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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, ".dtb"))
126 return "dtb";
127 return fallback;
128}
129
130static const char *guess_input_format(const char *fname, const char *fallback)
131{
132 struct stat statbuf;
133 fdt32_t magic;
134 FILE *f;
135
136 if (stat(fname, &statbuf) != 0)
137 return fallback;
138
139 if (S_ISDIR(statbuf.st_mode))
140 return "fs";
141
142 if (!S_ISREG(statbuf.st_mode))
143 return fallback;
144
145 f = fopen(fname, "r");
146 if (f == NULL)
147 return fallback;
148 if (fread(&magic, 4, 1, f) != 1) {
149 fclose(f);
150 return fallback;
151 }
152 fclose(f);
153
154 if (fdt32_to_cpu(magic) == FDT_MAGIC)
155 return "dtb";
156
157 return guess_type_by_name(fname, fallback);
158}
159
160int main(int argc, char *argv[])
161{
162 struct dt_info *dti;
163 const char *inform = NULL;
164 const char *outform = NULL;
165 const char *outname = "-";
166 const char *depname = NULL;
167 bool force = false, sort = false;
168 const char *arg;
169 int opt;
170 FILE *outf = NULL;
171 int outversion = DEFAULT_FDT_VERSION;
172 long long cmdline_boot_cpuid = -1;
173
174 quiet = 0;
175 reservenum = 0;
176 minsize = 0;
177 padsize = 0;
178 alignsize = 0;
179
180 while ((opt = util_getopt_long()) != EOF) {
181 switch (opt) {
182 case 'I':
183 inform = optarg;
184 break;
185 case 'O':
186 outform = optarg;
187 break;
188 case 'o':
189 outname = optarg;
190 break;
191 case 'V':
192 outversion = strtol(optarg, NULL, 0);
193 break;
194 case 'd':
195 depname = optarg;
196 break;
197 case 'R':
198 reservenum = strtol(optarg, NULL, 0);
199 break;
200 case 'S':
201 minsize = strtol(optarg, NULL, 0);
202 break;
203 case 'p':
204 padsize = strtol(optarg, NULL, 0);
205 break;
206 case 'a':
207 alignsize = strtol(optarg, NULL, 0);
208 if (!is_power_of_2(alignsize))
209 die("Invalid argument \"%d\" to -a option\n",
210 alignsize);
211 break;
212 case 'f':
213 force = true;
214 break;
215 case 'q':
216 quiet++;
217 break;
218 case 'b':
219 cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
220 break;
221 case 'i':
222 srcfile_add_search_path(optarg);
223 break;
224 case 'v':
225 util_version();
226 case 'H':
227 if (streq(optarg, "legacy"))
228 phandle_format = PHANDLE_LEGACY;
229 else if (streq(optarg, "epapr"))
230 phandle_format = PHANDLE_EPAPR;
231 else if (streq(optarg, "both"))
232 phandle_format = PHANDLE_BOTH;
233 else
234 die("Invalid argument \"%s\" to -H option\n",
235 optarg);
236 break;
237
238 case 's':
239 sort = true;
240 break;
241
242 case 'W':
243 parse_checks_option(true, false, optarg);
244 break;
245
246 case 'E':
247 parse_checks_option(false, true, optarg);
248 break;
249
250 case '@':
251 generate_symbols = 1;
252 break;
253 case 'A':
254 auto_label_aliases = 1;
255 break;
256 case 'T':
257 annotate++;
258 break;
259
260 case 'h':
261 usage(NULL);
262 default:
263 usage("unknown option");
264 }
265 }
266
267 if (argc > (optind+1))
268 usage("missing files");
269 else if (argc < (optind+1))
270 arg = "-";
271 else
272 arg = argv[optind];
273
274
275 if (minsize && padsize)
276 die("Can't set both -p and -S\n");
277
278 if (depname) {
279 depfile = fopen(depname, "w");
280 if (!depfile)
281 die("Couldn't open dependency file %s: %s\n", depname,
282 strerror(errno));
283 fprintf(depfile, "%s:", outname);
284 }
285
286 if (inform == NULL)
287 inform = guess_input_format(arg, "dts");
288 if (outform == NULL) {
289 outform = guess_type_by_name(outname, NULL);
290 if (outform == NULL) {
291 if (streq(inform, "dts"))
292 outform = "dtb";
293 else
294 outform = "dts";
295 }
296 }
297 if (annotate && (!streq(inform, "dts") || !streq(outform, "dts")))
298 die("--annotate requires -I dts -O dts\n");
299 if (streq(inform, "dts"))
300 dti = dt_from_source(arg);
301 else if (streq(inform, "fs"))
302 dti = dt_from_fs(arg);
303 else if(streq(inform, "dtb"))
304 dti = dt_from_blob(arg);
305 else
306 die("Unknown input format \"%s\"\n", inform);
307
308 dti->outname = outname;
309
310 if (depfile) {
311 fputc('\n', depfile);
312 fclose(depfile);
313 }
314
315 if (cmdline_boot_cpuid != -1)
316 dti->boot_cpuid_phys = cmdline_boot_cpuid;
317
318 fill_fullpaths(dti->dt, "");
319
320
321 if (dti->dtsflags & DTSF_PLUGIN) {
322 generate_fixups = 1;
323 }
324
325 process_checks(force, dti);
326
327 if (auto_label_aliases)
328 generate_label_tree(dti, "aliases", false);
329
330 if (generate_symbols)
331 generate_label_tree(dti, "__symbols__", true);
332
333 if (generate_fixups) {
334 generate_fixups_tree(dti, "__fixups__");
335 generate_local_fixups_tree(dti, "__local_fixups__");
336 }
337
338 if (sort)
339 sort_tree(dti);
340
341 if (streq(outname, "-")) {
342 outf = stdout;
343 } else {
344 outf = fopen(outname, "wb");
345 if (! outf)
346 die("Couldn't open output file %s: %s\n",
347 outname, strerror(errno));
348 }
349
350 if (streq(outform, "dts")) {
351 dt_to_source(outf, dti);
352#ifndef NO_YAML
353 } else if (streq(outform, "yaml")) {
354 if (!streq(inform, "dts"))
355 die("YAML output format requires dts input format\n");
356 dt_to_yaml(outf, dti);
357#endif
358 } else if (streq(outform, "dtb")) {
359 dt_to_blob(outf, dti, outversion);
360 } else if (streq(outform, "asm")) {
361 dt_to_asm(outf, dti, outversion);
362 } else if (streq(outform, "null")) {
363
364 } else {
365 die("Unknown output format \"%s\"\n", outform);
366 }
367
368 exit(0);
369}
370
