1 /* $NetBSD: autoconf.c,v 1.8 2015/06/10 22:33:06 matt 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/cdefs.h>
39 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.8 2015/06/10 22:33:06 matt Exp $");
40
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/buf.h>
44 #include <sys/conf.h>
45 #include <sys/device.h>
46 #include <sys/cpu.h>
47
48 static void findroot(void);
49
50 void
cpu_configure(void)51 cpu_configure(void)
52 {
53
54 intr_init();
55
56 /* Kick off autoconfiguration. */
57 (void)splhigh();
58 if (config_rootfound("mainbus", NULL) == NULL)
59 panic("no mainbus found");
60
61 /*
62 * Hardware interrupts will be enabled in
63 * sys/arch/mips/mips/mips3_clockintr.c:mips3_initclocks()
64 * to avoid hardclock(9) by CPU INT5 before softclockintr is
65 * initialized in initclocks().
66 */
67 }
68
69 void
cpu_rootconf(void)70 cpu_rootconf(void)
71 {
72 findroot();
73
74 printf("boot device: %s\n",
75 booted_device ? device_xname(booted_device) : "<unknown>");
76
77 rootconf();
78 }
79
80 extern char bootstring[];
81 extern int netboot;
82
83 static void
findroot(void)84 findroot(void)
85 {
86 if (booted_device)
87 return;
88
89 if ((booted_device == NULL) && netboot == 0) {
90 device_t dv;
91 deviter_t di;
92
93 for (dv = deviter_first(&di, DEVITER_F_ROOT_FIRST); dv != NULL;
94 dv = deviter_next(&di)) {
95 if (device_class(dv) == DV_DISK
96 && (device_is_a(dv, "wd")
97 || device_is_a(dv, "sd")
98 || device_is_a(dv, "ld")))
99 booted_device = dv;
100 }
101 deviter_release(&di);
102 }
103
104 /*
105 * XXX Match up MBR boot specification with BSD disklabel for root?
106 */
107 booted_partition = 0;
108 }
109
110 void
device_register(device_t dev,void * aux)111 device_register(device_t dev, void *aux)
112 {
113
114 if ((booted_device == NULL) && (netboot == 1))
115 if (device_class(dev) == DV_IFNET)
116 booted_device = dev;
117 }
118