NetBSD/sys/arch/i386/stand/dosboot/main.c

398 lines
8.8 KiB
C

/* $NetBSD: main.c,v 1.13 1999/04/14 15:22:46 christos Exp $ */
/*
* Copyright (c) 1996, 1997
* Matthias Drochner. All rights reserved.
* Copyright (c) 1996, 1997
* Perry E. Metzger. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgements:
* This product includes software developed for the NetBSD Project
* by Matthias Drochner.
* This product includes software developed for the NetBSD Project
* by Perry E. Metzger.
* 4. The names of the authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/reboot.h>
#include <lib/libkern/libkern.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/ufs.h>
#include <libi386.h>
#ifdef SUPPORT_LYNX
extern int exec_lynx __P((const char*, int));
#endif
int errno;
extern char bootprog_name[], bootprog_rev[], bootprog_date[],
bootprog_maker[];
#define MAXDEVNAME 16
static char *current_fsmode;
static char *default_devname;
static int default_unit, default_partition;
static char *default_filename;
char *sprint_bootsel __P((const char *));
static void bootit __P((const char *, int, int));
void usage __P((void));
int main __P((int, char **));
void command_help __P((char *));
void command_ls __P((char *));
void command_quit __P((char *));
void command_boot __P((char *));
void command_mode __P((char *));
void command_dev __P((char *));
struct bootblk_command commands[] = {
{ "help", command_help },
{ "?", command_help },
{ "ls", command_ls },
{ "quit", command_quit },
{ "boot", command_boot },
{ "mode", command_mode },
{ "dev", command_dev },
{ NULL, NULL },
};
int
parsebootfile(fname, fsmode, devname, unit, partition, file)
const char *fname;
char **fsmode; /* out */
char **devname; /* out */
unsigned int *unit, *partition; /* out */
const char **file; /* out */
{
const char *col, *help;
*fsmode = current_fsmode;
*devname = default_devname;
*unit = default_unit;
*partition = default_partition;
*file = default_filename;
if (fname == NULL)
return (0);
if (strcmp(current_fsmode, "dos") && (col = strchr(fname, ':'))) {
/* no DOS, device given */
static char savedevname[MAXDEVNAME + 1];
int devlen;
unsigned int u = 0, p = 0;
int i = 0;
devlen = col - fname;
if (devlen > MAXDEVNAME)
return (EINVAL);
#define isvalidname(c) ((c) >= 'a' && (c) <= 'z')
if (!isvalidname(fname[i]))
return (EINVAL);
do {
savedevname[i] = fname[i];
i++;
} while (isvalidname(fname[i]));
savedevname[i] = '\0';
#define isnum(c) ((c) >= '0' && (c) <= '9')
if (i < devlen) {
if (!isnum(fname[i]))
return (EUNIT);
do {
u *= 10;
u += fname[i++] - '0';
} while (isnum(fname[i]));
}
#define isvalidpart(c) ((c) >= 'a' && (c) <= 'z')
if (i < devlen) {
if (!isvalidpart(fname[i]))
return (EPART);
p = fname[i++] - 'a';
}
if (i != devlen)
return (ENXIO);
*devname = savedevname;
*unit = u;
*partition = p;
help = col + 1;
} else
help = fname;
if (*help)
*file = help;
return (0);
}
char *
sprint_bootsel(filename)
const char *filename;
{
char *fsname, *devname;
int unit, partition;
const char *file;
static char buf[80];
if (parsebootfile(filename, &fsname, &devname, &unit,
&partition, &file) == 0) {
if (!strcmp(fsname, "dos"))
sprintf(buf, "dos:%s", file);
else if (!strcmp(fsname, "ufs"))
sprintf(buf, "%s%d%c:%s", devname, unit,
'a' + partition, file);
else goto bad;
return (buf);
}
bad:
return ("(invalid)");
}
static void
bootit(filename, howto, tell)
const char *filename;
int howto, tell;
{
if (tell) {
printf("booting %s", sprint_bootsel(filename));
if (howto)
printf(" (howto 0x%x)", howto);
printf("\n");
}
#ifdef SUPPORT_LYNX
if(exec_netbsd(filename, 0, howto) < 0)
printf("boot netbsd: %s: %s\n", sprint_bootsel(filename),
strerror(errno));
else {
printf("boot netbsd returned\n");
return;
}
if (exec_lynx(filename, 0) < 0)
printf("boot lynx: %s: %s\n", sprint_bootsel(filename),
strerror(errno));
else
printf("boot lynx returned\n");
#else
if (exec_netbsd(filename, 0, howto) < 0)
printf("boot: %s: %s\n", sprint_bootsel(filename),
strerror(errno));
else
printf("boot returned\n");
#endif
}
static void
print_banner(void)
{
int extmem = getextmem();
char *s = "";
#ifdef XMS
u_long xmsmem;
if (getextmem1() == 0 && (xmsmem = checkxms()) != 0) {
/*
* With "CONSERVATIVE_MEMDETECT", extmem is 0 because
* getextmem() is getextmem1(). Without, the "smart"
* methods could fail to report all memory as well.
* xmsmem is a few kB less than the actual size, but
* better than nothing.
*/
if (xmsmem > extmem)
extmem = xmsmem;
s = "(xms) ";
}
#endif
printf("\n");
printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev);
printf(">> (%s, %s)\n", bootprog_maker, bootprog_date);
printf(">> Memory: %d/%d %sk\n", getbasemem(), extmem, s);
}
void
usage()
{
printf("dosboot [-u] [-c <commands>] [-i] [filename [-bootopts]]\n");
}
int
main(argc, argv)
int argc;
char **argv;
{
int ch;
int interactive = 0;
int howto;
extern char *optarg;
extern int optind;
initio(CONSDEV_PC);
gateA20();
print_banner();
current_fsmode = "dos";
default_devname = "hd";
default_unit = 0;
default_partition = 0;
default_filename = "netbsd";
while ((ch = getopt(argc, argv, "c:iu")) != -1) {
switch (ch) {
case 'c':
docommand(optarg);
return (1);
break;
case 'i':
interactive = 1;
break;
case 'u':
current_fsmode = "ufs";
break;
default:
usage();
return (1);
}
}
if (interactive) {
printf("type \"?\" or \"help\" for help.\n");
bootmenu();
}
argc -= optind;
argv += optind;
if (argc > 2) {
usage();
return (1);
}
howto = 0;
if (argc > 1 && !parseopts(argv[1], &howto))
return (1);
bootit((argc > 0 ? argv[0] : "netbsd"), howto, 1);
return (1);
}
/* ARGSUSED */
void
command_help(arg)
char *arg;
{
printf("commands are:\n"
"boot [xdNx:][filename] [-adrs]\n"
" (ex. \"sd0a:netbsd.old -s\"\n"
"ls [path]\n"
"mode ufs|dos\n"
"dev xd[N[x]]:\n"
"help|?\n"
"quit\n");
}
void
command_ls(arg)
char *arg;
{
char *help = default_filename;
if (strcmp(current_fsmode, "ufs")) {
printf("UFS only\n");
return;
}
default_filename = "/";
ufs_ls(arg);
default_filename = help;
}
/* ARGSUSED */
void
command_quit(arg)
char *arg;
{
printf("Exiting... goodbye...\n");
exit(0);
}
void
command_boot(arg)
char *arg;
{
char *filename;
int howto;
if (parseboot(arg, &filename, &howto))
bootit(filename, howto, 1);
}
void
command_mode(arg)
char *arg;
{
if (!strcmp("dos", arg))
current_fsmode = "dos";
else if (!strcmp("ufs", arg))
current_fsmode = "ufs";
else
printf("invalid mode\n");
}
void
command_dev(arg)
char *arg;
{
static char savedevname[MAXDEVNAME + 1];
char *fsname, *devname;
const char *file; /* dummy */
if (!strcmp(current_fsmode, "dos")) {
printf("not available in DOS mode\n");
return;
}
if (*arg == '\0') {
printf("%s%d%c:\n", default_devname, default_unit,
'a' + default_partition);
return;
}
if (!strchr(arg, ':') ||
parsebootfile(arg, &fsname, &devname, &default_unit,
&default_partition, &file)) {
command_help(NULL);
return;
}
/* put to own static storage */
strncpy(savedevname, devname, MAXDEVNAME + 1);
default_devname = savedevname;
}