autoconf.c revision 72011 
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 * $FreeBSD: head/sys/ia64/ia64/autoconf.c 72011 2001-02-04 15:35:10Z peter $
27 */
28
29#include "opt_bootp.h"
30#include "opt_isa.h"
31#include "opt_nfs.h"
32#include "opt_nfsroot.h"
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/conf.h>
37#include <sys/disklabel.h>
38#include <sys/diskslice.h> /* for BASE_SLICE, MAX_SLICES */
39#include <sys/reboot.h>
40#include <sys/kernel.h>
41#include <sys/mount.h>
42#include <sys/sysctl.h>
43#include <sys/bus.h>
44#include <sys/devicestat.h>
45#include <sys/cons.h>
46
47#include <machine/ipl.h>
48#include <machine/md_var.h>
49#include <machine/bootinfo.h>
50
51#include <cam/cam.h>
52#include <cam/cam_ccb.h>
53#include <cam/cam_sim.h>
54#include <cam/cam_periph.h>
55#include <cam/cam_xpt_sim.h>
56#include <cam/cam_debug.h>
57
58static void	configure __P((void *));
59SYSINIT(configure, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL)
60
61#ifdef DEV_ISA
62#include <isa/isavar.h>
63device_t isa_bus_device = 0;
64#endif
65
66extern int nfs_diskless_valid;
67
68dev_t	rootdev = NODEV;
69dev_t	dumpdev = NODEV;
70
71/*
72 * Determine i/o configuration for a machine.
73 */
74static void
75configure(void *dummy)
76{
77	device_add_child(root_bus, "nexus", 0);
78
79	root_bus_configure();
80
81	/*
82	 * Probe ISA devices after everything.
83	 */
84#ifdef DEV_ISA
85	if (isa_bus_device)
86		isa_probe_children(isa_bus_device);
87#endif
88
89	cninit_finish();
90
91	/*
92	 * Now we're ready to handle (pending) interrupts.
93	 * XXX this is slightly misplaced.
94	 */
95	enable_intr();
96
97	cold = 0;
98}
99
100/*
101 * Do legacy root filesystem discovery.  This isn't really
102 * needed on the Alpha, which has always used the loader.
103 */
104void
105cpu_rootconf()
106{
107	int	order = 0;
108#if defined(NFS) && defined(NFS_ROOT)
109#if !defined(BOOTP_NFSROOT)
110	if (nfs_diskless_valid)
111#endif
112		rootdevnames[order++] = "nfs:";
113#endif
114}
115SYSINIT(cpu_rootconf, SI_SUB_ROOT_CONF, SI_ORDER_FIRST, cpu_rootconf, NULL)
116