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76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
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#pragma once
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extern PUSHORT VgaArmBase;
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#define LCDTIMING0_PPL(x) ((((x) / 16 - 1) & 0x3f) << 2)
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#define LCDTIMING1_LPP(x) (((x) & 0x3ff) - 1)
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#define LCDCONTROL_LCDPWR (1 << 11)
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#define LCDCONTROL_LCDEN (1)
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#define LCDCONTROL_LCDBPP(x) (((x) & 7) << 1)
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#define LCDCONTROL_LCDTFT (1 << 5)
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#define PL110_LCDTIMING0 (PVOID)0xE0020000
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#define PL110_LCDTIMING1 (PVOID)0xE0020004
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#define PL110_LCDTIMING2 (PVOID)0xE0020008
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#define PL110_LCDUPBASE (PVOID)0xE0020010
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#define PL110_LCDLPBASE (PVOID)0xE0020014
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#define PL110_LCDCONTROL (PVOID)0xE0020018
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#define READ_REGISTER_ULONG(r) (*(volatile ULONG * const)(r))
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#define WRITE_REGISTER_ULONG(r, v) (*(volatile ULONG *)(r) = (v))
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#define READ_REGISTER_USHORT(r) (*(volatile USHORT * const)(r))
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#define WRITE_REGISTER_USHORT(r, v) (*(volatile USHORT *)(r) = (v))
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PALETTE_ENTRY VidpVga8To16BitTransform[16] =
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{
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{0x00, 0x00, 0x00}, // Black
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{0x00, 0x00, 0x08}, // Blue
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{0x00, 0x08, 0x00}, // Green
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{0x00, 0x08, 0x08}, // Cyan
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{0x08, 0x00, 0x00}, // Red
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{0x08, 0x00, 0x08}, // Magenta
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{0x0B, 0x0D, 0x0F}, // Brown
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{0x10, 0x10, 0x10}, // Light Gray
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{0x08, 0x08, 0x08}, // Dark Gray
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{0x00, 0x00, 0x1F}, // Light Blue
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{0x00, 0x1F, 0x00}, // Light Green
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{0x00, 0x1F, 0x1F}, // Light Cyan
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{0x1F, 0x00, 0x00}, // Light Red
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{0x1F, 0x00, 0x1F}, // Light Magenta
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{0x1F, 0x1F, 0x00}, // Yellow
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{0x1F, 0x1F, 0x1F}, // White
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};
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FORCEINLINE
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USHORT
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VidpBuildColor(_In_ UCHAR Color)
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{
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UCHAR Red, Green, Blue;
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/* Extract color components */
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Red = VidpVga8To16BitTransform[Color].Red;
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Green = VidpVga8To16BitTransform[Color].Green;
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Blue = VidpVga8To16BitTransform[Color].Blue;
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/* Build the 16-bit color mask */
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return ((Red & 0x1F) << 11) | ((Green & 0x1F) << 6) | ((Blue & 0x1F));
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}
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FORCEINLINE
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VOID
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SetPixel(
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_In_ ULONG Left,
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_In_ ULONG Top,
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_In_ UCHAR Color)
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{
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PUSHORT PixelPosition;
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/* Calculate the pixel position */
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PixelPosition = &VgaArmBase[Left + (Top * SCREEN_WIDTH)];
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/* Set our color */
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WRITE_REGISTER_USHORT(PixelPosition, VidpBuildColor(Color));
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}
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