126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/* $NetBSD: boot.c,v 1.3 2003/08/07 16:30:01 agc 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. 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 <loadfile.h>
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#include "libsa.h"
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/*
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* Default the name (really tape segment number).
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* The defaults assume the following tape layout:
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* segment 0: tapeboot
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* segment 1: netbsd.sun3 (RAMDISK3)
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* segment 2: netbsd.sun3x (RAMDISK3X)
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* segment 3: miniroot image
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* segment 4: netbsd.sun2 (RAMDISK)
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* Therefore, the default name is "1" or "2" or "4"
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* for sun3, sun3x, and sun2, respectively.
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*/
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char defname[32] = "1";
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char line[80];
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int
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main()
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{
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char *cp, *file;
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void *entry;
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u_long marks[MARK_MAX];
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u_long mark_start;
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int fd;
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printf(">> %s tapeboot [%s]\n", bootprog_name, bootprog_rev);
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prom_get_boot_info();
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/*
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* Can not hold open the tape device as is done
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* in the other boot programs because it does
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* its position-to-segment on open.
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*/
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/* Assume the Sun3/Sun3x load start. */
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memset(marks, 0, sizeof(marks));
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mark_start = 0;
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/* If running on a Sun3X, use segment 2. */
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if (_is3x)
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defname[0] = '2';
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/*
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* If running on a Sun2, use segment 4 and
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* do the special MMU setup.
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*/
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else if (_is2) {
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defname[0] = '4';
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mark_start = sun2_map_mem_load();
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}
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file = defname;
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cp = prom_bootfile;
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if (cp && *cp)
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file = cp;
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for (;;) {
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if (prom_boothow & RB_ASKNAME) {
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printf("tapeboot: segment? [%s]: ", defname);
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gets(line);
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if (line[0])
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file = line;
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else
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file = defname;
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} else
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printf("tapeboot: loading segment %s\n", file);
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marks[MARK_START] = mark_start;
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if ((fd = loadfile(file, marks, LOAD_KERNEL)) != -1) {
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break;
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}
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printf("tapeboot: segment %s: %s\n", file, strerror(errno));
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prom_boothow |= RB_ASKNAME;
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}
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close(fd);
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entry = (void *)marks[MARK_ENTRY];
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if (_is2) {
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printf("relocating program...");
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entry = sun2_map_mem_run(entry);
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}
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printf("Starting program at 0x%x\n", entry);
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chain_to(entry);
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}
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