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/boot.h> 34 #include <sys/linker.h> 35 #include "bootstrap.h" 36 #include "libi386.h" 37 #include "btxv86.h" 38 39 int 40 bi_getboothowto(char *kargs) 41 { 42 char *curpos, *next, *string; 43 int howto; 44 int vidconsole; 45 46 howto = boot_parse_cmdline(kargs); 47 howto |= boot_env_to_howto(); 48 49 /* Enable selected consoles */ 50 string = next = strdup(getenv("console")); 51 vidconsole = 0; 52 while (next != NULL) { 53 curpos = strsep(&next, " ,"); 54 if (*curpos == '\0') 55 continue; 56 if (!strcmp(curpos, "vidconsole")) 57 vidconsole = 1; 58 else if (!strcmp(curpos, "comconsole")) 59 howto |= RB_SERIAL; 60 else if (!strcmp(curpos, "nullconsole")) 61 howto |= RB_MUTE; 62 } 63 64 if (vidconsole && (howto & RB_SERIAL)) 65 howto |= RB_MULTIPLE; 66 67 /* 68 * XXX: Note that until the kernel is ready to respect multiple consoles 69 * for the boot messages, the first named console is the primary console 70 */ 71 if (!strcmp(string, "vidconsole")) 72 howto &= ~RB_SERIAL; 73 74 free(string); 75 76 return(howto); 77 } 78 79 void 80 bi_setboothowto(int howto) 81 { 82 83 boot_howto_to_env(howto); 84 } 85 86 /* 87 * Copy the environment into the load area starting at (addr). 88 * Each variable is formatted as <name>=<value>, with a single nul 89 * separating each variable, and a double nul terminating the environment. 90 */ 91 vm_offset_t 92 bi_copyenv(vm_offset_t addr) 93 { 94 struct env_var *ep; 95 96 /* traverse the environment */ 97 for (ep = environ; ep != NULL; ep = ep->ev_next) { 98 i386_copyin(ep->ev_name, addr, strlen(ep->ev_name)); 99 addr += strlen(ep->ev_name); 100 i386_copyin("=", addr, 1); 101 addr++; 102 if (ep->ev_value != NULL) { 103 i386_copyin(ep->ev_value, addr, strlen(ep->ev_value)); 104 addr += strlen(ep->ev_value); 105 } 106 i386_copyin("", addr, 1); 107 addr++; 108 } 109 i386_copyin("", addr, 1); 110 addr++; 111 return(addr); 112 } 113