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a4da2e3e DG |
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 | ||
91feabc2 RH |
21 | #include <sys/stat.h> |
22 | ||
a4da2e3e DG |
23 | #include "dtc.h" |
24 | #include "srcpos.h" | |
25 | ||
a4da2e3e DG |
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 */ | |
6f05afcb | 33 | int alignsize; /* Additional padding to blob accroding to the alignsize */ |
658f29a5 | 34 | int phandle_format = PHANDLE_BOTH; /* Use linux,phandle or phandle properties */ |
6f05afcb RH |
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 | ||
39 | static int is_power_of_2(int x) | |
40 | { | |
41 | return (x > 0) && ((x & (x - 1)) == 0); | |
42 | } | |
a4da2e3e | 43 | |
ed95d745 | 44 | static void fill_fullpaths(struct node *tree, const char *prefix) |
a4da2e3e DG |
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 | ||
73ab39b1 | 61 | /* Usage related data. */ |
47605971 RH |
62 | #define FDT_VERSION(version) _FDT_VERSION(version) |
63 | #define _FDT_VERSION(version) #version | |
73ab39b1 | 64 | static const char usage_synopsis[] = "dtc [options] <input file>"; |
6f05afcb | 65 | static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv"; |
73ab39b1 GL |
66 | static struct option const usage_long_opts[] = { |
67 | {"quiet", no_argument, NULL, 'q'}, | |
68 | {"in-format", a_argument, NULL, 'I'}, | |
69 | {"out", a_argument, NULL, 'o'}, | |
70 | {"out-format", a_argument, NULL, 'O'}, | |
71 | {"out-version", a_argument, NULL, 'V'}, | |
72 | {"out-dependency", a_argument, NULL, 'd'}, | |
73 | {"reserve", a_argument, NULL, 'R'}, | |
74 | {"space", a_argument, NULL, 'S'}, | |
75 | {"pad", a_argument, NULL, 'p'}, | |
6f05afcb | 76 | {"align", a_argument, NULL, 'a'}, |
73ab39b1 GL |
77 | {"boot-cpu", a_argument, NULL, 'b'}, |
78 | {"force", no_argument, NULL, 'f'}, | |
79 | {"include", a_argument, NULL, 'i'}, | |
80 | {"sort", no_argument, NULL, 's'}, | |
81 | {"phandle", a_argument, NULL, 'H'}, | |
82 | {"warning", a_argument, NULL, 'W'}, | |
83 | {"error", a_argument, NULL, 'E'}, | |
6f05afcb RH |
84 | {"symbols", no_argument, NULL, '@'}, |
85 | {"auto-alias", no_argument, NULL, 'A'}, | |
73ab39b1 GL |
86 | {"help", no_argument, NULL, 'h'}, |
87 | {"version", no_argument, NULL, 'v'}, | |
88 | {NULL, no_argument, NULL, 0x0}, | |
89 | }; | |
90 | static const char * const usage_opts_help[] = { | |
91 | "\n\tQuiet: -q suppress warnings, -qq errors, -qqq all", | |
92 | "\n\tInput formats are:\n" | |
93 | "\t\tdts - device tree source text\n" | |
94 | "\t\tdtb - device tree blob\n" | |
95 | "\t\tfs - /proc/device-tree style directory", | |
96 | "\n\tOutput file", | |
97 | "\n\tOutput formats are:\n" | |
98 | "\t\tdts - device tree source text\n" | |
99 | "\t\tdtb - device tree blob\n" | |
100 | "\t\tasm - assembler source", | |
47605971 | 101 | "\n\tBlob version to produce, defaults to "FDT_VERSION(DEFAULT_FDT_VERSION)" (for dtb and asm output)", |
73ab39b1 | 102 | "\n\tOutput dependency file", |
47605971 | 103 | "\n\tMake space for <number> reserve map entries (for dtb and asm output)", |
73ab39b1 GL |
104 | "\n\tMake the blob at least <bytes> long (extra space)", |
105 | "\n\tAdd padding to the blob of <bytes> long (extra space)", | |
6f05afcb | 106 | "\n\tMake the blob align to the <bytes> (extra space)", |
73ab39b1 GL |
107 | "\n\tSet the physical boot cpu", |
108 | "\n\tTry to produce output even if the input tree has errors", | |
109 | "\n\tAdd a path to search for include files", | |
110 | "\n\tSort nodes and properties before outputting (useful for comparing trees)", | |
111 | "\n\tValid phandle formats are:\n" | |
112 | "\t\tlegacy - \"linux,phandle\" properties only\n" | |
113 | "\t\tepapr - \"phandle\" properties only\n" | |
114 | "\t\tboth - Both \"linux,phandle\" and \"phandle\" properties", | |
115 | "\n\tEnable/disable warnings (prefix with \"no-\")", | |
116 | "\n\tEnable/disable errors (prefix with \"no-\")", | |
6f05afcb RH |
117 | "\n\tEnable generation of symbols", |
118 | "\n\tEnable auto-alias of labels", | |
73ab39b1 GL |
119 | "\n\tPrint this help and exit", |
120 | "\n\tPrint version and exit", | |
121 | NULL, | |
122 | }; | |
a4da2e3e | 123 | |
91feabc2 RH |
124 | static const char *guess_type_by_name(const char *fname, const char *fallback) |
125 | { | |
126 | const char *s; | |
127 | ||
128 | s = strrchr(fname, '.'); | |
129 | if (s == NULL) | |
130 | return fallback; | |
131 | if (!strcasecmp(s, ".dts")) | |
132 | return "dts"; | |
133 | if (!strcasecmp(s, ".dtb")) | |
134 | return "dtb"; | |
135 | return fallback; | |
136 | } | |
137 | ||
138 | static const char *guess_input_format(const char *fname, const char *fallback) | |
139 | { | |
140 | struct stat statbuf; | |
141 | uint32_t magic; | |
142 | FILE *f; | |
143 | ||
144 | if (stat(fname, &statbuf) != 0) | |
145 | return fallback; | |
146 | ||
147 | if (S_ISDIR(statbuf.st_mode)) | |
148 | return "fs"; | |
149 | ||
150 | if (!S_ISREG(statbuf.st_mode)) | |
151 | return fallback; | |
152 | ||
153 | f = fopen(fname, "r"); | |
154 | if (f == NULL) | |
155 | return fallback; | |
156 | if (fread(&magic, 4, 1, f) != 1) { | |
157 | fclose(f); | |
158 | return fallback; | |
159 | } | |
160 | fclose(f); | |
161 | ||
162 | magic = fdt32_to_cpu(magic); | |
163 | if (magic == FDT_MAGIC) | |
164 | return "dtb"; | |
165 | ||
166 | return guess_type_by_name(fname, fallback); | |
167 | } | |
168 | ||
a4da2e3e DG |
169 | int main(int argc, char *argv[]) |
170 | { | |
6f05afcb | 171 | struct dt_info *dti; |
91feabc2 RH |
172 | const char *inform = NULL; |
173 | const char *outform = NULL; | |
a4da2e3e | 174 | const char *outname = "-"; |
136ec204 | 175 | const char *depname = NULL; |
47605971 | 176 | bool force = false, sort = false; |
a4da2e3e DG |
177 | const char *arg; |
178 | int opt; | |
a4da2e3e DG |
179 | FILE *outf = NULL; |
180 | int outversion = DEFAULT_FDT_VERSION; | |
ed95d745 | 181 | long long cmdline_boot_cpuid = -1; |
a4da2e3e DG |
182 | |
183 | quiet = 0; | |
184 | reservenum = 0; | |
185 | minsize = 0; | |
186 | padsize = 0; | |
6f05afcb | 187 | alignsize = 0; |
a4da2e3e | 188 | |
73ab39b1 | 189 | while ((opt = util_getopt_long()) != EOF) { |
a4da2e3e DG |
190 | switch (opt) { |
191 | case 'I': | |
192 | inform = optarg; | |
193 | break; | |
194 | case 'O': | |
195 | outform = optarg; | |
196 | break; | |
197 | case 'o': | |
198 | outname = optarg; | |
199 | break; | |
200 | case 'V': | |
201 | outversion = strtol(optarg, NULL, 0); | |
202 | break; | |
136ec204 SW |
203 | case 'd': |
204 | depname = optarg; | |
205 | break; | |
a4da2e3e DG |
206 | case 'R': |
207 | reservenum = strtol(optarg, NULL, 0); | |
208 | break; | |
209 | case 'S': | |
210 | minsize = strtol(optarg, NULL, 0); | |
211 | break; | |
212 | case 'p': | |
213 | padsize = strtol(optarg, NULL, 0); | |
214 | break; | |
6f05afcb RH |
215 | case 'a': |
216 | alignsize = strtol(optarg, NULL, 0); | |
217 | if (!is_power_of_2(alignsize)) | |
218 | die("Invalid argument \"%d\" to -a option\n", | |
219 | optarg); | |
220 | break; | |
a4da2e3e | 221 | case 'f': |
47605971 | 222 | force = true; |
a4da2e3e | 223 | break; |
a4da2e3e DG |
224 | case 'q': |
225 | quiet++; | |
226 | break; | |
227 | case 'b': | |
ed95d745 | 228 | cmdline_boot_cpuid = strtoll(optarg, NULL, 0); |
a4da2e3e | 229 | break; |
cd296721 SW |
230 | case 'i': |
231 | srcfile_add_search_path(optarg); | |
232 | break; | |
a4da2e3e | 233 | case 'v': |
73ab39b1 | 234 | util_version(); |
658f29a5 JB |
235 | case 'H': |
236 | if (streq(optarg, "legacy")) | |
237 | phandle_format = PHANDLE_LEGACY; | |
238 | else if (streq(optarg, "epapr")) | |
239 | phandle_format = PHANDLE_EPAPR; | |
240 | else if (streq(optarg, "both")) | |
241 | phandle_format = PHANDLE_BOTH; | |
242 | else | |
243 | die("Invalid argument \"%s\" to -H option\n", | |
244 | optarg); | |
245 | break; | |
246 | ||
247 | case 's': | |
47605971 | 248 | sort = true; |
658f29a5 JB |
249 | break; |
250 | ||
cd296721 SW |
251 | case 'W': |
252 | parse_checks_option(true, false, optarg); | |
253 | break; | |
254 | ||
255 | case 'E': | |
256 | parse_checks_option(false, true, optarg); | |
257 | break; | |
258 | ||
6f05afcb RH |
259 | case '@': |
260 | generate_symbols = 1; | |
261 | break; | |
262 | case 'A': | |
263 | auto_label_aliases = 1; | |
264 | break; | |
265 | ||
a4da2e3e | 266 | case 'h': |
73ab39b1 | 267 | usage(NULL); |
a4da2e3e | 268 | default: |
73ab39b1 | 269 | usage("unknown option"); |
a4da2e3e DG |
270 | } |
271 | } | |
272 | ||
273 | if (argc > (optind+1)) | |
73ab39b1 | 274 | usage("missing files"); |
a4da2e3e DG |
275 | else if (argc < (optind+1)) |
276 | arg = "-"; | |
277 | else | |
278 | arg = argv[optind]; | |
279 | ||
280 | /* minsize and padsize are mutually exclusive */ | |
ed95d745 | 281 | if (minsize && padsize) |
a4da2e3e | 282 | die("Can't set both -p and -S\n"); |
a4da2e3e | 283 | |
136ec204 SW |
284 | if (depname) { |
285 | depfile = fopen(depname, "w"); | |
286 | if (!depfile) | |
287 | die("Couldn't open dependency file %s: %s\n", depname, | |
288 | strerror(errno)); | |
289 | fprintf(depfile, "%s:", outname); | |
290 | } | |
291 | ||
91feabc2 RH |
292 | if (inform == NULL) |
293 | inform = guess_input_format(arg, "dts"); | |
294 | if (outform == NULL) { | |
295 | outform = guess_type_by_name(outname, NULL); | |
296 | if (outform == NULL) { | |
297 | if (streq(inform, "dts")) | |
298 | outform = "dtb"; | |
299 | else | |
300 | outform = "dts"; | |
301 | } | |
302 | } | |
ed95d745 | 303 | if (streq(inform, "dts")) |
6f05afcb | 304 | dti = dt_from_source(arg); |
ed95d745 | 305 | else if (streq(inform, "fs")) |
6f05afcb | 306 | dti = dt_from_fs(arg); |
ed95d745 | 307 | else if(streq(inform, "dtb")) |
6f05afcb | 308 | dti = dt_from_blob(arg); |
ed95d745 | 309 | else |
a4da2e3e | 310 | die("Unknown input format \"%s\"\n", inform); |
a4da2e3e | 311 | |
136ec204 SW |
312 | if (depfile) { |
313 | fputc('\n', depfile); | |
314 | fclose(depfile); | |
315 | } | |
316 | ||
ed95d745 | 317 | if (cmdline_boot_cpuid != -1) |
6f05afcb RH |
318 | dti->boot_cpuid_phys = cmdline_boot_cpuid; |
319 | ||
320 | fill_fullpaths(dti->dt, ""); | |
321 | process_checks(force, dti); | |
322 | ||
323 | /* on a plugin, generate by default */ | |
324 | if (dti->dtsflags & DTSF_PLUGIN) { | |
325 | generate_fixups = 1; | |
326 | } | |
a4da2e3e | 327 | |
6f05afcb RH |
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 | } | |
a4da2e3e | 338 | |
658f29a5 | 339 | if (sort) |
6f05afcb | 340 | sort_tree(dti); |
a4da2e3e DG |
341 | |
342 | if (streq(outname, "-")) { | |
343 | outf = stdout; | |
344 | } else { | |
47605971 | 345 | outf = fopen(outname, "wb"); |
a4da2e3e DG |
346 | if (! outf) |
347 | die("Couldn't open output file %s: %s\n", | |
348 | outname, strerror(errno)); | |
349 | } | |
350 | ||
351 | if (streq(outform, "dts")) { | |
6f05afcb | 352 | dt_to_source(outf, dti); |
a4da2e3e | 353 | } else if (streq(outform, "dtb")) { |
6f05afcb | 354 | dt_to_blob(outf, dti, outversion); |
a4da2e3e | 355 | } else if (streq(outform, "asm")) { |
6f05afcb | 356 | dt_to_asm(outf, dti, outversion); |
a4da2e3e DG |
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 | } |