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 stdin
34  */
35 ihandle_t
prom_stdin_ihandle(void)36 prom_stdin_ihandle(void)
37 {
38 	static ihandle_t istdin;
39 	static char *name = "stdin";
40 
41 	if (istdin)
42 		return (istdin);
43 
44 	if (prom_getproplen(prom_chosennode(), name) !=
45 	    sizeof (ihandle_t))  {
46 #if defined(PROMIF_DEBUG) || defined(lint)
47 		prom_fatal_error("No stdout ihandle?");
48 #endif
49 		return (istdin = (ihandle_t)-1);
50 	}
51 	(void) prom_getprop(prom_chosennode(), name,
52 	    (caddr_t)(&istdin));
53 	istdin = prom_decode_int(istdin);
54 	return (istdin);
55 }
56 
57 /*
58  * Return phandle of stdin
59  */
60 pnode_t
prom_stdin_node(void)61 prom_stdin_node(void)
62 {
63 	static phandle_t pstdin;
64 	ihandle_t istdin;
65 
66 	if (pstdin)
67 		return (pstdin);
68 
69 	if ((istdin = prom_stdin_ihandle()) == (ihandle_t)-1)
70 		return (pstdin = (pnode_t)OBP_BADNODE);
71 
72 	return (pstdin = prom_getphandle(istdin));
73 }
74