autoconf.c revision 78884
1/*-
2 * Copyright (c) 1998 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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
24 * SUCH DAMAGE.
25 */
26
27#ifndef lint
28static const char rcsid[] =
29  "$FreeBSD: head/sys/powerpc/powerpc/autoconf.c 78880 2001-06-27 12:20:48Z benno $";
30#endif
31
32#include "opt_bootp.h"
33#include "opt_nfs.h"
34#include "opt_nfsroot.h"
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/conf.h>
39#include <sys/disklabel.h>
40#include <sys/diskslice.h> /* for BASE_SLICE, MAX_SLICES */
41#include <sys/ipl.h>
42#include <sys/reboot.h>
43#include <sys/kernel.h>
44#include <sys/mount.h>
45#include <sys/sysctl.h>
46#include <sys/bus.h>
47#include <sys/devicestat.h>
48#include <sys/cons.h>
49
50#include <machine/md_var.h>
51#include <machine/bootinfo.h>
52#include <machine/trap.h>
53
54#include <cam/cam.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>
60
61static void	configure __P((void *));
62SYSINIT(configure, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL)
63
64extern int nfs_diskless_valid;
65
66dev_t	rootdev = NODEV;
67dev_t	dumpdev = NODEV;
68
69/*
70 * Determine i/o configuration for a machine.
71 */
72static void
73configure(void *dummy)
74{
75	unsigned int	msr;
76
77	cold = 0;
78
79	msr = mfmsr();
80	msr = PSL_EE|PSL_FP|PSL_ME|PSL_IR|PSL_DR|PSL_RI;
81	mtmsr(msr);
82	msr = mfmsr();
83}
84