1 /** @file 2 Support for Graphics output spliter. 3 4 Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 14 **/ 15 16 #include "ConSplitter.h" 17 18 19 CHAR16 mCrLfString[3] = { CHAR_CARRIAGE_RETURN, CHAR_LINEFEED, CHAR_NULL }; 20 21 /** 22 Returns information for an available graphics mode that the graphics device 23 and the set of active video output devices supports. 24 25 @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance. 26 @param ModeNumber The mode number to return information on. 27 @param SizeOfInfo A pointer to the size, in bytes, of the Info buffer. 28 @param Info A pointer to callee allocated buffer that returns information about ModeNumber. 29 30 @retval EFI_SUCCESS Mode information returned. 31 @retval EFI_BUFFER_TOO_SMALL The Info buffer was too small. 32 @retval EFI_DEVICE_ERROR A hardware error occurred trying to retrieve the video mode. 33 @retval EFI_INVALID_PARAMETER One of the input args was NULL. 34 @retval EFI_OUT_OF_RESOURCES No resource available. 35 36 **/ 37 EFI_STATUS 38 EFIAPI 39 ConSplitterGraphicsOutputQueryMode ( 40 IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This, 41 IN UINT32 ModeNumber, 42 OUT UINTN *SizeOfInfo, 43 OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info 44 ) 45 { 46 TEXT_OUT_SPLITTER_PRIVATE_DATA *Private; 47 EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput; 48 EFI_STATUS Status; 49 UINTN Index; 50 51 if (This == NULL || Info == NULL || SizeOfInfo == NULL || ModeNumber >= This->Mode->MaxMode) { 52 return EFI_INVALID_PARAMETER; 53 } 54 55 // 56 // retrieve private data 57 // 58 Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This); 59 60 GraphicsOutput = NULL; 61 62 if (Private->CurrentNumberOfGraphicsOutput == 1) { 63 // 64 // Find the only one GraphicsOutput. 65 // 66 for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) { 67 GraphicsOutput = Private->TextOutList[Index].GraphicsOutput; 68 if (GraphicsOutput != NULL) { 69 break; 70 } 71 } 72 } 73 74 if (GraphicsOutput != NULL) { 75 // 76 // If only one physical GOP device exist, return its information. 77 // 78 Status = GraphicsOutput->QueryMode (GraphicsOutput, (UINT32) ModeNumber, SizeOfInfo, Info); 79 return Status; 80 } else { 81 // 82 // If 2 more phyiscal GOP device exist or GOP protocol does not exist, 83 // return GOP information (PixelFormat is PixelBltOnly) created in ConSplitterAddGraphicsOutputMode (). 84 // 85 *Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION)); 86 if (*Info == NULL) { 87 return EFI_OUT_OF_RESOURCES; 88 } 89 *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION); 90 CopyMem (*Info, &Private->GraphicsOutputModeBuffer[ModeNumber], *SizeOfInfo); 91 } 92 93 return EFI_SUCCESS; 94 } 95 96 97 /** 98 Set the video device into the specified mode and clears the visible portions of 99 the output display to black. 100 101 @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance. 102 @param ModeNumber Abstraction that defines the current video mode. 103 104 @retval EFI_SUCCESS The graphics mode specified by ModeNumber was selected. 105 @retval EFI_DEVICE_ERROR The device had an error and could not complete the request. 106 @retval EFI_UNSUPPORTED ModeNumber is not supported by this device. 107 @retval EFI_OUT_OF_RESOURCES No resource available. 108 109 **/ 110 EFI_STATUS 111 EFIAPI 112 ConSplitterGraphicsOutputSetMode ( 113 IN EFI_GRAPHICS_OUTPUT_PROTOCOL * This, 114 IN UINT32 ModeNumber 115 ) 116 { 117 EFI_STATUS Status; 118 TEXT_OUT_SPLITTER_PRIVATE_DATA *Private; 119 UINTN Index; 120 EFI_STATUS ReturnStatus; 121 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Mode; 122 EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput; 123 EFI_GRAPHICS_OUTPUT_PROTOCOL *PhysicalGraphicsOutput; 124 UINTN NumberIndex; 125 UINTN SizeOfInfo; 126 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info; 127 EFI_UGA_DRAW_PROTOCOL *UgaDraw; 128 129 if (ModeNumber >= This->Mode->MaxMode) { 130 return EFI_UNSUPPORTED; 131 } 132 133 Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This); 134 Mode = &Private->GraphicsOutputModeBuffer[ModeNumber]; 135 136 ReturnStatus = EFI_SUCCESS; 137 GraphicsOutput = NULL; 138 PhysicalGraphicsOutput = NULL; 139 // 140 // return the worst status met 141 // 142 for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) { 143 GraphicsOutput = Private->TextOutList[Index].GraphicsOutput; 144 if (GraphicsOutput != NULL) { 145 PhysicalGraphicsOutput = GraphicsOutput; 146 // 147 // Find corresponding ModeNumber of this GraphicsOutput instance 148 // 149 for (NumberIndex = 0; NumberIndex < GraphicsOutput->Mode->MaxMode; NumberIndex ++) { 150 Status = GraphicsOutput->QueryMode (GraphicsOutput, (UINT32) NumberIndex, &SizeOfInfo, &Info); 151 if (EFI_ERROR (Status)) { 152 return Status; 153 } 154 if ((Info->HorizontalResolution == Mode->HorizontalResolution) && (Info->VerticalResolution == Mode->VerticalResolution)) { 155 FreePool (Info); 156 break; 157 } 158 FreePool (Info); 159 } 160 161 Status = GraphicsOutput->SetMode (GraphicsOutput, (UINT32) NumberIndex); 162 if (EFI_ERROR (Status)) { 163 ReturnStatus = Status; 164 } 165 } else if (FeaturePcdGet (PcdUgaConsumeSupport)) { 166 UgaDraw = Private->TextOutList[Index].UgaDraw; 167 if (UgaDraw != NULL) { 168 Status = UgaDraw->SetMode ( 169 UgaDraw, 170 Mode->HorizontalResolution, 171 Mode->VerticalResolution, 172 32, 173 60 174 ); 175 if (EFI_ERROR (Status)) { 176 ReturnStatus = Status; 177 } 178 } 179 } 180 } 181 182 This->Mode->Mode = ModeNumber; 183 184 if ((Private->CurrentNumberOfGraphicsOutput == 1) && (PhysicalGraphicsOutput != NULL)) { 185 // 186 // If only one physical GOP device exist, copy physical information to consplitter. 187 // 188 CopyMem (This->Mode->Info, PhysicalGraphicsOutput->Mode->Info, PhysicalGraphicsOutput->Mode->SizeOfInfo); 189 This->Mode->SizeOfInfo = PhysicalGraphicsOutput->Mode->SizeOfInfo; 190 This->Mode->FrameBufferBase = PhysicalGraphicsOutput->Mode->FrameBufferBase; 191 This->Mode->FrameBufferSize = PhysicalGraphicsOutput->Mode->FrameBufferSize; 192 } else { 193 // 194 // If 2 more phyiscal GOP device exist or GOP protocol does not exist, 195 // return GOP information (PixelFormat is PixelBltOnly) created in ConSplitterAddGraphicsOutputMode (). 196 // 197 CopyMem (This->Mode->Info, &Private->GraphicsOutputModeBuffer[ModeNumber], This->Mode->SizeOfInfo); 198 } 199 200 return ReturnStatus; 201 } 202 203 204 205 /** 206 The following table defines actions for BltOperations. 207 208 EfiBltVideoFill - Write data from the BltBuffer pixel (SourceX, SourceY) 209 directly to every pixel of the video display rectangle 210 (DestinationX, DestinationY) 211 (DestinationX + Width, DestinationY + Height). 212 Only one pixel will be used from the BltBuffer. Delta is NOT used. 213 EfiBltVideoToBltBuffer - Read data from the video display rectangle 214 (SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in 215 the BltBuffer rectangle (DestinationX, DestinationY ) 216 (DestinationX + Width, DestinationY + Height). If DestinationX or 217 DestinationY is not zero then Delta must be set to the length in bytes 218 of a row in the BltBuffer. 219 EfiBltBufferToVideo - Write data from the BltBuffer rectangle 220 (SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the 221 video display rectangle (DestinationX, DestinationY) 222 (DestinationX + Width, DestinationY + Height). If SourceX or SourceY is 223 not zero then Delta must be set to the length in bytes of a row in the 224 BltBuffer. 225 EfiBltVideoToVideo - Copy from the video display rectangle 226 (SourceX, SourceY) (SourceX + Width, SourceY + Height) . 227 to the video display rectangle (DestinationX, DestinationY) 228 (DestinationX + Width, DestinationY + Height). 229 The BltBuffer and Delta are not used in this mode. 230 231 @param This Protocol instance pointer. 232 @param BltBuffer Buffer containing data to blit into video buffer. 233 This buffer has a size of 234 Width*Height*sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL) 235 @param BltOperation Operation to perform on BlitBuffer and video 236 memory 237 @param SourceX X coordinate of source for the BltBuffer. 238 @param SourceY Y coordinate of source for the BltBuffer. 239 @param DestinationX X coordinate of destination for the BltBuffer. 240 @param DestinationY Y coordinate of destination for the BltBuffer. 241 @param Width Width of rectangle in BltBuffer in pixels. 242 @param Height Hight of rectangle in BltBuffer in pixels. 243 @param Delta OPTIONAL. 244 245 @retval EFI_SUCCESS The Blt operation completed. 246 @retval EFI_INVALID_PARAMETER BltOperation is not valid. 247 @retval EFI_DEVICE_ERROR A hardware error occured writting to the video 248 buffer. 249 250 **/ 251 EFI_STATUS 252 EFIAPI 253 ConSplitterGraphicsOutputBlt ( 254 IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This, 255 IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL 256 IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation, 257 IN UINTN SourceX, 258 IN UINTN SourceY, 259 IN UINTN DestinationX, 260 IN UINTN DestinationY, 261 IN UINTN Width, 262 IN UINTN Height, 263 IN UINTN Delta OPTIONAL 264 ) 265 { 266 EFI_STATUS Status; 267 EFI_STATUS ReturnStatus; 268 TEXT_OUT_SPLITTER_PRIVATE_DATA *Private; 269 UINTN Index; 270 EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput; 271 EFI_UGA_DRAW_PROTOCOL *UgaDraw; 272 273 if (This == NULL || ((UINTN) BltOperation) >= EfiGraphicsOutputBltOperationMax) { 274 return EFI_INVALID_PARAMETER; 275 } 276 277 Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This); 278 279 ReturnStatus = EFI_SUCCESS; 280 281 // 282 // return the worst status met 283 // 284 for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) { 285 GraphicsOutput = Private->TextOutList[Index].GraphicsOutput; 286 if (GraphicsOutput != NULL) { 287 Status = GraphicsOutput->Blt ( 288 GraphicsOutput, 289 BltBuffer, 290 BltOperation, 291 SourceX, 292 SourceY, 293 DestinationX, 294 DestinationY, 295 Width, 296 Height, 297 Delta 298 ); 299 if (EFI_ERROR (Status)) { 300 ReturnStatus = Status; 301 } else if (BltOperation == EfiBltVideoToBltBuffer) { 302 // 303 // Only need to read the data into buffer one time 304 // 305 return EFI_SUCCESS; 306 } 307 } 308 309 UgaDraw = Private->TextOutList[Index].UgaDraw; 310 if (UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) { 311 Status = UgaDraw->Blt ( 312 UgaDraw, 313 (EFI_UGA_PIXEL *) BltBuffer, 314 (EFI_UGA_BLT_OPERATION) BltOperation, 315 SourceX, 316 SourceY, 317 DestinationX, 318 DestinationY, 319 Width, 320 Height, 321 Delta 322 ); 323 if (EFI_ERROR (Status)) { 324 ReturnStatus = Status; 325 } else if (BltOperation == EfiBltVideoToBltBuffer) { 326 // 327 // Only need to read the data into buffer one time 328 // 329 return EFI_SUCCESS; 330 } 331 } 332 } 333 334 return ReturnStatus; 335 } 336 337 /** 338 Return the current video mode information. 339 340 @param This The EFI_UGA_DRAW_PROTOCOL instance. 341 @param HorizontalResolution The size of video screen in pixels in the X dimension. 342 @param VerticalResolution The size of video screen in pixels in the Y dimension. 343 @param ColorDepth Number of bits per pixel, currently defined to be 32. 344 @param RefreshRate The refresh rate of the monitor in Hertz. 345 346 @retval EFI_SUCCESS Mode information returned. 347 @retval EFI_NOT_STARTED Video display is not initialized. Call SetMode () 348 @retval EFI_INVALID_PARAMETER One of the input args was NULL. 349 350 **/ 351 EFI_STATUS 352 EFIAPI 353 ConSplitterUgaDrawGetMode ( 354 IN EFI_UGA_DRAW_PROTOCOL *This, 355 OUT UINT32 *HorizontalResolution, 356 OUT UINT32 *VerticalResolution, 357 OUT UINT32 *ColorDepth, 358 OUT UINT32 *RefreshRate 359 ) 360 { 361 TEXT_OUT_SPLITTER_PRIVATE_DATA *Private; 362 363 if ((HorizontalResolution == NULL) || 364 (VerticalResolution == NULL) || 365 (RefreshRate == NULL) || 366 (ColorDepth == NULL)) { 367 return EFI_INVALID_PARAMETER; 368 } 369 // 370 // retrieve private data 371 // 372 Private = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This); 373 374 *HorizontalResolution = Private->UgaHorizontalResolution; 375 *VerticalResolution = Private->UgaVerticalResolution; 376 *ColorDepth = Private->UgaColorDepth; 377 *RefreshRate = Private->UgaRefreshRate; 378 379 return EFI_SUCCESS; 380 } 381 382 383 /** 384 Set the current video mode information. 385 386 @param This The EFI_UGA_DRAW_PROTOCOL instance. 387 @param HorizontalResolution The size of video screen in pixels in the X dimension. 388 @param VerticalResolution The size of video screen in pixels in the Y dimension. 389 @param ColorDepth Number of bits per pixel, currently defined to be 32. 390 @param RefreshRate The refresh rate of the monitor in Hertz. 391 392 @retval EFI_SUCCESS Mode information returned. 393 @retval EFI_NOT_STARTED Video display is not initialized. Call SetMode () 394 @retval EFI_OUT_OF_RESOURCES Out of resources. 395 396 **/ 397 EFI_STATUS 398 EFIAPI 399 ConSplitterUgaDrawSetMode ( 400 IN EFI_UGA_DRAW_PROTOCOL *This, 401 IN UINT32 HorizontalResolution, 402 IN UINT32 VerticalResolution, 403 IN UINT32 ColorDepth, 404 IN UINT32 RefreshRate 405 ) 406 { 407 EFI_STATUS Status; 408 TEXT_OUT_SPLITTER_PRIVATE_DATA *Private; 409 UINTN Index; 410 EFI_STATUS ReturnStatus; 411 EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput; 412 UINTN NumberIndex; 413 UINTN SizeOfInfo; 414 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info; 415 EFI_UGA_DRAW_PROTOCOL *UgaDraw; 416 417 Private = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This); 418 419 ReturnStatus = EFI_SUCCESS; 420 421 // 422 // Update the Mode data 423 // 424 Private->UgaHorizontalResolution = HorizontalResolution; 425 Private->UgaVerticalResolution = VerticalResolution; 426 Private->UgaColorDepth = ColorDepth; 427 Private->UgaRefreshRate = RefreshRate; 428 429 // 430 // return the worst status met 431 // 432 for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) { 433 434 GraphicsOutput = Private->TextOutList[Index].GraphicsOutput; 435 if (GraphicsOutput != NULL) { 436 // 437 // Find corresponding ModeNumber of this GraphicsOutput instance 438 // 439 for (NumberIndex = 0; NumberIndex < GraphicsOutput->Mode->MaxMode; NumberIndex ++) { 440 Status = GraphicsOutput->QueryMode (GraphicsOutput, (UINT32) NumberIndex, &SizeOfInfo, &Info); 441 if (EFI_ERROR (Status)) { 442 return Status; 443 } 444 if ((Info->HorizontalResolution == HorizontalResolution) && (Info->VerticalResolution == VerticalResolution)) { 445 FreePool (Info); 446 break; 447 } 448 FreePool (Info); 449 } 450 451 Status = GraphicsOutput->SetMode (GraphicsOutput, (UINT32) NumberIndex); 452 if (EFI_ERROR (Status)) { 453 ReturnStatus = Status; 454 } 455 } else if (FeaturePcdGet (PcdUgaConsumeSupport)){ 456 UgaDraw = Private->TextOutList[Index].UgaDraw; 457 if (UgaDraw != NULL) { 458 Status = UgaDraw->SetMode ( 459 UgaDraw, 460 HorizontalResolution, 461 VerticalResolution, 462 ColorDepth, 463 RefreshRate 464 ); 465 if (EFI_ERROR (Status)) { 466 ReturnStatus = Status; 467 } 468 } 469 } 470 } 471 472 return ReturnStatus; 473 } 474 475 476 /** 477 Blt a rectangle of pixels on the graphics screen. 478 479 The following table defines actions for BltOperations. 480 481 EfiUgaVideoFill: 482 Write data from the BltBuffer pixel (SourceX, SourceY) 483 directly to every pixel of the video display rectangle 484 (DestinationX, DestinationY) 485 (DestinationX + Width, DestinationY + Height). 486 Only one pixel will be used from the BltBuffer. Delta is NOT used. 487 EfiUgaVideoToBltBuffer: 488 Read data from the video display rectangle 489 (SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in 490 the BltBuffer rectangle (DestinationX, DestinationY ) 491 (DestinationX + Width, DestinationY + Height). If DestinationX or 492 DestinationY is not zero then Delta must be set to the length in bytes 493 of a row in the BltBuffer. 494 EfiUgaBltBufferToVideo: 495 Write data from the BltBuffer rectangle 496 (SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the 497 video display rectangle (DestinationX, DestinationY) 498 (DestinationX + Width, DestinationY + Height). If SourceX or SourceY is 499 not zero then Delta must be set to the length in bytes of a row in the 500 BltBuffer. 501 EfiUgaVideoToVideo: 502 Copy from the video display rectangle 503 (SourceX, SourceY) (SourceX + Width, SourceY + Height) . 504 to the video display rectangle (DestinationX, DestinationY) 505 (DestinationX + Width, DestinationY + Height). 506 The BltBuffer and Delta are not used in this mode. 507 508 @param This Protocol instance pointer. 509 @param BltBuffer Buffer containing data to blit into video buffer. This 510 buffer has a size of Width*Height*sizeof(EFI_UGA_PIXEL) 511 @param BltOperation Operation to perform on BlitBuffer and video memory 512 @param SourceX X coordinate of source for the BltBuffer. 513 @param SourceY Y coordinate of source for the BltBuffer. 514 @param DestinationX X coordinate of destination for the BltBuffer. 515 @param DestinationY Y coordinate of destination for the BltBuffer. 516 @param Width Width of rectangle in BltBuffer in pixels. 517 @param Height Hight of rectangle in BltBuffer in pixels. 518 @param Delta OPTIONAL 519 520 @retval EFI_SUCCESS The Blt operation completed. 521 @retval EFI_INVALID_PARAMETER BltOperation is not valid. 522 @retval EFI_DEVICE_ERROR A hardware error occured writting to the video buffer. 523 524 **/ 525 EFI_STATUS 526 EFIAPI 527 ConSplitterUgaDrawBlt ( 528 IN EFI_UGA_DRAW_PROTOCOL *This, 529 IN EFI_UGA_PIXEL *BltBuffer, OPTIONAL 530 IN EFI_UGA_BLT_OPERATION BltOperation, 531 IN UINTN SourceX, 532 IN UINTN SourceY, 533 IN UINTN DestinationX, 534 IN UINTN DestinationY, 535 IN UINTN Width, 536 IN UINTN Height, 537 IN UINTN Delta OPTIONAL 538 ) 539 { 540 EFI_STATUS Status; 541 TEXT_OUT_SPLITTER_PRIVATE_DATA *Private; 542 UINTN Index; 543 EFI_STATUS ReturnStatus; 544 EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput; 545 546 Private = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This); 547 548 ReturnStatus = EFI_SUCCESS; 549 // 550 // return the worst status met 551 // 552 for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) { 553 GraphicsOutput = Private->TextOutList[Index].GraphicsOutput; 554 if (GraphicsOutput != NULL) { 555 Status = GraphicsOutput->Blt ( 556 GraphicsOutput, 557 (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) BltBuffer, 558 (EFI_GRAPHICS_OUTPUT_BLT_OPERATION) BltOperation, 559 SourceX, 560 SourceY, 561 DestinationX, 562 DestinationY, 563 Width, 564 Height, 565 Delta 566 ); 567 if (EFI_ERROR (Status)) { 568 ReturnStatus = Status; 569 } else if (BltOperation == EfiUgaVideoToBltBuffer) { 570 // 571 // Only need to read the data into buffer one time 572 // 573 return EFI_SUCCESS; 574 } 575 } 576 577 if (Private->TextOutList[Index].UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) { 578 Status = Private->TextOutList[Index].UgaDraw->Blt ( 579 Private->TextOutList[Index].UgaDraw, 580 BltBuffer, 581 BltOperation, 582 SourceX, 583 SourceY, 584 DestinationX, 585 DestinationY, 586 Width, 587 Height, 588 Delta 589 ); 590 if (EFI_ERROR (Status)) { 591 ReturnStatus = Status; 592 } else if (BltOperation == EfiUgaVideoToBltBuffer) { 593 // 594 // Only need to read the data into buffer one time 595 // 596 return EFI_SUCCESS; 597 } 598 } 599 } 600 601 return ReturnStatus; 602 } 603 604 /** 605 Sets the output device(s) to a specified mode. 606 607 @param Private Text Out Splitter pointer. 608 @param ModeNumber The mode number to set. 609 610 **/ 611 VOID 612 TextOutSetMode ( 613 IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private, 614 IN UINTN ModeNumber 615 ) 616 { 617 // 618 // No need to do extra check here as whether (Column, Row) is valid has 619 // been checked in ConSplitterTextOutSetCursorPosition. And (0, 0) should 620 // always be supported. 621 // 622 Private->TextOutMode.Mode = (INT32) ModeNumber; 623 Private->TextOutMode.CursorColumn = 0; 624 Private->TextOutMode.CursorRow = 0; 625 Private->TextOutMode.CursorVisible = TRUE; 626 627 return; 628 } 629
