2 * Copyright (c) 1998 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 static const char rcsid[] =
32 #include "opt_bootp.h"
34 #include "opt_nfsroot.h"
36 #include <sys/param.h>
37 #include <sys/systm.h>
39 #include <sys/disklabel.h>
40 #include <sys/diskslice.h> /* for BASE_SLICE, MAX_SLICES */
42 #include <sys/reboot.h>
43 #include <sys/kernel.h>
44 #include <sys/mount.h>
45 #include <sys/sysctl.h>
47 #include <sys/devicestat.h>
50 #include <machine/md_var.h>
51 #include <machine/bootinfo.h>
52 #include <machine/trap.h>
55 #include <cam/cam_ccb.h>
56 #include <cam/cam_sim.h>
57 #include <cam/cam_periph.h>
58 #include <cam/cam_xpt_sim.h>
59 #include <cam/cam_debug.h>
61 static void configure __P((void *));
62 SYSINIT(configure, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL)
64 extern int nfs_diskless_valid;
66 dev_t rootdev = NODEV;
67 dev_t dumpdev = NODEV;
70 * Determine i/o configuration for a machine.
73 configure(void *dummy)
80 msr = PSL_EE|PSL_FP|PSL_ME|PSL_IR|PSL_DR|PSL_RI;