xref: /titanic_52/usr/src/uts/intel/ia32/promif/prom_exit.c (revision 03831d35f7499c87d51205817c93e9a8d42c4bae)
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 2004 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/consdev.h>
31 #include <sys/promimpl.h>
32 #include <sys/archsystm.h>
33 #include <sys/reboot.h>
34 #include <sys/kdi.h>
35 
36 /*
37  * The Intel cpu does not have an underlying monitor.
38  * So, we do the best we can.....
39  */
40 
41 extern void prom_poll_enter(void);
42 
43 extern cons_polledio_t *cons_polledio;
44 
45 void
46 prom_exit_to_mon(void)
47 {
48 
49 #if !defined(_KMDB)
50 	prom_poll_enter();
51 #endif
52 #ifdef I386BOOT
53 	prom_printf("[spinning forever]\n");
54 	for (;;)
55 		continue;
56 #else
57 #if !defined(_KMDB)
58 	if (boothowto & RB_DEBUG)
59 		kdi_dvec_enter();
60 #endif	/* !_KMDB */
61 	prom_reboot_prompt();
62 	prom_reboot(NULL);
63 #endif	/* !I386BOOT */
64 }
65 
66 #if !defined(_KMDB)
67 void
68 prom_poll_enter(void)
69 {
70 	if (cons_polledio != NULL) {
71 		if (cons_polledio->cons_polledio_enter != NULL) {
72 			cons_polledio->cons_polledio_enter(
73 			    cons_polledio->cons_polledio_argument);
74 		}
75 	}
76 }
77 #endif
78