xref: /onnv-gate/usr/src/psm/promif/ieee1275/common/prom_stdin.c (revision 789:b348f31ed315)
10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * CDDL HEADER START
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
50Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
60Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
70Sstevel@tonic-gate  * with the License.
80Sstevel@tonic-gate  *
90Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
100Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
110Sstevel@tonic-gate  * See the License for the specific language governing permissions
120Sstevel@tonic-gate  * and limitations under the License.
130Sstevel@tonic-gate  *
140Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
150Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
160Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
170Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
180Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
190Sstevel@tonic-gate  *
200Sstevel@tonic-gate  * CDDL HEADER END
210Sstevel@tonic-gate  */
220Sstevel@tonic-gate /*
23*789Sahrens  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24*789Sahrens  * Use is subject to license terms.
250Sstevel@tonic-gate  */
260Sstevel@tonic-gate 
270Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
280Sstevel@tonic-gate 
290Sstevel@tonic-gate #include <sys/promif.h>
300Sstevel@tonic-gate #include <sys/promimpl.h>
310Sstevel@tonic-gate 
320Sstevel@tonic-gate /*
330Sstevel@tonic-gate  * Return ihandle of stdin
340Sstevel@tonic-gate  */
350Sstevel@tonic-gate ihandle_t
prom_stdin_ihandle(void)360Sstevel@tonic-gate prom_stdin_ihandle(void)
370Sstevel@tonic-gate {
380Sstevel@tonic-gate 	static ihandle_t istdin;
390Sstevel@tonic-gate 	static char *name = "stdin";
400Sstevel@tonic-gate 
410Sstevel@tonic-gate 	if (istdin)
420Sstevel@tonic-gate 		return (istdin);
430Sstevel@tonic-gate 
440Sstevel@tonic-gate 	if (prom_getproplen(prom_chosennode(), name) !=
450Sstevel@tonic-gate 	    sizeof (ihandle_t))  {
460Sstevel@tonic-gate #if defined(PROMIF_DEBUG) || defined(lint)
470Sstevel@tonic-gate 		prom_fatal_error("No stdout ihandle?");
480Sstevel@tonic-gate #endif
490Sstevel@tonic-gate 		return (istdin = (ihandle_t)-1);
500Sstevel@tonic-gate 	}
510Sstevel@tonic-gate 	(void) prom_getprop(prom_chosennode(), name,
520Sstevel@tonic-gate 	    (caddr_t)(&istdin));
530Sstevel@tonic-gate 	istdin = prom_decode_int(istdin);
540Sstevel@tonic-gate 	return (istdin);
550Sstevel@tonic-gate }
560Sstevel@tonic-gate 
570Sstevel@tonic-gate /*
580Sstevel@tonic-gate  * Return phandle of stdin
590Sstevel@tonic-gate  */
60*789Sahrens pnode_t
prom_stdin_node(void)610Sstevel@tonic-gate prom_stdin_node(void)
620Sstevel@tonic-gate {
630Sstevel@tonic-gate 	static phandle_t pstdin;
640Sstevel@tonic-gate 	ihandle_t istdin;
650Sstevel@tonic-gate 
660Sstevel@tonic-gate 	if (pstdin)
670Sstevel@tonic-gate 		return (pstdin);
680Sstevel@tonic-gate 
690Sstevel@tonic-gate 	if ((istdin = prom_stdin_ihandle()) == (ihandle_t)-1)
70*789Sahrens 		return (pstdin = (pnode_t)OBP_BADNODE);
710Sstevel@tonic-gate 
720Sstevel@tonic-gate 	return (pstdin = prom_getphandle(istdin));
730Sstevel@tonic-gate }
74