/*	$NetBSD: boot.c,v 1.6 1995/02/21 09:06:13 mycroft 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 <a.out.h>
#include "stand.h"

/*
 * Boot program... bits in `howto' determine whether boot stops to
 * ask for system name.	 Boot device is derived from ROM provided
 * information.
 */

char line[100];

extern	u_int opendev;
extern	char *lowram;
extern	int noconsole;
extern	int howto, bootdev;

main()
{
	int retry, type;

	printf("%s CPU\nBoot\n", getmachineid());
#ifdef JUSTASK
	howto = RB_ASKNAME|RB_SINGLE;
#else
	if ((howto & RB_ASKNAME) == 0) {
		type = (bootdev >> B_TYPESHIFT) & B_TYPEMASK;
		if ((unsigned)type < ndevs && devsw[type].dv_name)
			strcpy(line, "/netbsd");
		else
			howto |= RB_SINGLE|RB_ASKNAME;
	}
#endif
	for (retry = 0;;) {
		if (!noconsole && (howto & RB_ASKNAME)) {
			printf(": ");
			gets(line);
			if (line[0] == 0) {
				strcpy(line, "/netbsd");
				printf(": %s\n", line);
			}
		} else
			printf(": %s\n", line);
		exec(line, lowram, howto);
		printf("boot: %s\n", strerror(errno));
		howto |= RB_SINGLE|RB_ASKNAME;
	}
}

void
machdep_start(entry, howto, loadaddr, ssym, esym)
	char *entry;
	int howto;
	char *loadaddr;
	char *ssym, *esym;
{

	asm("movl %0,d7" : : "m" (howto));
	asm("movl %0,d6" : : "m" (opendev));
	asm("movl %0,a5" : : "a" (loadaddr));
	asm("movl %0,a4" : : "a" (esym));
	(*((int (*)())entry))();
}