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
bi_getboothowto(char * kargs)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
bi_setboothowto(int howto)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
bi_copyenv(vm_offset_t addr)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