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https://github.com/reactos/reactos.git
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- Only set up the registers that are needed for fading in the palette.
Fixes compatibility problems. svn path=/trunk/; revision=5850
This commit is contained in:
David Welch
parent
0fb5176276
commit
c702fb192b
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@ -1,4 +1,4 @@
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/* $Id: bootvid.c,v 1.1 2003/08/24 12:11:13 dwelch Exp $
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/* $Id: bootvid.c,v 1.2 2003/08/25 12:27:45 dwelch Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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@ -17,7 +17,7 @@
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#include "../../../ntoskrnl/include/internal/v86m.h"
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#define NDEBUG
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/*#define NDEBUG*/
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#include <debug.h>
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#define RT_BITMAP 2
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@ -81,16 +81,6 @@ typedef struct {
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#define ATTRIB 0x3c0
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#define STATUS 0x3da
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typedef struct _VideoMode {
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unsigned short VidSeg;
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unsigned char Misc;
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unsigned char Feature;
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unsigned short Seq[6];
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unsigned short Crtc[25];
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unsigned short Gfx[9];
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unsigned char Attrib[21];
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} VideoMode;
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typedef struct {
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ULONG r;
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ULONG g;
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@ -112,27 +102,11 @@ long y80[480];
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static HANDLE BitmapThreadHandle;
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static CLIENT_ID BitmapThreadId;
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static BOOLEAN BitmapIsDrawn;
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static BOOLEAN BitmapThreadShouldTerminate;
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static PUCHAR BootimageBitmap;
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static BOOLEAN InGraphicsMode = FALSE;
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/* DATA **********************************************************************/
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static VideoMode Mode12 = {
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0xa000, 0xe3, 0x00,
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{0x03, 0x01, 0x0f, 0x00, 0x06 },
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{0x5f, 0x4f, 0x50, 0x82, 0x54, 0x80, 0x0b, 0x3e, 0x00, 0x40, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x59, 0xea, 0x8c, 0xdf, 0x28, 0x00, 0xe7, 0x04, 0xe3,
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0xff},
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x0f, 0xff},
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{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
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0x0c, 0x0d, 0x0e, 0x0f, 0x81, 0x00, 0x0f, 0x00, 0x00}
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};
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static BOOLEAN VideoAddressSpaceInitialized = FALSE;
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static PVOID NonBiosBaseAddress;
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static PDRIVER_OBJECT BootVidDriverObject = NULL;
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@ -336,60 +310,13 @@ vgaPreCalc()
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}
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}
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static __inline__ VOID
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InbvOutxay(PUSHORT ad, UCHAR x, UCHAR y)
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{
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USHORT xy = (x << 8) + y;
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WRITE_PORT_USHORT(ad, xy);
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}
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static VOID
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InbvSetMode(VideoMode mode)
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{
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unsigned char x;
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WRITE_PORT_UCHAR((PUCHAR)MISC, mode.Misc);
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WRITE_PORT_UCHAR((PUCHAR)STATUS, 0);
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WRITE_PORT_UCHAR((PUCHAR)FEATURE, mode.Feature);
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for(x=0; x<5; x++)
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{
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InbvOutxay((PUSHORT)SEQ, mode.Seq[x], x);
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}
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WRITE_PORT_USHORT((PUSHORT)CRTC, 0x11);
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WRITE_PORT_USHORT((PUSHORT)CRTC, (mode.Crtc[0x11] & 0x7f));
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for(x=0; x<25; x++)
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{
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InbvOutxay((PUSHORT)CRTC, mode.Crtc[x], x);
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}
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for(x=0; x<9; x++)
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{
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InbvOutxay((PUSHORT)GRAPHICS, mode.Gfx[x], x);
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}
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x=READ_PORT_UCHAR((PUCHAR)FEATURE);
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for(x=0; x<21; x++)
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{
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WRITE_PORT_UCHAR((PUCHAR)ATTRIB, x);
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WRITE_PORT_UCHAR((PUCHAR)ATTRIB, mode.Attrib[x]);
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}
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x=READ_PORT_UCHAR((PUCHAR)STATUS);
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WRITE_PORT_UCHAR((PUCHAR)ATTRIB, 0x20);
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}
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static VOID
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InbvInitVGAMode(VOID)
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{
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KV86M_REGISTERS Regs;
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NTSTATUS Status;
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ULONG i;
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vidmem = (char *)(0xd0000000 + 0xa0000);
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memset(&Regs, 0, sizeof(Regs));
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@ -397,8 +324,21 @@ InbvInitVGAMode(VOID)
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Status = Ke386CallBios(0x10, &Regs);
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assert(NT_SUCCESS(Status));
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/* Get VGA registers into the correct state (mainly for setting up the palette registers correctly) */
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InbvSetMode(Mode12);
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/* Get VGA registers into the correct state */
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/* Reset the internal flip-flop. */
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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/* Write the 16 palette registers. */
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for (i = 0; i < 16; i++)
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{
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WRITE_PORT_UCHAR((PUCHAR)ATTRIB, i);
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WRITE_PORT_UCHAR((PUCHAR)ATTRIB, i);
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}
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/* Write the mode control register - graphics mode; 16 color DAC. */
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WRITE_PORT_UCHAR((PUCHAR)ATTRIB, 0x10);
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WRITE_PORT_UCHAR((PUCHAR)ATTRIB, 0x81);
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/* Write the color select register - select first 16 DAC registers. */
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WRITE_PORT_UCHAR((PUCHAR)ATTRIB, 0x14);
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WRITE_PORT_UCHAR((PUCHAR)ATTRIB, 0x00);
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/* Get the VGA into the mode we want to work with */
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WRITE_PORT_UCHAR((PUCHAR)0x3ce,0x08); /* Set */
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@ -409,6 +349,9 @@ InbvInitVGAMode(VOID)
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WRITE_PORT_UCHAR((PUCHAR)0x3ce,0x08);
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WRITE_PORT_UCHAR((PUCHAR)0x3cf,0xff);
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/* Set the PEL mask. */
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WRITE_PORT_UCHAR((PUCHAR)0x3c6, 0xff);
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/* Zero out video memory (clear a possibly trashed screen) */
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RtlZeroMemory(vidmem, 64000);
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@ -439,22 +382,28 @@ VidCleanUp(VOID)
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reset to cleanup the hardware state.
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*/
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InGraphicsMode = FALSE;
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BitmapThreadShouldTerminate = TRUE;
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}
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static __inline__ VOID
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InbvSetColor(int cindex, unsigned char red, unsigned char green, unsigned char blue)
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{
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red = red / (256 / 64);
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green = green / (256 / 64);
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blue = blue / (256 / 64);
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red = (red * 63) / 255;
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green = (green * 63) / 255;
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blue = (blue * 63) / 255;
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WRITE_PORT_UCHAR((PUCHAR)0x03c8, cindex);
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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WRITE_PORT_UCHAR((PUCHAR)0x03c9, red);
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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WRITE_PORT_UCHAR((PUCHAR)0x03c9, green);
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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WRITE_PORT_UCHAR((PUCHAR)0x03c9, blue);
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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}
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@ -463,10 +412,16 @@ InbvSetBlackPalette()
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{
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register ULONG r = 0;
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/* Disable screen and enable palette access. */
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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WRITE_PORT_UCHAR((PUCHAR)0x3c0, 0x00);
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for (r = 0; r < 16; r++)
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{
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InbvSetColor(r, 0, 0, 0);
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}
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/* Enable screen and enable palette access. */
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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WRITE_PORT_UCHAR((PUCHAR)0x3c0, 0x20);
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}
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@ -686,6 +641,9 @@ InbvFadeUpPalette()
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for (i = 0; i < PALETTE_FADE_STEPS; i++)
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{
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/* Disable screen and enable palette access. */
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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WRITE_PORT_UCHAR((PUCHAR)0x3c0, 0x00);
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for (c = 0; c < bminfo->bV5ClrUsed; c++)
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{
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/* Add the delta */
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@ -709,6 +667,10 @@ InbvFadeUpPalette()
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/* Update the hardware */
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InbvSetColor(c, r, g, b);
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}
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/* Enable screen and disable palette access. */
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(VOID)READ_PORT_UCHAR((PUCHAR)FEATURE);
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WRITE_PORT_UCHAR((PUCHAR)0x3c0, 0x20);
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/* Wait for a bit. */
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Interval.QuadPart = -PALETTE_FADE_TIME;
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KeDelayExecutionThread(KernelMode, FALSE, &Interval);
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}
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@ -728,15 +690,6 @@ InbvBitmapThreadMain(PVOID Ignored)
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}
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BitmapIsDrawn = TRUE;
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for(;;)
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{
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if (BitmapThreadShouldTerminate)
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{
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DPRINT("Terminating\n");
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return;
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}
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ZwYieldExecution();
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}
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}
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@ -764,7 +717,6 @@ VidInitialize(VOID)
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InGraphicsMode = TRUE;
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BitmapIsDrawn = FALSE;
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BitmapThreadShouldTerminate = FALSE;
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Status = PsCreateSystemThread(&BitmapThreadHandle,
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THREAD_ALL_ACCESS,
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@ -777,6 +729,7 @@ VidInitialize(VOID)
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{
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return FALSE;
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}
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NtClose(BitmapThreadHandle);
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InbvDeinitializeVideoAddressSpace();
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VideoAddressSpaceInitialized = FALSE;
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