/*	$OpenBSD: boot.c,v 1.5 1997/04/05 23:27:35 mickey Exp $	*/

/*
 * Copyright (c) 1997 Michael Shalayeff
 * 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 Michael Shalayeff.
 * 4. The name of the author 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 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.
 *
 */

#include <sys/param.h>
#include <sys/reboot.h>
#include <sys/stat.h>
#include <libsa.h>
#include <debug.h>
#include "cmd.h"

char *kernels[] = { "bsd",     "bsd.gz",
		    "obsd",    "obsd.gz",
		    "bsd.old", "bsd.old.gz",
		  NULL };

extern	const char version[];
int	boothowto;
u_int	cnvmem, extmem;

void
boot(bootdev)
	dev_t	bootdev;
{
	register char *bootfile = kernels[0];
	register struct cmd_state *cmd;
	register int i;

#ifdef DEBUG
	*(u_int16_t*)0xb8148 = 0x4730;
#endif
	gateA20(1);
#ifndef _TEST
	memprobe();
#endif
#ifdef DEBUG
	*(u_int16_t*)0xb8148 = 0x4f31;
#endif
	cons_probe();
	debug_init();

	printf("\n>> OpenBSD BOOT: %u/%u k [%s]\n", cnvmem, extmem, version);

	/* XXX init cmd here to cut on .data !!! */
	cmd = (struct cmd_state *)alloc(sizeof(*cmd));
	devboot(bootdev, cmd->bootdev);
	cmd->image[0] = '\0';
	cmd->cwd[0] = '/';
	cmd->cwd[1] = '\0';
	cmd->addr = (void *)0x100000;
	cmd->timeout = 50;

	for (i = 0;;) {

		strncpy(cmd->image, bootfile, sizeof(cmd->image));

		do {
			printf("boot> ");
		} while(!getcmd(cmd) && !execmd(cmd));

		if (cmd->rc < 0)
			break;

		printf("\nbooting %s: ", cmd->path);
		exec (cmd->path, cmd->addr, boothowto);

		if(kernels[++i] == NULL)
			bootfile = kernels[i=0];
		else
			bootfile = kernels[i];

		cmd->timeout += 20;

		printf(" failed(%d)\nwill try %s\n", errno, bootfile);
	}
}

#ifdef _TEST
int
main()
{
	boot();
	return 0;
}
#endif