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.
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.
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
27 extern int yylex(void);
28 extern void yyerror(char const *s);
29 #define ERROR(loc, ...) \
31 srcpos_error((loc), "Error", __VA_ARGS__); \
32 treesource_error = true; \
35 extern struct dt_info *parser_output;
36 extern bool treesource_error;
50 struct property *prop;
51 struct property *proplist;
53 struct node *nodelist;
54 struct reserve_info *re;
62 %token DT_LSHIFT DT_RSHIFT DT_LE DT_GE DT_EQ DT_NE DT_AND DT_OR
67 %token <propnodename> DT_PROPNODENAME
68 %token <integer> DT_LITERAL
69 %token <integer> DT_CHAR_LITERAL
71 %token <data> DT_STRING
72 %token <labelref> DT_LABEL
73 %token <labelref> DT_REF
77 %type <data> propdataprefix
81 %type <re> memreserves
82 %type <array> arrayprefix
83 %type <data> bytestring
85 %type <proplist> proplist
87 %type <node> devicetree
90 %type <nodelist> subnodes
92 %type <integer> integer_prim
93 %type <integer> integer_unary
94 %type <integer> integer_mul
95 %type <integer> integer_add
96 %type <integer> integer_shift
97 %type <integer> integer_rela
98 %type <integer> integer_eq
99 %type <integer> integer_bitand
100 %type <integer> integer_bitxor
101 %type <integer> integer_bitor
102 %type <integer> integer_and
103 %type <integer> integer_or
104 %type <integer> integer_trinary
105 %type <integer> integer_expr
110 headers memreserves devicetree
112 parser_output = build_dt_info($1, $2, $3,
113 guess_boot_cpuid($3));
122 | DT_V1 ';' DT_PLUGIN ';'
124 $$ = DTSF_V1 | DTSF_PLUGIN;
133 ERROR(&@2, "Header flags don't match earlier ones");
143 | memreserve memreserves
145 $$ = chain_reserve_entry($1, $2);
150 DT_MEMRESERVE integer_prim integer_prim ';'
152 $$ = build_reserve_entry($2, $3);
154 | DT_LABEL memreserve
156 add_label(&$2->labels, $1);
164 $$ = name_node($2, "");
166 | devicetree '/' nodedef
168 $$ = merge_nodes($1, $3);
173 * We rely on the rule being always:
174 * versioninfo plugindecl memreserves devicetree
175 * so $-1 is what we want (plugindecl)
177 if (!($<flags>-1 & DTSF_PLUGIN))
178 ERROR(&@2, "Label or path %s not found", $1);
179 $$ = add_orphan_node(name_node(build_node(NULL, NULL), ""), $2, $1);
181 | devicetree DT_LABEL DT_REF nodedef
183 struct node *target = get_node_by_ref($1, $3);
186 add_label(&target->labels, $2);
187 merge_nodes(target, $4);
189 ERROR(&@3, "Label or path %s not found", $3);
192 | devicetree DT_REF nodedef
195 * We rely on the rule being always:
196 * versioninfo plugindecl memreserves devicetree
197 * so $-1 is what we want (plugindecl)
199 if ($<flags>-1 & DTSF_PLUGIN) {
200 add_orphan_node($1, $3, $2);
202 struct node *target = get_node_by_ref($1, $2);
205 merge_nodes(target, $3);
207 ERROR(&@2, "Label or path %s not found", $2);
211 | devicetree DT_DEL_NODE DT_REF ';'
213 struct node *target = get_node_by_ref($1, $3);
218 ERROR(&@3, "Label or path %s not found", $3);
223 | devicetree DT_OMIT_NO_REF DT_REF ';'
225 struct node *target = get_node_by_ref($1, $3);
228 omit_node_if_unused(target);
230 ERROR(&@3, "Label or path %s not found", $3);
238 '{' proplist subnodes '}' ';'
240 $$ = build_node($2, $3);
251 $$ = chain_property($2, $1);
256 DT_PROPNODENAME '=' propdata ';'
258 $$ = build_property($1, $3);
260 | DT_PROPNODENAME ';'
262 $$ = build_property($1, empty_data);
264 | DT_DEL_PROP DT_PROPNODENAME ';'
266 $$ = build_property_delete($2);
270 add_label(&$2->labels, $1);
276 propdataprefix DT_STRING
278 $$ = data_merge($1, $2);
280 | propdataprefix arrayprefix '>'
282 $$ = data_merge($1, $2.data);
284 | propdataprefix '[' bytestring ']'
286 $$ = data_merge($1, $3);
288 | propdataprefix DT_REF
290 $$ = data_add_marker($1, REF_PATH, $2);
292 | propdataprefix DT_INCBIN '(' DT_STRING ',' integer_prim ',' integer_prim ')'
294 FILE *f = srcfile_relative_open($4.val, NULL);
298 if (fseek(f, $6, SEEK_SET) != 0)
299 die("Couldn't seek to offset %llu in \"%s\": %s",
300 (unsigned long long)$6, $4.val,
303 d = data_copy_file(f, $8);
305 $$ = data_merge($1, d);
308 | propdataprefix DT_INCBIN '(' DT_STRING ')'
310 FILE *f = srcfile_relative_open($4.val, NULL);
311 struct data d = empty_data;
313 d = data_copy_file(f, -1);
315 $$ = data_merge($1, d);
320 $$ = data_add_marker($1, LABEL, $2);
333 | propdataprefix DT_LABEL
335 $$ = data_add_marker($1, LABEL, $2);
340 DT_BITS DT_LITERAL '<'
342 unsigned long long bits;
346 if ((bits != 8) && (bits != 16) &&
347 (bits != 32) && (bits != 64)) {
348 ERROR(&@2, "Array elements must be"
349 " 8, 16, 32 or 64-bits");
353 $$.data = empty_data;
358 $$.data = empty_data;
361 | arrayprefix integer_prim
364 uint64_t mask = (1ULL << $1.bits) - 1;
366 * Bits above mask must either be all zero
367 * (positive within range of mask) or all one
368 * (negative and sign-extended). The second
369 * condition is true if when we set all bits
370 * within the mask to one (i.e. | in the
371 * mask), all bits are one.
373 if (($2 > mask) && (($2 | mask) != -1ULL))
374 ERROR(&@2, "Value out of range for"
375 " %d-bit array element", $1.bits);
378 $$.data = data_append_integer($1.data, $2, $1.bits);
382 uint64_t val = ~0ULL >> (64 - $1.bits);
385 $1.data = data_add_marker($1.data,
389 ERROR(&@2, "References are only allowed in "
390 "arrays with 32-bit elements.");
392 $$.data = data_append_integer($1.data, val, $1.bits);
394 | arrayprefix DT_LABEL
396 $$.data = data_add_marker($1.data, LABEL, $2);
403 | '(' integer_expr ')'
415 | integer_or '?' integer_expr ':' integer_trinary { $$ = $1 ? $3 : $5; }
420 | integer_or DT_OR integer_and { $$ = $1 || $3; }
425 | integer_and DT_AND integer_bitor { $$ = $1 && $3; }
430 | integer_bitor '|' integer_bitxor { $$ = $1 | $3; }
435 | integer_bitxor '^' integer_bitand { $$ = $1 ^ $3; }
440 | integer_bitand '&' integer_eq { $$ = $1 & $3; }
445 | integer_eq DT_EQ integer_rela { $$ = $1 == $3; }
446 | integer_eq DT_NE integer_rela { $$ = $1 != $3; }
451 | integer_rela '<' integer_shift { $$ = $1 < $3; }
452 | integer_rela '>' integer_shift { $$ = $1 > $3; }
453 | integer_rela DT_LE integer_shift { $$ = $1 <= $3; }
454 | integer_rela DT_GE integer_shift { $$ = $1 >= $3; }
458 integer_shift DT_LSHIFT integer_add { $$ = $1 << $3; }
459 | integer_shift DT_RSHIFT integer_add { $$ = $1 >> $3; }
464 integer_add '+' integer_mul { $$ = $1 + $3; }
465 | integer_add '-' integer_mul { $$ = $1 - $3; }
470 integer_mul '*' integer_unary { $$ = $1 * $3; }
471 | integer_mul '/' integer_unary
476 ERROR(&@$, "Division by zero");
480 | integer_mul '%' integer_unary
485 ERROR(&@$, "Division by zero");
494 | '-' integer_unary { $$ = -$2; }
495 | '~' integer_unary { $$ = ~$2; }
496 | '!' integer_unary { $$ = !$2; }
506 $$ = data_append_byte($1, $2);
508 | bytestring DT_LABEL
510 $$ = data_add_marker($1, LABEL, $2);
521 $$ = chain_node($1, $2);
525 ERROR(&@2, "Properties must precede subnodes");
531 DT_PROPNODENAME nodedef
533 $$ = name_node($2, $1);
535 | DT_DEL_NODE DT_PROPNODENAME ';'
537 $$ = name_node(build_node_delete(), $2);
539 | DT_OMIT_NO_REF subnode
541 $$ = omit_node_if_unused($2);
545 add_label(&$2->labels, $1);
552 void yyerror(char const *s)
554 ERROR(&yylloc, "%s", s);