1 /* $NetBSD: mainbus.c,v 1.32 1999/11/15 09:50:20 nisimura Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * DECstation port: Jonathan Stone 9 * 10 * Permission to use, copy, modify and distribute this software and 11 * its documentation is hereby granted, provided that both the copyright 12 * notice and this permission notice appear in all copies of the 13 * software, derivative works or modified versions, and any portions 14 * thereof, and that both notices appear in supporting documentation. 15 * 16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 19 * 20 * Carnegie Mellon requests users of this software to return to 21 * 22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 23 * School of Computer Science 24 * Carnegie Mellon University 25 * Pittsburgh PA 15213-3890 26 * 27 * any improvements or extensions that they make and grant Carnegie the 28 * rights to redistribute these changes. 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/device.h> 34 35 #include <machine/sysconf.h> 36 #include <machine/autoconf.h> 37 38 /* Definition of the mainbus driver. */ 39 static int mbmatch __P((struct device *, struct cfdata *, void *)); 40 static void mbattach __P((struct device *, struct device *, void *)); 41 static int mbprint __P((void *, const char *)); 42 43 struct cfattach mainbus_ca = { 44 sizeof(struct device), mbmatch, mbattach 45 }; 46 47 static int mainbus_found; 48 49 static int 50 mbmatch(parent, cf, aux) 51 struct device *parent; 52 struct cfdata *cf; 53 void *aux; 54 { 55 56 if (mainbus_found) 57 return (0); 58 59 return (1); 60 } 61 62 int ncpus = 0; /* only support uniprocessors, for now */ 63 64 static void 65 mbattach(parent, self, aux) 66 struct device *parent; 67 struct device *self; 68 void *aux; 69 { 70 struct mainbus_attach_args ma; 71 72 mainbus_found = 1; 73 74 printf("\n"); 75 76 /* 77 * if we ever support multi-processor DECsystem (5800 family), 78 * the Alpha port's mainbus.c has an example of attaching 79 * multiple CPUs. 80 * 81 * For now, we only have one. Attach it directly. 82 */ 83 ma.ma_name = "cpu"; 84 ma.ma_slot = 0; 85 config_found(self, &ma, mbprint); 86 87 ma.ma_name = platform.iobus; 88 ma.ma_slot = 0; 89 config_found(self, &ma, mbprint); 90 } 91 92 static int 93 mbprint(aux, pnp) 94 void *aux; 95 const char *pnp; 96 { 97 98 if (pnp) 99 return (QUIET); 100 return (UNCONF); 101 } 102