diff options
Diffstat (limited to 'EdkModulePkg/Universal/Console/ConSplitter/Dxe/ConSplitterGraphics.c')
| -rw-r--r-- | EdkModulePkg/Universal/Console/ConSplitter/Dxe/ConSplitterGraphics.c | 1076 |
1 files changed, 1076 insertions, 0 deletions
diff --git a/EdkModulePkg/Universal/Console/ConSplitter/Dxe/ConSplitterGraphics.c b/EdkModulePkg/Universal/Console/ConSplitter/Dxe/ConSplitterGraphics.c new file mode 100644 index 0000000000..412d695d77 --- /dev/null +++ b/EdkModulePkg/Universal/Console/ConSplitter/Dxe/ConSplitterGraphics.c @@ -0,0 +1,1076 @@ +/*++
+
+Copyright (c) 2006, Intel Corporation
+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:
+
+ ConSplitterGraphics.c
+
+Abstract:
+
+ Support for ConsoleControl protocol. Support for UGA Draw 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
+
+--*/
+
+
+#include "ConSplitter.h"
+
+static CHAR16 mCrLfString[3] = { CHAR_CARRIAGE_RETURN, CHAR_LINEFEED, CHAR_NULL };
+
+EFI_STATUS
+EFIAPI
+ConSpliterConsoleControlGetMode (
+ IN EFI_CONSOLE_CONTROL_PROTOCOL *This,
+ OUT EFI_CONSOLE_CONTROL_SCREEN_MODE *Mode,
+ OUT BOOLEAN *UgaExists,
+ OUT BOOLEAN *StdInLocked
+ )
+/*++
+
+ Routine Description:
+ Return the current video mode information. Also returns info about existence
+ of 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.
+
+ Arguments:
+ This - Protocol instance pointer.
+ Mode - Are we in text of grahics mode.
+ UgaExists - TRUE if UGA Spliter has found a UGA device
+ StdInLocked - TRUE if StdIn device is keyboard locked
+
+ Returns:
+ EFI_SUCCESS - Mode information returned.
+ EFI_INVALID_PARAMETER - Invalid parameters.
+
+--*/
+{
+ 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->UgaMode;
+
+ if (UgaExists != NULL) {
+ *UgaExists = FALSE;
+ for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
+ if (Private->TextOutList[Index].UgaDraw != NULL) {
+ *UgaExists = TRUE;
+ break;
+ }
+ }
+ }
+
+ if (StdInLocked != NULL) {
+ *StdInLocked = ConSpliterConssoleControlStdInLocked ();
+ }
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+ConSpliterConsoleControlSetMode (
+ IN EFI_CONSOLE_CONTROL_PROTOCOL *This,
+ IN EFI_CONSOLE_CONTROL_SCREEN_MODE Mode
+ )
+/*++
+
+ Routine Description:
+ Set the current mode to either text or graphics. Graphics is
+ for Quiet Boot.
+
+ Arguments:
+ This - Protocol instance pointer.
+ Mode - Mode to set the
+
+ Returns:
+ EFI_SUCCESS - Mode information returned.
+ EFI_INVALID_PARAMETER - Invalid parameter.
+ EFI_UNSUPPORTED - Operation unsupported.
+
+--*/
+{
+ TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
+ UINTN Index;
+ TEXT_OUT_AND_UGA_DATA *TextAndUga;
+ BOOLEAN Supported;
+
+ Private = CONSOLE_CONTROL_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Mode >= EfiConsoleControlScreenMaxValue) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Supported = FALSE;
+ TextAndUga = &Private->TextOutList[0];
+ for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++, TextAndUga++) {
+ if (TextAndUga->UgaDraw != NULL) {
+ Supported = TRUE;
+ break;
+ }
+ }
+
+ if ((!Supported) && (Mode == EfiConsoleControlScreenGraphics)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ Private->UgaMode = Mode;
+
+ TextAndUga = &Private->TextOutList[0];
+ for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++, TextAndUga++) {
+
+ TextAndUga->TextOutEnabled = TRUE;
+ //
+ // If we are going into Graphics mode disable ConOut to any UGA device
+ //
+ if ((Mode == EfiConsoleControlScreenGraphics) && (TextAndUga->UgaDraw != NULL)) {
+ TextAndUga->TextOutEnabled = FALSE;
+ DevNullUgaSync (Private, TextAndUga->UgaDraw);
+ }
+ }
+
+ if (Mode == EfiConsoleControlScreenText) {
+ DevNullSyncUgaStdOut (Private);
+ }
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+ConSpliterUgaDrawGetMode (
+ IN EFI_UGA_DRAW_PROTOCOL *This,
+ OUT UINT32 *HorizontalResolution,
+ OUT UINT32 *VerticalResolution,
+ OUT UINT32 *ColorDepth,
+ OUT UINT32 *RefreshRate
+ )
+/*++
+
+ Routine Description:
+ Return the current video mode information.
+
+ Arguments:
+ This - Protocol instance pointer.
+ HorizontalResolution - Current video horizontal resolution in pixels
+ VerticalResolution - Current video vertical resolution in pixels
+ ColorDepth - Current video color depth in bits per pixel
+ RefreshRate - Current video refresh rate in Hz.
+
+ Returns:
+ EFI_SUCCESS - Mode information returned.
+ EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()
+ EFI_INVALID_PARAMETER - One of the input args was NULL.
+
+--*/
+{
+ TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
+
+ if (!(HorizontalResolution && VerticalResolution && RefreshRate && ColorDepth)) {
+ 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;
+}
+
+EFI_STATUS
+EFIAPI
+ConSpliterUgaDrawSetMode (
+ IN EFI_UGA_DRAW_PROTOCOL *This,
+ IN UINT32 HorizontalResolution,
+ IN UINT32 VerticalResolution,
+ IN UINT32 ColorDepth,
+ IN UINT32 RefreshRate
+ )
+/*++
+
+ Routine Description:
+ Return the current video mode information.
+
+ Arguments:
+ This - Protocol instance pointer.
+ HorizontalResolution - Current video horizontal resolution in pixels
+ VerticalResolution - Current video vertical resolution in pixels
+ ColorDepth - Current video color depth in bits per pixel
+ RefreshRate - Current video refresh rate in Hz.
+
+ Returns:
+ EFI_SUCCESS - Mode information returned.
+ EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()
+ EFI_OUT_OF_RESOURCES - Out of resources.
+
+--*/
+{
+ EFI_STATUS Status;
+ TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
+ UINTN Index;
+ EFI_STATUS ReturnStatus;
+ UINTN Size;
+
+ Private = UGA_DRAW_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
+
+ //
+ // UgaDevNullSetMode ()
+ //
+ ReturnStatus = EFI_SUCCESS;
+
+ //
+ // Free the old version
+ //
+ gBS->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->UgaMode != EfiConsoleControlScreenGraphics) {
+ return ReturnStatus;
+ }
+ //
+ // return the worst status met
+ //
+ for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
+ if (Private->TextOutList[Index].UgaDraw != NULL) {
+ Status = Private->TextOutList[Index].UgaDraw->SetMode (
+ Private->TextOutList[Index].UgaDraw,
+ HorizontalResolution,
+ VerticalResolution,
+ ColorDepth,
+ RefreshRate
+ );
+ if (EFI_ERROR (Status)) {
+ ReturnStatus = Status;
+ }
+ }
+ }
+
+ return ReturnStatus;
+}
+
+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;
+ 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) {
+ 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;
+ }
+
+ ScreenPtr = &Private->UgaBlt[DestinationY * HorizontalResolution + DestinationX];
+ SrcY = SourceY;
+ while (Height) {
+ 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));
+ }
+
+ ScreenPtr += HorizontalResolution;
+ SrcY++;
+ Height--;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+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
+ )
+/*++
+
+ Routine Description:
+ 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.
+
+ Arguments:
+ This - Protocol instance pointer.
+ BltBuffer - Buffer containing data to blit into video buffer. This
+ buffer has a size of Width*Height*sizeof(EFI_UGA_PIXEL)
+ BltOperation - Operation to perform on BlitBuffer and video memory
+ SourceX - X coordinate of source for the BltBuffer.
+ SourceY - Y coordinate of source for the BltBuffer.
+ DestinationX - X coordinate of destination for the BltBuffer.
+ DestinationY - Y coordinate of destination for the BltBuffer.
+ Width - Width of rectangle in BltBuffer in pixels.
+ Height - Hight of rectangle in BltBuffer in pixels.
+ Delta -
+
+ Returns:
+ EFI_SUCCESS - The Blt operation completed.
+ EFI_INVALID_PARAMETER - BltOperation is not valid.
+ EFI_DEVICE_ERROR - A hardware error occured writting to the video
+ buffer.
+
+--*/
+{
+ EFI_STATUS Status;
+ TEXT_OUT_SPLITTER_PRIVATE_DATA *Private;
+ UINTN Index;
+ EFI_STATUS ReturnStatus;
+
+ 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->UgaMode != EfiConsoleControlScreenGraphics) {
+ return ReturnStatus;
+ }
+ //
+ // return the worst status met
+ //
+ for (Index = 0; Index < Private->CurrentNumberOfConsoles; Index++) {
+ if (Private->TextOutList[Index].UgaDraw != NULL) {
+ 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;
+}
+
+EFI_STATUS
+DevNullUgaSync (
+ IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
+ IN EFI_UGA_DRAW_PROTOCOL *UgaDraw
+ )
+{
+ return UgaDraw->Blt (
+ UgaDraw,
+ Private->UgaBlt,
+ EfiUgaBltBufferToVideo,
+ 0,
+ 0,
+ 0,
+ 0,
+ Private->UgaHorizontalResolution,
+ Private->UgaVerticalResolution,
+ Private->UgaHorizontalResolution * sizeof (EFI_UGA_PIXEL)
+ );
+}
+
+EFI_STATUS
+DevNullTextOutOutputString (
+ IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
+ IN CHAR16 *WString
+ )
+/*++
+
+ Routine Description:
+ Write a Unicode string to the output device.
+
+ Arguments:
+ Private - Pointer to the console output splitter's private data. It
+ indicates the calling context.
+ 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.
+
+ Returns:
+ EFI_SUCCESS - The string was output to the device.
+ EFI_DEVICE_ERROR - The device reported an error while attempting to
+ output the text.
+ EFI_UNSUPPORTED - The output device's mode is not currently in a
+ defined text mode.
+ EFI_WARN_UNKNOWN_GLYPH - This warning code indicates that some of the
+ characters in the Unicode string could not be
+ rendered and were skipped.
+
+--*/
+{
+ 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) {
+
+ 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) {
+ 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 == WIDE_CHAR || *WString == NARROW_CHAR) {
+ CurrentWidth = (*WString == 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;
+}
+
+EFI_STATUS
+DevNullTextOutSetMode (
+ IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
+ IN UINTN ModeNumber
+ )
+/*++
+
+ Routine Description:
+ Sets the output device(s) to a specified mode.
+
+ Arguments:
+ Private - Private data structure pointer.
+ ModeNumber - The mode number to set.
+
+ Returns:
+ EFI_SUCCESS - The requested text mode was set.
+ EFI_DEVICE_ERROR - The device had an error and
+ could not complete the request.
+ EFI_UNSUPPORTED - The mode number was not valid.
+ EFI_OUT_OF_RESOURCES - Out of resources.
+
+--*/
+{
+ UINTN Size;
+ 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.
+ //
+ Mode = &(Private->TextOutQueryData[ModeNumber]);
+ Row = Mode->Rows;
+ Column = Mode->Columns;
+
+ if (Row <= 0 && Column <= 0) {
+ return EFI_UNSUPPORTED;
+ }
+
+ if (Private->DevNullColumns != Column || Private->DevNullRows != Row) {
+
+ Private->TextOutMode.Mode = (INT32) ModeNumber;
+ Private->DevNullColumns = Column;
+ Private->DevNullRows = Row;
+
+ gBS->FreePool (Private->DevNullScreen);
+
+ Size = (Row * (Column + 1)) * sizeof (CHAR16);
+ Private->DevNullScreen = AllocateZeroPool (Size);
+ if (Private->DevNullScreen == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ gBS->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;
+}
+
+EFI_STATUS
+DevNullTextOutClearScreen (
+ IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private
+ )
+/*++
+
+ Routine Description:
+ Clears the output device(s) display to the currently selected background
+ color.
+
+ Arguments:
+ Private - Protocol instance pointer.
+
+ Returns:
+ EFI_SUCCESS - The operation completed successfully.
+ EFI_DEVICE_ERROR - The device had an error and
+ could not complete the request.
+ EFI_UNSUPPORTED - The output device is not in a valid text mode.
+
+--*/
+{
+ 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);
+}
+
+EFI_STATUS
+DevNullTextOutSetCursorPosition (
+ IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
+ IN UINTN Column,
+ IN UINTN Row
+ )
+/*++
+
+ Routine Description:
+ Sets the current coordinates of the cursor position
+
+ Arguments:
+ Private - Protocol instance pointer.
+ Column, 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 ().
+
+ Returns:
+ EFI_SUCCESS - The operation completed successfully.
+ EFI_DEVICE_ERROR - The device had an error and
+ could not complete the request.
+ EFI_UNSUPPORTED - The output device is not in a valid text mode, or the
+ cursor position is invalid for the current mode.
+
+--*/
+{
+ //
+ // 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;
+}
+
+EFI_STATUS
+DevNullTextOutEnableCursor (
+ IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private,
+ IN BOOLEAN Visible
+ )
+/*++
+ Routine Description:
+
+ Implements SIMPLE_TEXT_OUTPUT.EnableCursor().
+ In this driver, the cursor cannot be hidden.
+
+ Arguments:
+
+ Private - Indicates the calling context.
+
+ Visible - If TRUE, the cursor is set to be visible, If FALSE, the cursor
+ is set to be invisible.
+
+ Returns:
+
+ EFI_SUCCESS - The request is valid.
+
+
+--*/
+{
+ Private->TextOutMode.CursorVisible = Visible;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+DevNullSyncUgaStdOut (
+ IN TEXT_OUT_SPLITTER_PRIVATE_DATA *Private
+ )
+/*++
+ Routine Description:
+ Take the DevNull TextOut device and update the Simple Text Out on every
+ UGA device.
+
+ Arguments:
+ Private - Indicates the calling context.
+
+ Returns:
+ EFI_SUCCESS - The request is valid.
+ other - Return status of TextOut->OutputString ()
+
+--*/
+{
+ 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_OUT_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 UGA devices
+ //
+ if (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));
+
+ 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]) {
+ 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) {
+ Str++;
+ Column++;
+ }
+ }
+
+ *BufferTail = 0;
+
+ for (List = 0; List < Private->CurrentNumberOfConsoles; List++) {
+
+ Sto = Private->TextOutList[List].TextOut;
+
+ //
+ // Skip non UGA devices
+ //
+ if (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 UGA devices
+ //
+ if (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;
+ }
+ }
+ }
+
+ gBS->FreePool (Buffer);
+
+ return ReturnStatus;
+}
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