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fdt: unshadow global working fdt variable
[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 **newval, int count, char *data, int *len);
46 static int fdt_print(const char *pathp, char *prop, int depth);
47
48 /*
49 * Flattened Device Tree command, see the help for parameter definitions.
50 */
51 int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
52 {
53 if (argc < 2) {
54 printf ("Usage:\n%s\n", cmdtp->usage);
55 return 1;
56 }
57
58 /********************************************************************
59 * Set the address of the fdt
60 ********************************************************************/
61 if (argv[1][0] == 'a') {
62 /*
63 * Set the address [and length] of the fdt.
64 */
65 working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
66
67 if (!fdt_valid()) {
68 return 1;
69 }
70
71 if (argc >= 4) {
72 int len;
73 int err;
74 /*
75 * Optional new length
76 */
77 len = simple_strtoul(argv[3], NULL, 16);
78 if (len < fdt_totalsize(working_fdt)) {
79 printf ("New length %d < existing length %d, "
80 "ignoring.\n",
81 len, fdt_totalsize(working_fdt));
82 } else {
83 /*
84 * Open in place with a new length.
85 */
86 err = fdt_open_into(working_fdt, working_fdt, len);
87 if (err != 0) {
88 printf ("libfdt fdt_open_into(): %s\n",
89 fdt_strerror(err));
90 }
91 }
92 }
93
94 /********************************************************************
95 * Move the working_fdt
96 ********************************************************************/
97 } else if (strncmp(argv[1], "mo", 2) == 0) {
98 struct fdt_header *newaddr;
99 int len;
100 int err;
101
102 if (argc < 4) {
103 printf ("Usage:\n%s\n", cmdtp->usage);
104 return 1;
105 }
106
107 /*
108 * Set the address and length of the fdt.
109 */
110 working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
111 if (!fdt_valid()) {
112 return 1;
113 }
114
115 newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
116
117 /*
118 * If the user specifies a length, use that. Otherwise use the
119 * current length.
120 */
121 if (argc <= 4) {
122 len = fdt_totalsize(working_fdt);
123 } else {
124 len = simple_strtoul(argv[4], NULL, 16);
125 if (len < fdt_totalsize(working_fdt)) {
126 printf ("New length 0x%X < existing length "
127 "0x%X, aborting.\n",
128 len, fdt_totalsize(working_fdt));
129 return 1;
130 }
131 }
132
133 /*
134 * Copy to the new location.
135 */
136 err = fdt_open_into(working_fdt, newaddr, len);
137 if (err != 0) {
138 printf ("libfdt fdt_open_into(): %s\n",
139 fdt_strerror(err));
140 return 1;
141 }
142 working_fdt = newaddr;
143
144 /********************************************************************
145 * Make a new node
146 ********************************************************************/
147 } else if (strncmp(argv[1], "mk", 2) == 0) {
148 char *pathp; /* path */
149 char *nodep; /* new node to add */
150 int nodeoffset; /* node offset from libfdt */
151 int err;
152
153 /*
154 * Parameters: Node path, new node to be appended to the path.
155 */
156 if (argc < 4) {
157 printf ("Usage:\n%s\n", cmdtp->usage);
158 return 1;
159 }
160
161 pathp = argv[2];
162 nodep = argv[3];
163
164 nodeoffset = fdt_path_offset (working_fdt, pathp);
165 if (nodeoffset < 0) {
166 /*
167 * Not found or something else bad happened.
168 */
169 printf ("libfdt fdt_path_offset() returned %s\n",
170 fdt_strerror(nodeoffset));
171 return 1;
172 }
173 err = fdt_add_subnode(working_fdt, nodeoffset, nodep);
174 if (err < 0) {
175 printf ("libfdt fdt_add_subnode(): %s\n",
176 fdt_strerror(err));
177 return 1;
178 }
179
180 /********************************************************************
181 * Set the value of a property in the working_fdt.
182 ********************************************************************/
183 } else if (argv[1][0] == 's') {
184 char *pathp; /* path */
185 char *prop; /* property */
186 int nodeoffset; /* node offset from libfdt */
187 static char data[SCRATCHPAD]; /* storage for the property */
188 int len; /* new length of the property */
189 int ret; /* return value */
190
191 /*
192 * Parameters: Node path, property, optional value.
193 */
194 if (argc < 4) {
195 printf ("Usage:\n%s\n", cmdtp->usage);
196 return 1;
197 }
198
199 pathp = argv[2];
200 prop = argv[3];
201 if (argc == 4) {
202 len = 0;
203 } else {
204 ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
205 if (ret != 0)
206 return ret;
207 }
208
209 nodeoffset = fdt_path_offset (working_fdt, pathp);
210 if (nodeoffset < 0) {
211 /*
212 * Not found or something else bad happened.
213 */
214 printf ("libfdt fdt_path_offset() returned %s\n",
215 fdt_strerror(nodeoffset));
216 return 1;
217 }
218
219 ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
220 if (ret < 0) {
221 printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
222 return 1;
223 }
224
225 /********************************************************************
226 * Print (recursive) / List (single level)
227 ********************************************************************/
228 } else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
229 int depth = MAX_LEVEL; /* how deep to print */
230 char *pathp; /* path */
231 char *prop; /* property */
232 int ret; /* return value */
233 static char root[2] = "/";
234
235 /*
236 * list is an alias for print, but limited to 1 level
237 */
238 if (argv[1][0] == 'l') {
239 depth = 1;
240 }
241
242 /*
243 * Get the starting path. The root node is an oddball,
244 * the offset is zero and has no name.
245 */
246 if (argc == 2)
247 pathp = root;
248 else
249 pathp = argv[2];
250 if (argc > 3)
251 prop = argv[3];
252 else
253 prop = NULL;
254
255 ret = fdt_print(pathp, prop, depth);
256 if (ret != 0)
257 return ret;
258
259 /********************************************************************
260 * Remove a property/node
261 ********************************************************************/
262 } else if (strncmp(argv[1], "rm", 2) == 0) {
263 int nodeoffset; /* node offset from libfdt */
264 int err;
265
266 /*
267 * Get the path. The root node is an oddball, the offset
268 * is zero and has no name.
269 */
270 nodeoffset = fdt_path_offset (working_fdt, argv[2]);
271 if (nodeoffset < 0) {
272 /*
273 * Not found or something else bad happened.
274 */
275 printf ("libfdt fdt_path_offset() returned %s\n",
276 fdt_strerror(nodeoffset));
277 return 1;
278 }
279 /*
280 * Do the delete. A fourth parameter means delete a property,
281 * otherwise delete the node.
282 */
283 if (argc > 3) {
284 err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
285 if (err < 0) {
286 printf("libfdt fdt_delprop(): %s\n",
287 fdt_strerror(err));
288 return err;
289 }
290 } else {
291 err = fdt_del_node(working_fdt, nodeoffset);
292 if (err < 0) {
293 printf("libfdt fdt_del_node(): %s\n",
294 fdt_strerror(err));
295 return err;
296 }
297 }
298
299 /********************************************************************
300 * Display header info
301 ********************************************************************/
302 } else if (argv[1][0] == 'h') {
303 u32 version = fdt_version(working_fdt);
304 printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
305 printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
306 fdt_totalsize(working_fdt));
307 printf("off_dt_struct:\t\t0x%x\n",
308 fdt_off_dt_struct(working_fdt));
309 printf("off_dt_strings:\t\t0x%x\n",
310 fdt_off_dt_strings(working_fdt));
311 printf("off_mem_rsvmap:\t\t0x%x\n",
312 fdt_off_mem_rsvmap(working_fdt));
313 printf("version:\t\t%d\n", version);
314 printf("last_comp_version:\t%d\n",
315 fdt_last_comp_version(working_fdt));
316 if (version >= 2)
317 printf("boot_cpuid_phys:\t0x%x\n",
318 fdt_boot_cpuid_phys(working_fdt));
319 if (version >= 3)
320 printf("size_dt_strings:\t0x%x\n",
321 fdt_size_dt_strings(working_fdt));
322 if (version >= 17)
323 printf("size_dt_struct:\t\t0x%x\n",
324 fdt_size_dt_struct(working_fdt));
325 printf("number mem_rsv:\t\t0x%x\n",
326 fdt_num_mem_rsv(working_fdt));
327 printf("\n");
328
329 /********************************************************************
330 * Set boot cpu id
331 ********************************************************************/
332 } else if (strncmp(argv[1], "boo", 3) == 0) {
333 unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
334 fdt_set_boot_cpuid_phys(working_fdt, tmp);
335
336 /********************************************************************
337 * memory command
338 ********************************************************************/
339 } else if (strncmp(argv[1], "me", 2) == 0) {
340 uint64_t addr, size;
341 int err;
342 #ifdef CFG_64BIT_STRTOUL
343 addr = simple_strtoull(argv[2], NULL, 16);
344 size = simple_strtoull(argv[3], NULL, 16);
345 #else
346 addr = simple_strtoul(argv[2], NULL, 16);
347 size = simple_strtoul(argv[3], NULL, 16);
348 #endif
349 err = fdt_fixup_memory(working_fdt, addr, size);
350 if (err < 0)
351 return err;
352
353 /********************************************************************
354 * mem reserve commands
355 ********************************************************************/
356 } else if (strncmp(argv[1], "rs", 2) == 0) {
357 if (argv[2][0] == 'p') {
358 uint64_t addr, size;
359 int total = fdt_num_mem_rsv(working_fdt);
360 int j, err;
361 printf("index\t\t start\t\t size\n");
362 printf("-------------------------------"
363 "-----------------\n");
364 for (j = 0; j < total; j++) {
365 err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
366 if (err < 0) {
367 printf("libfdt fdt_get_mem_rsv(): %s\n",
368 fdt_strerror(err));
369 return err;
370 }
371 printf(" %x\t%08x%08x\t%08x%08x\n", j,
372 (u32)(addr >> 32),
373 (u32)(addr & 0xffffffff),
374 (u32)(size >> 32),
375 (u32)(size & 0xffffffff));
376 }
377 } else if (argv[2][0] == 'a') {
378 uint64_t addr, size;
379 int err;
380 #ifdef CFG_64BIT_STRTOUL
381 addr = simple_strtoull(argv[3], NULL, 16);
382 size = simple_strtoull(argv[4], NULL, 16);
383 #else
384 addr = simple_strtoul(argv[3], NULL, 16);
385 size = simple_strtoul(argv[4], NULL, 16);
386 #endif
387 err = fdt_add_mem_rsv(working_fdt, addr, size);
388
389 if (err < 0) {
390 printf("libfdt fdt_add_mem_rsv(): %s\n",
391 fdt_strerror(err));
392 return err;
393 }
394 } else if (argv[2][0] == 'd') {
395 unsigned long idx = simple_strtoul(argv[3], NULL, 16);
396 int err = fdt_del_mem_rsv(working_fdt, idx);
397
398 if (err < 0) {
399 printf("libfdt fdt_del_mem_rsv(): %s\n",
400 fdt_strerror(err));
401 return err;
402 }
403 } else {
404 /* Unrecognized command */
405 printf ("Usage:\n%s\n", cmdtp->usage);
406 return 1;
407 }
408 }
409 #ifdef CONFIG_OF_BOARD_SETUP
410 /* Call the board-specific fixup routine */
411 else if (strncmp(argv[1], "boa", 3) == 0)
412 ft_board_setup(working_fdt, gd->bd);
413 #endif
414 /* Create a chosen node */
415 else if (argv[1][0] == 'c')
416 fdt_chosen(working_fdt, 0, 0, 1);
417 else {
418 /* Unrecognized command */
419 printf ("Usage:\n%s\n", cmdtp->usage);
420 return 1;
421 }
422
423 return 0;
424 }
425
426 /****************************************************************************/
427
428 static int fdt_valid(void)
429 {
430 int err;
431
432 if (working_fdt == NULL) {
433 printf ("The address of the fdt is invalid (NULL).\n");
434 return 0;
435 }
436
437 err = fdt_check_header(working_fdt);
438 if (err == 0)
439 return 1; /* valid */
440
441 if (err < 0) {
442 printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
443 /*
444 * Be more informative on bad version.
445 */
446 if (err == -FDT_ERR_BADVERSION) {
447 if (fdt_version(working_fdt) <
448 FDT_FIRST_SUPPORTED_VERSION) {
449 printf (" - too old, fdt $d < %d",
450 fdt_version(working_fdt),
451 FDT_FIRST_SUPPORTED_VERSION);
452 working_fdt = NULL;
453 }
454 if (fdt_last_comp_version(working_fdt) >
455 FDT_LAST_SUPPORTED_VERSION) {
456 printf (" - too new, fdt $d > %d",
457 fdt_version(working_fdt),
458 FDT_LAST_SUPPORTED_VERSION);
459 working_fdt = NULL;
460 }
461 return 0;
462 }
463 printf("\n");
464 return 0;
465 }
466 return 1;
467 }
468
469 /****************************************************************************/
470
471 /*
472 * Parse the user's input, partially heuristic. Valid formats:
473 * <0x00112233 4 05> - an array of cells. Numbers follow standard
474 * C conventions.
475 * [00 11 22 .. nn] - byte stream
476 * "string" - If the the value doesn't start with "<" or "[", it is
477 * treated as a string. Note that the quotes are
478 * stripped by the parser before we get the string.
479 * newval: An array of strings containing the new property as specified
480 * on the command line
481 * count: The number of strings in the array
482 * data: A bytestream to be placed in the property
483 * len: The length of the resulting bytestream
484 */
485 static int fdt_parse_prop(char **newval, int count, char *data, int *len)
486 {
487 char *cp; /* temporary char pointer */
488 char *newp; /* temporary newval char pointer */
489 unsigned long tmp; /* holds converted values */
490 int stridx = 0;
491
492 *len = 0;
493 newp = newval[0];
494
495 /* An array of cells */
496 if (*newp == '<') {
497 newp++;
498 while ((*newp != '>') && (stridx < count)) {
499 /*
500 * Keep searching until we find that last ">"
501 * That way users don't have to escape the spaces
502 */
503 if (*newp == '\0') {
504 newp = newval[++stridx];
505 continue;
506 }
507
508 cp = newp;
509 tmp = simple_strtoul(cp, &newp, 0);
510 *(uint32_t *)data = __cpu_to_be32(tmp);
511 data += 4;
512 *len += 4;
513
514 /* If the ptr didn't advance, something went wrong */
515 if ((newp - cp) <= 0) {
516 printf("Sorry, I could not convert \"%s\"\n",
517 cp);
518 return 1;
519 }
520
521 while (*newp == ' ')
522 newp++;
523 }
524
525 if (*newp != '>') {
526 printf("Unexpected character '%c'\n", *newp);
527 return 1;
528 }
529 } else if (*newp == '[') {
530 /*
531 * Byte stream. Convert the values.
532 */
533 newp++;
534 while ((*newp != ']') && (stridx < count)) {
535 tmp = simple_strtoul(newp, &newp, 16);
536 *data++ = tmp & 0xFF;
537 *len = *len + 1;
538 while (*newp == ' ')
539 newp++;
540 if (*newp != '\0')
541 newp = newval[++stridx];
542 }
543 if (*newp != ']') {
544 printf("Unexpected character '%c'\n", *newval);
545 return 1;
546 }
547 } else {
548 /*
549 * Assume it is a string. Copy it into our data area for
550 * convenience (including the terminating '\0').
551 */
552 while (stridx < count) {
553 *len = strlen(newp) + 1;
554 strcpy(data, newp);
555 newp = newval[++stridx];
556 }
557 }
558 return 0;
559 }
560
561 /****************************************************************************/
562
563 /*
564 * Heuristic to guess if this is a string or concatenated strings.
565 */
566
567 static int is_printable_string(const void *data, int len)
568 {
569 const char *s = data;
570
571 /* zero length is not */
572 if (len == 0)
573 return 0;
574
575 /* must terminate with zero */
576 if (s[len - 1] != '\0')
577 return 0;
578
579 /* printable or a null byte (concatenated strings) */
580 while (((*s == '\0') || isprint(*s)) && (len > 0)) {
581 /*
582 * If we see a null, there are three possibilities:
583 * 1) If len == 1, it is the end of the string, printable
584 * 2) Next character also a null, not printable.
585 * 3) Next character not a null, continue to check.
586 */
587 if (s[0] == '\0') {
588 if (len == 1)
589 return 1;
590 if (s[1] == '\0')
591 return 0;
592 }
593 s++;
594 len--;
595 }
596
597 /* Not the null termination, or not done yet: not printable */
598 if (*s != '\0' || (len != 0))
599 return 0;
600
601 return 1;
602 }
603
604
605 /*
606 * Print the property in the best format, a heuristic guess. Print as
607 * a string, concatenated strings, a byte, word, double word, or (if all
608 * else fails) it is printed as a stream of bytes.
609 */
610 static void print_data(const void *data, int len)
611 {
612 int j;
613
614 /* no data, don't print */
615 if (len == 0)
616 return;
617
618 /*
619 * It is a string, but it may have multiple strings (embedded '\0's).
620 */
621 if (is_printable_string(data, len)) {
622 puts("\"");
623 j = 0;
624 while (j < len) {
625 if (j > 0)
626 puts("\", \"");
627 puts(data);
628 j += strlen(data) + 1;
629 data += strlen(data) + 1;
630 }
631 puts("\"");
632 return;
633 }
634
635 if ((len %4) == 0) {
636 const u32 *p;
637
638 printf("<");
639 for (j = 0, p = data; j < len/4; j ++)
640 printf("0x%x%s", p[j], j < (len/4 - 1) ? " " : "");
641 printf(">");
642 } else { /* anything else... hexdump */
643 const u8 *s;
644
645 printf("[");
646 for (j = 0, s = data; j < len; j++)
647 printf("%02x%s", s[j], j < len - 1 ? " " : "");
648 printf("]");
649 }
650 }
651
652 /****************************************************************************/
653
654 /*
655 * Recursively print (a portion of) the working_fdt. The depth parameter
656 * determines how deeply nested the fdt is printed.
657 */
658 static int fdt_print(const char *pathp, char *prop, int depth)
659 {
660 static char tabs[MAX_LEVEL+1] =
661 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
662 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
663 const void *nodep; /* property node pointer */
664 int nodeoffset; /* node offset from libfdt */
665 int nextoffset; /* next node offset from libfdt */
666 uint32_t tag; /* tag */
667 int len; /* length of the property */
668 int level = 0; /* keep track of nesting level */
669 const struct fdt_property *fdt_prop;
670
671 nodeoffset = fdt_path_offset (working_fdt, pathp);
672 if (nodeoffset < 0) {
673 /*
674 * Not found or something else bad happened.
675 */
676 printf ("libfdt fdt_path_offset() returned %s\n",
677 fdt_strerror(nodeoffset));
678 return 1;
679 }
680 /*
681 * The user passed in a property as well as node path.
682 * Print only the given property and then return.
683 */
684 if (prop) {
685 nodep = fdt_getprop (working_fdt, nodeoffset, prop, &len);
686 if (len == 0) {
687 /* no property value */
688 printf("%s %s\n", pathp, prop);
689 return 0;
690 } else if (len > 0) {
691 printf("%s = ", prop);
692 print_data (nodep, len);
693 printf("\n");
694 return 0;
695 } else {
696 printf ("libfdt fdt_getprop(): %s\n",
697 fdt_strerror(len));
698 return 1;
699 }
700 }
701
702 /*
703 * The user passed in a node path and no property,
704 * print the node and all subnodes.
705 */
706 while(level >= 0) {
707 tag = fdt_next_tag(working_fdt, nodeoffset, &nextoffset);
708 switch(tag) {
709 case FDT_BEGIN_NODE:
710 pathp = fdt_get_name(working_fdt, nodeoffset, NULL);
711 if (level <= depth) {
712 if (pathp == NULL)
713 pathp = "/* NULL pointer error */";
714 if (*pathp == '\0')
715 pathp = "/"; /* root is nameless */
716 printf("%s%s {\n",
717 &tabs[MAX_LEVEL - level], pathp);
718 }
719 level++;
720 if (level >= MAX_LEVEL) {
721 printf("Nested too deep, aborting.\n");
722 return 1;
723 }
724 break;
725 case FDT_END_NODE:
726 level--;
727 if (level <= depth)
728 printf("%s};\n", &tabs[MAX_LEVEL - level]);
729 if (level == 0) {
730 level = -1; /* exit the loop */
731 }
732 break;
733 case FDT_PROP:
734 fdt_prop = fdt_offset_ptr(working_fdt, nodeoffset,
735 sizeof(*fdt_prop));
736 pathp = fdt_string(working_fdt,
737 fdt32_to_cpu(fdt_prop->nameoff));
738 len = fdt32_to_cpu(fdt_prop->len);
739 nodep = fdt_prop->data;
740 if (len < 0) {
741 printf ("libfdt fdt_getprop(): %s\n",
742 fdt_strerror(len));
743 return 1;
744 } else if (len == 0) {
745 /* the property has no value */
746 if (level <= depth)
747 printf("%s%s;\n",
748 &tabs[MAX_LEVEL - level],
749 pathp);
750 } else {
751 if (level <= depth) {
752 printf("%s%s = ",
753 &tabs[MAX_LEVEL - level],
754 pathp);
755 print_data (nodep, len);
756 printf(";\n");
757 }
758 }
759 break;
760 case FDT_NOP:
761 printf("/* NOP */\n", &tabs[MAX_LEVEL - level]);
762 break;
763 case FDT_END:
764 return 1;
765 default:
766 if (level <= depth)
767 printf("Unknown tag 0x%08X\n", tag);
768 return 1;
769 }
770 nodeoffset = nextoffset;
771 }
772 return 0;
773 }
774
775 /********************************************************************/
776
777 U_BOOT_CMD(
778 fdt, 255, 0, do_fdt,
779 "fdt - flattened device tree utility commands\n",
780 "addr <addr> [<length>] - Set the fdt location to <addr>\n"
781 #ifdef CONFIG_OF_BOARD_SETUP
782 "fdt boardsetup - Do board-specific set up\n"
783 #endif
784 "fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n"
785 "fdt print <path> [<prop>] - Recursive print starting at <path>\n"
786 "fdt list <path> [<prop>] - Print one level starting at <path>\n"
787 "fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
788 "fdt mknode <path> <node> - Create a new node after <path>\n"
789 "fdt rm <path> [<prop>] - Delete the node or <property>\n"
790 "fdt header - Display header info\n"
791 "fdt bootcpu <id> - Set boot cpuid\n"
792 "fdt memory <addr> <size> - Add/Update memory node\n"
793 "fdt rsvmem print - Show current mem reserves\n"
794 "fdt rsvmem add <addr> <size> - Add a mem reserve\n"
795 "fdt rsvmem delete <index> - Delete a mem reserves\n"
796 "fdt chosen - Add/update the /chosen branch in the tree\n"
797 "NOTE: If the path or property you are setting/printing has a '#' character\n"
798 " or spaces, you MUST escape it with a \\ character or quote it with \".\n"
799 );
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