2 This driver is a sample implementation of the Graphics Output Protocol for
3 the QEMU (Cirrus Logic 5446) video controller.
5 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 #include <IndustryStandard/Acpi.h>
20 EFI_DRIVER_BINDING_PROTOCOL gQemuVideoDriverBinding
= {
21 QemuVideoControllerDriverSupported
,
22 QemuVideoControllerDriverStart
,
23 QemuVideoControllerDriverStop
,
29 QEMU_VIDEO_CARD gQemuVideoCardList
[] = {
31 CIRRUS_LOGIC_VENDOR_ID
,
32 CIRRUS_LOGIC_5430_DEVICE_ID
,
33 QEMU_VIDEO_CIRRUS_5430
,
36 CIRRUS_LOGIC_VENDOR_ID
,
37 CIRRUS_LOGIC_5430_ALTERNATE_DEVICE_ID
,
38 QEMU_VIDEO_CIRRUS_5430
,
41 CIRRUS_LOGIC_VENDOR_ID
,
42 CIRRUS_LOGIC_5446_DEVICE_ID
,
43 QEMU_VIDEO_CIRRUS_5446
,
48 QEMU_VIDEO_BOCHS_MMIO
,
58 QEMU_VIDEO_BOCHS_MMIO
,
65 static QEMU_VIDEO_CARD
*
73 while (gQemuVideoCardList
[Index
].VendorId
!= 0) {
74 if (gQemuVideoCardList
[Index
].VendorId
== VendorId
&&
75 gQemuVideoCardList
[Index
].DeviceId
== DeviceId
) {
76 return gQemuVideoCardList
+ Index
;
84 Check if this device is supported.
86 @param This The driver binding protocol.
87 @param Controller The controller handle to check.
88 @param RemainingDevicePath The remaining device path.
90 @retval EFI_SUCCESS The bus supports this controller.
91 @retval EFI_UNSUPPORTED This device isn't supported.
96 QemuVideoControllerDriverSupported (
97 IN EFI_DRIVER_BINDING_PROTOCOL
*This
,
98 IN EFI_HANDLE Controller
,
99 IN EFI_DEVICE_PATH_PROTOCOL
*RemainingDevicePath
103 EFI_PCI_IO_PROTOCOL
*PciIo
;
105 QEMU_VIDEO_CARD
*Card
;
108 // Open the PCI I/O Protocol
110 Status
= gBS
->OpenProtocol (
112 &gEfiPciIoProtocolGuid
,
114 This
->DriverBindingHandle
,
116 EFI_OPEN_PROTOCOL_BY_DRIVER
118 if (EFI_ERROR (Status
)) {
123 // Read the PCI Configuration Header from the PCI Device
125 Status
= PciIo
->Pci
.Read (
129 sizeof (Pci
) / sizeof (UINT32
),
132 if (EFI_ERROR (Status
)) {
136 Status
= EFI_UNSUPPORTED
;
137 Card
= QemuVideoDetect(Pci
.Hdr
.VendorId
, Pci
.Hdr
.DeviceId
);
139 DEBUG ((EFI_D_INFO
, "QemuVideo: %s detected\n", Card
->Name
));
140 Status
= EFI_SUCCESS
;
145 // Close the PCI I/O Protocol
149 &gEfiPciIoProtocolGuid
,
150 This
->DriverBindingHandle
,
158 Start to process the controller.
160 @param This The USB bus driver binding instance.
161 @param Controller The controller to check.
162 @param RemainingDevicePath The remaining device patch.
164 @retval EFI_SUCCESS The controller is controlled by the usb bus.
165 @retval EFI_ALREADY_STARTED The controller is already controlled by the usb
167 @retval EFI_OUT_OF_RESOURCES Failed to allocate resources.
172 QemuVideoControllerDriverStart (
173 IN EFI_DRIVER_BINDING_PROTOCOL
*This
,
174 IN EFI_HANDLE Controller
,
175 IN EFI_DEVICE_PATH_PROTOCOL
*RemainingDevicePath
180 QEMU_VIDEO_PRIVATE_DATA
*Private
;
182 EFI_DEVICE_PATH_PROTOCOL
*ParentDevicePath
;
183 ACPI_ADR_DEVICE_PATH AcpiDeviceNode
;
185 QEMU_VIDEO_CARD
*Card
;
186 EFI_PCI_IO_PROTOCOL
*ChildPciIo
;
188 OldTpl
= gBS
->RaiseTPL (TPL_CALLBACK
);
191 // Allocate Private context data for GOP inteface.
193 Private
= AllocateZeroPool (sizeof (QEMU_VIDEO_PRIVATE_DATA
));
194 if (Private
== NULL
) {
195 Status
= EFI_OUT_OF_RESOURCES
;
200 // Set up context record
202 Private
->Signature
= QEMU_VIDEO_PRIVATE_DATA_SIGNATURE
;
205 // Open PCI I/O Protocol
207 Status
= gBS
->OpenProtocol (
209 &gEfiPciIoProtocolGuid
,
210 (VOID
**) &Private
->PciIo
,
211 This
->DriverBindingHandle
,
213 EFI_OPEN_PROTOCOL_BY_DRIVER
215 if (EFI_ERROR (Status
)) {
220 // Read the PCI Configuration Header from the PCI Device
222 Status
= Private
->PciIo
->Pci
.Read (
226 sizeof (Pci
) / sizeof (UINT32
),
229 if (EFI_ERROR (Status
)) {
234 // Determine card variant.
236 Card
= QemuVideoDetect(Pci
.Hdr
.VendorId
, Pci
.Hdr
.DeviceId
);
238 Status
= EFI_DEVICE_ERROR
;
241 Private
->Variant
= Card
->Variant
;
244 // IsQxl is based on the detected Card->Variant, which at a later point might
245 // not match Private->Variant.
247 IsQxl
= (BOOLEAN
)(Card
->Variant
== QEMU_VIDEO_BOCHS
);
250 // Save original PCI attributes
252 Status
= Private
->PciIo
->Attributes (
254 EfiPciIoAttributeOperationGet
,
256 &Private
->OriginalPciAttributes
259 if (EFI_ERROR (Status
)) {
264 // Set new PCI attributes
266 Status
= Private
->PciIo
->Attributes (
268 EfiPciIoAttributeOperationEnable
,
269 EFI_PCI_DEVICE_ENABLE
| EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY
| EFI_PCI_IO_ATTRIBUTE_VGA_IO
,
272 if (EFI_ERROR (Status
)) {
277 // Check whenever the qemu stdvga mmio bar is present (qemu 1.3+).
279 if (Private
->Variant
== QEMU_VIDEO_BOCHS_MMIO
) {
280 EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR
*MmioDesc
;
282 Status
= Private
->PciIo
->GetBarAttributes (
288 if (EFI_ERROR (Status
) ||
289 MmioDesc
->ResType
!= ACPI_ADDRESS_SPACE_TYPE_MEM
) {
290 DEBUG ((EFI_D_INFO
, "QemuVideo: No mmio bar, fallback to port io\n"));
291 Private
->Variant
= QEMU_VIDEO_BOCHS
;
293 DEBUG ((EFI_D_INFO
, "QemuVideo: Using mmio bar @ 0x%lx\n",
294 MmioDesc
->AddrRangeMin
));
297 if (!EFI_ERROR (Status
)) {
303 // Check if accessing the bochs interface works.
305 if (Private
->Variant
== QEMU_VIDEO_BOCHS_MMIO
||
306 Private
->Variant
== QEMU_VIDEO_BOCHS
) {
308 BochsId
= BochsRead(Private
, VBE_DISPI_INDEX_ID
);
309 if ((BochsId
& 0xFFF0) != VBE_DISPI_ID0
) {
310 DEBUG ((EFI_D_INFO
, "QemuVideo: BochsID mismatch (got 0x%x)\n", BochsId
));
311 Status
= EFI_DEVICE_ERROR
;
312 goto RestoreAttributes
;
317 // Get ParentDevicePath
319 Status
= gBS
->HandleProtocol (
321 &gEfiDevicePathProtocolGuid
,
322 (VOID
**) &ParentDevicePath
324 if (EFI_ERROR (Status
)) {
325 goto RestoreAttributes
;
329 // Set Gop Device Path
331 ZeroMem (&AcpiDeviceNode
, sizeof (ACPI_ADR_DEVICE_PATH
));
332 AcpiDeviceNode
.Header
.Type
= ACPI_DEVICE_PATH
;
333 AcpiDeviceNode
.Header
.SubType
= ACPI_ADR_DP
;
334 AcpiDeviceNode
.ADR
= ACPI_DISPLAY_ADR (1, 0, 0, 1, 0, ACPI_ADR_DISPLAY_TYPE_VGA
, 0, 0);
335 SetDevicePathNodeLength (&AcpiDeviceNode
.Header
, sizeof (ACPI_ADR_DEVICE_PATH
));
337 Private
->GopDevicePath
= AppendDevicePathNode (
339 (EFI_DEVICE_PATH_PROTOCOL
*) &AcpiDeviceNode
341 if (Private
->GopDevicePath
== NULL
) {
342 Status
= EFI_OUT_OF_RESOURCES
;
343 goto RestoreAttributes
;
347 // Create new child handle and install the device path protocol on it.
349 Status
= gBS
->InstallMultipleProtocolInterfaces (
351 &gEfiDevicePathProtocolGuid
,
352 Private
->GopDevicePath
,
355 if (EFI_ERROR (Status
)) {
356 goto FreeGopDevicePath
;
360 // Construct video mode buffer
362 switch (Private
->Variant
) {
363 case QEMU_VIDEO_CIRRUS_5430
:
364 case QEMU_VIDEO_CIRRUS_5446
:
365 Status
= QemuVideoCirrusModeSetup (Private
);
367 case QEMU_VIDEO_BOCHS_MMIO
:
368 case QEMU_VIDEO_BOCHS
:
369 Status
= QemuVideoBochsModeSetup (Private
, IsQxl
);
373 Status
= EFI_DEVICE_ERROR
;
376 if (EFI_ERROR (Status
)) {
377 goto UninstallGopDevicePath
;
381 // Start the GOP software stack.
383 Status
= QemuVideoGraphicsOutputConstructor (Private
);
384 if (EFI_ERROR (Status
)) {
388 Status
= gBS
->InstallMultipleProtocolInterfaces (
390 &gEfiGraphicsOutputProtocolGuid
,
391 &Private
->GraphicsOutput
,
394 if (EFI_ERROR (Status
)) {
395 goto DestructQemuVideoGraphics
;
399 // Reference parent handle from child handle.
401 Status
= gBS
->OpenProtocol (
403 &gEfiPciIoProtocolGuid
,
404 (VOID
**) &ChildPciIo
,
405 This
->DriverBindingHandle
,
407 EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
409 if (EFI_ERROR (Status
)) {
413 #if defined MDE_CPU_IA32 || defined MDE_CPU_X64
414 if (Private
->Variant
== QEMU_VIDEO_BOCHS_MMIO
||
415 Private
->Variant
== QEMU_VIDEO_BOCHS
) {
416 InstallVbeShim (Card
->Name
, Private
->GraphicsOutput
.Mode
->FrameBufferBase
);
420 gBS
->RestoreTPL (OldTpl
);
424 gBS
->UninstallProtocolInterface (Private
->Handle
,
425 &gEfiGraphicsOutputProtocolGuid
, &Private
->GraphicsOutput
);
427 DestructQemuVideoGraphics
:
428 QemuVideoGraphicsOutputDestructor (Private
);
431 FreePool (Private
->ModeData
);
433 UninstallGopDevicePath
:
434 gBS
->UninstallProtocolInterface (Private
->Handle
,
435 &gEfiDevicePathProtocolGuid
, Private
->GopDevicePath
);
438 FreePool (Private
->GopDevicePath
);
441 Private
->PciIo
->Attributes (Private
->PciIo
, EfiPciIoAttributeOperationSet
,
442 Private
->OriginalPciAttributes
, NULL
);
445 gBS
->CloseProtocol (Controller
, &gEfiPciIoProtocolGuid
,
446 This
->DriverBindingHandle
, Controller
);
452 gBS
->RestoreTPL (OldTpl
);
460 @param This The USB bus driver binding protocol.
461 @param Controller The controller to release.
462 @param NumberOfChildren The number of children of this device that
463 opened the controller BY_CHILD.
464 @param ChildHandleBuffer The array of child handle.
466 @retval EFI_SUCCESS The controller or children are stopped.
467 @retval EFI_DEVICE_ERROR Failed to stop the driver.
472 QemuVideoControllerDriverStop (
473 IN EFI_DRIVER_BINDING_PROTOCOL
*This
,
474 IN EFI_HANDLE Controller
,
475 IN UINTN NumberOfChildren
,
476 IN EFI_HANDLE
*ChildHandleBuffer
479 EFI_GRAPHICS_OUTPUT_PROTOCOL
*GraphicsOutput
;
482 QEMU_VIDEO_PRIVATE_DATA
*Private
;
484 if (NumberOfChildren
== 0) {
486 // Close the PCI I/O Protocol
490 &gEfiPciIoProtocolGuid
,
491 This
->DriverBindingHandle
,
498 // free all resources for whose access we need the child handle, because the
499 // child handle is going away
501 ASSERT (NumberOfChildren
== 1);
502 Status
= gBS
->OpenProtocol (
503 ChildHandleBuffer
[0],
504 &gEfiGraphicsOutputProtocolGuid
,
505 (VOID
**) &GraphicsOutput
,
506 This
->DriverBindingHandle
,
508 EFI_OPEN_PROTOCOL_GET_PROTOCOL
510 if (EFI_ERROR (Status
)) {
515 // Get our private context information
517 Private
= QEMU_VIDEO_PRIVATE_DATA_FROM_GRAPHICS_OUTPUT_THIS (GraphicsOutput
);
518 ASSERT (Private
->Handle
== ChildHandleBuffer
[0]);
520 QemuVideoGraphicsOutputDestructor (Private
);
522 // Remove the GOP protocol interface from the system
524 Status
= gBS
->UninstallMultipleProtocolInterfaces (
526 &gEfiGraphicsOutputProtocolGuid
,
527 &Private
->GraphicsOutput
,
531 if (EFI_ERROR (Status
)) {
536 // Restore original PCI attributes
538 Private
->PciIo
->Attributes (
540 EfiPciIoAttributeOperationSet
,
541 Private
->OriginalPciAttributes
,
547 &gEfiPciIoProtocolGuid
,
548 This
->DriverBindingHandle
,
552 FreePool (Private
->ModeData
);
553 gBS
->UninstallProtocolInterface (Private
->Handle
,
554 &gEfiDevicePathProtocolGuid
, Private
->GopDevicePath
);
555 FreePool (Private
->GopDevicePath
);
558 // Free our instance data
560 gBS
->FreePool (Private
);
566 TODO: Add function description
568 @param Private TODO: add argument description
569 @param Address TODO: add argument description
570 @param Data TODO: add argument description
572 TODO: add return values
577 QEMU_VIDEO_PRIVATE_DATA
*Private
,
582 Private
->PciIo
->Io
.Write (
585 EFI_PCI_IO_PASS_THROUGH_BAR
,
593 TODO: Add function description
595 @param Private TODO: add argument description
596 @param Address TODO: add argument description
597 @param Data TODO: add argument description
599 TODO: add return values
604 QEMU_VIDEO_PRIVATE_DATA
*Private
,
609 Private
->PciIo
->Io
.Write (
612 EFI_PCI_IO_PASS_THROUGH_BAR
,
620 TODO: Add function description
622 @param Private TODO: add argument description
623 @param Address TODO: add argument description
625 TODO: add return values
630 QEMU_VIDEO_PRIVATE_DATA
*Private
,
636 Private
->PciIo
->Io
.Read (
639 EFI_PCI_IO_PASS_THROUGH_BAR
,
648 TODO: Add function description
650 @param Private TODO: add argument description
651 @param Address TODO: add argument description
653 TODO: add return values
658 QEMU_VIDEO_PRIVATE_DATA
*Private
,
664 Private
->PciIo
->Io
.Read (
667 EFI_PCI_IO_PASS_THROUGH_BAR
,
676 TODO: Add function description
678 @param Private TODO: add argument description
679 @param Index TODO: add argument description
680 @param Red TODO: add argument description
681 @param Green TODO: add argument description
682 @param Blue TODO: add argument description
684 TODO: add return values
689 QEMU_VIDEO_PRIVATE_DATA
*Private
,
696 VgaOutb (Private
, PALETTE_INDEX_REGISTER
, (UINT8
) Index
);
697 VgaOutb (Private
, PALETTE_DATA_REGISTER
, (UINT8
) (Red
>> 2));
698 VgaOutb (Private
, PALETTE_DATA_REGISTER
, (UINT8
) (Green
>> 2));
699 VgaOutb (Private
, PALETTE_DATA_REGISTER
, (UINT8
) (Blue
>> 2));
703 TODO: Add function description
705 @param Private TODO: add argument description
707 TODO: add return values
712 QEMU_VIDEO_PRIVATE_DATA
*Private
721 for (RedIndex
= 0; RedIndex
< 8; RedIndex
++) {
722 for (GreenIndex
= 0; GreenIndex
< 8; GreenIndex
++) {
723 for (BlueIndex
= 0; BlueIndex
< 4; BlueIndex
++) {
724 SetPaletteColor (Private
, Index
, (UINT8
) (RedIndex
<< 5), (UINT8
) (GreenIndex
<< 5), (UINT8
) (BlueIndex
<< 6));
732 TODO: Add function description
734 @param Private TODO: add argument description
736 TODO: add return values
741 QEMU_VIDEO_PRIVATE_DATA
*Private
747 Private
->PciIo
->Mem
.Write (
749 EfiPciIoWidthFillUint32
,
758 TODO: Add function description
760 @param Private TODO: add argument description
762 TODO: add return values
767 QEMU_VIDEO_PRIVATE_DATA
*Private
,
775 TODO: Add function description
777 @param Private TODO: add argument description
778 @param ModeData TODO: add argument description
780 TODO: add return values
784 InitializeCirrusGraphicsMode (
785 QEMU_VIDEO_PRIVATE_DATA
*Private
,
786 QEMU_VIDEO_CIRRUS_MODES
*ModeData
792 outw (Private
, SEQ_ADDRESS_REGISTER
, 0x1206);
793 outw (Private
, SEQ_ADDRESS_REGISTER
, 0x0012);
795 for (Index
= 0; Index
< 15; Index
++) {
796 outw (Private
, SEQ_ADDRESS_REGISTER
, ModeData
->SeqSettings
[Index
]);
799 if (Private
->Variant
== QEMU_VIDEO_CIRRUS_5430
) {
800 outb (Private
, SEQ_ADDRESS_REGISTER
, 0x0f);
801 Byte
= (UINT8
) ((inb (Private
, SEQ_DATA_REGISTER
) & 0xc7) ^ 0x30);
802 outb (Private
, SEQ_DATA_REGISTER
, Byte
);
805 outb (Private
, MISC_OUTPUT_REGISTER
, ModeData
->MiscSetting
);
806 outw (Private
, GRAPH_ADDRESS_REGISTER
, 0x0506);
807 outw (Private
, SEQ_ADDRESS_REGISTER
, 0x0300);
808 outw (Private
, CRTC_ADDRESS_REGISTER
, 0x2011);
810 for (Index
= 0; Index
< 28; Index
++) {
811 outw (Private
, CRTC_ADDRESS_REGISTER
, (UINT16
) ((ModeData
->CrtcSettings
[Index
] << 8) | Index
));
814 for (Index
= 0; Index
< 9; Index
++) {
815 outw (Private
, GRAPH_ADDRESS_REGISTER
, (UINT16
) ((GraphicsController
[Index
] << 8) | Index
));
818 inb (Private
, INPUT_STATUS_1_REGISTER
);
820 for (Index
= 0; Index
< 21; Index
++) {
821 outb (Private
, ATT_ADDRESS_REGISTER
, (UINT8
) Index
);
822 outb (Private
, ATT_ADDRESS_REGISTER
, AttributeController
[Index
]);
825 outb (Private
, ATT_ADDRESS_REGISTER
, 0x20);
827 outw (Private
, GRAPH_ADDRESS_REGISTER
, 0x0009);
828 outw (Private
, GRAPH_ADDRESS_REGISTER
, 0x000a);
829 outw (Private
, GRAPH_ADDRESS_REGISTER
, 0x000b);
830 outb (Private
, DAC_PIXEL_MASK_REGISTER
, 0xff);
832 SetDefaultPalette (Private
);
833 ClearScreen (Private
);
838 QEMU_VIDEO_PRIVATE_DATA
*Private
,
845 if (Private
->Variant
== QEMU_VIDEO_BOCHS_MMIO
) {
846 Status
= Private
->PciIo
->Mem
.Write (
854 ASSERT_EFI_ERROR (Status
);
856 outw (Private
, VBE_DISPI_IOPORT_INDEX
, Reg
);
857 outw (Private
, VBE_DISPI_IOPORT_DATA
, Data
);
863 QEMU_VIDEO_PRIVATE_DATA
*Private
,
870 if (Private
->Variant
== QEMU_VIDEO_BOCHS_MMIO
) {
871 Status
= Private
->PciIo
->Mem
.Read (
879 ASSERT_EFI_ERROR (Status
);
881 outw (Private
, VBE_DISPI_IOPORT_INDEX
, Reg
);
882 Data
= inw (Private
, VBE_DISPI_IOPORT_DATA
);
889 QEMU_VIDEO_PRIVATE_DATA
*Private
,
896 if (Private
->Variant
== QEMU_VIDEO_BOCHS_MMIO
) {
897 Status
= Private
->PciIo
->Mem
.Write (
905 ASSERT_EFI_ERROR (Status
);
907 outb (Private
, Reg
, Data
);
912 InitializeBochsGraphicsMode (
913 QEMU_VIDEO_PRIVATE_DATA
*Private
,
914 QEMU_VIDEO_BOCHS_MODES
*ModeData
917 DEBUG ((EFI_D_INFO
, "InitializeBochsGraphicsMode: %dx%d @ %d\n",
918 ModeData
->Width
, ModeData
->Height
, ModeData
->ColorDepth
));
921 VgaOutb (Private
, ATT_ADDRESS_REGISTER
, 0x20);
923 BochsWrite (Private
, VBE_DISPI_INDEX_ENABLE
, 0);
924 BochsWrite (Private
, VBE_DISPI_INDEX_BANK
, 0);
925 BochsWrite (Private
, VBE_DISPI_INDEX_X_OFFSET
, 0);
926 BochsWrite (Private
, VBE_DISPI_INDEX_Y_OFFSET
, 0);
928 BochsWrite (Private
, VBE_DISPI_INDEX_BPP
, (UINT16
) ModeData
->ColorDepth
);
929 BochsWrite (Private
, VBE_DISPI_INDEX_XRES
, (UINT16
) ModeData
->Width
);
930 BochsWrite (Private
, VBE_DISPI_INDEX_VIRT_WIDTH
, (UINT16
) ModeData
->Width
);
931 BochsWrite (Private
, VBE_DISPI_INDEX_YRES
, (UINT16
) ModeData
->Height
);
932 BochsWrite (Private
, VBE_DISPI_INDEX_VIRT_HEIGHT
, (UINT16
) ModeData
->Height
);
934 BochsWrite (Private
, VBE_DISPI_INDEX_ENABLE
,
935 VBE_DISPI_ENABLED
| VBE_DISPI_LFB_ENABLED
);
937 SetDefaultPalette (Private
);
938 ClearScreen (Private
);
943 InitializeQemuVideo (
944 IN EFI_HANDLE ImageHandle
,
945 IN EFI_SYSTEM_TABLE
*SystemTable
950 Status
= EfiLibInstallDriverBindingComponentName2 (
953 &gQemuVideoDriverBinding
,
955 &gQemuVideoComponentName
,
956 &gQemuVideoComponentName2
958 ASSERT_EFI_ERROR (Status
);
961 // Install EFI Driver Supported EFI Version Protocol required for
962 // EFI drivers that are on PCI and other plug in cards.
964 gQemuVideoDriverSupportedEfiVersion
.FirmwareVersion
= PcdGet32 (PcdDriverSupportedEfiVersion
);
965 Status
= gBS
->InstallMultipleProtocolInterfaces (
967 &gEfiDriverSupportedEfiVersionProtocolGuid
,
968 &gQemuVideoDriverSupportedEfiVersion
,
971 ASSERT_EFI_ERROR (Status
);