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 __FBSDID("$FreeBSD$"); 29 30 #include <stand.h> 31 #include <sys/param.h> 32 #include <sys/reboot.h> 33 #include <sys/linker.h> 34 35 #include "bootstrap.h" 36 #include "libuserboot.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 vidconsole; 46 47 /* Parse kargs */ 48 howto = 0; 49 if (kargs != NULL) { 50 cp = kargs; 51 active = 0; 52 while (*cp != 0) { 53 if (!active && (*cp == '-')) { 54 active = 1; 55 } else if (active) 56 switch (*cp) { 57 case 'a': 58 howto |= RB_ASKNAME; 59 break; 60 case 'C': 61 howto |= RB_CDROM; 62 break; 63 case 'd': 64 howto |= RB_KDB; 65 break; 66 case 'D': 67 howto |= RB_MULTIPLE; 68 break; 69 case 'm': 70 howto |= RB_MUTE; 71 break; 72 case 'g': 73 howto |= RB_GDB; 74 break; 75 case 'h': 76 howto |= RB_SERIAL; 77 break; 78 case 'p': 79 howto |= RB_PAUSE; 80 break; 81 case 'r': 82 howto |= RB_DFLTROOT; 83 break; 84 case 's': 85 howto |= RB_SINGLE; 86 break; 87 case 'v': 88 howto |= RB_VERBOSE; 89 break; 90 default: 91 active = 0; 92 break; 93 } 94 cp++; 95 } 96 } 97 98 howto |= bootenv_flags(); 99 100 /* Enable selected consoles */ 101 string = next = strdup(getenv("console")); 102 vidconsole = 0; 103 while (next != NULL) { 104 curpos = strsep(&next, " ,"); 105 if (*curpos == '\0') 106 continue; 107 if (!strcmp(curpos, "vidconsole")) 108 vidconsole = 1; 109 else if (!strcmp(curpos, "comconsole")) 110 howto |= RB_SERIAL; 111 else if (!strcmp(curpos, "nullconsole")) 112 howto |= RB_MUTE; 113 } 114 115 if (vidconsole && (howto & RB_SERIAL)) 116 howto |= RB_MULTIPLE; 117 118 /* 119 * XXX: Note that until the kernel is ready to respect multiple consoles 120 * for the boot messages, the first named console is the primary console 121 */ 122 if (!strcmp(string, "vidconsole")) 123 howto &= ~RB_SERIAL; 124 125 free(string); 126 127 return(howto); 128 } 129 130 void 131 bi_setboothowto(int howto) 132 { 133 134 bootenv_set(howto); 135 } 136 137 /* 138 * Copy the environment into the load area starting at (addr). 139 * Each variable is formatted as <name>=<value>, with a single nul 140 * separating each variable, and a double nul terminating the environment. 141 */ 142 vm_offset_t 143 bi_copyenv(vm_offset_t addr) 144 { 145 struct env_var *ep; 146 147 /* traverse the environment */ 148 for (ep = environ; ep != NULL; ep = ep->ev_next) { 149 CALLBACK(copyin, ep->ev_name, addr, strlen(ep->ev_name)); 150 addr += strlen(ep->ev_name); 151 CALLBACK(copyin, "=", addr, 1); 152 addr++; 153 if (ep->ev_value != NULL) { 154 CALLBACK(copyin, ep->ev_value, addr, strlen(ep->ev_value)); 155 addr += strlen(ep->ev_value); 156 } 157 CALLBACK(copyin, "", addr, 1); 158 addr++; 159 } 160 CALLBACK(copyin, "", addr, 1); 161 addr++; 162 return(addr); 163 } 164