Updated GraphicsConsole and Terminal driver text mode initialization routine for easy mode extension in future.

Signed-off-by: li-elvin
Reviewed-by: hhtian


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12787 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
li-elvin 2011-11-25 08:35:00 +00:00
parent 13535a3bda
commit 79d07c66d9
5 changed files with 330 additions and 135 deletions

View File

@ -41,16 +41,20 @@ GRAPHICS_CONSOLE_DEV mGraphicsConsoleDevTemplate = {
0,
TRUE
},
{
{ 80, 25, 0, 0, 0, 0, 0 }, // Mode 0
{ 80, 50, 0, 0, 0, 0, 0 }, // Mode 1
{ 100,31, 0, 0, 0, 0, 0 }, // Mode 2
{ 0, 0, 0, 0, 0, 0, 0 }, // Mode 3
{ 0, 0, 0, 0, 0, 0, 0 } // Mode 4
},
(GRAPHICS_CONSOLE_MODE_DATA *) NULL,
(EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) NULL
};
GRAPHICS_CONSOLE_MODE_DATA mGraphicsConsoleModeData[] = {
{100, 31},
//
// New modes can be added here.
// The last 2 entries are specific for PcdConOutRow x PcdConOutColumn and full screen mode.
//
{0, 0},
{0, 0}
};
EFI_HII_DATABASE_PROTOCOL *mHiiDatabase;
EFI_HII_FONT_PROTOCOL *mHiiFont;
EFI_HII_HANDLE mHiiHandle;
@ -210,6 +214,159 @@ Error:
return Status;
}
/**
Initialize all the text modes which the graphics console supports.
It returns information for available text modes that the graphics can support.
@param[in] HorizontalResolution The size of video screen in pixels in the X dimension.
@param[in] VerticalResolution The size of video screen in pixels in the Y dimension.
@param[in] GopModeNumber The graphics mode number which graphis console is based on.
@param[out] TextModeCount The total number of text modes that graphics console supports.
@param[out] TextModeData The buffer to the text modes column and row information.
Caller is responsible to free it when it's non-NULL.
@retval EFI_SUCCESS The supporting mode information is returned.
@retval EFI_INVALID_PARAMETER The parameters are invalid.
**/
EFI_STATUS
InitializeGraphicsConsoleTextMode (
IN UINT32 HorizontalResolution,
IN UINT32 VerticalResolution,
IN UINT32 GopModeNumber,
OUT UINTN *TextModeCount,
OUT GRAPHICS_CONSOLE_MODE_DATA **TextModeData
)
{
UINTN Index;
UINTN Count;
GRAPHICS_CONSOLE_MODE_DATA *ModeBuffer;
GRAPHICS_CONSOLE_MODE_DATA *NewModeBuffer;
UINTN ValidCount;
UINTN ValidIndex;
UINTN MaxColumns;
UINTN MaxRows;
if ((TextModeCount == NULL) || (TextModeData == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// Add PcdConOutColumn and PcdConOutRow to the last second entry.
//
Count = sizeof (mGraphicsConsoleModeData) / sizeof (GRAPHICS_CONSOLE_MODE_DATA);
mGraphicsConsoleModeData[Count - 2].Columns = (UINTN) PcdGet32 (PcdConOutColumn);
mGraphicsConsoleModeData[Count - 2].Rows = (UINTN) PcdGet32 (PcdConOutRow);
//
// Compute the maximum number of text Rows and Columns that this current graphics mode can support.
// To make graphics console work well, MaxColumns and MaxRows should not be zero.
//
MaxColumns = HorizontalResolution / EFI_GLYPH_WIDTH;
MaxRows = VerticalResolution / EFI_GLYPH_HEIGHT;
//
// Add full screen mode to the last entry.
//
mGraphicsConsoleModeData[Count - 1].Columns = MaxColumns;
mGraphicsConsoleModeData[Count - 1].Rows = MaxRows;
//
// Get defined mode buffer pointer.
//
ModeBuffer = mGraphicsConsoleModeData;
//
// Here we make sure that the final mode exposed does not include the duplicated modes,
// and does not include the invalid modes which exceed the max column and row.
// Reserve 2 modes for 80x25, 80x50 of graphics console.
//
NewModeBuffer = AllocateZeroPool (sizeof (GRAPHICS_CONSOLE_MODE_DATA) * (Count + 2));
ASSERT (NewModeBuffer != NULL);
//
// Mode 0 and mode 1 is for 80x25, 80x50 according to UEFI spec.
//
ValidCount = 0;
if ((MaxColumns >= 80) && (MaxRows >= 25)) {
//
// 80x25 can be supported.
//
NewModeBuffer[ValidCount].Columns = 80;
NewModeBuffer[ValidCount].Rows = 25;
} else {
//
// 80x25 cannot be supported, set PCD defined mode.
//
NewModeBuffer[ValidCount].Columns = (UINTN) PcdGet32 (PcdConOutColumn);
NewModeBuffer[ValidCount].Rows = (UINTN) PcdGet32 (PcdConOutRow);
}
NewModeBuffer[ValidCount].GopWidth = HorizontalResolution;
NewModeBuffer[ValidCount].GopHeight = VerticalResolution;
NewModeBuffer[ValidCount].GopModeNumber = GopModeNumber;
NewModeBuffer[ValidCount].DeltaX = (HorizontalResolution - (NewModeBuffer[ValidCount].Columns * EFI_GLYPH_WIDTH)) >> 1;
NewModeBuffer[ValidCount].DeltaY = (VerticalResolution - (NewModeBuffer[ValidCount].Rows * EFI_GLYPH_HEIGHT)) >> 1;
ValidCount++;
if ((MaxColumns >= 80) && (MaxRows >= 50)) {
NewModeBuffer[ValidCount].Columns = 80;
NewModeBuffer[ValidCount].Rows = 50;
NewModeBuffer[ValidCount].DeltaX = (HorizontalResolution - (80 * EFI_GLYPH_WIDTH)) >> 1;
NewModeBuffer[ValidCount].DeltaY = (VerticalResolution - (50 * EFI_GLYPH_HEIGHT)) >> 1;
}
NewModeBuffer[ValidCount].GopWidth = HorizontalResolution;
NewModeBuffer[ValidCount].GopHeight = VerticalResolution;
NewModeBuffer[ValidCount].GopModeNumber = GopModeNumber;
ValidCount++;
//
// Start from mode 2 to put the valid mode other than 80x25 and 80x50 in the output mode buffer.
//
for (Index = 0; Index < Count; Index++) {
if ((ModeBuffer[Index].Columns == 0) || (ModeBuffer[Index].Rows == 0) ||
(ModeBuffer[Index].Columns > MaxColumns) || (ModeBuffer[Index].Rows > MaxRows)) {
//
// Skip the pre-defined mode which is invalid or exceeds the max column and row.
//
continue;
}
for (ValidIndex = 0; ValidIndex < ValidCount; ValidIndex++) {
if ((ModeBuffer[Index].Columns == NewModeBuffer[ValidIndex].Columns) &&
(ModeBuffer[Index].Rows == NewModeBuffer[ValidIndex].Rows)) {
//
// Skip the duplicated mode.
//
break;
}
}
if (ValidIndex == ValidCount) {
NewModeBuffer[ValidCount].Columns = ModeBuffer[Index].Columns;
NewModeBuffer[ValidCount].Rows = ModeBuffer[Index].Rows;
NewModeBuffer[ValidCount].GopWidth = HorizontalResolution;
NewModeBuffer[ValidCount].GopHeight = VerticalResolution;
NewModeBuffer[ValidCount].GopModeNumber = GopModeNumber;
NewModeBuffer[ValidCount].DeltaX = (HorizontalResolution - (NewModeBuffer[ValidCount].Columns * EFI_GLYPH_WIDTH)) >> 1;
NewModeBuffer[ValidCount].DeltaY = (VerticalResolution - (NewModeBuffer[ValidCount].Rows * EFI_GLYPH_HEIGHT)) >> 1;
ValidCount++;
}
}
DEBUG_CODE (
for (Index = 0; Index < ValidCount; Index++) {
DEBUG ((EFI_D_INFO, "Graphics - Mode %d, Column = %d, Row = %d\n",
Index, NewModeBuffer[Index].Columns, NewModeBuffer[Index].Rows));
}
);
//
// Return valid mode count and mode information buffer.
//
*TextModeCount = ValidCount;
*TextModeData = NewModeBuffer;
return EFI_SUCCESS;
}
/**
Start this driver on Controller by opening Graphics Output protocol or
@ -241,14 +398,10 @@ GraphicsConsoleControllerDriverStart (
UINT32 RefreshRate;
UINT32 ModeIndex;
UINTN MaxMode;
UINTN MaxColumns;
UINTN MaxRows;
UINT32 ModeNumber;
EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *Mode;
GRAPHICS_CONSOLE_MODE_DATA *ModeData;
UINTN SizeOfInfo;
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info;
BOOLEAN TextModeFound;
ModeNumber = 0;
@ -399,80 +552,17 @@ GraphicsConsoleControllerDriverStart (
}
//
// Include the existing pre-defined 80x25, 80x50 and 100x31
// in mGraphicsConsoleDevTemplate.
// Initialize the mode which GraphicsConsole supports.
//
MaxMode = 3;
Status = InitializeGraphicsConsoleTextMode (
HorizontalResolution,
VerticalResolution,
ModeNumber,
&MaxMode,
&Private->ModeData
);
//
// Compute the maximum number of text Rows and Columns that this current graphics mode can support
//
MaxColumns = HorizontalResolution / EFI_GLYPH_WIDTH;
MaxRows = VerticalResolution / EFI_GLYPH_HEIGHT;
//
// Add Mode #3 that uses the entire display for user-defined mode
//
Private->ModeData[MaxMode].Columns = MaxColumns;
Private->ModeData[MaxMode].Rows = MaxRows;
MaxMode++;
//
// Add Mode #4 that uses the PCD values
//
Private->ModeData[MaxMode].Columns = (UINTN) PcdGet32 (PcdConOutColumn);
Private->ModeData[MaxMode].Rows = (UINTN) PcdGet32 (PcdConOutRow);
if ((Private->ModeData[MaxMode].Columns != 0) && (Private->ModeData[MaxMode].Rows != 0)) {
MaxMode++;
}
//
// Here we make sure that mode 0 is valid
//
if (MaxColumns < Private->ModeData[0].Columns ||
MaxRows < Private->ModeData[0].Rows) {
//
// 80x25 cannot be supported.
//
if ((Private->ModeData[4].Columns != 0) && (Private->ModeData[4].Rows != 0)) {
//
// Fallback to using the Mode 4 for mode 0 if PcdConOutColumn and PcdConOutRow
// are not 0. If the PCDs are also too large, then mode 0
// will be shrunk to fit as needed. If the PCDs are all 0,
// then mode 0 will be the entire display.
//
Private->ModeData[0].Columns = MIN (Private->ModeData[4].Columns, MaxColumns);
Private->ModeData[0].Rows = MIN (Private->ModeData[4].Rows, MaxRows);
} else {
Private->ModeData[0].Columns = MaxColumns;
Private->ModeData[0].Rows = MaxRows;
}
}
TextModeFound = FALSE;
for (ModeIndex = 0; ModeIndex < GRAPHICS_MAX_MODE; ModeIndex++) {
ModeData = &Private->ModeData[ModeIndex];
ModeData->GopWidth = HorizontalResolution;
ModeData->GopHeight = VerticalResolution;
ModeData->GopModeNumber = ModeNumber;
if ((ModeData->Columns != 0) && (ModeData->Rows != 0) &&
(MaxColumns >= ModeData->Columns) && (MaxRows >= ModeData->Rows)) {
ModeData->DeltaX = (HorizontalResolution - (ModeData->Columns * EFI_GLYPH_WIDTH)) >> 1;
ModeData->DeltaY = (VerticalResolution - (ModeData->Rows * EFI_GLYPH_HEIGHT)) >> 1;
TextModeFound = TRUE;
} else {
ModeData->Columns = 0;
ModeData->Rows = 0;
ModeData->DeltaX = 0;
ModeData->DeltaY = 0;
}
}
//
// See if the resolution was too small to support any text modes
//
if (!TextModeFound) {
Status = EFI_UNSUPPORTED;
if (EFI_ERROR (Status)) {
goto Error;
}
@ -528,6 +618,10 @@ Error:
FreePool (Private->LineBuffer);
}
if (Private->ModeData != NULL) {
FreePool (Private->ModeData);
}
//
// Free private data
//
@ -612,6 +706,10 @@ GraphicsConsoleControllerDriverStop (
FreePool (Private->LineBuffer);
}
if (Private->ModeData != NULL) {
FreePool (Private->ModeData);
}
//
// Free our instance data
//
@ -1162,7 +1260,7 @@ GraphicsConsoleConOutQueryMode (
*Columns = Private->ModeData[ModeNumber].Columns;
*Rows = Private->ModeData[ModeNumber].Rows;
if (*Columns <= 0 && *Rows <= 0) {
if (*Columns <= 0 || *Rows <= 0) {
Status = EFI_UNSUPPORTED;
goto Done;

View File

@ -63,15 +63,13 @@ typedef struct {
UINT32 GopModeNumber;
} GRAPHICS_CONSOLE_MODE_DATA;
#define GRAPHICS_MAX_MODE 5
typedef struct {
UINTN Signature;
EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;
EFI_UGA_DRAW_PROTOCOL *UgaDraw;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL SimpleTextOutput;
EFI_SIMPLE_TEXT_OUTPUT_MODE SimpleTextOutputMode;
GRAPHICS_CONSOLE_MODE_DATA ModeData[GRAPHICS_MAX_MODE];
GRAPHICS_CONSOLE_MODE_DATA *ModeData;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL *LineBuffer;
} GRAPHICS_CONSOLE_DEV;

View File

@ -68,6 +68,7 @@ TERMINAL_DEV mTerminalDevTemplate = {
0, // CursorRow
TRUE // CursorVisible
},
NULL, // TerminalConsoleModeData
0, // SerialInTimeOut
NULL, // RawFifo
@ -94,6 +95,15 @@ TERMINAL_DEV mTerminalDevTemplate = {
}
};
TERMINAL_CONSOLE_MODE_DATA mTerminalConsoleModeData[] = {
{100, 31},
//
// New modes can be added here.
// The last entry is specific for PcdConOutRow x PcdConOutColumn.
//
{0, 0}
};
/**
Test to see if this driver supports Controller.
@ -398,6 +408,109 @@ TerminalFreeNotifyList (
return EFI_SUCCESS;
}
/**
Initialize all the text modes which the terminal console supports.
It returns information for available text modes that the terminal can support.
@param[out] TextModeCount The total number of text modes that terminal console supports.
@param[out] TextModeData The buffer to the text modes column and row information.
Caller is responsible to free it when it's non-NULL.
@retval EFI_SUCCESS The supporting mode information is returned.
@retval EFI_INVALID_PARAMETER The parameters are invalid.
**/
EFI_STATUS
InitializeTerminalConsoleTextMode (
OUT UINTN *TextModeCount,
OUT TERMINAL_CONSOLE_MODE_DATA **TextModeData
)
{
UINTN Index;
UINTN Count;
TERMINAL_CONSOLE_MODE_DATA *ModeBuffer;
TERMINAL_CONSOLE_MODE_DATA *NewModeBuffer;
UINTN ValidCount;
UINTN ValidIndex;
if ((TextModeCount == NULL) || (TextModeData == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// Assign the last entry as PcdConOutColumn and PcdConOutRow defined.
//
Count = sizeof (mTerminalConsoleModeData) / sizeof (TERMINAL_CONSOLE_MODE_DATA);
mTerminalConsoleModeData[Count - 1].Columns = (UINTN) PcdGet32 (PcdConOutColumn);
mTerminalConsoleModeData[Count - 1].Rows = (UINTN) PcdGet32 (PcdConOutRow);;
//
// Get defined mode buffer pointer.
//
ModeBuffer = mTerminalConsoleModeData;
//
// Here we make sure that the final mode exposed does not include the duplicated modes,
// and does not include the invalid modes which exceed the max column and row.
// Reserve 2 modes for 80x25, 80x50 of terminal console.
//
NewModeBuffer = AllocateZeroPool (sizeof (TERMINAL_CONSOLE_MODE_DATA) * (Count + 2));
ASSERT (NewModeBuffer != NULL);
//
// Mode 0 and mode 1 is for 80x25, 80x50 according to UEFI spec.
//
ValidCount = 0;
NewModeBuffer[ValidCount].Columns = 80;
NewModeBuffer[ValidCount].Rows = 25;
ValidCount++;
NewModeBuffer[ValidCount].Columns = 80;
NewModeBuffer[ValidCount].Rows = 50;
ValidCount++;
//
// Start from mode 2 to put the valid mode other than 80x25 and 80x50 in the output mode buffer.
//
for (Index = 0; Index < Count; Index++) {
if ((ModeBuffer[Index].Columns == 0) || (ModeBuffer[Index].Rows == 0)) {
//
// Skip the pre-defined mode which is invalid.
//
continue;
}
for (ValidIndex = 0; ValidIndex < ValidCount; ValidIndex++) {
if ((ModeBuffer[Index].Columns == NewModeBuffer[ValidIndex].Columns) &&
(ModeBuffer[Index].Rows == NewModeBuffer[ValidIndex].Rows)) {
//
// Skip the duplicated mode.
//
break;
}
}
if (ValidIndex == ValidCount) {
NewModeBuffer[ValidCount].Columns = ModeBuffer[Index].Columns;
NewModeBuffer[ValidCount].Rows = ModeBuffer[Index].Rows;
ValidCount++;
}
}
DEBUG_CODE (
for (Index = 0; Index < ValidCount; Index++) {
DEBUG ((EFI_D_INFO, "Terminal - Mode %d, Column = %d, Row = %d\n",
Index, NewModeBuffer[Index].Columns, NewModeBuffer[Index].Rows));
}
);
//
// Return valid mode count and mode information buffer.
//
*TextModeCount = ValidCount;
*TextModeData = NewModeBuffer;
return EFI_SUCCESS;
}
/**
Start this driver on Controller by opening a Serial IO protocol,
@ -444,6 +557,7 @@ TerminalDriverBindingStart (
BOOLEAN SimTxtInInstalled;
BOOLEAN SimTxtOutInstalled;
BOOLEAN FirstEnter;
UINTN ModeCount;
TerminalDevice = NULL;
DefaultNode = NULL;
@ -724,8 +838,13 @@ TerminalDriverBindingStart (
sizeof (mTerminalDevTemplate.SimpleTextOutput)
);
SimpleTextOutput->Mode = &TerminalDevice->SimpleTextOutputMode;
TerminalDevice->SimpleTextOutputMode.MaxMode = TERMINAL_MAX_MODE;
Status = InitializeTerminalConsoleTextMode (&ModeCount, &TerminalDevice->TerminalConsoleModeData);
if (EFI_ERROR (Status)) {
goto ReportError;
}
TerminalDevice->SimpleTextOutputMode.MaxMode = (INT32) ModeCount;
//
// For terminal devices, cursor is always visible
//
@ -1102,6 +1221,10 @@ Error:
FreePool (TerminalDevice->DevicePath);
}
if (TerminalDevice->TerminalConsoleModeData != NULL) {
FreePool (TerminalDevice->TerminalConsoleModeData);
}
FreePool (TerminalDevice);
}
}
@ -1273,6 +1396,9 @@ TerminalDriverBindingStop (
gBS->CloseEvent (TerminalDevice->SimpleInputEx.WaitForKeyEx);
TerminalFreeNotifyList (&TerminalDevice->NotifyList);
FreePool (TerminalDevice->DevicePath);
if (TerminalDevice->TerminalConsoleModeData != NULL) {
FreePool (TerminalDevice->TerminalConsoleModeData);
}
FreePool (TerminalDevice);
}
}

View File

@ -61,6 +61,11 @@ typedef struct {
EFI_INPUT_KEY Data[FIFO_MAX_NUMBER + 1];
} EFI_KEY_FIFO;
typedef struct {
UINTN Columns;
UINTN Rows;
} TERMINAL_CONSOLE_MODE_DATA;
#define KEYBOARD_TIMER_INTERVAL 200000 // 0.02s
#define TERMINAL_DEV_SIGNATURE SIGNATURE_32 ('t', 'm', 'n', 'l')
@ -83,6 +88,7 @@ typedef struct {
EFI_SIMPLE_TEXT_INPUT_PROTOCOL SimpleInput;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL SimpleTextOutput;
EFI_SIMPLE_TEXT_OUTPUT_MODE SimpleTextOutputMode;
TERMINAL_CONSOLE_MODE_DATA *TerminalConsoleModeData;
UINTN SerialInTimeOut;
RAW_DATA_FIFO *RawFiFo;
UNICODE_FIFO *UnicodeFiFo;
@ -137,21 +143,6 @@ typedef union {
#define CCAP 0x43
#define DCAP 0x44
#define MODE0_COLUMN_COUNT 80
#define MODE0_ROW_COUNT 25
#define MODE1_COLUMN_COUNT 80
#define MODE1_ROW_COUNT 50
#define MODE2_COLUMN_COUNT 100
#define MODE2_ROW_COUNT 31
//
// MODE3 is defined by PcdConOutColumn & PcdConOutRow
//
#define TERMINAL_MAX_MODE 4
#define BACKSPACE 8
#define ESC 27
#define CSI 0x9B

View File

@ -205,7 +205,7 @@ TerminalConOutOutputString (
//
Mode = This->Mode;
if (Mode->Mode >= TERMINAL_MAX_MODE) {
if (Mode->Mode >= Mode->MaxMode) {
return EFI_UNSUPPORTED;
}
@ -392,8 +392,6 @@ TerminalConOutTestString (
It returns information for an available text mode
that the terminal supports.
In this driver, we support text mode 80x25 (mode 0),
80x50 (mode 1), 100x31 (mode 2).
@param This Indicates the calling context.
@param ModeNumber The mode number to return information on.
@ -402,7 +400,6 @@ TerminalConOutTestString (
@retval EFI_SUCCESS The requested mode information is returned.
@retval EFI_UNSUPPORTED The mode number is not valid.
@retval EFI_DEVICE_ERROR
**/
EFI_STATUS
@ -414,35 +411,20 @@ TerminalConOutQueryMode (
OUT UINTN *Rows
)
{
if (This->Mode->MaxMode > TERMINAL_MAX_MODE) {
return EFI_DEVICE_ERROR;
TERMINAL_DEV *TerminalDevice;
if (ModeNumber >= (UINTN) This->Mode->MaxMode) {
return EFI_UNSUPPORTED;
}
if (ModeNumber == 0) {
*Columns = MODE0_COLUMN_COUNT;
*Rows = MODE0_ROW_COUNT;
return EFI_SUCCESS;
} else if (ModeNumber == 1) {
*Columns = MODE1_COLUMN_COUNT;
*Rows = MODE1_ROW_COUNT;
return EFI_SUCCESS;
} else if (ModeNumber == 2) {
*Columns = MODE2_COLUMN_COUNT;
*Rows = MODE2_ROW_COUNT;
return EFI_SUCCESS;
} else if (ModeNumber == 3) {
*Columns = (UINTN) PcdGet32 (PcdConOutColumn);
if (*Columns == 0) {
*Columns = MODE0_COLUMN_COUNT;
}
*Rows = (UINTN) PcdGet32 (PcdConOutRow);
if (*Rows == 0) {
*Rows = MODE0_ROW_COUNT;
}
return EFI_SUCCESS;
}
//
// Get Terminal device data structure pointer.
//
TerminalDevice = TERMINAL_CON_OUT_DEV_FROM_THIS (This);
*Columns = TerminalDevice->TerminalConsoleModeData[ModeNumber].Columns;
*Rows = TerminalDevice->TerminalConsoleModeData[ModeNumber].Rows;
return EFI_UNSUPPORTED;
return EFI_SUCCESS;
}
@ -476,7 +458,7 @@ TerminalConOutSetMode (
//
TerminalDevice = TERMINAL_CON_OUT_DEV_FROM_THIS (This);
if (ModeNumber >= TERMINAL_MAX_MODE) {
if (ModeNumber >= (UINTN) This->Mode->MaxMode) {
return EFI_UNSUPPORTED;
}