1 /*
2 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
3 *
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
18 * USA
19 */
20
21 #include <sys/stat.h>
22
23 #include "dtc.h"
24 #include "srcpos.h"
25
26 /*
27 * Command line options
28 */
29 int quiet; /* Level of quietness */
30 int reservenum; /* Number of memory reservation slots */
31 int minsize; /* Minimum blob size */
32 int padsize; /* Additional padding to blob */
33 int alignsize; /* Additional padding to blob accroding to the alignsize */
34 int phandle_format = PHANDLE_EPAPR; /* Use linux,phandle or phandle properties */
35 int generate_symbols; /* enable symbols & fixup support */
36 int generate_fixups; /* suppress generation of fixups on symbol support */
37 int auto_label_aliases; /* auto generate labels -> aliases */
38
is_power_of_2(int x)39 static int is_power_of_2(int x)
40 {
41 return (x > 0) && ((x & (x - 1)) == 0);
42 }
43
fill_fullpaths(struct node * tree,const char * prefix)44 static void fill_fullpaths(struct node *tree, const char *prefix)
45 {
46 struct node *child;
47 const char *unit;
48
49 tree->fullpath = join_path(prefix, tree->name);
50
51 unit = strchr(tree->name, '@');
52 if (unit)
53 tree->basenamelen = unit - tree->name;
54 else
55 tree->basenamelen = strlen(tree->name);
56
57 for_each_child(tree, child)
58 fill_fullpaths(child, tree->fullpath);
59 }
60
61 /* Usage related data. */
62 static const char usage_synopsis[] = "dtc [options] <input file>";
63 static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv";
64 static struct option const usage_long_opts[] = {
65 {"quiet", no_argument, NULL, 'q'},
66 {"in-format", a_argument, NULL, 'I'},
67 {"out", a_argument, NULL, 'o'},
68 {"out-format", a_argument, NULL, 'O'},
69 {"out-version", a_argument, NULL, 'V'},
70 {"out-dependency", a_argument, NULL, 'd'},
71 {"reserve", a_argument, NULL, 'R'},
72 {"space", a_argument, NULL, 'S'},
73 {"pad", a_argument, NULL, 'p'},
74 {"align", a_argument, NULL, 'a'},
75 {"boot-cpu", a_argument, NULL, 'b'},
76 {"force", no_argument, NULL, 'f'},
77 {"include", a_argument, NULL, 'i'},
78 {"sort", no_argument, NULL, 's'},
79 {"phandle", a_argument, NULL, 'H'},
80 {"warning", a_argument, NULL, 'W'},
81 {"error", a_argument, NULL, 'E'},
82 {"symbols", no_argument, NULL, '@'},
83 {"auto-alias", no_argument, NULL, 'A'},
84 {"help", no_argument, NULL, 'h'},
85 {"version", no_argument, NULL, 'v'},
86 {NULL, no_argument, NULL, 0x0},
87 };
88 static const char * const usage_opts_help[] = {
89 "\n\tQuiet: -q suppress warnings, -qq errors, -qqq all",
90 "\n\tInput formats are:\n"
91 "\t\tdts - device tree source text\n"
92 "\t\tdtb - device tree blob\n"
93 "\t\tfs - /proc/device-tree style directory",
94 "\n\tOutput file",
95 "\n\tOutput formats are:\n"
96 "\t\tdts - device tree source text\n"
97 "\t\tdtb - device tree blob\n"
98 "\t\tasm - assembler source",
99 "\n\tBlob version to produce, defaults to "stringify(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
100 "\n\tOutput dependency file",
101 "\n\tMake space for <number> reserve map entries (for dtb and asm output)",
102 "\n\tMake the blob at least <bytes> long (extra space)",
103 "\n\tAdd padding to the blob of <bytes> long (extra space)",
104 "\n\tMake the blob align to the <bytes> (extra space)",
105 "\n\tSet the physical boot cpu",
106 "\n\tTry to produce output even if the input tree has errors",
107 "\n\tAdd a path to search for include files",
108 "\n\tSort nodes and properties before outputting (useful for comparing trees)",
109 "\n\tValid phandle formats are:\n"
110 "\t\tlegacy - \"linux,phandle\" properties only\n"
111 "\t\tepapr - \"phandle\" properties only\n"
112 "\t\tboth - Both \"linux,phandle\" and \"phandle\" properties",
113 "\n\tEnable/disable warnings (prefix with \"no-\")",
114 "\n\tEnable/disable errors (prefix with \"no-\")",
115 "\n\tEnable generation of symbols",
116 "\n\tEnable auto-alias of labels",
117 "\n\tPrint this help and exit",
118 "\n\tPrint version and exit",
119 NULL,
120 };
121
guess_type_by_name(const char * fname,const char * fallback)122 static const char *guess_type_by_name(const char *fname, const char *fallback)
123 {
124 const char *s;
125
126 s = strrchr(fname, '.');
127 if (s == NULL)
128 return fallback;
129 if (!strcasecmp(s, ".dts"))
130 return "dts";
131 if (!strcasecmp(s, ".dtb"))
132 return "dtb";
133 return fallback;
134 }
135
guess_input_format(const char * fname,const char * fallback)136 static const char *guess_input_format(const char *fname, const char *fallback)
137 {
138 struct stat statbuf;
139 fdt32_t magic;
140 FILE *f;
141
142 if (stat(fname, &statbuf) != 0)
143 return fallback;
144
145 if (S_ISDIR(statbuf.st_mode))
146 return "fs";
147
148 if (!S_ISREG(statbuf.st_mode))
149 return fallback;
150
151 f = fopen(fname, "r");
152 if (f == NULL)
153 return fallback;
154 if (fread(&magic, 4, 1, f) != 1) {
155 fclose(f);
156 return fallback;
157 }
158 fclose(f);
159
160 if (fdt32_to_cpu(magic) == FDT_MAGIC)
161 return "dtb";
162
163 return guess_type_by_name(fname, fallback);
164 }
165
main(int argc,char * argv[])166 int main(int argc, char *argv[])
167 {
168 struct dt_info *dti;
169 const char *inform = NULL;
170 const char *outform = NULL;
171 const char *outname = "-";
172 const char *depname = NULL;
173 bool force = false, sort = false;
174 const char *arg;
175 int opt;
176 FILE *outf = NULL;
177 int outversion = DEFAULT_FDT_VERSION;
178 long long cmdline_boot_cpuid = -1;
179
180 quiet = 0;
181 reservenum = 0;
182 minsize = 0;
183 padsize = 0;
184 alignsize = 0;
185
186 while ((opt = util_getopt_long()) != EOF) {
187 switch (opt) {
188 case 'I':
189 inform = optarg;
190 break;
191 case 'O':
192 outform = optarg;
193 break;
194 case 'o':
195 outname = optarg;
196 break;
197 case 'V':
198 outversion = strtol(optarg, NULL, 0);
199 break;
200 case 'd':
201 depname = optarg;
202 break;
203 case 'R':
204 reservenum = strtol(optarg, NULL, 0);
205 break;
206 case 'S':
207 minsize = strtol(optarg, NULL, 0);
208 break;
209 case 'p':
210 padsize = strtol(optarg, NULL, 0);
211 break;
212 case 'a':
213 alignsize = strtol(optarg, NULL, 0);
214 if (!is_power_of_2(alignsize))
215 die("Invalid argument \"%d\" to -a option\n",
216 alignsize);
217 break;
218 case 'f':
219 force = true;
220 break;
221 case 'q':
222 quiet++;
223 break;
224 case 'b':
225 cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
226 break;
227 case 'i':
228 srcfile_add_search_path(optarg);
229 break;
230 case 'v':
231 util_version();
232 case 'H':
233 if (streq(optarg, "legacy"))
234 phandle_format = PHANDLE_LEGACY;
235 else if (streq(optarg, "epapr"))
236 phandle_format = PHANDLE_EPAPR;
237 else if (streq(optarg, "both"))
238 phandle_format = PHANDLE_BOTH;
239 else
240 die("Invalid argument \"%s\" to -H option\n",
241 optarg);
242 break;
243
244 case 's':
245 sort = true;
246 break;
247
248 case 'W':
249 parse_checks_option(true, false, optarg);
250 break;
251
252 case 'E':
253 parse_checks_option(false, true, optarg);
254 break;
255
256 case '@':
257 generate_symbols = 1;
258 break;
259 case 'A':
260 auto_label_aliases = 1;
261 break;
262
263 case 'h':
264 usage(NULL);
265 default:
266 usage("unknown option");
267 }
268 }
269
270 if (argc > (optind+1))
271 usage("missing files");
272 else if (argc < (optind+1))
273 arg = "-";
274 else
275 arg = argv[optind];
276
277 /* minsize and padsize are mutually exclusive */
278 if (minsize && padsize)
279 die("Can't set both -p and -S\n");
280
281 if (depname) {
282 depfile = fopen(depname, "w");
283 if (!depfile)
284 die("Couldn't open dependency file %s: %s\n", depname,
285 strerror(errno));
286 fprintf(depfile, "%s:", outname);
287 }
288
289 if (inform == NULL)
290 inform = guess_input_format(arg, "dts");
291 if (outform == NULL) {
292 outform = guess_type_by_name(outname, NULL);
293 if (outform == NULL) {
294 if (streq(inform, "dts"))
295 outform = "dtb";
296 else
297 outform = "dts";
298 }
299 }
300 if (streq(inform, "dts"))
301 dti = dt_from_source(arg);
302 else if (streq(inform, "fs"))
303 dti = dt_from_fs(arg);
304 else if(streq(inform, "dtb"))
305 dti = dt_from_blob(arg);
306 else
307 die("Unknown input format \"%s\"\n", inform);
308
309 dti->outname = outname;
310
311 if (depfile) {
312 fputc('\n', depfile);
313 fclose(depfile);
314 }
315
316 if (cmdline_boot_cpuid != -1)
317 dti->boot_cpuid_phys = cmdline_boot_cpuid;
318
319 fill_fullpaths(dti->dt, "");
320
321 /* on a plugin, generate by default */
322 if (dti->dtsflags & DTSF_PLUGIN) {
323 generate_fixups = 1;
324 }
325
326 process_checks(force, dti);
327
328 if (auto_label_aliases)
329 generate_label_tree(dti, "aliases", false);
330
331 if (generate_symbols)
332 generate_label_tree(dti, "__symbols__", true);
333
334 if (generate_fixups) {
335 generate_fixups_tree(dti, "__fixups__");
336 generate_local_fixups_tree(dti, "__local_fixups__");
337 }
338
339 if (sort)
340 sort_tree(dti);
341
342 if (streq(outname, "-")) {
343 outf = stdout;
344 } else {
345 outf = fopen(outname, "wb");
346 if (! outf)
347 die("Couldn't open output file %s: %s\n",
348 outname, strerror(errno));
349 }
350
351 if (streq(outform, "dts")) {
352 dt_to_source(outf, dti);
353 } else if (streq(outform, "dtb")) {
354 dt_to_blob(outf, dti, outversion);
355 } else if (streq(outform, "asm")) {
356 dt_to_asm(outf, dti, outversion);
357 } else if (streq(outform, "null")) {
358 /* do nothing */
359 } else {
360 die("Unknown output format \"%s\"\n", outform);
361 }
362
363 exit(0);
364 }
365