xref: /titanic_52/usr/src/uts/intel/ia32/promif/prom_exit.c (revision b819cea2f73f98c5662230cc9affc8cc84f77fcf)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 #include <sys/promif.h>
29 #include <sys/consdev.h>
30 #include <sys/promimpl.h>
31 #include <sys/archsystm.h>
32 #include <sys/reboot.h>
33 #include <sys/kdi.h>
34 
35 /*
36  * The Intel cpu does not have an underlying monitor.
37  * So, we do the best we can.....
38  */
39 
40 extern void prom_poll_enter(void);
41 
42 extern cons_polledio_t *cons_polledio;
43 
44 void
45 prom_exit_to_mon(void)
46 {
47 
48 #if !defined(_KMDB)
49 	prom_poll_enter();
50 #endif
51 #ifdef I386BOOT
52 	prom_printf("[spinning forever]\n");
53 	for (;;)
54 		continue;
55 #else
56 #if !defined(_KMDB)
57 	if (boothowto & RB_DEBUG)
58 		kmdb_enter();
59 #endif	/* !_KMDB */
60 	prom_reboot_prompt();
61 	prom_reboot(NULL);
62 #endif	/* !I386BOOT */
63 }
64 
65 #if !defined(_KMDB)
66 void
67 prom_poll_enter(void)
68 {
69 	if (cons_polledio != NULL) {
70 		if (cons_polledio->cons_polledio_enter != NULL) {
71 			cons_polledio->cons_polledio_enter(
72 			    cons_polledio->cons_polledio_argument);
73 		}
74 	}
75 }
76 #endif
77