1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * "PROM" interface
29 */
30
31 #include <sys/types.h>
32 #include <sys/promif.h>
33 #include <sys/salib.h>
34
35 #include <kmdb/kmdb_promif_impl.h>
36 #include <kmdb/kmdb_kdi.h>
37 #include <kmdb/kmdb_dpi.h>
38 #include <mdb/mdb_err.h>
39 #include <mdb/mdb_debug.h>
40 #include <mdb/mdb_string.h>
41 #include <mdb/mdb.h>
42
43 struct boot_syscalls *kmdb_sysp;
44
45 ssize_t
kmdb_prom_obp_writer(caddr_t buf,size_t len)46 kmdb_prom_obp_writer(caddr_t buf, size_t len)
47 {
48 int i;
49
50 for (i = 0; i < len; i++)
51 prom_putchar(*buf++);
52
53 return (len);
54 }
55
56 /*ARGSUSED*/
57 ihandle_t
kmdb_prom_get_handle(char * name)58 kmdb_prom_get_handle(char *name)
59 {
60 /* no handles here */
61 return (0);
62 }
63
64 char *
kmdb_prom_get_ddi_prop(kmdb_auxv_t * kav,char * propname)65 kmdb_prom_get_ddi_prop(kmdb_auxv_t *kav, char *propname)
66 {
67 int i;
68
69 if (kav->kav_pcache != NULL) {
70 for (i = 0; i < kav->kav_nprops; i++) {
71 kmdb_auxv_nv_t *nv = &kav->kav_pcache[i];
72 if (strcmp(nv->kanv_name, propname) == 0)
73 return (nv->kanv_val);
74 }
75 }
76
77 return (NULL);
78 }
79
80 /*ARGSUSED*/
81 void
kmdb_prom_free_ddi_prop(char * val)82 kmdb_prom_free_ddi_prop(char *val)
83 {
84 }
85
86 /*
87 * This function is actually about checking if we are using
88 * local console versus serial console. Serial console can be named
89 * "ttyX" where X is [a-d], or "usb-serial".
90 */
91 int
kmdb_prom_stdout_is_framebuffer(kmdb_auxv_t * kav)92 kmdb_prom_stdout_is_framebuffer(kmdb_auxv_t *kav)
93 {
94 char *dev;
95
96 /*
97 * The property "output-device" value is set in property cache, and
98 * is based on either "output-device" or "console" properties from
99 * the actual system. We can't use the official promif version, as we
100 * need to ensure that property lookups come from our property cache.
101 */
102
103 if ((dev = kmdb_prom_get_ddi_prop(kav, "output-device")) == NULL)
104 return (0);
105
106 if (strncmp(dev, "tty", 3) == 0)
107 return (0);
108 if (strcmp(dev, "usb-serial") == 0)
109 return (0);
110
111 /* Anything else is classified as local console. */
112 return (1);
113 }
114
115 void
kmdb_prom_get_tem_size(kmdb_auxv_t * kav,ushort_t * rows,ushort_t * cols)116 kmdb_prom_get_tem_size(kmdb_auxv_t *kav, ushort_t *rows, ushort_t *cols)
117 {
118 char *val;
119 unsigned long u;
120
121 val = kmdb_prom_get_ddi_prop(kav, "screen-#rows");
122 if (val != NULL) {
123 u = strtoul(val, NULL, 10);
124 *rows = (ushort_t)u;
125 }
126 val = kmdb_prom_get_ddi_prop(kav, "screen-#cols");
127 if (val != NULL) {
128 u = strtoul(val, NULL, 10);
129 *cols = (ushort_t)u;
130 }
131 }
132