1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26
27 #include <sys/types.h>
28 #include <sys/reboot.h>
29 #include <sys/cmn_err.h>
30 #include <sys/bootconf.h>
31 #include <sys/promif.h>
32 #include <sys/obpdefs.h>
33 #include <sys/sunddi.h>
34 #include <sys/systm.h>
35 #include <sys/kobj.h>
36 #include <sys/kobj_impl.h>
37 #include <util/getoptstr.h>
38
39 char *kobj_kmdb_argv[11]; /* 10 arguments and trailing NULL */
40
41 /*
42 * Parse the boot line to determine boot flags.
43 */
44 void
45 bootflags(struct bootops *ops)
46 {
47 struct gos_params params;
48 uchar_t num_O_opt = 0;
49 char *cp;
50 int c;
51 char scratch[BOOTARGS_MAX];
52
53 if (BOP_GETPROP(ops, "bootargs", kern_bootargs) == -1) {
54 boothowto |= RB_ASKNAME;
55 return;
56 }
57
58 (void) BOP_GETPROP(ops, "boot-file", kern_bootfile);
59
60 cp = kern_bootargs;
61
62 #if defined(_OBP)
63 /*
64 * x86: The boot scripts (i.e., /etc/bootrc) don't prepend the kernel
65 * name to the boot arguments. (And beware making it do so: if the
66 * run-kernel command returns, it will loop, and you will end up with
67 * multiple copies of the kernel name.)
68 */
69 if (cp[0] != '-') {
70 /* if user booted kadb or kmdb, load kmdb */
71 if (cp[0] == 'k' && (cp[1] == 'a' || cp[1] == 'm') &&
72 cp[2] == 'd' && cp[3] == 'b' &&
73 (cp[4] == ' ' || cp[4] == ' ' || cp[4] == 0))
74 boothowto |= RB_KMDB;
75 SKIP_WORD(cp); /* Skip the kernel's filename. */
76 }
77 #endif
78 SKIP_SPC(cp);
79
80 #if defined(_OBP)
81 /* skip bootblk args */
82 params.gos_opts = "abcdDf:F:gGHhi:km:o:O:rsvVwxZ:";
83 #else
84 params.gos_opts = "abcdgGhi:km:O:rsvwx";
85 #endif
86 params.gos_strp = cp;
87 getoptstr_init(¶ms);
88 while ((c = getoptstr(¶ms)) != -1) {
89
90 switch (c) {
91 case 'a':
92 boothowto |= RB_ASKNAME;
93 break;
94 case 'b':
95 boothowto |= RB_NOBOOTRC;
96 break;
97 case 'c':
98 boothowto |= RB_CONFIG;
99 break;
100 case 'd':
101 boothowto |= RB_DEBUGENTER;
102 break;
103 #if defined(_OBP)
104 case 'D':
105 case 'F':
106 break;
107 case 'f':
108 (void)prom_setprop(prom_optionsnode(), "diag-level",
109 (char *)params.gos_optargp,
110 params.gos_optarglen + 1);
111 break;
112 #endif
113 case 'g':
114 boothowto |= RB_FORTHDEBUG;
115 break;
116 case 'G':
117 boothowto |= RB_FORTHDEBUGDBP;
118 break;
119 case 'h':
120 boothowto |= RB_HALT;
121 break;
122 #if defined(_OBP)
123 case 'H':
124 break;
125 #endif
126 case 'i':
127 if (params.gos_optarglen + 1 > sizeof (initname)) {
128 _kobj_printf(ops, "krtld: initname too long. "
129 "Ignoring.\n");
130 } else {
131 (void) strncpy(initname, params.gos_optargp,
132 params.gos_optarglen);
133 initname[params.gos_optarglen] = '\0';
134 }
135 break;
136 case 'k':
137 boothowto |= RB_KMDB;
138 break;
139 case 'm':
140 if (strlen(initargs) + 3 + params.gos_optarglen + 1 >
141 sizeof (initargs)) {
142 _kobj_printf(ops,
143 "unix: init options too long. "
144 "Ignoring -m.\n");
145 break;
146 }
147 /* gos_optargp is not null terminated */
148 (void) strncpy(scratch, params.gos_optargp,
149 params.gos_optarglen);
150 scratch[params.gos_optarglen] = '\0';
151 (void) strlcat(initargs, "-m ", sizeof (initargs));
152 (void) strlcat(initargs, scratch,
153 sizeof (initargs));
154 (void) strlcat(initargs, " ", sizeof (initargs));
155 break;
156 #if defined(_OBP)
157 /* Ignore argument meant for wanboot standalone */
158 case 'o':
159 break;
160 #endif
161 case 'O': {
162 char **str = &kobj_kmdb_argv[num_O_opt];
163
164 if (++num_O_opt > (sizeof (kobj_kmdb_argv) /
165 sizeof (char *)) - 1) {
166 _kobj_printf(ops, "krtld: too many kmdb "
167 "options - ignoring option #%d.\n",
168 num_O_opt);
169 continue;
170 }
171
172 *str = kobj_alloc(params.gos_optarglen + 1, KM_TMP);
173 (void) strncpy(*str, params.gos_optargp,
174 params.gos_optarglen);
175 (*str)[params.gos_optarglen] = '\0';
176 break;
177 }
178 case 'r':
179 if (strlen(initargs) + 3 + 1 > sizeof (initargs)) {
180 _kobj_printf(ops, "unix: init options too "
181 "long. Ignoring -r.\n");
182 break;
183 }
184 boothowto |= RB_RECONFIG;
185 (void) strlcat(initargs, "-r ", sizeof (initargs));
186 break;
187 case 's':
188 if (strlen(initargs) + 3 + 1 > sizeof (initargs)) {
189 _kobj_printf(ops, "unix: init options too "
190 "long. Ignoring -s.\n");
191 break;
192 }
193 boothowto |= RB_SINGLE;
194 (void) strlcat(initargs, "-s ", sizeof (initargs));
195 break;
196 case 'v':
197 if (strlen(initargs) + 3 + 1 > sizeof (initargs)) {
198 _kobj_printf(ops, "unix: init options too "
199 "long. Ignoring -v.\n");
200 break;
201 }
202 boothowto |= RB_VERBOSE;
203 (void) strlcat(initargs, "-v ", sizeof (initargs));
204 break;
205 #if defined(_OBP)
206 case 'V':
207 break;
208 case 'Z':
209 break;
210 #endif
211 case 'w':
212 boothowto |= RB_WRITABLE;
213 break;
214 case 'x':
215 boothowto |= RB_NOBOOTCLUSTER;
216 break;
217 case '?':
218 switch (params.gos_last_opt) {
219 case 'i':
220 _kobj_printf(ops, "krtld: Required argument "
221 "for -i flag missing. Ignoring.\n");
222 break;
223 default:
224 _kobj_printf(ops, "krtld: Ignoring invalid "
225 "kernel option -%c.\n",
226 params.gos_last_opt);
227 }
228 break;
229 default:
230 _kobj_printf(ops, "krtld: Ignoring unimplemented "
231 "option -%c.\n", c);
232 }
233 }
234
235 if ((boothowto & (RB_DEBUGENTER | RB_KMDB)) == RB_DEBUGENTER) {
236 _kobj_printf(ops, "krtld: -d is not valid without -k.\n");
237 boothowto &= ~RB_DEBUGENTER;
238 }
239
240 if (*params.gos_strp) {
241 /* Unused arguments. */
242 if (params.gos_strp[0] == '-' && ISSPACE(params.gos_strp[1])) {
243 /*EMPTY*/
244 /* Lousy install arguments. Silently ignore. */
245 } else {
246 _kobj_printf(ops, "krtld: Unused kernel arguments: "
247 "`%s'.\n", params.gos_strp);
248 }
249 }
250 }