1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
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/param.h>
32 #include <sys/systm.h>
33 #include <sys/bus.h>
34 #include <sys/cons.h>
35 #include <sys/kernel.h>
36
37 #include <machine/intr_machdep.h>
38
39 #ifdef DEV_ISA
40 extern void isa_probe_children(device_t dev);
41
42 device_t isa_bus_device;
43 #endif
44
45 static device_t nexusdev;
46
47 static void configure_first(void *);
48 static void configure(void *);
49 static void configure_final(void *);
50
51 SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
52 /* SI_ORDER_SECOND is hookable */
53 SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
54 /* SI_ORDER_MIDDLE is hookable */
55 SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
56
57 /*
58 * Determine i/o configuration for a machine.
59 */
60 static void
configure_first(void * dummy)61 configure_first(void *dummy)
62 {
63
64 nexusdev = device_add_child(root_bus, "nexus", 0);
65 }
66
67 static void
configure(void * dummy)68 configure(void *dummy)
69 {
70
71 root_bus_configure();
72 #ifdef DEV_ISA
73 if (isa_bus_device)
74 isa_probe_children(isa_bus_device);
75 #endif
76 }
77
78 static void
configure_final(void * dummy)79 configure_final(void *dummy)
80 {
81
82 /*
83 * Now that we're guaranteed to have a PIC driver (or we'll never
84 * have one), program it with all the previously setup interrupts.
85 */
86 powerpc_enable_intr();
87
88 /* Enable external interrupts. */
89 mtmsr(mfmsr() | PSL_EE);
90
91 cninit_finish();
92 cold = 0;
93 }
94