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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>
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
61 sprintf(buf, "0x%08X", *(uint32_t *)nodep);
62 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 */
Gerald Van Baren25114032007-05-12 09:47:25 -040090 if (argv[1][0] == 'a') {
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;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400209
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200210 /*
Gerald Van Baren25114032007-05-12 09:47:25 -0400211 * Make a new node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200212 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400213 } else if (strncmp(argv[1], "mk", 2) == 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400214 char *pathp; /* path */
215 char *nodep; /* new node to add */
216 int nodeoffset; /* node offset from libfdt */
217 int err;
218
219 /*
220 * Parameters: Node path, new node to be appended to the path.
221 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200222 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000223 return CMD_RET_USAGE;
Gerald Van Baren25114032007-05-12 09:47:25 -0400224
225 pathp = argv[2];
226 nodep = argv[3];
227
Kim Phillipse489b9c2008-06-10 11:06:17 -0500228 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400229 if (nodeoffset < 0) {
230 /*
231 * Not found or something else bad happened.
232 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500233 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400234 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400235 return 1;
236 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500237 err = fdt_add_subnode(working_fdt, nodeoffset, nodep);
Gerald Van Baren25114032007-05-12 09:47:25 -0400238 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400239 printf ("libfdt fdt_add_subnode(): %s\n",
240 fdt_strerror(err));
Gerald Van Baren25114032007-05-12 09:47:25 -0400241 return 1;
242 }
243
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200244 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500245 * Set the value of a property in the working_fdt.
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200246 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400247 } else if (argv[1][0] == 's') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400248 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400249 char *prop; /* property */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400250 int nodeoffset; /* node offset from libfdt */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400251 static char data[SCRATCHPAD]; /* storage for the property */
252 int len; /* new length of the property */
253 int ret; /* return value */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400254
255 /*
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500256 * Parameters: Node path, property, optional value.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400257 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200258 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000259 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400260
261 pathp = argv[2];
262 prop = argv[3];
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500263 if (argc == 4) {
264 len = 0;
265 } else {
Andy Fleming4abd8442008-03-31 20:45:56 -0500266 ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500267 if (ret != 0)
268 return ret;
269 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400270
Kim Phillipse489b9c2008-06-10 11:06:17 -0500271 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400272 if (nodeoffset < 0) {
273 /*
274 * Not found or something else bad happened.
275 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500276 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400277 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400278 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400279 }
Gerald Van Baren25114032007-05-12 09:47:25 -0400280
Kim Phillipse489b9c2008-06-10 11:06:17 -0500281 ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
Gerald Van Baren25114032007-05-12 09:47:25 -0400282 if (ret < 0) {
283 printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
284 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400285 }
286
Joe Hershbergerbc802952012-08-17 10:34:37 +0000287 /********************************************************************
288 * Get the value of a property in the working_fdt.
289 ********************************************************************/
290 } else if (argv[1][0] == 'g') {
291 char *subcmd; /* sub-command */
292 char *pathp; /* path */
293 char *prop; /* property */
294 char *var; /* variable to store result */
295 int nodeoffset; /* node offset from libfdt */
296 const void *nodep; /* property node pointer */
297 int len = 0; /* new length of the property */
298
299 /*
300 * Parameters: Node path, property, optional value.
301 */
302 if (argc < 5)
303 return CMD_RET_USAGE;
304
305 subcmd = argv[2];
306
307 if (argc < 6 && subcmd[0] != 's')
308 return CMD_RET_USAGE;
309
310 var = argv[3];
311 pathp = argv[4];
312 prop = argv[5];
313
314 nodeoffset = fdt_path_offset(working_fdt, pathp);
315 if (nodeoffset < 0) {
316 /*
317 * Not found or something else bad happened.
318 */
319 printf("libfdt fdt_path_offset() returned %s\n",
320 fdt_strerror(nodeoffset));
321 return 1;
322 }
323
324 if (subcmd[0] == 'n' || (subcmd[0] == 's' && argc == 5)) {
325 int reqIndex = -1;
326 int startDepth = fdt_node_depth(
327 working_fdt, nodeoffset);
328 int curDepth = startDepth;
329 int curIndex = -1;
330 int nextNodeOffset = fdt_next_node(
331 working_fdt, nodeoffset, &curDepth);
332
333 if (subcmd[0] == 'n')
334 reqIndex = simple_strtoul(argv[5], NULL, 16);
335
336 while (curDepth > startDepth) {
337 if (curDepth == startDepth + 1)
338 curIndex++;
339 if (subcmd[0] == 'n' && curIndex == reqIndex) {
340 const char *nodeName = fdt_get_name(
341 working_fdt, nextNodeOffset, NULL);
342
343 setenv(var, (char *)nodeName);
344 return 0;
345 }
346 nextNodeOffset = fdt_next_node(
347 working_fdt, nextNodeOffset, &curDepth);
348 if (nextNodeOffset < 0)
349 break;
350 }
351 if (subcmd[0] == 's') {
352 /* get the num nodes at this level */
Simon Glassbfc59962013-02-24 17:33:21 +0000353 setenv_ulong(var, curIndex + 1);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000354 } else {
355 /* node index not found */
356 printf("libfdt node not found\n");
357 return 1;
358 }
359 } else {
360 nodep = fdt_getprop(
361 working_fdt, nodeoffset, prop, &len);
362 if (len == 0) {
363 /* no property value */
364 setenv(var, "");
365 return 0;
366 } else if (len > 0) {
367 if (subcmd[0] == 'v') {
368 int ret;
369
370 ret = fdt_value_setenv(nodep, len, var);
371 if (ret != 0)
372 return ret;
373 } else if (subcmd[0] == 'a') {
374 /* Get address */
375 char buf[11];
376
Tom Rini085b9c32012-10-29 14:53:18 +0000377 sprintf(buf, "0x%p", nodep);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000378 setenv(var, buf);
379 } else if (subcmd[0] == 's') {
380 /* Get size */
381 char buf[11];
382
383 sprintf(buf, "0x%08X", len);
384 setenv(var, buf);
385 } else
386 return CMD_RET_USAGE;
387 return 0;
388 } else {
389 printf("libfdt fdt_getprop(): %s\n",
390 fdt_strerror(len));
391 return 1;
392 }
393 }
394
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200395 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400396 * Print (recursive) / List (single level)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200397 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400398 } else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400399 int depth = MAX_LEVEL; /* how deep to print */
400 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400401 char *prop; /* property */
402 int ret; /* return value */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500403 static char root[2] = "/";
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400404
405 /*
406 * list is an alias for print, but limited to 1 level
407 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400408 if (argv[1][0] == 'l') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400409 depth = 1;
410 }
411
412 /*
413 * Get the starting path. The root node is an oddball,
414 * the offset is zero and has no name.
415 */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500416 if (argc == 2)
417 pathp = root;
418 else
419 pathp = argv[2];
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400420 if (argc > 3)
421 prop = argv[3];
422 else
423 prop = NULL;
424
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400425 ret = fdt_print(pathp, prop, depth);
426 if (ret != 0)
427 return ret;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400428
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200429 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400430 * Remove a property/node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200431 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400432 } else if (strncmp(argv[1], "rm", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400433 int nodeoffset; /* node offset from libfdt */
434 int err;
435
436 /*
437 * Get the path. The root node is an oddball, the offset
438 * is zero and has no name.
439 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500440 nodeoffset = fdt_path_offset (working_fdt, argv[2]);
Gerald Van Baren25114032007-05-12 09:47:25 -0400441 if (nodeoffset < 0) {
442 /*
443 * Not found or something else bad happened.
444 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500445 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400446 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400447 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400448 }
449 /*
450 * Do the delete. A fourth parameter means delete a property,
451 * otherwise delete the node.
452 */
453 if (argc > 3) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500454 err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400455 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400456 printf("libfdt fdt_delprop(): %s\n",
457 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400458 return err;
459 }
460 } else {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500461 err = fdt_del_node(working_fdt, nodeoffset);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400462 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400463 printf("libfdt fdt_del_node(): %s\n",
464 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400465 return err;
466 }
467 }
Kumar Gala804887e2008-02-15 03:34:36 -0600468
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200469 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600470 * Display header info
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200471 */
Kumar Gala804887e2008-02-15 03:34:36 -0600472 } else if (argv[1][0] == 'h') {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500473 u32 version = fdt_version(working_fdt);
474 printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
475 printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
476 fdt_totalsize(working_fdt));
477 printf("off_dt_struct:\t\t0x%x\n",
478 fdt_off_dt_struct(working_fdt));
479 printf("off_dt_strings:\t\t0x%x\n",
480 fdt_off_dt_strings(working_fdt));
481 printf("off_mem_rsvmap:\t\t0x%x\n",
482 fdt_off_mem_rsvmap(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600483 printf("version:\t\t%d\n", version);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500484 printf("last_comp_version:\t%d\n",
485 fdt_last_comp_version(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600486 if (version >= 2)
487 printf("boot_cpuid_phys:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500488 fdt_boot_cpuid_phys(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600489 if (version >= 3)
490 printf("size_dt_strings:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500491 fdt_size_dt_strings(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600492 if (version >= 17)
493 printf("size_dt_struct:\t\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500494 fdt_size_dt_struct(working_fdt));
495 printf("number mem_rsv:\t\t0x%x\n",
496 fdt_num_mem_rsv(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600497 printf("\n");
498
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200499 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600500 * Set boot cpu id
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200501 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400502 } else if (strncmp(argv[1], "boo", 3) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600503 unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500504 fdt_set_boot_cpuid_phys(working_fdt, tmp);
Kumar Gala804887e2008-02-15 03:34:36 -0600505
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200506 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600507 * memory command
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200508 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400509 } else if (strncmp(argv[1], "me", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600510 uint64_t addr, size;
511 int err;
Heiko Schocher4b142fe2009-12-03 11:21:21 +0100512 addr = simple_strtoull(argv[2], NULL, 16);
513 size = simple_strtoull(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500514 err = fdt_fixup_memory(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600515 if (err < 0)
516 return err;
517
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200518 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600519 * mem reserve commands
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200520 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400521 } else if (strncmp(argv[1], "rs", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600522 if (argv[2][0] == 'p') {
523 uint64_t addr, size;
Kim Phillipse489b9c2008-06-10 11:06:17 -0500524 int total = fdt_num_mem_rsv(working_fdt);
Kumar Gala804887e2008-02-15 03:34:36 -0600525 int j, err;
526 printf("index\t\t start\t\t size\n");
527 printf("-------------------------------"
528 "-----------------\n");
529 for (j = 0; j < total; j++) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500530 err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
Kumar Gala804887e2008-02-15 03:34:36 -0600531 if (err < 0) {
532 printf("libfdt fdt_get_mem_rsv(): %s\n",
533 fdt_strerror(err));
534 return err;
535 }
536 printf(" %x\t%08x%08x\t%08x%08x\n", j,
537 (u32)(addr >> 32),
538 (u32)(addr & 0xffffffff),
539 (u32)(size >> 32),
540 (u32)(size & 0xffffffff));
541 }
542 } else if (argv[2][0] == 'a') {
543 uint64_t addr, size;
544 int err;
Kumar Gala804887e2008-02-15 03:34:36 -0600545 addr = simple_strtoull(argv[3], NULL, 16);
546 size = simple_strtoull(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500547 err = fdt_add_mem_rsv(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600548
549 if (err < 0) {
550 printf("libfdt fdt_add_mem_rsv(): %s\n",
551 fdt_strerror(err));
552 return err;
553 }
554 } else if (argv[2][0] == 'd') {
555 unsigned long idx = simple_strtoul(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500556 int err = fdt_del_mem_rsv(working_fdt, idx);
Kumar Gala804887e2008-02-15 03:34:36 -0600557
558 if (err < 0) {
559 printf("libfdt fdt_del_mem_rsv(): %s\n",
560 fdt_strerror(err));
561 return err;
562 }
563 } else {
564 /* Unrecognized command */
Simon Glass4c12eeb2011-12-10 08:44:01 +0000565 return CMD_RET_USAGE;
Kumar Gala804887e2008-02-15 03:34:36 -0600566 }
Kim Phillips99dffca2007-07-17 13:57:04 -0500567 }
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400568#ifdef CONFIG_OF_BOARD_SETUP
Kim Phillips99dffca2007-07-17 13:57:04 -0500569 /* Call the board-specific fixup routine */
Simon Glass4ba98dc2014-10-23 18:58:48 -0600570 else if (strncmp(argv[1], "boa", 3) == 0) {
571 int err = ft_board_setup(working_fdt, gd->bd);
572
573 if (err) {
574 printf("Failed to update board information in FDT: %s\n",
575 fdt_strerror(err));
576 return CMD_RET_FAILURE;
577 }
578 }
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400579#endif
Simon Glassc654b512014-10-23 18:58:54 -0600580#ifdef CONFIG_OF_SYSTEM_SETUP
581 /* Call the board-specific fixup routine */
582 else if (strncmp(argv[1], "sys", 3) == 0) {
583 int err = ft_system_setup(working_fdt, gd->bd);
584
585 if (err) {
586 printf("Failed to add system information to FDT: %s\n",
587 fdt_strerror(err));
588 return CMD_RET_FAILURE;
589 }
590 }
591#endif
Kim Phillips99dffca2007-07-17 13:57:04 -0500592 /* Create a chosen node */
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100593 else if (strncmp(argv[1], "cho", 3) == 0) {
Kumar Galaf953d992008-08-15 08:24:34 -0500594 unsigned long initrd_start = 0, initrd_end = 0;
595
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200596 if ((argc != 2) && (argc != 4))
Simon Glass4c12eeb2011-12-10 08:44:01 +0000597 return CMD_RET_USAGE;
Kumar Galaf953d992008-08-15 08:24:34 -0500598
599 if (argc == 4) {
600 initrd_start = simple_strtoul(argv[2], NULL, 16);
601 initrd_end = simple_strtoul(argv[3], NULL, 16);
602 }
603
Masahiro Yamadabc6ed0f2014-04-18 17:41:00 +0900604 fdt_chosen(working_fdt);
Masahiro Yamadadbe963a2014-04-18 17:40:59 +0900605 fdt_initrd(working_fdt, initrd_start, initrd_end);
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100606
607#if defined(CONFIG_FIT_SIGNATURE)
608 } else if (strncmp(argv[1], "che", 3) == 0) {
609 int cfg_noffset;
610 int ret;
611 unsigned long addr;
612 struct fdt_header *blob;
613
614 if (!working_fdt)
615 return CMD_RET_FAILURE;
616
617 if (argc > 2) {
618 addr = simple_strtoul(argv[2], NULL, 16);
619 blob = map_sysmem(addr, 0);
620 } else {
621 blob = (struct fdt_header *)gd->fdt_blob;
622 }
623 if (!fdt_valid(&blob))
624 return 1;
625
626 gd->fdt_blob = blob;
627 cfg_noffset = fit_conf_get_node(working_fdt, NULL);
628 if (!cfg_noffset) {
629 printf("Could not find configuration node: %s\n",
630 fdt_strerror(cfg_noffset));
631 return CMD_RET_FAILURE;
632 }
633
634 ret = fit_config_verify(working_fdt, cfg_noffset);
Simon Glass12df2ab2014-06-12 07:24:45 -0600635 if (ret == 0)
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100636 return CMD_RET_SUCCESS;
637 else
638 return CMD_RET_FAILURE;
639#endif
640
Kumar Gala40afac22008-08-15 08:24:44 -0500641 }
642 /* resize the fdt */
643 else if (strncmp(argv[1], "re", 2) == 0) {
Simon Glass5bf58cc2014-07-30 03:59:02 -0600644 fdt_shrink_to_minimum(working_fdt);
Kumar Gala40afac22008-08-15 08:24:44 -0500645 }
646 else {
Kim Phillips99dffca2007-07-17 13:57:04 -0500647 /* Unrecognized command */
Simon Glass4c12eeb2011-12-10 08:44:01 +0000648 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400649 }
650
651 return 0;
652}
653
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400654/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400655
Simon Glassd14da912013-04-20 08:42:42 +0000656/**
657 * fdt_valid() - Check if an FDT is valid. If not, change it to NULL
658 *
659 * @blobp: Pointer to FDT pointer
660 * @return 1 if OK, 0 if bad (in which case *blobp is set to NULL)
661 */
662static int fdt_valid(struct fdt_header **blobp)
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400663{
Simon Glassd14da912013-04-20 08:42:42 +0000664 const void *blob = *blobp;
665 int err;
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400666
Simon Glassd14da912013-04-20 08:42:42 +0000667 if (blob == NULL) {
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400668 printf ("The address of the fdt is invalid (NULL).\n");
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400669 return 0;
670 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400671
Simon Glassd14da912013-04-20 08:42:42 +0000672 err = fdt_check_header(blob);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400673 if (err == 0)
674 return 1; /* valid */
675
676 if (err < 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400677 printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400678 /*
679 * Be more informative on bad version.
680 */
681 if (err == -FDT_ERR_BADVERSION) {
Simon Glassd14da912013-04-20 08:42:42 +0000682 if (fdt_version(blob) <
Kim Phillipse489b9c2008-06-10 11:06:17 -0500683 FDT_FIRST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700684 printf (" - too old, fdt %d < %d",
Simon Glassd14da912013-04-20 08:42:42 +0000685 fdt_version(blob),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400686 FDT_FIRST_SUPPORTED_VERSION);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400687 }
Simon Glassd14da912013-04-20 08:42:42 +0000688 if (fdt_last_comp_version(blob) >
Kim Phillipse489b9c2008-06-10 11:06:17 -0500689 FDT_LAST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700690 printf (" - too new, fdt %d > %d",
Simon Glassd14da912013-04-20 08:42:42 +0000691 fdt_version(blob),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400692 FDT_LAST_SUPPORTED_VERSION);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400693 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400694 }
695 printf("\n");
Simon Glassd14da912013-04-20 08:42:42 +0000696 *blobp = NULL;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400697 return 0;
698 }
699 return 1;
700}
701
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400702/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400703
704/*
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400705 * Parse the user's input, partially heuristic. Valid formats:
Andy Fleming4abd8442008-03-31 20:45:56 -0500706 * <0x00112233 4 05> - an array of cells. Numbers follow standard
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200707 * C conventions.
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400708 * [00 11 22 .. nn] - byte stream
709 * "string" - If the the value doesn't start with "<" or "[", it is
710 * treated as a string. Note that the quotes are
711 * stripped by the parser before we get the string.
Andy Fleming4abd8442008-03-31 20:45:56 -0500712 * newval: An array of strings containing the new property as specified
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200713 * on the command line
Andy Fleming4abd8442008-03-31 20:45:56 -0500714 * count: The number of strings in the array
715 * data: A bytestream to be placed in the property
716 * len: The length of the resulting bytestream
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400717 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200718static int fdt_parse_prop(char * const *newval, int count, char *data, int *len)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400719{
720 char *cp; /* temporary char pointer */
Andy Fleming4abd8442008-03-31 20:45:56 -0500721 char *newp; /* temporary newval char pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400722 unsigned long tmp; /* holds converted values */
Andy Fleming4abd8442008-03-31 20:45:56 -0500723 int stridx = 0;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400724
Andy Fleming4abd8442008-03-31 20:45:56 -0500725 *len = 0;
726 newp = newval[0];
727
728 /* An array of cells */
729 if (*newp == '<') {
730 newp++;
731 while ((*newp != '>') && (stridx < count)) {
732 /*
733 * Keep searching until we find that last ">"
734 * That way users don't have to escape the spaces
735 */
736 if (*newp == '\0') {
737 newp = newval[++stridx];
738 continue;
739 }
740
741 cp = newp;
742 tmp = simple_strtoul(cp, &newp, 0);
Kim Phillips088f1b12012-10-29 13:34:31 +0000743 *(__be32 *)data = __cpu_to_be32(tmp);
Andy Fleming4abd8442008-03-31 20:45:56 -0500744 data += 4;
745 *len += 4;
746
747 /* If the ptr didn't advance, something went wrong */
748 if ((newp - cp) <= 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400749 printf("Sorry, I could not convert \"%s\"\n",
750 cp);
751 return 1;
752 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500753
754 while (*newp == ' ')
755 newp++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400756 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500757
758 if (*newp != '>') {
759 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400760 return 1;
761 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500762 } else if (*newp == '[') {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400763 /*
764 * Byte stream. Convert the values.
765 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500766 newp++;
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500767 while ((stridx < count) && (*newp != ']')) {
768 while (*newp == ' ')
769 newp++;
770 if (*newp == '\0') {
771 newp = newval[++stridx];
772 continue;
773 }
774 if (!isxdigit(*newp))
775 break;
Andy Fleming4abd8442008-03-31 20:45:56 -0500776 tmp = simple_strtoul(newp, &newp, 16);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400777 *data++ = tmp & 0xFF;
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400778 *len = *len + 1;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400779 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500780 if (*newp != ']') {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700781 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400782 return 1;
783 }
784 } else {
785 /*
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500786 * Assume it is one or more strings. Copy it into our
787 * data area for convenience (including the
788 * terminating '\0's).
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400789 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500790 while (stridx < count) {
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500791 size_t length = strlen(newp) + 1;
Andy Fleming4abd8442008-03-31 20:45:56 -0500792 strcpy(data, newp);
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500793 data += length;
794 *len += length;
Andy Fleming4abd8442008-03-31 20:45:56 -0500795 newp = newval[++stridx];
796 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400797 }
798 return 0;
799}
800
801/****************************************************************************/
802
803/*
804 * Heuristic to guess if this is a string or concatenated strings.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400805 */
806
807static int is_printable_string(const void *data, int len)
808{
809 const char *s = data;
810
811 /* zero length is not */
812 if (len == 0)
813 return 0;
814
Joe Hershberger8805bee2012-08-17 10:34:38 +0000815 /* must terminate with zero or '\n' */
816 if (s[len - 1] != '\0' && s[len - 1] != '\n')
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400817 return 0;
818
819 /* printable or a null byte (concatenated strings) */
Joe Hershberger8805bee2012-08-17 10:34:38 +0000820 while (((*s == '\0') || isprint(*s) || isspace(*s)) && (len > 0)) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400821 /*
822 * If we see a null, there are three possibilities:
823 * 1) If len == 1, it is the end of the string, printable
824 * 2) Next character also a null, not printable.
825 * 3) Next character not a null, continue to check.
826 */
827 if (s[0] == '\0') {
828 if (len == 1)
829 return 1;
830 if (s[1] == '\0')
831 return 0;
832 }
833 s++;
834 len--;
835 }
836
837 /* Not the null termination, or not done yet: not printable */
838 if (*s != '\0' || (len != 0))
839 return 0;
840
841 return 1;
842}
843
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400844
845/*
846 * Print the property in the best format, a heuristic guess. Print as
847 * a string, concatenated strings, a byte, word, double word, or (if all
848 * else fails) it is printed as a stream of bytes.
849 */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400850static void print_data(const void *data, int len)
851{
852 int j;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400853
854 /* no data, don't print */
855 if (len == 0)
856 return;
857
858 /*
859 * It is a string, but it may have multiple strings (embedded '\0's).
860 */
861 if (is_printable_string(data, len)) {
862 puts("\"");
863 j = 0;
864 while (j < len) {
865 if (j > 0)
866 puts("\", \"");
867 puts(data);
868 j += strlen(data) + 1;
869 data += strlen(data) + 1;
870 }
871 puts("\"");
872 return;
873 }
874
Andy Fleming4abd8442008-03-31 20:45:56 -0500875 if ((len %4) == 0) {
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000876 if (len > CONFIG_CMD_FDT_MAX_DUMP)
Tom Rini085b9c32012-10-29 14:53:18 +0000877 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000878 else {
Kim Phillips088f1b12012-10-29 13:34:31 +0000879 const __be32 *p;
Andy Fleming4abd8442008-03-31 20:45:56 -0500880
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000881 printf("<");
882 for (j = 0, p = data; j < len/4; j++)
883 printf("0x%08x%s", fdt32_to_cpu(p[j]),
884 j < (len/4 - 1) ? " " : "");
885 printf(">");
886 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500887 } else { /* anything else... hexdump */
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000888 if (len > CONFIG_CMD_FDT_MAX_DUMP)
Tom Rini085b9c32012-10-29 14:53:18 +0000889 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000890 else {
891 const u8 *s;
Andy Fleming4abd8442008-03-31 20:45:56 -0500892
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000893 printf("[");
894 for (j = 0, s = data; j < len; j++)
895 printf("%02x%s", s[j], j < len - 1 ? " " : "");
896 printf("]");
897 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400898 }
899}
900
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400901/****************************************************************************/
902
903/*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500904 * Recursively print (a portion of) the working_fdt. The depth parameter
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400905 * determines how deeply nested the fdt is printed.
906 */
Kumar Galadbaf07c2007-11-21 14:07:46 -0600907static int fdt_print(const char *pathp, char *prop, int depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400908{
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400909 static char tabs[MAX_LEVEL+1] =
910 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
911 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
Kumar Galadbaf07c2007-11-21 14:07:46 -0600912 const void *nodep; /* property node pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400913 int nodeoffset; /* node offset from libfdt */
914 int nextoffset; /* next node offset from libfdt */
915 uint32_t tag; /* tag */
916 int len; /* length of the property */
917 int level = 0; /* keep track of nesting level */
Gerald Van Baren91623522007-11-22 17:23:23 -0500918 const struct fdt_property *fdt_prop;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400919
Kim Phillipse489b9c2008-06-10 11:06:17 -0500920 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400921 if (nodeoffset < 0) {
922 /*
923 * Not found or something else bad happened.
924 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500925 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400926 fdt_strerror(nodeoffset));
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400927 return 1;
928 }
929 /*
930 * The user passed in a property as well as node path.
931 * Print only the given property and then return.
932 */
933 if (prop) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500934 nodep = fdt_getprop (working_fdt, nodeoffset, prop, &len);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400935 if (len == 0) {
936 /* no property value */
937 printf("%s %s\n", pathp, prop);
938 return 0;
939 } else if (len > 0) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -0500940 printf("%s = ", prop);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400941 print_data (nodep, len);
942 printf("\n");
943 return 0;
944 } else {
945 printf ("libfdt fdt_getprop(): %s\n",
946 fdt_strerror(len));
947 return 1;
948 }
949 }
950
951 /*
952 * The user passed in a node path and no property,
953 * print the node and all subnodes.
954 */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400955 while(level >= 0) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500956 tag = fdt_next_tag(working_fdt, nodeoffset, &nextoffset);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400957 switch(tag) {
958 case FDT_BEGIN_NODE:
Kim Phillipse489b9c2008-06-10 11:06:17 -0500959 pathp = fdt_get_name(working_fdt, nodeoffset, NULL);
Gerald Van Baren91623522007-11-22 17:23:23 -0500960 if (level <= depth) {
961 if (pathp == NULL)
962 pathp = "/* NULL pointer error */";
963 if (*pathp == '\0')
964 pathp = "/"; /* root is nameless */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400965 printf("%s%s {\n",
966 &tabs[MAX_LEVEL - level], pathp);
Gerald Van Baren91623522007-11-22 17:23:23 -0500967 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400968 level++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400969 if (level >= MAX_LEVEL) {
Gerald Van Baren91623522007-11-22 17:23:23 -0500970 printf("Nested too deep, aborting.\n");
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400971 return 1;
972 }
973 break;
974 case FDT_END_NODE:
975 level--;
Gerald Van Baren91623522007-11-22 17:23:23 -0500976 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400977 printf("%s};\n", &tabs[MAX_LEVEL - level]);
978 if (level == 0) {
979 level = -1; /* exit the loop */
980 }
981 break;
982 case FDT_PROP:
Kim Phillipse489b9c2008-06-10 11:06:17 -0500983 fdt_prop = fdt_offset_ptr(working_fdt, nodeoffset,
Gerald Van Baren91623522007-11-22 17:23:23 -0500984 sizeof(*fdt_prop));
Kim Phillipse489b9c2008-06-10 11:06:17 -0500985 pathp = fdt_string(working_fdt,
Gerald Van Baren91623522007-11-22 17:23:23 -0500986 fdt32_to_cpu(fdt_prop->nameoff));
987 len = fdt32_to_cpu(fdt_prop->len);
988 nodep = fdt_prop->data;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400989 if (len < 0) {
990 printf ("libfdt fdt_getprop(): %s\n",
991 fdt_strerror(len));
992 return 1;
993 } else if (len == 0) {
994 /* the property has no value */
Gerald Van Baren91623522007-11-22 17:23:23 -0500995 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400996 printf("%s%s;\n",
997 &tabs[MAX_LEVEL - level],
998 pathp);
999 } else {
Gerald Van Baren91623522007-11-22 17:23:23 -05001000 if (level <= depth) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -05001001 printf("%s%s = ",
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001002 &tabs[MAX_LEVEL - level],
1003 pathp);
1004 print_data (nodep, len);
1005 printf(";\n");
1006 }
1007 }
1008 break;
1009 case FDT_NOP:
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -07001010 printf("%s/* NOP */\n", &tabs[MAX_LEVEL - level]);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001011 break;
1012 case FDT_END:
1013 return 1;
1014 default:
Gerald Van Baren91623522007-11-22 17:23:23 -05001015 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001016 printf("Unknown tag 0x%08X\n", tag);
1017 return 1;
1018 }
1019 nodeoffset = nextoffset;
1020 }
1021 return 0;
1022}
1023
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001024/********************************************************************/
Kim Phillips088f1b12012-10-29 13:34:31 +00001025#ifdef CONFIG_SYS_LONGHELP
1026static char fdt_help_text[] =
Simon Glass4b578652013-04-20 08:42:44 +00001027 "addr [-c] <addr> [<length>] - Set the [control] fdt location to <addr>\n"
Gerald Van Barenfd61e552007-06-25 23:25:28 -04001028#ifdef CONFIG_OF_BOARD_SETUP
1029 "fdt boardsetup - Do board-specific set up\n"
1030#endif
Simon Glassc654b512014-10-23 18:58:54 -06001031#ifdef CONFIG_OF_SYSTEM_SETUP
1032 "fdt systemsetup - Do system-specific set up\n"
1033#endif
Gerald Van Baren238cb7a2008-01-05 15:33:29 -05001034 "fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n"
Kumar Gala40afac22008-08-15 08:24:44 -05001035 "fdt resize - Resize fdt to size + padding to 4k addr\n"
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001036 "fdt print <path> [<prop>] - Recursive print starting at <path>\n"
1037 "fdt list <path> [<prop>] - Print one level starting at <path>\n"
Joe Hershbergerbc802952012-08-17 10:34:37 +00001038 "fdt get value <var> <path> <prop> - Get <property> and store in <var>\n"
1039 "fdt get name <var> <path> <index> - Get name of node <index> and store in <var>\n"
1040 "fdt get addr <var> <path> <prop> - Get start address of <property> and store in <var>\n"
1041 "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 -04001042 "fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
1043 "fdt mknode <path> <node> - Create a new node after <path>\n"
1044 "fdt rm <path> [<prop>] - Delete the node or <property>\n"
Kumar Gala804887e2008-02-15 03:34:36 -06001045 "fdt header - Display header info\n"
1046 "fdt bootcpu <id> - Set boot cpuid\n"
1047 "fdt memory <addr> <size> - Add/Update memory node\n"
1048 "fdt rsvmem print - Show current mem reserves\n"
1049 "fdt rsvmem add <addr> <size> - Add a mem reserve\n"
1050 "fdt rsvmem delete <index> - Delete a mem reserves\n"
Kumar Galaf953d992008-08-15 08:24:34 -05001051 "fdt chosen [<start> <end>] - Add/update the /chosen branch in the tree\n"
1052 " <start>/<end> - initrd start/end addr\n"
Heiko Schocher097dd3e2014-03-03 12:19:24 +01001053#if defined(CONFIG_FIT_SIGNATURE)
1054 "fdt checksign [<addr>] - check FIT signature\n"
1055 " <start> - addr of key blob\n"
1056 " default gd->fdt_blob\n"
1057#endif
Robert P. J. Day1cc0a9f2016-05-04 04:47:31 -04001058 "NOTE: Dereference aliases by omitting the leading '/', "
Kim Phillips088f1b12012-10-29 13:34:31 +00001059 "e.g. fdt print ethernet0.";
1060#endif
1061
1062U_BOOT_CMD(
1063 fdt, 255, 0, do_fdt,
1064 "flattened device tree utility commands", fdt_help_text
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001065);