34df659687
Three years ago in commit f62beb6f36 ajax
deleted the code that could have set this format string to anything
else, so just use the format string literal. This makes GCC happy since
it can check the argument types, which, by the way, weren't correct
since this format string doesn't need any arguments.
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>
328 lines
8.2 KiB
C
328 lines
8.2 KiB
C
/*
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* XFree86 int10 module
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* execute BIOS int 10h calls in x86 real mode environment
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* Copyright 1999 Egbert Eich
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include "xf86.h"
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#include "xf86_OSproc.h"
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#include "compiler.h"
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#include "xf86Pci.h"
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#define _INT10_PRIVATE
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#if 0
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#include "int10Defines.h"
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#endif
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#include "xf86int10.h"
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#define REG pInt
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typedef enum {
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OPT_NOINT10,
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OPT_INIT_PRIMARY,
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} INT10Opts;
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static const OptionInfoRec INT10Options[] = {
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{OPT_NOINT10, "NoINT10", OPTV_BOOLEAN, {0}, FALSE },
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{OPT_INIT_PRIMARY, "InitPrimary", OPTV_BOOLEAN, {0}, FALSE },
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{ -1, NULL, OPTV_NONE, {0}, FALSE },
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};
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#ifdef DEBUG
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void
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dprint(unsigned long start, unsigned long size)
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{
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int i,j;
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char *c = (char *)start;
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for (j = 0; j < (size >> 4); j++) {
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char *d = c;
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ErrorF("\n0x%lx: ",(unsigned long)c);
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for (i = 0; i<16; i++)
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ErrorF("%2.2x ",(unsigned char) (*(c++)));
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c = d;
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for (i = 0; i<16; i++) {
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ErrorF("%c",((((CARD8)(*c)) > 32) && (((CARD8)(*c)) < 128)) ?
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(unsigned char) (*(c)): '.');
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c++;
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}
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}
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ErrorF("\n");
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}
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#endif
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#ifndef _PC
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/*
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* here we are really paranoid about faking a "real"
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* BIOS. Most of this information was pulled from
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* dosemu.
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*/
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void
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setup_int_vect(xf86Int10InfoPtr pInt)
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{
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int i;
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/* let the int vects point to the SYS_BIOS seg */
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for (i = 0; i < 0x80; i++) {
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MEM_WW(pInt, i << 2, 0);
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MEM_WW(pInt, (i << 2) + 2, SYS_BIOS >> 4);
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}
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reset_int_vect(pInt);
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/* font tables default location (int 1F) */
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MEM_WW(pInt,0x1f<<2,0xfa6e);
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/* int 11 default location (Get Equipment Configuration) */
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MEM_WW(pInt, 0x11 << 2, 0xf84d);
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/* int 12 default location (Get Conventional Memory Size) */
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MEM_WW(pInt, 0x12 << 2, 0xf841);
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/* int 15 default location (I/O System Extensions) */
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MEM_WW(pInt, 0x15 << 2, 0xf859);
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/* int 1A default location (RTC, PCI and others) */
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MEM_WW(pInt, 0x1a << 2, 0xff6e);
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/* int 05 default location (Bound Exceeded) */
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MEM_WW(pInt, 0x05 << 2, 0xff54);
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/* int 08 default location (Double Fault) */
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MEM_WW(pInt, 0x08 << 2, 0xfea5);
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/* int 13 default location (Disk) */
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MEM_WW(pInt, 0x13 << 2, 0xec59);
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/* int 0E default location (Page Fault) */
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MEM_WW(pInt, 0x0e << 2, 0xef57);
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/* int 17 default location (Parallel Port) */
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MEM_WW(pInt, 0x17 << 2, 0xefd2);
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/* fdd table default location (int 1e) */
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MEM_WW(pInt, 0x1e << 2, 0xefc7);
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/* Set Equipment flag to VGA */
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i = MEM_RB(pInt, 0x0410) & 0xCF;
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MEM_WB(pInt, 0x0410, i);
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/* XXX Perhaps setup more of the BDA here. See also int42(0x00). */
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}
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#endif
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int
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setup_system_bios(void *base_addr)
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{
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char *base = (char *) base_addr;
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/*
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* we trap the "industry standard entry points" to the BIOS
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* and all other locations by filling them with "hlt"
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* TODO: implement hlt-handler for these
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*/
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memset(base, 0xf4, 0x10000);
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/* set bios date */
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strcpy(base + 0x0FFF5, "06/11/99");
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/* set up eisa ident string */
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strcpy(base + 0x0FFD9, "PCI_ISA");
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/* write system model id for IBM-AT */
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*((unsigned char *)(base + 0x0FFFE)) = 0xfc;
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return 1;
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}
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void
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reset_int_vect(xf86Int10InfoPtr pInt)
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{
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/*
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* This table is normally located at 0xF000:0xF0A4. However, int 0x42,
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* function 0 (Mode Set) expects it (or a copy) somewhere in the bottom
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* 64kB. Note that because this data doesn't survive POST, int 0x42 should
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* only be used during EGA/VGA BIOS initialisation.
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*/
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static const CARD8 VideoParms[] = {
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/* Timing for modes 0x00 & 0x01 */
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0x38, 0x28, 0x2d, 0x0a, 0x1f, 0x06, 0x19, 0x1c,
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0x02, 0x07, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00,
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/* Timing for modes 0x02 & 0x03 */
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0x71, 0x50, 0x5a, 0x0a, 0x1f, 0x06, 0x19, 0x1c,
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0x02, 0x07, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00,
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/* Timing for modes 0x04, 0x05 & 0x06 */
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0x38, 0x28, 0x2d, 0x0a, 0x7f, 0x06, 0x64, 0x70,
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0x02, 0x01, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00,
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/* Timing for mode 0x07 */
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0x61, 0x50, 0x52, 0x0f, 0x19, 0x06, 0x19, 0x19,
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0x02, 0x0d, 0x0b, 0x0c, 0x00, 0x00, 0x00, 0x00,
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/* Display page lengths in little endian order */
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0x00, 0x08, /* Modes 0x00 and 0x01 */
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0x00, 0x10, /* Modes 0x02 and 0x03 */
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0x00, 0x40, /* Modes 0x04 and 0x05 */
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0x00, 0x40, /* Modes 0x06 and 0x07 */
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/* Number of columns for each mode */
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40, 40, 80, 80, 40, 40, 80, 80,
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/* CGA Mode register value for each mode */
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0x2c, 0x28, 0x2d, 0x29, 0x2a, 0x2e, 0x1e, 0x29,
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/* Padding */
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0x00, 0x00, 0x00, 0x00
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};
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int i;
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for (i = 0; i < sizeof(VideoParms); i++)
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MEM_WB(pInt, i + (0x1000 - sizeof(VideoParms)), VideoParms[i]);
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MEM_WW(pInt, 0x1d << 2, 0x1000 - sizeof(VideoParms));
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MEM_WW(pInt, (0x1d << 2) + 2, 0);
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MEM_WW(pInt, 0x10 << 2, 0xf065);
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MEM_WW(pInt, (0x10 << 2) + 2, SYS_BIOS >> 4);
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MEM_WW(pInt, 0x42 << 2, 0xf065);
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MEM_WW(pInt, (0x42 << 2) + 2, SYS_BIOS >> 4);
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MEM_WW(pInt, 0x6D << 2, 0xf065);
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MEM_WW(pInt, (0x6D << 2) + 2, SYS_BIOS >> 4);
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}
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void
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set_return_trap(xf86Int10InfoPtr pInt)
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{
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/*
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* Here we set the exit condition: We return when we encounter
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* 'hlt' (=0xf4), which we locate at address 0x600 in x86 memory.
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*/
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MEM_WB(pInt, 0x0600, 0xf4);
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/*
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* Allocate a segment for the stack
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*/
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xf86Int10AllocPages(pInt, 1, &pInt->stackseg);
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}
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void *
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xf86HandleInt10Options(ScrnInfoPtr pScrn, int entityIndex)
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{
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EntityInfoPtr pEnt = xf86GetEntityInfo(entityIndex);
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OptionInfoPtr options = NULL;
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if (pEnt->device) {
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pointer configOptions = NULL;
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/* Check if xf86CollectOptions() has already been called */
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if (((pEnt->index < 0) ||
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!pScrn ||
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!(configOptions = pScrn->options)) &&
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pEnt->device)
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configOptions = pEnt->device->options;
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if (configOptions) {
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if (!(options = (OptionInfoPtr) malloc(sizeof(INT10Options))))
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return NULL;
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(void)memcpy(options, INT10Options, sizeof(INT10Options));
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xf86ProcessOptions(pScrn->scrnIndex, configOptions, options);
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}
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}
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free(pEnt);
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return options;
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}
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Bool
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int10skip(const void* options)
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{
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Bool noint10 = FALSE;
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if (!options) return FALSE;
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xf86GetOptValBool(options, OPT_NOINT10, &noint10);
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return noint10;
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}
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Bool
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int10_check_bios(int scrnIndex, int codeSeg, const unsigned char* vbiosMem)
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{
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int size;
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if ((codeSeg & 0x1f) || /* Not 512-byte aligned otherwise */
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((codeSeg << 4) < V_BIOS) ||
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((codeSeg << 4) >= SYS_SIZE))
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return FALSE;
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if (xf86IsPc98())
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return FALSE;
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if ((*vbiosMem != 0x55) || (*(vbiosMem+1) != 0xAA) || !*(vbiosMem+2))
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return FALSE;
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size = *(vbiosMem + 2) * 512;
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if ((size + (codeSeg << 4)) > SYS_SIZE)
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return FALSE;
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if (bios_checksum(vbiosMem, size))
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xf86DrvMsg(scrnIndex, X_INFO, "Bad V_BIOS checksum\n");
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return TRUE;
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}
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Bool
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initPrimary(const void* options)
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{
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Bool initPrimary = FALSE;
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if (!options) return FALSE;
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xf86GetOptValBool(options, OPT_INIT_PRIMARY, &initPrimary);
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return initPrimary;
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}
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BusType
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xf86int10GetBiosLocationType(const xf86Int10InfoPtr pInt)
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{
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BusType location_type;
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EntityInfoPtr pEnt = xf86GetEntityInfo(pInt->entityIndex);
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location_type = pEnt->location.type;
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free(pEnt);
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return location_type;
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}
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#define CHECK_V_SEGMENT_RANGE(x) \
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if (((x) << 4) < V_BIOS) { \
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xf86DrvMsg(pInt->scrnIndex, X_ERROR, \
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"V_BIOS address 0x%lx out of range\n", \
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(unsigned long)(x) << 4); \
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return FALSE; \
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}
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Bool
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xf86int10GetBiosSegment(xf86Int10InfoPtr pInt, void *base)
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{
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unsigned i;
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int cs = ~0;
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int segments[4];
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segments[0] = MEM_RW(pInt, (0x10 << 2) + 2);
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segments[1] = MEM_RW(pInt, (0x42 << 2) + 2);
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segments[2] = V_BIOS >> 4;
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segments[3] = ~0;
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for (i = 0; segments[i] != ~0; i++) {
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unsigned char * vbiosMem;
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cs = segments[i];
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CHECK_V_SEGMENT_RANGE(cs);
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vbiosMem = (unsigned char *)base + (cs << 4);
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if (int10_check_bios(pInt->scrnIndex, cs, vbiosMem)) {
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break;
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}
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}
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if (segments[i] == ~0) {
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xf86DrvMsg(pInt->scrnIndex, X_ERROR, "No V_BIOS found\n");
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return FALSE;
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}
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xf86DrvMsg(pInt->scrnIndex, X_INFO, "Primary V_BIOS segment is: 0x%lx\n",
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(unsigned long)cs);
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pInt->BIOSseg = cs;
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return TRUE;
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}
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