1/* $NetBSD: mainbus.c,v 1.5 2021/08/07 16:18:48 thorpej 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/cdefs.h> 32__KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.5 2021/08/07 16:18:48 thorpej Exp $"); 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/device.h> 37 38#include <machine/sysconf.h> 39#include <machine/autoconf.h> 40 41/* Definition of the mainbus driver. */ 42static int mbmatch(device_t, cfdata_t, void *); 43static void mbattach(device_t, device_t, void *); 44static int mbprint(void *, const char *); 45 46CFATTACH_DECL_NEW(mainbus, 0, 47 mbmatch, mbattach, NULL, NULL); 48 49static int mainbus_found; 50 51static int 52mbmatch(device_t parent, cfdata_t cf, void *aux) 53{ 54 55 if (mainbus_found) 56 return (0); 57 58 return (1); 59} 60 61int ncpus = 0; /* only support uniprocessors, for now */ 62 63static void 64mbattach(device_t parent, device_t self, void *aux) 65{ 66 struct mainbus_attach_args ma; 67 68 mainbus_found = 1; 69 70 printf("\n"); 71 72 ma.ma_name = "cpu"; 73 ma.ma_slot = 0; 74 config_found(self, &ma, mbprint, CFARGS_NONE); 75 76 ma.ma_name = platform.iobus; 77 ma.ma_slot = 0; 78 config_found(self, &ma, mbprint, CFARGS_NONE); 79} 80 81static int 82mbprint(void *aux, const char *pnp) 83{ 84 85 if (pnp) 86 return (QUIET); 87 return (UNCONF); 88} 89