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 * Sparc only, _OBP isn't defined on x86 any more.
65 */
66 if (cp[0] != '-') {
67 /* if user booted kadb or kmdb, load kmdb */
68 if (cp[0] == 'k' && (cp[1] == 'a' || cp[1] == 'm') &&
69 cp[2] == 'd' && cp[3] == 'b' &&
70 (cp[4] == ' ' || cp[4] == ' ' || cp[4] == 0))
71 boothowto |= RB_KMDB;
72 SKIP_WORD(cp); /* Skip the kernel's filename. */
73 }
74 #endif
75 SKIP_SPC(cp);
76
77 #if defined(_OBP)
78 /* skip bootblk args */
79 params.gos_opts = "abcdDf:F:gGHhi:km:o:O:rsvVwxZ:";
80 #else
81 params.gos_opts = "abcdgGhi:km:O:rsvwx";
82 #endif
83 params.gos_strp = cp;
84 getoptstr_init(¶ms);
85 while ((c = getoptstr(¶ms)) != -1) {
86
87 switch (c) {
88 case 'a':
89 boothowto |= RB_ASKNAME;
90 break;
91 case 'b':
92 boothowto |= RB_NOBOOTRC;
93 break;
94 case 'c':
95 boothowto |= RB_CONFIG;
96 break;
97 case 'd':
98 boothowto |= RB_DEBUGENTER;
99 break;
100 #if defined(_OBP)
101 case 'D':
102 case 'F':
103 break;
104 case 'f':
105 (void) prom_setprop(prom_optionsnode(), "diag-level",
106 (char *)params.gos_optargp,
107 params.gos_optarglen + 1);
108 break;
109 #endif
110 case 'g':
111 boothowto |= RB_FORTHDEBUG;
112 break;
113 case 'G':
114 boothowto |= RB_FORTHDEBUGDBP;
115 break;
116 case 'h':
117 boothowto |= RB_HALT;
118 break;
119 #if defined(_OBP)
120 case 'H':
121 break;
122 #endif
123 case 'i':
124 if (params.gos_optarglen + 1 > sizeof (initname)) {
125 _kobj_printf(ops, "krtld: initname too long. "
126 "Ignoring.\n");
127 } else {
128 (void) strncpy(initname, params.gos_optargp,
129 params.gos_optarglen);
130 initname[params.gos_optarglen] = '\0';
131 }
132 break;
133 case 'k':
134 boothowto |= RB_KMDB;
135 break;
136 case 'm':
137 if (strlen(initargs) + 3 + params.gos_optarglen + 1 >
138 sizeof (initargs)) {
139 _kobj_printf(ops,
140 "unix: init options too long. "
141 "Ignoring -m.\n");
142 break;
143 }
144 /* gos_optargp is not null terminated */
145 (void) strncpy(scratch, params.gos_optargp,
146 params.gos_optarglen);
147 scratch[params.gos_optarglen] = '\0';
148 (void) strlcat(initargs, "-m ", sizeof (initargs));
149 (void) strlcat(initargs, scratch,
150 sizeof (initargs));
151 (void) strlcat(initargs, " ", sizeof (initargs));
152 break;
153 #if defined(_OBP)
154 /* Ignore argument meant for wanboot standalone */
155 case 'o':
156 break;
157 #endif
158 case 'O': {
159 char **str = &kobj_kmdb_argv[num_O_opt];
160
161 if (++num_O_opt > (sizeof (kobj_kmdb_argv) /
162 sizeof (char *)) - 1) {
163 _kobj_printf(ops, "krtld: too many kmdb "
164 "options - ignoring option #%d.\n",
165 num_O_opt);
166 continue;
167 }
168
169 *str = kobj_alloc(params.gos_optarglen + 1, KM_TMP);
170 (void) strncpy(*str, params.gos_optargp,
171 params.gos_optarglen);
172 (*str)[params.gos_optarglen] = '\0';
173 break;
174 }
175 case 'r':
176 if (strlen(initargs) + 3 + 1 > sizeof (initargs)) {
177 _kobj_printf(ops, "unix: init options too "
178 "long. Ignoring -r.\n");
179 break;
180 }
181 boothowto |= RB_RECONFIG;
182 (void) strlcat(initargs, "-r ", sizeof (initargs));
183 break;
184 case 's':
185 if (strlen(initargs) + 3 + 1 > sizeof (initargs)) {
186 _kobj_printf(ops, "unix: init options too "
187 "long. Ignoring -s.\n");
188 break;
189 }
190 boothowto |= RB_SINGLE;
191 (void) strlcat(initargs, "-s ", sizeof (initargs));
192 break;
193 case 'v':
194 if (strlen(initargs) + 3 + 1 > sizeof (initargs)) {
195 _kobj_printf(ops, "unix: init options too "
196 "long. Ignoring -v.\n");
197 break;
198 }
199 boothowto |= RB_VERBOSE;
200 (void) strlcat(initargs, "-v ", sizeof (initargs));
201 break;
202 #if defined(_OBP)
203 case 'V':
204 break;
205 case 'Z':
206 break;
207 #endif
208 case 'w':
209 boothowto |= RB_WRITABLE;
210 break;
211 case 'x':
212 boothowto |= RB_NOBOOTCLUSTER;
213 break;
214 case '?':
215 switch (params.gos_last_opt) {
216 case 'i':
217 _kobj_printf(ops, "krtld: Required argument "
218 "for -i flag missing. Ignoring.\n");
219 break;
220 default:
221 _kobj_printf(ops, "krtld: Ignoring invalid "
222 "kernel option -%c.\n",
223 params.gos_last_opt);
224 }
225 break;
226 default:
227 _kobj_printf(ops, "krtld: Ignoring unimplemented "
228 "option -%c.\n", c);
229 }
230 }
231
232 if ((boothowto & (RB_DEBUGENTER | RB_KMDB)) == RB_DEBUGENTER) {
233 _kobj_printf(ops, "krtld: -d is not valid without -k.\n");
234 boothowto &= ~RB_DEBUGENTER;
235 }
236
237 if (*params.gos_strp) {
238 /* Unused arguments. */
239 if (params.gos_strp[0] == '-' && ISSPACE(params.gos_strp[1])) {
240 /*EMPTY*/
241 /* Lousy install arguments. Silently ignore. */
242 } else {
243 _kobj_printf(ops, "krtld: Unused kernel arguments: "
244 "`%s'.\n", params.gos_strp);
245 }
246 }
247 }