1 /* $NetBSD: cpu.c,v 1.6 2022/03/03 06:27:03 riastradh Exp $ */
2
3 /*
4 * Copyright (c) 2000 Soren S. Jorvang. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions, and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.6 2022/03/03 06:27:03 riastradh Exp $");
30
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/device.h>
34 #include <sys/cpu.h>
35
36 #include <mips/locore.h>
37
38 #include <machine/autoconf.h>
39
40 #include "ioconf.h"
41
42 static int cpumatch(device_t, cfdata_t, void *);
43 static void cpuattach(device_t, device_t, void *);
44
45 CFATTACH_DECL_NEW(cpu, 0,
46 cpumatch, cpuattach, NULL, NULL);
47
48 static int cpu_attached;
49
50 int
cpumatch(device_t parent,cfdata_t cf,void * aux)51 cpumatch(device_t parent, cfdata_t cf, void *aux)
52 {
53 struct mainbus_attach_args *ma = aux;
54
55 /* make sure that we're looking for a CPU. */
56 if (strcmp(ma->ma_name, cpu_cd.cd_name) != 0)
57 return 0;
58
59 return !cpu_attached;
60 }
61
62 void
cpuattach(device_t parent,device_t self,void * aux)63 cpuattach(device_t parent, device_t self, void *aux)
64 {
65
66 struct cpu_info * const ci = curcpu();
67
68 ci->ci_dev = self;
69 device_set_private(self, ci);
70
71 aprint_normal(": ");
72 cpu_attached = 1;
73
74 cpu_identify(self);
75 }
76