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Gerald Van Baren781e09e2007-03-31 12:22:10 -04001/*
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 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02008 * SPDX-License-Identifier: GPL-2.0+
Gerald Van Baren781e09e2007-03-31 12:22:10 -04009 */
10
11#include <common.h>
12#include <command.h>
13#include <linux/ctype.h>
14#include <linux/types.h>
Gerald Van Baren781e09e2007-03-31 12:22:10 -040015#include <asm/global_data.h>
Gerald Van Baren781e09e2007-03-31 12:22:10 -040016#include <libfdt.h>
Gerald Van Baren64dbbd42007-04-06 14:19:43 -040017#include <fdt_support.h>
Simon Glassa92fd652013-04-20 08:42:45 +000018#include <asm/io.h>
Gerald Van Baren781e09e2007-03-31 12:22:10 -040019
20#define MAX_LEVEL 32 /* how deeply nested we will go */
Gerald Van Barenfd61e552007-06-25 23:25:28 -040021#define SCRATCHPAD 1024 /* bytes of scratchpad memory */
Joe Hershbergerf0a29d42012-08-17 10:34:36 +000022#ifndef CONFIG_CMD_FDT_MAX_DUMP
23#define CONFIG_CMD_FDT_MAX_DUMP 64
24#endif
Gerald Van Baren781e09e2007-03-31 12:22:10 -040025
26/*
27 * Global data (for the gd->bd)
28 */
29DECLARE_GLOBAL_DATA_PTR;
30
Simon Glassd14da912013-04-20 08:42:42 +000031static int fdt_valid(struct fdt_header **blobp);
Wolfgang Denk54841ab2010-06-28 22:00:46 +020032static int fdt_parse_prop(char *const*newval, int count, char *data, int *len);
Kumar Galadbaf07c2007-11-21 14:07:46 -060033static int fdt_print(const char *pathp, char *prop, int depth);
Joe Hershbergerbc802952012-08-17 10:34:37 +000034static int is_printable_string(const void *data, int len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -040035
Gerald Van Baren781e09e2007-03-31 12:22:10 -040036/*
Gerald Van Barenae9e97f2008-06-10 22:15:58 -040037 * The working_fdt points to our working flattened device tree.
38 */
39struct fdt_header *working_fdt;
40
Kumar Gala54f9c862008-08-15 08:24:39 -050041void set_working_fdt_addr(void *addr)
42{
Simon Glassa92fd652013-04-20 08:42:45 +000043 void *buf;
44
45 buf = map_sysmem((ulong)addr, 0);
46 working_fdt = buf;
Simon Glassbfc59962013-02-24 17:33:21 +000047 setenv_addr("fdtaddr", addr);
Kumar Gala54f9c862008-08-15 08:24:39 -050048}
49
Gerald Van Barenae9e97f2008-06-10 22:15:58 -040050/*
Joe Hershbergerbc802952012-08-17 10:34:37 +000051 * Get a value from the fdt and format it to be set in the environment
52 */
53static int fdt_value_setenv(const void *nodep, int len, const char *var)
54{
55 if (is_printable_string(nodep, len))
56 setenv(var, (void *)nodep);
57 else if (len == 4) {
58 char buf[11];
59
60 sprintf(buf, "0x%08X", *(uint32_t *)nodep);
61 setenv(var, buf);
62 } else if (len%4 == 0 && len <= 20) {
63 /* Needed to print things like sha1 hashes. */
64 char buf[41];
65 int i;
66
67 for (i = 0; i < len; i += sizeof(unsigned int))
68 sprintf(buf + (i * 2), "%08x",
69 *(unsigned int *)(nodep + i));
70 setenv(var, buf);
71 } else {
72 printf("error: unprintable value\n");
73 return 1;
74 }
75 return 0;
76}
77
78/*
Gerald Van Baren781e09e2007-03-31 12:22:10 -040079 * Flattened Device Tree command, see the help for parameter definitions.
80 */
Kim Phillips088f1b12012-10-29 13:34:31 +000081static int do_fdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Gerald Van Baren781e09e2007-03-31 12:22:10 -040082{
Wolfgang Denk47e26b12010-07-17 01:06:04 +020083 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +000084 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -040085
Wolfgang Denk47e26b12010-07-17 01:06:04 +020086 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -040087 * Set the address of the fdt
Wolfgang Denk47e26b12010-07-17 01:06:04 +020088 */
Gerald Van Baren25114032007-05-12 09:47:25 -040089 if (argv[1][0] == 'a') {
Kumar Gala54f9c862008-08-15 08:24:39 -050090 unsigned long addr;
Simon Glass4b578652013-04-20 08:42:44 +000091 int control = 0;
92 struct fdt_header *blob;
Gerald Van Baren781e09e2007-03-31 12:22:10 -040093 /*
94 * Set the address [and length] of the fdt.
95 */
Simon Glass4b578652013-04-20 08:42:44 +000096 argc -= 2;
97 argv += 2;
98/* Temporary #ifdef - some archs don't have fdt_blob yet */
99#ifdef CONFIG_OF_CONTROL
100 if (argc && !strcmp(*argv, "-c")) {
101 control = 1;
102 argc--;
103 argv++;
104 }
105#endif
106 if (argc == 0) {
107 if (control)
108 blob = (struct fdt_header *)gd->fdt_blob;
109 else
110 blob = working_fdt;
111 if (!blob || !fdt_valid(&blob))
Kumar Gala7dbc38a2008-08-15 08:24:35 -0500112 return 1;
Simon Glass4b578652013-04-20 08:42:44 +0000113 printf("The address of the fdt is %#08lx\n",
114 control ? (ulong)blob :
115 getenv_hex("fdtaddr", 0));
Kumar Gala7dbc38a2008-08-15 08:24:35 -0500116 return 0;
117 }
118
Simon Glass4b578652013-04-20 08:42:44 +0000119 addr = simple_strtoul(argv[0], NULL, 16);
Simon Glassa92fd652013-04-20 08:42:45 +0000120 blob = map_sysmem(addr, 0);
Simon Glass4b578652013-04-20 08:42:44 +0000121 if (!fdt_valid(&blob))
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400122 return 1;
Simon Glass4b578652013-04-20 08:42:44 +0000123 if (control)
124 gd->fdt_blob = blob;
125 else
Simon Glassa92fd652013-04-20 08:42:45 +0000126 set_working_fdt_addr(blob);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400127
Simon Glass4b578652013-04-20 08:42:44 +0000128 if (argc >= 2) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400129 int len;
130 int err;
131 /*
132 * Optional new length
133 */
Simon Glass4b578652013-04-20 08:42:44 +0000134 len = simple_strtoul(argv[1], NULL, 16);
135 if (len < fdt_totalsize(blob)) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400136 printf ("New length %d < existing length %d, "
137 "ignoring.\n",
Simon Glass4b578652013-04-20 08:42:44 +0000138 len, fdt_totalsize(blob));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400139 } else {
140 /*
141 * Open in place with a new length.
142 */
Simon Glass4b578652013-04-20 08:42:44 +0000143 err = fdt_open_into(blob, blob, len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400144 if (err != 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400145 printf ("libfdt fdt_open_into(): %s\n",
146 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400147 }
148 }
149 }
150
Marek Vasute02c9452012-09-05 08:34:44 +0200151 return CMD_RET_SUCCESS;
152 }
153
154 if (!working_fdt) {
155 puts(
156 "No FDT memory address configured. Please configure\n"
157 "the FDT address via \"fdt addr <address>\" command.\n"
158 "Aborting!\n");
159 return CMD_RET_FAILURE;
160 }
161
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200162 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500163 * Move the working_fdt
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200164 */
Marek Vasute02c9452012-09-05 08:34:44 +0200165 if (strncmp(argv[1], "mo", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400166 struct fdt_header *newaddr;
167 int len;
168 int err;
169
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200170 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000171 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400172
173 /*
174 * Set the address and length of the fdt.
175 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500176 working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
Simon Glassd14da912013-04-20 08:42:42 +0000177 if (!fdt_valid(&working_fdt))
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400178 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400179
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400180 newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400181
182 /*
183 * If the user specifies a length, use that. Otherwise use the
184 * current length.
185 */
186 if (argc <= 4) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500187 len = fdt_totalsize(working_fdt);
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400188 } else {
189 len = simple_strtoul(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500190 if (len < fdt_totalsize(working_fdt)) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400191 printf ("New length 0x%X < existing length "
192 "0x%X, aborting.\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500193 len, fdt_totalsize(working_fdt));
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400194 return 1;
195 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400196 }
197
198 /*
199 * Copy to the new location.
200 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500201 err = fdt_open_into(working_fdt, newaddr, len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400202 if (err != 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400203 printf ("libfdt fdt_open_into(): %s\n",
204 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400205 return 1;
206 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500207 working_fdt = newaddr;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400208
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200209 /*
Gerald Van Baren25114032007-05-12 09:47:25 -0400210 * Make a new node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200211 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400212 } else if (strncmp(argv[1], "mk", 2) == 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400213 char *pathp; /* path */
214 char *nodep; /* new node to add */
215 int nodeoffset; /* node offset from libfdt */
216 int err;
217
218 /*
219 * Parameters: Node path, new node to be appended to the path.
220 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200221 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000222 return CMD_RET_USAGE;
Gerald Van Baren25114032007-05-12 09:47:25 -0400223
224 pathp = argv[2];
225 nodep = argv[3];
226
Kim Phillipse489b9c2008-06-10 11:06:17 -0500227 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400228 if (nodeoffset < 0) {
229 /*
230 * Not found or something else bad happened.
231 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500232 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400233 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400234 return 1;
235 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500236 err = fdt_add_subnode(working_fdt, nodeoffset, nodep);
Gerald Van Baren25114032007-05-12 09:47:25 -0400237 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400238 printf ("libfdt fdt_add_subnode(): %s\n",
239 fdt_strerror(err));
Gerald Van Baren25114032007-05-12 09:47:25 -0400240 return 1;
241 }
242
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200243 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500244 * Set the value of a property in the working_fdt.
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200245 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400246 } else if (argv[1][0] == 's') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400247 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400248 char *prop; /* property */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400249 int nodeoffset; /* node offset from libfdt */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400250 static char data[SCRATCHPAD]; /* storage for the property */
251 int len; /* new length of the property */
252 int ret; /* return value */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400253
254 /*
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500255 * Parameters: Node path, property, optional value.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400256 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200257 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000258 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400259
260 pathp = argv[2];
261 prop = argv[3];
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500262 if (argc == 4) {
263 len = 0;
264 } else {
Andy Fleming4abd8442008-03-31 20:45:56 -0500265 ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500266 if (ret != 0)
267 return ret;
268 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400269
Kim Phillipse489b9c2008-06-10 11:06:17 -0500270 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400271 if (nodeoffset < 0) {
272 /*
273 * Not found or something else bad happened.
274 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500275 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400276 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400277 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400278 }
Gerald Van Baren25114032007-05-12 09:47:25 -0400279
Kim Phillipse489b9c2008-06-10 11:06:17 -0500280 ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
Gerald Van Baren25114032007-05-12 09:47:25 -0400281 if (ret < 0) {
282 printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
283 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400284 }
285
Joe Hershbergerbc802952012-08-17 10:34:37 +0000286 /********************************************************************
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 */
297
298 /*
299 * Parameters: Node path, property, optional value.
300 */
301 if (argc < 5)
302 return CMD_RET_USAGE;
303
304 subcmd = argv[2];
305
306 if (argc < 6 && subcmd[0] != 's')
307 return CMD_RET_USAGE;
308
309 var = argv[3];
310 pathp = argv[4];
311 prop = argv[5];
312
313 nodeoffset = fdt_path_offset(working_fdt, pathp);
314 if (nodeoffset < 0) {
315 /*
316 * Not found or something else bad happened.
317 */
318 printf("libfdt fdt_path_offset() returned %s\n",
319 fdt_strerror(nodeoffset));
320 return 1;
321 }
322
323 if (subcmd[0] == 'n' || (subcmd[0] == 's' && argc == 5)) {
324 int reqIndex = -1;
325 int startDepth = fdt_node_depth(
326 working_fdt, nodeoffset);
327 int curDepth = startDepth;
328 int curIndex = -1;
329 int nextNodeOffset = fdt_next_node(
330 working_fdt, nodeoffset, &curDepth);
331
332 if (subcmd[0] == 'n')
333 reqIndex = simple_strtoul(argv[5], NULL, 16);
334
335 while (curDepth > startDepth) {
336 if (curDepth == startDepth + 1)
337 curIndex++;
338 if (subcmd[0] == 'n' && curIndex == reqIndex) {
339 const char *nodeName = fdt_get_name(
340 working_fdt, nextNodeOffset, NULL);
341
342 setenv(var, (char *)nodeName);
343 return 0;
344 }
345 nextNodeOffset = fdt_next_node(
346 working_fdt, nextNodeOffset, &curDepth);
347 if (nextNodeOffset < 0)
348 break;
349 }
350 if (subcmd[0] == 's') {
351 /* get the num nodes at this level */
Simon Glassbfc59962013-02-24 17:33:21 +0000352 setenv_ulong(var, curIndex + 1);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000353 } else {
354 /* node index not found */
355 printf("libfdt node not found\n");
356 return 1;
357 }
358 } else {
359 nodep = fdt_getprop(
360 working_fdt, nodeoffset, prop, &len);
361 if (len == 0) {
362 /* no property value */
363 setenv(var, "");
364 return 0;
365 } else if (len > 0) {
366 if (subcmd[0] == 'v') {
367 int ret;
368
369 ret = fdt_value_setenv(nodep, len, var);
370 if (ret != 0)
371 return ret;
372 } else if (subcmd[0] == 'a') {
373 /* Get address */
374 char buf[11];
375
Tom Rini085b9c32012-10-29 14:53:18 +0000376 sprintf(buf, "0x%p", nodep);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000377 setenv(var, buf);
378 } else if (subcmd[0] == 's') {
379 /* Get size */
380 char buf[11];
381
382 sprintf(buf, "0x%08X", len);
383 setenv(var, buf);
384 } else
385 return CMD_RET_USAGE;
386 return 0;
387 } else {
388 printf("libfdt fdt_getprop(): %s\n",
389 fdt_strerror(len));
390 return 1;
391 }
392 }
393
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200394 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400395 * Print (recursive) / List (single level)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200396 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400397 } else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400398 int depth = MAX_LEVEL; /* how deep to print */
399 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400400 char *prop; /* property */
401 int ret; /* return value */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500402 static char root[2] = "/";
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400403
404 /*
405 * list is an alias for print, but limited to 1 level
406 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400407 if (argv[1][0] == 'l') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400408 depth = 1;
409 }
410
411 /*
412 * Get the starting path. The root node is an oddball,
413 * the offset is zero and has no name.
414 */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500415 if (argc == 2)
416 pathp = root;
417 else
418 pathp = argv[2];
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400419 if (argc > 3)
420 prop = argv[3];
421 else
422 prop = NULL;
423
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400424 ret = fdt_print(pathp, prop, depth);
425 if (ret != 0)
426 return ret;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400427
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200428 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400429 * Remove a property/node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200430 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400431 } else if (strncmp(argv[1], "rm", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400432 int nodeoffset; /* node offset from libfdt */
433 int err;
434
435 /*
436 * Get the path. The root node is an oddball, the offset
437 * is zero and has no name.
438 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500439 nodeoffset = fdt_path_offset (working_fdt, argv[2]);
Gerald Van Baren25114032007-05-12 09:47:25 -0400440 if (nodeoffset < 0) {
441 /*
442 * Not found or something else bad happened.
443 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500444 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400445 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400446 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400447 }
448 /*
449 * Do the delete. A fourth parameter means delete a property,
450 * otherwise delete the node.
451 */
452 if (argc > 3) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500453 err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400454 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400455 printf("libfdt fdt_delprop(): %s\n",
456 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400457 return err;
458 }
459 } else {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500460 err = fdt_del_node(working_fdt, nodeoffset);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400461 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400462 printf("libfdt fdt_del_node(): %s\n",
463 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400464 return err;
465 }
466 }
Kumar Gala804887e2008-02-15 03:34:36 -0600467
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200468 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600469 * Display header info
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200470 */
Kumar Gala804887e2008-02-15 03:34:36 -0600471 } else if (argv[1][0] == 'h') {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500472 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));
Kumar Gala804887e2008-02-15 03:34:36 -0600482 printf("version:\t\t%d\n", version);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500483 printf("last_comp_version:\t%d\n",
484 fdt_last_comp_version(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600485 if (version >= 2)
486 printf("boot_cpuid_phys:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500487 fdt_boot_cpuid_phys(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600488 if (version >= 3)
489 printf("size_dt_strings:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500490 fdt_size_dt_strings(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600491 if (version >= 17)
492 printf("size_dt_struct:\t\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500493 fdt_size_dt_struct(working_fdt));
494 printf("number mem_rsv:\t\t0x%x\n",
495 fdt_num_mem_rsv(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600496 printf("\n");
497
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200498 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600499 * Set boot cpu id
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200500 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400501 } else if (strncmp(argv[1], "boo", 3) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600502 unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500503 fdt_set_boot_cpuid_phys(working_fdt, tmp);
Kumar Gala804887e2008-02-15 03:34:36 -0600504
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200505 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600506 * memory command
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200507 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400508 } else if (strncmp(argv[1], "me", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600509 uint64_t addr, size;
510 int err;
Heiko Schocher4b142fe2009-12-03 11:21:21 +0100511 addr = simple_strtoull(argv[2], NULL, 16);
512 size = simple_strtoull(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500513 err = fdt_fixup_memory(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600514 if (err < 0)
515 return err;
516
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200517 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600518 * mem reserve commands
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200519 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400520 } else if (strncmp(argv[1], "rs", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600521 if (argv[2][0] == 'p') {
522 uint64_t addr, size;
Kim Phillipse489b9c2008-06-10 11:06:17 -0500523 int total = fdt_num_mem_rsv(working_fdt);
Kumar Gala804887e2008-02-15 03:34:36 -0600524 int j, err;
525 printf("index\t\t start\t\t size\n");
526 printf("-------------------------------"
527 "-----------------\n");
528 for (j = 0; j < total; j++) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500529 err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
Kumar Gala804887e2008-02-15 03:34:36 -0600530 if (err < 0) {
531 printf("libfdt fdt_get_mem_rsv(): %s\n",
532 fdt_strerror(err));
533 return err;
534 }
535 printf(" %x\t%08x%08x\t%08x%08x\n", j,
536 (u32)(addr >> 32),
537 (u32)(addr & 0xffffffff),
538 (u32)(size >> 32),
539 (u32)(size & 0xffffffff));
540 }
541 } else if (argv[2][0] == 'a') {
542 uint64_t addr, size;
543 int err;
Kumar Gala804887e2008-02-15 03:34:36 -0600544 addr = simple_strtoull(argv[3], NULL, 16);
545 size = simple_strtoull(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500546 err = fdt_add_mem_rsv(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600547
548 if (err < 0) {
549 printf("libfdt fdt_add_mem_rsv(): %s\n",
550 fdt_strerror(err));
551 return err;
552 }
553 } else if (argv[2][0] == 'd') {
554 unsigned long idx = simple_strtoul(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500555 int err = fdt_del_mem_rsv(working_fdt, idx);
Kumar Gala804887e2008-02-15 03:34:36 -0600556
557 if (err < 0) {
558 printf("libfdt fdt_del_mem_rsv(): %s\n",
559 fdt_strerror(err));
560 return err;
561 }
562 } else {
563 /* Unrecognized command */
Simon Glass4c12eeb2011-12-10 08:44:01 +0000564 return CMD_RET_USAGE;
Kumar Gala804887e2008-02-15 03:34:36 -0600565 }
Kim Phillips99dffca2007-07-17 13:57:04 -0500566 }
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400567#ifdef CONFIG_OF_BOARD_SETUP
Kim Phillips99dffca2007-07-17 13:57:04 -0500568 /* Call the board-specific fixup routine */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400569 else if (strncmp(argv[1], "boa", 3) == 0)
Kim Phillipse489b9c2008-06-10 11:06:17 -0500570 ft_board_setup(working_fdt, gd->bd);
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400571#endif
Kim Phillips99dffca2007-07-17 13:57:04 -0500572 /* Create a chosen node */
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100573 else if (strncmp(argv[1], "cho", 3) == 0) {
Kumar Galaf953d992008-08-15 08:24:34 -0500574 unsigned long initrd_start = 0, initrd_end = 0;
575
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200576 if ((argc != 2) && (argc != 4))
Simon Glass4c12eeb2011-12-10 08:44:01 +0000577 return CMD_RET_USAGE;
Kumar Galaf953d992008-08-15 08:24:34 -0500578
579 if (argc == 4) {
580 initrd_start = simple_strtoul(argv[2], NULL, 16);
581 initrd_end = simple_strtoul(argv[3], NULL, 16);
582 }
583
Heiko Schocher56844a22008-09-11 08:11:23 +0200584 fdt_chosen(working_fdt, 1);
585 fdt_initrd(working_fdt, initrd_start, initrd_end, 1);
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100586
587#if defined(CONFIG_FIT_SIGNATURE)
588 } else if (strncmp(argv[1], "che", 3) == 0) {
589 int cfg_noffset;
590 int ret;
591 unsigned long addr;
592 struct fdt_header *blob;
593
594 if (!working_fdt)
595 return CMD_RET_FAILURE;
596
597 if (argc > 2) {
598 addr = simple_strtoul(argv[2], NULL, 16);
599 blob = map_sysmem(addr, 0);
600 } else {
601 blob = (struct fdt_header *)gd->fdt_blob;
602 }
603 if (!fdt_valid(&blob))
604 return 1;
605
606 gd->fdt_blob = blob;
607 cfg_noffset = fit_conf_get_node(working_fdt, NULL);
608 if (!cfg_noffset) {
609 printf("Could not find configuration node: %s\n",
610 fdt_strerror(cfg_noffset));
611 return CMD_RET_FAILURE;
612 }
613
614 ret = fit_config_verify(working_fdt, cfg_noffset);
615 if (ret == 1)
616 return CMD_RET_SUCCESS;
617 else
618 return CMD_RET_FAILURE;
619#endif
620
Kumar Gala40afac22008-08-15 08:24:44 -0500621 }
622 /* resize the fdt */
623 else if (strncmp(argv[1], "re", 2) == 0) {
624 fdt_resize(working_fdt);
625 }
626 else {
Kim Phillips99dffca2007-07-17 13:57:04 -0500627 /* Unrecognized command */
Simon Glass4c12eeb2011-12-10 08:44:01 +0000628 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400629 }
630
631 return 0;
632}
633
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400634/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400635
Simon Glassd14da912013-04-20 08:42:42 +0000636/**
637 * fdt_valid() - Check if an FDT is valid. If not, change it to NULL
638 *
639 * @blobp: Pointer to FDT pointer
640 * @return 1 if OK, 0 if bad (in which case *blobp is set to NULL)
641 */
642static int fdt_valid(struct fdt_header **blobp)
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400643{
Simon Glassd14da912013-04-20 08:42:42 +0000644 const void *blob = *blobp;
645 int err;
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400646
Simon Glassd14da912013-04-20 08:42:42 +0000647 if (blob == NULL) {
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400648 printf ("The address of the fdt is invalid (NULL).\n");
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400649 return 0;
650 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400651
Simon Glassd14da912013-04-20 08:42:42 +0000652 err = fdt_check_header(blob);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400653 if (err == 0)
654 return 1; /* valid */
655
656 if (err < 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400657 printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400658 /*
659 * Be more informative on bad version.
660 */
661 if (err == -FDT_ERR_BADVERSION) {
Simon Glassd14da912013-04-20 08:42:42 +0000662 if (fdt_version(blob) <
Kim Phillipse489b9c2008-06-10 11:06:17 -0500663 FDT_FIRST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700664 printf (" - too old, fdt %d < %d",
Simon Glassd14da912013-04-20 08:42:42 +0000665 fdt_version(blob),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400666 FDT_FIRST_SUPPORTED_VERSION);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400667 }
Simon Glassd14da912013-04-20 08:42:42 +0000668 if (fdt_last_comp_version(blob) >
Kim Phillipse489b9c2008-06-10 11:06:17 -0500669 FDT_LAST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700670 printf (" - too new, fdt %d > %d",
Simon Glassd14da912013-04-20 08:42:42 +0000671 fdt_version(blob),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400672 FDT_LAST_SUPPORTED_VERSION);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400673 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400674 }
675 printf("\n");
Simon Glassd14da912013-04-20 08:42:42 +0000676 *blobp = NULL;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400677 return 0;
678 }
679 return 1;
680}
681
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400682/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400683
684/*
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400685 * Parse the user's input, partially heuristic. Valid formats:
Andy Fleming4abd8442008-03-31 20:45:56 -0500686 * <0x00112233 4 05> - an array of cells. Numbers follow standard
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200687 * C conventions.
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400688 * [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.
Andy Fleming4abd8442008-03-31 20:45:56 -0500692 * newval: An array of strings containing the new property as specified
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200693 * on the command line
Andy Fleming4abd8442008-03-31 20:45:56 -0500694 * 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
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400697 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200698static int fdt_parse_prop(char * const *newval, int count, char *data, int *len)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400699{
700 char *cp; /* temporary char pointer */
Andy Fleming4abd8442008-03-31 20:45:56 -0500701 char *newp; /* temporary newval char pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400702 unsigned long tmp; /* holds converted values */
Andy Fleming4abd8442008-03-31 20:45:56 -0500703 int stridx = 0;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400704
Andy Fleming4abd8442008-03-31 20:45:56 -0500705 *len = 0;
706 newp = newval[0];
707
708 /* An array of cells */
709 if (*newp == '<') {
710 newp++;
711 while ((*newp != '>') && (stridx < count)) {
712 /*
713 * Keep searching until we find that last ">"
714 * That way users don't have to escape the spaces
715 */
716 if (*newp == '\0') {
717 newp = newval[++stridx];
718 continue;
719 }
720
721 cp = newp;
722 tmp = simple_strtoul(cp, &newp, 0);
Kim Phillips088f1b12012-10-29 13:34:31 +0000723 *(__be32 *)data = __cpu_to_be32(tmp);
Andy Fleming4abd8442008-03-31 20:45:56 -0500724 data += 4;
725 *len += 4;
726
727 /* If the ptr didn't advance, something went wrong */
728 if ((newp - cp) <= 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400729 printf("Sorry, I could not convert \"%s\"\n",
730 cp);
731 return 1;
732 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500733
734 while (*newp == ' ')
735 newp++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400736 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500737
738 if (*newp != '>') {
739 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400740 return 1;
741 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500742 } else if (*newp == '[') {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400743 /*
744 * Byte stream. Convert the values.
745 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500746 newp++;
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500747 while ((stridx < count) && (*newp != ']')) {
748 while (*newp == ' ')
749 newp++;
750 if (*newp == '\0') {
751 newp = newval[++stridx];
752 continue;
753 }
754 if (!isxdigit(*newp))
755 break;
Andy Fleming4abd8442008-03-31 20:45:56 -0500756 tmp = simple_strtoul(newp, &newp, 16);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400757 *data++ = tmp & 0xFF;
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400758 *len = *len + 1;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400759 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500760 if (*newp != ']') {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700761 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400762 return 1;
763 }
764 } else {
765 /*
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500766 * Assume it is one or more strings. Copy it into our
767 * data area for convenience (including the
768 * terminating '\0's).
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400769 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500770 while (stridx < count) {
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500771 size_t length = strlen(newp) + 1;
Andy Fleming4abd8442008-03-31 20:45:56 -0500772 strcpy(data, newp);
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500773 data += length;
774 *len += length;
Andy Fleming4abd8442008-03-31 20:45:56 -0500775 newp = newval[++stridx];
776 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400777 }
778 return 0;
779}
780
781/****************************************************************************/
782
783/*
784 * Heuristic to guess if this is a string or concatenated strings.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400785 */
786
787static int is_printable_string(const void *data, int len)
788{
789 const char *s = data;
790
791 /* zero length is not */
792 if (len == 0)
793 return 0;
794
Joe Hershberger8805bee2012-08-17 10:34:38 +0000795 /* must terminate with zero or '\n' */
796 if (s[len - 1] != '\0' && s[len - 1] != '\n')
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400797 return 0;
798
799 /* printable or a null byte (concatenated strings) */
Joe Hershberger8805bee2012-08-17 10:34:38 +0000800 while (((*s == '\0') || isprint(*s) || isspace(*s)) && (len > 0)) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400801 /*
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.
806 */
807 if (s[0] == '\0') {
808 if (len == 1)
809 return 1;
810 if (s[1] == '\0')
811 return 0;
812 }
813 s++;
814 len--;
815 }
816
817 /* Not the null termination, or not done yet: not printable */
818 if (*s != '\0' || (len != 0))
819 return 0;
820
821 return 1;
822}
823
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400824
825/*
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.
829 */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400830static void print_data(const void *data, int len)
831{
832 int j;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400833
834 /* no data, don't print */
835 if (len == 0)
836 return;
837
838 /*
839 * It is a string, but it may have multiple strings (embedded '\0's).
840 */
841 if (is_printable_string(data, len)) {
842 puts("\"");
843 j = 0;
844 while (j < len) {
845 if (j > 0)
846 puts("\", \"");
847 puts(data);
848 j += strlen(data) + 1;
849 data += strlen(data) + 1;
850 }
851 puts("\"");
852 return;
853 }
854
Andy Fleming4abd8442008-03-31 20:45:56 -0500855 if ((len %4) == 0) {
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000856 if (len > CONFIG_CMD_FDT_MAX_DUMP)
Tom Rini085b9c32012-10-29 14:53:18 +0000857 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000858 else {
Kim Phillips088f1b12012-10-29 13:34:31 +0000859 const __be32 *p;
Andy Fleming4abd8442008-03-31 20:45:56 -0500860
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000861 printf("<");
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) ? " " : "");
865 printf(">");
866 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500867 } else { /* anything else... hexdump */
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000868 if (len > CONFIG_CMD_FDT_MAX_DUMP)
Tom Rini085b9c32012-10-29 14:53:18 +0000869 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000870 else {
871 const u8 *s;
Andy Fleming4abd8442008-03-31 20:45:56 -0500872
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000873 printf("[");
874 for (j = 0, s = data; j < len; j++)
875 printf("%02x%s", s[j], j < len - 1 ? " " : "");
876 printf("]");
877 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400878 }
879}
880
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400881/****************************************************************************/
882
883/*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500884 * Recursively print (a portion of) the working_fdt. The depth parameter
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400885 * determines how deeply nested the fdt is printed.
886 */
Kumar Galadbaf07c2007-11-21 14:07:46 -0600887static int fdt_print(const char *pathp, char *prop, int depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400888{
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400889 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";
Kumar Galadbaf07c2007-11-21 14:07:46 -0600892 const void *nodep; /* property node pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400893 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 */
Gerald Van Baren91623522007-11-22 17:23:23 -0500898 const struct fdt_property *fdt_prop;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400899
Kim Phillipse489b9c2008-06-10 11:06:17 -0500900 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400901 if (nodeoffset < 0) {
902 /*
903 * Not found or something else bad happened.
904 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500905 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400906 fdt_strerror(nodeoffset));
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400907 return 1;
908 }
909 /*
910 * The user passed in a property as well as node path.
911 * Print only the given property and then return.
912 */
913 if (prop) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500914 nodep = fdt_getprop (working_fdt, nodeoffset, prop, &len);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400915 if (len == 0) {
916 /* no property value */
917 printf("%s %s\n", pathp, prop);
918 return 0;
919 } else if (len > 0) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -0500920 printf("%s = ", prop);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400921 print_data (nodep, len);
922 printf("\n");
923 return 0;
924 } else {
925 printf ("libfdt fdt_getprop(): %s\n",
926 fdt_strerror(len));
927 return 1;
928 }
929 }
930
931 /*
932 * The user passed in a node path and no property,
933 * print the node and all subnodes.
934 */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400935 while(level >= 0) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500936 tag = fdt_next_tag(working_fdt, nodeoffset, &nextoffset);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400937 switch(tag) {
938 case FDT_BEGIN_NODE:
Kim Phillipse489b9c2008-06-10 11:06:17 -0500939 pathp = fdt_get_name(working_fdt, nodeoffset, NULL);
Gerald Van Baren91623522007-11-22 17:23:23 -0500940 if (level <= depth) {
941 if (pathp == NULL)
942 pathp = "/* NULL pointer error */";
943 if (*pathp == '\0')
944 pathp = "/"; /* root is nameless */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400945 printf("%s%s {\n",
946 &tabs[MAX_LEVEL - level], pathp);
Gerald Van Baren91623522007-11-22 17:23:23 -0500947 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400948 level++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400949 if (level >= MAX_LEVEL) {
Gerald Van Baren91623522007-11-22 17:23:23 -0500950 printf("Nested too deep, aborting.\n");
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400951 return 1;
952 }
953 break;
954 case FDT_END_NODE:
955 level--;
Gerald Van Baren91623522007-11-22 17:23:23 -0500956 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400957 printf("%s};\n", &tabs[MAX_LEVEL - level]);
958 if (level == 0) {
959 level = -1; /* exit the loop */
960 }
961 break;
962 case FDT_PROP:
Kim Phillipse489b9c2008-06-10 11:06:17 -0500963 fdt_prop = fdt_offset_ptr(working_fdt, nodeoffset,
Gerald Van Baren91623522007-11-22 17:23:23 -0500964 sizeof(*fdt_prop));
Kim Phillipse489b9c2008-06-10 11:06:17 -0500965 pathp = fdt_string(working_fdt,
Gerald Van Baren91623522007-11-22 17:23:23 -0500966 fdt32_to_cpu(fdt_prop->nameoff));
967 len = fdt32_to_cpu(fdt_prop->len);
968 nodep = fdt_prop->data;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400969 if (len < 0) {
970 printf ("libfdt fdt_getprop(): %s\n",
971 fdt_strerror(len));
972 return 1;
973 } else if (len == 0) {
974 /* the property has no value */
Gerald Van Baren91623522007-11-22 17:23:23 -0500975 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400976 printf("%s%s;\n",
977 &tabs[MAX_LEVEL - level],
978 pathp);
979 } else {
Gerald Van Baren91623522007-11-22 17:23:23 -0500980 if (level <= depth) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -0500981 printf("%s%s = ",
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400982 &tabs[MAX_LEVEL - level],
983 pathp);
984 print_data (nodep, len);
985 printf(";\n");
986 }
987 }
988 break;
989 case FDT_NOP:
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700990 printf("%s/* NOP */\n", &tabs[MAX_LEVEL - level]);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400991 break;
992 case FDT_END:
993 return 1;
994 default:
Gerald Van Baren91623522007-11-22 17:23:23 -0500995 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400996 printf("Unknown tag 0x%08X\n", tag);
997 return 1;
998 }
999 nodeoffset = nextoffset;
1000 }
1001 return 0;
1002}
1003
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001004/********************************************************************/
Kim Phillips088f1b12012-10-29 13:34:31 +00001005#ifdef CONFIG_SYS_LONGHELP
1006static char fdt_help_text[] =
Simon Glass4b578652013-04-20 08:42:44 +00001007 "addr [-c] <addr> [<length>] - Set the [control] fdt location to <addr>\n"
Gerald Van Barenfd61e552007-06-25 23:25:28 -04001008#ifdef CONFIG_OF_BOARD_SETUP
1009 "fdt boardsetup - Do board-specific set up\n"
1010#endif
Gerald Van Baren238cb7a2008-01-05 15:33:29 -05001011 "fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n"
Kumar Gala40afac22008-08-15 08:24:44 -05001012 "fdt resize - Resize fdt to size + padding to 4k addr\n"
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001013 "fdt print <path> [<prop>] - Recursive print starting at <path>\n"
1014 "fdt list <path> [<prop>] - Print one level starting at <path>\n"
Joe Hershbergerbc802952012-08-17 10:34:37 +00001015 "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"
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001019 "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"
Kumar Gala804887e2008-02-15 03:34:36 -06001022 "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"
Kumar Galaf953d992008-08-15 08:24:34 -05001028 "fdt chosen [<start> <end>] - Add/update the /chosen branch in the tree\n"
1029 " <start>/<end> - initrd start/end addr\n"
Heiko Schocher097dd3e2014-03-03 12:19:24 +01001030#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"
1034#endif
Gerald Van Baren109c30f2008-08-22 14:37:05 -04001035 "NOTE: Dereference aliases by omiting the leading '/', "
Kim Phillips088f1b12012-10-29 13:34:31 +00001036 "e.g. fdt print ethernet0.";
1037#endif
1038
1039U_BOOT_CMD(
1040 fdt, 255, 0, do_fdt,
1041 "flattened device tree utility commands", fdt_help_text
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001042);