1/*	$NetBSD: autoconf.c,v 1.6 2011/06/18 06:44:27 matt Exp $	*/
2
3/*-
4 * Copyright (c) 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 *	@(#)autoconf.c	7.1 (Berkeley) 5/9/91
35 */
36
37/*
38 * Setup the system to run on the current machine.
39 *
40 * Configure() is called at boot time and initializes the vba
41 * device tables and the memory controller monitoring.  Available
42 * devices are determined (from possibilities mentioned in ioconf.c),
43 * and the drivers are initialized.
44 */
45
46#include <sys/cdefs.h>
47__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.6 2011/06/18 06:44:27 matt Exp $");
48
49#include <sys/param.h>
50#include <sys/systm.h>
51#include <sys/buf.h>
52#include <sys/disklabel.h>
53#include <sys/conf.h>
54#include <sys/reboot.h>
55#include <sys/device.h>
56
57#include <powerpc/pte.h>
58
59void findroot(void);
60void disable_intr(void);
61void enable_intr(void);
62
63/*
64 * Determine i/o configuration for a machine.
65 */
66void
67cpu_configure(void)
68{
69
70	if (config_rootfound("mainbus", NULL) == NULL)
71		panic("configure: mainbus not configured");
72
73	genppc_cpu_configure();
74}
75
76void
77cpu_rootconf(void)
78{
79	findroot();
80
81	printf("boot device: %s\n",
82	    booted_device ? device_xname(booted_device) : "<unknown>");
83
84	rootconf();
85}
86
87u_long	bootdev = 0;		/* should be dev_t, but not until 32 bits */
88
89/* XXX remove? */
90/*
91 * Attempt to find the device from which we were booted.
92 * If we can do so, and not instructed not to do so,
93 * change rootdev to correspond to the load device.
94 */
95void
96findroot(void)
97{
98	int unit, part;
99	device_t dv;
100	const char *name;
101
102#if 0
103	printf("howto %x bootdev %x ", boothowto, bootdev);
104#endif
105
106	if ((bootdev & B_MAGICMASK) != (u_long)B_DEVMAGIC)
107		return;
108
109	name = devsw_blk2name((bootdev >> B_TYPESHIFT) & B_TYPEMASK);
110	if (name == NULL)
111		return;
112
113	part = (bootdev >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
114	unit = (bootdev >> B_UNITSHIFT) & B_UNITMASK;
115
116	if ((dv = device_find_by_driver_unit(name, unit)) != NULL) {
117		booted_device = dv;
118		booted_partition = part;
119	}
120}
121
122void
123device_register(device_t dev, void *aux)
124{
125	/* do nothing */
126}
127