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      1 /* $NetBSD: mainbus.c,v 1.7 2021/08/07 16:18:51 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright 2002 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Simon Burge for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed for the NetBSD Project by
     20  *      Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #include <sys/cdefs.h>
     39 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.7 2021/08/07 16:18:51 thorpej Exp $");
     40 
     41 #include <sys/param.h>
     42 #include <sys/systm.h>
     43 #include <sys/device.h>
     44 
     45 #include <mips/cache.h>
     46 #include <mips/cpuregs.h>
     47 
     48 #include "locators.h"
     49 
     50 static int	mainbus_match(device_t, cfdata_t, void *);
     51 static void	mainbus_attach(device_t, device_t, void *);
     52 static int	mainbus_print(void *, const char *);
     53 
     54 CFATTACH_DECL_NEW(mainbus, 0,
     55     mainbus_match, mainbus_attach, NULL, NULL);
     56 
     57 /* There can be only one. */
     58 int	mainbus_found;
     59 
     60 struct mainbusdev {
     61 	const char *md_name;
     62 };
     63 
     64 struct mainbusdev mainbusdevs[] = {
     65 	{ "cpu",	},
     66 	{ "wdog",	},
     67 	{ "arbus",	},
     68 	{ NULL,		}
     69 };
     70 
     71 static int
     72 mainbus_match(device_t parent, cfdata_t match, void *aux)
     73 {
     74 
     75 	if (mainbus_found)
     76 		return (0);
     77 
     78 	return (1);
     79 }
     80 
     81 static void
     82 mainbus_attach(device_t parent, device_t self, void *aux)
     83 {
     84 	const struct mainbusdev *md;
     85 
     86 	mainbus_found = 1;
     87 	printf("\n");
     88 
     89 	for (md = mainbusdevs; md->md_name != NULL; md++) {
     90 		struct mainbusdev ma = *md;
     91 		config_found(self, &ma, mainbus_print, CFARGS_NONE);
     92 	}
     93 }
     94 
     95 static int
     96 mainbus_print(void *aux, const char *pnp)
     97 {
     98 
     99 	return (QUIET);
    100 }
    101