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/i386/i386/autoconf.c 121994 2003-11-03 22:20:50Z jhb $");
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/bootinfo.h>
79 #include <machine/md_var.h>
80
81 #ifdef DEV_ISA
82 #include <isa/isavar.h>
83
84 device_t isa_bus_device = 0;
85 #endif
86
87 static void configure_first(void *);
88 static void configure(void *);
89 static void configure_final(void *);
90
91 SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
92 /* SI_ORDER_SECOND is hookable */
93 SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
94 /* SI_ORDER_MIDDLE is hookable */
95 SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
96
97 /*
98 * Determine i/o configuration for a machine.
99 */
100 static void
101 configure_first(dummy)
102 void *dummy;
103 {
104 }
105
106 static void
107 configure(dummy)
108 void *dummy;
109 {
110
111 /*
112 * Enable interrupts on the processor. The interrupts are still
113 * disabled in the interrupt controllers until interrupt handlers
114 * are registered.
115 */
116 enable_intr();
117
118 /* nexus0 is the top of the i386 device tree */
119 device_add_child(root_bus, "nexus", 0);
120
121 /* initialize new bus architecture */
122 root_bus_configure();
123
124 #ifdef DEV_ISA
125 /*
126 * Explicitly probe and attach ISA last. The isa bus saves
127 * it's device node at attach time for us here.
128 */
129 if (isa_bus_device)
130 isa_probe_children(isa_bus_device);
131 #endif
132 }
133
134 static void
135 configure_final(dummy)
136 void *dummy;
137 {
138
139 cninit_finish();
140
141 if (bootverbose) {
142 #ifdef PC98
143 {
144 int i;
145 /*
146 * Print out the BIOS's idea of the disk geometries.
147 */
148 printf("BIOS Geometries:\n");
149 for (i = 0; i < N_BIOS_GEOM; i++) {
150 unsigned long bios_geom;
151 int max_cylinder, max_head, max_sector;
152
153 bios_geom = bootinfo.bi_bios_geom[i];
154
155 /*
156 * XXX the bootstrap punts a 1200K floppy geometry
157 * when the get-disk-geometry interrupt fails. Skip
158 * drives that have this geometry.
159 */
160 if (bios_geom == 0x4f010f)
161 continue;
162
163 printf(" %x:%08lx ", i, bios_geom);
164 max_cylinder = bios_geom >> 16;
165 max_head = (bios_geom >> 8) & 0xff;
166 max_sector = bios_geom & 0xff;
167 printf(
168 "0..%d=%d cylinders, 0..%d=%d heads, 1..%d=%d sectors\n",
169 max_cylinder, max_cylinder + 1,
170 max_head, max_head + 1,
171 max_sector, max_sector);
172 }
173 printf(" %d accounted for\n", bootinfo.bi_n_bios_used);
174 }
175 #endif
176
177 printf("Device configuration finished.\n");
178 }
179 cold = 0;
180 }
181
182 /*
183 * Do legacy root filesystem discovery.
184 */
185 void
186 cpu_rootconf()
187 {
188 #ifdef BOOTP
189 bootpc_init();
190 #endif
191 #if defined(NFSCLIENT) && defined(NFS_ROOT)
192 #if !defined(BOOTP_NFSROOT)
193 nfs_setup_diskless();
194 if (nfs_diskless_valid)
195 #endif
196 rootdevnames[0] = "nfs:";
197 #endif
198 }
199 SYSINIT(cpu_rootconf, SI_SUB_ROOT_CONF, SI_ORDER_FIRST, cpu_rootconf, NULL)
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