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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 */
Simon Glass5d927b42017-05-17 03:25:19 -060023#define CMD_FDT_MAX_DUMP 64
Gerald Van Baren781e09e2007-03-31 12:22:10 -040024
25/*
26 * Global data (for the gd->bd)
27 */
28DECLARE_GLOBAL_DATA_PTR;
29
Simon Glassd14da912013-04-20 08:42:42 +000030static int fdt_valid(struct fdt_header **blobp);
Wolfgang Denk54841ab2010-06-28 22:00:46 +020031static int fdt_parse_prop(char *const*newval, int count, char *data, int *len);
Kumar Galadbaf07c2007-11-21 14:07:46 -060032static int fdt_print(const char *pathp, char *prop, int depth);
Joe Hershbergerbc802952012-08-17 10:34:37 +000033static int is_printable_string(const void *data, int len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -040034
Gerald Van Baren781e09e2007-03-31 12:22:10 -040035/*
Gerald Van Barenae9e97f2008-06-10 22:15:58 -040036 * The working_fdt points to our working flattened device tree.
37 */
38struct fdt_header *working_fdt;
39
Joe Hershberger90fbee32015-02-04 21:56:53 -060040void set_working_fdt_addr(ulong addr)
Kumar Gala54f9c862008-08-15 08:24:39 -050041{
Simon Glassa92fd652013-04-20 08:42:45 +000042 void *buf;
43
Joe Hershberger90fbee32015-02-04 21:56:53 -060044 buf = map_sysmem(addr, 0);
Simon Glassa92fd652013-04-20 08:42:45 +000045 working_fdt = buf;
Simon Glass018f5302017-08-03 12:22:10 -060046 env_set_hex("fdtaddr", addr);
Kumar Gala54f9c862008-08-15 08:24:39 -050047}
48
Gerald Van Barenae9e97f2008-06-10 22:15:58 -040049/*
Joe Hershbergerbc802952012-08-17 10:34:37 +000050 * Get a value from the fdt and format it to be set in the environment
51 */
Simon Glass382bee52017-08-03 12:22:09 -060052static int fdt_value_env_set(const void *nodep, int len, const char *var)
Joe Hershbergerbc802952012-08-17 10:34:37 +000053{
54 if (is_printable_string(nodep, len))
Simon Glass382bee52017-08-03 12:22:09 -060055 env_set(var, (void *)nodep);
Joe Hershbergerbc802952012-08-17 10:34:37 +000056 else if (len == 4) {
57 char buf[11];
58
Andreas Färberb05bf6c2017-01-09 16:08:02 +010059 sprintf(buf, "0x%08X", fdt32_to_cpu(*(fdt32_t *)nodep));
Simon Glass382bee52017-08-03 12:22:09 -060060 env_set(var, buf);
Joe Hershbergerbc802952012-08-17 10:34:37 +000061 } else if (len%4 == 0 && len <= 20) {
62 /* Needed to print things like sha1 hashes. */
63 char buf[41];
64 int i;
65
66 for (i = 0; i < len; i += sizeof(unsigned int))
67 sprintf(buf + (i * 2), "%08x",
68 *(unsigned int *)(nodep + i));
Simon Glass382bee52017-08-03 12:22:09 -060069 env_set(var, buf);
Joe Hershbergerbc802952012-08-17 10:34:37 +000070 } else {
71 printf("error: unprintable value\n");
72 return 1;
73 }
74 return 0;
75}
76
77/*
Gerald Van Baren781e09e2007-03-31 12:22:10 -040078 * Flattened Device Tree command, see the help for parameter definitions.
79 */
Kim Phillips088f1b12012-10-29 13:34:31 +000080static int do_fdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Gerald Van Baren781e09e2007-03-31 12:22:10 -040081{
Wolfgang Denk47e26b12010-07-17 01:06:04 +020082 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +000083 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -040084
Wolfgang Denk47e26b12010-07-17 01:06:04 +020085 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -040086 * Set the address of the fdt
Wolfgang Denk47e26b12010-07-17 01:06:04 +020087 */
Maxime Ripardf0ed68e2016-07-05 10:26:34 +020088 if (strncmp(argv[1], "ad", 2) == 0) {
Kumar Gala54f9c862008-08-15 08:24:39 -050089 unsigned long addr;
Simon Glass4b578652013-04-20 08:42:44 +000090 int control = 0;
91 struct fdt_header *blob;
Gerald Van Baren781e09e2007-03-31 12:22:10 -040092 /*
93 * Set the address [and length] of the fdt.
94 */
Simon Glass4b578652013-04-20 08:42:44 +000095 argc -= 2;
96 argv += 2;
97/* Temporary #ifdef - some archs don't have fdt_blob yet */
98#ifdef CONFIG_OF_CONTROL
99 if (argc && !strcmp(*argv, "-c")) {
100 control = 1;
101 argc--;
102 argv++;
103 }
104#endif
105 if (argc == 0) {
106 if (control)
107 blob = (struct fdt_header *)gd->fdt_blob;
108 else
109 blob = working_fdt;
110 if (!blob || !fdt_valid(&blob))
Kumar Gala7dbc38a2008-08-15 08:24:35 -0500111 return 1;
Simon Glass4b578652013-04-20 08:42:44 +0000112 printf("The address of the fdt is %#08lx\n",
Joe Hershbergerc71a0162015-02-04 21:56:54 -0600113 control ? (ulong)map_to_sysmem(blob) :
Simon Glassbfebc8c2017-08-03 12:22:13 -0600114 env_get_hex("fdtaddr", 0));
Kumar Gala7dbc38a2008-08-15 08:24:35 -0500115 return 0;
116 }
117
Simon Glass4b578652013-04-20 08:42:44 +0000118 addr = simple_strtoul(argv[0], NULL, 16);
Simon Glassa92fd652013-04-20 08:42:45 +0000119 blob = map_sysmem(addr, 0);
Simon Glass4b578652013-04-20 08:42:44 +0000120 if (!fdt_valid(&blob))
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400121 return 1;
Simon Glass4b578652013-04-20 08:42:44 +0000122 if (control)
123 gd->fdt_blob = blob;
124 else
Joe Hershberger90fbee32015-02-04 21:56:53 -0600125 set_working_fdt_addr(addr);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400126
Simon Glass4b578652013-04-20 08:42:44 +0000127 if (argc >= 2) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400128 int len;
129 int err;
130 /*
131 * Optional new length
132 */
Simon Glass4b578652013-04-20 08:42:44 +0000133 len = simple_strtoul(argv[1], NULL, 16);
134 if (len < fdt_totalsize(blob)) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400135 printf ("New length %d < existing length %d, "
136 "ignoring.\n",
Simon Glass4b578652013-04-20 08:42:44 +0000137 len, fdt_totalsize(blob));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400138 } else {
139 /*
140 * Open in place with a new length.
141 */
Simon Glass4b578652013-04-20 08:42:44 +0000142 err = fdt_open_into(blob, blob, len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400143 if (err != 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400144 printf ("libfdt fdt_open_into(): %s\n",
145 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400146 }
147 }
148 }
149
Marek Vasute02c9452012-09-05 08:34:44 +0200150 return CMD_RET_SUCCESS;
151 }
152
153 if (!working_fdt) {
154 puts(
155 "No FDT memory address configured. Please configure\n"
156 "the FDT address via \"fdt addr <address>\" command.\n"
157 "Aborting!\n");
158 return CMD_RET_FAILURE;
159 }
160
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200161 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500162 * Move the working_fdt
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200163 */
Marek Vasute02c9452012-09-05 08:34:44 +0200164 if (strncmp(argv[1], "mo", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400165 struct fdt_header *newaddr;
166 int len;
167 int err;
168
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200169 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000170 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400171
172 /*
173 * Set the address and length of the fdt.
174 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500175 working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
Simon Glassd14da912013-04-20 08:42:42 +0000176 if (!fdt_valid(&working_fdt))
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400177 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400178
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400179 newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400180
181 /*
182 * If the user specifies a length, use that. Otherwise use the
183 * current length.
184 */
185 if (argc <= 4) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500186 len = fdt_totalsize(working_fdt);
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400187 } else {
188 len = simple_strtoul(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500189 if (len < fdt_totalsize(working_fdt)) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400190 printf ("New length 0x%X < existing length "
191 "0x%X, aborting.\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500192 len, fdt_totalsize(working_fdt));
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400193 return 1;
194 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400195 }
196
197 /*
198 * Copy to the new location.
199 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500200 err = fdt_open_into(working_fdt, newaddr, len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400201 if (err != 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400202 printf ("libfdt fdt_open_into(): %s\n",
203 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400204 return 1;
205 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500206 working_fdt = newaddr;
Fabien Parentf7f191e2016-11-24 15:02:18 +0100207#ifdef CONFIG_OF_SYSTEM_SETUP
208 /* Call the board-specific fixup routine */
209 } else if (strncmp(argv[1], "sys", 3) == 0) {
210 int err = ft_system_setup(working_fdt, gd->bd);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400211
Fabien Parentf7f191e2016-11-24 15:02:18 +0100212 if (err) {
213 printf("Failed to add system information to FDT: %s\n",
214 fdt_strerror(err));
215 return CMD_RET_FAILURE;
216 }
217#endif
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200218 /*
Gerald Van Baren25114032007-05-12 09:47:25 -0400219 * Make a new node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200220 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400221 } else if (strncmp(argv[1], "mk", 2) == 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400222 char *pathp; /* path */
223 char *nodep; /* new node to add */
224 int nodeoffset; /* node offset from libfdt */
225 int err;
226
227 /*
228 * Parameters: Node path, new node to be appended to the path.
229 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200230 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000231 return CMD_RET_USAGE;
Gerald Van Baren25114032007-05-12 09:47:25 -0400232
233 pathp = argv[2];
234 nodep = argv[3];
235
Kim Phillipse489b9c2008-06-10 11:06:17 -0500236 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400237 if (nodeoffset < 0) {
238 /*
239 * Not found or something else bad happened.
240 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500241 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400242 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400243 return 1;
244 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500245 err = fdt_add_subnode(working_fdt, nodeoffset, nodep);
Gerald Van Baren25114032007-05-12 09:47:25 -0400246 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400247 printf ("libfdt fdt_add_subnode(): %s\n",
248 fdt_strerror(err));
Gerald Van Baren25114032007-05-12 09:47:25 -0400249 return 1;
250 }
251
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200252 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500253 * Set the value of a property in the working_fdt.
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200254 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400255 } else if (argv[1][0] == 's') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400256 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400257 char *prop; /* property */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400258 int nodeoffset; /* node offset from libfdt */
Bernhard Messerklinger6dfd65f2017-09-28 11:29:52 +0200259 static char data[SCRATCHPAD] __aligned(4);/* property storage */
Hannes Schmelzer9620d872017-05-30 15:05:44 +0200260 const void *ptmp;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400261 int len; /* new length of the property */
262 int ret; /* return value */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400263
264 /*
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500265 * Parameters: Node path, property, optional value.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400266 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200267 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000268 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400269
270 pathp = argv[2];
271 prop = argv[3];
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400272
Kim Phillipse489b9c2008-06-10 11:06:17 -0500273 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400274 if (nodeoffset < 0) {
275 /*
276 * Not found or something else bad happened.
277 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500278 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400279 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400280 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400281 }
Gerald Van Baren25114032007-05-12 09:47:25 -0400282
Hannes Schmelzer9620d872017-05-30 15:05:44 +0200283 if (argc == 4) {
284 len = 0;
285 } else {
286 ptmp = fdt_getprop(working_fdt, nodeoffset, prop, &len);
287 if (len > SCRATCHPAD) {
288 printf("prop (%d) doesn't fit in scratchpad!\n",
289 len);
290 return 1;
291 }
Hannes Schmelzercee8c352017-08-18 14:41:14 +0200292 if (ptmp != NULL)
293 memcpy(data, ptmp, len);
294
Hannes Schmelzer9620d872017-05-30 15:05:44 +0200295 ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
296 if (ret != 0)
297 return ret;
298 }
299
Kim Phillipse489b9c2008-06-10 11:06:17 -0500300 ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
Gerald Van Baren25114032007-05-12 09:47:25 -0400301 if (ret < 0) {
302 printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
303 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400304 }
305
Joe Hershbergerbc802952012-08-17 10:34:37 +0000306 /********************************************************************
307 * Get the value of a property in the working_fdt.
308 ********************************************************************/
309 } else if (argv[1][0] == 'g') {
310 char *subcmd; /* sub-command */
311 char *pathp; /* path */
312 char *prop; /* property */
313 char *var; /* variable to store result */
314 int nodeoffset; /* node offset from libfdt */
315 const void *nodep; /* property node pointer */
316 int len = 0; /* new length of the property */
317
318 /*
319 * Parameters: Node path, property, optional value.
320 */
321 if (argc < 5)
322 return CMD_RET_USAGE;
323
324 subcmd = argv[2];
325
326 if (argc < 6 && subcmd[0] != 's')
327 return CMD_RET_USAGE;
328
329 var = argv[3];
330 pathp = argv[4];
331 prop = argv[5];
332
333 nodeoffset = fdt_path_offset(working_fdt, pathp);
334 if (nodeoffset < 0) {
335 /*
336 * Not found or something else bad happened.
337 */
338 printf("libfdt fdt_path_offset() returned %s\n",
339 fdt_strerror(nodeoffset));
340 return 1;
341 }
342
343 if (subcmd[0] == 'n' || (subcmd[0] == 's' && argc == 5)) {
344 int reqIndex = -1;
345 int startDepth = fdt_node_depth(
346 working_fdt, nodeoffset);
347 int curDepth = startDepth;
348 int curIndex = -1;
349 int nextNodeOffset = fdt_next_node(
350 working_fdt, nodeoffset, &curDepth);
351
352 if (subcmd[0] == 'n')
353 reqIndex = simple_strtoul(argv[5], NULL, 16);
354
355 while (curDepth > startDepth) {
356 if (curDepth == startDepth + 1)
357 curIndex++;
358 if (subcmd[0] == 'n' && curIndex == reqIndex) {
Simon Glass382bee52017-08-03 12:22:09 -0600359 const char *node_name;
Joe Hershbergerbc802952012-08-17 10:34:37 +0000360
Simon Glass382bee52017-08-03 12:22:09 -0600361 node_name = fdt_get_name(working_fdt,
362 nextNodeOffset,
363 NULL);
364 env_set(var, node_name);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000365 return 0;
366 }
367 nextNodeOffset = fdt_next_node(
368 working_fdt, nextNodeOffset, &curDepth);
369 if (nextNodeOffset < 0)
370 break;
371 }
372 if (subcmd[0] == 's') {
373 /* get the num nodes at this level */
Simon Glass018f5302017-08-03 12:22:10 -0600374 env_set_ulong(var, curIndex + 1);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000375 } else {
376 /* node index not found */
377 printf("libfdt node not found\n");
378 return 1;
379 }
380 } else {
381 nodep = fdt_getprop(
382 working_fdt, nodeoffset, prop, &len);
383 if (len == 0) {
384 /* no property value */
Simon Glass382bee52017-08-03 12:22:09 -0600385 env_set(var, "");
Joe Hershbergerbc802952012-08-17 10:34:37 +0000386 return 0;
Simon Glass72c98ed2017-06-07 10:28:41 -0600387 } else if (nodep && len > 0) {
Joe Hershbergerbc802952012-08-17 10:34:37 +0000388 if (subcmd[0] == 'v') {
389 int ret;
390
Simon Glass382bee52017-08-03 12:22:09 -0600391 ret = fdt_value_env_set(nodep, len,
392 var);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000393 if (ret != 0)
394 return ret;
395 } else if (subcmd[0] == 'a') {
396 /* Get address */
397 char buf[11];
398
Tom Rini085b9c32012-10-29 14:53:18 +0000399 sprintf(buf, "0x%p", nodep);
Simon Glass382bee52017-08-03 12:22:09 -0600400 env_set(var, buf);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000401 } else if (subcmd[0] == 's') {
402 /* Get size */
403 char buf[11];
404
405 sprintf(buf, "0x%08X", len);
Simon Glass382bee52017-08-03 12:22:09 -0600406 env_set(var, buf);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000407 } else
408 return CMD_RET_USAGE;
409 return 0;
410 } else {
411 printf("libfdt fdt_getprop(): %s\n",
412 fdt_strerror(len));
413 return 1;
414 }
415 }
416
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200417 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400418 * Print (recursive) / List (single level)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200419 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400420 } else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400421 int depth = MAX_LEVEL; /* how deep to print */
422 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400423 char *prop; /* property */
424 int ret; /* return value */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500425 static char root[2] = "/";
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400426
427 /*
428 * list is an alias for print, but limited to 1 level
429 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400430 if (argv[1][0] == 'l') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400431 depth = 1;
432 }
433
434 /*
435 * Get the starting path. The root node is an oddball,
436 * the offset is zero and has no name.
437 */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500438 if (argc == 2)
439 pathp = root;
440 else
441 pathp = argv[2];
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400442 if (argc > 3)
443 prop = argv[3];
444 else
445 prop = NULL;
446
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400447 ret = fdt_print(pathp, prop, depth);
448 if (ret != 0)
449 return ret;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400450
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200451 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400452 * Remove a property/node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200453 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400454 } else if (strncmp(argv[1], "rm", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400455 int nodeoffset; /* node offset from libfdt */
456 int err;
457
458 /*
459 * Get the path. The root node is an oddball, the offset
460 * is zero and has no name.
461 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500462 nodeoffset = fdt_path_offset (working_fdt, argv[2]);
Gerald Van Baren25114032007-05-12 09:47:25 -0400463 if (nodeoffset < 0) {
464 /*
465 * Not found or something else bad happened.
466 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500467 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400468 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400469 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400470 }
471 /*
472 * Do the delete. A fourth parameter means delete a property,
473 * otherwise delete the node.
474 */
475 if (argc > 3) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500476 err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400477 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400478 printf("libfdt fdt_delprop(): %s\n",
479 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400480 return err;
481 }
482 } else {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500483 err = fdt_del_node(working_fdt, nodeoffset);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400484 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400485 printf("libfdt fdt_del_node(): %s\n",
486 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400487 return err;
488 }
489 }
Kumar Gala804887e2008-02-15 03:34:36 -0600490
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200491 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600492 * Display header info
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200493 */
Kumar Gala804887e2008-02-15 03:34:36 -0600494 } else if (argv[1][0] == 'h') {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500495 u32 version = fdt_version(working_fdt);
496 printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
497 printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
498 fdt_totalsize(working_fdt));
499 printf("off_dt_struct:\t\t0x%x\n",
500 fdt_off_dt_struct(working_fdt));
501 printf("off_dt_strings:\t\t0x%x\n",
502 fdt_off_dt_strings(working_fdt));
503 printf("off_mem_rsvmap:\t\t0x%x\n",
504 fdt_off_mem_rsvmap(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600505 printf("version:\t\t%d\n", version);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500506 printf("last_comp_version:\t%d\n",
507 fdt_last_comp_version(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600508 if (version >= 2)
509 printf("boot_cpuid_phys:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500510 fdt_boot_cpuid_phys(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600511 if (version >= 3)
512 printf("size_dt_strings:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500513 fdt_size_dt_strings(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600514 if (version >= 17)
515 printf("size_dt_struct:\t\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500516 fdt_size_dt_struct(working_fdt));
517 printf("number mem_rsv:\t\t0x%x\n",
518 fdt_num_mem_rsv(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600519 printf("\n");
520
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200521 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600522 * Set boot cpu id
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200523 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400524 } else if (strncmp(argv[1], "boo", 3) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600525 unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500526 fdt_set_boot_cpuid_phys(working_fdt, tmp);
Kumar Gala804887e2008-02-15 03:34:36 -0600527
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200528 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600529 * memory command
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200530 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400531 } else if (strncmp(argv[1], "me", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600532 uint64_t addr, size;
533 int err;
Heiko Schocher4b142fe2009-12-03 11:21:21 +0100534 addr = simple_strtoull(argv[2], NULL, 16);
535 size = simple_strtoull(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500536 err = fdt_fixup_memory(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600537 if (err < 0)
538 return err;
539
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200540 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600541 * mem reserve commands
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200542 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400543 } else if (strncmp(argv[1], "rs", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600544 if (argv[2][0] == 'p') {
545 uint64_t addr, size;
Kim Phillipse489b9c2008-06-10 11:06:17 -0500546 int total = fdt_num_mem_rsv(working_fdt);
Kumar Gala804887e2008-02-15 03:34:36 -0600547 int j, err;
548 printf("index\t\t start\t\t size\n");
549 printf("-------------------------------"
550 "-----------------\n");
551 for (j = 0; j < total; j++) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500552 err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
Kumar Gala804887e2008-02-15 03:34:36 -0600553 if (err < 0) {
554 printf("libfdt fdt_get_mem_rsv(): %s\n",
555 fdt_strerror(err));
556 return err;
557 }
558 printf(" %x\t%08x%08x\t%08x%08x\n", j,
559 (u32)(addr >> 32),
560 (u32)(addr & 0xffffffff),
561 (u32)(size >> 32),
562 (u32)(size & 0xffffffff));
563 }
564 } else if (argv[2][0] == 'a') {
565 uint64_t addr, size;
566 int err;
Kumar Gala804887e2008-02-15 03:34:36 -0600567 addr = simple_strtoull(argv[3], NULL, 16);
568 size = simple_strtoull(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500569 err = fdt_add_mem_rsv(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600570
571 if (err < 0) {
572 printf("libfdt fdt_add_mem_rsv(): %s\n",
573 fdt_strerror(err));
574 return err;
575 }
576 } else if (argv[2][0] == 'd') {
577 unsigned long idx = simple_strtoul(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500578 int err = fdt_del_mem_rsv(working_fdt, idx);
Kumar Gala804887e2008-02-15 03:34:36 -0600579
580 if (err < 0) {
581 printf("libfdt fdt_del_mem_rsv(): %s\n",
582 fdt_strerror(err));
583 return err;
584 }
585 } else {
586 /* Unrecognized command */
Simon Glass4c12eeb2011-12-10 08:44:01 +0000587 return CMD_RET_USAGE;
Kumar Gala804887e2008-02-15 03:34:36 -0600588 }
Kim Phillips99dffca2007-07-17 13:57:04 -0500589 }
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400590#ifdef CONFIG_OF_BOARD_SETUP
Kim Phillips99dffca2007-07-17 13:57:04 -0500591 /* Call the board-specific fixup routine */
Simon Glass4ba98dc2014-10-23 18:58:48 -0600592 else if (strncmp(argv[1], "boa", 3) == 0) {
593 int err = ft_board_setup(working_fdt, gd->bd);
594
595 if (err) {
596 printf("Failed to update board information in FDT: %s\n",
597 fdt_strerror(err));
598 return CMD_RET_FAILURE;
599 }
600 }
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400601#endif
Kim Phillips99dffca2007-07-17 13:57:04 -0500602 /* Create a chosen node */
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100603 else if (strncmp(argv[1], "cho", 3) == 0) {
Kumar Galaf953d992008-08-15 08:24:34 -0500604 unsigned long initrd_start = 0, initrd_end = 0;
605
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200606 if ((argc != 2) && (argc != 4))
Simon Glass4c12eeb2011-12-10 08:44:01 +0000607 return CMD_RET_USAGE;
Kumar Galaf953d992008-08-15 08:24:34 -0500608
609 if (argc == 4) {
610 initrd_start = simple_strtoul(argv[2], NULL, 16);
611 initrd_end = simple_strtoul(argv[3], NULL, 16);
612 }
613
Masahiro Yamadabc6ed0f2014-04-18 17:41:00 +0900614 fdt_chosen(working_fdt);
Masahiro Yamadadbe963a2014-04-18 17:40:59 +0900615 fdt_initrd(working_fdt, initrd_start, initrd_end);
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100616
617#if defined(CONFIG_FIT_SIGNATURE)
618 } else if (strncmp(argv[1], "che", 3) == 0) {
619 int cfg_noffset;
620 int ret;
621 unsigned long addr;
622 struct fdt_header *blob;
623
624 if (!working_fdt)
625 return CMD_RET_FAILURE;
626
627 if (argc > 2) {
628 addr = simple_strtoul(argv[2], NULL, 16);
629 blob = map_sysmem(addr, 0);
630 } else {
631 blob = (struct fdt_header *)gd->fdt_blob;
632 }
633 if (!fdt_valid(&blob))
634 return 1;
635
636 gd->fdt_blob = blob;
637 cfg_noffset = fit_conf_get_node(working_fdt, NULL);
638 if (!cfg_noffset) {
639 printf("Could not find configuration node: %s\n",
640 fdt_strerror(cfg_noffset));
641 return CMD_RET_FAILURE;
642 }
643
644 ret = fit_config_verify(working_fdt, cfg_noffset);
Simon Glass12df2ab2014-06-12 07:24:45 -0600645 if (ret == 0)
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100646 return CMD_RET_SUCCESS;
647 else
648 return CMD_RET_FAILURE;
649#endif
650
Kumar Gala40afac22008-08-15 08:24:44 -0500651 }
Maxime Riparde6628ad2016-07-05 10:26:45 +0200652#ifdef CONFIG_OF_LIBFDT_OVERLAY
653 /* apply an overlay */
654 else if (strncmp(argv[1], "ap", 2) == 0) {
655 unsigned long addr;
656 struct fdt_header *blob;
Stefan Agner082b1412016-12-20 15:58:45 +0100657 int ret;
Maxime Riparde6628ad2016-07-05 10:26:45 +0200658
659 if (argc != 3)
660 return CMD_RET_USAGE;
661
662 if (!working_fdt)
663 return CMD_RET_FAILURE;
664
665 addr = simple_strtoul(argv[2], NULL, 16);
666 blob = map_sysmem(addr, 0);
667 if (!fdt_valid(&blob))
668 return CMD_RET_FAILURE;
669
Pantelis Antoniou81ecc5d2017-09-04 23:12:12 +0300670 /* apply method prints messages on error */
671 ret = fdt_overlay_apply_verbose(working_fdt, blob);
672 if (ret)
Maxime Riparde6628ad2016-07-05 10:26:45 +0200673 return CMD_RET_FAILURE;
674 }
675#endif
Kumar Gala40afac22008-08-15 08:24:44 -0500676 /* resize the fdt */
677 else if (strncmp(argv[1], "re", 2) == 0) {
Hannes Schmelzeref476832016-09-20 18:10:43 +0200678 uint extrasize;
679 if (argc > 2)
680 extrasize = simple_strtoul(argv[2], NULL, 16);
681 else
682 extrasize = 0;
683 fdt_shrink_to_minimum(working_fdt, extrasize);
Kumar Gala40afac22008-08-15 08:24:44 -0500684 }
685 else {
Kim Phillips99dffca2007-07-17 13:57:04 -0500686 /* Unrecognized command */
Simon Glass4c12eeb2011-12-10 08:44:01 +0000687 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400688 }
689
690 return 0;
691}
692
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400693/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400694
Simon Glassd14da912013-04-20 08:42:42 +0000695/**
696 * fdt_valid() - Check if an FDT is valid. If not, change it to NULL
697 *
698 * @blobp: Pointer to FDT pointer
699 * @return 1 if OK, 0 if bad (in which case *blobp is set to NULL)
700 */
701static int fdt_valid(struct fdt_header **blobp)
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400702{
Simon Glassd14da912013-04-20 08:42:42 +0000703 const void *blob = *blobp;
704 int err;
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400705
Simon Glassd14da912013-04-20 08:42:42 +0000706 if (blob == NULL) {
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400707 printf ("The address of the fdt is invalid (NULL).\n");
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400708 return 0;
709 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400710
Simon Glassd14da912013-04-20 08:42:42 +0000711 err = fdt_check_header(blob);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400712 if (err == 0)
713 return 1; /* valid */
714
715 if (err < 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400716 printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400717 /*
718 * Be more informative on bad version.
719 */
720 if (err == -FDT_ERR_BADVERSION) {
Simon Glassd14da912013-04-20 08:42:42 +0000721 if (fdt_version(blob) <
Kim Phillipse489b9c2008-06-10 11:06:17 -0500722 FDT_FIRST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700723 printf (" - too old, fdt %d < %d",
Simon Glassd14da912013-04-20 08:42:42 +0000724 fdt_version(blob),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400725 FDT_FIRST_SUPPORTED_VERSION);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400726 }
Simon Glassd14da912013-04-20 08:42:42 +0000727 if (fdt_last_comp_version(blob) >
Kim Phillipse489b9c2008-06-10 11:06:17 -0500728 FDT_LAST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700729 printf (" - too new, fdt %d > %d",
Simon Glassd14da912013-04-20 08:42:42 +0000730 fdt_version(blob),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400731 FDT_LAST_SUPPORTED_VERSION);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400732 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400733 }
734 printf("\n");
Simon Glassd14da912013-04-20 08:42:42 +0000735 *blobp = NULL;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400736 return 0;
737 }
738 return 1;
739}
740
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400741/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400742
743/*
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400744 * Parse the user's input, partially heuristic. Valid formats:
Andy Fleming4abd8442008-03-31 20:45:56 -0500745 * <0x00112233 4 05> - an array of cells. Numbers follow standard
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200746 * C conventions.
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400747 * [00 11 22 .. nn] - byte stream
748 * "string" - If the the value doesn't start with "<" or "[", it is
749 * treated as a string. Note that the quotes are
750 * stripped by the parser before we get the string.
Andy Fleming4abd8442008-03-31 20:45:56 -0500751 * newval: An array of strings containing the new property as specified
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200752 * on the command line
Andy Fleming4abd8442008-03-31 20:45:56 -0500753 * count: The number of strings in the array
754 * data: A bytestream to be placed in the property
755 * len: The length of the resulting bytestream
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400756 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200757static int fdt_parse_prop(char * const *newval, int count, char *data, int *len)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400758{
759 char *cp; /* temporary char pointer */
Andy Fleming4abd8442008-03-31 20:45:56 -0500760 char *newp; /* temporary newval char pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400761 unsigned long tmp; /* holds converted values */
Andy Fleming4abd8442008-03-31 20:45:56 -0500762 int stridx = 0;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400763
Andy Fleming4abd8442008-03-31 20:45:56 -0500764 *len = 0;
765 newp = newval[0];
766
767 /* An array of cells */
768 if (*newp == '<') {
769 newp++;
770 while ((*newp != '>') && (stridx < count)) {
771 /*
772 * Keep searching until we find that last ">"
773 * That way users don't have to escape the spaces
774 */
775 if (*newp == '\0') {
776 newp = newval[++stridx];
777 continue;
778 }
779
780 cp = newp;
781 tmp = simple_strtoul(cp, &newp, 0);
Hannes Schmelzer9620d872017-05-30 15:05:44 +0200782 if (*cp != '?')
783 *(fdt32_t *)data = cpu_to_fdt32(tmp);
784 else
785 newp++;
786
Andy Fleming4abd8442008-03-31 20:45:56 -0500787 data += 4;
788 *len += 4;
789
790 /* If the ptr didn't advance, something went wrong */
791 if ((newp - cp) <= 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400792 printf("Sorry, I could not convert \"%s\"\n",
793 cp);
794 return 1;
795 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500796
797 while (*newp == ' ')
798 newp++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400799 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500800
801 if (*newp != '>') {
802 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400803 return 1;
804 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500805 } else if (*newp == '[') {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400806 /*
807 * Byte stream. Convert the values.
808 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500809 newp++;
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500810 while ((stridx < count) && (*newp != ']')) {
811 while (*newp == ' ')
812 newp++;
813 if (*newp == '\0') {
814 newp = newval[++stridx];
815 continue;
816 }
817 if (!isxdigit(*newp))
818 break;
Andy Fleming4abd8442008-03-31 20:45:56 -0500819 tmp = simple_strtoul(newp, &newp, 16);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400820 *data++ = tmp & 0xFF;
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400821 *len = *len + 1;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400822 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500823 if (*newp != ']') {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700824 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400825 return 1;
826 }
827 } else {
828 /*
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500829 * Assume it is one or more strings. Copy it into our
830 * data area for convenience (including the
831 * terminating '\0's).
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400832 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500833 while (stridx < count) {
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500834 size_t length = strlen(newp) + 1;
Andy Fleming4abd8442008-03-31 20:45:56 -0500835 strcpy(data, newp);
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500836 data += length;
837 *len += length;
Andy Fleming4abd8442008-03-31 20:45:56 -0500838 newp = newval[++stridx];
839 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400840 }
841 return 0;
842}
843
844/****************************************************************************/
845
846/*
847 * Heuristic to guess if this is a string or concatenated strings.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400848 */
849
850static int is_printable_string(const void *data, int len)
851{
852 const char *s = data;
853
854 /* zero length is not */
855 if (len == 0)
856 return 0;
857
Joe Hershberger8805bee2012-08-17 10:34:38 +0000858 /* must terminate with zero or '\n' */
859 if (s[len - 1] != '\0' && s[len - 1] != '\n')
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400860 return 0;
861
862 /* printable or a null byte (concatenated strings) */
Joe Hershberger8805bee2012-08-17 10:34:38 +0000863 while (((*s == '\0') || isprint(*s) || isspace(*s)) && (len > 0)) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400864 /*
865 * If we see a null, there are three possibilities:
866 * 1) If len == 1, it is the end of the string, printable
867 * 2) Next character also a null, not printable.
868 * 3) Next character not a null, continue to check.
869 */
870 if (s[0] == '\0') {
871 if (len == 1)
872 return 1;
873 if (s[1] == '\0')
874 return 0;
875 }
876 s++;
877 len--;
878 }
879
880 /* Not the null termination, or not done yet: not printable */
881 if (*s != '\0' || (len != 0))
882 return 0;
883
884 return 1;
885}
886
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400887
888/*
889 * Print the property in the best format, a heuristic guess. Print as
890 * a string, concatenated strings, a byte, word, double word, or (if all
891 * else fails) it is printed as a stream of bytes.
892 */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400893static void print_data(const void *data, int len)
894{
895 int j;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400896
897 /* no data, don't print */
898 if (len == 0)
899 return;
900
901 /*
902 * It is a string, but it may have multiple strings (embedded '\0's).
903 */
904 if (is_printable_string(data, len)) {
905 puts("\"");
906 j = 0;
907 while (j < len) {
908 if (j > 0)
909 puts("\", \"");
910 puts(data);
911 j += strlen(data) + 1;
912 data += strlen(data) + 1;
913 }
914 puts("\"");
915 return;
916 }
917
Andy Fleming4abd8442008-03-31 20:45:56 -0500918 if ((len %4) == 0) {
Simon Glass5d927b42017-05-17 03:25:19 -0600919 if (len > CMD_FDT_MAX_DUMP)
Tom Rini085b9c32012-10-29 14:53:18 +0000920 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000921 else {
Kim Phillips088f1b12012-10-29 13:34:31 +0000922 const __be32 *p;
Andy Fleming4abd8442008-03-31 20:45:56 -0500923
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000924 printf("<");
925 for (j = 0, p = data; j < len/4; j++)
926 printf("0x%08x%s", fdt32_to_cpu(p[j]),
927 j < (len/4 - 1) ? " " : "");
928 printf(">");
929 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500930 } else { /* anything else... hexdump */
Simon Glass5d927b42017-05-17 03:25:19 -0600931 if (len > CMD_FDT_MAX_DUMP)
Tom Rini085b9c32012-10-29 14:53:18 +0000932 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000933 else {
934 const u8 *s;
Andy Fleming4abd8442008-03-31 20:45:56 -0500935
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000936 printf("[");
937 for (j = 0, s = data; j < len; j++)
938 printf("%02x%s", s[j], j < len - 1 ? " " : "");
939 printf("]");
940 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400941 }
942}
943
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400944/****************************************************************************/
945
946/*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500947 * Recursively print (a portion of) the working_fdt. The depth parameter
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400948 * determines how deeply nested the fdt is printed.
949 */
Kumar Galadbaf07c2007-11-21 14:07:46 -0600950static int fdt_print(const char *pathp, char *prop, int depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400951{
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400952 static char tabs[MAX_LEVEL+1] =
953 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
954 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
Kumar Galadbaf07c2007-11-21 14:07:46 -0600955 const void *nodep; /* property node pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400956 int nodeoffset; /* node offset from libfdt */
957 int nextoffset; /* next node offset from libfdt */
958 uint32_t tag; /* tag */
959 int len; /* length of the property */
960 int level = 0; /* keep track of nesting level */
Gerald Van Baren91623522007-11-22 17:23:23 -0500961 const struct fdt_property *fdt_prop;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400962
Kim Phillipse489b9c2008-06-10 11:06:17 -0500963 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400964 if (nodeoffset < 0) {
965 /*
966 * Not found or something else bad happened.
967 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500968 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400969 fdt_strerror(nodeoffset));
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400970 return 1;
971 }
972 /*
973 * The user passed in a property as well as node path.
974 * Print only the given property and then return.
975 */
976 if (prop) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500977 nodep = fdt_getprop (working_fdt, nodeoffset, prop, &len);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400978 if (len == 0) {
979 /* no property value */
980 printf("%s %s\n", pathp, prop);
981 return 0;
Simon Glass9f952672017-06-07 10:28:42 -0600982 } else if (nodep && len > 0) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -0500983 printf("%s = ", prop);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400984 print_data (nodep, len);
985 printf("\n");
986 return 0;
987 } else {
988 printf ("libfdt fdt_getprop(): %s\n",
989 fdt_strerror(len));
990 return 1;
991 }
992 }
993
994 /*
995 * The user passed in a node path and no property,
996 * print the node and all subnodes.
997 */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400998 while(level >= 0) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500999 tag = fdt_next_tag(working_fdt, nodeoffset, &nextoffset);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001000 switch(tag) {
1001 case FDT_BEGIN_NODE:
Kim Phillipse489b9c2008-06-10 11:06:17 -05001002 pathp = fdt_get_name(working_fdt, nodeoffset, NULL);
Gerald Van Baren91623522007-11-22 17:23:23 -05001003 if (level <= depth) {
1004 if (pathp == NULL)
1005 pathp = "/* NULL pointer error */";
1006 if (*pathp == '\0')
1007 pathp = "/"; /* root is nameless */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001008 printf("%s%s {\n",
1009 &tabs[MAX_LEVEL - level], pathp);
Gerald Van Baren91623522007-11-22 17:23:23 -05001010 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001011 level++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001012 if (level >= MAX_LEVEL) {
Gerald Van Baren91623522007-11-22 17:23:23 -05001013 printf("Nested too deep, aborting.\n");
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001014 return 1;
1015 }
1016 break;
1017 case FDT_END_NODE:
1018 level--;
Gerald Van Baren91623522007-11-22 17:23:23 -05001019 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001020 printf("%s};\n", &tabs[MAX_LEVEL - level]);
1021 if (level == 0) {
1022 level = -1; /* exit the loop */
1023 }
1024 break;
1025 case FDT_PROP:
Kim Phillipse489b9c2008-06-10 11:06:17 -05001026 fdt_prop = fdt_offset_ptr(working_fdt, nodeoffset,
Gerald Van Baren91623522007-11-22 17:23:23 -05001027 sizeof(*fdt_prop));
Kim Phillipse489b9c2008-06-10 11:06:17 -05001028 pathp = fdt_string(working_fdt,
Gerald Van Baren91623522007-11-22 17:23:23 -05001029 fdt32_to_cpu(fdt_prop->nameoff));
1030 len = fdt32_to_cpu(fdt_prop->len);
1031 nodep = fdt_prop->data;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001032 if (len < 0) {
1033 printf ("libfdt fdt_getprop(): %s\n",
1034 fdt_strerror(len));
1035 return 1;
1036 } else if (len == 0) {
1037 /* the property has no value */
Gerald Van Baren91623522007-11-22 17:23:23 -05001038 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001039 printf("%s%s;\n",
1040 &tabs[MAX_LEVEL - level],
1041 pathp);
1042 } else {
Gerald Van Baren91623522007-11-22 17:23:23 -05001043 if (level <= depth) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -05001044 printf("%s%s = ",
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001045 &tabs[MAX_LEVEL - level],
1046 pathp);
1047 print_data (nodep, len);
1048 printf(";\n");
1049 }
1050 }
1051 break;
1052 case FDT_NOP:
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -07001053 printf("%s/* NOP */\n", &tabs[MAX_LEVEL - level]);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001054 break;
1055 case FDT_END:
1056 return 1;
1057 default:
Gerald Van Baren91623522007-11-22 17:23:23 -05001058 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001059 printf("Unknown tag 0x%08X\n", tag);
1060 return 1;
1061 }
1062 nodeoffset = nextoffset;
1063 }
1064 return 0;
1065}
1066
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001067/********************************************************************/
Kim Phillips088f1b12012-10-29 13:34:31 +00001068#ifdef CONFIG_SYS_LONGHELP
1069static char fdt_help_text[] =
Simon Glass4b578652013-04-20 08:42:44 +00001070 "addr [-c] <addr> [<length>] - Set the [control] fdt location to <addr>\n"
Maxime Riparde6628ad2016-07-05 10:26:45 +02001071#ifdef CONFIG_OF_LIBFDT_OVERLAY
1072 "fdt apply <addr> - Apply overlay to the DT\n"
1073#endif
Gerald Van Barenfd61e552007-06-25 23:25:28 -04001074#ifdef CONFIG_OF_BOARD_SETUP
1075 "fdt boardsetup - Do board-specific set up\n"
1076#endif
Simon Glassc654b512014-10-23 18:58:54 -06001077#ifdef CONFIG_OF_SYSTEM_SETUP
1078 "fdt systemsetup - Do system-specific set up\n"
1079#endif
Gerald Van Baren238cb7a2008-01-05 15:33:29 -05001080 "fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n"
Hannes Schmelzeref476832016-09-20 18:10:43 +02001081 "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 -04001082 "fdt print <path> [<prop>] - Recursive print starting at <path>\n"
1083 "fdt list <path> [<prop>] - Print one level starting at <path>\n"
Joe Hershbergerbc802952012-08-17 10:34:37 +00001084 "fdt get value <var> <path> <prop> - Get <property> and store in <var>\n"
1085 "fdt get name <var> <path> <index> - Get name of node <index> and store in <var>\n"
1086 "fdt get addr <var> <path> <prop> - Get start address of <property> and store in <var>\n"
1087 "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 -04001088 "fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
1089 "fdt mknode <path> <node> - Create a new node after <path>\n"
1090 "fdt rm <path> [<prop>] - Delete the node or <property>\n"
Kumar Gala804887e2008-02-15 03:34:36 -06001091 "fdt header - Display header info\n"
1092 "fdt bootcpu <id> - Set boot cpuid\n"
1093 "fdt memory <addr> <size> - Add/Update memory node\n"
1094 "fdt rsvmem print - Show current mem reserves\n"
1095 "fdt rsvmem add <addr> <size> - Add a mem reserve\n"
1096 "fdt rsvmem delete <index> - Delete a mem reserves\n"
Kumar Galaf953d992008-08-15 08:24:34 -05001097 "fdt chosen [<start> <end>] - Add/update the /chosen branch in the tree\n"
1098 " <start>/<end> - initrd start/end addr\n"
Heiko Schocher097dd3e2014-03-03 12:19:24 +01001099#if defined(CONFIG_FIT_SIGNATURE)
1100 "fdt checksign [<addr>] - check FIT signature\n"
1101 " <start> - addr of key blob\n"
1102 " default gd->fdt_blob\n"
1103#endif
Robert P. J. Day1cc0a9f2016-05-04 04:47:31 -04001104 "NOTE: Dereference aliases by omitting the leading '/', "
Kim Phillips088f1b12012-10-29 13:34:31 +00001105 "e.g. fdt print ethernet0.";
1106#endif
1107
1108U_BOOT_CMD(
1109 fdt, 255, 0, do_fdt,
1110 "flattened device tree utility commands", fdt_help_text
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001111);