aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/boot/dtc-src/dtc-parser.y
diff options
context:
space:
mode:
authorDavid Gibson <david@gibson.dropbear.id.au>2009-04-30 01:25:53 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-05-02 19:52:26 -0400
commit9fffb55f66127b52c937ede5196ebfa0c0d50bce (patch)
tree11664fb82734ba8dcde9556b8d47e780451a740a /arch/powerpc/boot/dtc-src/dtc-parser.y
parentafc1e702e8e8355faa712d4e90d9afe26a4995a5 (diff)
Move dtc and libfdt sources from arch/powerpc/boot to scripts/dtc
The powerpc kernel always requires an Open Firmware like device tree to supply device information. On systems without OF, this comes from a flattened device tree blob. This blob is usually generated by dtc, a tool which compiles a text description of the device tree into the flattened format used by the kernel. Sometimes, the bootwrapper makes small changes to the pre-compiled device tree blob (e.g. filling in the size of RAM). To do this it uses the libfdt library. Because these are only used on powerpc, the code for both these tools is included under arch/powerpc/boot (these were imported and are periodically updated from the upstream dtc tree). However, the microblaze architecture, currently being prepared for merging to mainline also uses dtc to produce device tree blobs. A few other archs have also mentioned some interest in using dtc. Therefore, this patch moves dtc and libfdt from arch/powerpc into scripts, where it can be used by any architecture. The vast bulk of this patch is a literal move, the rest is adjusting the various Makefiles to use dtc and libfdt correctly from their new locations. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/powerpc/boot/dtc-src/dtc-parser.y')
-rw-r--r--arch/powerpc/boot/dtc-src/dtc-parser.y379
1 files changed, 0 insertions, 379 deletions
diff --git a/arch/powerpc/boot/dtc-src/dtc-parser.y b/arch/powerpc/boot/dtc-src/dtc-parser.y
deleted file mode 100644
index b2ab562420ea..000000000000
--- a/arch/powerpc/boot/dtc-src/dtc-parser.y
+++ /dev/null
@@ -1,379 +0,0 @@
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
21%locations
22
23%{
24#include <stdio.h>
25
26#include "dtc.h"
27#include "srcpos.h"
28
29extern int yylex(void);
30
31extern struct boot_info *the_boot_info;
32extern int treesource_error;
33
34static unsigned long long eval_literal(const char *s, int base, int bits);
35%}
36
37%union {
38 char *propnodename;
39 char *literal;
40 char *labelref;
41 unsigned int cbase;
42 uint8_t byte;
43 struct data data;
44
45 uint64_t addr;
46 cell_t cell;
47 struct property *prop;
48 struct property *proplist;
49 struct node *node;
50 struct node *nodelist;
51 struct reserve_info *re;
52}
53
54%token DT_V1
55%token DT_MEMRESERVE
56%token <propnodename> DT_PROPNODENAME
57%token <literal> DT_LITERAL
58%token <literal> DT_LEGACYLITERAL
59%token <cbase> DT_BASE
60%token <byte> DT_BYTE
61%token <data> DT_STRING
62%token <labelref> DT_LABEL
63%token <labelref> DT_REF
64%token DT_INCBIN
65
66%type <data> propdata
67%type <data> propdataprefix
68%type <re> memreserve
69%type <re> memreserves
70%type <re> v0_memreserve
71%type <re> v0_memreserves
72%type <addr> addr
73%type <data> celllist
74%type <cbase> cellbase
75%type <cell> cellval
76%type <data> bytestring
77%type <prop> propdef
78%type <proplist> proplist
79
80%type <node> devicetree
81%type <node> nodedef
82%type <node> subnode
83%type <nodelist> subnodes
84%type <labelref> label
85
86%%
87
88sourcefile:
89 DT_V1 ';' memreserves devicetree
90 {
91 the_boot_info = build_boot_info($3, $4, 0);
92 }
93 | v0_memreserves devicetree
94 {
95 the_boot_info = build_boot_info($1, $2, 0);
96 }
97 ;
98
99memreserves:
100 /* empty */
101 {
102 $$ = NULL;
103 }
104 | memreserve memreserves
105 {
106 $$ = chain_reserve_entry($1, $2);
107 }
108 ;
109
110memreserve:
111 label DT_MEMRESERVE addr addr ';'
112 {
113 $$ = build_reserve_entry($3, $4, $1);
114 }
115 ;
116
117v0_memreserves:
118 /* empty */
119 {
120 $$ = NULL;
121 }
122 | v0_memreserve v0_memreserves
123 {
124 $$ = chain_reserve_entry($1, $2);
125 };
126 ;
127
128v0_memreserve:
129 memreserve
130 {
131 $$ = $1;
132 }
133 | label DT_MEMRESERVE addr '-' addr ';'
134 {
135 $$ = build_reserve_entry($3, $5 - $3 + 1, $1);
136 }
137 ;
138
139addr:
140 DT_LITERAL
141 {
142 $$ = eval_literal($1, 0, 64);
143 }
144 | DT_LEGACYLITERAL
145 {
146 $$ = eval_literal($1, 16, 64);
147 }
148 ;
149
150devicetree:
151 '/' nodedef
152 {
153 $$ = name_node($2, "", NULL);
154 }
155 ;
156
157nodedef:
158 '{' proplist subnodes '}' ';'
159 {
160 $$ = build_node($2, $3);
161 }
162 ;
163
164proplist:
165 /* empty */
166 {
167 $$ = NULL;
168 }
169 | proplist propdef
170 {
171 $$ = chain_property($2, $1);
172 }
173 ;
174
175propdef:
176 label DT_PROPNODENAME '=' propdata ';'
177 {
178 $$ = build_property($2, $4, $1);
179 }
180 | label DT_PROPNODENAME ';'
181 {
182 $$ = build_property($2, empty_data, $1);
183 }
184 ;
185
186propdata:
187 propdataprefix DT_STRING
188 {
189 $$ = data_merge($1, $2);
190 }
191 | propdataprefix '<' celllist '>'
192 {
193 $$ = data_merge($1, $3);
194 }
195 | propdataprefix '[' bytestring ']'
196 {
197 $$ = data_merge($1, $3);
198 }
199 | propdataprefix DT_REF
200 {
201 $$ = data_add_marker($1, REF_PATH, $2);
202 }
203 | propdataprefix DT_INCBIN '(' DT_STRING ',' addr ',' addr ')'
204 {
205 struct search_path path = { srcpos_file->dir, NULL, NULL };
206 struct dtc_file *file = dtc_open_file($4.val, &path);
207 struct data d = empty_data;
208
209 if ($6 != 0)
210 if (fseek(file->file, $6, SEEK_SET) != 0)
211 yyerrorf("Couldn't seek to offset %llu in \"%s\": %s",
212 (unsigned long long)$6,
213 $4.val, strerror(errno));
214
215 d = data_copy_file(file->file, $8);
216
217 $$ = data_merge($1, d);
218 dtc_close_file(file);
219 }
220 | propdataprefix DT_INCBIN '(' DT_STRING ')'
221 {
222 struct search_path path = { srcpos_file->dir, NULL, NULL };
223 struct dtc_file *file = dtc_open_file($4.val, &path);
224 struct data d = empty_data;
225
226 d = data_copy_file(file->file, -1);
227
228 $$ = data_merge($1, d);
229 dtc_close_file(file);
230 }
231 | propdata DT_LABEL
232 {
233 $$ = data_add_marker($1, LABEL, $2);
234 }
235 ;
236
237propdataprefix:
238 /* empty */
239 {
240 $$ = empty_data;
241 }
242 | propdata ','
243 {
244 $$ = $1;
245 }
246 | propdataprefix DT_LABEL
247 {
248 $$ = data_add_marker($1, LABEL, $2);
249 }
250 ;
251
252celllist:
253 /* empty */
254 {
255 $$ = empty_data;
256 }
257 | celllist cellval
258 {
259 $$ = data_append_cell($1, $2);
260 }
261 | celllist DT_REF
262 {
263 $$ = data_append_cell(data_add_marker($1, REF_PHANDLE,
264 $2), -1);
265 }
266 | celllist DT_LABEL
267 {
268 $$ = data_add_marker($1, LABEL, $2);
269 }
270 ;
271
272cellbase:
273 /* empty */
274 {
275 $$ = 16;
276 }
277 | DT_BASE
278 ;
279
280cellval:
281 DT_LITERAL
282 {
283 $$ = eval_literal($1, 0, 32);
284 }
285 | cellbase DT_LEGACYLITERAL
286 {
287 $$ = eval_literal($2, $1, 32);
288 }
289 ;
290
291bytestring:
292 /* empty */
293 {
294 $$ = empty_data;
295 }
296 | bytestring DT_BYTE
297 {
298 $$ = data_append_byte($1, $2);
299 }
300 | bytestring DT_LABEL
301 {
302 $$ = data_add_marker($1, LABEL, $2);
303 }
304 ;
305
306subnodes:
307 /* empty */
308 {
309 $$ = NULL;
310 }
311 | subnode subnodes
312 {
313 $$ = chain_node($1, $2);
314 }
315 | subnode propdef
316 {
317 yyerror("syntax error: properties must precede subnodes");
318 YYERROR;
319 }
320 ;
321
322subnode:
323 label DT_PROPNODENAME nodedef
324 {
325 $$ = name_node($3, $2, $1);
326 }
327 ;
328
329label:
330 /* empty */
331 {
332 $$ = NULL;
333 }
334 | DT_LABEL
335 {
336 $$ = $1;
337 }
338 ;
339
340%%
341
342void yyerrorf(char const *s, ...)
343{
344 const char *fname = srcpos_file ? srcpos_file->name : "<no-file>";
345 va_list va;
346 va_start(va, s);
347
348 if (strcmp(fname, "-") == 0)
349 fname = "stdin";
350
351 fprintf(stderr, "%s:%d ", fname, yylloc.first_line);
352 vfprintf(stderr, s, va);
353 fprintf(stderr, "\n");
354
355 treesource_error = 1;
356 va_end(va);
357}
358
359void yyerror (char const *s)
360{
361 yyerrorf("%s", s);
362}
363
364static unsigned long long eval_literal(const char *s, int base, int bits)
365{
366 unsigned long long val;
367 char *e;
368
369 errno = 0;
370 val = strtoull(s, &e, base);
371 if (*e)
372 yyerror("bad characters in literal");
373 else if ((errno == ERANGE)
374 || ((bits < 64) && (val >= (1ULL << bits))))
375 yyerror("literal out of range");
376 else if (errno != 0)
377 yyerror("bad literal");
378 return val;
379}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-24 12:42:49 -0500