1 /* $NetBSD: cpu.c,v 1.19 2022/03/03 06:27:03 riastradh Exp $ */
2 /*-
3 * Copyright (c) 1999 Shin Takemura, All rights reserved.
4 * Copyright (c) 1999-2001 SATO Kazumi, 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 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 */
30
31 /*
32 * Copyright (c) 1994, 1995 Carnegie-Mellon University.
33 * All rights reserved.
34 *
35 * Author: Chris G. Demetriou
36 *
37 * Permission to use, copy, modify and distribute this software and
38 * its documentation is hereby granted, provided that both the copyright
39 * notice and this permission notice appear in all copies of the
40 * software, derivative works or modified versions, and any portions
41 * thereof, and that both notices appear in supporting documentation.
42 *
43 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
44 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
45 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
46 *
47 * Carnegie Mellon requests users of this software to return to
48 *
49 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
50 * School of Computer Science
51 * Carnegie Mellon University
52 * Pittsburgh PA 15213-3890
53 *
54 * any improvements or extensions that they make and grant Carnegie the
55 * rights to redistribute these changes.
56 */
57
58 #include <sys/cdefs.h>
59 __KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.19 2022/03/03 06:27:03 riastradh Exp $");
60
61 #include <sys/param.h>
62 #include <sys/systm.h>
63 #include <sys/device.h>
64 #include <sys/cpu.h>
65 #include <sys/bus.h>
66
67 #include <mips/locore.h>
68
69 #include <machine/sysconf.h>
70 #include <machine/autoconf.h>
71
72 /* Definition of the driver for autoconfig. */
73 static int cpumatch(device_t, cfdata_t, void *);
74 static void cpuattach(device_t, device_t, void *);
75
76 CFATTACH_DECL_NEW(cpu, 0,
77 cpumatch, cpuattach, NULL, NULL);
78
79 extern struct cfdriver cpu_cd;
80
81 static int
cpumatch(device_t parent,cfdata_t cf,void * aux)82 cpumatch(device_t parent, cfdata_t cf, void *aux)
83 {
84 struct mainbus_attach_args *ma = aux;
85
86 /* make sure that we're looking for a CPU. */
87 return (strcmp(ma->ma_name, cpu_cd.cd_name) != 0 ? 0 : 1);
88 }
89
90 static void
cpuattach(device_t parent,device_t self,void * aux)91 cpuattach(device_t parent, device_t self, void *aux)
92 {
93 struct cpu_info * const ci = curcpu();
94
95 ci->ci_dev = self;
96 device_set_private(self, ci);
97
98 aprint_normal(": ");
99
100 cpu_identify(self);
101
102 /* install CPU specific idle routine if any. */
103 if (platform.cpu_idle != NULL)
104 mips_locoresw.lsw_cpu_idle = platform.cpu_idle;
105 }
106