autoconf.c revision 176771 
1/*-
2 * Copyright (c) 1998 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/powerpc/powerpc/autoconf.c 176771 2008-03-03 17:17:00Z raj $");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/bus.h>
33#include <sys/cons.h>
34#include <sys/kernel.h>
35
36#include <machine/intr_machdep.h>
37
38static device_t nexusdev;
39
40static void	configure_first(void *);
41static void	configure(void *);
42static void	configure_final(void *);
43
44SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
45/* SI_ORDER_SECOND is hookable */
46SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
47/* SI_ORDER_MIDDLE is hookable */
48SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
49
50/*
51 * Determine i/o configuration for a machine.
52 */
53static void
54configure_first(void *dummy)
55{
56
57	nexusdev = device_add_child(root_bus, "nexus", 0);
58}
59
60static void
61configure(void *dummy)
62{
63
64	root_bus_configure();
65}
66
67static void
68configure_final(void *dummy)
69{
70
71	/*
72	 * Now that we're guaranteed to have a PIC driver (or we'll never
73	 * have one), program it with all the previously setup interrupts.
74	 */
75	powerpc_enable_intr();
76
77	/* Enable external interrupts. */
78#if defined(AIM)
79	mtmsr(mfmsr() | PSL_EE | PSL_RI);
80#elif defined(E500)
81	mtmsr(mfmsr() | PSL_EE);
82#endif
83	cninit_finish();
84	cold = 0;
85}
86