Chameleon

Chameleon Commit Details

Date:2010-05-09 07:55:20 (13 years 11 months ago)
Author:Evan Lojewski
Commit:147
Parents: 146
Message:EDID: reads edid from monitor to determine best resolution for main screen.
Changes:
A/branches/meklort/i386/libsaio/edid.c
A/branches/meklort/i386/libsaio/edid.h
M/branches/meklort/i386/boot2/gui.c
M/branches/meklort/i386/libsaio/vbe.c
M/branches/meklort/i386/libsaio/vbe.h

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branches/meklort/i386/libsaio/vbe.c
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return(bb.eax.r.h);␊
}␊
␊
int getEDID( void * edidBlock, UInt8 block)␊
{␊
␉bzero(&bb, sizeof(bb));␊
bb.intno = 0x10;␊
bb.eax.rr = funcGetEDID;␊
␉bb.ebx.r.l= 0x01;␊
␉bb.edx.rr = block;␊
␉␊
bb.es = SEG( edidBlock );␊
bb.edi.rr = OFF( edidBlock );␊
␉␊
bios( &bb );␊
return(bb.eax.r.h);␊
}␊
␊
␊
␊
/*␊
* Default GTF parameter values.␊
*/␊
branches/meklort/i386/libsaio/vbe.h
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funcGetSetPaletteFormat = 0x4F08,␊
funcGetSetPaletteData = 0x4F09,␊
funcGetProtModeInterdace = 0x4F0A,␊
funcGetSetPixelClock = 0x4F0B␊
funcGetSetPixelClock = 0x4F0B,␊
␉funcGetEDID = 0x4F15␊
␊
};␊
␊
enum {␊
typedef unsigned long VBEPalette[256];␊
␊
extern int getVBEInfo(void *vinfo_p);␊
extern int getEDID( void * edidBlock, UInt8 block);␊
extern int getVBEModeInfo(int mode, void *minfo_p);␊
extern int getVBEDACFormat(unsigned char *format);␊
extern int setVBEDACFormat(unsigned char format);␊
branches/meklort/i386/libsaio/edid.c
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/*␊
* edid.c␊
* ␊
*␊
* Created by Evan Lojewski on 12/1/09.␊
* Copyright 2009. All rights reserved.␊
*␊
*/␊
␊
␊
#include "libsaio.h"␊
#include "edid.h"␊
#include "vbe.h"␊
#include "graphics.h"␊
#include "boot.h"␊
␊
void getResolution(UInt32* x, UInt32* y, UInt32* bp)␊
{␊
␉int val;␊
␉static UInt32 xResolution, yResolution, bpResolution;␊
␊
␉if(getIntForKey(kScreenWidth, &val, &bootInfo->bootConfig))␊
␉{␊
␉␉xResolution = val;␊
␉}␊
␉␊
␉if(getIntForKey(kScreenHeight, &val, &bootInfo->bootConfig))␊
␉{␊
␉␉yResolution = val;␊
␉}␊
␊
␉bpResolution = 32;␉// assume 32bits␊
␊
␉␊
␉if(!xResolution || !yResolution || !bpResolution)␊
␉{␊
␉␉␊
␉␉char* edidInfo = readEDID();␊
␉␉␊
␉␉if(!edidInfo) return;␊
␉␉␊
␉␉// TODO: check *all* resolutions reported and either use the highest, or the native resolution (if there is a flag for that)␊
␉␉xResolution = edidInfo[56] | ((edidInfo[58] & 0xF0) << 4);␊
␉␉yResolution = edidInfo[59] | ((edidInfo[61] & 0xF0) << 4);␊
␉␉␊
␉␉//printf("H Active = %d", edidInfo[56] | ((edidInfo[58] & 0xF0) << 4) );␊
␉␉//printf("V Active = %d", edidInfo[59] | ((edidInfo[61] & 0xF0) << 4) );␊
␉␉␊
␉␉␊
␉␉␊
␉␉␊
␉␉free( edidInfo );␊
␉␉␊
␉␉if(!xResolution) xResolution = DEFAULT_SCREEN_WIDTH;␊
␉␉if(!yResolution) yResolution = DEFAULT_SCREEN_HEIGHT;␊
␊
␉}␊
␊
␉*x = xResolution;␊
␉*y = yResolution;␊
␉*bp = bpResolution;␊
␊
}␊
␊
char* readEDID()␊
{␊
␉SInt16 last_reported = -1;␊
␉UInt8 edidInfo[EDID_BLOCK_SIZE];␊
␊
␉UInt8 header1[] = {0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00};␊
␉UInt8 header2[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};␊
␉␊
␉SInt16 status;␊
␉UInt16 blocks_left = 1;␊
␉␊
␉do␊
␉{␊
␉␉// TODO: This currently only retrieves the *last* block, make the block buffer expand as needed / calculated from the first block␊
␊
␉␉bzero( edidInfo, EDID_BLOCK_SIZE);␊
␊
␉␉status = getEDID(edidInfo, blocks_left);␊
␉␉␊
␉␉␊
␉␉//printf("Buffer location: 0x%X\n", SEG(buffer) << 16 | OFF(buffer));␊
␉␉/*␊
␉␉int j, i;␊
␉␉for (j = 0; j < 8; j++) {␊
␉␉␉for(i = 0; i < 16; i++) printf("0x%X ", ebiosInfo[((i+1) * (j + 1)) - 1]);␊
␊
␉␉}␊
␉␉printf("\n");␊
␉␉*/␊
␉␉␊
␉␉if(status == 0)␊
␉␉{␊
␉␉␉//if( edidInfo[0] == 0x00 || edidInfo[0] == 0xFF)␊
␉␉␉if((memcmp(edidInfo, header1, sizeof(header1)) != 0) ||␊
␉␉␉ (memcmp(edidInfo, header2, sizeof(header2)) != 0) )␊
␉␉␉{␊
␉␉␉␉blocks_left--;␊
␉␉␉␉int reported = edidInfo[ EDID_V1_BLOCKS_TO_GO_OFFSET ];␊
␉␉␉␉␊
␉␉␉␉if ( reported > blocks_left )␊
␉␉␉␉{␊
␉␉␉␉␉␊
␉␉␉␉␉printf("EDID claims %d more blocks left\n", reported);␊
␉␉␉␉}␊
␉␉␉␉␊
␉␉␉␉if ( (last_reported <= reported && last_reported != -1)␊
␉␉␉␉␉|| reported == 0xff␊
␉␉␉␉␉/* 0xff frequently comes up in corrupt edids */␊
␉␉␉␉␉//|| reported == MAGIC␊
␉␉␉␉␉)␊
␉␉␉␉{␊
␉␉␉␉␉printf("Last reported %d\n", last_reported);␊
␉␉␉␉␉printf( "EDID blocks left is wrong.\n"␊
␉␉␉␉␉␉ "Your EDID is probably invalid.\n");␊
␉␉␉␉␉return 0;␊
␉␉␉␉}␊
␉␉␉␉else␊
␉␉␉␉{␊
␉␉␉␉␉//printf("Reading EDID block\n");␊
␉␉␉␉␉//printf("H Active = %d", ebiosInfo[56] | ((ebiosInfo[58] & 0xF0) << 4) );␊
␉␉␉␉␉//printf("V Active = %d", ebiosInfo[59] | ((ebiosInfo[61] & 0xF0) << 4) );␊
␊
␉␉␉␉␉last_reported = reported;␊
␉␉␉␉␉blocks_left = reported;␊
␉␉␉␉}␊
␉␉␉} ␊
␉␉␉else␊
␉␉␉{␊
␉␉␉␉printf("Invalid block %d\n", blocks_left);␊
␉␉␉␉printf("Header1 = %d", memcmp(edidInfo, header1, sizeof(header1)) );␊
␉␉␉␉printf("Header2 = %d", memcmp(edidInfo, header2, sizeof(header2)) );␊
␉␉␉␉return 0;␊
␉␉␉}␊
␉␉}␊
␉␉blocks_left = 0;␉␊
␉} while(blocks_left);␊
␊
␉char* ret = malloc(sizeof(edidInfo));␊
␉memcpy(ret, edidInfo, sizeof(edidInfo));␊
␉return ret;␊
}␊
branches/meklort/i386/libsaio/edid.h
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/*␊
* edid.h␊
* ␊
*␊
* Created by Evan Lojewski on 12/1/09.␊
* Copyright 2009. All rights reserved.␊
*␊
*/␊
␊
␊
#define EDID_BLOCK_SIZE␉128␊
#define EDID_V1_BLOCKS_TO_GO_OFFSET 126␊
␊
char* readEDID();␊
void getResolution(UInt32* x, UInt32* y, UInt32* bp);
branches/meklort/i386/boot2/gui.c
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#include "gui.h"␊
#include "appleboot.h"␊
#include "vers.h"␊
#include "edid.h"␊
␊
#define THEME_NAME_DEFAULT␉"Default"␊
static const char *theme_name = THEME_NAME_DEFAULT;␉␊
␊
int initGUI(void)␊
{␊
␉int␉␉val;␊
␉//int␉␉val;␊
#ifdef EMBED_THEME␊
␉config_file_t␉*config;␊
␉␊
␉␉return 1;␊
␉}␊
#endif␊
␉/*␊
␉// parse display size parameters␊
␉if (getIntForKey("screen_width", &val, &bootInfo->themeConfig)) {␊
␉␉screen_params[0] = val;␊
␉␉screen_params[1] = val;␊
␉}␊
␉screen_params[2] = 32;␊
␉*/␊
␉getResolution(&screen_params[0], &screen_params[1], &screen_params[2]);␊
␊
␉␊
␉// Initalizing GUI strucutre.␊
␉bzero(&gui, sizeof(gui_t));␊
␉␊
// drawBootGraphics␊
void drawBootGraphics(void)␊
{␊
␉int pos;␊
␉//int pos;␊
␉int length;␊
␉const char *dummyVal;␊
␉bool legacy_logo;␊
␉␉loadBootGraphics();␊
␉}␊
␊
␉/*␊
␉// parse screen size parameters␊
␉if (getIntForKey("boot_width", &pos, &bootInfo->themeConfig)) {␊
␉␉screen_params[0] = pos;␊
␉␉screen_params[1] = DEFAULT_SCREEN_HEIGHT;␊
␉}␊
␉screen_params[2] = 32;␊
␉*/␊
␉␊
␉getResolution(&screen_params[0], &screen_params[1], &screen_params[2]);␊
␊
␊
␉gui.screen.width = screen_params[0];␊
␉gui.screen.height = screen_params[1];␊
␊

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Revision: 147