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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/reboot.h>
33 #include <sys/linker.h>
35 #include "bootstrap.h"
36 #include "libuserboot.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},
50 {"boot_dfltroot", RB_DFLTROOT},
52 {"boot_multicons", RB_MULTIPLE},
53 {"boot_mute", RB_MUTE},
54 {"boot_pause", RB_PAUSE},
55 {"boot_serial", RB_SERIAL},
56 {"boot_single", RB_SINGLE},
57 {"boot_verbose", RB_VERBOSE},
62 bi_getboothowto(char *kargs)
65 char *curpos, *next, *string;
77 if (!active && (*cp == '-')) {
106 howto |= RB_DFLTROOT;
121 /* get equivalents from the environment */
122 for (i = 0; howto_names[i].ev != NULL; i++)
123 if (getenv(howto_names[i].ev) != NULL)
124 howto |= howto_names[i].mask;
126 /* Enable selected consoles */
127 string = next = strdup(getenv("console"));
129 while (next != NULL) {
130 curpos = strsep(&next, " ,");
133 if (!strcmp(curpos, "vidconsole"))
135 else if (!strcmp(curpos, "comconsole"))
137 else if (!strcmp(curpos, "nullconsole"))
141 if (vidconsole && (howto & RB_SERIAL))
142 howto |= RB_MULTIPLE;
145 * XXX: Note that until the kernel is ready to respect multiple consoles
146 * for the boot messages, the first named console is the primary console
148 if (!strcmp(string, "vidconsole"))
157 bi_setboothowto(int howto)
161 for (i = 0; howto_names[i].ev != NULL; i++)
162 if (howto & howto_names[i].mask)
163 setenv(howto_names[i].ev, "YES", 1);
167 * Copy the environment into the load area starting at (addr).
168 * Each variable is formatted as <name>=<value>, with a single nul
169 * separating each variable, and a double nul terminating the environment.
172 bi_copyenv(vm_offset_t addr)
176 /* traverse the environment */
177 for (ep = environ; ep != NULL; ep = ep->ev_next) {
178 CALLBACK(copyin, ep->ev_name, addr, strlen(ep->ev_name));
179 addr += strlen(ep->ev_name);
180 CALLBACK(copyin, "=", addr, 1);
182 if (ep->ev_value != NULL) {
183 CALLBACK(copyin, ep->ev_value, addr, strlen(ep->ev_value));
184 addr += strlen(ep->ev_value);
186 CALLBACK(copyin, "", addr, 1);
189 CALLBACK(copyin, "", addr, 1);