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 /* 23 * Copyright 2007 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 * This function is installed for both pre and post output during cpr to keep 34 * the early stages of the resuming kernel from accessing outside the nucleus 35 * mapping; we assert that the console is all powered up before it is installed 36 */ 37 static void 38 null_outfunc(void) 39 { 40 } 41 42 static promif_owrap_t nullwrapper = 43 { 44 null_outfunc, 45 null_outfunc 46 }; 47 48 static promif_owrap_t *wrapper = &nullwrapper; 49 static promif_owrap_t pmwrapper; 50 static promif_owrap_t *saved_wrapper; 51 52 promif_owrap_t 53 *promif_preout(void) 54 { 55 promif_owrap_t *ow = wrapper; 56 (ow->preout)(); 57 return (ow); 58 } 59 60 void 61 promif_postout(promif_owrap_t *ow) 62 { 63 (ow->postout)(); 64 } 65 66 void 67 prom_set_outfuncs(void (*pref)(void), void (*postf)(void)) 68 { 69 pmwrapper.preout = pref; 70 pmwrapper.postout = postf; 71 wrapper = &pmwrapper; 72 } 73 74 void 75 prom_suspend_prepost(void) 76 { 77 saved_wrapper = wrapper; 78 wrapper = &nullwrapper; 79 } 80 81 void 82 prom_resume_prepost(void) 83 { 84 wrapper = saved_wrapper; 85 saved_wrapper = NULL; 86 } 87