autoconf.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1998 Doug Rabson
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include "opt_isa.h"
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD: stable/11/sys/powerpc/powerpc/autoconf.c 330897 2018-03-14 03:19:51Z eadler $");
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/bus.h>
37#include <sys/cons.h>
38#include <sys/kernel.h>
39
40#include <machine/intr_machdep.h>
41
42#ifdef DEV_ISA
43extern void isa_probe_children(device_t dev);
44
45device_t isa_bus_device;
46#endif
47
48static device_t nexusdev;
49
50static void	configure_first(void *);
51static void	configure(void *);
52static void	configure_final(void *);
53
54SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
55/* SI_ORDER_SECOND is hookable */
56SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
57/* SI_ORDER_MIDDLE is hookable */
58SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
59
60/*
61 * Determine i/o configuration for a machine.
62 */
63static void
64configure_first(void *dummy)
65{
66
67	nexusdev = device_add_child(root_bus, "nexus", 0);
68}
69
70static void
71configure(void *dummy)
72{
73
74	root_bus_configure();
75#ifdef DEV_ISA
76	if (isa_bus_device)
77		isa_probe_children(isa_bus_device);
78#endif
79}
80
81static void
82configure_final(void *dummy)
83{
84
85	/*
86	 * Now that we're guaranteed to have a PIC driver (or we'll never
87	 * have one), program it with all the previously setup interrupts.
88	 */
89	powerpc_enable_intr();
90
91	/* Enable external interrupts. */
92	mtmsr(mfmsr() | PSL_EE);
93
94	cninit_finish();
95	cold = 0;
96}
97