arm.h File Reference

Go to the source code of this file.

Macros
#define	LCDTIMING0_PPL(x)   ((((x) / 16 - 1) & 0x3f) << 2)
#define	LCDTIMING1_LPP(x)   (((x) & 0x3ff) - 1)
#define	LCDCONTROL_LCDPWR   (1 << 11)
#define	LCDCONTROL_LCDEN   (1)
#define	LCDCONTROL_LCDBPP(x)   (((x) & 7) << 1)
#define	LCDCONTROL_LCDTFT   (1 << 5)
#define	PL110_LCDTIMING0   (PVOID)0xE0020000
#define	PL110_LCDTIMING1   (PVOID)0xE0020004
#define	PL110_LCDTIMING2   (PVOID)0xE0020008
#define	PL110_LCDUPBASE   (PVOID)0xE0020010
#define	PL110_LCDLPBASE   (PVOID)0xE0020014
#define	PL110_LCDCONTROL   (PVOID)0xE0020018
#define	READ_REGISTER_ULONG(r)   (*(volatile ULONG * const)(r))
#define	WRITE_REGISTER_ULONG(r, v)   (*(volatile ULONG *)(r) = (v))
#define	READ_REGISTER_USHORT(r)   (*(volatile USHORT * const)(r))
#define	WRITE_REGISTER_USHORT(r, v)   (*(volatile USHORT *)(r) = (v))

Functions
FORCEINLINE USHORT	VidpBuildColor (_In_ UCHAR Color)
VOID NTAPI	InitPaletteWithTable (_In_ PULONG Table, _In_ ULONG Count)
FORCEINLINE VOID	SetPixel (_In_ ULONG Left, _In_ ULONG Top, _In_ UCHAR Color)
VOID NTAPI	PreserveRow (_In_ ULONG CurrentTop, _In_ ULONG TopDelta, _In_ BOOLEAN Restore)
VOID NTAPI	DoScroll (_In_ ULONG Scroll)
VOID NTAPI	DisplayCharacter (_In_ CHAR Character, _In_ ULONG Left, _In_ ULONG Top, _In_ ULONG TextColor, _In_ ULONG BackColor)

Variables
PUSHORT	VgaArmBase

Macro Definition Documentation

LCDCONTROL_LCDBPP

#define LCDCONTROL_LCDBPP

(

x

)

(((x) & 7) << 1)

Definition at line 10 of file arm.h.

LCDCONTROL_LCDEN

#define LCDCONTROL_LCDEN   (1)

Definition at line 9 of file arm.h.

LCDCONTROL_LCDPWR

#define LCDCONTROL_LCDPWR   (1 << 11)

Definition at line 8 of file arm.h.

LCDCONTROL_LCDTFT

#define LCDCONTROL_LCDTFT   (1 << 5)

Definition at line 11 of file arm.h.

LCDTIMING0_PPL

#define LCDTIMING0_PPL

(

x

)

((((x) / 16 - 1) & 0x3f) << 2)

Definition at line 6 of file arm.h.

LCDTIMING1_LPP

#define LCDTIMING1_LPP

(

x

)

(((x) & 0x3ff) - 1)

Definition at line 7 of file arm.h.

PL110_LCDCONTROL

#define PL110_LCDCONTROL   (PVOID)0xE0020018

Definition at line 18 of file arm.h.

PL110_LCDLPBASE

#define PL110_LCDLPBASE   (PVOID)0xE0020014

Definition at line 17 of file arm.h.

PL110_LCDTIMING0

#define PL110_LCDTIMING0   (PVOID)0xE0020000

Definition at line 13 of file arm.h.

PL110_LCDTIMING1

#define PL110_LCDTIMING1   (PVOID)0xE0020004

Definition at line 14 of file arm.h.

PL110_LCDTIMING2

#define PL110_LCDTIMING2   (PVOID)0xE0020008

Definition at line 15 of file arm.h.

PL110_LCDUPBASE

#define PL110_LCDUPBASE   (PVOID)0xE0020010

Definition at line 16 of file arm.h.

READ_REGISTER_ULONG

#define READ_REGISTER_ULONG

(

r

)

(*(volatile ULONG * const)(r))

Definition at line 20 of file arm.h.

READ_REGISTER_USHORT

#define READ_REGISTER_USHORT

(

r

)

(*(volatile USHORT * const)(r))

Definition at line 23 of file arm.h.

WRITE_REGISTER_ULONG

#define WRITE_REGISTER_ULONG	(		r,
			v
	)		(*(volatile ULONG *)(r) = (v))

Definition at line 21 of file arm.h.

WRITE_REGISTER_USHORT

#define WRITE_REGISTER_USHORT	(		r,
			v
	)		(*(volatile USHORT *)(r) = (v))

Definition at line 24 of file arm.h.

Function Documentation

DisplayCharacter()

VOID NTAPI DisplayCharacter	(	_In_ CHAR	Character,
		_In_ ULONG	Left,
		_In_ ULONG	Top,
		_In_ ULONG	TextColor,
		_In_ ULONG	BackColor
	)

Definition at line 13 of file bootvid.c.

{
    PUCHAR FontChar;
    ULONG i, j, XOffset;

    /* Get the font line for this character */
    FontChar = &VidpFontData[Character * BOOTCHAR_HEIGHT - Top];

    /* Loop each pixel height */
    for (i = BOOTCHAR_HEIGHT; i > 0; --i)
    {
        /* Loop each pixel width */
        XOffset = Left;
        for (j = (1 << 7); j > 0; j >>= 1)
        {
            /* Check if we should draw this pixel */
            if (FontChar[Top] & (UCHAR)j)
            {
                /* We do, use the given Text Color */
                SetPixel(XOffset, Top, (UCHAR)TextColor);
            }
            else if (BackColor < BV_COLOR_NONE)
            {
                /*
                 * This is a background pixel. We're drawing it
                 * unless it's transparent.
                 */
                SetPixel(XOffset, Top, (UCHAR)BackColor);
            }

            /* Increase X Offset */
            XOffset++;
        }

        /* Move to the next Y ordinate */
        Top++;
    }
}

Referenced by VidDisplayString(), and VidDisplayStringXY().

DoScroll()

VOID NTAPI DoScroll

(

_In_ ULONG

Scroll

)

Definition at line 59 of file bootvid.c.

{
    ULONG Top, Offset;
    PUSHORT SourceOffset, DestOffset;
    PUSHORT i, j;

    /* Set memory positions of the scroll */
    SourceOffset = &VgaArmBase[(VidpScrollRegion[1] * (SCREEN_WIDTH / 8)) + (VidpScrollRegion[0] >> 3)];
    DestOffset = &SourceOffset[Scroll * (SCREEN_WIDTH / 8)];

    /* Start loop */
    for (Top = VidpScrollRegion[1]; Top <= VidpScrollRegion[3]; ++Top)
    {
        /* Set number of bytes to loop and start offset */
        Offset = VidpScrollRegion[0] >> 3;
        j = SourceOffset;

        /* Check if this is part of the scroll region */
        if (Offset <= (VidpScrollRegion[2] >> 3))
        {
            /* Update position */
            i = (PUSHORT)(DestOffset - SourceOffset);

            /* Loop the X axis */
            do
            {
                /* Write value in the new position so that we can do the scroll */
                WRITE_REGISTER_USHORT(j, READ_REGISTER_USHORT(j + (ULONG_PTR)i));

                /* Move to the next memory location to write to */
                j++;

                /* Move to the next byte in the region */
                Offset++;

                /* Make sure we don't go past the scroll region */
            } while (Offset <= (VidpScrollRegion[2] >> 3));
        }

        /* Move to the next line */
        SourceOffset += (SCREEN_WIDTH / 8);
        DestOffset += (SCREEN_WIDTH / 8);
    }
}

Referenced by VidDisplayString().

InitPaletteWithTable()

VOID NTAPI InitPaletteWithTable	(	_In_ PULONG	Table,
		_In_ ULONG	Count
	)

Definition at line 170 of file bootvid.c.

{
    UNIMPLEMENTED;
}

Referenced by VidBitBlt().

PreserveRow()

VOID NTAPI PreserveRow	(	_In_ ULONG	CurrentTop,
		_In_ ULONG	TopDelta,
		_In_ BOOLEAN	Restore
	)

Definition at line 107 of file bootvid.c.

{
    PUSHORT Position1, Position2;
    ULONG Count;

    /* Calculate the position in memory for the row */
    if (Restore)
    {
        /* Restore the row by copying back the contents saved off-screen */
        Position1 = &VgaArmBase[CurrentTop * (SCREEN_WIDTH / 8)];
        Position2 = &VgaArmBase[SCREEN_HEIGHT * (SCREEN_WIDTH / 8)];
    }
    else
    {
        /* Preserve the row by saving its contents off-screen */
        Position1 = &VgaArmBase[SCREEN_HEIGHT * (SCREEN_WIDTH / 8)];
        Position2 = &VgaArmBase[CurrentTop * (SCREEN_WIDTH / 8)];
    }

    /* Set the count and loop every pixel */
    Count = TopDelta * (SCREEN_WIDTH / 8);
    while (Count--)
    {
        /* Write the data back on the other position */
        WRITE_REGISTER_USHORT(Position1, READ_REGISTER_USHORT(Position2));

        /* Increase both positions */
        Position1++;
        Position2++;
    }
}

Referenced by VidDisplayString().

SetPixel()

FORCEINLINE VOID SetPixel	(	_In_ ULONG	Left,
		_In_ ULONG	Top,
		_In_ UCHAR	Color
	)

Definition at line 50 of file arm.h.

{
    PUSHORT PixelPosition;

    /* Calculate the pixel position */
    PixelPosition = &VgaArmBase[Left + (Top * SCREEN_WIDTH)];

    /* Set our color */
    WRITE_REGISTER_USHORT(PixelPosition, VidpBuildColor(Color));
}

Referenced by _test_color(), Airbrush(), AlphaBlendInit(), BitBlt(), BltCard(), Brush(), cdtDrawExt(), CreateSinkBmp(), draw_graphics(), draw_text_2(), DrawCardCorner(), DrawCharacterPixel(), DrawStarField(), EditGlyphPreviewWndProc(), endPaintingL(), endPaintingR(), InitResources(), CPaletteWindow::OnPaint(), PlayMetaFileRecord(), Replace(), RleBitBlt(), startPaintingL(), startPaintingR(), test_alpha_hdc(), test_begin_paint(), test_bitmap_colors(), test_DIB_PAL_COLORS(), test_fromMemoryBitmap(), test_GetSetDIBits_rtl(), Test_SetPixel_PAL(), Test_SetPixel_Params(), Test_SrcMono(), test_StretchBlt(), TREEVIEW_DrawItemLines(), WndProc_wave(), write_monocolor_pixels_frontbuffer(), and write_monocolor_span_frontbuffer().

VidpBuildColor()

FORCEINLINE USHORT VidpBuildColor

(

_In_ UCHAR

Color

)

Definition at line 28 of file arm.h.

{
    UCHAR Red, Green, Blue;

    /* Extract color components */
    Red   = GetRValue(DefaultPalette[Color]) >> 3;
    Green = GetGValue(DefaultPalette[Color]) >> 3;
    Blue  = GetBValue(DefaultPalette[Color]) >> 3;

    /* Build the 16-bit color mask */
    return ((Red & 0x1F) << 11) | ((Green & 0x1F) << 6) | ((Blue & 0x1F));
}

Referenced by SetPixel().

Variable Documentation

VgaArmBase

PUSHORT VgaArmBase

Definition at line 6 of file bootvid.c.

Referenced by DoScroll(), PreserveRow(), SetPixel(), and VidInitialize().