1 /*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 29 #include <stand.h> 30 #include <sys/param.h> 31 #include <sys/reboot.h> 32 #include <sys/linker.h> 33 #include <sys/boot.h> 34 #include "bootstrap.h" 35 #include "libi386.h" 36 #include "btxv86.h" 37 38 int 39 bi_getboothowto(char *kargs) 40 { 41 char *cp; 42 char *curpos, *next, *string; 43 int howto; 44 int active; 45 int i; 46 int vidconsole; 47 48 /* Parse kargs */ 49 howto = 0; 50 if (kargs != NULL) { 51 cp = kargs; 52 active = 0; 53 while (*cp != 0) { 54 if (!active && (*cp == '-')) { 55 active = 1; 56 } else if (active) 57 switch (*cp) { 58 case 'a': 59 howto |= RB_ASKNAME; 60 break; 61 case 'C': 62 howto |= RB_CDROM; 63 break; 64 case 'd': 65 howto |= RB_KDB; 66 break; 67 case 'D': 68 howto |= RB_MULTIPLE; 69 break; 70 case 'm': 71 howto |= RB_MUTE; 72 break; 73 case 'g': 74 howto |= RB_GDB; 75 break; 76 case 'h': 77 howto |= RB_SERIAL; 78 break; 79 case 'p': 80 howto |= RB_PAUSE; 81 break; 82 case 'r': 83 howto |= RB_DFLTROOT; 84 break; 85 case 's': 86 howto |= RB_SINGLE; 87 break; 88 case 'v': 89 howto |= RB_VERBOSE; 90 break; 91 default: 92 active = 0; 93 break; 94 } 95 cp++; 96 } 97 } 98 /* get equivalents from the environment */ 99 for (i = 0; howto_names[i].ev != NULL; i++) 100 if (getenv(howto_names[i].ev) != NULL) 101 howto |= howto_names[i].mask; 102 103 /* Enable selected consoles */ 104 string = next = strdup(getenv("console")); 105 vidconsole = 0; 106 while (next != NULL) { 107 curpos = strsep(&next, " ,"); 108 if (*curpos == '\0') 109 continue; 110 if (!strcmp(curpos, "text")) 111 vidconsole = 1; 112 else if (!strcmp(curpos, "ttya")) 113 howto |= RB_SERIAL; 114 else if (!strcmp(curpos, "ttyb")) 115 howto |= RB_SERIAL; 116 else if (!strcmp(curpos, "ttyc")) 117 howto |= RB_SERIAL; 118 else if (!strcmp(curpos, "ttyd")) 119 howto |= RB_SERIAL; 120 else if (!strcmp(curpos, "null")) 121 howto |= RB_MUTE; 122 } 123 124 if (vidconsole && (howto & RB_SERIAL)) 125 howto |= RB_MULTIPLE; 126 127 /* 128 * XXX: Note that until the kernel is ready to respect multiple consoles 129 * for the boot messages, the first named console is the primary console 130 */ 131 if (!strcmp(string, "text")) 132 howto &= ~RB_SERIAL; 133 134 free(string); 135 136 return(howto); 137 } 138 139 void 140 bi_setboothowto(int howto) 141 { 142 int i; 143 144 for (i = 0; howto_names[i].ev != NULL; i++) 145 if (howto & howto_names[i].mask) 146 setenv(howto_names[i].ev, "YES", 1); 147 } 148 149 /* 150 * Copy the environment into the load area starting at (addr). 151 * Each variable is formatted as <name>=<value>, with a single nul 152 * separating each variable, and a double nul terminating the environment. 153 */ 154 vm_offset_t 155 bi_copyenv(vm_offset_t addr) 156 { 157 struct env_var *ep; 158 159 /* traverse the environment */ 160 for (ep = environ; ep != NULL; ep = ep->ev_next) { 161 i386_copyin(ep->ev_name, addr, strlen(ep->ev_name)); 162 addr += strlen(ep->ev_name); 163 i386_copyin("=", addr, 1); 164 addr++; 165 if (ep->ev_value != NULL) { 166 i386_copyin(ep->ev_value, addr, strlen(ep->ev_value)); 167 addr += strlen(ep->ev_value); 168 } 169 i386_copyin("", addr, 1); 170 addr++; 171 } 172 i386_copyin("", addr, 1); 173 addr++; 174 return(addr); 175 } 176