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
53 int mainbus_match(device_t, cfdata_t, void *);
54 void mainbus_attach(device_t, device_t, void *);
55 int mainbus_cfprint(void *, const char *);
56
57 CFATTACH_DECL_NEW(mainbus, 0,
58 mainbus_match, mainbus_attach, NULL, NULL);
59
60 /*
61 * Probe for the mainbus; always succeeds.
62 */
63 int
mainbus_match(device_t parent,cfdata_t match,void * aux)64 mainbus_match(device_t parent, cfdata_t match, void *aux)
65 {
66
67 return 1;
68 }
69
70 /*
71 * Attach the mainbus.
72 */
73 void
mainbus_attach(device_t parent,device_t self,void * aux)74 mainbus_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
110 int
mainbus_cfprint(void * aux,const char * pnp)111 mainbus_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
125 static int cpu_match(device_t, cfdata_t, void *);
126 static void cpu_attach(device_t, device_t, void *);
127
128 CFATTACH_DECL_NEW(cpu, 0, cpu_match, cpu_attach, NULL, NULL);
129
130 int
cpu_match(device_t parent,cfdata_t cf,void * aux)131 cpu_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
141 void
cpu_attach(device_t parent,device_t self,void * aux)142 cpu_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