blob: 95dd673b957e45dca344367fe2f3c1d682f28418 [file] [log] [blame]
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>
Joe Hershberger0eb25b62015-03-22 17:08:59 -050018#include <mapmem.h>
Simon Glassa92fd652013-04-20 08:42:45 +000019#include <asm/io.h>
Gerald Van Baren781e09e2007-03-31 12:22:10 -040020
21#define MAX_LEVEL 32 /* how deeply nested we will go */
Gerald Van Barenfd61e552007-06-25 23:25:28 -040022#define SCRATCHPAD 1024 /* bytes of scratchpad memory */
Joe Hershbergerf0a29d42012-08-17 10:34:36 +000023#ifndef CONFIG_CMD_FDT_MAX_DUMP
24#define CONFIG_CMD_FDT_MAX_DUMP 64
25#endif
Gerald Van Baren781e09e2007-03-31 12:22:10 -040026
27/*
28 * Global data (for the gd->bd)
29 */
30DECLARE_GLOBAL_DATA_PTR;
31
Simon Glassd14da912013-04-20 08:42:42 +000032static int fdt_valid(struct fdt_header **blobp);
Wolfgang Denk54841ab2010-06-28 22:00:46 +020033static int fdt_parse_prop(char *const*newval, int count, char *data, int *len);
Kumar Galadbaf07c2007-11-21 14:07:46 -060034static int fdt_print(const char *pathp, char *prop, int depth);
Joe Hershbergerbc802952012-08-17 10:34:37 +000035static int is_printable_string(const void *data, int len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -040036
Gerald Van Baren781e09e2007-03-31 12:22:10 -040037/*
Gerald Van Barenae9e97f2008-06-10 22:15:58 -040038 * The working_fdt points to our working flattened device tree.
39 */
40struct fdt_header *working_fdt;
41
Joe Hershberger90fbee32015-02-04 21:56:53 -060042void set_working_fdt_addr(ulong addr)
Kumar Gala54f9c862008-08-15 08:24:39 -050043{
Simon Glassa92fd652013-04-20 08:42:45 +000044 void *buf;
45
Joe Hershberger90fbee32015-02-04 21:56:53 -060046 buf = map_sysmem(addr, 0);
Simon Glassa92fd652013-04-20 08:42:45 +000047 working_fdt = buf;
Sudeep Holla8a133bb2015-07-10 17:18:44 +010048 setenv_hex("fdtaddr", addr);
Kumar Gala54f9c862008-08-15 08:24:39 -050049}
50
Gerald Van Barenae9e97f2008-06-10 22:15:58 -040051/*
Joe Hershbergerbc802952012-08-17 10:34:37 +000052 * Get a value from the fdt and format it to be set in the environment
53 */
54static int fdt_value_setenv(const void *nodep, int len, const char *var)
55{
56 if (is_printable_string(nodep, len))
57 setenv(var, (void *)nodep);
58 else if (len == 4) {
59 char buf[11];
60
Andreas Färberb05bf6c2017-01-09 16:08:02 +010061 sprintf(buf, "0x%08X", fdt32_to_cpu(*(fdt32_t *)nodep));
Joe Hershbergerbc802952012-08-17 10:34:37 +000062 setenv(var, buf);
63 } else if (len%4 == 0 && len <= 20) {
64 /* Needed to print things like sha1 hashes. */
65 char buf[41];
66 int i;
67
68 for (i = 0; i < len; i += sizeof(unsigned int))
69 sprintf(buf + (i * 2), "%08x",
70 *(unsigned int *)(nodep + i));
71 setenv(var, buf);
72 } else {
73 printf("error: unprintable value\n");
74 return 1;
75 }
76 return 0;
77}
78
79/*
Gerald Van Baren781e09e2007-03-31 12:22:10 -040080 * Flattened Device Tree command, see the help for parameter definitions.
81 */
Kim Phillips088f1b12012-10-29 13:34:31 +000082static int do_fdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Gerald Van Baren781e09e2007-03-31 12:22:10 -040083{
Wolfgang Denk47e26b12010-07-17 01:06:04 +020084 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +000085 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -040086
Wolfgang Denk47e26b12010-07-17 01:06:04 +020087 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -040088 * Set the address of the fdt
Wolfgang Denk47e26b12010-07-17 01:06:04 +020089 */
Maxime Ripardf0ed68e2016-07-05 10:26:34 +020090 if (strncmp(argv[1], "ad", 2) == 0) {
Kumar Gala54f9c862008-08-15 08:24:39 -050091 unsigned long addr;
Simon Glass4b578652013-04-20 08:42:44 +000092 int control = 0;
93 struct fdt_header *blob;
Gerald Van Baren781e09e2007-03-31 12:22:10 -040094 /*
95 * Set the address [and length] of the fdt.
96 */
Simon Glass4b578652013-04-20 08:42:44 +000097 argc -= 2;
98 argv += 2;
99/* Temporary #ifdef - some archs don't have fdt_blob yet */
100#ifdef CONFIG_OF_CONTROL
101 if (argc && !strcmp(*argv, "-c")) {
102 control = 1;
103 argc--;
104 argv++;
105 }
106#endif
107 if (argc == 0) {
108 if (control)
109 blob = (struct fdt_header *)gd->fdt_blob;
110 else
111 blob = working_fdt;
112 if (!blob || !fdt_valid(&blob))
Kumar Gala7dbc38a2008-08-15 08:24:35 -0500113 return 1;
Simon Glass4b578652013-04-20 08:42:44 +0000114 printf("The address of the fdt is %#08lx\n",
Joe Hershbergerc71a0162015-02-04 21:56:54 -0600115 control ? (ulong)map_to_sysmem(blob) :
Simon Glass4b578652013-04-20 08:42:44 +0000116 getenv_hex("fdtaddr", 0));
Kumar Gala7dbc38a2008-08-15 08:24:35 -0500117 return 0;
118 }
119
Simon Glass4b578652013-04-20 08:42:44 +0000120 addr = simple_strtoul(argv[0], NULL, 16);
Simon Glassa92fd652013-04-20 08:42:45 +0000121 blob = map_sysmem(addr, 0);
Simon Glass4b578652013-04-20 08:42:44 +0000122 if (!fdt_valid(&blob))
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400123 return 1;
Simon Glass4b578652013-04-20 08:42:44 +0000124 if (control)
125 gd->fdt_blob = blob;
126 else
Joe Hershberger90fbee32015-02-04 21:56:53 -0600127 set_working_fdt_addr(addr);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400128
Simon Glass4b578652013-04-20 08:42:44 +0000129 if (argc >= 2) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400130 int len;
131 int err;
132 /*
133 * Optional new length
134 */
Simon Glass4b578652013-04-20 08:42:44 +0000135 len = simple_strtoul(argv[1], NULL, 16);
136 if (len < fdt_totalsize(blob)) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400137 printf ("New length %d < existing length %d, "
138 "ignoring.\n",
Simon Glass4b578652013-04-20 08:42:44 +0000139 len, fdt_totalsize(blob));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400140 } else {
141 /*
142 * Open in place with a new length.
143 */
Simon Glass4b578652013-04-20 08:42:44 +0000144 err = fdt_open_into(blob, blob, len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400145 if (err != 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400146 printf ("libfdt fdt_open_into(): %s\n",
147 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400148 }
149 }
150 }
151
Marek Vasute02c9452012-09-05 08:34:44 +0200152 return CMD_RET_SUCCESS;
153 }
154
155 if (!working_fdt) {
156 puts(
157 "No FDT memory address configured. Please configure\n"
158 "the FDT address via \"fdt addr <address>\" command.\n"
159 "Aborting!\n");
160 return CMD_RET_FAILURE;
161 }
162
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200163 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500164 * Move the working_fdt
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200165 */
Marek Vasute02c9452012-09-05 08:34:44 +0200166 if (strncmp(argv[1], "mo", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400167 struct fdt_header *newaddr;
168 int len;
169 int err;
170
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200171 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000172 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400173
174 /*
175 * Set the address and length of the fdt.
176 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500177 working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
Simon Glassd14da912013-04-20 08:42:42 +0000178 if (!fdt_valid(&working_fdt))
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400179 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400180
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400181 newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400182
183 /*
184 * If the user specifies a length, use that. Otherwise use the
185 * current length.
186 */
187 if (argc <= 4) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500188 len = fdt_totalsize(working_fdt);
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400189 } else {
190 len = simple_strtoul(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500191 if (len < fdt_totalsize(working_fdt)) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400192 printf ("New length 0x%X < existing length "
193 "0x%X, aborting.\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500194 len, fdt_totalsize(working_fdt));
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400195 return 1;
196 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400197 }
198
199 /*
200 * Copy to the new location.
201 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500202 err = fdt_open_into(working_fdt, newaddr, len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400203 if (err != 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400204 printf ("libfdt fdt_open_into(): %s\n",
205 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400206 return 1;
207 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500208 working_fdt = newaddr;
Fabien Parentf7f191e2016-11-24 15:02:18 +0100209#ifdef CONFIG_OF_SYSTEM_SETUP
210 /* Call the board-specific fixup routine */
211 } else if (strncmp(argv[1], "sys", 3) == 0) {
212 int err = ft_system_setup(working_fdt, gd->bd);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400213
Fabien Parentf7f191e2016-11-24 15:02:18 +0100214 if (err) {
215 printf("Failed to add system information to FDT: %s\n",
216 fdt_strerror(err));
217 return CMD_RET_FAILURE;
218 }
219#endif
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200220 /*
Gerald Van Baren25114032007-05-12 09:47:25 -0400221 * Make a new node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200222 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400223 } else if (strncmp(argv[1], "mk", 2) == 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400224 char *pathp; /* path */
225 char *nodep; /* new node to add */
226 int nodeoffset; /* node offset from libfdt */
227 int err;
228
229 /*
230 * Parameters: Node path, new node to be appended to the path.
231 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200232 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000233 return CMD_RET_USAGE;
Gerald Van Baren25114032007-05-12 09:47:25 -0400234
235 pathp = argv[2];
236 nodep = argv[3];
237
Kim Phillipse489b9c2008-06-10 11:06:17 -0500238 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400239 if (nodeoffset < 0) {
240 /*
241 * Not found or something else bad happened.
242 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500243 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400244 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400245 return 1;
246 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500247 err = fdt_add_subnode(working_fdt, nodeoffset, nodep);
Gerald Van Baren25114032007-05-12 09:47:25 -0400248 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400249 printf ("libfdt fdt_add_subnode(): %s\n",
250 fdt_strerror(err));
Gerald Van Baren25114032007-05-12 09:47:25 -0400251 return 1;
252 }
253
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200254 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500255 * Set the value of a property in the working_fdt.
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200256 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400257 } else if (argv[1][0] == 's') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400258 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400259 char *prop; /* property */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400260 int nodeoffset; /* node offset from libfdt */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400261 static char data[SCRATCHPAD]; /* storage for the property */
262 int len; /* new length of the property */
263 int ret; /* return value */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400264
265 /*
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500266 * Parameters: Node path, property, optional value.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400267 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200268 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000269 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400270
271 pathp = argv[2];
272 prop = argv[3];
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500273 if (argc == 4) {
274 len = 0;
275 } else {
Andy Fleming4abd8442008-03-31 20:45:56 -0500276 ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500277 if (ret != 0)
278 return ret;
279 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400280
Kim Phillipse489b9c2008-06-10 11:06:17 -0500281 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400282 if (nodeoffset < 0) {
283 /*
284 * Not found or something else bad happened.
285 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500286 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400287 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400288 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400289 }
Gerald Van Baren25114032007-05-12 09:47:25 -0400290
Kim Phillipse489b9c2008-06-10 11:06:17 -0500291 ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
Gerald Van Baren25114032007-05-12 09:47:25 -0400292 if (ret < 0) {
293 printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
294 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400295 }
296
Joe Hershbergerbc802952012-08-17 10:34:37 +0000297 /********************************************************************
298 * Get the value of a property in the working_fdt.
299 ********************************************************************/
300 } else if (argv[1][0] == 'g') {
301 char *subcmd; /* sub-command */
302 char *pathp; /* path */
303 char *prop; /* property */
304 char *var; /* variable to store result */
305 int nodeoffset; /* node offset from libfdt */
306 const void *nodep; /* property node pointer */
307 int len = 0; /* new length of the property */
308
309 /*
310 * Parameters: Node path, property, optional value.
311 */
312 if (argc < 5)
313 return CMD_RET_USAGE;
314
315 subcmd = argv[2];
316
317 if (argc < 6 && subcmd[0] != 's')
318 return CMD_RET_USAGE;
319
320 var = argv[3];
321 pathp = argv[4];
322 prop = argv[5];
323
324 nodeoffset = fdt_path_offset(working_fdt, pathp);
325 if (nodeoffset < 0) {
326 /*
327 * Not found or something else bad happened.
328 */
329 printf("libfdt fdt_path_offset() returned %s\n",
330 fdt_strerror(nodeoffset));
331 return 1;
332 }
333
334 if (subcmd[0] == 'n' || (subcmd[0] == 's' && argc == 5)) {
335 int reqIndex = -1;
336 int startDepth = fdt_node_depth(
337 working_fdt, nodeoffset);
338 int curDepth = startDepth;
339 int curIndex = -1;
340 int nextNodeOffset = fdt_next_node(
341 working_fdt, nodeoffset, &curDepth);
342
343 if (subcmd[0] == 'n')
344 reqIndex = simple_strtoul(argv[5], NULL, 16);
345
346 while (curDepth > startDepth) {
347 if (curDepth == startDepth + 1)
348 curIndex++;
349 if (subcmd[0] == 'n' && curIndex == reqIndex) {
350 const char *nodeName = fdt_get_name(
351 working_fdt, nextNodeOffset, NULL);
352
353 setenv(var, (char *)nodeName);
354 return 0;
355 }
356 nextNodeOffset = fdt_next_node(
357 working_fdt, nextNodeOffset, &curDepth);
358 if (nextNodeOffset < 0)
359 break;
360 }
361 if (subcmd[0] == 's') {
362 /* get the num nodes at this level */
Simon Glassbfc59962013-02-24 17:33:21 +0000363 setenv_ulong(var, curIndex + 1);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000364 } else {
365 /* node index not found */
366 printf("libfdt node not found\n");
367 return 1;
368 }
369 } else {
370 nodep = fdt_getprop(
371 working_fdt, nodeoffset, prop, &len);
372 if (len == 0) {
373 /* no property value */
374 setenv(var, "");
375 return 0;
376 } else if (len > 0) {
377 if (subcmd[0] == 'v') {
378 int ret;
379
380 ret = fdt_value_setenv(nodep, len, var);
381 if (ret != 0)
382 return ret;
383 } else if (subcmd[0] == 'a') {
384 /* Get address */
385 char buf[11];
386
Tom Rini085b9c32012-10-29 14:53:18 +0000387 sprintf(buf, "0x%p", nodep);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000388 setenv(var, buf);
389 } else if (subcmd[0] == 's') {
390 /* Get size */
391 char buf[11];
392
393 sprintf(buf, "0x%08X", len);
394 setenv(var, buf);
395 } else
396 return CMD_RET_USAGE;
397 return 0;
398 } else {
399 printf("libfdt fdt_getprop(): %s\n",
400 fdt_strerror(len));
401 return 1;
402 }
403 }
404
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200405 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400406 * Print (recursive) / List (single level)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200407 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400408 } else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400409 int depth = MAX_LEVEL; /* how deep to print */
410 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400411 char *prop; /* property */
412 int ret; /* return value */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500413 static char root[2] = "/";
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400414
415 /*
416 * list is an alias for print, but limited to 1 level
417 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400418 if (argv[1][0] == 'l') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400419 depth = 1;
420 }
421
422 /*
423 * Get the starting path. The root node is an oddball,
424 * the offset is zero and has no name.
425 */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500426 if (argc == 2)
427 pathp = root;
428 else
429 pathp = argv[2];
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400430 if (argc > 3)
431 prop = argv[3];
432 else
433 prop = NULL;
434
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400435 ret = fdt_print(pathp, prop, depth);
436 if (ret != 0)
437 return ret;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400438
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200439 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400440 * Remove a property/node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200441 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400442 } else if (strncmp(argv[1], "rm", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400443 int nodeoffset; /* node offset from libfdt */
444 int err;
445
446 /*
447 * Get the path. The root node is an oddball, the offset
448 * is zero and has no name.
449 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500450 nodeoffset = fdt_path_offset (working_fdt, argv[2]);
Gerald Van Baren25114032007-05-12 09:47:25 -0400451 if (nodeoffset < 0) {
452 /*
453 * Not found or something else bad happened.
454 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500455 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400456 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400457 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400458 }
459 /*
460 * Do the delete. A fourth parameter means delete a property,
461 * otherwise delete the node.
462 */
463 if (argc > 3) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500464 err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400465 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400466 printf("libfdt fdt_delprop(): %s\n",
467 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400468 return err;
469 }
470 } else {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500471 err = fdt_del_node(working_fdt, nodeoffset);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400472 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400473 printf("libfdt fdt_del_node(): %s\n",
474 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400475 return err;
476 }
477 }
Kumar Gala804887e2008-02-15 03:34:36 -0600478
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200479 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600480 * Display header info
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200481 */
Kumar Gala804887e2008-02-15 03:34:36 -0600482 } else if (argv[1][0] == 'h') {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500483 u32 version = fdt_version(working_fdt);
484 printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
485 printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
486 fdt_totalsize(working_fdt));
487 printf("off_dt_struct:\t\t0x%x\n",
488 fdt_off_dt_struct(working_fdt));
489 printf("off_dt_strings:\t\t0x%x\n",
490 fdt_off_dt_strings(working_fdt));
491 printf("off_mem_rsvmap:\t\t0x%x\n",
492 fdt_off_mem_rsvmap(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600493 printf("version:\t\t%d\n", version);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500494 printf("last_comp_version:\t%d\n",
495 fdt_last_comp_version(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600496 if (version >= 2)
497 printf("boot_cpuid_phys:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500498 fdt_boot_cpuid_phys(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600499 if (version >= 3)
500 printf("size_dt_strings:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500501 fdt_size_dt_strings(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600502 if (version >= 17)
503 printf("size_dt_struct:\t\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500504 fdt_size_dt_struct(working_fdt));
505 printf("number mem_rsv:\t\t0x%x\n",
506 fdt_num_mem_rsv(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600507 printf("\n");
508
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200509 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600510 * Set boot cpu id
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200511 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400512 } else if (strncmp(argv[1], "boo", 3) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600513 unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500514 fdt_set_boot_cpuid_phys(working_fdt, tmp);
Kumar Gala804887e2008-02-15 03:34:36 -0600515
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200516 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600517 * memory command
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200518 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400519 } else if (strncmp(argv[1], "me", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600520 uint64_t addr, size;
521 int err;
Heiko Schocher4b142fe2009-12-03 11:21:21 +0100522 addr = simple_strtoull(argv[2], NULL, 16);
523 size = simple_strtoull(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500524 err = fdt_fixup_memory(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600525 if (err < 0)
526 return err;
527
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200528 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600529 * mem reserve commands
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200530 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400531 } else if (strncmp(argv[1], "rs", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600532 if (argv[2][0] == 'p') {
533 uint64_t addr, size;
Kim Phillipse489b9c2008-06-10 11:06:17 -0500534 int total = fdt_num_mem_rsv(working_fdt);
Kumar Gala804887e2008-02-15 03:34:36 -0600535 int j, err;
536 printf("index\t\t start\t\t size\n");
537 printf("-------------------------------"
538 "-----------------\n");
539 for (j = 0; j < total; j++) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500540 err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
Kumar Gala804887e2008-02-15 03:34:36 -0600541 if (err < 0) {
542 printf("libfdt fdt_get_mem_rsv(): %s\n",
543 fdt_strerror(err));
544 return err;
545 }
546 printf(" %x\t%08x%08x\t%08x%08x\n", j,
547 (u32)(addr >> 32),
548 (u32)(addr & 0xffffffff),
549 (u32)(size >> 32),
550 (u32)(size & 0xffffffff));
551 }
552 } else if (argv[2][0] == 'a') {
553 uint64_t addr, size;
554 int err;
Kumar Gala804887e2008-02-15 03:34:36 -0600555 addr = simple_strtoull(argv[3], NULL, 16);
556 size = simple_strtoull(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500557 err = fdt_add_mem_rsv(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600558
559 if (err < 0) {
560 printf("libfdt fdt_add_mem_rsv(): %s\n",
561 fdt_strerror(err));
562 return err;
563 }
564 } else if (argv[2][0] == 'd') {
565 unsigned long idx = simple_strtoul(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500566 int err = fdt_del_mem_rsv(working_fdt, idx);
Kumar Gala804887e2008-02-15 03:34:36 -0600567
568 if (err < 0) {
569 printf("libfdt fdt_del_mem_rsv(): %s\n",
570 fdt_strerror(err));
571 return err;
572 }
573 } else {
574 /* Unrecognized command */
Simon Glass4c12eeb2011-12-10 08:44:01 +0000575 return CMD_RET_USAGE;
Kumar Gala804887e2008-02-15 03:34:36 -0600576 }
Kim Phillips99dffca2007-07-17 13:57:04 -0500577 }
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400578#ifdef CONFIG_OF_BOARD_SETUP
Kim Phillips99dffca2007-07-17 13:57:04 -0500579 /* Call the board-specific fixup routine */
Simon Glass4ba98dc2014-10-23 18:58:48 -0600580 else if (strncmp(argv[1], "boa", 3) == 0) {
581 int err = ft_board_setup(working_fdt, gd->bd);
582
583 if (err) {
584 printf("Failed to update board information in FDT: %s\n",
585 fdt_strerror(err));
586 return CMD_RET_FAILURE;
587 }
588 }
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400589#endif
Kim Phillips99dffca2007-07-17 13:57:04 -0500590 /* Create a chosen node */
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100591 else if (strncmp(argv[1], "cho", 3) == 0) {
Kumar Galaf953d992008-08-15 08:24:34 -0500592 unsigned long initrd_start = 0, initrd_end = 0;
593
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200594 if ((argc != 2) && (argc != 4))
Simon Glass4c12eeb2011-12-10 08:44:01 +0000595 return CMD_RET_USAGE;
Kumar Galaf953d992008-08-15 08:24:34 -0500596
597 if (argc == 4) {
598 initrd_start = simple_strtoul(argv[2], NULL, 16);
599 initrd_end = simple_strtoul(argv[3], NULL, 16);
600 }
601
Masahiro Yamadabc6ed0f2014-04-18 17:41:00 +0900602 fdt_chosen(working_fdt);
Masahiro Yamadadbe963a2014-04-18 17:40:59 +0900603 fdt_initrd(working_fdt, initrd_start, initrd_end);
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100604
605#if defined(CONFIG_FIT_SIGNATURE)
606 } else if (strncmp(argv[1], "che", 3) == 0) {
607 int cfg_noffset;
608 int ret;
609 unsigned long addr;
610 struct fdt_header *blob;
611
612 if (!working_fdt)
613 return CMD_RET_FAILURE;
614
615 if (argc > 2) {
616 addr = simple_strtoul(argv[2], NULL, 16);
617 blob = map_sysmem(addr, 0);
618 } else {
619 blob = (struct fdt_header *)gd->fdt_blob;
620 }
621 if (!fdt_valid(&blob))
622 return 1;
623
624 gd->fdt_blob = blob;
625 cfg_noffset = fit_conf_get_node(working_fdt, NULL);
626 if (!cfg_noffset) {
627 printf("Could not find configuration node: %s\n",
628 fdt_strerror(cfg_noffset));
629 return CMD_RET_FAILURE;
630 }
631
632 ret = fit_config_verify(working_fdt, cfg_noffset);
Simon Glass12df2ab2014-06-12 07:24:45 -0600633 if (ret == 0)
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100634 return CMD_RET_SUCCESS;
635 else
636 return CMD_RET_FAILURE;
637#endif
638
Kumar Gala40afac22008-08-15 08:24:44 -0500639 }
Maxime Riparde6628ad2016-07-05 10:26:45 +0200640#ifdef CONFIG_OF_LIBFDT_OVERLAY
641 /* apply an overlay */
642 else if (strncmp(argv[1], "ap", 2) == 0) {
643 unsigned long addr;
644 struct fdt_header *blob;
Stefan Agner082b1412016-12-20 15:58:45 +0100645 int ret;
Maxime Riparde6628ad2016-07-05 10:26:45 +0200646
647 if (argc != 3)
648 return CMD_RET_USAGE;
649
650 if (!working_fdt)
651 return CMD_RET_FAILURE;
652
653 addr = simple_strtoul(argv[2], NULL, 16);
654 blob = map_sysmem(addr, 0);
655 if (!fdt_valid(&blob))
656 return CMD_RET_FAILURE;
657
Stefan Agner082b1412016-12-20 15:58:45 +0100658 ret = fdt_overlay_apply(working_fdt, blob);
659 if (ret) {
660 printf("fdt_overlay_apply(): %s\n", fdt_strerror(ret));
Maxime Riparde6628ad2016-07-05 10:26:45 +0200661 return CMD_RET_FAILURE;
Stefan Agner082b1412016-12-20 15:58:45 +0100662 }
Maxime Riparde6628ad2016-07-05 10:26:45 +0200663 }
664#endif
Kumar Gala40afac22008-08-15 08:24:44 -0500665 /* resize the fdt */
666 else if (strncmp(argv[1], "re", 2) == 0) {
Hannes Schmelzeref476832016-09-20 18:10:43 +0200667 uint extrasize;
668 if (argc > 2)
669 extrasize = simple_strtoul(argv[2], NULL, 16);
670 else
671 extrasize = 0;
672 fdt_shrink_to_minimum(working_fdt, extrasize);
Kumar Gala40afac22008-08-15 08:24:44 -0500673 }
674 else {
Kim Phillips99dffca2007-07-17 13:57:04 -0500675 /* Unrecognized command */
Simon Glass4c12eeb2011-12-10 08:44:01 +0000676 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400677 }
678
679 return 0;
680}
681
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400682/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400683
Simon Glassd14da912013-04-20 08:42:42 +0000684/**
685 * fdt_valid() - Check if an FDT is valid. If not, change it to NULL
686 *
687 * @blobp: Pointer to FDT pointer
688 * @return 1 if OK, 0 if bad (in which case *blobp is set to NULL)
689 */
690static int fdt_valid(struct fdt_header **blobp)
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400691{
Simon Glassd14da912013-04-20 08:42:42 +0000692 const void *blob = *blobp;
693 int err;
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400694
Simon Glassd14da912013-04-20 08:42:42 +0000695 if (blob == NULL) {
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400696 printf ("The address of the fdt is invalid (NULL).\n");
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400697 return 0;
698 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400699
Simon Glassd14da912013-04-20 08:42:42 +0000700 err = fdt_check_header(blob);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400701 if (err == 0)
702 return 1; /* valid */
703
704 if (err < 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400705 printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400706 /*
707 * Be more informative on bad version.
708 */
709 if (err == -FDT_ERR_BADVERSION) {
Simon Glassd14da912013-04-20 08:42:42 +0000710 if (fdt_version(blob) <
Kim Phillipse489b9c2008-06-10 11:06:17 -0500711 FDT_FIRST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700712 printf (" - too old, fdt %d < %d",
Simon Glassd14da912013-04-20 08:42:42 +0000713 fdt_version(blob),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400714 FDT_FIRST_SUPPORTED_VERSION);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400715 }
Simon Glassd14da912013-04-20 08:42:42 +0000716 if (fdt_last_comp_version(blob) >
Kim Phillipse489b9c2008-06-10 11:06:17 -0500717 FDT_LAST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700718 printf (" - too new, fdt %d > %d",
Simon Glassd14da912013-04-20 08:42:42 +0000719 fdt_version(blob),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400720 FDT_LAST_SUPPORTED_VERSION);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400721 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400722 }
723 printf("\n");
Simon Glassd14da912013-04-20 08:42:42 +0000724 *blobp = NULL;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400725 return 0;
726 }
727 return 1;
728}
729
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400730/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400731
732/*
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400733 * Parse the user's input, partially heuristic. Valid formats:
Andy Fleming4abd8442008-03-31 20:45:56 -0500734 * <0x00112233 4 05> - an array of cells. Numbers follow standard
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200735 * C conventions.
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400736 * [00 11 22 .. nn] - byte stream
737 * "string" - If the the value doesn't start with "<" or "[", it is
738 * treated as a string. Note that the quotes are
739 * stripped by the parser before we get the string.
Andy Fleming4abd8442008-03-31 20:45:56 -0500740 * newval: An array of strings containing the new property as specified
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200741 * on the command line
Andy Fleming4abd8442008-03-31 20:45:56 -0500742 * count: The number of strings in the array
743 * data: A bytestream to be placed in the property
744 * len: The length of the resulting bytestream
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400745 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200746static int fdt_parse_prop(char * const *newval, int count, char *data, int *len)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400747{
748 char *cp; /* temporary char pointer */
Andy Fleming4abd8442008-03-31 20:45:56 -0500749 char *newp; /* temporary newval char pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400750 unsigned long tmp; /* holds converted values */
Andy Fleming4abd8442008-03-31 20:45:56 -0500751 int stridx = 0;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400752
Andy Fleming4abd8442008-03-31 20:45:56 -0500753 *len = 0;
754 newp = newval[0];
755
756 /* An array of cells */
757 if (*newp == '<') {
758 newp++;
759 while ((*newp != '>') && (stridx < count)) {
760 /*
761 * Keep searching until we find that last ">"
762 * That way users don't have to escape the spaces
763 */
764 if (*newp == '\0') {
765 newp = newval[++stridx];
766 continue;
767 }
768
769 cp = newp;
770 tmp = simple_strtoul(cp, &newp, 0);
Andreas Färberb05bf6c2017-01-09 16:08:02 +0100771 *(fdt32_t *)data = cpu_to_fdt32(tmp);
Andy Fleming4abd8442008-03-31 20:45:56 -0500772 data += 4;
773 *len += 4;
774
775 /* If the ptr didn't advance, something went wrong */
776 if ((newp - cp) <= 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400777 printf("Sorry, I could not convert \"%s\"\n",
778 cp);
779 return 1;
780 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500781
782 while (*newp == ' ')
783 newp++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400784 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500785
786 if (*newp != '>') {
787 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400788 return 1;
789 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500790 } else if (*newp == '[') {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400791 /*
792 * Byte stream. Convert the values.
793 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500794 newp++;
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500795 while ((stridx < count) && (*newp != ']')) {
796 while (*newp == ' ')
797 newp++;
798 if (*newp == '\0') {
799 newp = newval[++stridx];
800 continue;
801 }
802 if (!isxdigit(*newp))
803 break;
Andy Fleming4abd8442008-03-31 20:45:56 -0500804 tmp = simple_strtoul(newp, &newp, 16);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400805 *data++ = tmp & 0xFF;
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400806 *len = *len + 1;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400807 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500808 if (*newp != ']') {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700809 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400810 return 1;
811 }
812 } else {
813 /*
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500814 * Assume it is one or more strings. Copy it into our
815 * data area for convenience (including the
816 * terminating '\0's).
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400817 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500818 while (stridx < count) {
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500819 size_t length = strlen(newp) + 1;
Andy Fleming4abd8442008-03-31 20:45:56 -0500820 strcpy(data, newp);
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500821 data += length;
822 *len += length;
Andy Fleming4abd8442008-03-31 20:45:56 -0500823 newp = newval[++stridx];
824 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400825 }
826 return 0;
827}
828
829/****************************************************************************/
830
831/*
832 * Heuristic to guess if this is a string or concatenated strings.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400833 */
834
835static int is_printable_string(const void *data, int len)
836{
837 const char *s = data;
838
839 /* zero length is not */
840 if (len == 0)
841 return 0;
842
Joe Hershberger8805bee2012-08-17 10:34:38 +0000843 /* must terminate with zero or '\n' */
844 if (s[len - 1] != '\0' && s[len - 1] != '\n')
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400845 return 0;
846
847 /* printable or a null byte (concatenated strings) */
Joe Hershberger8805bee2012-08-17 10:34:38 +0000848 while (((*s == '\0') || isprint(*s) || isspace(*s)) && (len > 0)) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400849 /*
850 * If we see a null, there are three possibilities:
851 * 1) If len == 1, it is the end of the string, printable
852 * 2) Next character also a null, not printable.
853 * 3) Next character not a null, continue to check.
854 */
855 if (s[0] == '\0') {
856 if (len == 1)
857 return 1;
858 if (s[1] == '\0')
859 return 0;
860 }
861 s++;
862 len--;
863 }
864
865 /* Not the null termination, or not done yet: not printable */
866 if (*s != '\0' || (len != 0))
867 return 0;
868
869 return 1;
870}
871
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400872
873/*
874 * Print the property in the best format, a heuristic guess. Print as
875 * a string, concatenated strings, a byte, word, double word, or (if all
876 * else fails) it is printed as a stream of bytes.
877 */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400878static void print_data(const void *data, int len)
879{
880 int j;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400881
882 /* no data, don't print */
883 if (len == 0)
884 return;
885
886 /*
887 * It is a string, but it may have multiple strings (embedded '\0's).
888 */
889 if (is_printable_string(data, len)) {
890 puts("\"");
891 j = 0;
892 while (j < len) {
893 if (j > 0)
894 puts("\", \"");
895 puts(data);
896 j += strlen(data) + 1;
897 data += strlen(data) + 1;
898 }
899 puts("\"");
900 return;
901 }
902
Andy Fleming4abd8442008-03-31 20:45:56 -0500903 if ((len %4) == 0) {
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000904 if (len > CONFIG_CMD_FDT_MAX_DUMP)
Tom Rini085b9c32012-10-29 14:53:18 +0000905 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000906 else {
Kim Phillips088f1b12012-10-29 13:34:31 +0000907 const __be32 *p;
Andy Fleming4abd8442008-03-31 20:45:56 -0500908
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000909 printf("<");
910 for (j = 0, p = data; j < len/4; j++)
911 printf("0x%08x%s", fdt32_to_cpu(p[j]),
912 j < (len/4 - 1) ? " " : "");
913 printf(">");
914 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500915 } else { /* anything else... hexdump */
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000916 if (len > CONFIG_CMD_FDT_MAX_DUMP)
Tom Rini085b9c32012-10-29 14:53:18 +0000917 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000918 else {
919 const u8 *s;
Andy Fleming4abd8442008-03-31 20:45:56 -0500920
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000921 printf("[");
922 for (j = 0, s = data; j < len; j++)
923 printf("%02x%s", s[j], j < len - 1 ? " " : "");
924 printf("]");
925 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400926 }
927}
928
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400929/****************************************************************************/
930
931/*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500932 * Recursively print (a portion of) the working_fdt. The depth parameter
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400933 * determines how deeply nested the fdt is printed.
934 */
Kumar Galadbaf07c2007-11-21 14:07:46 -0600935static int fdt_print(const char *pathp, char *prop, int depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400936{
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400937 static char tabs[MAX_LEVEL+1] =
938 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
939 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
Kumar Galadbaf07c2007-11-21 14:07:46 -0600940 const void *nodep; /* property node pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400941 int nodeoffset; /* node offset from libfdt */
942 int nextoffset; /* next node offset from libfdt */
943 uint32_t tag; /* tag */
944 int len; /* length of the property */
945 int level = 0; /* keep track of nesting level */
Gerald Van Baren91623522007-11-22 17:23:23 -0500946 const struct fdt_property *fdt_prop;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400947
Kim Phillipse489b9c2008-06-10 11:06:17 -0500948 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400949 if (nodeoffset < 0) {
950 /*
951 * Not found or something else bad happened.
952 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500953 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400954 fdt_strerror(nodeoffset));
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400955 return 1;
956 }
957 /*
958 * The user passed in a property as well as node path.
959 * Print only the given property and then return.
960 */
961 if (prop) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500962 nodep = fdt_getprop (working_fdt, nodeoffset, prop, &len);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400963 if (len == 0) {
964 /* no property value */
965 printf("%s %s\n", pathp, prop);
966 return 0;
967 } else if (len > 0) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -0500968 printf("%s = ", prop);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400969 print_data (nodep, len);
970 printf("\n");
971 return 0;
972 } else {
973 printf ("libfdt fdt_getprop(): %s\n",
974 fdt_strerror(len));
975 return 1;
976 }
977 }
978
979 /*
980 * The user passed in a node path and no property,
981 * print the node and all subnodes.
982 */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400983 while(level >= 0) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500984 tag = fdt_next_tag(working_fdt, nodeoffset, &nextoffset);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400985 switch(tag) {
986 case FDT_BEGIN_NODE:
Kim Phillipse489b9c2008-06-10 11:06:17 -0500987 pathp = fdt_get_name(working_fdt, nodeoffset, NULL);
Gerald Van Baren91623522007-11-22 17:23:23 -0500988 if (level <= depth) {
989 if (pathp == NULL)
990 pathp = "/* NULL pointer error */";
991 if (*pathp == '\0')
992 pathp = "/"; /* root is nameless */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400993 printf("%s%s {\n",
994 &tabs[MAX_LEVEL - level], pathp);
Gerald Van Baren91623522007-11-22 17:23:23 -0500995 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400996 level++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400997 if (level >= MAX_LEVEL) {
Gerald Van Baren91623522007-11-22 17:23:23 -0500998 printf("Nested too deep, aborting.\n");
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400999 return 1;
1000 }
1001 break;
1002 case FDT_END_NODE:
1003 level--;
Gerald Van Baren91623522007-11-22 17:23:23 -05001004 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001005 printf("%s};\n", &tabs[MAX_LEVEL - level]);
1006 if (level == 0) {
1007 level = -1; /* exit the loop */
1008 }
1009 break;
1010 case FDT_PROP:
Kim Phillipse489b9c2008-06-10 11:06:17 -05001011 fdt_prop = fdt_offset_ptr(working_fdt, nodeoffset,
Gerald Van Baren91623522007-11-22 17:23:23 -05001012 sizeof(*fdt_prop));
Kim Phillipse489b9c2008-06-10 11:06:17 -05001013 pathp = fdt_string(working_fdt,
Gerald Van Baren91623522007-11-22 17:23:23 -05001014 fdt32_to_cpu(fdt_prop->nameoff));
1015 len = fdt32_to_cpu(fdt_prop->len);
1016 nodep = fdt_prop->data;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001017 if (len < 0) {
1018 printf ("libfdt fdt_getprop(): %s\n",
1019 fdt_strerror(len));
1020 return 1;
1021 } else if (len == 0) {
1022 /* the property has no value */
Gerald Van Baren91623522007-11-22 17:23:23 -05001023 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001024 printf("%s%s;\n",
1025 &tabs[MAX_LEVEL - level],
1026 pathp);
1027 } else {
Gerald Van Baren91623522007-11-22 17:23:23 -05001028 if (level <= depth) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -05001029 printf("%s%s = ",
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001030 &tabs[MAX_LEVEL - level],
1031 pathp);
1032 print_data (nodep, len);
1033 printf(";\n");
1034 }
1035 }
1036 break;
1037 case FDT_NOP:
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -07001038 printf("%s/* NOP */\n", &tabs[MAX_LEVEL - level]);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001039 break;
1040 case FDT_END:
1041 return 1;
1042 default:
Gerald Van Baren91623522007-11-22 17:23:23 -05001043 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001044 printf("Unknown tag 0x%08X\n", tag);
1045 return 1;
1046 }
1047 nodeoffset = nextoffset;
1048 }
1049 return 0;
1050}
1051
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001052/********************************************************************/
Kim Phillips088f1b12012-10-29 13:34:31 +00001053#ifdef CONFIG_SYS_LONGHELP
1054static char fdt_help_text[] =
Simon Glass4b578652013-04-20 08:42:44 +00001055 "addr [-c] <addr> [<length>] - Set the [control] fdt location to <addr>\n"
Maxime Riparde6628ad2016-07-05 10:26:45 +02001056#ifdef CONFIG_OF_LIBFDT_OVERLAY
1057 "fdt apply <addr> - Apply overlay to the DT\n"
1058#endif
Gerald Van Barenfd61e552007-06-25 23:25:28 -04001059#ifdef CONFIG_OF_BOARD_SETUP
1060 "fdt boardsetup - Do board-specific set up\n"
1061#endif
Simon Glassc654b512014-10-23 18:58:54 -06001062#ifdef CONFIG_OF_SYSTEM_SETUP
1063 "fdt systemsetup - Do system-specific set up\n"
1064#endif
Gerald Van Baren238cb7a2008-01-05 15:33:29 -05001065 "fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n"
Hannes Schmelzeref476832016-09-20 18:10:43 +02001066 "fdt resize [<extrasize>] - Resize fdt to size + padding to 4k addr + some optional <extrasize> if needed\n"
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001067 "fdt print <path> [<prop>] - Recursive print starting at <path>\n"
1068 "fdt list <path> [<prop>] - Print one level starting at <path>\n"
Joe Hershbergerbc802952012-08-17 10:34:37 +00001069 "fdt get value <var> <path> <prop> - Get <property> and store in <var>\n"
1070 "fdt get name <var> <path> <index> - Get name of node <index> and store in <var>\n"
1071 "fdt get addr <var> <path> <prop> - Get start address of <property> and store in <var>\n"
1072 "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 -04001073 "fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
1074 "fdt mknode <path> <node> - Create a new node after <path>\n"
1075 "fdt rm <path> [<prop>] - Delete the node or <property>\n"
Kumar Gala804887e2008-02-15 03:34:36 -06001076 "fdt header - Display header info\n"
1077 "fdt bootcpu <id> - Set boot cpuid\n"
1078 "fdt memory <addr> <size> - Add/Update memory node\n"
1079 "fdt rsvmem print - Show current mem reserves\n"
1080 "fdt rsvmem add <addr> <size> - Add a mem reserve\n"
1081 "fdt rsvmem delete <index> - Delete a mem reserves\n"
Kumar Galaf953d992008-08-15 08:24:34 -05001082 "fdt chosen [<start> <end>] - Add/update the /chosen branch in the tree\n"
1083 " <start>/<end> - initrd start/end addr\n"
Heiko Schocher097dd3e2014-03-03 12:19:24 +01001084#if defined(CONFIG_FIT_SIGNATURE)
1085 "fdt checksign [<addr>] - check FIT signature\n"
1086 " <start> - addr of key blob\n"
1087 " default gd->fdt_blob\n"
1088#endif
Robert P. J. Day1cc0a9f2016-05-04 04:47:31 -04001089 "NOTE: Dereference aliases by omitting the leading '/', "
Kim Phillips088f1b12012-10-29 13:34:31 +00001090 "e.g. fdt print ethernet0.";
1091#endif
1092
1093U_BOOT_CMD(
1094 fdt, 255, 0, do_fdt,
1095 "flattened device tree utility commands", fdt_help_text
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001096);