arch/x86/kernel/promif/prom_enter.c

   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/promimpl.h>
  30 #include <sys/archsystm.h>
  31 #include <sys/reboot.h>
  32 #include <sys/kdi.h>
  33
  34 /*
  35  * The Intel cpu does not have an underlying monitor.
  36  * So, we emulate the best we can.....
  37  */
  38
  39 void
  40 prom_enter_mon(void)
  41 {
  42 #if defined(I386BOOT)
  43         return;
  44 #endif
  45
  46 #if defined(_KMDB)
  47         prom_exit_to_mon();
  48 #endif
  49
  50         if (boothowto & RB_DEBUG)
  51                 kmdb_enter();
  52         else {
  53                 prom_printf("Press any key to continue.");
  54                 (void) prom_getchar();
  55         }
  56 }