1/*-
2 * Copyright (c) 2001 Jake Burkholder.
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#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include "opt_isa.h"
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/bus.h>
35#include <sys/cons.h>
36#include <sys/kernel.h>
37
38#ifdef DEV_ISA
39#include <isa/isavar.h>
40extern device_t isa_bus_device;
41#endif
42
43static device_t nexusdev;
44
45static void	configure_first(void *);
46static void	configure(void *);
47static void	configure_final(void *);
48
49SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
50/* SI_ORDER_SECOND is hookable */
51SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
52/* SI_ORDER_MIDDLE is hookable */
53SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
54
55/*
56 * Determine i/o configuration for a machine.
57 */
58static void
59configure_first(void *dummy)
60{
61
62	nexusdev = device_add_child(root_bus, "nexus", 0);
63}
64
65static void
66configure(void *dummy)
67{
68
69	root_bus_configure();
70#ifdef DEV_ISA
71	/*
72	 * We bypass isa_probe_children(9) here in order to avoid
73	 * invasive probes done by identify-routines of ISA drivers,
74	 * which in turn can trigger master/target aborts, and the
75	 * addition of ISA hints, which might erroneously exist.
76	 */
77	if (isa_bus_device != NULL)
78		(void)bus_generic_attach(isa_bus_device);
79#endif
80}
81
82static void
83configure_final(void *dummy)
84{
85
86	cninit_finish();
87	cold = 0;
88}
89