158 lines
4.2 KiB
C
158 lines
4.2 KiB
C
/* $NetBSD: xxboot.c,v 1.2 2000/07/16 21:56:14 jdolecek Exp $ */
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/*-
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* Copyright (c) 1982, 1986, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)boot.c 8.1 (Berkeley) 6/10/93
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*/
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#include <sys/param.h>
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#include <sys/reboot.h>
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#include <machine/mon.h>
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#include <stand.h>
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#include "libsa.h"
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/*
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* Note that extname is edited based on the running machine type
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* (sun3 vs sun3x). EXTNAMEX is the position of the 'x'.
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*/
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char extname[] = "netbsd.sun3x";
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#define EXTNAMEX (sizeof(extname)-2)
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/*
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* If the PROM did not give us a specific kernel name to use,
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* and did not specify the -a flag (ask), then try the names
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* in the following list.
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*/
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char *kernelnames[] = {
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"netbsd",
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"netbsd.old",
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extname,
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NULL
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};
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char line[80];
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void
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xxboot_main(const char *boot_type)
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{
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struct open_file f;
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char **npp;
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char *cp, *file;
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char *entry;
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int io, x;
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printf(">> %s %s [%s]\n", bootprog_name, boot_type, bootprog_rev);
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prom_get_boot_info();
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/*
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* Hold the raw device open so it will not be
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* closed and reopened on every attempt to
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* load files that did not exist.
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*/
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f.f_flags = F_RAW;
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if (devopen(&f, 0, &file)) {
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printf("%s: devopen failed\n", boot_type);
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return;
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}
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/*
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* Edit the "extended" kernel name based on
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* the type of machine we are running on.
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*/
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if (_is3x == 0)
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extname[EXTNAMEX] = 0;
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/* If we got the "-a" flag, ask for the name. */
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if (prom_boothow & RB_ASKNAME)
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goto just_ask;
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/*
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* If the PROM gave us a file name,
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* it means the user asked for that
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* kernel name explicitly.
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*/
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cp = prom_bootfile;
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if (cp && *cp) {
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file = cp;
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goto try_open;
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}
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/*
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* Try the default kernel names.
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*/
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for (npp = kernelnames; *npp; npp++) {
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file = *npp;
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printf("%s: trying %s\n", boot_type, file);
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if ((io = open(file, 0)) >= 0) {
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/* The open succeeded. */
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goto try_load;
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}
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}
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/*
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* Ask what kernel name to load.
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*/
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for (;;) {
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just_ask:
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file = kernelnames[0];
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printf("filename? [%s]: ", file);
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gets(line);
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if (line[0])
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file = line;
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try_open:
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/* Can we open the file? */
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io = open(file, 0);
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if (io < 0)
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goto err;
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try_load:
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/* The open succeeded. Try loading. */
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printf("%s: loading %s\n", boot_type, file);
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x = load_sun(io, (char *)LOADADDR, &entry);
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close(io);
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if (x == 0)
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break;
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err:
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printf("%s: %s: %s\n", boot_type, file, strerror(errno));
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}
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/* Do the "last close" on the underlying device. */
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f.f_dev->dv_close(&f);
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printf("Starting program at 0x%x\n", entry);
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chain_to((void*)entry);
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}
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