1/*	$NetBSD: mainbus.c,v 1.9 2021/08/07 16:18:52 thorpej Exp $	*/
2
3/*
4 * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *      This product includes software developed by Christopher G. Demetriou
17 *	for the NetBSD Project.
18 * 4. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.9 2021/08/07 16:18:52 thorpej Exp $");
35
36#include "mainbus.h"
37#include "opt_multiprocessor.h"
38
39#include <sys/param.h>
40#include <sys/bus.h>
41#include <sys/device.h>
42#include <sys/errno.h>
43
44#include <evbppc/ev64260/ev64260.h>
45
46#include "locators.h"
47
48#if NCPU == 0
49#error	A cpu device is now required
50#endif
51
52
53int	mainbus_match(device_t, cfdata_t, void *);
54void	mainbus_attach(device_t, device_t, void *);
55int	mainbus_cfprint(void *, const char *);
56
57CFATTACH_DECL_NEW(mainbus, 0,
58	mainbus_match, mainbus_attach, NULL, NULL);
59
60/*
61 * Probe for the mainbus; always succeeds.
62 */
63int
64mainbus_match(device_t parent, cfdata_t match, void *aux)
65{
66
67	return 1;
68}
69
70/*
71 * Attach the mainbus.
72 */
73void
74mainbus_attach(device_t parent, device_t self, void *aux)
75{
76	struct mainbus_attach_args mba;
77	extern bus_addr_t gt_base;
78
79	printf("\n");
80
81	memset(&mba, 0, sizeof(mba));
82
83	/*
84	 * Always find the CPU
85	 */
86	mba.mba_name = "cpu";
87	mba.mba_unit = 0;
88	mba.mba_addr = MAINBUSCF_ADDR_DEFAULT;
89	config_found(self, &mba, mainbus_cfprint, CFARGS_NONE);
90
91#ifdef MULTIPROCESSOR
92	/*
93	 * Try for a second one...
94	 */
95	mba.mba_name = "cpu";
96	mba.mba_unit = 1;
97	mba.mba_addr = MAINBUSCF_ADDR_DEFAULT;
98	config_found(self, &mba, mainbus_cfprint, CFARGS_NONE);
99#endif
100
101	/*
102	 * Now try to configure the Discovery
103	 */
104	mba.mba_name = "gt";
105	mba.mba_unit = -1;
106	mba.mba_addr = gt_base;
107	config_found(self, &mba, mainbus_cfprint, CFARGS_NONE);
108}
109
110int
111mainbus_cfprint(void *aux, const char *pnp)
112{
113	struct mainbus_attach_args *mba = aux;
114
115	if (pnp)
116		aprint_normal("%s at %s", mba->mba_name, pnp);
117	if (mba->mba_unit != -1)
118		aprint_normal(" unit %d", mba->mba_unit);
119	if (mba->mba_addr != MAINBUSCF_ADDR_DEFAULT)
120		aprint_normal(" addr 0x%08x", mba->mba_addr);
121	return UNCONF;
122}
123
124
125static int	cpu_match(device_t, cfdata_t, void *);
126static void	cpu_attach(device_t, device_t, void *);
127
128CFATTACH_DECL_NEW(cpu, 0, cpu_match, cpu_attach, NULL, NULL);
129
130int
131cpu_match(device_t parent, cfdata_t cf, void *aux)
132{
133	struct mainbus_attach_args *mba = aux;
134
135	if (strcmp(mba->mba_name, "cpu") != 0)
136		return 0;
137
138	return 1;
139}
140
141void
142cpu_attach(device_t parent, device_t self, void *aux)
143{
144	struct mainbus_attach_args *mba = aux;
145
146	(void) cpu_attach_common(self, mba->mba_unit);
147}
148