1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/* $NetBSD: autoconf.c,v 1.11 2021/08/07 16:18:52 thorpej Exp $ */
/*-
* Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Raytheon BBN Technologies Corp and Defense Advanced Research Projects
* Agency and which was developed by Matt Thomas of 3am Software Foundry.
*
* This material is based upon work supported by the Defense Advanced Research
* Projects Agency and Space and Naval Warfare Systems Center, Pacific, under
* Contract No. N66001-09-C-2073.
* Approved for Public Release, Distribution Unlimited
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.11 2021/08/07 16:18:52 thorpej Exp $");
#define __INTR_PRIVATE
#include "locators.h"
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/cpu.h>
#include <sys/device.h>
#include <sys/intr.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <powerpc/booke/cpuvar.h>
/*
* Determine device configuration for a machine.
*/
void
cpu_configure(void)
{
intr_init();
calc_delayconst();
if (config_rootfound("mainbus", NULL) == NULL)
panic("%s: mainbus not configured", __func__);
spl0();
}
static volatile int rootconf_timo = 1;
/*
* Setup root device.
* Configure swap area.
*/
void
cpu_rootconf(void)
{
/*
* We wait up to 10 seconds for a bootable device to be found.
*/
while (rootconf_timo > 0) {
if (booted_device != NULL) {
aprint_normal_dev(booted_device, "boot device\n");
break;
}
if (root_string[0] != '\0'
&& (booted_device = device_find_by_xname(root_string)) != NULL) {
aprint_normal_dev(booted_device, "boot device\n");
break;
}
if (EWOULDBLOCK == kpause("autoconf", true, 1, NULL)) {
rootconf_timo--;
}
}
rootconf();
}
void
device_register(device_t dev, void *aux)
{
if (cpu_md_ops.md_device_register != NULL)
(*cpu_md_ops.md_device_register)(dev, aux);
if (booted_device == NULL) {
if (root_string[0] != '\0'
&& !strcmp(device_xname(dev), root_string)) {
aprint_normal_dev(dev, "boot device\n");
booted_device = dev;
} else {
rootconf_timo = 5 * hz;
}
}
}
static bool mainbus_found;
static int
mainbus_print(void *aux, const char *pnp)
{
struct mainbus_attach_args *ma = aux;
if (pnp != NULL)
return QUIET;
if (pnp)
aprint_normal("%s at %s", ma->ma_name, pnp);
if (ma->ma_node != MAINBUSCF_NODE_DEFAULT)
aprint_normal(" node %d", ma->ma_node);
return (UNCONF);
}
static int
mainbus_match(device_t parent, cfdata_t cf, void *aux)
{
return mainbus_found == false;
}
static void
mainbus_attach(device_t parent, device_t self, void *aux)
{
struct mainbus_attach_args ma;
mainbus_found = true;
aprint_normal("\n");
ma.ma_name = "cpunode";
ma.ma_node = 0;
ma.ma_memt = curcpu()->ci_softc->cpu_bst;
ma.ma_le_memt = curcpu()->ci_softc->cpu_le_bst;
ma.ma_dmat = &booke_bus_dma_tag;
config_found(self, &ma, mainbus_print, CFARGS_NONE);
}
CFATTACH_DECL_NEW(mainbus, 0, mainbus_match, mainbus_attach, NULL, NULL);
|