coreboot-kgpe-d16/util/vgabios/testbios.c

369 lines
7.3 KiB
C

/* SPDX-License-Identifier: GPL-2.0-only */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/io.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <getopt.h>
#include <string.h>
#include <stdarg.h>
#include <stdtypes.h>
#define die(x) { perror(x); exit(1); }
#define warn(x) { perror(x); }
#include <x86emu/x86emu.h>
#include <console/console.h>
#include <arch/byteorder.h>
#include "device.h"
#include "testbios.h"
#include "pci-userspace.h"
int X86EMU_set_debug(int debug);
biosemu_device_t bios_device;
extern int teststart, testend;
#define BIOSMEM_SIZE (1024 * 1024)
unsigned char biosmem[BIOSMEM_SIZE];
int verbose = 0;
static unsigned char *mapitin(char *file, off_t where, size_t size)
{
void *z;
int fd = open(file, O_RDWR, 0);
if (fd < 0)
die(file);
z = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, where);
if (z == (void *) -1)
die("mmap");
close(fd);
return z;
}
static unsigned short get_device(char *arg_val)
{
unsigned short devfn=0;
long bus=0,dev=0,fn=0,need_pack=0;
char *tok;
tok = strsep(&arg_val,":");
if (arg_val != NULL) {
bus = strtol(tok,0,16);
need_pack = 1;
}
else {
arg_val = tok;
}
tok = strsep(&arg_val,".");
if (arg_val != NULL) {
dev = strtol(tok,0,16);
fn = strtol(arg_val,0,16);
need_pack = 1;
}
else {
if (need_pack ==1 && (strlen(tok))) {
dev = strtol(tok,0,16);
}
}
if ( need_pack == 1) {
devfn = bus<<8 | (dev<<3) | fn;
}
else {
devfn = strtol(tok, 0, 0);
}
return devfn;
}
int printk(int msg_level, const char *fmt, ...)
{
va_list args;
int i;
putchar('<');
putchar('0' + msg_level);
putchar('>');
putchar(' ');
va_start(args, fmt);
i = vprintf(fmt, args);
va_end(args);
return i;
}
static void usage(char *name)
{
printf
("Usage: %s [-c codesegment] [-s size] [-b base] [-i ip] [-t] "
"<filename> ...\n", name);
}
/* main entry into YABEL biosemu, arguments are:
* *biosmem = pointer to virtual memory
* biosmem_size = size of the virtual memory
* *dev = pointer to the device to be initialised
* rom_addr = address of the OptionROM to be executed, if this is = 0, YABEL
* will look for an ExpansionROM BAR and use the code from there.
*/
u32
biosemu(u8 *biosmem, u32 biosmem_size, struct device * dev, unsigned long
rom_addr);
int main(int argc, char **argv)
{
int ret;
char *absegname = NULL;
void *abseg = NULL;
int c, trace = 0;
unsigned char *cp;
char *filename;
ssize_t size = 0;
int base = 0;
int have_size = 0, have_base = 0, have_ip = 0, have_cs = 0;
int have_devfn = 0;
int parse_rom = 0;
//char *fsegname = 0;
//unsigned char *fsegptr;
unsigned short initialip = 0, initialcs = 0, devfn = 0;
//X86EMU_intrFuncs intFuncs[256];
int debugflag = 0;
struct device *dev;
//const char *optstring = "vh?b:i:c:s:tpd:";
const char *optstring = "vh?b:i:c:s:tpd:";
while (1) {
int option_index = 0;
static struct option long_options[] = {
{"verbose", 0, 0, 'v'},
{"help", 0, 0, 'h'},
{"trace", 0, 0, 't'},
{"base", 1, 0, 'b'},
//{"fseg", 1, 0, 'f'},
{"instructionpointer", 1, 0, 'i'},
{"codesegment", 1, 0, 'c'},
{"absegment", 1, 0, 'a'},
{"size", 1, 0, 's'},
{"parserom", 0, 0, 'p'},
{"device", 1, 0, 'd'},
{"debug", 1, 0, 'D'},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, optstring, long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'v':
verbose = 1;
break;
case 'h':
case '?':
usage(argv[0]);
return 0;
case 't':
trace = 1;
break;
//case 'b':
// base = strtol(optarg, 0, 0);
// have_base = 1;
// break;
case 'i':
initialip = strtol(optarg, 0, 0);
have_ip = 1;
break;
case 'c':
initialcs = strtol(optarg, 0, 0);
have_cs = 1;
break;
case 's':
size = strtol(optarg, 0, 0);
have_size = 1;
break;
case 'p':
parse_rom = 1;
break;
// case 'f':
// fsegname = optarg;
// break;
case 'a':
absegname = optarg;
break;
case 'd':
devfn = get_device(optarg);
have_devfn = 1;
break;
case 'D':
debugflag = strtol(optarg, 0, 0);
break;
default:
printf("Unknown option\n");
usage(argv[0]);
return 1;
}
}
if (optind >= argc) {
printf("Filename missing.\n");
usage(argv[0]);
return 1;
}
while (optind < argc) {
printf("running file %s\n", argv[optind]);
filename = argv[optind];
optind++;
/* normally we would do continue, but for
* now only one filename is supported.
*/
/* continue; */
break;
}
if (!have_size) {
printf("No size specified. defaulting to 32k\n");
size = 32 * 1024;
}
if (!have_base) {
printf("No base specified. defaulting to 0xc0000\n");
base = 0xc0000;
}
//if (!have_cs) {
// printf("No initial code segment specified. defaulting to 0xc000\n");
// initialcs = 0xc000;
//}
if (!have_ip) {
printf
("No initial instruction pointer specified. defaulting to 0x0003\n");
initialip = 0x0003;
}
if (parse_rom)
printf("Parsing rom images not implemented.\n");
//printf("Point 1 int%x vector at %x\n", 0x42, getIntVect(0x42));
#if 0
if (initialip == 0x0003) {
if ((devfn == 0) || (have_devfn == 0)) {
printf("WARNING! It appears you are trying to run an option ROM.\n");
printf(" (initial ip = 0x0003)\n");
if (have_devfn) {
printf(" However, the device you have specified is 0x00\n");
printf(" It is very unlikely that your device is at this address\n");
printf(" Please check your -d option\n");
}
else {
printf(" Please specify a device with -d\n");
printf(" The default is not likely to work\n");
}
}
}
#endif
if (absegname) {
abseg = mapitin(absegname, (off_t) 0xa0000, 0x20000);
if (!abseg)
die(absegname);
}
ioperm(0, 0x400, 1);
if (iopl(3) < 0) {
warn("iopl failed, continuing anyway");
}
/* Emergency sync ;-) */
sync();
sync();
/* Setting up interrupt environment.
* basically this means initializing PCI and
* intXX handlers.
*/
pci_initialize();
#if 0
for (i = 0; i < 256; i++)
intFuncs[i] = do_int;
X86EMU_setupIntrFuncs(intFuncs);
#endif
cp = mapitin(filename, (off_t) 0, size);
if (devfn) {
printf("Loading ax with BusDevFn = %x\n",devfn);
}
#if 0
current->ax = devfn ? devfn : 0xff;
current->dx = 0x80;
// current->ip = 0;
for (i = 0; i < size; i++)
wrb(base + i, cp[i]);
if (fsegname) {
fsegptr = mapitin(fsegname, (off_t) 0, 0x10000);
for (i = 0; i < 0x10000; i++)
wrb(0xf0000 + i, fsegptr[i]);
} else {
const char *date = "01/01/99";
for (i = i; date[i]; i++)
wrb(0xffff5 + i, date[i]);
wrb(0xffff7, '/');
wrb(0xffffa, '/');
}
/* cpu setup */
X86_AX = devfn ? devfn : 0xff;
X86_DX = 0x80;
X86_EIP = initialip;
X86_CS = initialcs;
/* Initialize stack and data segment */
X86_SS = 0x0030;
X86_DS = 0x0040;
X86_SP = 0xfffe;
/* We need a sane way to return from bios
* execution. A hlt instruction and a pointer
* to it, both kept on the stack, will do.
*/
pushw(0xf4f4); /* hlt; hlt */
pushw(X86_SS);
pushw(X86_SP + 2);
X86_ES = 0x0000;
#endif
if (trace) {
printf("Switching to single step mode.\n");
//X86EMU_trace_on();
}
if (debugflag) {
printf("Enable Debug = %x.\n",debugflag);
//X86EMU_set_debug(debugflag);
}
#if 0
X86EMU_exec();
#endif
ret = biosemu(biosmem, BIOSMEM_SIZE, dev, base);
#if 0
current = &p;
X86EMU_setMemBase(biosmem, sizeof(biosmem));
M.abseg = (unsigned long)abseg;
X86EMU_setupPioFuncs(&myfuncs);
#endif
/* Cleaning up */
pci_exit();
return 0;
}