xref: /netbsd-src/sys/arch/hpcmips/hpcmips/cpu.c (revision 42362de5c5d3e56bfb7cde4673410087cb67521c)

/*	$NetBSD: cpu.c,v 1.19 2022/03/03 06:27:03 riastradh Exp $	*/
/*-
 * Copyright (c) 1999 Shin Takemura, All rights reserved.
 * Copyright (c) 1999-2001 SATO Kazumi, All rights reserved.
 *
 * 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.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 */

/*
 * Copyright (c) 1994, 1995 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.19 2022/03/03 06:27:03 riastradh Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/cpu.h>
#include <sys/bus.h>

#include <mips/locore.h>

#include <machine/sysconf.h>
#include <machine/autoconf.h>

/* Definition of the driver for autoconfig. */
static int	cpumatch(device_t, cfdata_t, void *);
static void	cpuattach(device_t, device_t, void *);

CFATTACH_DECL_NEW(cpu, 0,
    cpumatch, cpuattach, NULL, NULL);

extern struct cfdriver cpu_cd;

static int
cpumatch(device_t parent, cfdata_t cf, void *aux)
{
	struct mainbus_attach_args *ma = aux;

	/* make sure that we're looking for a CPU. */
	return (strcmp(ma->ma_name, cpu_cd.cd_name) != 0 ? 0 : 1);
}

static void
cpuattach(device_t parent, device_t self, void *aux)
{
	struct cpu_info * const ci = curcpu();

	ci->ci_dev = self;
	device_set_private(self, ci);

	aprint_normal(": ");

	cpu_identify(self);

	/* install CPU specific idle routine if any. */
	if (platform.cpu_idle != NULL)
		mips_locoresw.lsw_cpu_idle = platform.cpu_idle;
}