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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * from: @(#)autoconf.c 7.1 (Berkeley) 5/9/91
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 /*
39 * Setup the system to run on the current machine.
40 *
41 * Configure() is called at boot time and initializes the vba
42 * device tables and the memory controller monitoring. Available
43 * devices are determined (from possibilities mentioned in ioconf.c),
44 * and the drivers are initialized.
45 */
46 #include "opt_bootp.h"
47 #include "opt_isa.h"
48 #include "opt_bus.h"
49
50 #include <sys/param.h>
51 #include <sys/systm.h>
52 #include <sys/bus.h>
53 #include <sys/conf.h>
54 #include <sys/reboot.h>
55 #include <sys/kernel.h>
56 #include <sys/malloc.h>
57 #include <sys/mount.h>
58 #include <sys/cons.h>
59
60 #include <sys/socket.h>
61 #include <net/if.h>
62 #include <net/if_dl.h>
63 #include <net/if_types.h>
64 #include <net/if_var.h>
65 #include <net/ethernet.h>
66 #include <netinet/in.h>
67
68 #include <machine/bootinfo.h>
69 #include <machine/md_var.h>
70
71 #ifdef DEV_ISA
72 #include <isa/isavar.h>
73
74 device_t isa_bus_device = 0;
75 #endif
76
77 static void configure_first(void *);
78 static void configure(void *);
79 static void configure_final(void *);
80
81 SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
82 /* SI_ORDER_SECOND is hookable */
83 SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
84 /* SI_ORDER_MIDDLE is hookable */
85 SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
86
87 /*
88 * Determine i/o configuration for a machine.
89 */
90 static void
configure_first(dummy)91 configure_first(dummy)
92 void *dummy;
93 {
94
95 /* nexus0 is the top of the i386 device tree */
96 device_add_child(root_bus, "nexus", 0);
97 }
98
99 static void
configure(dummy)100 configure(dummy)
101 void *dummy;
102 {
103
104 /*
105 * Enable interrupts on the processor. The interrupts are still
106 * disabled in the interrupt controllers until interrupt handlers
107 * are registered.
108 */
109 enable_intr();
110
111 /* initialize new bus architecture */
112 root_bus_configure();
113
114 #ifdef DEV_ISA
115 /*
116 * Explicitly probe and attach ISA last. The isa bus saves
117 * it's device node at attach time for us here.
118 */
119 if (isa_bus_device)
120 isa_probe_children(isa_bus_device);
121 #endif
122 }
123
124 static void
configure_final(dummy)125 configure_final(dummy)
126 void *dummy;
127 {
128
129 cninit_finish();
130
131 if (bootverbose) {
132 #ifdef PC98
133 int i;
134
135 /*
136 * Print out the BIOS's idea of the disk geometries.
137 */
138 printf("BIOS Geometries:\n");
139 for (i = 0; i < N_BIOS_GEOM; i++) {
140 unsigned long bios_geom;
141 int max_cylinder, max_head, max_sector;
142
143 bios_geom = bootinfo.bi_bios_geom[i];
144
145 /*
146 * XXX the bootstrap punts a 1200K floppy geometry
147 * when the get-disk-geometry interrupt fails. Skip
148 * drives that have this geometry.
149 */
150 if (bios_geom == 0x4f020f)
151 continue;
152
153 printf(" %x:%08lx ", i, bios_geom);
154 max_cylinder = bios_geom >> 16;
155 max_head = (bios_geom >> 8) & 0xff;
156 max_sector = bios_geom & 0xff;
157 printf(
158 "0..%d=%d cylinders, 0..%d=%d heads, 1..%d=%d sectors\n",
159 max_cylinder, max_cylinder + 1,
160 max_head, max_head + 1,
161 max_sector, max_sector);
162 }
163 printf(" %d accounted for\n", bootinfo.bi_n_bios_used);
164 #endif
165
166 printf("Device configuration finished.\n");
167 }
168 cold = 0;
169 }
170