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
  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
  58 kmdb_prom_get_handle(char *name)
  59 {
  60         /* no handles here */
  61         return (0);
  62 }
  63 
  64 char *
  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
  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
  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
 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 }