usr/src/psm/promif/ieee1275/common/prom_stdout.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 /*
  33  * Return ihandle of stdout
  34  */
  35 ihandle_t
  36 prom_stdout_ihandle(void)
  37 {
  38         static ihandle_t istdout;
  39         static char *name = "stdout";
  40
  41         if (istdout)
  42                 return (istdout);
  43
  44         if (prom_getproplen(prom_chosennode(), name) !=
  45             sizeof (ihandle_t))  {
  46                 return (istdout = (ihandle_t)-1);
  47         }
  48         (void) prom_getprop(prom_chosennode(), name,
  49             (caddr_t)(&istdout));
  50         istdout = prom_decode_int(istdout);
  51         return (istdout);
  52
  53 }
  54
  55 /*
  56  * Return phandle of stdout
  57  */
  58 pnode_t
  59 prom_stdout_node(void)
  60 {
  61         static phandle_t pstdout;
  62         ihandle_t istdout;
  63
  64         if (pstdout)
  65                 return (pstdout);
  66
  67         if ((istdout = prom_stdout_ihandle()) == (ihandle_t)-1)
  68                 return (pstdout = (pnode_t)OBP_BADNODE);
  69
  70         return (pstdout = prom_getphandle(istdout));
  71 }