2 * Copyright (c) 1990 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
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9 * modification, are permitted provided that the following conditions
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32 * from: @(#)autoconf.c 7.1 (Berkeley) 5/9/91
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
39 * Setup the system to run on the current machine.
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.
46 #include "opt_bootp.h"
50 #include <sys/param.h>
51 #include <sys/systm.h>
54 #include <sys/reboot.h>
55 #include <sys/kernel.h>
56 #include <sys/malloc.h>
57 #include <sys/mount.h>
60 #include <sys/socket.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>
68 #include <machine/bootinfo.h>
69 #include <machine/md_var.h>
72 #include <isa/isavar.h>
74 device_t isa_bus_device = 0;
77 static void configure_first(void *);
78 static void configure(void *);
79 static void configure_final(void *);
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);
88 * Determine i/o configuration for a machine.
91 configure_first(dummy)
95 /* nexus0 is the top of the i386 device tree */
96 device_add_child(root_bus, "nexus", 0);
105 * Enable interrupts on the processor. The interrupts are still
106 * disabled in the interrupt controllers until interrupt handlers
111 /* initialize new bus architecture */
112 root_bus_configure();
116 * Explicitly probe and attach ISA last. The isa bus saves
117 * it's device node at attach time for us here.
120 isa_probe_children(isa_bus_device);
125 configure_final(dummy)
136 * Print out the BIOS's idea of the disk geometries.
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;
143 bios_geom = bootinfo.bi_bios_geom[i];
146 * XXX the bootstrap punts a 1200K floppy geometry
147 * when the get-disk-geometry interrupt fails. Skip
148 * drives that have this geometry.
150 if (bios_geom == 0x4f020f)
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;
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);
163 printf(" %d accounted for\n", bootinfo.bi_n_bios_used);
166 printf("Device configuration finished.\n");