uefivid.c File Reference

#include <uefildr.h>
#include "../vgafont.h"
#include <debug.h>

Include dependency graph for uefivid.c:

Go to the source code of this file.

Macros
#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 (PCSTR 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	MachDefaultTextColor = COLOR_GRAY
REACTOS_INTERNAL_BGCONTEXT	framebufferData
EFI_GUID	EfiGraphicsOutputProtocol = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID

Macro Definition Documentation

LOWEST_SUPPORTED_RES

#define LOWEST_SUPPORTED_RES   1

Definition at line 15 of file uefivid.c.

TOP_BOTTOM_LINES

#define TOP_BOTTOM_LINES   0

Definition at line 14 of file uefivid.c.

Function Documentation

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

WARNING

)

UefiInitializeVideo()

EFI_STATUS UefiInitializeVideo

(

VOID

)

Definition at line 29 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 56 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 79 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 67 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 105 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 87 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 173 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 167 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 152 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 234 of file uefivid.c.

{
    /* Not supported */
}

Referenced by MachInit().

UefiVideoHideShowTextCursor()

VOID UefiVideoHideShowTextCursor

(

BOOLEAN

Show

)

Definition at line 215 of file uefivid.c.

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

Referenced by MachInit().

UefiVideoIsPaletteFixed()

BOOLEAN UefiVideoIsPaletteFixed

(

VOID

)

Definition at line 221 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 114 of file uefivid.c.

{
    const UCHAR* FontPtr;
    PULONG Pixel;
    UCHAR Mask;
    unsigned Line;
    unsigned Col;
    ULONG Delta;
    Delta = (framebufferData.PixelsPerScanLine * 4 + 3) & ~ 0x3;
    FontPtr = BitmapFont8x16 + Char * CHAR_HEIGHT;
    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 140 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 189 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	(	PCSTR	DisplayMode,
		BOOLEAN	Init
	)

Definition at line 160 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 227 of file uefivid.c.

{
    /* Not supported */
}

Referenced by MachInit().

UefiVideoSetTextCursorPosition()

VOID UefiVideoSetTextCursorPosition	(	UCHAR	X,
		UCHAR	Y
	)

Definition at line 209 of file uefivid.c.

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

Referenced by MachInit().

Variable Documentation

EfiGraphicsOutputProtocol

EFI_GUID EfiGraphicsOutputProtocol = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID

Definition at line 24 of file uefivid.c.

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

framebufferData

REACTOS_INTERNAL_BGCONTEXT framebufferData

Definition at line 23 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 22 of file uefivid.c.

Referenced by TuiTextToColor().