1 /* $NetBSD: bootconfig.c,v 1.2 2002/03/10 19:56:39 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1994-1998 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * This code is derived from software written for Brini by Mark Brinicombe 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Mark Brinicombe 21 * for the NetBSD Project. 22 * 4. The name of the company nor the name of the author may be used to 23 * endorse or promote products derived from this software without specific 24 * prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 28 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 29 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 30 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 32 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/param.h> 40 41 __KERNEL_RCSID(0, "$NetBSD: bootconfig.c,v 1.2 2002/03/10 19:56:39 lukem Exp $"); 42 43 #include <sys/systm.h> 44 45 #include <machine/bootconfig.h> 46 47 #include "opt_md.h" 48 #include "opt_pmap_debug.h" 49 #include "md.h" 50 51 /* 52 * Function to identify and process different types of boot argument 53 */ 54 55 int 56 get_bootconf_option(opts, opt, type, result) 57 char *opts; 58 char *opt; 59 int type; 60 void *result; 61 { 62 char *ptr; 63 char *optstart; 64 int not; 65 66 ptr = opts; 67 68 while (*ptr) { 69 /* Find start of option */ 70 while (*ptr == ' ' || *ptr == '\t') 71 ++ptr; 72 73 if (*ptr == 0) 74 break; 75 76 not = 0; 77 78 /* Is it a negate option */ 79 if ((type & BOOTOPT_TYPE_MASK) == BOOTOPT_TYPE_BOOLEAN && *ptr == '!') { 80 not = 1; 81 ++ptr; 82 } 83 84 /* Find the end of option */ 85 optstart = ptr; 86 while (*ptr != 0 && *ptr != ' ' && *ptr != '\t' && *ptr != '=') 87 ++ptr; 88 89 if ((*ptr == '=') 90 || (*ptr != '=' && ((type & BOOTOPT_TYPE_MASK) == BOOTOPT_TYPE_BOOLEAN))) { 91 /* compare the option */ 92 if (strncmp(optstart, opt, (ptr - optstart)) == 0) { 93 /* found */ 94 95 if (*ptr == '=') 96 ++ptr; 97 98 switch(type & BOOTOPT_TYPE_MASK) { 99 case BOOTOPT_TYPE_BOOLEAN : 100 if (*(ptr - 1) == '=') 101 *((int *)result) = ((u_int)strtoul(ptr, NULL, 10) != 0); 102 else 103 *((int *)result) = !not; 104 break; 105 case BOOTOPT_TYPE_STRING : 106 *((char **)result) = ptr; 107 break; 108 case BOOTOPT_TYPE_INT : 109 *((int *)result) = (u_int)strtoul(ptr, NULL, 10); 110 break; 111 case BOOTOPT_TYPE_BININT : 112 *((int *)result) = (u_int)strtoul(ptr, NULL, 2); 113 break; 114 case BOOTOPT_TYPE_HEXINT : 115 *((int *)result) = (u_int)strtoul(ptr, NULL, 16); 116 break; 117 default: 118 return(0); 119 } 120 return(1); 121 } 122 } 123 /* skip to next option */ 124 while (*ptr != ' ' && *ptr != '\t' && *ptr != 0) 125 ++ptr; 126 } 127 return(0); 128 } 129