autoconf.c revision 1.1 
1/*	$NetBSD: autoconf.c,v 1.1 2002/03/07 14:44:03 simonb Exp $	*/
2
3/*
4 * Copyright 2002 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Simon Burge for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *      This product includes software developed for the NetBSD Project by
20 *      Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/buf.h>
41#include <sys/conf.h>
42#include <sys/device.h>
43
44#include <machine/cpu.h>
45
46struct device *booted_device;
47int booted_partition;
48
49static void	findroot(void);
50
51int		cpuspeed = 100;		/* Until we know more precisely. */
52
53void
54cpu_configure()
55{
56
57	intr_init();
58
59	/* Kick off autoconfiguration. */
60	(void)splhigh();
61	if (config_rootfound("mainbus", "mainbus") == NULL)
62		panic("no mainbus found");
63	(void)spl0();
64}
65
66void
67cpu_rootconf()
68{
69	findroot();
70
71	printf("boot device: %s\n",
72		booted_device ? booted_device->dv_xname : "<unknown>");
73
74	setroot(booted_device, booted_partition);
75}
76
77extern char	bootstring[];
78extern int	netboot;
79
80static void
81findroot(void)
82{
83	struct device *dv;
84
85	if (booted_device)
86		return;
87
88	if ((booted_device == NULL) && netboot == 0)
89		for (dv = alldevs.tqh_first; dv != NULL;
90		     dv = dv->dv_list.tqe_next)
91			if (dv->dv_class == DV_DISK &&
92			    !strcmp(dv->dv_cfdata->cf_driver->cd_name, "wd"))
93				    booted_device = dv;
94
95	/*
96	 * XXX Match up MBR boot specification with BSD disklabel for root?
97	 */
98	booted_partition = 0;
99
100	return;
101}
102
103void
104device_register(dev, aux)
105	struct device *dev;
106	void *aux;
107{
108	if ((booted_device == NULL) && (netboot == 1))
109		if (dev->dv_class == DV_IFNET)
110			booted_device = dev;
111}
112