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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 | */ | |
a4da2e3e | 20 | %{ |
ed95d745 | 21 | #include <stdio.h> |
6f05afcb | 22 | #include <inttypes.h> |
ed95d745 | 23 | |
a4da2e3e DG |
24 | #include "dtc.h" |
25 | #include "srcpos.h" | |
26 | ||
ed95d745 | 27 | extern int yylex(void); |
658f29a5 | 28 | extern void yyerror(char const *s); |
47605971 RH |
29 | #define ERROR(loc, ...) \ |
30 | do { \ | |
31 | srcpos_error((loc), "Error", __VA_ARGS__); \ | |
32 | treesource_error = true; \ | |
33 | } while (0) | |
a4da2e3e | 34 | |
6f05afcb | 35 | extern struct dt_info *parser_output; |
47605971 | 36 | extern bool treesource_error; |
a4da2e3e DG |
37 | %} |
38 | ||
39 | %union { | |
40 | char *propnodename; | |
a4da2e3e | 41 | char *labelref; |
ed95d745 | 42 | uint8_t byte; |
a4da2e3e DG |
43 | struct data data; |
44 | ||
cd296721 SW |
45 | struct { |
46 | struct data data; | |
47 | int bits; | |
48 | } array; | |
49 | ||
a4da2e3e DG |
50 | struct property *prop; |
51 | struct property *proplist; | |
52 | struct node *node; | |
53 | struct node *nodelist; | |
54 | struct reserve_info *re; | |
cd296721 | 55 | uint64_t integer; |
6f05afcb | 56 | unsigned int flags; |
a4da2e3e DG |
57 | } |
58 | ||
59 | %token DT_V1 | |
6f05afcb | 60 | %token DT_PLUGIN |
a4da2e3e | 61 | %token DT_MEMRESERVE |
cd296721 SW |
62 | %token DT_LSHIFT DT_RSHIFT DT_LE DT_GE DT_EQ DT_NE DT_AND DT_OR |
63 | %token DT_BITS | |
64 | %token DT_DEL_PROP | |
65 | %token DT_DEL_NODE | |
a4da2e3e | 66 | %token <propnodename> DT_PROPNODENAME |
47605971 RH |
67 | %token <integer> DT_LITERAL |
68 | %token <integer> DT_CHAR_LITERAL | |
a4da2e3e DG |
69 | %token <byte> DT_BYTE |
70 | %token <data> DT_STRING | |
71 | %token <labelref> DT_LABEL | |
72 | %token <labelref> DT_REF | |
ed95d745 | 73 | %token DT_INCBIN |
a4da2e3e DG |
74 | |
75 | %type <data> propdata | |
76 | %type <data> propdataprefix | |
6f05afcb RH |
77 | %type <flags> header |
78 | %type <flags> headers | |
a4da2e3e DG |
79 | %type <re> memreserve |
80 | %type <re> memreserves | |
cd296721 | 81 | %type <array> arrayprefix |
a4da2e3e DG |
82 | %type <data> bytestring |
83 | %type <prop> propdef | |
84 | %type <proplist> proplist | |
85 | ||
86 | %type <node> devicetree | |
87 | %type <node> nodedef | |
88 | %type <node> subnode | |
89 | %type <nodelist> subnodes | |
a4da2e3e | 90 | |
cd296721 SW |
91 | %type <integer> integer_prim |
92 | %type <integer> integer_unary | |
93 | %type <integer> integer_mul | |
94 | %type <integer> integer_add | |
95 | %type <integer> integer_shift | |
96 | %type <integer> integer_rela | |
97 | %type <integer> integer_eq | |
98 | %type <integer> integer_bitand | |
99 | %type <integer> integer_bitxor | |
100 | %type <integer> integer_bitor | |
101 | %type <integer> integer_and | |
102 | %type <integer> integer_or | |
103 | %type <integer> integer_trinary | |
104 | %type <integer> integer_expr | |
105 | ||
a4da2e3e DG |
106 | %% |
107 | ||
108 | sourcefile: | |
6f05afcb | 109 | headers memreserves devicetree |
a4da2e3e | 110 | { |
6f05afcb RH |
111 | parser_output = build_dt_info($1, $2, $3, |
112 | guess_boot_cpuid($3)); | |
113 | } | |
114 | ; | |
115 | ||
116 | header: | |
117 | DT_V1 ';' | |
118 | { | |
119 | $$ = DTSF_V1; | |
120 | } | |
121 | | DT_V1 ';' DT_PLUGIN ';' | |
122 | { | |
123 | $$ = DTSF_V1 | DTSF_PLUGIN; | |
124 | } | |
125 | ; | |
126 | ||
127 | headers: | |
128 | header | |
129 | | header headers | |
130 | { | |
131 | if ($2 != $1) | |
132 | ERROR(&@2, "Header flags don't match earlier ones"); | |
133 | $$ = $1; | |
a4da2e3e DG |
134 | } |
135 | ; | |
136 | ||
137 | memreserves: | |
138 | /* empty */ | |
139 | { | |
140 | $$ = NULL; | |
141 | } | |
142 | | memreserve memreserves | |
143 | { | |
144 | $$ = chain_reserve_entry($1, $2); | |
145 | } | |
146 | ; | |
147 | ||
148 | memreserve: | |
cd296721 | 149 | DT_MEMRESERVE integer_prim integer_prim ';' |
a4da2e3e | 150 | { |
658f29a5 | 151 | $$ = build_reserve_entry($2, $3); |
a4da2e3e | 152 | } |
658f29a5 | 153 | | DT_LABEL memreserve |
a4da2e3e | 154 | { |
658f29a5 JB |
155 | add_label(&$2->labels, $1); |
156 | $$ = $2; | |
a4da2e3e DG |
157 | } |
158 | ; | |
159 | ||
a4da2e3e DG |
160 | devicetree: |
161 | '/' nodedef | |
162 | { | |
658f29a5 JB |
163 | $$ = name_node($2, ""); |
164 | } | |
165 | | devicetree '/' nodedef | |
166 | { | |
167 | $$ = merge_nodes($1, $3); | |
168 | } | |
47605971 RH |
169 | |
170 | | devicetree DT_LABEL DT_REF nodedef | |
171 | { | |
172 | struct node *target = get_node_by_ref($1, $3); | |
173 | ||
89d12310 RH |
174 | if (target) { |
175 | add_label(&target->labels, $2); | |
47605971 | 176 | merge_nodes(target, $4); |
89d12310 | 177 | } else |
47605971 RH |
178 | ERROR(&@3, "Label or path %s not found", $3); |
179 | $$ = $1; | |
180 | } | |
658f29a5 JB |
181 | | devicetree DT_REF nodedef |
182 | { | |
183 | struct node *target = get_node_by_ref($1, $2); | |
184 | ||
185 | if (target) | |
186 | merge_nodes(target, $3); | |
187 | else | |
47605971 | 188 | ERROR(&@2, "Label or path %s not found", $2); |
658f29a5 | 189 | $$ = $1; |
a4da2e3e | 190 | } |
cd296721 SW |
191 | | devicetree DT_DEL_NODE DT_REF ';' |
192 | { | |
193 | struct node *target = get_node_by_ref($1, $3); | |
194 | ||
47605971 | 195 | if (target) |
cd296721 | 196 | delete_node(target); |
47605971 RH |
197 | else |
198 | ERROR(&@3, "Label or path %s not found", $3); | |
199 | ||
cd296721 SW |
200 | |
201 | $$ = $1; | |
202 | } | |
a4da2e3e DG |
203 | ; |
204 | ||
205 | nodedef: | |
206 | '{' proplist subnodes '}' ';' | |
207 | { | |
208 | $$ = build_node($2, $3); | |
209 | } | |
210 | ; | |
211 | ||
212 | proplist: | |
213 | /* empty */ | |
214 | { | |
215 | $$ = NULL; | |
216 | } | |
217 | | proplist propdef | |
218 | { | |
219 | $$ = chain_property($2, $1); | |
220 | } | |
221 | ; | |
222 | ||
223 | propdef: | |
658f29a5 JB |
224 | DT_PROPNODENAME '=' propdata ';' |
225 | { | |
226 | $$ = build_property($1, $3); | |
227 | } | |
228 | | DT_PROPNODENAME ';' | |
a4da2e3e | 229 | { |
658f29a5 | 230 | $$ = build_property($1, empty_data); |
a4da2e3e | 231 | } |
cd296721 SW |
232 | | DT_DEL_PROP DT_PROPNODENAME ';' |
233 | { | |
234 | $$ = build_property_delete($2); | |
235 | } | |
658f29a5 | 236 | | DT_LABEL propdef |
a4da2e3e | 237 | { |
658f29a5 JB |
238 | add_label(&$2->labels, $1); |
239 | $$ = $2; | |
a4da2e3e DG |
240 | } |
241 | ; | |
242 | ||
243 | propdata: | |
244 | propdataprefix DT_STRING | |
245 | { | |
246 | $$ = data_merge($1, $2); | |
247 | } | |
cd296721 | 248 | | propdataprefix arrayprefix '>' |
a4da2e3e | 249 | { |
cd296721 | 250 | $$ = data_merge($1, $2.data); |
a4da2e3e DG |
251 | } |
252 | | propdataprefix '[' bytestring ']' | |
253 | { | |
254 | $$ = data_merge($1, $3); | |
255 | } | |
256 | | propdataprefix DT_REF | |
257 | { | |
258 | $$ = data_add_marker($1, REF_PATH, $2); | |
259 | } | |
cd296721 | 260 | | propdataprefix DT_INCBIN '(' DT_STRING ',' integer_prim ',' integer_prim ')' |
ed95d745 | 261 | { |
658f29a5 JB |
262 | FILE *f = srcfile_relative_open($4.val, NULL); |
263 | struct data d; | |
ed95d745 DG |
264 | |
265 | if ($6 != 0) | |
658f29a5 | 266 | if (fseek(f, $6, SEEK_SET) != 0) |
47605971 RH |
267 | die("Couldn't seek to offset %llu in \"%s\": %s", |
268 | (unsigned long long)$6, $4.val, | |
269 | strerror(errno)); | |
ed95d745 | 270 | |
658f29a5 | 271 | d = data_copy_file(f, $8); |
ed95d745 DG |
272 | |
273 | $$ = data_merge($1, d); | |
658f29a5 | 274 | fclose(f); |
ed95d745 DG |
275 | } |
276 | | propdataprefix DT_INCBIN '(' DT_STRING ')' | |
277 | { | |
658f29a5 | 278 | FILE *f = srcfile_relative_open($4.val, NULL); |
ed95d745 DG |
279 | struct data d = empty_data; |
280 | ||
658f29a5 | 281 | d = data_copy_file(f, -1); |
ed95d745 DG |
282 | |
283 | $$ = data_merge($1, d); | |
658f29a5 | 284 | fclose(f); |
ed95d745 | 285 | } |
a4da2e3e DG |
286 | | propdata DT_LABEL |
287 | { | |
288 | $$ = data_add_marker($1, LABEL, $2); | |
289 | } | |
290 | ; | |
291 | ||
292 | propdataprefix: | |
293 | /* empty */ | |
294 | { | |
295 | $$ = empty_data; | |
296 | } | |
297 | | propdata ',' | |
298 | { | |
299 | $$ = $1; | |
300 | } | |
301 | | propdataprefix DT_LABEL | |
302 | { | |
303 | $$ = data_add_marker($1, LABEL, $2); | |
304 | } | |
305 | ; | |
306 | ||
cd296721 SW |
307 | arrayprefix: |
308 | DT_BITS DT_LITERAL '<' | |
309 | { | |
47605971 RH |
310 | unsigned long long bits; |
311 | ||
312 | bits = $2; | |
313 | ||
314 | if ((bits != 8) && (bits != 16) && | |
315 | (bits != 32) && (bits != 64)) { | |
316 | ERROR(&@2, "Array elements must be" | |
317 | " 8, 16, 32 or 64-bits"); | |
318 | bits = 32; | |
cd296721 | 319 | } |
47605971 RH |
320 | |
321 | $$.data = empty_data; | |
322 | $$.bits = bits; | |
cd296721 SW |
323 | } |
324 | | '<' | |
325 | { | |
326 | $$.data = empty_data; | |
327 | $$.bits = 32; | |
328 | } | |
329 | | arrayprefix integer_prim | |
330 | { | |
331 | if ($1.bits < 64) { | |
332 | uint64_t mask = (1ULL << $1.bits) - 1; | |
333 | /* | |
334 | * Bits above mask must either be all zero | |
335 | * (positive within range of mask) or all one | |
336 | * (negative and sign-extended). The second | |
337 | * condition is true if when we set all bits | |
338 | * within the mask to one (i.e. | in the | |
339 | * mask), all bits are one. | |
340 | */ | |
341 | if (($2 > mask) && (($2 | mask) != -1ULL)) | |
47605971 RH |
342 | ERROR(&@2, "Value out of range for" |
343 | " %d-bit array element", $1.bits); | |
cd296721 SW |
344 | } |
345 | ||
346 | $$.data = data_append_integer($1.data, $2, $1.bits); | |
347 | } | |
348 | | arrayprefix DT_REF | |
349 | { | |
350 | uint64_t val = ~0ULL >> (64 - $1.bits); | |
351 | ||
352 | if ($1.bits == 32) | |
353 | $1.data = data_add_marker($1.data, | |
354 | REF_PHANDLE, | |
355 | $2); | |
356 | else | |
47605971 | 357 | ERROR(&@2, "References are only allowed in " |
cd296721 SW |
358 | "arrays with 32-bit elements."); |
359 | ||
360 | $$.data = data_append_integer($1.data, val, $1.bits); | |
361 | } | |
362 | | arrayprefix DT_LABEL | |
a4da2e3e | 363 | { |
cd296721 | 364 | $$.data = data_add_marker($1.data, LABEL, $2); |
a4da2e3e | 365 | } |
cd296721 SW |
366 | ; |
367 | ||
368 | integer_prim: | |
369 | DT_LITERAL | |
cd296721 | 370 | | DT_CHAR_LITERAL |
cd296721 | 371 | | '(' integer_expr ')' |
a4da2e3e | 372 | { |
cd296721 | 373 | $$ = $2; |
a4da2e3e DG |
374 | } |
375 | ; | |
376 | ||
cd296721 SW |
377 | integer_expr: |
378 | integer_trinary | |
379 | ; | |
380 | ||
381 | integer_trinary: | |
382 | integer_or | |
383 | | integer_or '?' integer_expr ':' integer_trinary { $$ = $1 ? $3 : $5; } | |
384 | ; | |
385 | ||
386 | integer_or: | |
387 | integer_and | |
388 | | integer_or DT_OR integer_and { $$ = $1 || $3; } | |
389 | ; | |
390 | ||
391 | integer_and: | |
392 | integer_bitor | |
393 | | integer_and DT_AND integer_bitor { $$ = $1 && $3; } | |
394 | ; | |
395 | ||
396 | integer_bitor: | |
397 | integer_bitxor | |
398 | | integer_bitor '|' integer_bitxor { $$ = $1 | $3; } | |
399 | ; | |
400 | ||
401 | integer_bitxor: | |
402 | integer_bitand | |
403 | | integer_bitxor '^' integer_bitand { $$ = $1 ^ $3; } | |
404 | ; | |
405 | ||
406 | integer_bitand: | |
407 | integer_eq | |
408 | | integer_bitand '&' integer_eq { $$ = $1 & $3; } | |
409 | ; | |
410 | ||
411 | integer_eq: | |
412 | integer_rela | |
413 | | integer_eq DT_EQ integer_rela { $$ = $1 == $3; } | |
414 | | integer_eq DT_NE integer_rela { $$ = $1 != $3; } | |
415 | ; | |
416 | ||
417 | integer_rela: | |
418 | integer_shift | |
419 | | integer_rela '<' integer_shift { $$ = $1 < $3; } | |
420 | | integer_rela '>' integer_shift { $$ = $1 > $3; } | |
421 | | integer_rela DT_LE integer_shift { $$ = $1 <= $3; } | |
422 | | integer_rela DT_GE integer_shift { $$ = $1 >= $3; } | |
423 | ; | |
424 | ||
425 | integer_shift: | |
426 | integer_shift DT_LSHIFT integer_add { $$ = $1 << $3; } | |
427 | | integer_shift DT_RSHIFT integer_add { $$ = $1 >> $3; } | |
428 | | integer_add | |
429 | ; | |
430 | ||
431 | integer_add: | |
432 | integer_add '+' integer_mul { $$ = $1 + $3; } | |
433 | | integer_add '-' integer_mul { $$ = $1 - $3; } | |
434 | | integer_mul | |
435 | ; | |
436 | ||
437 | integer_mul: | |
438 | integer_mul '*' integer_unary { $$ = $1 * $3; } | |
91feabc2 RH |
439 | | integer_mul '/' integer_unary |
440 | { | |
441 | if ($3 != 0) { | |
442 | $$ = $1 / $3; | |
443 | } else { | |
444 | ERROR(&@$, "Division by zero"); | |
445 | $$ = 0; | |
446 | } | |
447 | } | |
448 | | integer_mul '%' integer_unary | |
449 | { | |
450 | if ($3 != 0) { | |
451 | $$ = $1 % $3; | |
452 | } else { | |
453 | ERROR(&@$, "Division by zero"); | |
454 | $$ = 0; | |
455 | } | |
456 | } | |
cd296721 SW |
457 | | integer_unary |
458 | ; | |
459 | ||
460 | integer_unary: | |
461 | integer_prim | |
462 | | '-' integer_unary { $$ = -$2; } | |
463 | | '~' integer_unary { $$ = ~$2; } | |
464 | | '!' integer_unary { $$ = !$2; } | |
a4da2e3e DG |
465 | ; |
466 | ||
467 | bytestring: | |
468 | /* empty */ | |
469 | { | |
470 | $$ = empty_data; | |
471 | } | |
472 | | bytestring DT_BYTE | |
473 | { | |
474 | $$ = data_append_byte($1, $2); | |
475 | } | |
476 | | bytestring DT_LABEL | |
477 | { | |
478 | $$ = data_add_marker($1, LABEL, $2); | |
479 | } | |
480 | ; | |
481 | ||
482 | subnodes: | |
483 | /* empty */ | |
484 | { | |
485 | $$ = NULL; | |
486 | } | |
658f29a5 | 487 | | subnode subnodes |
a4da2e3e DG |
488 | { |
489 | $$ = chain_node($1, $2); | |
490 | } | |
491 | | subnode propdef | |
492 | { | |
47605971 | 493 | ERROR(&@2, "Properties must precede subnodes"); |
a4da2e3e DG |
494 | YYERROR; |
495 | } | |
496 | ; | |
497 | ||
498 | subnode: | |
658f29a5 | 499 | DT_PROPNODENAME nodedef |
a4da2e3e | 500 | { |
658f29a5 | 501 | $$ = name_node($2, $1); |
a4da2e3e | 502 | } |
cd296721 SW |
503 | | DT_DEL_NODE DT_PROPNODENAME ';' |
504 | { | |
505 | $$ = name_node(build_node_delete(), $2); | |
506 | } | |
658f29a5 | 507 | | DT_LABEL subnode |
a4da2e3e | 508 | { |
658f29a5 JB |
509 | add_label(&$2->labels, $1); |
510 | $$ = $2; | |
a4da2e3e DG |
511 | } |
512 | ; | |
513 | ||
514 | %% | |
515 | ||
47605971 | 516 | void yyerror(char const *s) |
cd296721 | 517 | { |
47605971 | 518 | ERROR(&yylloc, "%s", s); |
cd296721 | 519 | } |