2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/boot/i386/libi386/bootinfo.c,v 1.35 2003/08/25 23:28:31 obrien Exp $
27 * $DragonFly: src/sys/boot/i386/libi386/Attic/bootinfo.c,v 1.3 2003/11/10 06:08:36 dillon Exp $
31 #include <sys/param.h>
32 #include <sys/reboot.h>
33 #include <sys/linker.h>
34 #include "bootstrap.h"
39 * Return a 'boothowto' value corresponding to the kernel arguments in
40 * (kargs) and any relevant environment variables.
47 {"boot_askname", RB_ASKNAME},
48 {"boot_cdrom", RB_CDROM},
49 {"boot_userconfig", RB_CONFIG},
52 {"boot_single", RB_SINGLE},
53 {"boot_verbose", RB_VERBOSE},
54 {"boot_multicons", RB_MULTIPLE},
55 {"boot_serial", RB_SERIAL},
60 bi_getboothowto(char *kargs)
73 if (!active && (*cp == '-')) {
105 howto |= RB_DFLTROOT;
120 /* get equivalents from the environment */
121 for (i = 0; howto_names[i].ev != NULL; i++)
122 if (getenv(howto_names[i].ev) != NULL)
123 howto |= howto_names[i].mask;
124 if (!strcmp(getenv("console"), "comconsole"))
126 if (!strcmp(getenv("console"), "nullconsole"))
132 * Copy the environment into the load area starting at (addr).
133 * Each variable is formatted as <name>=<value>, with a single nul
134 * separating each variable, and a double nul terminating the environment.
137 bi_copyenv(vm_offset_t addr)
141 /* traverse the environment */
142 for (ep = environ; ep != NULL; ep = ep->ev_next) {
143 i386_copyin(ep->ev_name, addr, strlen(ep->ev_name));
144 addr += strlen(ep->ev_name);
145 i386_copyin("=", addr, 1);
147 if (ep->ev_value != NULL) {
148 i386_copyin(ep->ev_value, addr, strlen(ep->ev_value));
149 addr += strlen(ep->ev_value);
151 i386_copyin("", addr, 1);
154 i386_copyin("", addr, 1);