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4
5
6#include <sys/stat.h>
7
8#include "dtc.h"
9#include "srcpos.h"
10
11
12
13
14int quiet;
15int reservenum;
16int minsize;
17int padsize;
18int alignsize;
19int phandle_format = PHANDLE_EPAPR;
20int generate_symbols;
21int generate_fixups;
22int auto_label_aliases;
23int annotate;
24
25
26static int is_power_of_2(int x)
27{
28 return (x > 0) && ((x & (x - 1)) == 0);
29}
30
31static void fill_fullpaths(struct node *tree, const char *prefix)
32{
33 struct node *child;
34 const char *unit;
35
36 tree->fullpath = join_path(prefix, tree->name);
37
38 unit = strchr(tree->name, '@');
39 if (unit)
40 tree->basenamelen = unit - tree->name;
41 else
42 tree->basenamelen = strlen(tree->name);
43
44 for_each_child(tree, child)
45 fill_fullpaths(child, tree->fullpath);
46}
47
48
49static const char usage_synopsis[] = "dtc [options] <input file>";
50static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@AThv";
51static struct option const usage_long_opts[] = {
52 {"quiet", no_argument, NULL, 'q'},
53 {"in-format", a_argument, NULL, 'I'},
54 {"out", a_argument, NULL, 'o'},
55 {"out-format", a_argument, NULL, 'O'},
56 {"out-version", a_argument, NULL, 'V'},
57 {"out-dependency", a_argument, NULL, 'd'},
58 {"reserve", a_argument, NULL, 'R'},
59 {"space", a_argument, NULL, 'S'},
60 {"pad", a_argument, NULL, 'p'},
61 {"align", a_argument, NULL, 'a'},
62 {"boot-cpu", a_argument, NULL, 'b'},
63 {"force", no_argument, NULL, 'f'},
64 {"include", a_argument, NULL, 'i'},
65 {"sort", no_argument, NULL, 's'},
66 {"phandle", a_argument, NULL, 'H'},
67 {"warning", a_argument, NULL, 'W'},
68 {"error", a_argument, NULL, 'E'},
69 {"symbols", no_argument, NULL, '@'},
70 {"auto-alias", no_argument, NULL, 'A'},
71 {"annotate", no_argument, NULL, 'T'},
72 {"help", no_argument, NULL, 'h'},
73 {"version", no_argument, NULL, 'v'},
74 {NULL, no_argument, NULL, 0x0},
75};
76static const char * const usage_opts_help[] = {
77 "\n\tQuiet: -q suppress warnings, -qq errors, -qqq all",
78 "\n\tInput formats are:\n"
79 "\t\tdts - device tree source text\n"
80 "\t\tdtb - device tree blob\n"
81 "\t\tfs - /proc/device-tree style directory",
82 "\n\tOutput file",
83 "\n\tOutput formats are:\n"
84 "\t\tdts - device tree source text\n"
85 "\t\tdtb - device tree blob\n"
86#ifndef NO_YAML
87 "\t\tyaml - device tree encoded as YAML\n"
88#endif
89 "\t\tasm - assembler source",
90 "\n\tBlob version to produce, defaults to "stringify(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
91 "\n\tOutput dependency file",
92 "\n\tMake space for <number> reserve map entries (for dtb and asm output)",
93 "\n\tMake the blob at least <bytes> long (extra space)",
94 "\n\tAdd padding to the blob of <bytes> long (extra space)",
95 "\n\tMake the blob align to the <bytes> (extra space)",
96 "\n\tSet the physical boot cpu",
97 "\n\tTry to produce output even if the input tree has errors",
98 "\n\tAdd a path to search for include files",
99 "\n\tSort nodes and properties before outputting (useful for comparing trees)",
100 "\n\tValid phandle formats are:\n"
101 "\t\tlegacy - \"linux,phandle\" properties only\n"
102 "\t\tepapr - \"phandle\" properties only\n"
103 "\t\tboth - Both \"linux,phandle\" and \"phandle\" properties",
104 "\n\tEnable/disable warnings (prefix with \"no-\")",
105 "\n\tEnable/disable errors (prefix with \"no-\")",
106 "\n\tEnable generation of symbols",
107 "\n\tEnable auto-alias of labels",
108 "\n\tAnnotate output .dts with input source file and line (-T -T for more details)",
109 "\n\tPrint this help and exit",
110 "\n\tPrint version and exit",
111 NULL,
112};
113
114static const char *guess_type_by_name(const char *fname, const char *fallback)
115{
116 const char *s;
117
118 s = strrchr(fname, '.');
119 if (s == NULL)
120 return fallback;
121 if (!strcasecmp(s, ".dts"))
122 return "dts";
123 if (!strcasecmp(s, ".yaml"))
124 return "yaml";
125 if (!strcasecmp(s, ".dtbo"))
126 return "dtb";
127 if (!strcasecmp(s, ".dtb"))
128 return "dtb";
129 return fallback;
130}
131
132static const char *guess_input_format(const char *fname, const char *fallback)
133{
134 struct stat statbuf;
135 fdt32_t magic;
136 FILE *f;
137
138 if (stat(fname, &statbuf) != 0)
139 return fallback;
140
141 if (S_ISDIR(statbuf.st_mode))
142 return "fs";
143
144 if (!S_ISREG(statbuf.st_mode))
145 return fallback;
146
147 f = fopen(fname, "r");
148 if (f == NULL)
149 return fallback;
150 if (fread(&magic, 4, 1, f) != 1) {
151 fclose(f);
152 return fallback;
153 }
154 fclose(f);
155
156 if (fdt32_to_cpu(magic) == FDT_MAGIC)
157 return "dtb";
158
159 return guess_type_by_name(fname, fallback);
160}
161
162int main(int argc, char *argv[])
163{
164 struct dt_info *dti;
165 const char *inform = NULL;
166 const char *outform = NULL;
167 const char *outname = "-";
168 const char *depname = NULL;
169 bool force = false, sort = false;
170 const char *arg;
171 int opt;
172 FILE *outf = NULL;
173 int outversion = DEFAULT_FDT_VERSION;
174 long long cmdline_boot_cpuid = -1;
175
176 quiet = 0;
177 reservenum = 0;
178 minsize = 0;
179 padsize = 0;
180 alignsize = 0;
181
182 while ((opt = util_getopt_long()) != EOF) {
183 switch (opt) {
184 case 'I':
185 inform = optarg;
186 break;
187 case 'O':
188 outform = optarg;
189 break;
190 case 'o':
191 outname = optarg;
192 break;
193 case 'V':
194 outversion = strtol(optarg, NULL, 0);
195 break;
196 case 'd':
197 depname = optarg;
198 break;
199 case 'R':
200 reservenum = strtol(optarg, NULL, 0);
201 break;
202 case 'S':
203 minsize = strtol(optarg, NULL, 0);
204 break;
205 case 'p':
206 padsize = strtol(optarg, NULL, 0);
207 break;
208 case 'a':
209 alignsize = strtol(optarg, NULL, 0);
210 if (!is_power_of_2(alignsize))
211 die("Invalid argument \"%d\" to -a option\n",
212 alignsize);
213 break;
214 case 'f':
215 force = true;
216 break;
217 case 'q':
218 quiet++;
219 break;
220 case 'b':
221 cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
222 break;
223 case 'i':
224 srcfile_add_search_path(optarg);
225 break;
226 case 'v':
227 util_version();
228 case 'H':
229 if (streq(optarg, "legacy"))
230 phandle_format = PHANDLE_LEGACY;
231 else if (streq(optarg, "epapr"))
232 phandle_format = PHANDLE_EPAPR;
233 else if (streq(optarg, "both"))
234 phandle_format = PHANDLE_BOTH;
235 else
236 die("Invalid argument \"%s\" to -H option\n",
237 optarg);
238 break;
239
240 case 's':
241 sort = true;
242 break;
243
244 case 'W':
245 parse_checks_option(true, false, optarg);
246 break;
247
248 case 'E':
249 parse_checks_option(false, true, optarg);
250 break;
251
252 case '@':
253 generate_symbols = 1;
254 break;
255 case 'A':
256 auto_label_aliases = 1;
257 break;
258 case 'T':
259 annotate++;
260 break;
261
262 case 'h':
263 usage(NULL);
264 default:
265 usage("unknown option");
266 }
267 }
268
269 if (argc > (optind+1))
270 usage("missing files");
271 else if (argc < (optind+1))
272 arg = "-";
273 else
274 arg = argv[optind];
275
276
277 if (minsize && padsize)
278 die("Can't set both -p and -S\n");
279
280 if (depname) {
281 depfile = fopen(depname, "w");
282 if (!depfile)
283 die("Couldn't open dependency file %s: %s\n", depname,
284 strerror(errno));
285 fprintf(depfile, "%s:", outname);
286 }
287
288 if (inform == NULL)
289 inform = guess_input_format(arg, "dts");
290 if (outform == NULL) {
291 outform = guess_type_by_name(outname, NULL);
292 if (outform == NULL) {
293 if (streq(inform, "dts"))
294 outform = "dtb";
295 else
296 outform = "dts";
297 }
298 }
299 if (annotate && (!streq(inform, "dts") || !streq(outform, "dts")))
300 die("--annotate requires -I dts -O dts\n");
301 if (streq(inform, "dts"))
302 dti = dt_from_source(arg);
303 else if (streq(inform, "fs"))
304 dti = dt_from_fs(arg);
305 else if(streq(inform, "dtb"))
306 dti = dt_from_blob(arg);
307 else
308 die("Unknown input format \"%s\"\n", inform);
309
310 dti->outname = outname;
311
312 if (depfile) {
313 fputc('\n', depfile);
314 fclose(depfile);
315 }
316
317 if (cmdline_boot_cpuid != -1)
318 dti->boot_cpuid_phys = cmdline_boot_cpuid;
319
320 fill_fullpaths(dti->dt, "");
321
322
323 if (dti->dtsflags & DTSF_PLUGIN) {
324 generate_fixups = 1;
325 }
326
327 process_checks(force, dti);
328
329 if (auto_label_aliases)
330 generate_label_tree(dti, "aliases", false);
331
332 if (generate_symbols)
333 generate_label_tree(dti, "__symbols__", true);
334
335 if (generate_fixups) {
336 generate_fixups_tree(dti, "__fixups__");
337 generate_local_fixups_tree(dti, "__local_fixups__");
338 }
339
340 if (sort)
341 sort_tree(dti);
342
343 if (streq(outname, "-")) {
344 outf = stdout;
345 } else {
346 outf = fopen(outname, "wb");
347 if (! outf)
348 die("Couldn't open output file %s: %s\n",
349 outname, strerror(errno));
350 }
351
352 if (streq(outform, "dts")) {
353 dt_to_source(outf, dti);
354#ifndef NO_YAML
355 } else if (streq(outform, "yaml")) {
356 if (!streq(inform, "dts"))
357 die("YAML output format requires dts input format\n");
358 dt_to_yaml(outf, dti);
359#endif
360 } else if (streq(outform, "dtb")) {
361 dt_to_blob(outf, dti, outversion);
362 } else if (streq(outform, "dtbo")) {
363 dt_to_blob(outf, dti, outversion);
364 } else if (streq(outform, "asm")) {
365 dt_to_asm(outf, dti, outversion);
366 } else if (streq(outform, "null")) {
367
368 } else {
369 die("Unknown output format \"%s\"\n", outform);
370 }
371
372 exit(0);
373}
374
