diff options
Diffstat (limited to 'EmulatorPkg/EmuGopDxe/GopScreen.c')
| -rw-r--r-- | EmulatorPkg/EmuGopDxe/GopScreen.c | 832 |
1 files changed, 416 insertions, 416 deletions
diff --git a/EmulatorPkg/EmuGopDxe/GopScreen.c b/EmulatorPkg/EmuGopDxe/GopScreen.c index aa21fa68de..761d945c15 100644 --- a/EmulatorPkg/EmuGopDxe/GopScreen.c +++ b/EmulatorPkg/EmuGopDxe/GopScreen.c @@ -1,416 +1,416 @@ -/*++ @file - -Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR> -Portions copyright (c) 2010 - 2011, Apple Inc. All rights reserved. -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. - -Module Name: - - EmuGopScreen.c - -Abstract: - - This file produces the graphics abstration of UGA. It is called by - EmuGopDriver.c file which deals with the EFI 1.1 driver model. - This file just does graphics. - -**/ - -#include "Gop.h" - - -EFI_EVENT mGopScreenExitBootServicesEvent; - -GOP_MODE_DATA mGopModeData[] = { - { 800, 600, 0, 0 }, - { 640, 480, 0, 0 }, - { 720, 400, 0, 0 }, - {1024, 768, 0, 0 }, - {1280, 1024, 0, 0 } - }; - - -/** - Returns information for an available graphics mode that the graphics device - and the set of active video output devices supports. - - @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance. - @param ModeNumber The mode number to return information on. - @param SizeOfInfo A pointer to the size, in bytes, of the Info buffer. - @param Info A pointer to callee allocated buffer that returns information about ModeNumber. - - @retval EFI_SUCCESS Mode information returned. - @retval EFI_BUFFER_TOO_SMALL The Info buffer was too small. - @retval EFI_DEVICE_ERROR A hardware error occurred trying to retrieve the video mode. - @retval EFI_NOT_STARTED Video display is not initialized. Call SetMode () - @retval EFI_INVALID_PARAMETER One of the input args was NULL. - -**/ -EFI_STATUS -EFIAPI -EmuGopQuerytMode ( - IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This, - IN UINT32 ModeNumber, - OUT UINTN *SizeOfInfo, - OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info - ) -{ - GOP_PRIVATE_DATA *Private; - - Private = GOP_PRIVATE_DATA_FROM_THIS (This); - - if (Info == NULL || SizeOfInfo == NULL || (UINTN) ModeNumber >= This->Mode->MaxMode) { - return EFI_INVALID_PARAMETER; - } - - *Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION)); - if (*Info == NULL) { - return EFI_OUT_OF_RESOURCES; - } - - *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION); - - (*Info)->Version = 0; - (*Info)->HorizontalResolution = Private->ModeData[ModeNumber].HorizontalResolution; - (*Info)->VerticalResolution = Private->ModeData[ModeNumber].VerticalResolution; - (*Info)->PixelFormat = PixelBltOnly; - (*Info)->PixelsPerScanLine = (*Info)->HorizontalResolution; - - return EFI_SUCCESS; -} - - - -/** - Set the video device into the specified mode and clears the visible portions of - the output display to black. - - @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance. - @param ModeNumber Abstraction that defines the current video mode. - - @retval EFI_SUCCESS The graphics mode specified by ModeNumber was selected. - @retval EFI_DEVICE_ERROR The device had an error and could not complete the request. - @retval EFI_UNSUPPORTED ModeNumber is not supported by this device. - -**/ -EFI_STATUS -EFIAPI -EmuGopSetMode ( - IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This, - IN UINT32 ModeNumber - ) -{ - EFI_STATUS Status; - GOP_PRIVATE_DATA *Private; - GOP_MODE_DATA *ModeData; - EFI_GRAPHICS_OUTPUT_BLT_PIXEL Fill; - - Private = GOP_PRIVATE_DATA_FROM_THIS (This); - - if (ModeNumber >= This->Mode->MaxMode) { - return EFI_UNSUPPORTED; - } - - ModeData = &Private->ModeData[ModeNumber]; - This->Mode->Mode = ModeNumber; - Private->GraphicsOutput.Mode->Info->HorizontalResolution = ModeData->HorizontalResolution; - Private->GraphicsOutput.Mode->Info->VerticalResolution = ModeData->VerticalResolution; - Private->GraphicsOutput.Mode->Info->PixelsPerScanLine = ModeData->HorizontalResolution; - - if (Private->HardwareNeedsStarting) { - Status = EmuGopStartWindow ( - Private, - ModeData->HorizontalResolution, - ModeData->VerticalResolution, - ModeData->ColorDepth, - ModeData->RefreshRate - ); - if (EFI_ERROR (Status)) { - return EFI_DEVICE_ERROR; - } - - Private->HardwareNeedsStarting = FALSE; - } - - - Status = Private->EmuGraphicsWindow->Size( - Private->EmuGraphicsWindow, - ModeData->HorizontalResolution, - ModeData->VerticalResolution - ); - - - Fill.Red = 0x7f; - Fill.Green = 0x7F; - Fill.Blue = 0x7f; - This->Blt ( - This, - &Fill, - EfiBltVideoFill, - 0, - 0, - 0, - 0, - ModeData->HorizontalResolution, - ModeData->VerticalResolution, - ModeData->HorizontalResolution * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL) - ); - return EFI_SUCCESS; -} - - - -/** - Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer. - - @param This Protocol instance pointer. - @param BltBuffer Buffer containing data to blit into video buffer. This - buffer has a size of Width*Height*sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL) - @param BltOperation Operation to perform on BlitBuffer and video memory - @param SourceX X coordinate of source for the BltBuffer. - @param SourceY Y coordinate of source for the BltBuffer. - @param DestinationX X coordinate of destination for the BltBuffer. - @param DestinationY Y coordinate of destination for the BltBuffer. - @param Width Width of rectangle in BltBuffer in pixels. - @param Height Hight of rectangle in BltBuffer in pixels. - @param Delta OPTIONAL - - @retval EFI_SUCCESS The Blt operation completed. - @retval EFI_INVALID_PARAMETER BltOperation is not valid. - @retval EFI_DEVICE_ERROR A hardware error occured writting to the video buffer. - -**/ -EFI_STATUS -EFIAPI -EmuGopBlt ( - IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This, - IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL - IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation, - IN UINTN SourceX, - IN UINTN SourceY, - IN UINTN DestinationX, - IN UINTN DestinationY, - IN UINTN Width, - IN UINTN Height, - IN UINTN Delta OPTIONAL - ) -{ - GOP_PRIVATE_DATA *Private; - EFI_TPL OriginalTPL; - EFI_STATUS Status; - EMU_GRAPHICS_WINDOWS__BLT_ARGS GopBltArgs; - - Private = GOP_PRIVATE_DATA_FROM_THIS (This); - - if ((UINT32)BltOperation >= EfiGraphicsOutputBltOperationMax) { - return EFI_INVALID_PARAMETER; - } - - if (Width == 0 || Height == 0) { - return EFI_INVALID_PARAMETER; - } - // - // If Delta is zero, then the entire BltBuffer is being used, so Delta - // is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size, - // the number of bytes in each row can be computed. - // - if (Delta == 0) { - Delta = Width * sizeof (EFI_UGA_PIXEL); - } - - // - // We have to raise to TPL Notify, so we make an atomic write the frame buffer. - // We would not want a timer based event (Cursor, ...) to come in while we are - // doing this operation. - // - OriginalTPL = gBS->RaiseTPL (TPL_NOTIFY); - - // - // Pack UGA Draw protocol parameters to EMU_GRAPHICS_WINDOWS__BLT_ARGS structure to adapt to - // GopBlt() API of Unix UGA IO protocol. - // - GopBltArgs.DestinationX = DestinationX; - GopBltArgs.DestinationY = DestinationY; - GopBltArgs.Height = Height; - GopBltArgs.Width = Width; - GopBltArgs.SourceX = SourceX; - GopBltArgs.SourceY = SourceY; - GopBltArgs.Delta = Delta; - Status = Private->EmuGraphicsWindow->Blt ( - Private->EmuGraphicsWindow, - (EFI_UGA_PIXEL *)BltBuffer, - (EFI_UGA_BLT_OPERATION)BltOperation, - &GopBltArgs - ); - - gBS->RestoreTPL (OriginalTPL); - - return Status; -} - - -// -// Construction and Destruction functions -// - -EFI_STATUS -EmuGopSupported ( - IN EMU_IO_THUNK_PROTOCOL *EmuIoThunk - ) -{ - // - // Check to see if the IO abstraction represents a device type we support. - // - // This would be replaced a check of PCI subsystem ID, etc. - // - if (!CompareGuid (EmuIoThunk->Protocol, &gEmuGraphicsWindowProtocolGuid)) { - return EFI_UNSUPPORTED; - } - - return EFI_SUCCESS; -} - - -EFI_STATUS -EmuGopStartWindow ( - IN GOP_PRIVATE_DATA *Private, - IN UINT32 HorizontalResolution, - IN UINT32 VerticalResolution, - IN UINT32 ColorDepth, - IN UINT32 RefreshRate - ) -{ - EFI_STATUS Status; - - // - // Register to be notified on exit boot services so we can destroy the window. - // - Status = gBS->CreateEvent ( - EVT_SIGNAL_EXIT_BOOT_SERVICES, - TPL_CALLBACK, - ShutdownGopEvent, - Private, - &mGopScreenExitBootServicesEvent - ); - - Status = Private->EmuIoThunk->Open (Private->EmuIoThunk); - if (!EFI_ERROR (Status)) { - Private->EmuGraphicsWindow = Private->EmuIoThunk->Interface; - - // Register callback to support RegisterKeyNotify() - Status = Private->EmuGraphicsWindow->RegisterKeyNotify ( - Private->EmuGraphicsWindow, - GopPrivateMakeCallbackFunction, - GopPrivateBreakCallbackFunction, - Private - ); - ASSERT_EFI_ERROR (Status); - } - return Status; -} - -EFI_STATUS -EmuGopConstructor ( - GOP_PRIVATE_DATA *Private - ) -{ - Private->ModeData = mGopModeData; - - Private->GraphicsOutput.QueryMode = EmuGopQuerytMode; - Private->GraphicsOutput.SetMode = EmuGopSetMode; - Private->GraphicsOutput.Blt = EmuGopBlt; - - // - // Allocate buffer for Graphics Output Protocol mode information - // - Private->GraphicsOutput.Mode = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE)); - if (Private->GraphicsOutput.Mode == NULL) { - return EFI_OUT_OF_RESOURCES; - } - Private->GraphicsOutput.Mode->Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION)); - if (Private->GraphicsOutput.Mode->Info == NULL) { - return EFI_OUT_OF_RESOURCES; - } - - Private->GraphicsOutput.Mode->MaxMode = sizeof(mGopModeData) / sizeof(GOP_MODE_DATA); - // - // Till now, we have no idea about the window size. - // - Private->GraphicsOutput.Mode->Mode = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER; - Private->GraphicsOutput.Mode->Info->Version = 0; - Private->GraphicsOutput.Mode->Info->HorizontalResolution = 0; - Private->GraphicsOutput.Mode->Info->VerticalResolution = 0; - Private->GraphicsOutput.Mode->Info->PixelFormat = PixelBltOnly; - Private->GraphicsOutput.Mode->SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION); - Private->GraphicsOutput.Mode->FrameBufferBase = (EFI_PHYSICAL_ADDRESS) (UINTN) NULL; - Private->GraphicsOutput.Mode->FrameBufferSize = 0; - - Private->HardwareNeedsStarting = TRUE; - Private->EmuGraphicsWindow = NULL; - - EmuGopInitializeSimpleTextInForWindow (Private); - - EmuGopInitializeSimplePointerForWindow (Private); - - return EFI_SUCCESS; -} - - - -EFI_STATUS -EmuGopDestructor ( - GOP_PRIVATE_DATA *Private - ) -{ - if (!Private->HardwareNeedsStarting) { - Private->EmuIoThunk->Close (Private->EmuIoThunk); - Private->EmuGraphicsWindow = NULL; - } - - // - // Free graphics output protocol occupied resource - // - if (Private->GraphicsOutput.Mode != NULL) { - if (Private->GraphicsOutput.Mode->Info != NULL) { - FreePool (Private->GraphicsOutput.Mode->Info); - } - FreePool (Private->GraphicsOutput.Mode); - } - - return EFI_SUCCESS; -} - - -VOID -EFIAPI -ShutdownGopEvent ( - IN EFI_EVENT Event, - IN VOID *Context - ) -/*++ - -Routine Description: - - This is the UGA screen's callback notification function for exit-boot-services. - All we do here is call EmuGopDestructor(). - -Arguments: - - Event - not used - Context - pointer to the Private structure. - -Returns: - - None. - -**/ -{ - EmuGopDestructor (Context); -} - +/*++ @file
+
+Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+Portions copyright (c) 2010 - 2011, Apple Inc. All rights reserved.
+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.
+
+Module Name:
+
+ EmuGopScreen.c
+
+Abstract:
+
+ This file produces the graphics abstration of UGA. It is called by
+ EmuGopDriver.c file which deals with the EFI 1.1 driver model.
+ This file just does graphics.
+
+**/
+
+#include "Gop.h"
+
+
+EFI_EVENT mGopScreenExitBootServicesEvent;
+
+GOP_MODE_DATA mGopModeData[] = {
+ { 800, 600, 0, 0 },
+ { 640, 480, 0, 0 },
+ { 720, 400, 0, 0 },
+ {1024, 768, 0, 0 },
+ {1280, 1024, 0, 0 }
+ };
+
+
+/**
+ Returns information for an available graphics mode that the graphics device
+ and the set of active video output devices supports.
+
+ @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
+ @param ModeNumber The mode number to return information on.
+ @param SizeOfInfo A pointer to the size, in bytes, of the Info buffer.
+ @param Info A pointer to callee allocated buffer that returns information about ModeNumber.
+
+ @retval EFI_SUCCESS Mode information returned.
+ @retval EFI_BUFFER_TOO_SMALL The Info buffer was too small.
+ @retval EFI_DEVICE_ERROR A hardware error occurred trying to retrieve the video mode.
+ @retval EFI_NOT_STARTED Video display is not initialized. Call SetMode ()
+ @retval EFI_INVALID_PARAMETER One of the input args was NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+EmuGopQuerytMode (
+ IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
+ IN UINT32 ModeNumber,
+ OUT UINTN *SizeOfInfo,
+ OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info
+ )
+{
+ GOP_PRIVATE_DATA *Private;
+
+ Private = GOP_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Info == NULL || SizeOfInfo == NULL || (UINTN) ModeNumber >= This->Mode->MaxMode) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION));
+ if (*Info == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ *SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
+
+ (*Info)->Version = 0;
+ (*Info)->HorizontalResolution = Private->ModeData[ModeNumber].HorizontalResolution;
+ (*Info)->VerticalResolution = Private->ModeData[ModeNumber].VerticalResolution;
+ (*Info)->PixelFormat = PixelBltOnly;
+ (*Info)->PixelsPerScanLine = (*Info)->HorizontalResolution;
+
+ return EFI_SUCCESS;
+}
+
+
+
+/**
+ Set the video device into the specified mode and clears the visible portions of
+ the output display to black.
+
+ @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
+ @param ModeNumber Abstraction that defines the current video mode.
+
+ @retval EFI_SUCCESS The graphics mode specified by ModeNumber was selected.
+ @retval EFI_DEVICE_ERROR The device had an error and could not complete the request.
+ @retval EFI_UNSUPPORTED ModeNumber is not supported by this device.
+
+**/
+EFI_STATUS
+EFIAPI
+EmuGopSetMode (
+ IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
+ IN UINT32 ModeNumber
+ )
+{
+ EFI_STATUS Status;
+ GOP_PRIVATE_DATA *Private;
+ GOP_MODE_DATA *ModeData;
+ EFI_GRAPHICS_OUTPUT_BLT_PIXEL Fill;
+
+ Private = GOP_PRIVATE_DATA_FROM_THIS (This);
+
+ if (ModeNumber >= This->Mode->MaxMode) {
+ return EFI_UNSUPPORTED;
+ }
+
+ ModeData = &Private->ModeData[ModeNumber];
+ This->Mode->Mode = ModeNumber;
+ Private->GraphicsOutput.Mode->Info->HorizontalResolution = ModeData->HorizontalResolution;
+ Private->GraphicsOutput.Mode->Info->VerticalResolution = ModeData->VerticalResolution;
+ Private->GraphicsOutput.Mode->Info->PixelsPerScanLine = ModeData->HorizontalResolution;
+
+ if (Private->HardwareNeedsStarting) {
+ Status = EmuGopStartWindow (
+ Private,
+ ModeData->HorizontalResolution,
+ ModeData->VerticalResolution,
+ ModeData->ColorDepth,
+ ModeData->RefreshRate
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ Private->HardwareNeedsStarting = FALSE;
+ }
+
+
+ Status = Private->EmuGraphicsWindow->Size(
+ Private->EmuGraphicsWindow,
+ ModeData->HorizontalResolution,
+ ModeData->VerticalResolution
+ );
+
+
+ Fill.Red = 0x7f;
+ Fill.Green = 0x7F;
+ Fill.Blue = 0x7f;
+ This->Blt (
+ This,
+ &Fill,
+ EfiBltVideoFill,
+ 0,
+ 0,
+ 0,
+ 0,
+ ModeData->HorizontalResolution,
+ ModeData->VerticalResolution,
+ ModeData->HorizontalResolution * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+ );
+ return EFI_SUCCESS;
+}
+
+
+
+/**
+ Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer.
+
+ @param This Protocol instance pointer.
+ @param BltBuffer Buffer containing data to blit into video buffer. This
+ buffer has a size of Width*Height*sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
+ @param BltOperation Operation to perform on BlitBuffer and video memory
+ @param SourceX X coordinate of source for the BltBuffer.
+ @param SourceY Y coordinate of source for the BltBuffer.
+ @param DestinationX X coordinate of destination for the BltBuffer.
+ @param DestinationY Y coordinate of destination for the BltBuffer.
+ @param Width Width of rectangle in BltBuffer in pixels.
+ @param Height Hight of rectangle in BltBuffer in pixels.
+ @param Delta OPTIONAL
+
+ @retval EFI_SUCCESS The Blt operation completed.
+ @retval EFI_INVALID_PARAMETER BltOperation is not valid.
+ @retval EFI_DEVICE_ERROR A hardware error occured writting to the video buffer.
+
+**/
+EFI_STATUS
+EFIAPI
+EmuGopBlt (
+ IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
+ IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
+ IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,
+ IN UINTN SourceX,
+ IN UINTN SourceY,
+ IN UINTN DestinationX,
+ IN UINTN DestinationY,
+ IN UINTN Width,
+ IN UINTN Height,
+ IN UINTN Delta OPTIONAL
+ )
+{
+ GOP_PRIVATE_DATA *Private;
+ EFI_TPL OriginalTPL;
+ EFI_STATUS Status;
+ EMU_GRAPHICS_WINDOWS__BLT_ARGS GopBltArgs;
+
+ Private = GOP_PRIVATE_DATA_FROM_THIS (This);
+
+ if ((UINT32)BltOperation >= EfiGraphicsOutputBltOperationMax) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Width == 0 || Height == 0) {
+ return EFI_INVALID_PARAMETER;
+ }
+ //
+ // If Delta is zero, then the entire BltBuffer is being used, so Delta
+ // is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,
+ // the number of bytes in each row can be computed.
+ //
+ if (Delta == 0) {
+ Delta = Width * sizeof (EFI_UGA_PIXEL);
+ }
+
+ //
+ // We have to raise to TPL Notify, so we make an atomic write the frame buffer.
+ // We would not want a timer based event (Cursor, ...) to come in while we are
+ // doing this operation.
+ //
+ OriginalTPL = gBS->RaiseTPL (TPL_NOTIFY);
+
+ //
+ // Pack UGA Draw protocol parameters to EMU_GRAPHICS_WINDOWS__BLT_ARGS structure to adapt to
+ // GopBlt() API of Unix UGA IO protocol.
+ //
+ GopBltArgs.DestinationX = DestinationX;
+ GopBltArgs.DestinationY = DestinationY;
+ GopBltArgs.Height = Height;
+ GopBltArgs.Width = Width;
+ GopBltArgs.SourceX = SourceX;
+ GopBltArgs.SourceY = SourceY;
+ GopBltArgs.Delta = Delta;
+ Status = Private->EmuGraphicsWindow->Blt (
+ Private->EmuGraphicsWindow,
+ (EFI_UGA_PIXEL *)BltBuffer,
+ (EFI_UGA_BLT_OPERATION)BltOperation,
+ &GopBltArgs
+ );
+
+ gBS->RestoreTPL (OriginalTPL);
+
+ return Status;
+}
+
+
+//
+// Construction and Destruction functions
+//
+
+EFI_STATUS
+EmuGopSupported (
+ IN EMU_IO_THUNK_PROTOCOL *EmuIoThunk
+ )
+{
+ //
+ // Check to see if the IO abstraction represents a device type we support.
+ //
+ // This would be replaced a check of PCI subsystem ID, etc.
+ //
+ if (!CompareGuid (EmuIoThunk->Protocol, &gEmuGraphicsWindowProtocolGuid)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ return EFI_SUCCESS;
+}
+
+
+EFI_STATUS
+EmuGopStartWindow (
+ IN GOP_PRIVATE_DATA *Private,
+ IN UINT32 HorizontalResolution,
+ IN UINT32 VerticalResolution,
+ IN UINT32 ColorDepth,
+ IN UINT32 RefreshRate
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Register to be notified on exit boot services so we can destroy the window.
+ //
+ Status = gBS->CreateEvent (
+ EVT_SIGNAL_EXIT_BOOT_SERVICES,
+ TPL_CALLBACK,
+ ShutdownGopEvent,
+ Private,
+ &mGopScreenExitBootServicesEvent
+ );
+
+ Status = Private->EmuIoThunk->Open (Private->EmuIoThunk);
+ if (!EFI_ERROR (Status)) {
+ Private->EmuGraphicsWindow = Private->EmuIoThunk->Interface;
+
+ // Register callback to support RegisterKeyNotify()
+ Status = Private->EmuGraphicsWindow->RegisterKeyNotify (
+ Private->EmuGraphicsWindow,
+ GopPrivateMakeCallbackFunction,
+ GopPrivateBreakCallbackFunction,
+ Private
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
+ return Status;
+}
+
+EFI_STATUS
+EmuGopConstructor (
+ GOP_PRIVATE_DATA *Private
+ )
+{
+ Private->ModeData = mGopModeData;
+
+ Private->GraphicsOutput.QueryMode = EmuGopQuerytMode;
+ Private->GraphicsOutput.SetMode = EmuGopSetMode;
+ Private->GraphicsOutput.Blt = EmuGopBlt;
+
+ //
+ // Allocate buffer for Graphics Output Protocol mode information
+ //
+ Private->GraphicsOutput.Mode = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE));
+ if (Private->GraphicsOutput.Mode == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ Private->GraphicsOutput.Mode->Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION));
+ if (Private->GraphicsOutput.Mode->Info == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Private->GraphicsOutput.Mode->MaxMode = sizeof(mGopModeData) / sizeof(GOP_MODE_DATA);
+ //
+ // Till now, we have no idea about the window size.
+ //
+ Private->GraphicsOutput.Mode->Mode = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER;
+ Private->GraphicsOutput.Mode->Info->Version = 0;
+ Private->GraphicsOutput.Mode->Info->HorizontalResolution = 0;
+ Private->GraphicsOutput.Mode->Info->VerticalResolution = 0;
+ Private->GraphicsOutput.Mode->Info->PixelFormat = PixelBltOnly;
+ Private->GraphicsOutput.Mode->SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
+ Private->GraphicsOutput.Mode->FrameBufferBase = (EFI_PHYSICAL_ADDRESS) (UINTN) NULL;
+ Private->GraphicsOutput.Mode->FrameBufferSize = 0;
+
+ Private->HardwareNeedsStarting = TRUE;
+ Private->EmuGraphicsWindow = NULL;
+
+ EmuGopInitializeSimpleTextInForWindow (Private);
+
+ EmuGopInitializeSimplePointerForWindow (Private);
+
+ return EFI_SUCCESS;
+}
+
+
+
+EFI_STATUS
+EmuGopDestructor (
+ GOP_PRIVATE_DATA *Private
+ )
+{
+ if (!Private->HardwareNeedsStarting) {
+ Private->EmuIoThunk->Close (Private->EmuIoThunk);
+ Private->EmuGraphicsWindow = NULL;
+ }
+
+ //
+ // Free graphics output protocol occupied resource
+ //
+ if (Private->GraphicsOutput.Mode != NULL) {
+ if (Private->GraphicsOutput.Mode->Info != NULL) {
+ FreePool (Private->GraphicsOutput.Mode->Info);
+ }
+ FreePool (Private->GraphicsOutput.Mode);
+ }
+
+ return EFI_SUCCESS;
+}
+
+
+VOID
+EFIAPI
+ShutdownGopEvent (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+/*++
+
+Routine Description:
+
+ This is the UGA screen's callback notification function for exit-boot-services.
+ All we do here is call EmuGopDestructor().
+
+Arguments:
+
+ Event - not used
+ Context - pointer to the Private structure.
+
+Returns:
+
+ None.
+
+**/
+{
+ EmuGopDestructor (Context);
+}
+
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