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