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audk/OvmfPkg/QemuVideoDxe/Driver.c

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/** @file
This driver is a sample implementation of the Graphics Output Protocol for
the QEMU (Cirrus Logic 5446) video controller.
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "Qemu.h"
#include <IndustryStandard/Acpi.h>
EFI_DRIVER_BINDING_PROTOCOL gQemuVideoDriverBinding = {
QemuVideoControllerDriverSupported,
QemuVideoControllerDriverStart,
QemuVideoControllerDriverStop,
0x10,
NULL,
NULL
};
QEMU_VIDEO_CARD gQemuVideoCardList[] = {
{
CIRRUS_LOGIC_VENDOR_ID,
CIRRUS_LOGIC_5430_DEVICE_ID,
QEMU_VIDEO_CIRRUS_5430,
L"Cirrus 5430"
},{
CIRRUS_LOGIC_VENDOR_ID,
CIRRUS_LOGIC_5430_ALTERNATE_DEVICE_ID,
QEMU_VIDEO_CIRRUS_5430,
L"Cirrus 5430"
},{
CIRRUS_LOGIC_VENDOR_ID,
CIRRUS_LOGIC_5446_DEVICE_ID,
QEMU_VIDEO_CIRRUS_5446,
L"Cirrus 5446"
},{
0x1234,
0x1111,
QEMU_VIDEO_BOCHS_MMIO,
L"QEMU Standard VGA"
},{
0x1b36,
0x0100,
QEMU_VIDEO_BOCHS,
L"QEMU QXL VGA"
},{
0 /* end of list */
}
};
static QEMU_VIDEO_CARD*
QemuVideoDetect(
IN UINT16 VendorId,
IN UINT16 DeviceId
)
{
UINTN Index = 0;
while (gQemuVideoCardList[Index].VendorId != 0) {
if (gQemuVideoCardList[Index].VendorId == VendorId &&
gQemuVideoCardList[Index].DeviceId == DeviceId) {
return gQemuVideoCardList + Index;
}
Index++;
}
return NULL;
}
/**
Check if this device is supported.
@param This The driver binding protocol.
@param Controller The controller handle to check.
@param RemainingDevicePath The remaining device path.
@retval EFI_SUCCESS The bus supports this controller.
@retval EFI_UNSUPPORTED This device isn't supported.
**/
EFI_STATUS
EFIAPI
QemuVideoControllerDriverSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
PCI_TYPE00 Pci;
QEMU_VIDEO_CARD *Card;
//
// Open the PCI I/O Protocol
//
Status = gBS->OpenProtocol (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Read the PCI Configuration Header from the PCI Device
//
Status = PciIo->Pci.Read (
PciIo,
EfiPciIoWidthUint32,
0,
sizeof (Pci) / sizeof (UINT32),
&Pci
);
if (EFI_ERROR (Status)) {
goto Done;
}
Status = EFI_UNSUPPORTED;
Card = QemuVideoDetect(Pci.Hdr.VendorId, Pci.Hdr.DeviceId);
if (Card != NULL) {
DEBUG ((EFI_D_INFO, "QemuVideo: %s detected\n", Card->Name));
Status = EFI_SUCCESS;
}
Done:
//
// Close the PCI I/O Protocol
//
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
/**
Start to process the controller.
@param This The USB bus driver binding instance.
@param Controller The controller to check.
@param RemainingDevicePath The remaining device patch.
@retval EFI_SUCCESS The controller is controlled by the usb bus.
@retval EFI_ALREADY_STARTED The controller is already controlled by the usb
bus.
@retval EFI_OUT_OF_RESOURCES Failed to allocate resources.
**/
EFI_STATUS
EFIAPI
QemuVideoControllerDriverStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_TPL OldTpl;
EFI_STATUS Status;
QEMU_VIDEO_PRIVATE_DATA *Private;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
ACPI_ADR_DEVICE_PATH AcpiDeviceNode;
PCI_TYPE00 Pci;
QEMU_VIDEO_CARD *Card;
EFI_PCI_IO_PROTOCOL *ChildPciIo;
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
//
// Allocate Private context data for GOP inteface.
//
Private = AllocateZeroPool (sizeof (QEMU_VIDEO_PRIVATE_DATA));
if (Private == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto RestoreTpl;
}
//
// Set up context record
//
Private->Signature = QEMU_VIDEO_PRIVATE_DATA_SIGNATURE;
//
// Open PCI I/O Protocol
//
Status = gBS->OpenProtocol (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **) &Private->PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
goto FreePrivate;
}
//
// Read the PCI Configuration Header from the PCI Device
//
Status = Private->PciIo->Pci.Read (
Private->PciIo,
EfiPciIoWidthUint32,
0,
sizeof (Pci) / sizeof (UINT32),
&Pci
);
if (EFI_ERROR (Status)) {
goto ClosePciIo;
}
//
// Determine card variant.
//
Card = QemuVideoDetect(Pci.Hdr.VendorId, Pci.Hdr.DeviceId);
if (Card == NULL) {
Status = EFI_DEVICE_ERROR;
goto ClosePciIo;
}
Private->Variant = Card->Variant;
//
// Save original PCI attributes
//
Status = Private->PciIo->Attributes (
Private->PciIo,
EfiPciIoAttributeOperationGet,
0,
&Private->OriginalPciAttributes
);
if (EFI_ERROR (Status)) {
goto ClosePciIo;
}
//
// Set new PCI attributes
//
Status = Private->PciIo->Attributes (
Private->PciIo,
EfiPciIoAttributeOperationEnable,
EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | EFI_PCI_IO_ATTRIBUTE_VGA_IO,
NULL
);
if (EFI_ERROR (Status)) {
goto ClosePciIo;
}
//
// Check whenever the qemu stdvga mmio bar is present (qemu 1.3+).
//
if (Private->Variant == QEMU_VIDEO_BOCHS_MMIO) {
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *MmioDesc;
Status = Private->PciIo->GetBarAttributes (
Private->PciIo,
PCI_BAR_IDX2,
NULL,
(VOID**) &MmioDesc
);
if (EFI_ERROR (Status) ||
MmioDesc->ResType != ACPI_ADDRESS_SPACE_TYPE_MEM) {
DEBUG ((EFI_D_INFO, "QemuVideo: No mmio bar, fallback to port io\n"));
Private->Variant = QEMU_VIDEO_BOCHS;
} else {
DEBUG ((EFI_D_INFO, "QemuVideo: Using mmio bar @ 0x%lx\n",
MmioDesc->AddrRangeMin));
}
if (!EFI_ERROR (Status)) {
FreePool (MmioDesc);
}
}
//
// Check if accessing the bochs interface works.
//
if (Private->Variant == QEMU_VIDEO_BOCHS_MMIO ||
Private->Variant == QEMU_VIDEO_BOCHS) {
UINT16 BochsId;
BochsId = BochsRead(Private, VBE_DISPI_INDEX_ID);
if ((BochsId & 0xFFF0) != VBE_DISPI_ID0) {
DEBUG ((EFI_D_INFO, "QemuVideo: BochsID mismatch (got 0x%x)\n", BochsId));
Status = EFI_DEVICE_ERROR;
goto RestoreAttributes;
}
}
//
// Get ParentDevicePath
//
Status = gBS->HandleProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &ParentDevicePath
);
if (EFI_ERROR (Status)) {
goto RestoreAttributes;
}
//
// Set Gop Device Path
//
ZeroMem (&AcpiDeviceNode, sizeof (ACPI_ADR_DEVICE_PATH));
AcpiDeviceNode.Header.Type = ACPI_DEVICE_PATH;
AcpiDeviceNode.Header.SubType = ACPI_ADR_DP;
AcpiDeviceNode.ADR = ACPI_DISPLAY_ADR (1, 0, 0, 1, 0, ACPI_ADR_DISPLAY_TYPE_VGA, 0, 0);
SetDevicePathNodeLength (&AcpiDeviceNode.Header, sizeof (ACPI_ADR_DEVICE_PATH));
Private->GopDevicePath = AppendDevicePathNode (
ParentDevicePath,
(EFI_DEVICE_PATH_PROTOCOL *) &AcpiDeviceNode
);
if (Private->GopDevicePath == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto RestoreAttributes;
}
//
// Create new child handle and install the device path protocol on it.
//
Status = gBS->InstallMultipleProtocolInterfaces (
&Private->Handle,
&gEfiDevicePathProtocolGuid,
Private->GopDevicePath,
NULL
);
if (EFI_ERROR (Status)) {
goto FreeGopDevicePath;
}
//
// Construct video mode buffer
//
switch (Private->Variant) {
case QEMU_VIDEO_CIRRUS_5430:
case QEMU_VIDEO_CIRRUS_5446:
Status = QemuVideoCirrusModeSetup (Private);
break;
case QEMU_VIDEO_BOCHS_MMIO:
case QEMU_VIDEO_BOCHS:
Status = QemuVideoBochsModeSetup (Private);
break;
default:
ASSERT (FALSE);
Status = EFI_DEVICE_ERROR;
break;
}
if (EFI_ERROR (Status)) {
goto UninstallGopDevicePath;
}
//
// Start the GOP software stack.
//
Status = QemuVideoGraphicsOutputConstructor (Private);
if (EFI_ERROR (Status)) {
goto FreeModeData;
}
Status = gBS->InstallMultipleProtocolInterfaces (
&Private->Handle,
&gEfiGraphicsOutputProtocolGuid,
&Private->GraphicsOutput,
NULL
);
if (EFI_ERROR (Status)) {
goto DestructQemuVideoGraphics;
}
//
// Reference parent handle from child handle.
//
Status = gBS->OpenProtocol (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **) &ChildPciIo,
This->DriverBindingHandle,
Private->Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
if (EFI_ERROR (Status)) {
goto UninstallGop;
}
if (Private->Variant == QEMU_VIDEO_BOCHS_MMIO ||
Private->Variant == QEMU_VIDEO_BOCHS) {
InstallVbeShim (Card->Name, Private->GraphicsOutput.Mode->FrameBufferBase);
}
gBS->RestoreTPL (OldTpl);
return EFI_SUCCESS;
UninstallGop:
gBS->UninstallProtocolInterface (Private->Handle,
&gEfiGraphicsOutputProtocolGuid, &Private->GraphicsOutput);
DestructQemuVideoGraphics:
QemuVideoGraphicsOutputDestructor (Private);
FreeModeData:
FreePool (Private->ModeData);
UninstallGopDevicePath:
gBS->UninstallProtocolInterface (Private->Handle,
&gEfiDevicePathProtocolGuid, Private->GopDevicePath);
FreeGopDevicePath:
FreePool (Private->GopDevicePath);
RestoreAttributes:
Private->PciIo->Attributes (Private->PciIo, EfiPciIoAttributeOperationSet,
Private->OriginalPciAttributes, NULL);
ClosePciIo:
gBS->CloseProtocol (Controller, &gEfiPciIoProtocolGuid,
This->DriverBindingHandle, Controller);
FreePrivate:
FreePool (Private);
RestoreTpl:
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Stop this device
@param This The USB bus driver binding protocol.
@param Controller The controller to release.
@param NumberOfChildren The number of children of this device that
opened the controller BY_CHILD.
@param ChildHandleBuffer The array of child handle.
@retval EFI_SUCCESS The controller or children are stopped.
@retval EFI_DEVICE_ERROR Failed to stop the driver.
**/
EFI_STATUS
EFIAPI
QemuVideoControllerDriverStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;
EFI_STATUS Status;
QEMU_VIDEO_PRIVATE_DATA *Private;
if (NumberOfChildren == 0) {
//
// Close the PCI I/O Protocol
//
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_SUCCESS;
}
//
// free all resources for whose access we need the child handle, because the
// child handle is going away
//
ASSERT (NumberOfChildren == 1);
Status = gBS->OpenProtocol (
ChildHandleBuffer[0],
&gEfiGraphicsOutputProtocolGuid,
(VOID **) &GraphicsOutput,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Get our private context information
//
Private = QEMU_VIDEO_PRIVATE_DATA_FROM_GRAPHICS_OUTPUT_THIS (GraphicsOutput);
ASSERT (Private->Handle == ChildHandleBuffer[0]);
QemuVideoGraphicsOutputDestructor (Private);
//
// Remove the GOP protocol interface from the system
//
Status = gBS->UninstallMultipleProtocolInterfaces (
Private->Handle,
&gEfiGraphicsOutputProtocolGuid,
&Private->GraphicsOutput,
NULL
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Restore original PCI attributes
//
Private->PciIo->Attributes (
Private->PciIo,
EfiPciIoAttributeOperationSet,
Private->OriginalPciAttributes,
NULL
);
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Private->Handle
);
FreePool (Private->ModeData);
gBS->UninstallProtocolInterface (Private->Handle,
&gEfiDevicePathProtocolGuid, Private->GopDevicePath);
FreePool (Private->GopDevicePath);
//
// Free our instance data
//
gBS->FreePool (Private);
return EFI_SUCCESS;
}
/**
TODO: Add function description
@param Private TODO: add argument description
@param Address TODO: add argument description
@param Data TODO: add argument description
TODO: add return values
**/
VOID
outb (
QEMU_VIDEO_PRIVATE_DATA *Private,
UINTN Address,
UINT8 Data
)
{
Private->PciIo->Io.Write (
Private->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
Address,
1,
&Data
);
}
/**
TODO: Add function description
@param Private TODO: add argument description
@param Address TODO: add argument description
@param Data TODO: add argument description
TODO: add return values
**/
VOID
outw (
QEMU_VIDEO_PRIVATE_DATA *Private,
UINTN Address,
UINT16 Data
)
{
Private->PciIo->Io.Write (
Private->PciIo,
EfiPciIoWidthUint16,
EFI_PCI_IO_PASS_THROUGH_BAR,
Address,
1,
&Data
);
}
/**
TODO: Add function description
@param Private TODO: add argument description
@param Address TODO: add argument description
TODO: add return values
**/
UINT8
inb (
QEMU_VIDEO_PRIVATE_DATA *Private,
UINTN Address
)
{
UINT8 Data;
Private->PciIo->Io.Read (
Private->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
Address,
1,
&Data
);
return Data;
}
/**
TODO: Add function description
@param Private TODO: add argument description
@param Address TODO: add argument description
TODO: add return values
**/
UINT16
inw (
QEMU_VIDEO_PRIVATE_DATA *Private,
UINTN Address
)
{
UINT16 Data;
Private->PciIo->Io.Read (
Private->PciIo,
EfiPciIoWidthUint16,
EFI_PCI_IO_PASS_THROUGH_BAR,
Address,
1,
&Data
);
return Data;
}
/**
TODO: Add function description
@param Private TODO: add argument description
@param Index TODO: add argument description
@param Red TODO: add argument description
@param Green TODO: add argument description
@param Blue TODO: add argument description
TODO: add return values
**/
VOID
SetPaletteColor (
QEMU_VIDEO_PRIVATE_DATA *Private,
UINTN Index,
UINT8 Red,
UINT8 Green,
UINT8 Blue
)
{
VgaOutb (Private, PALETTE_INDEX_REGISTER, (UINT8) Index);
VgaOutb (Private, PALETTE_DATA_REGISTER, (UINT8) (Red >> 2));
VgaOutb (Private, PALETTE_DATA_REGISTER, (UINT8) (Green >> 2));
VgaOutb (Private, PALETTE_DATA_REGISTER, (UINT8) (Blue >> 2));
}
/**
TODO: Add function description
@param Private TODO: add argument description
TODO: add return values
**/
VOID
SetDefaultPalette (
QEMU_VIDEO_PRIVATE_DATA *Private
)
{
UINTN Index;
UINTN RedIndex;
UINTN GreenIndex;
UINTN BlueIndex;
Index = 0;
for (RedIndex = 0; RedIndex < 8; RedIndex++) {
for (GreenIndex = 0; GreenIndex < 8; GreenIndex++) {
for (BlueIndex = 0; BlueIndex < 4; BlueIndex++) {
SetPaletteColor (Private, Index, (UINT8) (RedIndex << 5), (UINT8) (GreenIndex << 5), (UINT8) (BlueIndex << 6));
Index++;
}
}
}
}
/**
TODO: Add function description
@param Private TODO: add argument description
TODO: add return values
**/
VOID
ClearScreen (
QEMU_VIDEO_PRIVATE_DATA *Private
)
{
UINT32 Color;
Color = 0;
Private->PciIo->Mem.Write (
Private->PciIo,
EfiPciIoWidthFillUint32,
0,
0,
0x400000 >> 2,
&Color
);
}
/**
TODO: Add function description
@param Private TODO: add argument description
TODO: add return values
**/
VOID
DrawLogo (
QEMU_VIDEO_PRIVATE_DATA *Private,
UINTN ScreenWidth,
UINTN ScreenHeight
)
{
}
/**
TODO: Add function description
@param Private TODO: add argument description
@param ModeData TODO: add argument description
TODO: add return values
**/
VOID
InitializeCirrusGraphicsMode (
QEMU_VIDEO_PRIVATE_DATA *Private,
QEMU_VIDEO_CIRRUS_MODES *ModeData
)
{
UINT8 Byte;
UINTN Index;
outw (Private, SEQ_ADDRESS_REGISTER, 0x1206);
outw (Private, SEQ_ADDRESS_REGISTER, 0x0012);
for (Index = 0; Index < 15; Index++) {
outw (Private, SEQ_ADDRESS_REGISTER, ModeData->SeqSettings[Index]);
}
if (Private->Variant == QEMU_VIDEO_CIRRUS_5430) {
outb (Private, SEQ_ADDRESS_REGISTER, 0x0f);
Byte = (UINT8) ((inb (Private, SEQ_DATA_REGISTER) & 0xc7) ^ 0x30);
outb (Private, SEQ_DATA_REGISTER, Byte);
}
outb (Private, MISC_OUTPUT_REGISTER, ModeData->MiscSetting);
outw (Private, GRAPH_ADDRESS_REGISTER, 0x0506);
outw (Private, SEQ_ADDRESS_REGISTER, 0x0300);
outw (Private, CRTC_ADDRESS_REGISTER, 0x2011);
for (Index = 0; Index < 28; Index++) {
outw (Private, CRTC_ADDRESS_REGISTER, (UINT16) ((ModeData->CrtcSettings[Index] << 8) | Index));
}
for (Index = 0; Index < 9; Index++) {
outw (Private, GRAPH_ADDRESS_REGISTER, (UINT16) ((GraphicsController[Index] << 8) | Index));
}
inb (Private, INPUT_STATUS_1_REGISTER);
for (Index = 0; Index < 21; Index++) {
outb (Private, ATT_ADDRESS_REGISTER, (UINT8) Index);
outb (Private, ATT_ADDRESS_REGISTER, AttributeController[Index]);
}
outb (Private, ATT_ADDRESS_REGISTER, 0x20);
outw (Private, GRAPH_ADDRESS_REGISTER, 0x0009);
outw (Private, GRAPH_ADDRESS_REGISTER, 0x000a);
outw (Private, GRAPH_ADDRESS_REGISTER, 0x000b);
outb (Private, DAC_PIXEL_MASK_REGISTER, 0xff);
SetDefaultPalette (Private);
ClearScreen (Private);
}
VOID
BochsWrite (
QEMU_VIDEO_PRIVATE_DATA *Private,
UINT16 Reg,
UINT16 Data
)
{
EFI_STATUS Status;
if (Private->Variant == QEMU_VIDEO_BOCHS_MMIO) {
Status = Private->PciIo->Mem.Write (
Private->PciIo,
EfiPciIoWidthUint16,
PCI_BAR_IDX2,
0x500 + (Reg << 1),
1,
&Data
);
ASSERT_EFI_ERROR (Status);
} else {
outw (Private, VBE_DISPI_IOPORT_INDEX, Reg);
outw (Private, VBE_DISPI_IOPORT_DATA, Data);
}
}
UINT16
BochsRead (
QEMU_VIDEO_PRIVATE_DATA *Private,
UINT16 Reg
)
{
EFI_STATUS Status;
UINT16 Data;
if (Private->Variant == QEMU_VIDEO_BOCHS_MMIO) {
Status = Private->PciIo->Mem.Read (
Private->PciIo,
EfiPciIoWidthUint16,
PCI_BAR_IDX2,
0x500 + (Reg << 1),
1,
&Data
);
ASSERT_EFI_ERROR (Status);
} else {
outw (Private, VBE_DISPI_IOPORT_INDEX, Reg);
Data = inw (Private, VBE_DISPI_IOPORT_DATA);
}
return Data;
}
VOID
VgaOutb (
QEMU_VIDEO_PRIVATE_DATA *Private,
UINTN Reg,
UINT8 Data
)
{
EFI_STATUS Status;
if (Private->Variant == QEMU_VIDEO_BOCHS_MMIO) {
Status = Private->PciIo->Mem.Write (
Private->PciIo,
EfiPciIoWidthUint8,
PCI_BAR_IDX2,
0x400 - 0x3c0 + Reg,
1,
&Data
);
ASSERT_EFI_ERROR (Status);
} else {
outb (Private, Reg, Data);
}
}
VOID
InitializeBochsGraphicsMode (
QEMU_VIDEO_PRIVATE_DATA *Private,
QEMU_VIDEO_BOCHS_MODES *ModeData
)
{
DEBUG ((EFI_D_INFO, "InitializeBochsGraphicsMode: %dx%d @ %d\n",
ModeData->Width, ModeData->Height, ModeData->ColorDepth));
/* unblank */
VgaOutb (Private, ATT_ADDRESS_REGISTER, 0x20);
BochsWrite (Private, VBE_DISPI_INDEX_ENABLE, 0);
BochsWrite (Private, VBE_DISPI_INDEX_BANK, 0);
BochsWrite (Private, VBE_DISPI_INDEX_X_OFFSET, 0);
BochsWrite (Private, VBE_DISPI_INDEX_Y_OFFSET, 0);
BochsWrite (Private, VBE_DISPI_INDEX_BPP, (UINT16) ModeData->ColorDepth);
BochsWrite (Private, VBE_DISPI_INDEX_XRES, (UINT16) ModeData->Width);
BochsWrite (Private, VBE_DISPI_INDEX_VIRT_WIDTH, (UINT16) ModeData->Width);
BochsWrite (Private, VBE_DISPI_INDEX_YRES, (UINT16) ModeData->Height);
BochsWrite (Private, VBE_DISPI_INDEX_VIRT_HEIGHT, (UINT16) ModeData->Height);
BochsWrite (Private, VBE_DISPI_INDEX_ENABLE,
VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED);
SetDefaultPalette (Private);
ClearScreen (Private);
}
EFI_STATUS
EFIAPI
InitializeQemuVideo (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
Status = EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gQemuVideoDriverBinding,
ImageHandle,
&gQemuVideoComponentName,
&gQemuVideoComponentName2
);
ASSERT_EFI_ERROR (Status);
//
// Install EFI Driver Supported EFI Version Protocol required for
// EFI drivers that are on PCI and other plug in cards.
//
gQemuVideoDriverSupportedEfiVersion.FirmwareVersion = PcdGet32 (PcdDriverSupportedEfiVersion);
Status = gBS->InstallMultipleProtocolInterfaces (
&ImageHandle,
&gEfiDriverSupportedEfiVersionProtocolGuid,
&gQemuVideoDriverSupportedEfiVersion,
NULL
);
ASSERT_EFI_ERROR (Status);
return Status;
}
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