1 /*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: @(#)autoconf.c 7.1 (Berkeley) 5/9/91
37 */
38
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD: releng/5.2/sys/amd64/amd64/autoconf.c 122940 2003-11-21 03:02:00Z peter $");
41
42 /*
43 * Setup the system to run on the current machine.
44 *
45 * Configure() is called at boot time and initializes the vba
46 * device tables and the memory controller monitoring. Available
47 * devices are determined (from possibilities mentioned in ioconf.c),
48 * and the drivers are initialized.
49 */
50 #include "opt_bootp.h"
51 #include "opt_isa.h"
52 #include "opt_nfs.h"
53 #include "opt_nfsroot.h"
54 #include "opt_bus.h"
55
56 #include <sys/param.h>
57 #include <sys/systm.h>
58 #include <sys/bus.h>
59 #include <sys/conf.h>
60 #include <sys/reboot.h>
61 #include <sys/kernel.h>
62 #include <sys/malloc.h>
63 #include <sys/mount.h>
64 #include <sys/cons.h>
65
66 #include <sys/socket.h>
67 #include <net/if.h>
68 #include <net/if_dl.h>
69 #include <net/if_types.h>
70 #include <net/if_var.h>
71 #include <net/ethernet.h>
72 #include <netinet/in.h>
73 #include <nfs/rpcv2.h>
74 #include <nfs/nfsproto.h>
75 #include <nfsclient/nfs.h>
76 #include <nfsclient/nfsdiskless.h>
77
78 #include <machine/md_var.h>
79
80 #ifdef DEV_ISA
81 #include <isa/isavar.h>
82
83 device_t isa_bus_device = 0;
84 #endif
85
86 static void configure_first(void *);
87 static void configure(void *);
88 static void configure_final(void *);
89
90 SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
91 /* SI_ORDER_SECOND is hookable */
92 SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
93 /* SI_ORDER_MIDDLE is hookable */
94 SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
95
96 /*
97 * Determine i/o configuration for a machine.
98 */
99 static void
100 configure_first(dummy)
101 void *dummy;
102 {
103 }
104
105 static void
106 configure(dummy)
107 void *dummy;
108 {
109
110 /*
111 * Enable interrupts on the processor. The interrupts are still
112 * disabled in the interrupt controllers until interrupt handlers
113 * are registered.
114 */
115 enable_intr();
116
117 /* nexus0 is the top of the i386 device tree */
118 device_add_child(root_bus, "nexus", 0);
119
120 /* initialize new bus architecture */
121 root_bus_configure();
122
123 #ifdef DEV_ISA
124 /*
125 * Explicitly probe and attach ISA last. The isa bus saves
126 * it's device node at attach time for us here.
127 */
128 if (isa_bus_device)
129 isa_probe_children(isa_bus_device);
130 #endif
131 }
132
133 static void
134 configure_final(dummy)
135 void *dummy;
136 {
137
138 cninit_finish();
139 if (bootverbose)
140 printf("Device configuration finished.\n");
141 cold = 0;
142 }
143
144 /*
145 * Do legacy root filesystem discovery.
146 */
147 void
148 cpu_rootconf()
149 {
150 #ifdef BOOTP
151 bootpc_init();
152 #endif
153 #if defined(NFSCLIENT) && defined(NFS_ROOT)
154 #if !defined(BOOTP_NFSROOT)
155 nfs_setup_diskless();
156 if (nfs_diskless_valid)
157 #endif
158 rootdevnames[0] = "nfs:";
159 #endif
160 }
161 SYSINIT(cpu_rootconf, SI_SUB_ROOT_CONF, SI_ORDER_FIRST, cpu_rootconf, NULL)
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