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audk/MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterGraphics.c

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/** @file
Support for ConsoleControl protocol. Support for Graphics output spliter.
Support for DevNull Console Out. This console uses memory buffers
to represnt the console. It allows a console to start very early and
when a new console is added it is synced up with the current console.
Copyright (c) 2006 - 2008, Intel Corporation. <BR>
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.
**/
#include "ConSplitter.h"
STATIC CHAR16 mCrLfString[3] = { CHAR_CARRIAGE_RETURN, CHAR_LINEFEED, CHAR_NULL };
/**
Return the current video mode information. Also returns info about existence
of Graphics Output devices or UGA Draw devices in system, and if the Std In device is locked. All the
arguments are optional and only returned if a non NULL pointer is passed in.
@param This Protocol instance pointer.
@param Mode Are we in text of grahics mode.
@param GopExists TRUE if GOP Spliter has found a GOP/UGA device
@param StdInLocked TRUE if StdIn device is keyboard locked
@retval EFI_SUCCESS Mode information returned.
@retval EFI_INVALID_PARAMETER Invalid parameters.
**/
EFI_STATUS
EFIAPI
ConSpliterConsoleControlGetMode (
IN EFI_CONSOLE_CONTROL_PROTOCOL *This,
OUT EFI_CONSOLE_CONTROL_SCREEN_MODE *Mode,
OUT BOOLEAN *GopExists,
OUT BOOLEAN *StdInLocked
)
{
TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
UINTN Index;
Private = CONSOLE_CONTROL_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
if (Mode == NULL) {
return EFI_INVALID_PARAMETER;
}
*Mode = Private->ConsoleOutputMode;
if (GopExists != NULL) {
*GopExists = FALSE;
for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
if ((Private->TextOutList[Index].GraphicsOutput != NULL) || (Private->TextOutList[Index].UgaDraw != NULL)) {
*GopExists = TRUE;
break;
}
}
}
if (StdInLocked != NULL) {
*StdInLocked = ConSpliterConssoleControlStdInLocked ();
}
return EFI_SUCCESS;
}
/**
Set the current mode to either text or graphics. Graphics is
for Quiet Boot.
@param This Protocol instance pointer.
@param Mode Mode to set the
@retval EFI_SUCCESS Mode information returned.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_UNSUPPORTED Operation unsupported.
**/
EFI_STATUS
EFIAPI
ConSpliterConsoleControlSetMode (
IN EFI_CONSOLE_CONTROL_PROTOCOL *This,
IN EFI_CONSOLE_CONTROL_SCREEN_MODE Mode
)
{
TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
UINTN Index;
TEXT_OUT_AND_GOP_DATA *TextAndGop;
BOOLEAN Supported;
Private = CONSOLE_CONTROL_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
if (Mode >= EfiConsoleControlScreenMaxValue) {
return EFI_INVALID_PARAMETER;
}
//
// Judge current mode with wanted mode at first.
//
if (Private->ConsoleOutputMode == Mode) {
return EFI_SUCCESS;
}
Supported = FALSE;
TextAndGop = &Private->TextOutList[0];
for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++, TextAndGop++) {
if ((TextAndGop->GraphicsOutput != NULL) || (TextAndGop->UgaDraw != NULL)) {
Supported = TRUE;
break;
}
}
if ((!Supported) && (Mode == EfiConsoleControlScreenGraphics)) {
return EFI_UNSUPPORTED;
}
Private->ConsoleOutputMode = Mode;
TextAndGop = &Private->TextOutList[0];
for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++, TextAndGop++) {
TextAndGop->TextOutEnabled = TRUE;
//
// If we are going into Graphics mode disable ConOut to any UGA device
//
if ((Mode == EfiConsoleControlScreenGraphics) &&((TextAndGop->GraphicsOutput != NULL) || (TextAndGop->UgaDraw != NULL))) {
TextAndGop->TextOutEnabled = FALSE;
if (FeaturePcdGet (PcdConOutGopSupport)) {
DevNullGopSync (Private, TextAndGop->GraphicsOutput, TextAndGop->UgaDraw);
} else if (FeaturePcdGet (PcdConOutUgaSupport)) {
DevNullUgaSync (Private, TextAndGop->GraphicsOutput, TextAndGop->UgaDraw);
}
}
}
if (Mode == EfiConsoleControlScreenText) {
DevNullSyncStdOut (Private);
}
return EFI_SUCCESS;
}
/**
Return the current video mode information.
@param This Protocol instance pointer.
@param ModeNumber The mode number to return information on.
@param SizeOfInfo A pointer to the size, in bytes, of the Info
buffer.
@param Info Caller 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
ConSpliterGraphicsOutputQueryMode (
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
IN UINT32 ModeNumber,
OUT UINTN *SizeOfInfo,
OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info
)
{
TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
if (This == NULL || Info == NULL || SizeOfInfo == NULL || ModeNumber >= This->Mode->MaxMode) {
return EFI_INVALID_PARAMETER;
}
//
// retrieve private data
//
Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
if (Private->HardwareNeedsStarting) {
return EFI_NOT_STARTED;
}
*Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION));
if (*Info == NULL) {
return EFI_OUT_OF_RESOURCES;
}
*SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
CopyMem (*Info, &Private->GraphicsOutputModeBuffer[ModeNumber], *SizeOfInfo);
return EFI_SUCCESS;
}
/**
Graphics output protocol interface to set video mode
@param This Protocol instance pointer.
@param ModeNumber The mode number to be set.
@retval EFI_SUCCESS Graphics mode was changed.
@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
ConSpliterGraphicsOutputSetMode (
IN EFI_GRAPHICS_OUTPUT_PROTOCOL * This,
IN UINT32 ModeNumber
)
{
EFI_STATUS Status;
TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
UINTN Index;
EFI_STATUS ReturnStatus;
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Mode;
UINTN Size;
EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;
UINTN NumberIndex;
UINTN SizeOfInfo;
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info;
EFI_UGA_DRAW_PROTOCOL *UgaDraw;
if (ModeNumber >= This->Mode->MaxMode) {
return EFI_UNSUPPORTED;
}
if (ModeNumber == This->Mode->Mode) {
return EFI_SUCCESS;
}
Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
//
// GopDevNullSetMode ()
//
ReturnStatus = EFI_SUCCESS;
//
// Free the old version
//
if (Private->GraphicsOutputBlt != NULL) {
FreePool (Private->GraphicsOutputBlt);
}
//
// Allocate the virtual Blt buffer
//
Mode = &Private->GraphicsOutputModeBuffer[ModeNumber];
Size = Mode->HorizontalResolution * Mode->VerticalResolution * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
Private->GraphicsOutputBlt = AllocateZeroPool (Size);
if (Private->GraphicsOutputBlt == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// return the worst status met
//
for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
GraphicsOutput = Private->TextOutList[Index].GraphicsOutput;
if (GraphicsOutput != NULL) {
//
// Find corresponding ModeNumber of this GraphicsOutput instance
//
for (NumberIndex = 0; NumberIndex < GraphicsOutput->Mode->MaxMode; NumberIndex ++) {
Status = GraphicsOutput->QueryMode (GraphicsOutput, (UINT32) NumberIndex, &SizeOfInfo, &Info);
if (EFI_ERROR (Status)) {
return Status;
}
if ((Info->HorizontalResolution == Mode->HorizontalResolution) && (Info->VerticalResolution == Mode->VerticalResolution)) {
FreePool (Info);
break;
}
FreePool (Info);
}
Status = GraphicsOutput->SetMode (GraphicsOutput, (UINT32) NumberIndex);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
}
}
if (EFI_ERROR (ReturnStatus) && FeaturePcdGet (PcdUgaConsumeSupport)) {
UgaDraw = Private->TextOutList[Index].UgaDraw;
if (UgaDraw != NULL) {
Status = UgaDraw->SetMode (
UgaDraw,
Mode->HorizontalResolution,
Mode->VerticalResolution,
32,
60
);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
}
}
}
}
This->Mode->Mode = ModeNumber;
CopyMem (This->Mode->Info, &Private->GraphicsOutputModeBuffer[ModeNumber], This->Mode->SizeOfInfo);
//
// Information is not enough here, so the following items remain unchanged:
// GraphicsOutputMode->Info->Version, GraphicsOutputMode->Info->PixelFormat
// GraphicsOutputMode->SizeOfInfo, GraphicsOutputMode->FrameBufferBase, GraphicsOutputMode->FrameBufferSize
// These items will be initialized/updated when a new GOP device is added into ConsoleSplitter.
//
Private->HardwareNeedsStarting = FALSE;
return ReturnStatus;
}
/**
The following table defines actions for BltOperations.
EfiBltVideoFill - Write data from the BltBuffer pixel (SourceX, SourceY)
directly to every pixel of the video display rectangle
(DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height).
Only one pixel will be used from the BltBuffer. Delta is NOT used.
EfiBltVideoToBltBuffer - Read data from the video display rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in
the BltBuffer rectangle (DestinationX, DestinationY )
(DestinationX + Width, DestinationY + Height). If DestinationX or
DestinationY is not zero then Delta must be set to the length in bytes
of a row in the BltBuffer.
EfiBltBufferToVideo - Write data from the BltBuffer rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the
video display rectangle (DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height). If SourceX or SourceY is
not zero then Delta must be set to the length in bytes of a row in the
BltBuffer.
EfiBltVideoToVideo - Copy from the video display rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) .
to the video display rectangle (DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height).
The BltBuffer and Delta are not used in this mode.
@param Private 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
DevNullGraphicsOutputBlt (
IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
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
)
{
UINTN SrcY;
BOOLEAN Forward;
UINTN Index;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltPtr;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL *ScreenPtr;
UINTN HorizontalResolution;
UINTN VerticalResolution;
if ((BltOperation < EfiBltVideoFill) || (BltOperation >= EfiGraphicsOutputBltOperationMax)) {
return EFI_INVALID_PARAMETER;
}
if (Width == 0 || Height == 0) {
return EFI_INVALID_PARAMETER;
}
if (Delta == 0) {
Delta = Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
}
HorizontalResolution = Private->GraphicsOutput.Mode->Info->HorizontalResolution;
VerticalResolution = Private->GraphicsOutput.Mode->Info->VerticalResolution;
//
// We need to fill the Virtual Screen buffer with the blt data.
//
if (BltOperation == EfiBltVideoToBltBuffer) {
//
// Video to BltBuffer: Source is Video, destination is BltBuffer
//
if ((SourceY + Height) > VerticalResolution) {
return EFI_INVALID_PARAMETER;
}
if ((SourceX + Width) > HorizontalResolution) {
return EFI_INVALID_PARAMETER;
}
BltPtr = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) ((UINT8 *) BltBuffer + DestinationY * Delta + DestinationX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
ScreenPtr = &Private->GraphicsOutputBlt[SourceY * HorizontalResolution + SourceX];
while (Height > 0) {
CopyMem (BltPtr, ScreenPtr, Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
BltPtr = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) ((UINT8 *) BltPtr + Delta);
ScreenPtr += HorizontalResolution;
Height--;
}
} else {
//
// BltBuffer to Video: Source is BltBuffer, destination is Video
//
if (DestinationY + Height > VerticalResolution) {
return EFI_INVALID_PARAMETER;
}
if (DestinationX + Width > HorizontalResolution) {
return EFI_INVALID_PARAMETER;
}
if ((BltOperation == EfiBltVideoToVideo) && (DestinationY > SourceY)) {
//
// Copy backwards, only care the Video to Video Blt
//
ScreenPtr = &Private->GraphicsOutputBlt[(DestinationY + Height - 1) * HorizontalResolution + DestinationX];
SrcY = SourceY + Height - 1;
Forward = FALSE;
} else {
//
// Copy forwards, for other cases
//
ScreenPtr = &Private->GraphicsOutputBlt[DestinationY * HorizontalResolution + DestinationX];
SrcY = SourceY;
Forward = TRUE;
}
while (Height != 0) {
if (BltOperation == EfiBltVideoFill) {
for (Index = 0; Index < Width; Index++) {
ScreenPtr[Index] = *BltBuffer;
}
} else {
if (BltOperation == EfiBltBufferToVideo) {
BltPtr = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) ((UINT8 *) BltBuffer + SrcY * Delta + SourceX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
} else {
BltPtr = &Private->GraphicsOutputBlt[SrcY * HorizontalResolution + SourceX];
}
CopyMem (ScreenPtr, BltPtr, Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
}
if (Forward) {
ScreenPtr += HorizontalResolution;
SrcY ++;
} else {
ScreenPtr -= HorizontalResolution;
SrcY --;
}
Height--;
}
}
return EFI_SUCCESS;
}
/**
The following table defines actions for BltOperations.
EfiBltVideoFill - Write data from the BltBuffer pixel (SourceX, SourceY)
directly to every pixel of the video display rectangle
(DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height).
Only one pixel will be used from the BltBuffer. Delta is NOT used.
EfiBltVideoToBltBuffer - Read data from the video display rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in
the BltBuffer rectangle (DestinationX, DestinationY )
(DestinationX + Width, DestinationY + Height). If DestinationX or
DestinationY is not zero then Delta must be set to the length in bytes
of a row in the BltBuffer.
EfiBltBufferToVideo - Write data from the BltBuffer rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the
video display rectangle (DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height). If SourceX or SourceY is
not zero then Delta must be set to the length in bytes of a row in the
BltBuffer.
EfiBltVideoToVideo - Copy from the video display rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) .
to the video display rectangle (DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height).
The BltBuffer and Delta are not used in this mode.
@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
ConSpliterGraphicsOutputBlt (
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
)
{
EFI_STATUS Status;
TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
UINTN Index;
EFI_STATUS ReturnStatus;
EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;
EFI_UGA_DRAW_PROTOCOL *UgaDraw;
Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
//
// Sync up DevNull GOP device
//
ReturnStatus = DevNullGraphicsOutputBlt (
Private,
BltBuffer,
BltOperation,
SourceX,
SourceY,
DestinationX,
DestinationY,
Width,
Height,
Delta
);
if (Private->ConsoleOutputMode != EfiConsoleControlScreenGraphics) {
return ReturnStatus;
}
//
// return the worst status met
//
for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
GraphicsOutput = Private->TextOutList[Index].GraphicsOutput;
if (GraphicsOutput != NULL) {
Status = GraphicsOutput->Blt (
GraphicsOutput,
BltBuffer,
BltOperation,
SourceX,
SourceY,
DestinationX,
DestinationY,
Width,
Height,
Delta
);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
} else if (BltOperation == EfiBltVideoToBltBuffer) {
//
// Only need to read the data into buffer one time
//
return EFI_SUCCESS;
}
}
UgaDraw = Private->TextOutList[Index].UgaDraw;
if (UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) {
Status = UgaDraw->Blt (
UgaDraw,
(EFI_UGA_PIXEL *) BltBuffer,
(EFI_UGA_BLT_OPERATION) BltOperation,
SourceX,
SourceY,
DestinationX,
DestinationY,
Width,
Height,
Delta
);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
} else if (BltOperation == EfiBltVideoToBltBuffer) {
//
// Only need to read the data into buffer one time
//
return EFI_SUCCESS;
}
}
}
return ReturnStatus;
}
/**
Write data from the buffer to video display based on Graphics Output setting.
@param Private Consplitter Text Out pointer.
@param GraphicsOutput Graphics Output protocol pointer.
@param UgaDraw UGA Draw protocol pointer.
@retval EFI_UNSUPPORTED No graphics devcie available .
@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
DevNullGopSync (
IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput,
IN EFI_UGA_DRAW_PROTOCOL *UgaDraw
)
{
if (GraphicsOutput != NULL) {
return GraphicsOutput->Blt (
GraphicsOutput,
Private->GraphicsOutputBlt,
EfiBltBufferToVideo,
0,
0,
0,
0,
Private->GraphicsOutput.Mode->Info->HorizontalResolution,
Private->GraphicsOutput.Mode->Info->VerticalResolution,
0
);
} else if (FeaturePcdGet (PcdUgaConsumeSupport)) {
return UgaDraw->Blt (
UgaDraw,
(EFI_UGA_PIXEL *) Private->GraphicsOutputBlt,
EfiUgaBltBufferToVideo,
0,
0,
0,
0,
Private->GraphicsOutput.Mode->Info->HorizontalResolution,
Private->GraphicsOutput.Mode->Info->VerticalResolution,
0
);
} else {
return EFI_UNSUPPORTED;
}
}
/**
Return the current video mode information.
@param This Protocol instance pointer.
@param HorizontalResolution Current video horizontal resolution in pixels
@param VerticalResolution Current video vertical resolution in pixels
@param ColorDepth Current video color depth in bits per pixel
@param RefreshRate Current video refresh rate in Hz.
@retval EFI_SUCCESS Mode information returned.
@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
ConSpliterUgaDrawGetMode (
IN EFI_UGA_DRAW_PROTOCOL *This,
OUT UINT32 *HorizontalResolution,
OUT UINT32 *VerticalResolution,
OUT UINT32 *ColorDepth,
OUT UINT32 *RefreshRate
)
{
TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
if ((HorizontalResolution == NULL) ||
(VerticalResolution == NULL) ||
(RefreshRate == NULL) ||
(ColorDepth == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// retrieve private data
//
Private = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
*HorizontalResolution = Private->UgaHorizontalResolution;
*VerticalResolution = Private->UgaVerticalResolution;
*ColorDepth = Private->UgaColorDepth;
*RefreshRate = Private->UgaRefreshRate;
return EFI_SUCCESS;
}
/**
Return the current video mode information.
@param This Protocol instance pointer.
@param HorizontalResolution Current video horizontal resolution in pixels
@param VerticalResolution Current video vertical resolution in pixels
@param ColorDepth Current video color depth in bits per pixel
@param RefreshRate Current video refresh rate in Hz.
@retval EFI_SUCCESS Mode information returned.
@retval EFI_NOT_STARTED Video display is not initialized. Call SetMode ()
@retval EFI_OUT_OF_RESOURCES Out of resources.
**/
EFI_STATUS
EFIAPI
ConSpliterUgaDrawSetMode (
IN EFI_UGA_DRAW_PROTOCOL *This,
IN UINT32 HorizontalResolution,
IN UINT32 VerticalResolution,
IN UINT32 ColorDepth,
IN UINT32 RefreshRate
)
{
EFI_STATUS Status;
TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
UINTN Index;
EFI_STATUS ReturnStatus;
UINTN Size;
EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;
UINTN NumberIndex;
UINTN SizeOfInfo;
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info;
EFI_UGA_DRAW_PROTOCOL *UgaDraw;
Private = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
//
// UgaDevNullSetMode ()
//
ReturnStatus = EFI_SUCCESS;
//
// Free the old version
//
if (Private->UgaBlt != NULL) {
FreePool (Private->UgaBlt);
}
//
// Allocate the virtual Blt buffer
//
Size = HorizontalResolution * VerticalResolution * sizeof (EFI_UGA_PIXEL);
Private->UgaBlt = AllocateZeroPool (Size);
if (Private->UgaBlt == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Update the Mode data
//
Private->UgaHorizontalResolution = HorizontalResolution;
Private->UgaVerticalResolution = VerticalResolution;
Private->UgaColorDepth = ColorDepth;
Private->UgaRefreshRate = RefreshRate;
if (Private->ConsoleOutputMode != EfiConsoleControlScreenGraphics) {
return ReturnStatus;
}
//
// return the worst status met
//
for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
ReturnStatus = EFI_UNSUPPORTED;
if (FeaturePcdGet (PcdUgaConsumeSupport)) {
UgaDraw = Private->TextOutList[Index].UgaDraw;
if (UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) {
Status = UgaDraw->SetMode (
UgaDraw,
HorizontalResolution,
VerticalResolution,
ColorDepth,
RefreshRate
);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
}
}
}
if (EFI_ERROR (ReturnStatus)) {
GraphicsOutput = Private->TextOutList[Index].GraphicsOutput;
if (GraphicsOutput != NULL) {
//
// Find corresponding ModeNumber of this GraphicsOutput instance
//
for (NumberIndex = 0; NumberIndex < GraphicsOutput->Mode->MaxMode; NumberIndex ++) {
Status = GraphicsOutput->QueryMode (GraphicsOutput, (UINT32) NumberIndex, &SizeOfInfo, &Info);
if (EFI_ERROR (Status)) {
return Status;
}
if ((Info->HorizontalResolution == HorizontalResolution) && (Info->VerticalResolution == VerticalResolution)) {
FreePool (Info);
break;
}
FreePool (Info);
}
Status = GraphicsOutput->SetMode (GraphicsOutput, (UINT32) NumberIndex);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
}
}
}
}
return ReturnStatus;
}
/**
The following table defines actions for BltOperations.
EfiBltVideoFill - Write data from the BltBuffer pixel (SourceX, SourceY)
directly to every pixel of the video display rectangle
(DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height).
Only one pixel will be used from the BltBuffer. Delta is NOT used.
EfiBltVideoToBltBuffer - Read data from the video display rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in
the BltBuffer rectangle (DestinationX, DestinationY )
(DestinationX + Width, DestinationY + Height). If DestinationX or
DestinationY is not zero then Delta must be set to the length in bytes
of a row in the BltBuffer.
EfiBltBufferToVideo - Write data from the BltBuffer rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the
video display rectangle (DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height). If SourceX or SourceY is
not zero then Delta must be set to the length in bytes of a row in the
BltBuffer.
EfiBltVideoToVideo - Copy from the video display rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) .
to the video display rectangle (DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height).
The BltBuffer and Delta are not used in this mode.
@param Private 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
DevNullUgaBlt (
IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
IN EFI_UGA_PIXEL *BltBuffer, OPTIONAL
IN EFI_UGA_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
)
{
UINTN SrcY;
BOOLEAN Forward;
UINTN Index;
EFI_UGA_PIXEL *BltPtr;
EFI_UGA_PIXEL *ScreenPtr;
UINT32 HorizontalResolution;
UINT32 VerticalResolution;
if ((BltOperation < 0) || (BltOperation >= EfiUgaBltMax)) {
return EFI_INVALID_PARAMETER;
}
if (Width == 0 || Height == 0) {
return EFI_INVALID_PARAMETER;
}
if (Delta == 0) {
Delta = Width * sizeof (EFI_UGA_PIXEL);
}
HorizontalResolution = Private->UgaHorizontalResolution;
VerticalResolution = Private->UgaVerticalResolution;
//
// We need to fill the Virtual Screen buffer with the blt data.
//
if (BltOperation == EfiUgaVideoToBltBuffer) {
//
// Video to BltBuffer: Source is Video, destination is BltBuffer
//
if ((SourceY + Height) > VerticalResolution) {
return EFI_INVALID_PARAMETER;
}
if ((SourceX + Width) > HorizontalResolution) {
return EFI_INVALID_PARAMETER;
}
BltPtr = (EFI_UGA_PIXEL *) ((UINT8 *) BltBuffer + DestinationY * Delta + DestinationX * sizeof (EFI_UGA_PIXEL));
ScreenPtr = &Private->UgaBlt[SourceY * HorizontalResolution + SourceX];
while (Height > 0) {
CopyMem (BltPtr, ScreenPtr, Width * sizeof (EFI_UGA_PIXEL));
BltPtr = (EFI_UGA_PIXEL *) ((UINT8 *) BltPtr + Delta);
ScreenPtr += HorizontalResolution;
Height--;
}
} else {
//
// BltBuffer to Video: Source is BltBuffer, destination is Video
//
if (DestinationY + Height > VerticalResolution) {
return EFI_INVALID_PARAMETER;
}
if (DestinationX + Width > HorizontalResolution) {
return EFI_INVALID_PARAMETER;
}
if ((BltOperation == EfiUgaVideoToVideo) && (DestinationY > SourceY)) {
//
// Copy backwards, only care the Video to Video Blt
//
ScreenPtr = &Private->UgaBlt[(DestinationY + Height - 1) * HorizontalResolution + DestinationX];
SrcY = SourceY + Height - 1;
Forward = FALSE;
} else {
//
// Copy forwards, for other cases
//
ScreenPtr = &Private->UgaBlt[DestinationY * HorizontalResolution + DestinationX];
SrcY = SourceY;
Forward = TRUE;
}
while (Height != 0) {
if (BltOperation == EfiUgaVideoFill) {
for (Index = 0; Index < Width; Index++) {
ScreenPtr[Index] = *BltBuffer;
}
} else {
if (BltOperation == EfiUgaBltBufferToVideo) {
BltPtr = (EFI_UGA_PIXEL *) ((UINT8 *) BltBuffer + SrcY * Delta + SourceX * sizeof (EFI_UGA_PIXEL));
} else {
BltPtr = &Private->UgaBlt[SrcY * HorizontalResolution + SourceX];
}
CopyMem (ScreenPtr, BltPtr, Width * sizeof (EFI_UGA_PIXEL));
}
if (Forward) {
ScreenPtr += HorizontalResolution;
SrcY ++;
} else {
ScreenPtr -= HorizontalResolution;
SrcY --;
}
Height--;
}
}
return EFI_SUCCESS;
}
/**
The following table defines actions for BltOperations.
EfiUgaVideoFill - Write data from the BltBuffer pixel (SourceX, SourceY)
directly to every pixel of the video display rectangle
(DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height).
Only one pixel will be used from the BltBuffer. Delta is NOT used.
EfiUgaVideoToBltBuffer - Read data from the video display rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in
the BltBuffer rectangle (DestinationX, DestinationY )
(DestinationX + Width, DestinationY + Height). If DestinationX or
DestinationY is not zero then Delta must be set to the length in bytes
of a row in the BltBuffer.
EfiUgaBltBufferToVideo - Write data from the BltBuffer rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the
video display rectangle (DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height). If SourceX or SourceY is
not zero then Delta must be set to the length in bytes of a row in the
BltBuffer.
EfiUgaVideoToVideo - Copy from the video display rectangle
(SourceX, SourceY) (SourceX + Width, SourceY + Height) .
to the video display rectangle (DestinationX, DestinationY)
(DestinationX + Width, DestinationY + Height).
The BltBuffer and Delta are not used in this mode.
@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_UGA_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
ConSpliterUgaDrawBlt (
IN EFI_UGA_DRAW_PROTOCOL *This,
IN EFI_UGA_PIXEL *BltBuffer, OPTIONAL
IN EFI_UGA_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
)
{
EFI_STATUS Status;
TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
UINTN Index;
EFI_STATUS ReturnStatus;
EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;
Private = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
//
// Sync up DevNull UGA device
//
ReturnStatus = DevNullUgaBlt (
Private,
BltBuffer,
BltOperation,
SourceX,
SourceY,
DestinationX,
DestinationY,
Width,
Height,
Delta
);
if (Private->ConsoleOutputMode != EfiConsoleControlScreenGraphics) {
return ReturnStatus;
}
//
// return the worst status met
//
for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
GraphicsOutput = Private->TextOutList[Index].GraphicsOutput;
if (GraphicsOutput != NULL) {
Status = GraphicsOutput->Blt (
GraphicsOutput,
(EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) BltBuffer,
(EFI_GRAPHICS_OUTPUT_BLT_OPERATION) BltOperation,
SourceX,
SourceY,
DestinationX,
DestinationY,
Width,
Height,
Delta
);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
} else if (BltOperation == EfiBltVideoToBltBuffer) {
//
// Only need to read the data into buffer one time
//
return EFI_SUCCESS;
}
}
if (Private->TextOutList[Index].UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) {
Status = Private->TextOutList[Index].UgaDraw->Blt (
Private->TextOutList[Index].UgaDraw,
BltBuffer,
BltOperation,
SourceX,
SourceY,
DestinationX,
DestinationY,
Width,
Height,
Delta
);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
} else if (BltOperation == EfiUgaVideoToBltBuffer) {
//
// Only need to read the data into buffer one time
//
return EFI_SUCCESS;
}
}
}
return ReturnStatus;
}
/**
Write data from the buffer to video display based on UGA Draw setting.
@param Private Consplitter Text Out pointer.
@param GraphicsOutput Graphics Output protocol pointer.
@param UgaDraw UGA Draw protocol pointer.
@retval EFI_UNSUPPORTED No graphics devcie available .
@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
DevNullUgaSync (
IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput,
IN EFI_UGA_DRAW_PROTOCOL *UgaDraw
)
{
if (UgaDraw != NULL && FeaturePcdGet (PcdUgaConsumeSupport)) {
return UgaDraw->Blt (
UgaDraw,
Private->UgaBlt,
EfiUgaBltBufferToVideo,
0,
0,
0,
0,
Private->UgaHorizontalResolution,
Private->UgaVerticalResolution,
Private->UgaHorizontalResolution * sizeof (EFI_UGA_PIXEL)
);
} else if (GraphicsOutput != NULL) {
return GraphicsOutput->Blt (
GraphicsOutput,
(EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) Private->UgaBlt,
EfiBltBufferToVideo,
0,
0,
0,
0,
Private->UgaHorizontalResolution,
Private->UgaVerticalResolution,
0
);
} else {
return EFI_UNSUPPORTED;
}
}
/**
Write a Unicode string to the output device.
@param Private Pointer to the console output splitter's private
data. It indicates the calling context.
@param WString The NULL-terminated Unicode string to be
displayed on the output device(s). All output
devices must also support the Unicode drawing
defined in this file.
@retval EFI_SUCCESS The string was output to the device.
@retval EFI_DEVICE_ERROR The device reported an error while attempting to
output the text.
@retval EFI_UNSUPPORTED The output device's mode is not currently in a
defined text mode.
@retval EFI_WARN_UNKNOWN_GLYPH This warning code indicates that some of the
characters in the Unicode string could not be
rendered and were skipped.
**/
EFI_STATUS
DevNullTextOutOutputString (
IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
IN CHAR16 *WString
)
{
UINTN SizeScreen;
UINTN SizeAttribute;
UINTN Index;
EFI_SIMPLE_TEXT_OUTPUT_MODE *Mode;
CHAR16 *Screen;
CHAR16 *NullScreen;
CHAR16 InsertChar;
CHAR16 TempChar;
CHAR16 *PStr;
INT32 *Attribute;
INT32 *NullAttributes;
INT32 CurrentWidth;
UINTN LastRow;
UINTN MaxColumn;
Mode = &Private->TextOutMode;
NullScreen = Private->DevNullScreen;
NullAttributes = Private->DevNullAttributes;
LastRow = Private->DevNullRows - 1;
MaxColumn = Private->DevNullColumns;
if (Mode->Attribute & EFI_WIDE_ATTRIBUTE) {
CurrentWidth = 2;
} else {
CurrentWidth = 1;
}
while (*WString != L'\0') {
if (*WString == CHAR_BACKSPACE) {
//
// If the cursor is at the left edge of the display, then move the cursor
// one row up.
//
if (Mode->CursorColumn == 0 && Mode->CursorRow > 0) {
Mode->CursorRow--;
Mode->CursorColumn = (INT32) MaxColumn;
}
//
// If the cursor is not at the left edge of the display,
// then move the cursor left one column.
//
if (Mode->CursorColumn > 0) {
Mode->CursorColumn--;
if (Mode->CursorColumn > 0 &&
NullAttributes[Mode->CursorRow * MaxColumn + Mode->CursorColumn - 1] & EFI_WIDE_ATTRIBUTE
) {
Mode->CursorColumn--;
//
// Insert an extra backspace
//
InsertChar = CHAR_BACKSPACE;
PStr = WString + 1;
while (*PStr != L'\0') {
TempChar = *PStr;
*PStr = InsertChar;
InsertChar = TempChar;
PStr++;
}
*PStr = InsertChar;
*(++PStr) = 0;
WString++;
}
}
WString++;
} else if (*WString == CHAR_LINEFEED) {
//
// If the cursor is at the bottom of the display,
// then scroll the display one row, and do not update
// the cursor position. Otherwise, move the cursor down one row.
//
if (Mode->CursorRow == (INT32) (LastRow)) {
//
// Scroll Screen Up One Row
//
SizeAttribute = LastRow * MaxColumn;
CopyMem (
NullAttributes,
NullAttributes + MaxColumn,
SizeAttribute * sizeof (INT32)
);
//
// Each row has an ending CHAR_NULL. So one more character each line
// for DevNullScreen than DevNullAttributes
//
SizeScreen = SizeAttribute + LastRow;
CopyMem (
NullScreen,
NullScreen + (MaxColumn + 1),
SizeScreen * sizeof (CHAR16)
);
//
// Print Blank Line at last line
//
Screen = NullScreen + SizeScreen;
Attribute = NullAttributes + SizeAttribute;
for (Index = 0; Index < MaxColumn; Index++, Screen++, Attribute++) {
*Screen = ' ';
*Attribute = Mode->Attribute;
}
} else {
Mode->CursorRow++;
}
WString++;
} else if (*WString == CHAR_CARRIAGE_RETURN) {
//
// Move the cursor to the beginning of the current row.
//
Mode->CursorColumn = 0;
WString++;
} else {
//
// Print the character at the current cursor position and
// move the cursor right one column. If this moves the cursor
// past the right edge of the display, then the line should wrap to
// the beginning of the next line. This is equivalent to inserting
// a CR and an LF. Note that if the cursor is at the bottom of the
// display, and the line wraps, then the display will be scrolled
// one line.
//
Index = Mode->CursorRow * MaxColumn + Mode->CursorColumn;
while (Mode->CursorColumn < (INT32) MaxColumn) {
if (*WString == CHAR_NULL) {
break;
}
if (*WString == CHAR_BACKSPACE) {
break;
}
if (*WString == CHAR_LINEFEED) {
break;
}
if (*WString == CHAR_CARRIAGE_RETURN) {
break;
}
if (*WString == UNICODE_WIDE_CHAR || *WString == UNICODE_NARROW_CHAR) {
CurrentWidth = (*WString == UNICODE_WIDE_CHAR) ? 2 : 1;
WString++;
continue;
}
if (Mode->CursorColumn + CurrentWidth > (INT32) MaxColumn) {
//
// If a wide char is at the rightmost column, then move the char
// to the beginning of the next row
//
NullScreen[Index + Mode->CursorRow] = L' ';
NullAttributes[Index] = Mode->Attribute | (UINT32) EFI_WIDE_ATTRIBUTE;
Index++;
Mode->CursorColumn++;
} else {
NullScreen[Index + Mode->CursorRow] = *WString;
NullAttributes[Index] = Mode->Attribute;
if (CurrentWidth == 1) {
NullAttributes[Index] &= (~ (UINT32) EFI_WIDE_ATTRIBUTE);
} else {
NullAttributes[Index] |= (UINT32) EFI_WIDE_ATTRIBUTE;
NullAttributes[Index + 1] &= (~ (UINT32) EFI_WIDE_ATTRIBUTE);
}
Index += CurrentWidth;
WString++;
Mode->CursorColumn += CurrentWidth;
}
}
//
// At the end of line, output carriage return and line feed
//
if (Mode->CursorColumn >= (INT32) MaxColumn) {
DevNullTextOutOutputString (Private, mCrLfString);
}
}
}
return EFI_SUCCESS;
}
/**
Sets the output device(s) to a specified mode.
@param Private Private data structure pointer.
@param ModeNumber The mode number to set.
@retval EFI_SUCCESS The requested text mode was set.
@retval EFI_DEVICE_ERROR The device had an error and could not complete
the request.
@retval EFI_UNSUPPORTED The mode number was not valid.
@retval EFI_OUT_OF_RESOURCES Out of resources.
**/
EFI_STATUS
DevNullTextOutSetMode (
IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
IN UINTN ModeNumber
)
{
UINTN Size;
INT32 CurrentMode;
UINTN Row;
UINTN Column;
TEXT_OUT_SPLITTER_QUERY_DATA *Mode;
//
// No extra check for ModeNumber here, as it has been checked in
// ConSplitterTextOutSetMode. And mode 0 should always be supported.
// Row and Column should be fetched from intersection map.
//
if (Private->TextOutModeMap != NULL) {
CurrentMode = *(Private->TextOutModeMap + Private->TextOutListCount * ModeNumber);
} else {
CurrentMode = (INT32)(ModeNumber);
}
Mode = &(Private->TextOutQueryData[CurrentMode]);
Row = Mode->Rows;
Column = Mode->Columns;
if (Row <= 0 && Column <= 0) {
return EFI_UNSUPPORTED;
}
if (Private->TextOutMode.Mode != (INT32) ModeNumber) {
Private->TextOutMode.Mode = (INT32) ModeNumber;
Private->DevNullColumns = Column;
Private->DevNullRows = Row;
if (Private->DevNullScreen != NULL) {
FreePool (Private->DevNullScreen);
}
Size = (Row * (Column + 1)) * sizeof (CHAR16);
Private->DevNullScreen = AllocateZeroPool (Size);
if (Private->DevNullScreen == NULL) {
return EFI_OUT_OF_RESOURCES;
}
if (Private->DevNullAttributes != NULL) {
FreePool (Private->DevNullAttributes);
}
Size = Row * Column * sizeof (INT32);
Private->DevNullAttributes = AllocateZeroPool (Size);
if (Private->DevNullAttributes == NULL) {
return EFI_OUT_OF_RESOURCES;
}
}
DevNullTextOutClearScreen (Private);
return EFI_SUCCESS;
}
/**
Clears the output device(s) display to the currently selected background
color.
@param Private Protocol instance pointer.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_DEVICE_ERROR The device had an error and could not complete
the request.
@retval EFI_UNSUPPORTED The output device is not in a valid text mode.
**/
EFI_STATUS
DevNullTextOutClearScreen (
IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private
)
{
UINTN Row;
UINTN Column;
CHAR16 *Screen;
INT32 *Attributes;
INT32 CurrentAttribute;
//
// Clear the DevNull Text Out Buffers.
// The screen is filled with spaces.
// The attributes are all synced with the current Simple Text Out Attribute
//
Screen = Private->DevNullScreen;
Attributes = Private->DevNullAttributes;
CurrentAttribute = Private->TextOutMode.Attribute;
for (Row = 0; Row < Private->DevNullRows; Row++) {
for (Column = 0; Column < Private->DevNullColumns; Column++, Screen++, Attributes++) {
*Screen = ' ';
*Attributes = CurrentAttribute;
}
//
// Each line of the screen has a NULL on the end so we must skip over it
//
Screen++;
}
DevNullTextOutSetCursorPosition (Private, 0, 0);
return DevNullTextOutEnableCursor (Private, TRUE);
}
/**
Sets the current coordinates of the cursor position.
@param Private Protocol instance pointer.
@param Column
@param Row the position to set the cursor to. Must be
greater than or equal to zero and less than the
number of columns and rows by QueryMode ().
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_DEVICE_ERROR The device had an error and could not complete
the request.
@retval EFI_UNSUPPORTED The output device is not in a valid text mode, or
the cursor position is invalid for the current
mode.
**/
EFI_STATUS
DevNullTextOutSetCursorPosition (
IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
IN UINTN Column,
IN UINTN Row
)
{
//
// No need to do extra check here as whether (Column, Row) is valid has
// been checked in ConSplitterTextOutSetCursorPosition. And (0, 0) should
// always be supported.
//
Private->TextOutMode.CursorColumn = (INT32) Column;
Private->TextOutMode.CursorRow = (INT32) Row;
return EFI_SUCCESS;
}
/**
Implements SIMPLE_TEXT_OUTPUT.EnableCursor().
In this driver, the cursor cannot be hidden.
@param Private Indicates the calling context.
@param Visible If TRUE, the cursor is set to be visible, If
FALSE, the cursor is set to be invisible.
@retval EFI_SUCCESS The request is valid.
**/
EFI_STATUS
DevNullTextOutEnableCursor (
IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
IN BOOLEAN Visible
)
{
Private->TextOutMode.CursorVisible = Visible;
return EFI_SUCCESS;
}
/**
Take the DevNull TextOut device and update the Simple Text Out on every
UGA device.
@param Private Indicates the calling context.
@retval EFI_SUCCESS The request is valid.
@retval other Return status of TextOut->OutputString ()
**/
EFI_STATUS
DevNullSyncStdOut (
IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private
)
{
EFI_STATUS Status;
EFI_STATUS ReturnStatus;
UINTN Row;
UINTN Column;
UINTN List;
UINTN MaxColumn;
UINTN CurrentColumn;
UINTN StartRow;
UINTN StartColumn;
INT32 StartAttribute;
BOOLEAN StartCursorState;
CHAR16 *Screen;
CHAR16 *Str;
CHAR16 *Buffer;
CHAR16 *BufferTail;
CHAR16 *ScreenStart;
INT32 CurrentAttribute;
INT32 *Attributes;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *Sto;
//
// Save the devices Attributes, Cursor enable state and location
//
StartColumn = Private->TextOutMode.CursorColumn;
StartRow = Private->TextOutMode.CursorRow;
StartAttribute = Private->TextOutMode.Attribute;
StartCursorState = Private->TextOutMode.CursorVisible;
for (List = 0; List < Private->CurrentNumberOfConsoles; List++) {
Sto = Private->TextOutList[List].TextOut;
//
// Skip non GOP/UGA devices
//
if ((Private->TextOutList[List].GraphicsOutput != NULL) || (Private->TextOutList[List].UgaDraw != NULL)) {
Sto->EnableCursor (Sto, FALSE);
Sto->ClearScreen (Sto);
}
}
ReturnStatus = EFI_SUCCESS;
Screen = Private->DevNullScreen;
Attributes = Private->DevNullAttributes;
MaxColumn = Private->DevNullColumns;
Buffer = AllocateZeroPool ((MaxColumn + 1) * sizeof (CHAR16));
if (Buffer == NULL) {
return ReturnStatus;
}
for (Row = 0; Row < Private->DevNullRows; Row++, Screen += (MaxColumn + 1), Attributes += MaxColumn) {
if (Row == (Private->DevNullRows - 1)) {
//
// Don't ever sync the last character as it will scroll the screen
//
Screen[MaxColumn - 1] = 0x00;
}
Column = 0;
while (Column < MaxColumn) {
if (Screen[Column] > 0) {
CurrentAttribute = Attributes[Column];
CurrentColumn = Column;
ScreenStart = &Screen[Column];
//
// the line end is alway 0x0. So Column should be less than MaxColumn
// It should be still in the same row
//
for (Str = ScreenStart, BufferTail = Buffer; *Str != 0; Str++, Column++) {
if (Attributes[Column] != CurrentAttribute) {
Column--;
break;
}
*BufferTail = *Str;
BufferTail++;
if ((Attributes[Column] & EFI_WIDE_ATTRIBUTE) != 0) {
Str++;
Column++;
}
}
*BufferTail = 0;
for (List = 0; List < Private->CurrentNumberOfConsoles; List++) {
Sto = Private->TextOutList[List].TextOut;
//
// Skip non GOP/UGA devices
//
if ((Private->TextOutList[List].GraphicsOutput != NULL) || (Private->TextOutList[List].UgaDraw != NULL)) {
Sto->SetAttribute (Sto, CurrentAttribute);
Sto->SetCursorPosition (Sto, CurrentColumn, Row);
Status = Sto->OutputString (Sto, Buffer);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
}
}
}
}
Column++;
}
}
//
// Restore the devices Attributes, Cursor enable state and location
//
for (List = 0; List < Private->CurrentNumberOfConsoles; List++) {
Sto = Private->TextOutList[List].TextOut;
//
// Skip non GOP/UGA devices
//
if ((Private->TextOutList[List].GraphicsOutput != NULL) || (Private->TextOutList[List].UgaDraw != NULL)) {
Sto->SetAttribute (Sto, StartAttribute);
Sto->SetCursorPosition (Sto, StartColumn, StartRow);
Status = Sto->EnableCursor (Sto, StartCursorState);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
}
}
}
FreePool (Buffer);
return ReturnStatus;
}
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