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/* $OpenBSD: boot.c,v 1.36 2007/06/26 10:34:41 tom Exp $ */
/*
* Copyright (c) 2003 Dale Rahn
* Copyright (c) 1997,1998 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.
*
* 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 <lib/libsa/loadfile.h>
#include <lib/libkern/funcs.h>
#include "cmd.h"
#ifndef KERNEL
#define KERNEL "/bsd"
#endif
char prog_ident[40];
char *progname = "BOOT";
extern const char version[];
struct cmd_state cmd;
/* bootprompt can be set by MD code to avoid prompt first time round */
int bootprompt = 1;
char *kernelfile = KERNEL; /* can be changed by MD code */
void
boot(dev_t bootdev)
{
int fd;
int try = 0, st;
u_long marks[MARK_MAX];
machdep();
snprintf(prog_ident, sizeof(prog_ident),
">> OpenBSD/" MACHINE " %s %s", progname, version);
printf("%s\n", prog_ident);
devboot(bootdev, cmd.bootdev);
strlcpy(cmd.image, kernelfile, sizeof(cmd.image));
cmd.boothowto = 0;
cmd.conf = "/etc/boot.conf";
cmd.addr = (void *)DEFAULT_KERNEL_ADDRESS;
cmd.timeout = 5;
st = read_conf();
if (!bootprompt)
snprintf(cmd.path, sizeof cmd.path, "%s:%s",
cmd.bootdev, cmd.image);
while (1) {
/* no boot.conf, or no boot cmd in there */
if (bootprompt && st <= 0)
do {
printf("boot> ");
} while(!getcmd());
st = 0;
bootprompt = 1; /* allow reselect should we fail */
printf("booting %s: ", cmd.path);
marks[MARK_START] = (u_long)cmd.addr;
if ((fd = loadfile(cmd.path, marks, LOAD_ALL)) != -1) {
close(fd);
break;
}
kernelfile = KERNEL;
try++;
strlcpy(cmd.image, kernelfile, sizeof(cmd.image));
printf(" failed(%d). will try %s\n", errno, kernelfile);
if (try < 2) {
if (cmd.timeout > 0)
cmd.timeout++;
} else {
if (cmd.timeout)
printf("Turning timeout off.\n");
cmd.timeout = 0;
}
}
/* exec */
run_loadfile(marks, cmd.boothowto);
}
#ifdef _TEST
int
main()
{
boot(0);
return 0;
}
#endif
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