]> git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_fdt.c
projects / people / ms / u-boot.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'master' of git://www.denx.de/git/u-boot-fdt
[people/ms/u-boot.git] / common / cmd_fdt.c
1 /*
2 * (C) Copyright 2007
3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
4 * Based on code written by:
5 * Pantelis Antoniou <pantelis.antoniou@gmail.com> and
6 * Matthew McClintock <msm@freescale.com>
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27 #include <common.h>
28 #include <command.h>
29 #include <linux/ctype.h>
30 #include <linux/types.h>
31 #include <asm/global_data.h>
32 #include <fdt.h>
33 #include <libfdt.h>
34 #include <fdt_support.h>
35
36 #define MAX_LEVEL 32 /* how deeply nested we will go */
37 #define SCRATCHPAD 1024 /* bytes of scratchpad memory */
38
39 /*
40 * Global data (for the gd->bd)
41 */
42 DECLARE_GLOBAL_DATA_PTR;
43
44 static int fdt_valid(void);
45 static int fdt_parse_prop(char *pathp, char *prop, char *newval,
46 char *data, int *len);
47 static int fdt_print(const char *pathp, char *prop, int depth);
48
49 /*
50 * Flattened Device Tree command, see the help for parameter definitions.
51 */
52 int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
53 {
54 if (argc < 2) {
55 printf ("Usage:\n%s\n", cmdtp->usage);
56 return 1;
57 }
58
59 /********************************************************************
60 * Set the address of the fdt
61 ********************************************************************/
62 if (argv[1][0] == 'a') {
63 /*
64 * Set the address [and length] of the fdt.
65 */
66 fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
67
68 if (!fdt_valid()) {
69 return 1;
70 }
71
72 if (argc >= 4) {
73 int len;
74 int err;
75 /*
76 * Optional new length
77 */
78 len = simple_strtoul(argv[3], NULL, 16);
79 if (len < fdt_totalsize(fdt)) {
80 printf ("New length %d < existing length %d, "
81 "ignoring.\n",
82 len, fdt_totalsize(fdt));
83 } else {
84 /*
85 * Open in place with a new length.
86 */
87 err = fdt_open_into(fdt, fdt, len);
88 if (err != 0) {
89 printf ("libfdt fdt_open_into(): %s\n",
90 fdt_strerror(err));
91 }
92 }
93 }
94
95 /********************************************************************
96 * Move the fdt
97 ********************************************************************/
98 } else if ((argv[1][0] == 'm') && (argv[1][1] == 'o')) {
99 struct fdt_header *newaddr;
100 int len;
101 int err;
102
103 if (argc < 4) {
104 printf ("Usage:\n%s\n", cmdtp->usage);
105 return 1;
106 }
107
108 /*
109 * Set the address and length of the fdt.
110 */
111 fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
112 if (!fdt_valid()) {
113 return 1;
114 }
115
116 newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
117
118 /*
119 * If the user specifies a length, use that. Otherwise use the
120 * current length.
121 */
122 if (argc <= 4) {
123 len = fdt_totalsize(fdt);
124 } else {
125 len = simple_strtoul(argv[4], NULL, 16);
126 if (len < fdt_totalsize(fdt)) {
127 printf ("New length 0x%X < existing length "
128 "0x%X, aborting.\n",
129 len, fdt_totalsize(fdt));
130 return 1;
131 }
132 }
133
134 /*
135 * Copy to the new location.
136 */
137 err = fdt_open_into(fdt, newaddr, len);
138 if (err != 0) {
139 printf ("libfdt fdt_open_into(): %s\n",
140 fdt_strerror(err));
141 return 1;
142 }
143 fdt = newaddr;
144
145 /********************************************************************
146 * Make a new node
147 ********************************************************************/
148 } else if ((argv[1][0] == 'm') && (argv[1][1] == 'k')) {
149 char *pathp; /* path */
150 char *nodep; /* new node to add */
151 int nodeoffset; /* node offset from libfdt */
152 int err;
153
154 /*
155 * Parameters: Node path, new node to be appended to the path.
156 */
157 if (argc < 4) {
158 printf ("Usage:\n%s\n", cmdtp->usage);
159 return 1;
160 }
161
162 pathp = argv[2];
163 nodep = argv[3];
164
165 nodeoffset = fdt_path_offset (fdt, pathp);
166 if (nodeoffset < 0) {
167 /*
168 * Not found or something else bad happened.
169 */
170 printf ("libfdt fdt_path_offset() returned %s\n",
171 fdt_strerror(nodeoffset));
172 return 1;
173 }
174 err = fdt_add_subnode(fdt, nodeoffset, nodep);
175 if (err < 0) {
176 printf ("libfdt fdt_add_subnode(): %s\n",
177 fdt_strerror(err));
178 return 1;
179 }
180
181 /********************************************************************
182 * Set the value of a property in the fdt.
183 ********************************************************************/
184 } else if (argv[1][0] == 's') {
185 char *pathp; /* path */
186 char *prop; /* property */
187 int nodeoffset; /* node offset from libfdt */
188 static char data[SCRATCHPAD]; /* storage for the property */
189 int len; /* new length of the property */
190 int ret; /* return value */
191
192 /*
193 * Parameters: Node path, property, optional value.
194 */
195 if (argc < 4) {
196 printf ("Usage:\n%s\n", cmdtp->usage);
197 return 1;
198 }
199
200 pathp = argv[2];
201 prop = argv[3];
202 if (argc == 4) {
203 len = 0;
204 } else {
205 ret = fdt_parse_prop(pathp, prop, argv[4], data, &len);
206 if (ret != 0)
207 return ret;
208 }
209
210 nodeoffset = fdt_path_offset (fdt, pathp);
211 if (nodeoffset < 0) {
212 /*
213 * Not found or something else bad happened.
214 */
215 printf ("libfdt fdt_path_offset() returned %s\n",
216 fdt_strerror(nodeoffset));
217 return 1;
218 }
219
220 ret = fdt_setprop(fdt, nodeoffset, prop, data, len);
221 if (ret < 0) {
222 printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
223 return 1;
224 }
225
226 /********************************************************************
227 * Print (recursive) / List (single level)
228 ********************************************************************/
229 } else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
230 int depth = MAX_LEVEL; /* how deep to print */
231 char *pathp; /* path */
232 char *prop; /* property */
233 int ret; /* return value */
234 static char root[2] = "/";
235
236 /*
237 * list is an alias for print, but limited to 1 level
238 */
239 if (argv[1][0] == 'l') {
240 depth = 1;
241 }
242
243 /*
244 * Get the starting path. The root node is an oddball,
245 * the offset is zero and has no name.
246 */
247 if (argc == 2)
248 pathp = root;
249 else
250 pathp = argv[2];
251 if (argc > 3)
252 prop = argv[3];
253 else
254 prop = NULL;
255
256 ret = fdt_print(pathp, prop, depth);
257 if (ret != 0)
258 return ret;
259
260 /********************************************************************
261 * Remove a property/node
262 ********************************************************************/
263 } else if ((argv[1][0] == 'r') && (argv[1][1] == 'm')) {
264 int nodeoffset; /* node offset from libfdt */
265 int err;
266
267 /*
268 * Get the path. The root node is an oddball, the offset
269 * is zero and has no name.
270 */
271 nodeoffset = fdt_path_offset (fdt, argv[2]);
272 if (nodeoffset < 0) {
273 /*
274 * Not found or something else bad happened.
275 */
276 printf ("libfdt fdt_path_offset() returned %s\n",
277 fdt_strerror(nodeoffset));
278 return 1;
279 }
280 /*
281 * Do the delete. A fourth parameter means delete a property,
282 * otherwise delete the node.
283 */
284 if (argc > 3) {
285 err = fdt_delprop(fdt, nodeoffset, argv[3]);
286 if (err < 0) {
287 printf("libfdt fdt_delprop(): %s\n",
288 fdt_strerror(err));
289 return err;
290 }
291 } else {
292 err = fdt_del_node(fdt, nodeoffset);
293 if (err < 0) {
294 printf("libfdt fdt_del_node(): %s\n",
295 fdt_strerror(err));
296 return err;
297 }
298 }
299
300 /********************************************************************
301 * Display header info
302 ********************************************************************/
303 } else if (argv[1][0] == 'h') {
304 u32 version = fdt_version(fdt);
305 printf("magic:\t\t\t0x%x\n", fdt_magic(fdt));
306 printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(fdt), fdt_totalsize(fdt));
307 printf("off_dt_struct:\t\t0x%x\n", fdt_off_dt_struct(fdt));
308 printf("off_dt_strings:\t\t0x%x\n", fdt_off_dt_strings(fdt));
309 printf("off_mem_rsvmap:\t\t0x%x\n", fdt_off_mem_rsvmap(fdt));
310 printf("version:\t\t%d\n", version);
311 printf("last_comp_version:\t%d\n", fdt_last_comp_version(fdt));
312 if (version >= 2)
313 printf("boot_cpuid_phys:\t0x%x\n",
314 fdt_boot_cpuid_phys(fdt));
315 if (version >= 3)
316 printf("size_dt_strings:\t0x%x\n",
317 fdt_size_dt_strings(fdt));
318 if (version >= 17)
319 printf("size_dt_struct:\t\t0x%x\n",
320 fdt_size_dt_struct(fdt));
321 printf("number mem_rsv:\t\t0x%x\n", fdt_num_mem_rsv(fdt));
322 printf("\n");
323
324 /********************************************************************
325 * Set boot cpu id
326 ********************************************************************/
327 } else if ((argv[1][0] == 'b') && (argv[1][1] == 'o') &&
328 (argv[1][2] == 'o')) {
329 unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
330 fdt_set_boot_cpuid_phys(fdt, tmp);
331
332 /********************************************************************
333 * memory command
334 ********************************************************************/
335 } else if ((argv[1][0] == 'm') && (argv[1][1] == 'e')) {
336 uint64_t addr, size;
337 int err;
338 #ifdef CFG_64BIT_STRTOUL
339 addr = simple_strtoull(argv[2], NULL, 16);
340 size = simple_strtoull(argv[3], NULL, 16);
341 #else
342 addr = simple_strtoul(argv[2], NULL, 16);
343 size = simple_strtoul(argv[3], NULL, 16);
344 #endif
345 err = fdt_fixup_memory(fdt, addr, size);
346 if (err < 0)
347 return err;
348
349 /********************************************************************
350 * mem reserve commands
351 ********************************************************************/
352 } else if ((argv[1][0] == 'r') && (argv[1][1] == 's')) {
353 if (argv[2][0] == 'p') {
354 uint64_t addr, size;
355 int total = fdt_num_mem_rsv(fdt);
356 int j, err;
357 printf("index\t\t start\t\t size\n");
358 printf("-------------------------------"
359 "-----------------\n");
360 for (j = 0; j < total; j++) {
361 err = fdt_get_mem_rsv(fdt, j, &addr, &size);
362 if (err < 0) {
363 printf("libfdt fdt_get_mem_rsv(): %s\n",
364 fdt_strerror(err));
365 return err;
366 }
367 printf(" %x\t%08x%08x\t%08x%08x\n", j,
368 (u32)(addr >> 32),
369 (u32)(addr & 0xffffffff),
370 (u32)(size >> 32),
371 (u32)(size & 0xffffffff));
372 }
373 } else if (argv[2][0] == 'a') {
374 uint64_t addr, size;
375 int err;
376 #ifdef CFG_64BIT_STRTOUL
377 addr = simple_strtoull(argv[3], NULL, 16);
378 size = simple_strtoull(argv[4], NULL, 16);
379 #else
380 addr = simple_strtoul(argv[3], NULL, 16);
381 size = simple_strtoul(argv[4], NULL, 16);
382 #endif
383 err = fdt_add_mem_rsv(fdt, addr, size);
384
385 if (err < 0) {
386 printf("libfdt fdt_add_mem_rsv(): %s\n",
387 fdt_strerror(err));
388 return err;
389 }
390 } else if (argv[2][0] == 'd') {
391 unsigned long idx = simple_strtoul(argv[3], NULL, 16);
392 int err = fdt_del_mem_rsv(fdt, idx);
393
394 if (err < 0) {
395 printf("libfdt fdt_del_mem_rsv(): %s\n",
396 fdt_strerror(err));
397 return err;
398 }
399 } else {
400 /* Unrecognized command */
401 printf ("Usage:\n%s\n", cmdtp->usage);
402 return 1;
403 }
404 }
405 #ifdef CONFIG_OF_BOARD_SETUP
406 /* Call the board-specific fixup routine */
407 else if (argv[1][0] == 'b')
408 ft_board_setup(fdt, gd->bd);
409 #endif
410 /* Create a chosen node */
411 else if (argv[1][0] == 'c')
412 fdt_chosen(fdt, 0, 0, 1);
413
414 #ifdef CONFIG_OF_HAS_UBOOT_ENV
415 /* Create a u-boot-env node */
416 else if (argv[1][0] == 'e')
417 fdt_env(fdt);
418 #endif
419 #ifdef CONFIG_OF_HAS_BD_T
420 /* Create a bd_t node */
421 else if (argv[1][0] == 'b')
422 fdt_bd_t(fdt);
423 #endif
424 else {
425 /* Unrecognized command */
426 printf ("Usage:\n%s\n", cmdtp->usage);
427 return 1;
428 }
429
430 return 0;
431 }
432
433 /****************************************************************************/
434
435 static int fdt_valid(void)
436 {
437 int err;
438
439 if (fdt == NULL) {
440 printf ("The address of the fdt is invalid (NULL).\n");
441 return 0;
442 }
443
444 err = fdt_check_header(fdt);
445 if (err == 0)
446 return 1; /* valid */
447
448 if (err < 0) {
449 printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
450 /*
451 * Be more informative on bad version.
452 */
453 if (err == -FDT_ERR_BADVERSION) {
454 if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION) {
455 printf (" - too old, fdt $d < %d",
456 fdt_version(fdt),
457 FDT_FIRST_SUPPORTED_VERSION);
458 fdt = NULL;
459 }
460 if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION) {
461 printf (" - too new, fdt $d > %d",
462 fdt_version(fdt),
463 FDT_LAST_SUPPORTED_VERSION);
464 fdt = NULL;
465 }
466 return 0;
467 }
468 printf("\n");
469 return 0;
470 }
471 return 1;
472 }
473
474 /****************************************************************************/
475
476 /*
477 * Parse the user's input, partially heuristic. Valid formats:
478 * <00> - hex byte
479 * <0011> - hex half word (16 bits)
480 * <00112233> - hex word (32 bits)
481 * - hex double words (64 bits) are not supported, must use
482 * a byte stream instead.
483 * [00 11 22 .. nn] - byte stream
484 * "string" - If the the value doesn't start with "<" or "[", it is
485 * treated as a string. Note that the quotes are
486 * stripped by the parser before we get the string.
487 */
488 static int fdt_parse_prop(char *pathp, char *prop, char *newval,
489 char *data, int *len)
490 {
491 char *cp; /* temporary char pointer */
492 unsigned long tmp; /* holds converted values */
493
494 if (*newval == '<') {
495 /*
496 * Bigger values than bytes.
497 */
498 *len = 0;
499 newval++;
500 while ((*newval != '>') && (*newval != '\0')) {
501 cp = newval;
502 tmp = simple_strtoul(cp, &newval, 16);
503 if ((newval - cp) <= 2) {
504 *data = tmp & 0xFF;
505 data += 1;
506 *len += 1;
507 } else if ((newval - cp) <= 4) {
508 *(uint16_t *)data = __cpu_to_be16(tmp);
509 data += 2;
510 *len += 2;
511 } else if ((newval - cp) <= 8) {
512 *(uint32_t *)data = __cpu_to_be32(tmp);
513 data += 4;
514 *len += 4;
515 } else {
516 printf("Sorry, I could not convert \"%s\"\n",
517 cp);
518 return 1;
519 }
520 while (*newval == ' ')
521 newval++;
522 }
523 if (*newval != '>') {
524 printf("Unexpected character '%c'\n", *newval);
525 return 1;
526 }
527 } else if (*newval == '[') {
528 /*
529 * Byte stream. Convert the values.
530 */
531 *len = 0;
532 newval++;
533 while ((*newval != ']') && (*newval != '\0')) {
534 tmp = simple_strtoul(newval, &newval, 16);
535 *data++ = tmp & 0xFF;
536 *len = *len + 1;
537 while (*newval == ' ')
538 newval++;
539 }
540 if (*newval != ']') {
541 printf("Unexpected character '%c'\n", *newval);
542 return 1;
543 }
544 } else {
545 /*
546 * Assume it is a string. Copy it into our data area for
547 * convenience (including the terminating '\0').
548 */
549 *len = strlen(newval) + 1;
550 strcpy(data, newval);
551 }
552 return 0;
553 }
554
555 /****************************************************************************/
556
557 /*
558 * Heuristic to guess if this is a string or concatenated strings.
559 */
560
561 static int is_printable_string(const void *data, int len)
562 {
563 const char *s = data;
564
565 /* zero length is not */
566 if (len == 0)
567 return 0;
568
569 /* must terminate with zero */
570 if (s[len - 1] != '\0')
571 return 0;
572
573 /* printable or a null byte (concatenated strings) */
574 while (((*s == '\0') || isprint(*s)) && (len > 0)) {
575 /*
576 * If we see a null, there are three possibilities:
577 * 1) If len == 1, it is the end of the string, printable
578 * 2) Next character also a null, not printable.
579 * 3) Next character not a null, continue to check.
580 */
581 if (s[0] == '\0') {
582 if (len == 1)
583 return 1;
584 if (s[1] == '\0')
585 return 0;
586 }
587 s++;
588 len--;
589 }
590
591 /* Not the null termination, or not done yet: not printable */
592 if (*s != '\0' || (len != 0))
593 return 0;
594
595 return 1;
596 }
597
598
599 /*
600 * Print the property in the best format, a heuristic guess. Print as
601 * a string, concatenated strings, a byte, word, double word, or (if all
602 * else fails) it is printed as a stream of bytes.
603 */
604 static void print_data(const void *data, int len)
605 {
606 int j;
607 const u8 *s;
608
609 /* no data, don't print */
610 if (len == 0)
611 return;
612
613 /*
614 * It is a string, but it may have multiple strings (embedded '\0's).
615 */
616 if (is_printable_string(data, len)) {
617 puts("\"");
618 j = 0;
619 while (j < len) {
620 if (j > 0)
621 puts("\", \"");
622 puts(data);
623 j += strlen(data) + 1;
624 data += strlen(data) + 1;
625 }
626 puts("\"");
627 return;
628 }
629
630 switch (len) {
631 case 1: /* byte */
632 printf("<0x%02x>", (*(u8 *) data) & 0xff);
633 break;
634 case 2: /* half-word */
635 printf("<0x%04x>", be16_to_cpu(*(u16 *) data) & 0xffff);
636 break;
637 case 4: /* word */
638 printf("<0x%08x>", be32_to_cpu(*(u32 *) data) & 0xffffffffU);
639 break;
640 case 8: /* double-word */
641 #if __WORDSIZE == 64
642 printf("<0x%016llx>", be64_to_cpu(*(uint64_t *) data));
643 #else
644 printf("<0x%08x ", be32_to_cpu(*(u32 *) data) & 0xffffffffU);
645 data += 4;
646 printf("0x%08x>", be32_to_cpu(*(u32 *) data) & 0xffffffffU);
647 #endif
648 break;
649 default: /* anything else... hexdump */
650 printf("[");
651 for (j = 0, s = data; j < len; j++)
652 printf("%02x%s", s[j], j < len - 1 ? " " : "");
653 printf("]");
654
655 break;
656 }
657 }
658
659 /****************************************************************************/
660
661 /*
662 * Recursively print (a portion of) the fdt. The depth parameter
663 * determines how deeply nested the fdt is printed.
664 */
665 static int fdt_print(const char *pathp, char *prop, int depth)
666 {
667 static char tabs[MAX_LEVEL+1] =
668 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
669 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
670 const void *nodep; /* property node pointer */
671 int nodeoffset; /* node offset from libfdt */
672 int nextoffset; /* next node offset from libfdt */
673 uint32_t tag; /* tag */
674 int len; /* length of the property */
675 int level = 0; /* keep track of nesting level */
676 const struct fdt_property *fdt_prop;
677
678 nodeoffset = fdt_path_offset (fdt, pathp);
679 if (nodeoffset < 0) {
680 /*
681 * Not found or something else bad happened.
682 */
683 printf ("libfdt fdt_path_offset() returned %s\n",
684 fdt_strerror(nodeoffset));
685 return 1;
686 }
687 /*
688 * The user passed in a property as well as node path.
689 * Print only the given property and then return.
690 */
691 if (prop) {
692 nodep = fdt_getprop (fdt, nodeoffset, prop, &len);
693 if (len == 0) {
694 /* no property value */
695 printf("%s %s\n", pathp, prop);
696 return 0;
697 } else if (len > 0) {
698 printf("%s = ", prop);
699 print_data (nodep, len);
700 printf("\n");
701 return 0;
702 } else {
703 printf ("libfdt fdt_getprop(): %s\n",
704 fdt_strerror(len));
705 return 1;
706 }
707 }
708
709 /*
710 * The user passed in a node path and no property,
711 * print the node and all subnodes.
712 */
713 while(level >= 0) {
714 tag = fdt_next_tag(fdt, nodeoffset, &nextoffset);
715 switch(tag) {
716 case FDT_BEGIN_NODE:
717 pathp = fdt_get_name(fdt, nodeoffset, NULL);
718 if (level <= depth) {
719 if (pathp == NULL)
720 pathp = "/* NULL pointer error */";
721 if (*pathp == '\0')
722 pathp = "/"; /* root is nameless */
723 printf("%s%s {\n",
724 &tabs[MAX_LEVEL - level], pathp);
725 }
726 level++;
727 if (level >= MAX_LEVEL) {
728 printf("Nested too deep, aborting.\n");
729 return 1;
730 }
731 break;
732 case FDT_END_NODE:
733 level--;
734 if (level <= depth)
735 printf("%s};\n", &tabs[MAX_LEVEL - level]);
736 if (level == 0) {
737 level = -1; /* exit the loop */
738 }
739 break;
740 case FDT_PROP:
741 fdt_prop = fdt_offset_ptr(fdt, nodeoffset,
742 sizeof(*fdt_prop));
743 pathp = fdt_string(fdt,
744 fdt32_to_cpu(fdt_prop->nameoff));
745 len = fdt32_to_cpu(fdt_prop->len);
746 nodep = fdt_prop->data;
747 if (len < 0) {
748 printf ("libfdt fdt_getprop(): %s\n",
749 fdt_strerror(len));
750 return 1;
751 } else if (len == 0) {
752 /* the property has no value */
753 if (level <= depth)
754 printf("%s%s;\n",
755 &tabs[MAX_LEVEL - level],
756 pathp);
757 } else {
758 if (level <= depth) {
759 printf("%s%s = ",
760 &tabs[MAX_LEVEL - level],
761 pathp);
762 print_data (nodep, len);
763 printf(";\n");
764 }
765 }
766 break;
767 case FDT_NOP:
768 printf("/* NOP */\n", &tabs[MAX_LEVEL - level]);
769 break;
770 case FDT_END:
771 return 1;
772 default:
773 if (level <= depth)
774 printf("Unknown tag 0x%08X\n", tag);
775 return 1;
776 }
777 nodeoffset = nextoffset;
778 }
779 return 0;
780 }
781
782 /********************************************************************/
783
784 U_BOOT_CMD(
785 fdt, 5, 0, do_fdt,
786 "fdt - flattened device tree utility commands\n",
787 "addr <addr> [<length>] - Set the fdt location to <addr>\n"
788 #ifdef CONFIG_OF_BOARD_SETUP
789 "fdt boardsetup - Do board-specific set up\n"
790 #endif
791 "fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n"
792 "fdt print <path> [<prop>] - Recursive print starting at <path>\n"
793 "fdt list <path> [<prop>] - Print one level starting at <path>\n"
794 "fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
795 "fdt mknode <path> <node> - Create a new node after <path>\n"
796 "fdt rm <path> [<prop>] - Delete the node or <property>\n"
797 "fdt header - Display header info\n"
798 "fdt bootcpu <id> - Set boot cpuid\n"
799 "fdt memory <addr> <size> - Add/Update memory node\n"
800 "fdt rsvmem print - Show current mem reserves\n"
801 "fdt rsvmem add <addr> <size> - Add a mem reserve\n"
802 "fdt rsvmem delete <index> - Delete a mem reserves\n"
803 "fdt chosen - Add/update the /chosen branch in the tree\n"
804 #ifdef CONFIG_OF_HAS_UBOOT_ENV
805 "fdt env - Add/replace the /u-boot-env branch in the tree\n"
806 #endif
807 #ifdef CONFIG_OF_HAS_BD_T
808 "fdt bd_t - Add/replace the /bd_t branch in the tree\n"
809 #endif
810 "NOTE: If the path or property you are setting/printing has a '#' character\n"
811 " or spaces, you MUST escape it with a \\ character or quote it with \".\n"
812 );
"Das U-Boot" Source Tree