uefivid.c File Reference

#include <uefildr.h>
#include <debug.h>

Include dependency graph for uefivid.c:

Go to the source code of this file.

Macros
#define	CHAR_WIDTH   8
#define	CHAR_HEIGHT   16
#define	TOP_BOTTOM_LINES   0
#define	LOWEST_SUPPORTED_RES   1

Functions
	DBG_DEFAULT_CHANNEL (WARNING)
EFI_STATUS	UefiInitializeVideo (VOID)
VOID	UefiPrintFramebufferData (VOID)
static ULONG	UefiVideoAttrToSingleColor (UCHAR Attr)
static VOID	UefiVideoAttrToColors (UCHAR Attr, ULONG *FgColor, ULONG *BgColor)
static VOID	UefiVideoClearScreenColor (ULONG Color, BOOLEAN FullScreen)
VOID	UefiVideoClearScreen (UCHAR Attr)
VOID	UefiVideoOutputChar (UCHAR Char, unsigned X, unsigned Y, ULONG FgColor, ULONG BgColor)
VOID	UefiVideoPutChar (int Ch, UCHAR Attr, unsigned X, unsigned Y)
VOID	UefiVideoGetDisplaySize (PULONG Width, PULONG Height, PULONG Depth)
VIDEODISPLAYMODE	UefiVideoSetDisplayMode (char *DisplayMode, BOOLEAN Init)
ULONG	UefiVideoGetBufferSize (VOID)
VOID	UefiVideoCopyOffScreenBufferToVRAM (PVOID Buffer)
VOID	UefiVideoScrollUp (VOID)
VOID	UefiVideoSetTextCursorPosition (UCHAR X, UCHAR Y)
VOID	UefiVideoHideShowTextCursor (BOOLEAN Show)
BOOLEAN	UefiVideoIsPaletteFixed (VOID)
VOID	UefiVideoSetPaletteColor (UCHAR Color, UCHAR Red, UCHAR Green, UCHAR Blue)
VOID	UefiVideoGetPaletteColor (UCHAR Color, UCHAR *Red, UCHAR *Green, UCHAR *Blue)

Variables
EFI_SYSTEM_TABLE *	GlobalSystemTable
EFI_HANDLE	GlobalImageHandle
UCHAR	BitmapFont8x16 [256 *16]
UCHAR	MachDefaultTextColor = COLOR_GRAY
REACTOS_INTERNAL_BGCONTEXT	framebufferData
EFI_GUID	EfiGraphicsOutputProtocol = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID

Macro Definition Documentation

CHAR_HEIGHT

#define CHAR_HEIGHT   16

Definition at line 14 of file uefivid.c.

CHAR_WIDTH

#define CHAR_WIDTH   8

Definition at line 13 of file uefivid.c.

LOWEST_SUPPORTED_RES

#define LOWEST_SUPPORTED_RES   1

Definition at line 16 of file uefivid.c.

TOP_BOTTOM_LINES

#define TOP_BOTTOM_LINES   0

Definition at line 15 of file uefivid.c.

Function Documentation

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

WARNING

)

UefiInitializeVideo()

EFI_STATUS UefiInitializeVideo

(

VOID

)

Definition at line 31 of file uefivid.c.

{
    EFI_STATUS Status;
    EFI_GRAPHICS_OUTPUT_PROTOCOL* gop = NULL;
 
    RtlZeroMemory(&framebufferData, sizeof(framebufferData));
    Status = GlobalSystemTable->BootServices->LocateProtocol(&EfiGraphicsOutputProtocol, 0, (void**)&gop);
    if (Status != EFI_SUCCESS)
    {
        TRACE("Failed to find GOP with status %d\n", Status);
        return Status;
    }
 
    /* We don't need high resolutions for freeldr */
    gop->SetMode(gop, LOWEST_SUPPORTED_RES);
 
    framebufferData.BaseAddress        = (ULONG_PTR)gop->Mode->FrameBufferBase;
    framebufferData.BufferSize         = gop->Mode->FrameBufferSize;
    framebufferData.ScreenWidth        = gop->Mode->Info->HorizontalResolution;
    framebufferData.ScreenHeight       = gop->Mode->Info->VerticalResolution;
    framebufferData.PixelsPerScanLine  = gop->Mode->Info->PixelsPerScanLine;
    framebufferData.PixelFormat        = gop->Mode->Info->PixelFormat;
 
    return Status;
}

Referenced by MachInit().

UefiPrintFramebufferData()

VOID UefiPrintFramebufferData

(

VOID

)

Definition at line 58 of file uefivid.c.

{
    TRACE("Framebuffer BaseAddress       : %X\n", framebufferData.BaseAddress);
    TRACE("Framebuffer BufferSize        : %X\n", framebufferData.BufferSize);
    TRACE("Framebuffer ScreenWidth       : %d\n", framebufferData.ScreenWidth);
    TRACE("Framebuffer ScreenHeight      : %d\n", framebufferData.ScreenHeight);
    TRACE("Framebuffer PixelsPerScanLine : %d\n", framebufferData.PixelsPerScanLine);
    TRACE("Framebuffer PixelFormat       : %d\n", framebufferData.PixelFormat);
}

UefiVideoAttrToColors()

static VOID UefiVideoAttrToColors ( UCHAR  Attr, ULONG *  FgColor, ULONG *  BgColor  )

static

Definition at line 81 of file uefivid.c.

{
    *FgColor = UefiVideoAttrToSingleColor(Attr & 0xf);
    *BgColor = UefiVideoAttrToSingleColor((Attr >> 4) & 0xf);
}

Referenced by UefiVideoClearScreen(), UefiVideoPutChar(), and UefiVideoScrollUp().

UefiVideoAttrToSingleColor()

static ULONG UefiVideoAttrToSingleColor ( UCHAR  Attr )

static

Definition at line 69 of file uefivid.c.

{
    UCHAR Intensity;
    Intensity = (0 == (Attr & 0x08) ? 127 : 255);
 
    return 0xff000000 |
           (0 == (Attr & 0x04) ? 0 : (Intensity << 16)) |
           (0 == (Attr & 0x02) ? 0 : (Intensity << 8)) |
           (0 == (Attr & 0x01) ? 0 : Intensity);
}

Referenced by UefiVideoAttrToColors().

UefiVideoClearScreen()

VOID UefiVideoClearScreen

(

UCHAR

Attr

)

Definition at line 107 of file uefivid.c.

{
    ULONG FgColor, BgColor;
 
    UefiVideoAttrToColors(Attr, &FgColor, &BgColor);
    UefiVideoClearScreenColor(BgColor, FALSE);
}

Referenced by MachInit().

UefiVideoClearScreenColor()

static VOID UefiVideoClearScreenColor ( ULONG  Color, BOOLEAN  FullScreen  )

static

Definition at line 89 of file uefivid.c.

{
    ULONG Delta;
    ULONG Line, Col;
    PULONG p;
 
    Delta = (framebufferData.PixelsPerScanLine * 4 + 3) & ~ 0x3;
    for (Line = 0; Line < framebufferData.ScreenHeight - (FullScreen ? 0 : 2 * TOP_BOTTOM_LINES); Line++)
    {
        p = (PULONG) ((char *) framebufferData.BaseAddress + (Line + (FullScreen ? 0 : TOP_BOTTOM_LINES)) * Delta);
        for (Col = 0; Col < framebufferData.ScreenWidth; Col++)
        {
            *p++ = Color;
        }
    }
}

Referenced by UefiVideoClearScreen().

UefiVideoCopyOffScreenBufferToVRAM()

VOID UefiVideoCopyOffScreenBufferToVRAM

(

PVOID

Buffer

)

Definition at line 175 of file uefivid.c.

{
    PUCHAR OffScreenBuffer = (PUCHAR)Buffer;
 
    ULONG Col, Line;
    for (Line = 0; Line < (framebufferData.ScreenHeight - 2 * TOP_BOTTOM_LINES) / CHAR_HEIGHT; Line++)
    {
        for (Col = 0; Col < framebufferData.ScreenWidth / CHAR_WIDTH; Col++)
        {
            UefiVideoPutChar(OffScreenBuffer[0], OffScreenBuffer[1], Col, Line);
            OffScreenBuffer += 2;
        }
    }
}

Referenced by MachInit().

UefiVideoGetBufferSize()

ULONG UefiVideoGetBufferSize

(

VOID

)

Definition at line 169 of file uefivid.c.

{
    return ((framebufferData.ScreenHeight - 2 * TOP_BOTTOM_LINES) / CHAR_HEIGHT * (framebufferData.ScreenWidth / CHAR_WIDTH) * 2);
}

Referenced by MachInit().

UefiVideoGetDisplaySize()

VOID UefiVideoGetDisplaySize	(	PULONG	Width,
		PULONG	Height,
		PULONG	Depth
	)

Definition at line 154 of file uefivid.c.

{
    *Width =  framebufferData.ScreenWidth / CHAR_WIDTH;
    *Height = (framebufferData.ScreenHeight - 2 * TOP_BOTTOM_LINES) / CHAR_HEIGHT;
    *Depth =  0;
}

Referenced by MachInit(), and UefiConsPutChar().

UefiVideoGetPaletteColor()

VOID UefiVideoGetPaletteColor	(	UCHAR	Color,
		UCHAR *	Red,
		UCHAR *	Green,
		UCHAR *	Blue
	)

Definition at line 236 of file uefivid.c.

{
    /* Not supported */
}

Referenced by MachInit().

UefiVideoHideShowTextCursor()

VOID UefiVideoHideShowTextCursor

(

BOOLEAN

Show

)

Definition at line 217 of file uefivid.c.

{
    /* We don't have a cursor yet */
}

Referenced by MachInit().

UefiVideoIsPaletteFixed()

BOOLEAN UefiVideoIsPaletteFixed

(

VOID

)

Definition at line 223 of file uefivid.c.

{
    return 0;
}

Referenced by MachInit().

UefiVideoOutputChar()

VOID UefiVideoOutputChar	(	UCHAR	Char,
		unsigned	X,
		unsigned	Y,
		ULONG	FgColor,
		ULONG	BgColor
	)

Definition at line 116 of file uefivid.c.

{
    PUCHAR FontPtr;
    PULONG Pixel;
    UCHAR Mask;
    unsigned Line;
    unsigned Col;
    ULONG Delta;
    Delta = (framebufferData.PixelsPerScanLine * 4 + 3) & ~ 0x3;
    FontPtr = BitmapFont8x16 + Char * 16;
    Pixel = (PULONG) ((char *) framebufferData.BaseAddress +
            (Y * CHAR_HEIGHT + TOP_BOTTOM_LINES) *  Delta + X * CHAR_WIDTH * 4);
 
    for (Line = 0; Line < CHAR_HEIGHT; Line++)
    {
        Mask = 0x80;
        for (Col = 0; Col < CHAR_WIDTH; Col++)
        {
            Pixel[Col] = (0 != (FontPtr[Line] & Mask) ? FgColor : BgColor);
            Mask = Mask >> 1;
        }
        Pixel = (PULONG) ((char *) Pixel + Delta);
    }
}

Referenced by UefiVideoPutChar().

UefiVideoPutChar()

VOID UefiVideoPutChar	(	int	Ch,
		UCHAR	Attr,
		unsigned	X,
		unsigned	Y
	)

Definition at line 142 of file uefivid.c.

{
    ULONG FgColor = 0;
    ULONG BgColor = 0;
    if (Ch != 0)
    {
        UefiVideoAttrToColors(Attr, &FgColor, &BgColor);
        UefiVideoOutputChar(Ch, X, Y, FgColor, BgColor);
    }
}

Referenced by MachInit(), UefiConsPutChar(), and UefiVideoCopyOffScreenBufferToVRAM().

UefiVideoScrollUp()

VOID UefiVideoScrollUp

(

VOID

)

Definition at line 191 of file uefivid.c.

{
    ULONG BgColor, Dummy;
    ULONG Delta;
    Delta = (framebufferData.PixelsPerScanLine * 4 + 3) & ~ 0x3;
    ULONG PixelCount = framebufferData.ScreenWidth * CHAR_HEIGHT *
                       (((framebufferData.ScreenHeight - 2 * TOP_BOTTOM_LINES) / CHAR_HEIGHT) - 1);
    PULONG Src = (PULONG)((PUCHAR)framebufferData.BaseAddress + (CHAR_HEIGHT + TOP_BOTTOM_LINES) * Delta);
    PULONG Dst = (PULONG)((PUCHAR)framebufferData.BaseAddress + TOP_BOTTOM_LINES * Delta);
 
    UefiVideoAttrToColors(ATTR(COLOR_WHITE, COLOR_BLACK), &Dummy, &BgColor);
 
    while (PixelCount--)
        *Dst++ = *Src++;
 
    for (PixelCount = 0; PixelCount < framebufferData.ScreenWidth * CHAR_HEIGHT; PixelCount++)
        *Dst++ = BgColor;
}

Referenced by UefiConsPutChar().

UefiVideoSetDisplayMode()

VIDEODISPLAYMODE UefiVideoSetDisplayMode	(	char *	DisplayMode,
		BOOLEAN	Init
	)

Definition at line 162 of file uefivid.c.

{
    /* We only have one mode, semi-text */
    return VideoTextMode;
}

Referenced by MachInit().

UefiVideoSetPaletteColor()

VOID UefiVideoSetPaletteColor	(	UCHAR	Color,
		UCHAR	Red,
		UCHAR	Green,
		UCHAR	Blue
	)

Definition at line 229 of file uefivid.c.

{
    /* Not supported */
}

Referenced by MachInit().

UefiVideoSetTextCursorPosition()

VOID UefiVideoSetTextCursorPosition	(	UCHAR	X,
		UCHAR	Y
	)

Definition at line 211 of file uefivid.c.

{
    /* We don't have a cursor yet */
}

Referenced by MachInit().

Variable Documentation

BitmapFont8x16

UCHAR BitmapFont8x16[256 *16]

extern

Definition at line 12 of file vgafont.c.

Referenced by UefiVideoOutputChar().

EfiGraphicsOutputProtocol

EFI_GUID EfiGraphicsOutputProtocol = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID

Definition at line 26 of file uefivid.c.

Referenced by ConsoleEfiGopClose(), ConsoleEfiGopOpen(), ConsoleEfiGraphicalOpenProtocol(), OslDrawLogo(), and UefiInitializeVideo().

framebufferData

REACTOS_INTERNAL_BGCONTEXT framebufferData

Definition at line 25 of file uefivid.c.

Referenced by UefiInitializeVideo(), UefiPrintFramebufferData(), UefiVideoClearScreenColor(), UefiVideoCopyOffScreenBufferToVRAM(), UefiVideoGetBufferSize(), UefiVideoGetDisplaySize(), UefiVideoOutputChar(), and UefiVideoScrollUp().

GlobalImageHandle

EFI_HANDLE GlobalImageHandle

extern

Definition at line 15 of file uefildr.c.

Referenced by EfiEntry().

GlobalSystemTable

EFI_SYSTEM_TABLE* GlobalSystemTable

extern

Definition at line 16 of file uefildr.c.

Referenced by EfiEntry(), and UefiInitializeVideo().

MachDefaultTextColor

UCHAR MachDefaultTextColor = COLOR_GRAY

Definition at line 24 of file uefivid.c.

Referenced by TuiTextToColor().