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