1 /* $NetBSD: consinit.c,v 1.4 2021/03/29 13:14:13 rin Exp $ */
2
3 /*
4 * Copyright (c) 2006 Jachym Holecek
5 * All rights reserved.
6 *
7 * Written for DFC Design, s.r.o.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "opt_cons.h"
33 #include "xlcom.h"
34
35 #include <sys/cdefs.h>
36 __KERNEL_RCSID(0, "$NetBSD: consinit.c,v 1.4 2021/03/29 13:14:13 rin Exp $");
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/device.h>
41
42 #include <sys/bus.h>
43
44 #include <evbppc/virtex/virtex.h>
45
46 #include <dev/cons.h>
47
48
49 #if NXLCOM > 0
50 extern struct consdev consdev_xlcom;
51 void xlcom_cninit(struct consdev *, bus_addr_t);
52 #if defined(KGDB)
53 void xlcom_kgdbinit(void);
54 #endif
55 #endif
56
57 bus_space_tag_t consdev_iot;
58 bus_space_handle_t consdev_ioh;
59
60 #if defined(KGDB)
61 bus_space_tag_t kgdb_iot;
62 bus_space_handle_t kgdb_ioh;
63 #endif
64
65
66 /*
67 * Initialize the system console (hmm, as if anyone can see those panics).
68 */
69 void
consinit(void)70 consinit(void)
71 {
72 static int initted = 0;
73
74 if (initted)
75 return;
76
77 /* Pick MD knowledge about console. */
78 if (virtex_bus_space_tag(CONS_NAME, &consdev_iot))
79 panic("No bus space for %s console", CONS_NAME);
80
81 #if defined(KGDB)
82 if (virtex_bus_space_tag(KGDB_NAME, &kgdb_iot))
83 panic("No bus space for %s kgdb", KGDB_NAME);
84 #endif
85
86 #if NXLCOM > 0
87 #if defined(KGDB)
88 if (strncmp("xlcom", KGDB_NAME, 5)) {
89 xlcom_kgdbinit();
90
91 /* Overtake console device, we're higher priority. */
92 if (strcmp(KGDB_NAME, CONS_NAME) == 0 &&
93 KGDB_ADDR == CONS_ADDR)
94 goto done;
95 }
96 #endif
97 if (strncmp("xlcom", CONS_NAME, 5) == 0) {
98 cn_tab = &consdev_xlcom;
99 xlcom_cninit(cn_tab, CONS_ADDR);
100
101 goto done;
102 }
103 #endif
104
105 panic("No console"); /* XXX really panic? */
106 done:
107 /* If kgdb overtook console, cn_tab is NULL and dev/cons.c deals. */
108 initted = 1;
109 }
110