xref: /illumos-gate/usr/src/psm/promif/ieee1275/common/prom_stdout.c (revision bea83d026ee1bd1b2a2419e1d0232f107a5d7d9b)
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 }
72