usr/src/psm/promif/ieee1275/common/prom_boot.c

   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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/promif.h>
  30 #include <sys/promimpl.h>
  31
  32 char *
  33 prom_bootargs(void)
  34 {
  35         int length;
  36         pnode_t node;
  37         static char *name = "bootargs";
  38         static char bootargs[OBP_MAXPATHLEN];
  39
  40         if (bootargs[0] != '\0')
  41                 return (bootargs);
  42
  43         node = prom_chosennode();
  44         if ((node == OBP_NONODE) || (node == OBP_BADNODE))
  45                 node = prom_rootnode();
  46         length = prom_getproplen(node, name);
  47         if ((length == -1) || (length == 0))
  48                 return (NULL);
  49         if (length > OBP_MAXPATHLEN)
  50                 length = OBP_MAXPATHLEN - 1;    /* Null terminator */
  51         (void) prom_bounded_getprop(node, name, bootargs, length);
  52         return (bootargs);
  53 }
  54
  55
  56 struct bootparam *
  57 prom_bootparam(void)
  58 {
  59         PROMIF_DPRINTF(("prom_bootparam on P1275?\n"));
  60         return (NULL);
  61 }
  62
  63 char *
  64 prom_bootpath(void)
  65 {
  66         static char bootpath[OBP_MAXPATHLEN];
  67         int length;
  68         pnode_t node;
  69         static char *name = "bootpath";
  70
  71         if (bootpath[0] != '\0')
  72                 return (bootpath);
  73
  74         node = prom_chosennode();
  75         if ((node == OBP_NONODE) || (node == OBP_BADNODE))
  76                 node = prom_rootnode();
  77         length = prom_getproplen(node, name);
  78         if ((length == -1) || (length == 0))
  79                 return (NULL);
  80         if (length > OBP_MAXPATHLEN)
  81                 length = OBP_MAXPATHLEN - 1;    /* Null terminator */
  82         (void) prom_bounded_getprop(node, name, bootpath, length);
  83         return (bootpath);
  84 }