314 lines
7.5 KiB
C
314 lines
7.5 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/int10/helper_mem.c,v 1.21 2001/05/22 16:24:37 tsi Exp $ */
|
|
/*
|
|
* XFree86 int10 module
|
|
* execute BIOS int 10h calls in x86 real mode environment
|
|
* Copyright 1999 Egbert Eich
|
|
*/
|
|
#include <stdio.h>
|
|
|
|
#define _INT10_PRIVATE
|
|
|
|
#define REG pInt
|
|
#if 0
|
|
typedef enum {
|
|
OPT_NOINT10,
|
|
OPT_INIT_PRIMARY,
|
|
OPT_BIOS_LOCATION
|
|
} INT10Opts;
|
|
|
|
static const OptionInfoRec INT10Options[] = {
|
|
{OPT_NOINT10, "NoINT10", OPTV_BOOLEAN, {0}, FALSE},
|
|
{OPT_INIT_PRIMARY, "InitPrimary", OPTV_BOOLEAN, {0}, FALSE},
|
|
{OPT_BIOS_LOCATION, "BiosLocation", OPTV_STRING, {0}, FALSE},
|
|
{-1, NULL, OPTV_NONE, {0}, FALSE},
|
|
};
|
|
#endif
|
|
|
|
#ifdef CONFIG_DEBUG
|
|
void dprint(unsigned long start, unsigned long size)
|
|
{
|
|
int i, j;
|
|
char *c = (char *) start;
|
|
|
|
for (j = 0; j < (size >> 4); j++) {
|
|
char *d = c;
|
|
printf("\n0x%lx: ", (unsigned long) c);
|
|
for (i = 0; i < 16; i++)
|
|
printf("%2.2x ", (unsigned char) (*(c++)));
|
|
c = d;
|
|
for (i = 0; i < 16; i++) {
|
|
printf("%c", ((((unsigned char) (*c)) > 32) && (((unsigned char) (*c)) < 128)) ?
|
|
(unsigned char) (*(c)) : '.');
|
|
c++;
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
#endif /* CONFIG_DEBUG */
|
|
|
|
#if 0
|
|
#ifndef _PC
|
|
/*
|
|
* here we are really paranoid about faking a "real"
|
|
* BIOS. Most of this information was pulled from
|
|
* dosemu.
|
|
*/
|
|
void setup_int_vect(void)
|
|
{
|
|
int i;
|
|
|
|
/* let the int vects point to the SYS_BIOS seg */
|
|
for (i = 0; i < 0x80; i++) {
|
|
MEM_WW(i << 2, 0);
|
|
MEM_WW((i << 2) + 2, SYS_BIOS >> 4);
|
|
}
|
|
|
|
reset_int_vect(current);
|
|
/* font tables default location (int 1F) */
|
|
MEM_WW(0x1f << 2, 0xfa6e);
|
|
|
|
/* int 11 default location (Get Equipment Configuration) */
|
|
MEM_WW(0x11 << 2, 0xf84d);
|
|
/* int 12 default location (Get Conventional Memory Size) */
|
|
MEM_WW(0x12 << 2, 0xf841);
|
|
/* int 15 default location (I/O System Extensions) */
|
|
MEM_WW(0x15 << 2, 0xf859);
|
|
/* int 1A default location (RTC, PCI and others) */
|
|
MEM_WW(0x1a << 2, 0xff6e);
|
|
/* int 05 default location (Bound Exceeded) */
|
|
MEM_WW(0x05 << 2, 0xff54);
|
|
/* int 08 default location (Double Fault) */
|
|
MEM_WW(0x08 << 2, 0xfea5);
|
|
/* int 13 default location (Disk) */
|
|
MEM_WW(0x13 << 2, 0xec59);
|
|
/* int 0E default location (Page Fault) */
|
|
MEM_WW(0x0e << 2, 0xef57);
|
|
/* int 17 default location (Parallel Port) */
|
|
MEM_WW(0x17 << 2, 0xefd2);
|
|
/* fdd table default location (int 1e) */
|
|
MEM_WW(0x1e << 2, 0xefc7);
|
|
|
|
/* Set Equipment flag to VGA */
|
|
i = MEM_RB(0x0410) & 0xCF;
|
|
MEM_WB(0x0410, i);
|
|
/* XXX Perhaps setup more of the BDA here. See also int42(0x00). */
|
|
}
|
|
#endif
|
|
|
|
int setup_system_bios(void *base_addr)
|
|
{
|
|
char *base = (char *) base_addr;
|
|
|
|
/*
|
|
* we trap the "industry standard entry points" to the BIOS
|
|
* and all other locations by filling them with "hlt"
|
|
* TODO: implement hlt-handler for these
|
|
*/
|
|
memset(base, 0xf4, 0x10000);
|
|
|
|
/* set bios date */
|
|
strcpy(base + 0x0FFF5, "06/11/99");
|
|
/* set up eisa ident string */
|
|
strcpy(base + 0x0FFD9, "PCI_ISA");
|
|
/* write system model id for IBM-AT */
|
|
*((unsigned char *) (base + 0x0FFFE)) = 0xfc;
|
|
|
|
return 1;
|
|
}
|
|
|
|
void reset_int_vect(void)
|
|
{
|
|
/*
|
|
* This table is normally located at 0xF000:0xF0A4. However, int 0x42,
|
|
* function 0 (Mode Set) expects it (or a copy) somewhere in the bottom
|
|
* 64kB. Note that because this data doesn't survive POST, int 0x42 should
|
|
* only be used during EGA/VGA BIOS initialisation.
|
|
*/
|
|
static const unsigned char VideoParms[] = {
|
|
/* Timing for modes 0x00 & 0x01 */
|
|
0x38, 0x28, 0x2d, 0x0a, 0x1f, 0x06, 0x19, 0x1c,
|
|
0x02, 0x07, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00,
|
|
/* Timing for modes 0x02 & 0x03 */
|
|
0x71, 0x50, 0x5a, 0x0a, 0x1f, 0x06, 0x19, 0x1c,
|
|
0x02, 0x07, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00,
|
|
/* Timing for modes 0x04, 0x05 & 0x06 */
|
|
0x38, 0x28, 0x2d, 0x0a, 0x7f, 0x06, 0x64, 0x70,
|
|
0x02, 0x01, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00,
|
|
/* Timing for mode 0x07 */
|
|
0x61, 0x50, 0x52, 0x0f, 0x19, 0x06, 0x19, 0x19,
|
|
0x02, 0x0d, 0x0b, 0x0c, 0x00, 0x00, 0x00, 0x00,
|
|
/* Display page lengths in little endian order */
|
|
0x00, 0x08, /* Modes 0x00 and 0x01 */
|
|
0x00, 0x10, /* Modes 0x02 and 0x03 */
|
|
0x00, 0x40, /* Modes 0x04 and 0x05 */
|
|
0x00, 0x40, /* Modes 0x06 and 0x07 */
|
|
/* Number of columns for each mode */
|
|
40, 40, 80, 80, 40, 40, 80, 80,
|
|
/* CGA Mode register value for each mode */
|
|
0x2c, 0x28, 0x2d, 0x29, 0x2a, 0x2e, 0x1e, 0x29,
|
|
/* Padding */
|
|
0x00, 0x00, 0x00, 0x00
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; i < sizeof(VideoParms); i++)
|
|
MEM_WB(i + (0x1000 - sizeof(VideoParms)), VideoParms[i]);
|
|
MEM_WW(0x1d << 2, 0x1000 - sizeof(VideoParms));
|
|
MEM_WW((0x1d << 2) + 2, 0);
|
|
|
|
printf("SETUP INT\n");
|
|
MEM_WW(0x10 << 2, 0xf065);
|
|
MEM_WW((0x10 << 2) + 2, SYS_BIOS >> 4);
|
|
MEM_WW(0x42 << 2, 0xf065);
|
|
MEM_WW((0x42 << 2) + 2, SYS_BIOS >> 4);
|
|
MEM_WW(0x6D << 2, 0xf065);
|
|
MEM_WW((0x6D << 2) + 2, SYS_BIOS >> 4);
|
|
}
|
|
|
|
void set_return_trap(void)
|
|
{
|
|
/*
|
|
* Here we set the exit condition: We return when we encounter
|
|
* 'hlt' (=0xf4), which we locate at address 0x600 in x86 memory.
|
|
*/
|
|
MEM_WB(0x0600, 0xf4);
|
|
|
|
/*
|
|
* Allocate a segment for the stack
|
|
*/
|
|
xf86Int10AllocPages(1, current->stackseg);
|
|
}
|
|
|
|
void *xf86HandleInt10Options(ScrnInfoPtr pScrn, int entityIndex)
|
|
{
|
|
EntityInfoPtr pEnt = xf86GetEntityInfo(entityIndex);
|
|
OptionInfoPtr options = NULL;
|
|
|
|
if (pEnt->device) {
|
|
pointer configOptions = NULL;
|
|
|
|
/* Check if xf86CollectOptions() has already been called */
|
|
if (((pEnt->index < 0) ||
|
|
!xf86Screens[pEnt->index] ||
|
|
!(configOptions = xf86Screens[pEnt->index]->options)) &&
|
|
pEnt->device)
|
|
configOptions = pEnt->device->options;
|
|
|
|
if (configOptions) {
|
|
if (!(options = (OptionInfoPtr) xalloc(sizeof(INT10Options))))
|
|
return NULL;
|
|
|
|
(void) memcpy(options, INT10Options, sizeof(INT10Options));
|
|
xf86ProcessOptions(pScrn->scrnIndex, configOptions, options);
|
|
}
|
|
}
|
|
xfree(pEnt);
|
|
|
|
return options;
|
|
}
|
|
|
|
Bool int10skip(void *options)
|
|
{
|
|
Bool noint10 = FALSE;
|
|
|
|
if (!options)
|
|
return FALSE;
|
|
|
|
xf86GetOptValBool(options, OPT_NOINT10, &noint10);
|
|
return noint10;
|
|
}
|
|
|
|
Bool int10_check_bios(int scrnIndex, int codeSeg, unsigned char *vbiosMem)
|
|
{
|
|
int size;
|
|
|
|
if ((codeSeg & 0x1f) || /* Not 512-byte aligned otherwise */
|
|
((codeSeg << 4) < V_BIOS) || ((codeSeg << 4) >= SYS_SIZE))
|
|
return FALSE;
|
|
|
|
if (xf86IsPc98())
|
|
return FALSE;
|
|
|
|
if ((*vbiosMem != 0x55) || (*(vbiosMem + 1) != 0xAA) || !*(vbiosMem + 2))
|
|
return FALSE;
|
|
|
|
size = *(vbiosMem + 2) * 512;
|
|
|
|
if ((size + (codeSeg << 4)) > SYS_SIZE)
|
|
return FALSE;
|
|
|
|
if (bios_checksum(vbiosMem, size))
|
|
xf86DrvMsg(scrnIndex, X_WARNING, "Bad V_BIOS checksum\n");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
Bool initPrimary(void *options)
|
|
{
|
|
Bool initPrimary = FALSE;
|
|
|
|
if (!options)
|
|
return FALSE;
|
|
|
|
xf86GetOptValBool(options, OPT_INIT_PRIMARY, &initPrimary);
|
|
return initPrimary;
|
|
}
|
|
|
|
void xf86int10ParseBiosLocation(void *options, xf86int10BiosLocationPtr bios)
|
|
{
|
|
char *s;
|
|
char *p;
|
|
char *str = NULL;
|
|
|
|
if (options)
|
|
str = xf86GetOptValString(options, OPT_BIOS_LOCATION);
|
|
|
|
bios->bus = BUS_NONE;
|
|
if (!str)
|
|
return;
|
|
|
|
s = xstrdup(str);
|
|
p = strtok(s, ":");
|
|
if (xf86NameCmp(p, "pci"))
|
|
bios->bus = BUS_PCI;
|
|
else if (xf86NameCmp(p, "primary"))
|
|
bios->bus = BUS_ISA;
|
|
|
|
xfree(s);
|
|
|
|
if (bios->bus == BUS_NONE)
|
|
return;
|
|
|
|
s = xstrdup(str);
|
|
p = strchr(s, ':');
|
|
|
|
switch (bios->bus) {
|
|
case BUS_ISA:
|
|
if (p)
|
|
bios->location.legacy = atoi(++p);
|
|
else
|
|
bios->location.legacy = 0;
|
|
break;
|
|
case BUS_PCI:
|
|
if (p) {
|
|
bios->location.pci.bus = atoi(++p);
|
|
if ((p = strchr(p, ':'))) {
|
|
bios->location.pci.dev = atoi(++p);
|
|
if ((p = strchr(p, ':'))) {
|
|
bios->location.pci.func = atoi(++p);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* fall through */
|
|
bios->bus = BUS_NONE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
xfree(s);
|
|
}
|
|
|
|
|
|
#endif
|