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: stable/11/sys/x86/x86/autoconf.c 332304 2018-04-08 20:52:09Z emaste $");
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#ifdef PC98
69#include <machine/bootinfo.h>
70#endif
71#include <machine/md_var.h>
72
73#ifdef DEV_ISA
74#include <isa/isavar.h>
75
76device_t isa_bus_device = 0;
77#endif
78
79static void	configure_first(void *);
80static void	configure(void *);
81static void	configure_final(void *);
82
83SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
84/* SI_ORDER_SECOND is hookable */
85SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
86/* SI_ORDER_MIDDLE is hookable */
87SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
88
89/*
90 * Determine i/o configuration for a machine.
91 */
92static void
93configure_first(void *dummy)
94{
95
96	/* nexus0 is the top of the x86 device tree */
97	device_add_child(root_bus, "nexus", 0);
98}
99
100static void
101configure(void *dummy)
102{
103
104	/* initialize new bus architecture */
105	root_bus_configure();
106
107#ifdef DEV_ISA
108	/*
109	 * Explicitly probe and attach ISA last.  The isa bus saves
110	 * it's device node at attach time for us here.
111	 */
112	if (isa_bus_device)
113		isa_probe_children(isa_bus_device);
114#endif
115}
116
117static void
118configure_final(void *dummy)
119{
120
121	cninit_finish();
122
123	if (bootverbose) {
124#ifdef PC98
125		int i;
126
127		/*
128		 * Print out the BIOS's idea of the disk geometries.
129		 */
130		printf("BIOS Geometries:\n");
131		for (i = 0; i < N_BIOS_GEOM; i++) {
132			unsigned long bios_geom;
133			int max_cylinder, max_head, max_sector;
134
135			bios_geom = bootinfo.bi_bios_geom[i];
136
137			/*
138			 * XXX the bootstrap punts a 1200K floppy geometry
139			 * when the get-disk-geometry interrupt fails.  Skip
140			 * drives that have this geometry.
141			 */
142			if (bios_geom == 0x4f020f)
143				continue;
144
145			printf(" %x:%08lx ", i, bios_geom);
146			max_cylinder = bios_geom >> 16;
147			max_head = (bios_geom >> 8) & 0xff;
148			max_sector = bios_geom & 0xff;
149			printf(
150		"0..%d=%d cylinders, 0..%d=%d heads, 1..%d=%d sectors\n",
151			       max_cylinder, max_cylinder + 1,
152			       max_head, max_head + 1,
153			       max_sector, max_sector);
154		}
155		printf(" %d accounted for\n", bootinfo.bi_n_bios_used);
156#endif
157
158		printf("Device configuration finished.\n");
159	}
160	cold = 0;
161}
162