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

348 lines
7.8 KiB
C

/* $NetBSD: main.c,v 1.14 1998/08/13 17:41:10 rvb Exp $ */
/*
* Copyright (c) 1996, 1997
* Matthias Drochner. All rights reserved.
* Copyright (c) 1996, 1997
* Perry E. Metzger. All rights reserved.
* Copyright (c) 1997
* Jason R. Thorpe. 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/libsa/stand.h>
#include <lib/libkern/libkern.h>
#include <libi386.h>
extern void ls __P((char*));
extern int bios2dev __P((int, char**, int*));
int errno;
extern int boot_biosdev;
extern char bootprog_name[], bootprog_rev[], bootprog_date[],
bootprog_maker[];
char *names[] = {
"netbsd", "netbsd.gz",
"netbsd.old", "netbsd.old.gz",
"onetbsd", "onetbsd.gz",
#ifdef notyet
"netbsd.el", "netbsd.el.gz",
#endif /*notyet*/
};
#define NUMNAMES (sizeof(names)/sizeof(char *))
#define DEFFILENAME names[0]
#define MAXDEVNAME 16
#define TIMEOUT 5
static char *default_devname;
static int default_unit, default_partition;
static char *default_filename;
void command_help __P((char *));
void command_ls __P((char *));
void command_quit __P((char *));
void command_boot __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 },
{ "dev", command_dev },
{ NULL, NULL },
};
int
parsebootfile(fname, fsname, devname, unit, partition, file)
const char *fname;
char **fsname; /* out */
char **devname; /* out */
unsigned int *unit, *partition; /* out */
const char **file; /* out */
{
const char *col, *help;
*fsname = "ufs";
*devname = default_devname;
*unit = default_unit;
*partition = default_partition;
*file = default_filename;
if (fname == NULL)
return(0);
if((col = strchr(fname, ':'))) { /* 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) {
sprintf(buf, "%s%d%c:%s", devname, unit, 'a' + partition, file);
return(buf);
}
return("(invalid)");
}
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");
}
if (exec_netbsd(filename, 0, howto) < 0)
printf("boot: %s: %s\n", sprint_bootsel(filename),
strerror(errno));
else
printf("boot returned\n");
}
void
print_banner(void)
{
printf("\n");
printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev);
printf(">> (%s, %s)\n", bootprog_maker, bootprog_date);
printf(">> Memory: %d/%d k\n", getbasemem(), getextmem());
printf(
#ifdef COMPAT_OLDBOOT
"Use hd1a:netbsd to boot sd0 when wd0 is also installed\n"
#endif
"Press return to boot now, any other key for boot menu\n");
}
/*
* note: normally, void main() wouldn't be legal, but this isn't a
* hosted environment...
*/
int
main()
{
int currname;
char c;
#ifdef SUPPORT_SERIAL
initio(SUPPORT_SERIAL);
#else
initio(CONSDEV_PC);
#endif
gateA20();
print_banner();
/* try to set default device to what BIOS tells us */
bios2dev(boot_biosdev, &default_devname, &default_unit);
default_partition = 0;
/* if the user types "boot" without filename */
default_filename = DEFFILENAME;
currname = 0;
for (;;) {
printf("booting %s - starting in ",
sprint_bootsel(names[currname]));
c = awaitkey(TIMEOUT, 1);
if ((c != '\r') && (c != '\n') && (c != '\0')) {
printf("type \"?\" or \"help\" for help.\n");
bootmenu(); /* does not return */
}
/*
* try pairs of names[] entries, foo and foo.gz
*/
/* don't print "booting..." again */
bootit(names[currname], 0, 0);
/* since it failed, try switching bootfile. */
currname = ++currname % NUMNAMES;
/* now try the second of a pair, presumably the .gz
version. */
/* XXX duped code sucks. */
bootit(names[currname], 0, 1);
/* since it failed, try switching bootfile. */
currname = ++currname % NUMNAMES;
}
return (0);
}
/* 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"
"dev xd[N[x]]:\n"
"help|?\n"
"quit\n");
}
void
command_ls(arg)
char *arg;
{
char *save = default_filename;
default_filename = "/";
ls(arg);
default_filename = save;
}
/* ARGSUSED */
void
command_quit(arg)
char *arg;
{
printf("Rebooting... goodbye...\n");
delay(1000000);
reboot();
/* Note: we shouldn't get to this point! */
panic("Could not reboot!");
exit(0);
}
void
command_boot(arg)
char *arg;
{
char *filename;
int howto;
if (parseboot(arg, &filename, &howto))
bootit(filename, howto, 1);
}
void
command_dev(arg)
char *arg;
{
static char savedevname[MAXDEVNAME + 1];
char *fsname, *devname;
const char *file; /* dummy */
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;
}