUint8 + (SrcY * Delta) + (SourceX) * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));\r
2455 VbeBuffer = ((UINT8 *) VbeFrameBuffer + (DstY * BytesPerScanLine + DestinationX * VbePixelWidth));\r
2456 for (DstX = DestinationX; DstX < (Width + DestinationX); DstX++) {\r
2457 //\r
2458 // Shuffle the RGB fields in EFI_GRAPHICS_OUTPUT_BLT_PIXEL to match the hardware buffer\r
2459 //\r
2460 Pixel = ((Blt->Red & Mode->Red.Mask) << Mode->Red.Position) |\r
2461 ((Blt->Green & Mode->Green.Mask) << Mode->Green.Position) |\r
2462 ((Blt->Blue & Mode->Blue.Mask) << Mode->Blue.Position);\r
2463 gBS->CopyMem (\r
2464 VbeBuffer,\r
2465 &Pixel,\r
2466 VbePixelWidth\r
2467 );\r
2468 Blt++;\r
2469 VbeBuffer += VbePixelWidth;\r
2470 }\r
2471\r
2472 VbeBuffer = ((UINT8 *) VbeFrameBuffer + (DstY * BytesPerScanLine + DestinationX * VbePixelWidth));\r
2473\r
2474 //\r
2475 // Update physical frame buffer.\r
2476 //\r
2477 CopyVideoBuffer (\r
2478 PciIo,\r
2479 VbeBuffer,\r
2480 MemAddress,\r
2481 DestinationX,\r
2482 DstY,\r
2483 TotalBytes,\r
2484 VbePixelWidth,\r
2485 BytesPerScanLine\r
2486 );\r
2487 }\r
2488 break;\r
2489\r
2490 default: ;\r
2491 }\r
2492\r
2493 gBS->RestoreTPL (OriginalTPL);\r
2494\r
2495 return EFI_SUCCESS;\r
2496}\r
2497\r
2498/**\r
2499 Graphics Output protocol instance to block transfer for VBE device.\r
2500\r
2501 @param This Pointer to Graphics Output protocol instance\r
2502 @param BltBuffer The data to transfer to screen\r
2503 @param BltOperation The operation to perform\r
2504 @param SourceX The X coordinate of the source for BltOperation\r
2505 @param SourceY The Y coordinate of the source for BltOperation\r
2506 @param DestinationX The X coordinate of the destination for\r
2507 BltOperation\r
2508 @param DestinationY The Y coordinate of the destination for\r
2509 BltOperation\r
2510 @param Width The width of a rectangle in the blt rectangle in\r
2511 pixels\r
2512 @param Height The height of a rectangle in the blt rectangle in\r
2513 pixels\r
2514 @param Delta Not used for EfiBltVideoFill and\r
2515 EfiBltVideoToVideo operation. If a Delta of 0 is\r
2516 used, the entire BltBuffer will be operated on. If\r
2517 a subrectangle of the BltBuffer is used, then\r
2518 Delta represents the number of bytes in a row of\r
2519 the BltBuffer.\r
2520\r
2521 @retval EFI_INVALID_PARAMETER Invalid parameter passed in\r
2522 @retval EFI_SUCCESS Blt operation success\r
2523\r
2524**/\r
2525EFI_STATUS\r
2526EFIAPI\r
2527BiosVideoGraphicsOutputVbeBlt (\r
2528 IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,\r
2529 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL\r
2530 IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,\r
2531 IN UINTN SourceX,\r
2532 IN UINTN SourceY,\r
2533 IN UINTN DestinationX,\r
2534 IN UINTN DestinationY,\r
2535 IN UINTN Width,\r
2536 IN UINTN Height,\r
2537 IN UINTN Delta\r
2538 )\r
2539{\r
2540 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
2541 BIOS_VIDEO_MODE_DATA *Mode;\r
2542\r
2543 if (This == NULL) {\r
2544 return EFI_INVALID_PARAMETER;\r
2545 }\r
2546\r
2547 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS (This);\r
2548 Mode = &BiosVideoPrivate->ModeData[This->Mode->Mode];\r
2549\r
2550 return BiosVideoVbeBltWorker (\r
2551 BiosVideoPrivate,\r
2552 BltBuffer,\r
2553 BltOperation,\r
2554 SourceX,\r
2555 SourceY,\r
2556 DestinationX,\r
2557 DestinationY,\r
2558 Width,\r
2559 Height,\r
2560 Delta,\r
2561 Mode\r
2562 );\r
2563}\r
2564\r
2565/**\r
2566 Write graphics controller registers.\r
2567\r
2568 @param PciIo Pointer to PciIo protocol instance of the\r
2569 controller\r
2570 @param Address Register address\r
2571 @param Data Data to be written to register\r
2572\r
2573 @return None\r
2574\r
2575**/\r
2576VOID\r
2577WriteGraphicsController (\r
2578 IN EFI_PCI_IO_PROTOCOL *PciIo,\r
2579 IN UINTN Address,\r
2580 IN UINTN Data\r
2581 )\r
2582{\r
2583 Address = Address | (Data << 8);\r
2584 PciIo->Io.Write (\r
2585 PciIo,\r
2586 EfiPciIoWidthUint16,\r
2587 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2588 VGA_GRAPHICS_CONTROLLER_ADDRESS_REGISTER,\r
2589 1,\r
2590 &Address\r
2591 );\r
2592}\r
2593\r
2594\r
2595/**\r
2596 Read the four bit plane of VGA frame buffer.\r
2597\r
2598 @param PciIo Pointer to PciIo protocol instance of the\r
2599 controller\r
2600 @param HardwareBuffer Hardware VGA frame buffer address\r
2601 @param MemoryBuffer Memory buffer address\r
2602 @param WidthInBytes Number of bytes in a line to read\r
2603 @param Height Height of the area to read\r
2604\r
2605 @return None\r
2606\r
2607**/\r
2608VOID\r
2609VgaReadBitPlanes (\r
2610 EFI_PCI_IO_PROTOCOL *PciIo,\r
2611 UINT8 *HardwareBuffer,\r
2612 UINT8 *MemoryBuffer,\r
2613 UINTN WidthInBytes,\r
2614 UINTN Height\r
2615 )\r
2616{\r
2617 UINTN BitPlane;\r
2618 UINTN Rows;\r
2619 UINTN FrameBufferOffset;\r
2620 UINT8 *Source;\r
2621 UINT8 *Destination;\r
2622\r
2623 //\r
2624 // Program the Mode Register Write mode 0, Read mode 0\r
2625 //\r
2626 WriteGraphicsController (\r
2627 PciIo,\r
2628 VGA_GRAPHICS_CONTROLLER_MODE_REGISTER,\r
2629 VGA_GRAPHICS_CONTROLLER_READ_MODE_0 | VGA_GRAPHICS_CONTROLLER_WRITE_MODE_0\r
2630 );\r
2631\r
2632 for (BitPlane = 0, FrameBufferOffset = 0;\r
2633 BitPlane < VGA_NUMBER_OF_BIT_PLANES;\r
2634 BitPlane++, FrameBufferOffset += VGA_BYTES_PER_BIT_PLANE\r
2635 ) {\r
2636 //\r
2637 // Program the Read Map Select Register to select the correct bit plane\r
2638 //\r
2639 WriteGraphicsController (\r
2640 PciIo,\r
2641 VGA_GRAPHICS_CONTROLLER_READ_MAP_SELECT_REGISTER,\r
2642 BitPlane\r
2643 );\r
2644\r
2645 Source = HardwareBuffer;\r
2646 Destination = MemoryBuffer + FrameBufferOffset;\r
2647\r
2648 for (Rows = 0; Rows < Height; Rows++, Source += VGA_BYTES_PER_SCAN_LINE, Destination += VGA_BYTES_PER_SCAN_LINE) {\r
2649 PciIo->Mem.Read (\r
2650 PciIo,\r
2651 EfiPciIoWidthUint8,\r
2652 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2653 (UINT64) (UINTN) Source,\r
2654 WidthInBytes,\r
2655 (VOID *) Destination\r
2656 );\r
2657 }\r
2658 }\r
2659}\r
2660\r
2661\r
2662/**\r
2663 Internal routine to convert VGA color to Grahpics Output color.\r
2664\r
2665 @param MemoryBuffer Buffer containing VGA color\r
2666 @param CoordinateX The X coordinate of pixel on screen\r
2667 @param CoordinateY The Y coordinate of pixel on screen\r
2668 @param BltBuffer Buffer to contain converted Grahpics Output color\r
2669\r
2670 @return None\r
2671\r
2672**/\r
2673VOID\r
2674VgaConvertToGraphicsOutputColor (\r
2675 UINT8 *MemoryBuffer,\r
2676 UINTN CoordinateX,\r
2677 UINTN CoordinateY,\r
2678 EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer\r
2679 )\r
2680{\r
2681 UINTN Mask;\r
2682 UINTN Bit;\r
2683 UINTN Color;\r
2684\r
2685 MemoryBuffer += ((CoordinateY << 6) + (CoordinateY << 4) + (CoordinateX >> 3));\r
2686 Mask = mVgaBitMaskTable[CoordinateX & 0x07];\r
2687 for (Bit = 0x01, Color = 0; Bit < 0x10; Bit <<= 1, MemoryBuffer += VGA_BYTES_PER_BIT_PLANE) {\r
2688 if ((*MemoryBuffer & Mask) != 0) {\r
2689 Color |= Bit;\r
2690 }\r
2691 }\r
2692\r
2693 *BltBuffer = mVgaColorToGraphicsOutputColor[Color];\r
2694}\r
2695\r
2696/**\r
2697 Internal routine to convert Grahpics Output color to VGA color.\r
2698\r
2699 @param BltBuffer buffer containing Grahpics Output color\r
2700\r
2701 @return Converted VGA color\r
2702\r
2703**/\r
2704UINT8\r
2705VgaConvertColor (\r
2706 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer\r
2707 )\r
2708{\r
2709 UINT8 Color;\r
2710\r
2711 Color = (UINT8) ((BltBuffer->Blue >> 7) | ((BltBuffer->Green >> 6) & 0x02) | ((BltBuffer->Red >> 5) & 0x04));\r
2712 if ((BltBuffer->Red + BltBuffer->Green + BltBuffer->Blue) > 0x180) {\r
2713 Color |= 0x08;\r
2714 }\r
2715\r
2716 return Color;\r
2717}\r
2718\r
2719\r
2720/**\r
2721 Grahpics Output protocol instance to block transfer for VGA device.\r
2722\r
2723 @param This Pointer to Grahpics Output protocol instance\r
2724 @param BltBuffer The data to transfer to screen\r
2725 @param BltOperation The operation to perform\r
2726 @param SourceX The X coordinate of the source for BltOperation\r
2727 @param SourceY The Y coordinate of the source for BltOperation\r
2728 @param DestinationX The X coordinate of the destination for\r
2729 BltOperation\r
2730 @param DestinationY The Y coordinate of the destination for\r
2731 BltOperation\r
2732 @param Width The width of a rectangle in the blt rectangle in\r
2733 pixels\r
2734 @param Height The height of a rectangle in the blt rectangle in\r
2735 pixels\r
2736 @param Delta Not used for EfiBltVideoFill and\r
2737 EfiBltVideoToVideo operation. If a Delta of 0 is\r
2738 used, the entire BltBuffer will be operated on. If\r
2739 a subrectangle of the BltBuffer is used, then\r
2740 Delta represents the number of bytes in a row of\r
2741 the BltBuffer.\r
2742\r
2743 @retval EFI_INVALID_PARAMETER Invalid parameter passed in\r
2744 @retval EFI_SUCCESS Blt operation success\r
2745\r
2746**/\r
2747EFI_STATUS\r
2748EFIAPI\r
2749BiosVideoGraphicsOutputVgaBlt (\r
2750 IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,\r
2751 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL\r
2752 IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,\r
2753 IN UINTN SourceX,\r
2754 IN UINTN SourceY,\r
2755 IN UINTN DestinationX,\r
2756 IN UINTN DestinationY,\r
2757 IN UINTN Width,\r
2758 IN UINTN Height,\r
2759 IN UINTN Delta\r
2760 )\r
2761{\r
2762 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
2763 EFI_TPL OriginalTPL;\r
2764 UINT8 *MemAddress;\r
2765 UINTN BytesPerScanLine;\r
2766 UINTN Bit;\r
2767 UINTN Index;\r
2768 UINTN Index1;\r
2769 UINTN StartAddress;\r
2770 UINTN Bytes;\r
2771 UINTN Offset;\r
2772 UINT8 LeftMask;\r
2773 UINT8 RightMask;\r
2774 UINTN Address;\r
2775 UINTN AddressFix;\r
2776 UINT8 *Address1;\r
2777 UINT8 *SourceAddress;\r
2778 UINT8 *DestinationAddress;\r
2779 EFI_PCI_IO_PROTOCOL *PciIo;\r
2780 UINT8 Data;\r
2781 UINT8 PixelColor;\r
2782 UINT8 *VgaFrameBuffer;\r
2783 UINTN SourceOffset;\r
2784 UINTN SourceWidth;\r
2785 UINTN Rows;\r
2786 UINTN Columns;\r
2787 UINTN CoordinateX;\r
2788 UINTN CoordinateY;\r
2789 UINTN CurrentMode;\r
2790\r
2791 if (This == NULL || ((UINTN) BltOperation) >= EfiGraphicsOutputBltOperationMax) {\r
2792 return EFI_INVALID_PARAMETER;\r
2793 }\r
2794\r
2795 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS (This);\r
2796\r
2797 CurrentMode = This->Mode->Mode;\r
2798 PciIo = BiosVideoPrivate->PciIo;\r
2799 MemAddress = BiosVideoPrivate->ModeData[CurrentMode].LinearFrameBuffer;\r
2800 BytesPerScanLine = BiosVideoPrivate->ModeData[CurrentMode].BytesPerScanLine >> 3;\r
2801 VgaFrameBuffer = BiosVideoPrivate->VgaFrameBuffer;\r
2802\r
2803\r
2804 if (Width == 0 || Height == 0) {\r
2805 return EFI_INVALID_PARAMETER;\r
2806 }\r
2807 //\r
2808 // We need to fill the Virtual Screen buffer with the blt data.\r
2809 // The virtual screen is upside down, as the first row is the bootom row of\r
2810 // the image.\r
2811 //\r
2812 if (BltOperation == EfiBltVideoToBltBuffer) {\r
2813 //\r
2814 // Video to BltBuffer: Source is Video, destination is BltBuffer\r
2815 //\r
2816 if (SourceY + Height > BiosVideoPrivate->ModeData[CurrentMode].VerticalResolution) {\r
2817 return EFI_INVALID_PARAMETER;\r
2818 }\r
2819\r
2820 if (SourceX + Width > BiosVideoPrivate->ModeData[CurrentMode].HorizontalResolution) {\r
2821 return EFI_INVALID_PARAMETER;\r
2822 }\r
2823 } else {\r
2824 //\r
2825 // BltBuffer to Video: Source is BltBuffer, destination is Video\r
2826 //\r
2827 if (DestinationY + Height > BiosVideoPrivate->ModeData[CurrentMode].VerticalResolution) {\r
2828 return EFI_INVALID_PARAMETER;\r
2829 }\r
2830\r
2831 if (DestinationX + Width > BiosVideoPrivate->ModeData[CurrentMode].HorizontalResolution) {\r
2832 return EFI_INVALID_PARAMETER;\r
2833 }\r
2834 }\r
2835 //\r
2836 // If Delta is zero, then the entire BltBuffer is being used, so Delta\r
2837 // is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,\r
2838 // the number of bytes in each row can be computed.\r
2839 //\r
2840 if (Delta == 0) {\r
2841 Delta = Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);\r
2842 }\r
2843 //\r
2844 // We have to raise to TPL Notify, so we make an atomic write the frame buffer.\r
2845 // We would not want a timer based event (Cursor, ...) to come in while we are\r
2846 // doing this operation.\r
2847 //\r
2848 OriginalTPL = gBS->RaiseTPL (TPL_NOTIFY);\r
2849\r
2850 //\r
2851 // Compute some values we need for VGA\r
2852 //\r
2853 switch (BltOperation) {\r
2854 case EfiBltVideoToBltBuffer:\r
2855\r
2856 SourceOffset = (SourceY << 6) + (SourceY << 4) + (SourceX >> 3);\r
2857 SourceWidth = ((SourceX + Width - 1) >> 3) - (SourceX >> 3) + 1;\r
2858\r
2859 //\r
2860 // Read all the pixels in the 4 bit planes into a memory buffer that looks like the VGA buffer\r
2861 //\r
2862 VgaReadBitPlanes (\r
2863 PciIo,\r
2864 MemAddress + SourceOffset,\r
2865 VgaFrameBuffer + SourceOffset,\r
2866 SourceWidth,\r
2867 Height\r
2868 );\r
2869\r
2870 //\r
2871 // Convert VGA Bit Planes to a Graphics Output 32-bit color value\r
2872 //\r
2873 BltBuffer += (DestinationY * (Delta >> 2) + DestinationX);\r
2874 for (Rows = 0, CoordinateY = SourceY; Rows < Height; Rows++, CoordinateY++, BltBuffer += (Delta >> 2)) {\r
2875 for (Columns = 0, CoordinateX = SourceX; Columns < Width; Columns++, CoordinateX++, BltBuffer++) {\r
2876 VgaConvertToGraphicsOutputColor (VgaFrameBuffer, CoordinateX, CoordinateY, BltBuffer);\r
2877 }\r
2878\r
2879 BltBuffer -= Width;\r
2880 }\r
2881\r
2882 break;\r
2883\r
2884 case EfiBltVideoToVideo:\r
2885 //\r
2886 // Check for an aligned Video to Video operation\r
2887 //\r
2888 if ((SourceX & 0x07) == 0x00 && (DestinationX & 0x07) == 0x00 && (Width & 0x07) == 0x00) {\r
2889 //\r
2890 // Program the Mode Register Write mode 1, Read mode 0\r
2891 //\r
2892 WriteGraphicsController (\r
2893 PciIo,\r
2894 VGA_GRAPHICS_CONTROLLER_MODE_REGISTER,\r
2895 VGA_GRAPHICS_CONTROLLER_READ_MODE_0 | VGA_GRAPHICS_CONTROLLER_WRITE_MODE_1\r
2896 );\r
2897\r
2898 SourceAddress = (UINT8 *) (MemAddress + (SourceY << 6) + (SourceY << 4) + (SourceX >> 3));\r
2899 DestinationAddress = (UINT8 *) (MemAddress + (DestinationY << 6) + (DestinationY << 4) + (DestinationX >> 3));\r
2900 Bytes = Width >> 3;\r
2901 for (Index = 0, Offset = 0; Index < Height; Index++, Offset += BytesPerScanLine) {\r
2902 PciIo->CopyMem (\r
2903 PciIo,\r
2904 EfiPciIoWidthUint8,\r
2905 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2906 (UINT64) (UINTN) (DestinationAddress + Offset),\r
2907 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2908 (UINT64) (UINTN) (SourceAddress + Offset),\r
2909 Bytes\r
2910 );\r
2911 }\r
2912 } else {\r
2913 SourceOffset = (SourceY << 6) + (SourceY << 4) + (SourceX >> 3);\r
2914 SourceWidth = ((SourceX + Width - 1) >> 3) - (SourceX >> 3) + 1;\r
2915\r
2916 //\r
2917 // Read all the pixels in the 4 bit planes into a memory buffer that looks like the VGA buffer\r
2918 //\r
2919 VgaReadBitPlanes (\r
2920 PciIo,\r
2921 MemAddress + SourceOffset,\r
2922 VgaFrameBuffer + SourceOffset,\r
2923 SourceWidth,\r
2924 Height\r
2925 );\r
2926 }\r
2927\r
2928 break;\r
2929\r
2930 case EfiBltVideoFill:\r
2931 StartAddress = (UINTN) (MemAddress + (DestinationY << 6) + (DestinationY << 4) + (DestinationX >> 3));\r
2932 Bytes = ((DestinationX + Width - 1) >> 3) - (DestinationX >> 3);\r
2933 LeftMask = mVgaLeftMaskTable[DestinationX & 0x07];\r
2934 RightMask = mVgaRightMaskTable[(DestinationX + Width - 1) & 0x07];\r
2935 if (Bytes == 0) {\r
2936 LeftMask = (UINT8) (LeftMask & RightMask);\r
2937 RightMask = 0;\r
2938 }\r
2939\r
2940 if (LeftMask == 0xff) {\r
2941 StartAddress--;\r
2942 Bytes++;\r
2943 LeftMask = 0;\r
2944 }\r
2945\r
2946 if (RightMask == 0xff) {\r
2947 Bytes++;\r
2948 RightMask = 0;\r
2949 }\r
2950\r
2951 PixelColor = VgaConvertColor (BltBuffer);\r
2952\r
2953 //\r
2954 // Program the Mode Register Write mode 2, Read mode 0\r
2955 //\r
2956 WriteGraphicsController (\r
2957 PciIo,\r
2958 VGA_GRAPHICS_CONTROLLER_MODE_REGISTER,\r
2959 VGA_GRAPHICS_CONTROLLER_READ_MODE_0 | VGA_GRAPHICS_CONTROLLER_WRITE_MODE_2\r
2960 );\r
2961\r
2962 //\r
2963 // Program the Data Rotate/Function Select Register to replace\r
2964 //\r
2965 WriteGraphicsController (\r
2966 PciIo,\r
2967 VGA_GRAPHICS_CONTROLLER_DATA_ROTATE_REGISTER,\r
2968 VGA_GRAPHICS_CONTROLLER_FUNCTION_REPLACE\r
2969 );\r
2970\r
2971 if (LeftMask != 0) {\r
2972 //\r
2973 // Program the BitMask register with the Left column mask\r
2974 //\r
2975 WriteGraphicsController (\r
2976 PciIo,\r
2977 VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER,\r
2978 LeftMask\r
2979 );\r
2980\r
2981 for (Index = 0, Address = StartAddress; Index < Height; Index++, Address += BytesPerScanLine) {\r
2982 //\r
2983 // Read data from the bit planes into the latches\r
2984 //\r
2985 PciIo->Mem.Read (\r
2986 PciIo,\r
2987 EfiPciIoWidthUint8,\r
2988 EFI_PCI_IO_PASS_THROUGH_BAR,\r
2989 (UINT64) (UINTN) Address,\r
2990 1,\r
2991 &Data\r
2992 );\r
2993 //\r
2994 // Write the lower 4 bits of PixelColor to the bit planes in the pixels enabled by BitMask\r
2995 //\r
2996 PciIo->Mem.Write (\r
2997 PciIo,\r
2998 EfiPciIoWidthUint8,\r
2999 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3000 (UINT64) (UINTN) Address,\r
3001 1,\r
3002 &PixelColor\r
3003 );\r
3004 }\r
3005 }\r
3006\r
3007 if (Bytes > 1) {\r
3008 //\r
3009 // Program the BitMask register with the middle column mask of 0xff\r
3010 //\r
3011 WriteGraphicsController (\r
3012 PciIo,\r
3013 VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER,\r
3014 0xff\r
3015 );\r
3016\r
3017 for (Index = 0, Address = StartAddress + 1; Index < Height; Index++, Address += BytesPerScanLine) {\r
3018 PciIo->Mem.Write (\r
3019 PciIo,\r
3020 EfiPciIoWidthFillUint8,\r
3021 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3022 (UINT64) (UINTN) Address,\r
3023 Bytes - 1,\r
3024 &PixelColor\r
3025 );\r
3026 }\r
3027 }\r
3028\r
3029 if (RightMask != 0) {\r
3030 //\r
3031 // Program the BitMask register with the Right column mask\r
3032 //\r
3033 WriteGraphicsController (\r
3034 PciIo,\r
3035 VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER,\r
3036 RightMask\r
3037 );\r
3038\r
3039 for (Index = 0, Address = StartAddress + Bytes; Index < Height; Index++, Address += BytesPerScanLine) {\r
3040 //\r
3041 // Read data from the bit planes into the latches\r
3042 //\r
3043 PciIo->Mem.Read (\r
3044 PciIo,\r
3045 EfiPciIoWidthUint8,\r
3046 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3047 (UINT64) (UINTN) Address,\r
3048 1,\r
3049 &Data\r
3050 );\r
3051 //\r
3052 // Write the lower 4 bits of PixelColor to the bit planes in the pixels enabled by BitMask\r
3053 //\r
3054 PciIo->Mem.Write (\r
3055 PciIo,\r
3056 EfiPciIoWidthUint8,\r
3057 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3058 (UINT64) (UINTN) Address,\r
3059 1,\r
3060 &PixelColor\r
3061 );\r
3062 }\r
3063 }\r
3064 break;\r
3065\r
3066 case EfiBltBufferToVideo:\r
3067 StartAddress = (UINTN) (MemAddress + (DestinationY << 6) + (DestinationY << 4) + (DestinationX >> 3));\r
3068 LeftMask = mVgaBitMaskTable[DestinationX & 0x07];\r
3069\r
3070 //\r
3071 // Program the Mode Register Write mode 2, Read mode 0\r
3072 //\r
3073 WriteGraphicsController (\r
3074 PciIo,\r
3075 VGA_GRAPHICS_CONTROLLER_MODE_REGISTER,\r
3076 VGA_GRAPHICS_CONTROLLER_READ_MODE_0 | VGA_GRAPHICS_CONTROLLER_WRITE_MODE_2\r
3077 );\r
3078\r
3079 //\r
3080 // Program the Data Rotate/Function Select Register to replace\r
3081 //\r
3082 WriteGraphicsController (\r
3083 PciIo,\r
3084 VGA_GRAPHICS_CONTROLLER_DATA_ROTATE_REGISTER,\r
3085 VGA_GRAPHICS_CONTROLLER_FUNCTION_REPLACE\r
3086 );\r
3087\r
3088 for (Index = 0, Address = StartAddress; Index < Height; Index++, Address += BytesPerScanLine) {\r
3089 for (Index1 = 0; Index1 < Width; Index1++) {\r
3090 BiosVideoPrivate->LineBuffer[Index1] = VgaConvertColor (&BltBuffer[(SourceY + Index) * (Delta >> 2) + SourceX + Index1]);\r
3091 }\r
3092 AddressFix = Address;\r
3093\r
3094 for (Bit = 0; Bit < 8; Bit++) {\r
3095 //\r
3096 // Program the BitMask register with the Left column mask\r
3097 //\r
3098 WriteGraphicsController (\r
3099 PciIo,\r
3100 VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER,\r
3101 LeftMask\r
3102 );\r
3103\r
3104 for (Index1 = Bit, Address1 = (UINT8 *) AddressFix; Index1 < Width; Index1 += 8, Address1++) {\r
3105 //\r
3106 // Read data from the bit planes into the latches\r
3107 //\r
3108 PciIo->Mem.Read (\r
3109 PciIo,\r
3110 EfiPciIoWidthUint8,\r
3111 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3112 (UINT64) (UINTN) Address1,\r
3113 1,\r
3114 &Data\r
3115 );\r
3116\r
3117 PciIo->Mem.Write (\r
3118 PciIo,\r
3119 EfiPciIoWidthUint8,\r
3120 EFI_PCI_IO_PASS_THROUGH_BAR,\r
3121 (UINT64) (UINTN) Address1,\r
3122 1,\r
3123 &BiosVideoPrivate->LineBuffer[Index1]\r
3124 );\r
3125 }\r
3126\r
3127 LeftMask = (UINT8) (LeftMask >> 1);\r
3128 if (LeftMask == 0) {\r
3129 LeftMask = 0x80;\r
3130 AddressFix++;\r
3131 }\r
3132 }\r
3133 }\r
3134\r
3135 break;\r
3136\r
3137 default: ;\r
3138 }\r
3139\r
3140 gBS->RestoreTPL (OriginalTPL);\r
3141\r
3142 return EFI_SUCCESS;\r
3143}\r
3144\r
3145//\r
3146// VGA Mini Port Protocol Functions\r
3147//\r
3148\r
3149/**\r
3150 VgaMiniPort protocol interface to set mode.\r
3151\r
3152 @param This Pointer to VgaMiniPort protocol instance\r
3153 @param ModeNumber The index of the mode\r
3154\r
3155 @retval EFI_UNSUPPORTED The requested mode is not supported\r
3156 @retval EFI_SUCCESS The requested mode is set successfully\r
3157\r
3158**/\r
3159EFI_STATUS\r
3160EFIAPI\r
3161BiosVideoVgaMiniPortSetMode (\r
3162 IN EFI_VGA_MINI_PORT_PROTOCOL *This,\r
3163 IN UINTN ModeNumber\r
3164 )\r
3165{\r
3166 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
3167 EFI_IA32_REGISTER_SET Regs;\r
3168\r
3169 if (This == NULL) {\r
3170 return EFI_INVALID_PARAMETER;\r
3171 }\r
3172\r
3173 //\r
3174 // Make sure the ModeNumber is a valid value\r
3175 //\r
3176 if (ModeNumber >= This->MaxMode) {\r
3177 return EFI_UNSUPPORTED;\r
3178 }\r
3179 //\r
3180 // Get the device structure for this device\r
3181 //\r
3182 BiosVideoPrivate = BIOS_VIDEO_DEV_FROM_VGA_MINI_PORT_THIS (This);\r
3183\r
3184 switch (ModeNumber) {\r
3185 case 0:\r
3186 //\r
3187 // Set the 80x25 Text VGA Mode\r
3188 //\r
3189 Regs.H.AH = 0x00;\r
3190 Regs.H.AL = 0x83;\r
3191 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3192\r
3193 Regs.H.AH = 0x11;\r
3194 Regs.H.AL = 0x14;\r
3195 Regs.H.BL = 0;\r
3196 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3197 break;\r
3198\r
3199 case 1:\r
3200 //\r
3201 // Set the 80x50 Text VGA Mode\r
3202 //\r
3203 Regs.H.AH = 0x00;\r
3204 Regs.H.AL = 0x83;\r
3205 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3206 Regs.H.AH = 0x11;\r
3207 Regs.H.AL = 0x12;\r
3208 Regs.H.BL = 0;\r
3209 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3210 break;\r
3211\r
3212 default:\r
3213 return EFI_UNSUPPORTED;\r
3214 }\r
3215\r
3216 return EFI_SUCCESS;\r
3217}\r
3218\r
3219/**\r
3220 Event handler for Exit Boot Service.\r
3221\r
3222 @param Event The event that be siganlled when exiting boot service.\r
3223 @param Context Pointer to instance of BIOS_VIDEO_DEV.\r
3224\r
3225**/\r
3226VOID\r
3227EFIAPI\r
3228BiosVideoNotifyExitBootServices (\r
3229 IN EFI_EVENT Event,\r
3230 IN VOID *Context\r
3231 )\r
3232{\r
3233 BIOS_VIDEO_DEV *BiosVideoPrivate;\r
3234 EFI_IA32_REGISTER_SET Regs;\r
3235\r
3236 BiosVideoPrivate = (BIOS_VIDEO_DEV *)Context;\r
3237\r
3238 //\r
3239 // Set the 80x25 Text VGA Mode\r
3240 //\r
3241 Regs.H.AH = 0x00;\r
3242 Regs.H.AL = 0x03;\r
3243 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3244\r
3245 Regs.H.AH = 0x00;\r
3246 Regs.H.AL = 0x83;\r
3247 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3248\r
3249 Regs.H.AH = 0x11;\r
3250 Regs.H.AL = 0x04;\r
3251 Regs.H.BL = 0;\r
3252 BiosVideoPrivate->LegacyBios->Int86 (BiosVideoPrivate->LegacyBios, 0x10, &Regs);\r
3253}\r
3254\r
3255/**\r
3256 The user Entry Point for module UefiBiosVideo. The user code starts with this function.\r
3257\r
3258 @param[in] ImageHandle The firmware allocated handle for the EFI image.\r
3259 @param[in] SystemTable A pointer to the EFI System Table.\r
3260\r
3261 @retval EFI_SUCCESS The entry point is executed successfully.\r
3262 @retval other Some error occurs when executing this entry point.\r
3263\r
3264**/\r
3265EFI_STATUS\r
3266EFIAPI\r
3267BiosVideoEntryPoint(\r
3268 IN EFI_HANDLE ImageHandle,\r
3269 IN EFI_SYSTEM_TABLE *SystemTable\r
3270 )\r
3271{\r
3272 EFI_STATUS Status;\r
3273\r
3274 //\r
3275 // Install driver model protocol(s).\r
3276 //\r
3277 Status = EfiLibInstallDriverBindingComponentName2 (\r
3278 ImageHandle,\r
3279 SystemTable,\r
3280 &gBiosVideoDriverBinding,\r
3281 ImageHandle,\r
3282 &gBiosVideoComponentName,\r
3283 &gBiosVideoComponentName2\r
3284 );\r
3285 ASSERT_EFI_ERROR (Status);\r
3286\r
3287 //\r
3288 // Install Legacy BIOS GUID to mark this driver as a BIOS Thunk Driver\r
3289 //\r
3290 return gBS->InstallMultipleProtocolInterfaces (\r
3291 &ImageHandle,\r
3292 &gEfiLegacyBiosGuid,\r
3293 NULL,\r
3294 NULL\r
3295 );\r
3296}\r
3297\r
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