1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21#include <sys/stat.h>
22
23#include "dtc.h"
24#include "srcpos.h"
25
26
27
28
29int quiet;
30int reservenum;
31int minsize;
32int padsize;
33int phandle_format = PHANDLE_BOTH;
34
35static void fill_fullpaths(struct node *tree, const char *prefix)
36{
37 struct node *child;
38 const char *unit;
39
40 tree->fullpath = join_path(prefix, tree->name);
41
42 unit = strchr(tree->name, '@');
43 if (unit)
44 tree->basenamelen = unit - tree->name;
45 else
46 tree->basenamelen = strlen(tree->name);
47
48 for_each_child(tree, child)
49 fill_fullpaths(child, tree->fullpath);
50}
51
52
53#define FDT_VERSION(version) _FDT_VERSION(version)
54#define _FDT_VERSION(version) #version
55static const char usage_synopsis[] = "dtc [options] <input file>";
56static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv";
57static struct option const usage_long_opts[] = {
58 {"quiet", no_argument, NULL, 'q'},
59 {"in-format", a_argument, NULL, 'I'},
60 {"out", a_argument, NULL, 'o'},
61 {"out-format", a_argument, NULL, 'O'},
62 {"out-version", a_argument, NULL, 'V'},
63 {"out-dependency", a_argument, NULL, 'd'},
64 {"reserve", a_argument, NULL, 'R'},
65 {"space", a_argument, NULL, 'S'},
66 {"pad", a_argument, NULL, 'p'},
67 {"boot-cpu", a_argument, NULL, 'b'},
68 {"force", no_argument, NULL, 'f'},
69 {"include", a_argument, NULL, 'i'},
70 {"sort", no_argument, NULL, 's'},
71 {"phandle", a_argument, NULL, 'H'},
72 {"warning", a_argument, NULL, 'W'},
73 {"error", a_argument, NULL, 'E'},
74 {"help", no_argument, NULL, 'h'},
75 {"version", no_argument, NULL, 'v'},
76 {NULL, no_argument, NULL, 0x0},
77};
78static const char * const usage_opts_help[] = {
79 "\n\tQuiet: -q suppress warnings, -qq errors, -qqq all",
80 "\n\tInput formats are:\n"
81 "\t\tdts - device tree source text\n"
82 "\t\tdtb - device tree blob\n"
83 "\t\tfs - /proc/device-tree style directory",
84 "\n\tOutput file",
85 "\n\tOutput formats are:\n"
86 "\t\tdts - device tree source text\n"
87 "\t\tdtb - device tree blob\n"
88 "\t\tasm - assembler source",
89 "\n\tBlob version to produce, defaults to "FDT_VERSION(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
90 "\n\tOutput dependency file",
91 "\n\tMake space for <number> reserve map entries (for dtb and asm output)",
92 "\n\tMake the blob at least <bytes> long (extra space)",
93 "\n\tAdd padding to the blob of <bytes> long (extra space)",
94 "\n\tSet the physical boot cpu",
95 "\n\tTry to produce output even if the input tree has errors",
96 "\n\tAdd a path to search for include files",
97 "\n\tSort nodes and properties before outputting (useful for comparing trees)",
98 "\n\tValid phandle formats are:\n"
99 "\t\tlegacy - \"linux,phandle\" properties only\n"
100 "\t\tepapr - \"phandle\" properties only\n"
101 "\t\tboth - Both \"linux,phandle\" and \"phandle\" properties",
102 "\n\tEnable/disable warnings (prefix with \"no-\")",
103 "\n\tEnable/disable errors (prefix with \"no-\")",
104 "\n\tPrint this help and exit",
105 "\n\tPrint version and exit",
106 NULL,
107};
108
109static const char *guess_type_by_name(const char *fname, const char *fallback)
110{
111 const char *s;
112
113 s = strrchr(fname, '.');
114 if (s == NULL)
115 return fallback;
116 if (!strcasecmp(s, ".dts"))
117 return "dts";
118 if (!strcasecmp(s, ".dtb"))
119 return "dtb";
120 return fallback;
121}
122
123static const char *guess_input_format(const char *fname, const char *fallback)
124{
125 struct stat statbuf;
126 uint32_t magic;
127 FILE *f;
128
129 if (stat(fname, &statbuf) != 0)
130 return fallback;
131
132 if (S_ISDIR(statbuf.st_mode))
133 return "fs";
134
135 if (!S_ISREG(statbuf.st_mode))
136 return fallback;
137
138 f = fopen(fname, "r");
139 if (f == NULL)
140 return fallback;
141 if (fread(&magic, 4, 1, f) != 1) {
142 fclose(f);
143 return fallback;
144 }
145 fclose(f);
146
147 magic = fdt32_to_cpu(magic);
148 if (magic == FDT_MAGIC)
149 return "dtb";
150
151 return guess_type_by_name(fname, fallback);
152}
153
154int main(int argc, char *argv[])
155{
156 struct boot_info *bi;
157 const char *inform = NULL;
158 const char *outform = NULL;
159 const char *outname = "-";
160 const char *depname = NULL;
161 bool force = false, sort = false;
162 const char *arg;
163 int opt;
164 FILE *outf = NULL;
165 int outversion = DEFAULT_FDT_VERSION;
166 long long cmdline_boot_cpuid = -1;
167
168 quiet = 0;
169 reservenum = 0;
170 minsize = 0;
171 padsize = 0;
172
173 while ((opt = util_getopt_long()) != EOF) {
174 switch (opt) {
175 case 'I':
176 inform = optarg;
177 break;
178 case 'O':
179 outform = optarg;
180 break;
181 case 'o':
182 outname = optarg;
183 break;
184 case 'V':
185 outversion = strtol(optarg, NULL, 0);
186 break;
187 case 'd':
188 depname = optarg;
189 break;
190 case 'R':
191 reservenum = strtol(optarg, NULL, 0);
192 break;
193 case 'S':
194 minsize = strtol(optarg, NULL, 0);
195 break;
196 case 'p':
197 padsize = strtol(optarg, NULL, 0);
198 break;
199 case 'f':
200 force = true;
201 break;
202 case 'q':
203 quiet++;
204 break;
205 case 'b':
206 cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
207 break;
208 case 'i':
209 srcfile_add_search_path(optarg);
210 break;
211 case 'v':
212 util_version();
213 case 'H':
214 if (streq(optarg, "legacy"))
215 phandle_format = PHANDLE_LEGACY;
216 else if (streq(optarg, "epapr"))
217 phandle_format = PHANDLE_EPAPR;
218 else if (streq(optarg, "both"))
219 phandle_format = PHANDLE_BOTH;
220 else
221 die("Invalid argument \"%s\" to -H option\n",
222 optarg);
223 break;
224
225 case 's':
226 sort = true;
227 break;
228
229 case 'W':
230 parse_checks_option(true, false, optarg);
231 break;
232
233 case 'E':
234 parse_checks_option(false, true, optarg);
235 break;
236
237 case 'h':
238 usage(NULL);
239 default:
240 usage("unknown option");
241 }
242 }
243
244 if (argc > (optind+1))
245 usage("missing files");
246 else if (argc < (optind+1))
247 arg = "-";
248 else
249 arg = argv[optind];
250
251
252 if (minsize && padsize)
253 die("Can't set both -p and -S\n");
254
255 if (depname) {
256 depfile = fopen(depname, "w");
257 if (!depfile)
258 die("Couldn't open dependency file %s: %s\n", depname,
259 strerror(errno));
260 fprintf(depfile, "%s:", outname);
261 }
262
263 if (inform == NULL)
264 inform = guess_input_format(arg, "dts");
265 if (outform == NULL) {
266 outform = guess_type_by_name(outname, NULL);
267 if (outform == NULL) {
268 if (streq(inform, "dts"))
269 outform = "dtb";
270 else
271 outform = "dts";
272 }
273 }
274 if (streq(inform, "dts"))
275 bi = dt_from_source(arg);
276 else if (streq(inform, "fs"))
277 bi = dt_from_fs(arg);
278 else if(streq(inform, "dtb"))
279 bi = dt_from_blob(arg);
280 else
281 die("Unknown input format \"%s\"\n", inform);
282
283 if (depfile) {
284 fputc('\n', depfile);
285 fclose(depfile);
286 }
287
288 if (cmdline_boot_cpuid != -1)
289 bi->boot_cpuid_phys = cmdline_boot_cpuid;
290
291 fill_fullpaths(bi->dt, "");
292 process_checks(force, bi);
293
294 if (sort)
295 sort_tree(bi);
296
297 if (streq(outname, "-")) {
298 outf = stdout;
299 } else {
300 outf = fopen(outname, "wb");
301 if (! outf)
302 die("Couldn't open output file %s: %s\n",
303 outname, strerror(errno));
304 }
305
306 if (streq(outform, "dts")) {
307 dt_to_source(outf, bi);
308 } else if (streq(outform, "dtb")) {
309 dt_to_blob(outf, bi, outversion);
310 } else if (streq(outform, "asm")) {
311 dt_to_asm(outf, bi, outversion);
312 } else if (streq(outform, "null")) {
313
314 } else {
315 die("Unknown output format \"%s\"\n", outform);
316 }
317
318 exit(0);
319}
320
