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      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 (at) 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
     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
     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