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      1 /*	$NetBSD: mainbus.c,v 1.7 2021/08/07 16:18:53 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001, 2004, 2005 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.7 2021/08/07 16:18:53 thorpej Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/systm.h>
     34 #include <sys/device.h>
     35 
     36 #include <machine/autoconf.h>
     37 #include <machine/sbdvar.h>
     38 
     39 static int mainbus_match(device_t, cfdata_t, void *);
     40 static void mainbus_attach(device_t, device_t, void *);
     41 static int mainbus_print(void *, const char *);
     42 
     43 CFATTACH_DECL_NEW(mainbus, 0,
     44     mainbus_match, mainbus_attach, NULL, NULL);
     45 
     46 static int mainbus_found;
     47 
     48 int
     49 mainbus_match(device_t parent, cfdata_t cf, void *aux)
     50 {
     51 
     52 	if (mainbus_found == 1)
     53 		return 0;
     54 
     55 	return 1;
     56 }
     57 
     58 void
     59 mainbus_attach(device_t parent, device_t self, void *aux)
     60 {
     61 	struct mainbus_attach_args ma;
     62 	const char * const *p;
     63 
     64 	mainbus_found = 1;
     65 	aprint_normal("\n");
     66 
     67 	/* CPU  */
     68 	ma.ma_name = "cpu";
     69 	config_found(self, &ma, mainbus_print, CFARGS_NONE);
     70 
     71 	/* System Board dependent device busses */
     72 	if (platform.mainbusdevs != NULL) {
     73 		for (p = platform.mainbusdevs; *p != NULL; p++) {
     74 			ma.ma_name = *p;
     75 			config_found(self, &ma, mainbus_print, CFARGS_NONE);
     76 		}
     77 	}
     78 }
     79 
     80 int
     81 mainbus_print(void *aux, const char *pnp)
     82 {
     83 
     84 	return pnp ? QUIET : UNCONF;
     85 }
     86