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>
8 * SPDX-License-Identifier: GPL-2.0+
13 #include <linux/ctype.h>
14 #include <linux/types.h>
15 #include <asm/global_data.h>
17 #include <fdt_support.h>
20 #define MAX_LEVEL 32 /* how deeply nested we will go */
21 #define SCRATCHPAD 1024 /* bytes of scratchpad memory */
22 #ifndef CONFIG_CMD_FDT_MAX_DUMP
23 #define CONFIG_CMD_FDT_MAX_DUMP 64
27 * Global data (for the gd->bd)
29 DECLARE_GLOBAL_DATA_PTR
;
31 static int fdt_valid(struct fdt_header
**blobp
);
32 static int fdt_parse_prop(char *const*newval
, int count
, char *data
, int *len
);
33 static int fdt_print(const char *pathp
, char *prop
, int depth
);
34 static int is_printable_string(const void *data
, int len
);
37 * The working_fdt points to our working flattened device tree.
39 struct fdt_header
*working_fdt
;
41 void set_working_fdt_addr(void *addr
)
45 buf
= map_sysmem((ulong
)addr
, 0);
47 setenv_addr("fdtaddr", addr
);
51 * Get a value from the fdt and format it to be set in the environment
53 static int fdt_value_setenv(const void *nodep
, int len
, const char *var
)
55 if (is_printable_string(nodep
, len
))
56 setenv(var
, (void *)nodep
);
60 sprintf(buf
, "0x%08X", *(uint32_t *)nodep
);
62 } else if (len
%4 == 0 && len
<= 20) {
63 /* Needed to print things like sha1 hashes. */
67 for (i
= 0; i
< len
; i
+= sizeof(unsigned int))
68 sprintf(buf
+ (i
* 2), "%08x",
69 *(unsigned int *)(nodep
+ i
));
72 printf("error: unprintable value\n");
79 * Flattened Device Tree command, see the help for parameter definitions.
81 static int do_fdt(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
87 * Set the address of the fdt
89 if (argv
[1][0] == 'a') {
92 struct fdt_header
*blob
;
94 * Set the address [and length] of the fdt.
98 /* Temporary #ifdef - some archs don't have fdt_blob yet */
99 #ifdef CONFIG_OF_CONTROL
100 if (argc
&& !strcmp(*argv
, "-c")) {
108 blob
= (struct fdt_header
*)gd
->fdt_blob
;
111 if (!blob
|| !fdt_valid(&blob
))
113 printf("The address of the fdt is %#08lx\n",
114 control
? (ulong
)blob
:
115 getenv_hex("fdtaddr", 0));
119 addr
= simple_strtoul(argv
[0], NULL
, 16);
120 blob
= map_sysmem(addr
, 0);
121 if (!fdt_valid(&blob
))
126 set_working_fdt_addr(blob
);
132 * Optional new length
134 len
= simple_strtoul(argv
[1], NULL
, 16);
135 if (len
< fdt_totalsize(blob
)) {
136 printf ("New length %d < existing length %d, "
138 len
, fdt_totalsize(blob
));
141 * Open in place with a new length.
143 err
= fdt_open_into(blob
, blob
, len
);
145 printf ("libfdt fdt_open_into(): %s\n",
151 return CMD_RET_SUCCESS
;
156 "No FDT memory address configured. Please configure\n"
157 "the FDT address via \"fdt addr <address>\" command.\n"
159 return CMD_RET_FAILURE
;
163 * Move the working_fdt
165 if (strncmp(argv
[1], "mo", 2) == 0) {
166 struct fdt_header
*newaddr
;
171 return CMD_RET_USAGE
;
174 * Set the address and length of the fdt.
176 working_fdt
= (struct fdt_header
*)simple_strtoul(argv
[2], NULL
, 16);
177 if (!fdt_valid(&working_fdt
))
180 newaddr
= (struct fdt_header
*)simple_strtoul(argv
[3],NULL
,16);
183 * If the user specifies a length, use that. Otherwise use the
187 len
= fdt_totalsize(working_fdt
);
189 len
= simple_strtoul(argv
[4], NULL
, 16);
190 if (len
< fdt_totalsize(working_fdt
)) {
191 printf ("New length 0x%X < existing length "
193 len
, fdt_totalsize(working_fdt
));
199 * Copy to the new location.
201 err
= fdt_open_into(working_fdt
, newaddr
, len
);
203 printf ("libfdt fdt_open_into(): %s\n",
207 working_fdt
= newaddr
;
212 } else if (strncmp(argv
[1], "mk", 2) == 0) {
213 char *pathp
; /* path */
214 char *nodep
; /* new node to add */
215 int nodeoffset
; /* node offset from libfdt */
219 * Parameters: Node path, new node to be appended to the path.
222 return CMD_RET_USAGE
;
227 nodeoffset
= fdt_path_offset (working_fdt
, pathp
);
228 if (nodeoffset
< 0) {
230 * Not found or something else bad happened.
232 printf ("libfdt fdt_path_offset() returned %s\n",
233 fdt_strerror(nodeoffset
));
236 err
= fdt_add_subnode(working_fdt
, nodeoffset
, nodep
);
238 printf ("libfdt fdt_add_subnode(): %s\n",
244 * Set the value of a property in the working_fdt.
246 } else if (argv
[1][0] == 's') {
247 char *pathp
; /* path */
248 char *prop
; /* property */
249 int nodeoffset
; /* node offset from libfdt */
250 static char data
[SCRATCHPAD
]; /* storage for the property */
251 int len
; /* new length of the property */
252 int ret
; /* return value */
255 * Parameters: Node path, property, optional value.
258 return CMD_RET_USAGE
;
265 ret
= fdt_parse_prop(&argv
[4], argc
- 4, data
, &len
);
270 nodeoffset
= fdt_path_offset (working_fdt
, pathp
);
271 if (nodeoffset
< 0) {
273 * Not found or something else bad happened.
275 printf ("libfdt fdt_path_offset() returned %s\n",
276 fdt_strerror(nodeoffset
));
280 ret
= fdt_setprop(working_fdt
, nodeoffset
, prop
, data
, len
);
282 printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret
));
286 /********************************************************************
287 * Get the value of a property in the working_fdt.
288 ********************************************************************/
289 } else if (argv
[1][0] == 'g') {
290 char *subcmd
; /* sub-command */
291 char *pathp
; /* path */
292 char *prop
; /* property */
293 char *var
; /* variable to store result */
294 int nodeoffset
; /* node offset from libfdt */
295 const void *nodep
; /* property node pointer */
296 int len
= 0; /* new length of the property */
299 * Parameters: Node path, property, optional value.
302 return CMD_RET_USAGE
;
306 if (argc
< 6 && subcmd
[0] != 's')
307 return CMD_RET_USAGE
;
313 nodeoffset
= fdt_path_offset(working_fdt
, pathp
);
314 if (nodeoffset
< 0) {
316 * Not found or something else bad happened.
318 printf("libfdt fdt_path_offset() returned %s\n",
319 fdt_strerror(nodeoffset
));
323 if (subcmd
[0] == 'n' || (subcmd
[0] == 's' && argc
== 5)) {
325 int startDepth
= fdt_node_depth(
326 working_fdt
, nodeoffset
);
327 int curDepth
= startDepth
;
329 int nextNodeOffset
= fdt_next_node(
330 working_fdt
, nodeoffset
, &curDepth
);
332 if (subcmd
[0] == 'n')
333 reqIndex
= simple_strtoul(argv
[5], NULL
, 16);
335 while (curDepth
> startDepth
) {
336 if (curDepth
== startDepth
+ 1)
338 if (subcmd
[0] == 'n' && curIndex
== reqIndex
) {
339 const char *nodeName
= fdt_get_name(
340 working_fdt
, nextNodeOffset
, NULL
);
342 setenv(var
, (char *)nodeName
);
345 nextNodeOffset
= fdt_next_node(
346 working_fdt
, nextNodeOffset
, &curDepth
);
347 if (nextNodeOffset
< 0)
350 if (subcmd
[0] == 's') {
351 /* get the num nodes at this level */
352 setenv_ulong(var
, curIndex
+ 1);
354 /* node index not found */
355 printf("libfdt node not found\n");
360 working_fdt
, nodeoffset
, prop
, &len
);
362 /* no property value */
365 } else if (len
> 0) {
366 if (subcmd
[0] == 'v') {
369 ret
= fdt_value_setenv(nodep
, len
, var
);
372 } else if (subcmd
[0] == 'a') {
376 sprintf(buf
, "0x%p", nodep
);
378 } else if (subcmd
[0] == 's') {
382 sprintf(buf
, "0x%08X", len
);
385 return CMD_RET_USAGE
;
388 printf("libfdt fdt_getprop(): %s\n",
395 * Print (recursive) / List (single level)
397 } else if ((argv
[1][0] == 'p') || (argv
[1][0] == 'l')) {
398 int depth
= MAX_LEVEL
; /* how deep to print */
399 char *pathp
; /* path */
400 char *prop
; /* property */
401 int ret
; /* return value */
402 static char root
[2] = "/";
405 * list is an alias for print, but limited to 1 level
407 if (argv
[1][0] == 'l') {
412 * Get the starting path. The root node is an oddball,
413 * the offset is zero and has no name.
424 ret
= fdt_print(pathp
, prop
, depth
);
429 * Remove a property/node
431 } else if (strncmp(argv
[1], "rm", 2) == 0) {
432 int nodeoffset
; /* node offset from libfdt */
436 * Get the path. The root node is an oddball, the offset
437 * is zero and has no name.
439 nodeoffset
= fdt_path_offset (working_fdt
, argv
[2]);
440 if (nodeoffset
< 0) {
442 * Not found or something else bad happened.
444 printf ("libfdt fdt_path_offset() returned %s\n",
445 fdt_strerror(nodeoffset
));
449 * Do the delete. A fourth parameter means delete a property,
450 * otherwise delete the node.
453 err
= fdt_delprop(working_fdt
, nodeoffset
, argv
[3]);
455 printf("libfdt fdt_delprop(): %s\n",
460 err
= fdt_del_node(working_fdt
, nodeoffset
);
462 printf("libfdt fdt_del_node(): %s\n",
469 * Display header info
471 } else if (argv
[1][0] == 'h') {
472 u32 version
= fdt_version(working_fdt
);
473 printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt
));
474 printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt
),
475 fdt_totalsize(working_fdt
));
476 printf("off_dt_struct:\t\t0x%x\n",
477 fdt_off_dt_struct(working_fdt
));
478 printf("off_dt_strings:\t\t0x%x\n",
479 fdt_off_dt_strings(working_fdt
));
480 printf("off_mem_rsvmap:\t\t0x%x\n",
481 fdt_off_mem_rsvmap(working_fdt
));
482 printf("version:\t\t%d\n", version
);
483 printf("last_comp_version:\t%d\n",
484 fdt_last_comp_version(working_fdt
));
486 printf("boot_cpuid_phys:\t0x%x\n",
487 fdt_boot_cpuid_phys(working_fdt
));
489 printf("size_dt_strings:\t0x%x\n",
490 fdt_size_dt_strings(working_fdt
));
492 printf("size_dt_struct:\t\t0x%x\n",
493 fdt_size_dt_struct(working_fdt
));
494 printf("number mem_rsv:\t\t0x%x\n",
495 fdt_num_mem_rsv(working_fdt
));
501 } else if (strncmp(argv
[1], "boo", 3) == 0) {
502 unsigned long tmp
= simple_strtoul(argv
[2], NULL
, 16);
503 fdt_set_boot_cpuid_phys(working_fdt
, tmp
);
508 } else if (strncmp(argv
[1], "me", 2) == 0) {
511 addr
= simple_strtoull(argv
[2], NULL
, 16);
512 size
= simple_strtoull(argv
[3], NULL
, 16);
513 err
= fdt_fixup_memory(working_fdt
, addr
, size
);
518 * mem reserve commands
520 } else if (strncmp(argv
[1], "rs", 2) == 0) {
521 if (argv
[2][0] == 'p') {
523 int total
= fdt_num_mem_rsv(working_fdt
);
525 printf("index\t\t start\t\t size\n");
526 printf("-------------------------------"
527 "-----------------\n");
528 for (j
= 0; j
< total
; j
++) {
529 err
= fdt_get_mem_rsv(working_fdt
, j
, &addr
, &size
);
531 printf("libfdt fdt_get_mem_rsv(): %s\n",
535 printf(" %x\t%08x%08x\t%08x%08x\n", j
,
537 (u32
)(addr
& 0xffffffff),
539 (u32
)(size
& 0xffffffff));
541 } else if (argv
[2][0] == 'a') {
544 addr
= simple_strtoull(argv
[3], NULL
, 16);
545 size
= simple_strtoull(argv
[4], NULL
, 16);
546 err
= fdt_add_mem_rsv(working_fdt
, addr
, size
);
549 printf("libfdt fdt_add_mem_rsv(): %s\n",
553 } else if (argv
[2][0] == 'd') {
554 unsigned long idx
= simple_strtoul(argv
[3], NULL
, 16);
555 int err
= fdt_del_mem_rsv(working_fdt
, idx
);
558 printf("libfdt fdt_del_mem_rsv(): %s\n",
563 /* Unrecognized command */
564 return CMD_RET_USAGE
;
567 #ifdef CONFIG_OF_BOARD_SETUP
568 /* Call the board-specific fixup routine */
569 else if (strncmp(argv
[1], "boa", 3) == 0)
570 ft_board_setup(working_fdt
, gd
->bd
);
572 /* Create a chosen node */
573 else if (strncmp(argv
[1], "cho", 3) == 0) {
574 unsigned long initrd_start
= 0, initrd_end
= 0;
576 if ((argc
!= 2) && (argc
!= 4))
577 return CMD_RET_USAGE
;
580 initrd_start
= simple_strtoul(argv
[2], NULL
, 16);
581 initrd_end
= simple_strtoul(argv
[3], NULL
, 16);
584 fdt_chosen(working_fdt
);
585 fdt_initrd(working_fdt
, initrd_start
, initrd_end
);
587 #if defined(CONFIG_FIT_SIGNATURE)
588 } else if (strncmp(argv
[1], "che", 3) == 0) {
592 struct fdt_header
*blob
;
595 return CMD_RET_FAILURE
;
598 addr
= simple_strtoul(argv
[2], NULL
, 16);
599 blob
= map_sysmem(addr
, 0);
601 blob
= (struct fdt_header
*)gd
->fdt_blob
;
603 if (!fdt_valid(&blob
))
607 cfg_noffset
= fit_conf_get_node(working_fdt
, NULL
);
609 printf("Could not find configuration node: %s\n",
610 fdt_strerror(cfg_noffset
));
611 return CMD_RET_FAILURE
;
614 ret
= fit_config_verify(working_fdt
, cfg_noffset
);
616 return CMD_RET_SUCCESS
;
618 return CMD_RET_FAILURE
;
623 else if (strncmp(argv
[1], "re", 2) == 0) {
624 fdt_shrink_to_minimum(working_fdt
);
627 /* Unrecognized command */
628 return CMD_RET_USAGE
;
634 /****************************************************************************/
637 * fdt_valid() - Check if an FDT is valid. If not, change it to NULL
639 * @blobp: Pointer to FDT pointer
640 * @return 1 if OK, 0 if bad (in which case *blobp is set to NULL)
642 static int fdt_valid(struct fdt_header
**blobp
)
644 const void *blob
= *blobp
;
648 printf ("The address of the fdt is invalid (NULL).\n");
652 err
= fdt_check_header(blob
);
654 return 1; /* valid */
657 printf("libfdt fdt_check_header(): %s", fdt_strerror(err
));
659 * Be more informative on bad version.
661 if (err
== -FDT_ERR_BADVERSION
) {
662 if (fdt_version(blob
) <
663 FDT_FIRST_SUPPORTED_VERSION
) {
664 printf (" - too old, fdt %d < %d",
666 FDT_FIRST_SUPPORTED_VERSION
);
668 if (fdt_last_comp_version(blob
) >
669 FDT_LAST_SUPPORTED_VERSION
) {
670 printf (" - too new, fdt %d > %d",
672 FDT_LAST_SUPPORTED_VERSION
);
682 /****************************************************************************/
685 * Parse the user's input, partially heuristic. Valid formats:
686 * <0x00112233 4 05> - an array of cells. Numbers follow standard
688 * [00 11 22 .. nn] - byte stream
689 * "string" - If the the value doesn't start with "<" or "[", it is
690 * treated as a string. Note that the quotes are
691 * stripped by the parser before we get the string.
692 * newval: An array of strings containing the new property as specified
693 * on the command line
694 * count: The number of strings in the array
695 * data: A bytestream to be placed in the property
696 * len: The length of the resulting bytestream
698 static int fdt_parse_prop(char * const *newval
, int count
, char *data
, int *len
)
700 char *cp
; /* temporary char pointer */
701 char *newp
; /* temporary newval char pointer */
702 unsigned long tmp
; /* holds converted values */
708 /* An array of cells */
711 while ((*newp
!= '>') && (stridx
< count
)) {
713 * Keep searching until we find that last ">"
714 * That way users don't have to escape the spaces
717 newp
= newval
[++stridx
];
722 tmp
= simple_strtoul(cp
, &newp
, 0);
723 *(__be32
*)data
= __cpu_to_be32(tmp
);
727 /* If the ptr didn't advance, something went wrong */
728 if ((newp
- cp
) <= 0) {
729 printf("Sorry, I could not convert \"%s\"\n",
739 printf("Unexpected character '%c'\n", *newp
);
742 } else if (*newp
== '[') {
744 * Byte stream. Convert the values.
747 while ((stridx
< count
) && (*newp
!= ']')) {
751 newp
= newval
[++stridx
];
754 if (!isxdigit(*newp
))
756 tmp
= simple_strtoul(newp
, &newp
, 16);
757 *data
++ = tmp
& 0xFF;
761 printf("Unexpected character '%c'\n", *newp
);
766 * Assume it is one or more strings. Copy it into our
767 * data area for convenience (including the
768 * terminating '\0's).
770 while (stridx
< count
) {
771 size_t length
= strlen(newp
) + 1;
775 newp
= newval
[++stridx
];
781 /****************************************************************************/
784 * Heuristic to guess if this is a string or concatenated strings.
787 static int is_printable_string(const void *data
, int len
)
789 const char *s
= data
;
791 /* zero length is not */
795 /* must terminate with zero or '\n' */
796 if (s
[len
- 1] != '\0' && s
[len
- 1] != '\n')
799 /* printable or a null byte (concatenated strings) */
800 while (((*s
== '\0') || isprint(*s
) || isspace(*s
)) && (len
> 0)) {
802 * If we see a null, there are three possibilities:
803 * 1) If len == 1, it is the end of the string, printable
804 * 2) Next character also a null, not printable.
805 * 3) Next character not a null, continue to check.
817 /* Not the null termination, or not done yet: not printable */
818 if (*s
!= '\0' || (len
!= 0))
826 * Print the property in the best format, a heuristic guess. Print as
827 * a string, concatenated strings, a byte, word, double word, or (if all
828 * else fails) it is printed as a stream of bytes.
830 static void print_data(const void *data
, int len
)
834 /* no data, don't print */
839 * It is a string, but it may have multiple strings (embedded '\0's).
841 if (is_printable_string(data
, len
)) {
848 j
+= strlen(data
) + 1;
849 data
+= strlen(data
) + 1;
856 if (len
> CONFIG_CMD_FDT_MAX_DUMP
)
857 printf("* 0x%p [0x%08x]", data
, len
);
862 for (j
= 0, p
= data
; j
< len
/4; j
++)
863 printf("0x%08x%s", fdt32_to_cpu(p
[j
]),
864 j
< (len
/4 - 1) ? " " : "");
867 } else { /* anything else... hexdump */
868 if (len
> CONFIG_CMD_FDT_MAX_DUMP
)
869 printf("* 0x%p [0x%08x]", data
, len
);
874 for (j
= 0, s
= data
; j
< len
; j
++)
875 printf("%02x%s", s
[j
], j
< len
- 1 ? " " : "");
881 /****************************************************************************/
884 * Recursively print (a portion of) the working_fdt. The depth parameter
885 * determines how deeply nested the fdt is printed.
887 static int fdt_print(const char *pathp
, char *prop
, int depth
)
889 static char tabs
[MAX_LEVEL
+1] =
890 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
891 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
892 const void *nodep
; /* property node pointer */
893 int nodeoffset
; /* node offset from libfdt */
894 int nextoffset
; /* next node offset from libfdt */
895 uint32_t tag
; /* tag */
896 int len
; /* length of the property */
897 int level
= 0; /* keep track of nesting level */
898 const struct fdt_property
*fdt_prop
;
900 nodeoffset
= fdt_path_offset (working_fdt
, pathp
);
901 if (nodeoffset
< 0) {
903 * Not found or something else bad happened.
905 printf ("libfdt fdt_path_offset() returned %s\n",
906 fdt_strerror(nodeoffset
));
910 * The user passed in a property as well as node path.
911 * Print only the given property and then return.
914 nodep
= fdt_getprop (working_fdt
, nodeoffset
, prop
, &len
);
916 /* no property value */
917 printf("%s %s\n", pathp
, prop
);
919 } else if (len
> 0) {
920 printf("%s = ", prop
);
921 print_data (nodep
, len
);
925 printf ("libfdt fdt_getprop(): %s\n",
932 * The user passed in a node path and no property,
933 * print the node and all subnodes.
936 tag
= fdt_next_tag(working_fdt
, nodeoffset
, &nextoffset
);
939 pathp
= fdt_get_name(working_fdt
, nodeoffset
, NULL
);
940 if (level
<= depth
) {
942 pathp
= "/* NULL pointer error */";
944 pathp
= "/"; /* root is nameless */
946 &tabs
[MAX_LEVEL
- level
], pathp
);
949 if (level
>= MAX_LEVEL
) {
950 printf("Nested too deep, aborting.\n");
957 printf("%s};\n", &tabs
[MAX_LEVEL
- level
]);
959 level
= -1; /* exit the loop */
963 fdt_prop
= fdt_offset_ptr(working_fdt
, nodeoffset
,
965 pathp
= fdt_string(working_fdt
,
966 fdt32_to_cpu(fdt_prop
->nameoff
));
967 len
= fdt32_to_cpu(fdt_prop
->len
);
968 nodep
= fdt_prop
->data
;
970 printf ("libfdt fdt_getprop(): %s\n",
973 } else if (len
== 0) {
974 /* the property has no value */
977 &tabs
[MAX_LEVEL
- level
],
980 if (level
<= depth
) {
982 &tabs
[MAX_LEVEL
- level
],
984 print_data (nodep
, len
);
990 printf("%s/* NOP */\n", &tabs
[MAX_LEVEL
- level
]);
996 printf("Unknown tag 0x%08X\n", tag
);
999 nodeoffset
= nextoffset
;
1004 /********************************************************************/
1005 #ifdef CONFIG_SYS_LONGHELP
1006 static char fdt_help_text
[] =
1007 "addr [-c] <addr> [<length>] - Set the [control] fdt location to <addr>\n"
1008 #ifdef CONFIG_OF_BOARD_SETUP
1009 "fdt boardsetup - Do board-specific set up\n"
1011 "fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n"
1012 "fdt resize - Resize fdt to size + padding to 4k addr\n"
1013 "fdt print <path> [<prop>] - Recursive print starting at <path>\n"
1014 "fdt list <path> [<prop>] - Print one level starting at <path>\n"
1015 "fdt get value <var> <path> <prop> - Get <property> and store in <var>\n"
1016 "fdt get name <var> <path> <index> - Get name of node <index> and store in <var>\n"
1017 "fdt get addr <var> <path> <prop> - Get start address of <property> and store in <var>\n"
1018 "fdt get size <var> <path> [<prop>] - Get size of [<property>] or num nodes and store in <var>\n"
1019 "fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
1020 "fdt mknode <path> <node> - Create a new node after <path>\n"
1021 "fdt rm <path> [<prop>] - Delete the node or <property>\n"
1022 "fdt header - Display header info\n"
1023 "fdt bootcpu <id> - Set boot cpuid\n"
1024 "fdt memory <addr> <size> - Add/Update memory node\n"
1025 "fdt rsvmem print - Show current mem reserves\n"
1026 "fdt rsvmem add <addr> <size> - Add a mem reserve\n"
1027 "fdt rsvmem delete <index> - Delete a mem reserves\n"
1028 "fdt chosen [<start> <end>] - Add/update the /chosen branch in the tree\n"
1029 " <start>/<end> - initrd start/end addr\n"
1030 #if defined(CONFIG_FIT_SIGNATURE)
1031 "fdt checksign [<addr>] - check FIT signature\n"
1032 " <start> - addr of key blob\n"
1033 " default gd->fdt_blob\n"
1035 "NOTE: Dereference aliases by omiting the leading '/', "
1036 "e.g. fdt print ethernet0.";
1040 fdt
, 255, 0, do_fdt
,
1041 "flattened device tree utility commands", fdt_help_text