NetBSD/sys/arch/sun3/stand/libsa/xxboot.c

157 lines
4.1 KiB
C

/* $NetBSD: xxboot.c,v 1.1 1998/07/01 22:51:43 gwr Exp $ */
/*-
* Copyright (c) 1982, 1986, 1990, 1993
* The Regents of the University of California. 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 acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)boot.c 8.1 (Berkeley) 6/10/93
*/
#include <sys/param.h>
#include <sys/reboot.h>
#include <machine/mon.h>
#include <stand.h>
#include "libsa.h"
/*
* Note that extname is edited based on the running machine type
* (sun3 vs sun3x). EXTNAMEX is the position of the 'x'.
*/
char extname[] = "netbsd.sun3x";
#define EXTNAMEX (sizeof(extname)-2)
/*
* If the PROM did not give us a specific kernel name to use,
* and did not specify the -a flag (ask), then try the names
* in the following list.
*/
char *kernelnames[] = {
"netbsd",
"netbsd.old",
extname,
NULL
};
char line[80];
main()
{
struct open_file f;
char **npp;
char *cp, *file;
char *entry;
int io, x;
printf(">> NetBSD " XX "boot [%s]\n", version);
prom_get_boot_info();
/*
* Hold the raw device open so it will not be
* closed and reopened on every attempt to
* load files that did not exist.
*/
f.f_flags = F_RAW;
if (devopen(&f, 0, &file)) {
printf(XX "boot: devopen failed\n");
return;
}
/*
* Edit the "extended" kernel name based on
* the type of machine we are running on.
*/
if (_is3x == 0)
extname[EXTNAMEX] = 0;
/* If we got the "-a" flag, ask for the name. */
if (prom_boothow & RB_ASKNAME)
goto just_ask;
/*
* If the PROM gave us a file name,
* it means the user asked for that
* kernel name explicitly.
*/
cp = prom_bootfile;
if (cp && *cp) {
file = cp;
goto try_open;
}
/*
* Try the default kernel names.
*/
for (npp = kernelnames; *npp; npp++) {
file = *npp;
printf(XX "boot: trying %s\n", file);
if ((io = open(file, 0)) >= 0) {
/* The open succeeded. */
goto try_load;
}
}
/*
* Ask what kernel name to load.
*/
for (;;) {
just_ask:
file = kernelnames[0];
printf("filename? [%s]: ", file);
gets(line);
if (line[0])
file = line;
try_open:
/* Can we open the file? */
io = open(file, 0);
if (io < 0)
goto err;
try_load:
/* The open succeeded. Try loading. */
printf(XX "boot: loading %s\n", file);
x = load_sun(io, (char *)LOADADDR, &entry);
close(io);
if (x == 0)
break;
err:
printf(XX "boot: %s: %s\n", file, strerror(errno));
}
/* Do the "last close" on the underlying device. */
f.f_dev->dv_close(&f);
printf("Starting program at 0x%x\n", entry);
chain_to((void*)entry);
}