blob: 8a19a3fdbf2ef15171a58d6b5ca1faaa01691990 [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Gerald Van Barenade8ef42007-03-31 12:22:10 -04002/*
3 * (C) Copyright 2007
4 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
5 * Based on code written by:
6 * Pantelis Antoniou <pantelis.antoniou@gmail.com> and
7 * Matthew McClintock <msm@freescale.com>
Gerald Van Barenade8ef42007-03-31 12:22:10 -04008 */
9
10#include <common.h>
11#include <command.h>
12#include <linux/ctype.h>
13#include <linux/types.h>
Gerald Van Barenade8ef42007-03-31 12:22:10 -040014#include <asm/global_data.h>
Masahiro Yamada75f82d02018-03-05 01:20:11 +090015#include <linux/libfdt.h>
Gerald Van Barenc4a57ea2007-04-06 14:19:43 -040016#include <fdt_support.h>
Joe Hershberger65b905b2015-03-22 17:08:59 -050017#include <mapmem.h>
Simon Glassb7fc7102013-04-20 08:42:45 +000018#include <asm/io.h>
Gerald Van Barenade8ef42007-03-31 12:22:10 -040019
20#define MAX_LEVEL 32 /* how deeply nested we will go */
Gerald Van Baren5606a362007-06-25 23:25:28 -040021#define SCRATCHPAD 1024 /* bytes of scratchpad memory */
Simon Glassfa6b02f2017-05-17 03:25:19 -060022#define CMD_FDT_MAX_DUMP 64
Gerald Van Barenade8ef42007-03-31 12:22:10 -040023
24/*
25 * Global data (for the gd->bd)
26 */
27DECLARE_GLOBAL_DATA_PTR;
28
Simon Glass546b9a32013-04-20 08:42:42 +000029static int fdt_valid(struct fdt_header **blobp);
Wolfgang Denk6262d0212010-06-28 22:00:46 +020030static int fdt_parse_prop(char *const*newval, int count, char *data, int *len);
Kumar Gala1e386af2007-11-21 14:07:46 -060031static int fdt_print(const char *pathp, char *prop, int depth);
Joe Hershbergerfc5abf02012-08-17 10:34:37 +000032static int is_printable_string(const void *data, int len);
Gerald Van Barenade8ef42007-03-31 12:22:10 -040033
Gerald Van Barenade8ef42007-03-31 12:22:10 -040034/*
Gerald Van Barene81ce612008-06-10 22:15:58 -040035 * The working_fdt points to our working flattened device tree.
36 */
37struct fdt_header *working_fdt;
38
Joe Hershberger3d4ea4c2015-02-04 21:56:53 -060039void set_working_fdt_addr(ulong addr)
Kumar Gala9f4e7e42008-08-15 08:24:39 -050040{
Simon Glassb7fc7102013-04-20 08:42:45 +000041 void *buf;
42
Joe Hershberger3d4ea4c2015-02-04 21:56:53 -060043 buf = map_sysmem(addr, 0);
Simon Glassb7fc7102013-04-20 08:42:45 +000044 working_fdt = buf;
Simon Glass4d949a22017-08-03 12:22:10 -060045 env_set_hex("fdtaddr", addr);
Kumar Gala9f4e7e42008-08-15 08:24:39 -050046}
47
Gerald Van Barene81ce612008-06-10 22:15:58 -040048/*
Joe Hershbergerfc5abf02012-08-17 10:34:37 +000049 * Get a value from the fdt and format it to be set in the environment
50 */
Simon Glass6a38e412017-08-03 12:22:09 -060051static int fdt_value_env_set(const void *nodep, int len, const char *var)
Joe Hershbergerfc5abf02012-08-17 10:34:37 +000052{
53 if (is_printable_string(nodep, len))
Simon Glass6a38e412017-08-03 12:22:09 -060054 env_set(var, (void *)nodep);
Joe Hershbergerfc5abf02012-08-17 10:34:37 +000055 else if (len == 4) {
56 char buf[11];
57
Andreas Färber1a09cd22017-01-09 16:08:02 +010058 sprintf(buf, "0x%08X", fdt32_to_cpu(*(fdt32_t *)nodep));
Simon Glass6a38e412017-08-03 12:22:09 -060059 env_set(var, buf);
Joe Hershbergerfc5abf02012-08-17 10:34:37 +000060 } else if (len%4 == 0 && len <= 20) {
61 /* Needed to print things like sha1 hashes. */
62 char buf[41];
63 int i;
64
65 for (i = 0; i < len; i += sizeof(unsigned int))
66 sprintf(buf + (i * 2), "%08x",
67 *(unsigned int *)(nodep + i));
Simon Glass6a38e412017-08-03 12:22:09 -060068 env_set(var, buf);
Joe Hershbergerfc5abf02012-08-17 10:34:37 +000069 } else {
70 printf("error: unprintable value\n");
71 return 1;
72 }
73 return 0;
74}
75
76/*
Gerald Van Barenade8ef42007-03-31 12:22:10 -040077 * Flattened Device Tree command, see the help for parameter definitions.
78 */
Kim Phillipsdc00a682012-10-29 13:34:31 +000079static int do_fdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Gerald Van Barenade8ef42007-03-31 12:22:10 -040080{
Wolfgang Denk3b683112010-07-17 01:06:04 +020081 if (argc < 2)
Simon Glassa06dfc72011-12-10 08:44:01 +000082 return CMD_RET_USAGE;
Gerald Van Barenade8ef42007-03-31 12:22:10 -040083
Wolfgang Denk3b683112010-07-17 01:06:04 +020084 /*
Gerald Van Barenade8ef42007-03-31 12:22:10 -040085 * Set the address of the fdt
Wolfgang Denk3b683112010-07-17 01:06:04 +020086 */
Maxime Ripard09caa012016-07-05 10:26:34 +020087 if (strncmp(argv[1], "ad", 2) == 0) {
Kumar Gala9f4e7e42008-08-15 08:24:39 -050088 unsigned long addr;
Simon Glass0bfc4cc2013-04-20 08:42:44 +000089 int control = 0;
90 struct fdt_header *blob;
Gerald Van Barenade8ef42007-03-31 12:22:10 -040091 /*
92 * Set the address [and length] of the fdt.
93 */
Simon Glass0bfc4cc2013-04-20 08:42:44 +000094 argc -= 2;
95 argv += 2;
96/* Temporary #ifdef - some archs don't have fdt_blob yet */
97#ifdef CONFIG_OF_CONTROL
98 if (argc && !strcmp(*argv, "-c")) {
99 control = 1;
100 argc--;
101 argv++;
102 }
103#endif
104 if (argc == 0) {
105 if (control)
106 blob = (struct fdt_header *)gd->fdt_blob;
107 else
108 blob = working_fdt;
109 if (!blob || !fdt_valid(&blob))
Kumar Gala708a18b2008-08-15 08:24:35 -0500110 return 1;
Simon Glass0bfc4cc2013-04-20 08:42:44 +0000111 printf("The address of the fdt is %#08lx\n",
Joe Hershberger6256dcc2015-02-04 21:56:54 -0600112 control ? (ulong)map_to_sysmem(blob) :
Simon Glass22c34c22017-08-03 12:22:13 -0600113 env_get_hex("fdtaddr", 0));
Kumar Gala708a18b2008-08-15 08:24:35 -0500114 return 0;
115 }
116
Simon Glass0bfc4cc2013-04-20 08:42:44 +0000117 addr = simple_strtoul(argv[0], NULL, 16);
Simon Glassb7fc7102013-04-20 08:42:45 +0000118 blob = map_sysmem(addr, 0);
Simon Glass0bfc4cc2013-04-20 08:42:44 +0000119 if (!fdt_valid(&blob))
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400120 return 1;
Simon Glass0bfc4cc2013-04-20 08:42:44 +0000121 if (control)
122 gd->fdt_blob = blob;
123 else
Joe Hershberger3d4ea4c2015-02-04 21:56:53 -0600124 set_working_fdt_addr(addr);
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400125
Simon Glass0bfc4cc2013-04-20 08:42:44 +0000126 if (argc >= 2) {
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400127 int len;
128 int err;
129 /*
130 * Optional new length
131 */
Simon Glass0bfc4cc2013-04-20 08:42:44 +0000132 len = simple_strtoul(argv[1], NULL, 16);
133 if (len < fdt_totalsize(blob)) {
Gerald Van Barene596a162007-05-16 22:39:59 -0400134 printf ("New length %d < existing length %d, "
135 "ignoring.\n",
Simon Glass0bfc4cc2013-04-20 08:42:44 +0000136 len, fdt_totalsize(blob));
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400137 } else {
138 /*
139 * Open in place with a new length.
140 */
Simon Glass0bfc4cc2013-04-20 08:42:44 +0000141 err = fdt_open_into(blob, blob, len);
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400142 if (err != 0) {
Gerald Van Barene596a162007-05-16 22:39:59 -0400143 printf ("libfdt fdt_open_into(): %s\n",
144 fdt_strerror(err));
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400145 }
146 }
147 }
148
Marek Vasutaeccfee2012-09-05 08:34:44 +0200149 return CMD_RET_SUCCESS;
150 }
151
152 if (!working_fdt) {
153 puts(
154 "No FDT memory address configured. Please configure\n"
155 "the FDT address via \"fdt addr <address>\" command.\n"
156 "Aborting!\n");
157 return CMD_RET_FAILURE;
158 }
159
Wolfgang Denk3b683112010-07-17 01:06:04 +0200160 /*
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500161 * Move the working_fdt
Wolfgang Denk3b683112010-07-17 01:06:04 +0200162 */
Marek Vasutaeccfee2012-09-05 08:34:44 +0200163 if (strncmp(argv[1], "mo", 2) == 0) {
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400164 struct fdt_header *newaddr;
165 int len;
166 int err;
167
Wolfgang Denk3b683112010-07-17 01:06:04 +0200168 if (argc < 4)
Simon Glassa06dfc72011-12-10 08:44:01 +0000169 return CMD_RET_USAGE;
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400170
171 /*
172 * Set the address and length of the fdt.
173 */
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500174 working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
Simon Glass546b9a32013-04-20 08:42:42 +0000175 if (!fdt_valid(&working_fdt))
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400176 return 1;
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400177
Gerald Van Barene596a162007-05-16 22:39:59 -0400178 newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
Gerald Van Baren4d223922007-04-25 22:47:15 -0400179
180 /*
181 * If the user specifies a length, use that. Otherwise use the
182 * current length.
183 */
184 if (argc <= 4) {
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500185 len = fdt_totalsize(working_fdt);
Gerald Van Baren4d223922007-04-25 22:47:15 -0400186 } else {
187 len = simple_strtoul(argv[4], NULL, 16);
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500188 if (len < fdt_totalsize(working_fdt)) {
Gerald Van Barene596a162007-05-16 22:39:59 -0400189 printf ("New length 0x%X < existing length "
190 "0x%X, aborting.\n",
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500191 len, fdt_totalsize(working_fdt));
Gerald Van Baren4d223922007-04-25 22:47:15 -0400192 return 1;
193 }
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400194 }
195
196 /*
197 * Copy to the new location.
198 */
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500199 err = fdt_open_into(working_fdt, newaddr, len);
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400200 if (err != 0) {
Gerald Van Barene596a162007-05-16 22:39:59 -0400201 printf ("libfdt fdt_open_into(): %s\n",
202 fdt_strerror(err));
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400203 return 1;
204 }
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500205 working_fdt = newaddr;
Fabien Parenta0559ac2016-11-24 15:02:18 +0100206#ifdef CONFIG_OF_SYSTEM_SETUP
207 /* Call the board-specific fixup routine */
208 } else if (strncmp(argv[1], "sys", 3) == 0) {
209 int err = ft_system_setup(working_fdt, gd->bd);
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400210
Fabien Parenta0559ac2016-11-24 15:02:18 +0100211 if (err) {
212 printf("Failed to add system information to FDT: %s\n",
213 fdt_strerror(err));
214 return CMD_RET_FAILURE;
215 }
216#endif
Wolfgang Denk3b683112010-07-17 01:06:04 +0200217 /*
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400218 * Make a new node
Wolfgang Denk3b683112010-07-17 01:06:04 +0200219 */
Gerald Van Baren3b9d6292008-06-09 21:02:17 -0400220 } else if (strncmp(argv[1], "mk", 2) == 0) {
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400221 char *pathp; /* path */
222 char *nodep; /* new node to add */
223 int nodeoffset; /* node offset from libfdt */
224 int err;
225
226 /*
227 * Parameters: Node path, new node to be appended to the path.
228 */
Wolfgang Denk3b683112010-07-17 01:06:04 +0200229 if (argc < 4)
Simon Glassa06dfc72011-12-10 08:44:01 +0000230 return CMD_RET_USAGE;
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400231
232 pathp = argv[2];
233 nodep = argv[3];
234
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500235 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400236 if (nodeoffset < 0) {
237 /*
238 * Not found or something else bad happened.
239 */
Kumar Galac8ab7052007-10-24 11:04:22 -0500240 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren1178d6a2007-05-21 23:27:16 -0400241 fdt_strerror(nodeoffset));
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400242 return 1;
243 }
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500244 err = fdt_add_subnode(working_fdt, nodeoffset, nodep);
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400245 if (err < 0) {
Gerald Van Barene596a162007-05-16 22:39:59 -0400246 printf ("libfdt fdt_add_subnode(): %s\n",
247 fdt_strerror(err));
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400248 return 1;
249 }
250
Wolfgang Denk3b683112010-07-17 01:06:04 +0200251 /*
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500252 * Set the value of a property in the working_fdt.
Wolfgang Denk3b683112010-07-17 01:06:04 +0200253 */
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400254 } else if (argv[1][0] == 's') {
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400255 char *pathp; /* path */
Gerald Van Barene596a162007-05-16 22:39:59 -0400256 char *prop; /* property */
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400257 int nodeoffset; /* node offset from libfdt */
Bernhard Messerklinger9b2664f2017-09-28 11:29:52 +0200258 static char data[SCRATCHPAD] __aligned(4);/* property storage */
Hannes Schmelzer98788612017-05-30 15:05:44 +0200259 const void *ptmp;
Gerald Van Barene596a162007-05-16 22:39:59 -0400260 int len; /* new length of the property */
261 int ret; /* return value */
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400262
263 /*
Gerald Van Barend91383a2008-01-05 14:52:04 -0500264 * Parameters: Node path, property, optional value.
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400265 */
Wolfgang Denk3b683112010-07-17 01:06:04 +0200266 if (argc < 4)
Simon Glassa06dfc72011-12-10 08:44:01 +0000267 return CMD_RET_USAGE;
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400268
269 pathp = argv[2];
270 prop = argv[3];
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400271
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500272 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400273 if (nodeoffset < 0) {
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400274 /*
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400275 * Not found or something else bad happened.
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400276 */
Kumar Galac8ab7052007-10-24 11:04:22 -0500277 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren1178d6a2007-05-21 23:27:16 -0400278 fdt_strerror(nodeoffset));
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400279 return 1;
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400280 }
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400281
Hannes Schmelzer98788612017-05-30 15:05:44 +0200282 if (argc == 4) {
283 len = 0;
284 } else {
285 ptmp = fdt_getprop(working_fdt, nodeoffset, prop, &len);
286 if (len > SCRATCHPAD) {
287 printf("prop (%d) doesn't fit in scratchpad!\n",
288 len);
289 return 1;
290 }
Hannes Schmelzera99c0522017-08-18 14:41:14 +0200291 if (ptmp != NULL)
292 memcpy(data, ptmp, len);
293
Hannes Schmelzer98788612017-05-30 15:05:44 +0200294 ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
295 if (ret != 0)
296 return ret;
297 }
298
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500299 ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400300 if (ret < 0) {
301 printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
302 return 1;
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400303 }
304
Joe Hershbergerfc5abf02012-08-17 10:34:37 +0000305 /********************************************************************
306 * Get the value of a property in the working_fdt.
307 ********************************************************************/
308 } else if (argv[1][0] == 'g') {
309 char *subcmd; /* sub-command */
310 char *pathp; /* path */
311 char *prop; /* property */
312 char *var; /* variable to store result */
313 int nodeoffset; /* node offset from libfdt */
314 const void *nodep; /* property node pointer */
315 int len = 0; /* new length of the property */
316
317 /*
318 * Parameters: Node path, property, optional value.
319 */
320 if (argc < 5)
321 return CMD_RET_USAGE;
322
323 subcmd = argv[2];
324
325 if (argc < 6 && subcmd[0] != 's')
326 return CMD_RET_USAGE;
327
328 var = argv[3];
329 pathp = argv[4];
330 prop = argv[5];
331
332 nodeoffset = fdt_path_offset(working_fdt, pathp);
333 if (nodeoffset < 0) {
334 /*
335 * Not found or something else bad happened.
336 */
337 printf("libfdt fdt_path_offset() returned %s\n",
338 fdt_strerror(nodeoffset));
339 return 1;
340 }
341
342 if (subcmd[0] == 'n' || (subcmd[0] == 's' && argc == 5)) {
343 int reqIndex = -1;
344 int startDepth = fdt_node_depth(
345 working_fdt, nodeoffset);
346 int curDepth = startDepth;
347 int curIndex = -1;
348 int nextNodeOffset = fdt_next_node(
349 working_fdt, nodeoffset, &curDepth);
350
351 if (subcmd[0] == 'n')
352 reqIndex = simple_strtoul(argv[5], NULL, 16);
353
354 while (curDepth > startDepth) {
355 if (curDepth == startDepth + 1)
356 curIndex++;
357 if (subcmd[0] == 'n' && curIndex == reqIndex) {
Simon Glass6a38e412017-08-03 12:22:09 -0600358 const char *node_name;
Joe Hershbergerfc5abf02012-08-17 10:34:37 +0000359
Simon Glass6a38e412017-08-03 12:22:09 -0600360 node_name = fdt_get_name(working_fdt,
361 nextNodeOffset,
362 NULL);
363 env_set(var, node_name);
Joe Hershbergerfc5abf02012-08-17 10:34:37 +0000364 return 0;
365 }
366 nextNodeOffset = fdt_next_node(
367 working_fdt, nextNodeOffset, &curDepth);
368 if (nextNodeOffset < 0)
369 break;
370 }
371 if (subcmd[0] == 's') {
372 /* get the num nodes at this level */
Simon Glass4d949a22017-08-03 12:22:10 -0600373 env_set_ulong(var, curIndex + 1);
Joe Hershbergerfc5abf02012-08-17 10:34:37 +0000374 } else {
375 /* node index not found */
376 printf("libfdt node not found\n");
377 return 1;
378 }
379 } else {
380 nodep = fdt_getprop(
381 working_fdt, nodeoffset, prop, &len);
382 if (len == 0) {
383 /* no property value */
Simon Glass6a38e412017-08-03 12:22:09 -0600384 env_set(var, "");
Joe Hershbergerfc5abf02012-08-17 10:34:37 +0000385 return 0;
Simon Glass03746912017-06-07 10:28:41 -0600386 } else if (nodep && len > 0) {
Joe Hershbergerfc5abf02012-08-17 10:34:37 +0000387 if (subcmd[0] == 'v') {
388 int ret;
389
Simon Glass6a38e412017-08-03 12:22:09 -0600390 ret = fdt_value_env_set(nodep, len,
391 var);
Joe Hershbergerfc5abf02012-08-17 10:34:37 +0000392 if (ret != 0)
393 return ret;
394 } else if (subcmd[0] == 'a') {
395 /* Get address */
396 char buf[11];
397
Tom Rini1db8b532012-10-29 14:53:18 +0000398 sprintf(buf, "0x%p", nodep);
Simon Glass6a38e412017-08-03 12:22:09 -0600399 env_set(var, buf);
Joe Hershbergerfc5abf02012-08-17 10:34:37 +0000400 } else if (subcmd[0] == 's') {
401 /* Get size */
402 char buf[11];
403
404 sprintf(buf, "0x%08X", len);
Simon Glass6a38e412017-08-03 12:22:09 -0600405 env_set(var, buf);
Joe Hershbergerfc5abf02012-08-17 10:34:37 +0000406 } else
407 return CMD_RET_USAGE;
408 return 0;
409 } else {
410 printf("libfdt fdt_getprop(): %s\n",
411 fdt_strerror(len));
412 return 1;
413 }
414 }
415
Wolfgang Denk3b683112010-07-17 01:06:04 +0200416 /*
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400417 * Print (recursive) / List (single level)
Wolfgang Denk3b683112010-07-17 01:06:04 +0200418 */
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400419 } else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400420 int depth = MAX_LEVEL; /* how deep to print */
421 char *pathp; /* path */
Gerald Van Barene596a162007-05-16 22:39:59 -0400422 char *prop; /* property */
423 int ret; /* return value */
Kumar Gala51ab7f92007-10-25 16:15:07 -0500424 static char root[2] = "/";
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400425
426 /*
427 * list is an alias for print, but limited to 1 level
428 */
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400429 if (argv[1][0] == 'l') {
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400430 depth = 1;
431 }
432
433 /*
434 * Get the starting path. The root node is an oddball,
435 * the offset is zero and has no name.
436 */
Kumar Gala51ab7f92007-10-25 16:15:07 -0500437 if (argc == 2)
438 pathp = root;
439 else
440 pathp = argv[2];
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400441 if (argc > 3)
442 prop = argv[3];
443 else
444 prop = NULL;
445
Gerald Van Barene596a162007-05-16 22:39:59 -0400446 ret = fdt_print(pathp, prop, depth);
447 if (ret != 0)
448 return ret;
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400449
Wolfgang Denk3b683112010-07-17 01:06:04 +0200450 /*
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400451 * Remove a property/node
Wolfgang Denk3b683112010-07-17 01:06:04 +0200452 */
Gerald Van Baren3b9d6292008-06-09 21:02:17 -0400453 } else if (strncmp(argv[1], "rm", 2) == 0) {
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400454 int nodeoffset; /* node offset from libfdt */
455 int err;
456
457 /*
458 * Get the path. The root node is an oddball, the offset
459 * is zero and has no name.
460 */
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500461 nodeoffset = fdt_path_offset (working_fdt, argv[2]);
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400462 if (nodeoffset < 0) {
463 /*
464 * Not found or something else bad happened.
465 */
Kumar Galac8ab7052007-10-24 11:04:22 -0500466 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren1178d6a2007-05-21 23:27:16 -0400467 fdt_strerror(nodeoffset));
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400468 return 1;
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400469 }
470 /*
471 * Do the delete. A fourth parameter means delete a property,
472 * otherwise delete the node.
473 */
474 if (argc > 3) {
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500475 err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400476 if (err < 0) {
Gerald Van Barene596a162007-05-16 22:39:59 -0400477 printf("libfdt fdt_delprop(): %s\n",
478 fdt_strerror(err));
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400479 return err;
480 }
481 } else {
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500482 err = fdt_del_node(working_fdt, nodeoffset);
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400483 if (err < 0) {
Gerald Van Barene596a162007-05-16 22:39:59 -0400484 printf("libfdt fdt_del_node(): %s\n",
485 fdt_strerror(err));
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400486 return err;
487 }
488 }
Kumar Galab79da7b2008-02-15 03:34:36 -0600489
Wolfgang Denk3b683112010-07-17 01:06:04 +0200490 /*
Kumar Galab79da7b2008-02-15 03:34:36 -0600491 * Display header info
Wolfgang Denk3b683112010-07-17 01:06:04 +0200492 */
Kumar Galab79da7b2008-02-15 03:34:36 -0600493 } else if (argv[1][0] == 'h') {
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500494 u32 version = fdt_version(working_fdt);
495 printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
496 printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
497 fdt_totalsize(working_fdt));
498 printf("off_dt_struct:\t\t0x%x\n",
499 fdt_off_dt_struct(working_fdt));
500 printf("off_dt_strings:\t\t0x%x\n",
501 fdt_off_dt_strings(working_fdt));
502 printf("off_mem_rsvmap:\t\t0x%x\n",
503 fdt_off_mem_rsvmap(working_fdt));
Kumar Galab79da7b2008-02-15 03:34:36 -0600504 printf("version:\t\t%d\n", version);
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500505 printf("last_comp_version:\t%d\n",
506 fdt_last_comp_version(working_fdt));
Kumar Galab79da7b2008-02-15 03:34:36 -0600507 if (version >= 2)
508 printf("boot_cpuid_phys:\t0x%x\n",
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500509 fdt_boot_cpuid_phys(working_fdt));
Kumar Galab79da7b2008-02-15 03:34:36 -0600510 if (version >= 3)
511 printf("size_dt_strings:\t0x%x\n",
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500512 fdt_size_dt_strings(working_fdt));
Kumar Galab79da7b2008-02-15 03:34:36 -0600513 if (version >= 17)
514 printf("size_dt_struct:\t\t0x%x\n",
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500515 fdt_size_dt_struct(working_fdt));
516 printf("number mem_rsv:\t\t0x%x\n",
517 fdt_num_mem_rsv(working_fdt));
Kumar Galab79da7b2008-02-15 03:34:36 -0600518 printf("\n");
519
Wolfgang Denk3b683112010-07-17 01:06:04 +0200520 /*
Kumar Galab79da7b2008-02-15 03:34:36 -0600521 * Set boot cpu id
Wolfgang Denk3b683112010-07-17 01:06:04 +0200522 */
Gerald Van Baren3b9d6292008-06-09 21:02:17 -0400523 } else if (strncmp(argv[1], "boo", 3) == 0) {
Kumar Galab79da7b2008-02-15 03:34:36 -0600524 unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500525 fdt_set_boot_cpuid_phys(working_fdt, tmp);
Kumar Galab79da7b2008-02-15 03:34:36 -0600526
Wolfgang Denk3b683112010-07-17 01:06:04 +0200527 /*
Kumar Galab79da7b2008-02-15 03:34:36 -0600528 * memory command
Wolfgang Denk3b683112010-07-17 01:06:04 +0200529 */
Gerald Van Baren3b9d6292008-06-09 21:02:17 -0400530 } else if (strncmp(argv[1], "me", 2) == 0) {
Kumar Galab79da7b2008-02-15 03:34:36 -0600531 uint64_t addr, size;
532 int err;
Heiko Schocher0f602e12009-12-03 11:21:21 +0100533 addr = simple_strtoull(argv[2], NULL, 16);
534 size = simple_strtoull(argv[3], NULL, 16);
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500535 err = fdt_fixup_memory(working_fdt, addr, size);
Kumar Galab79da7b2008-02-15 03:34:36 -0600536 if (err < 0)
537 return err;
538
Wolfgang Denk3b683112010-07-17 01:06:04 +0200539 /*
Kumar Galab79da7b2008-02-15 03:34:36 -0600540 * mem reserve commands
Wolfgang Denk3b683112010-07-17 01:06:04 +0200541 */
Gerald Van Baren3b9d6292008-06-09 21:02:17 -0400542 } else if (strncmp(argv[1], "rs", 2) == 0) {
Kumar Galab79da7b2008-02-15 03:34:36 -0600543 if (argv[2][0] == 'p') {
544 uint64_t addr, size;
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500545 int total = fdt_num_mem_rsv(working_fdt);
Kumar Galab79da7b2008-02-15 03:34:36 -0600546 int j, err;
547 printf("index\t\t start\t\t size\n");
548 printf("-------------------------------"
549 "-----------------\n");
550 for (j = 0; j < total; j++) {
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500551 err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
Kumar Galab79da7b2008-02-15 03:34:36 -0600552 if (err < 0) {
553 printf("libfdt fdt_get_mem_rsv(): %s\n",
554 fdt_strerror(err));
555 return err;
556 }
557 printf(" %x\t%08x%08x\t%08x%08x\n", j,
558 (u32)(addr >> 32),
559 (u32)(addr & 0xffffffff),
560 (u32)(size >> 32),
561 (u32)(size & 0xffffffff));
562 }
563 } else if (argv[2][0] == 'a') {
564 uint64_t addr, size;
565 int err;
Kumar Galab79da7b2008-02-15 03:34:36 -0600566 addr = simple_strtoull(argv[3], NULL, 16);
567 size = simple_strtoull(argv[4], NULL, 16);
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500568 err = fdt_add_mem_rsv(working_fdt, addr, size);
Kumar Galab79da7b2008-02-15 03:34:36 -0600569
570 if (err < 0) {
571 printf("libfdt fdt_add_mem_rsv(): %s\n",
572 fdt_strerror(err));
573 return err;
574 }
575 } else if (argv[2][0] == 'd') {
576 unsigned long idx = simple_strtoul(argv[3], NULL, 16);
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500577 int err = fdt_del_mem_rsv(working_fdt, idx);
Kumar Galab79da7b2008-02-15 03:34:36 -0600578
579 if (err < 0) {
580 printf("libfdt fdt_del_mem_rsv(): %s\n",
581 fdt_strerror(err));
582 return err;
583 }
584 } else {
585 /* Unrecognized command */
Simon Glassa06dfc72011-12-10 08:44:01 +0000586 return CMD_RET_USAGE;
Kumar Galab79da7b2008-02-15 03:34:36 -0600587 }
Kim Phillipsbd9d1152007-07-17 13:57:04 -0500588 }
Gerald Van Baren5606a362007-06-25 23:25:28 -0400589#ifdef CONFIG_OF_BOARD_SETUP
Kim Phillipsbd9d1152007-07-17 13:57:04 -0500590 /* Call the board-specific fixup routine */
Simon Glass406ba622014-10-23 18:58:48 -0600591 else if (strncmp(argv[1], "boa", 3) == 0) {
592 int err = ft_board_setup(working_fdt, gd->bd);
593
594 if (err) {
595 printf("Failed to update board information in FDT: %s\n",
596 fdt_strerror(err));
597 return CMD_RET_FAILURE;
598 }
Nicholas Faustinie5fb7862018-10-03 12:58:48 +0200599#ifdef CONFIG_SOC_KEYSTONE
600 ft_board_setup_ex(working_fdt, gd->bd);
601#endif
Simon Glass406ba622014-10-23 18:58:48 -0600602 }
Gerald Van Baren5606a362007-06-25 23:25:28 -0400603#endif
Kim Phillipsbd9d1152007-07-17 13:57:04 -0500604 /* Create a chosen node */
Heiko Schocherfce16b92014-03-03 12:19:24 +0100605 else if (strncmp(argv[1], "cho", 3) == 0) {
Kumar Galafb5dcd52008-08-15 08:24:34 -0500606 unsigned long initrd_start = 0, initrd_end = 0;
607
Wolfgang Denk3b683112010-07-17 01:06:04 +0200608 if ((argc != 2) && (argc != 4))
Simon Glassa06dfc72011-12-10 08:44:01 +0000609 return CMD_RET_USAGE;
Kumar Galafb5dcd52008-08-15 08:24:34 -0500610
611 if (argc == 4) {
612 initrd_start = simple_strtoul(argv[2], NULL, 16);
613 initrd_end = simple_strtoul(argv[3], NULL, 16);
614 }
615
Masahiro Yamada451c2042014-04-18 17:41:00 +0900616 fdt_chosen(working_fdt);
Masahiro Yamada5b114892014-04-18 17:40:59 +0900617 fdt_initrd(working_fdt, initrd_start, initrd_end);
Heiko Schocherfce16b92014-03-03 12:19:24 +0100618
619#if defined(CONFIG_FIT_SIGNATURE)
620 } else if (strncmp(argv[1], "che", 3) == 0) {
621 int cfg_noffset;
622 int ret;
623 unsigned long addr;
624 struct fdt_header *blob;
625
626 if (!working_fdt)
627 return CMD_RET_FAILURE;
628
629 if (argc > 2) {
630 addr = simple_strtoul(argv[2], NULL, 16);
631 blob = map_sysmem(addr, 0);
632 } else {
633 blob = (struct fdt_header *)gd->fdt_blob;
634 }
635 if (!fdt_valid(&blob))
636 return 1;
637
638 gd->fdt_blob = blob;
639 cfg_noffset = fit_conf_get_node(working_fdt, NULL);
640 if (!cfg_noffset) {
641 printf("Could not find configuration node: %s\n",
642 fdt_strerror(cfg_noffset));
643 return CMD_RET_FAILURE;
644 }
645
646 ret = fit_config_verify(working_fdt, cfg_noffset);
Simon Glass5da42d92014-06-12 07:24:45 -0600647 if (ret == 0)
Heiko Schocherfce16b92014-03-03 12:19:24 +0100648 return CMD_RET_SUCCESS;
649 else
650 return CMD_RET_FAILURE;
651#endif
652
Kumar Gala58911df2008-08-15 08:24:44 -0500653 }
Maxime Ripard5a680aa2016-07-05 10:26:45 +0200654#ifdef CONFIG_OF_LIBFDT_OVERLAY
655 /* apply an overlay */
656 else if (strncmp(argv[1], "ap", 2) == 0) {
657 unsigned long addr;
658 struct fdt_header *blob;
Stefan Agnerfed14d02016-12-20 15:58:45 +0100659 int ret;
Maxime Ripard5a680aa2016-07-05 10:26:45 +0200660
661 if (argc != 3)
662 return CMD_RET_USAGE;
663
664 if (!working_fdt)
665 return CMD_RET_FAILURE;
666
667 addr = simple_strtoul(argv[2], NULL, 16);
668 blob = map_sysmem(addr, 0);
669 if (!fdt_valid(&blob))
670 return CMD_RET_FAILURE;
671
Pantelis Antonioud9456a42017-09-04 23:12:12 +0300672 /* apply method prints messages on error */
673 ret = fdt_overlay_apply_verbose(working_fdt, blob);
674 if (ret)
Maxime Ripard5a680aa2016-07-05 10:26:45 +0200675 return CMD_RET_FAILURE;
676 }
677#endif
Kumar Gala58911df2008-08-15 08:24:44 -0500678 /* resize the fdt */
679 else if (strncmp(argv[1], "re", 2) == 0) {
Hannes Schmelzerd3dbac82016-09-20 18:10:43 +0200680 uint extrasize;
681 if (argc > 2)
682 extrasize = simple_strtoul(argv[2], NULL, 16);
683 else
684 extrasize = 0;
685 fdt_shrink_to_minimum(working_fdt, extrasize);
Kumar Gala58911df2008-08-15 08:24:44 -0500686 }
687 else {
Kim Phillipsbd9d1152007-07-17 13:57:04 -0500688 /* Unrecognized command */
Simon Glassa06dfc72011-12-10 08:44:01 +0000689 return CMD_RET_USAGE;
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400690 }
691
692 return 0;
693}
694
Gerald Van Barene596a162007-05-16 22:39:59 -0400695/****************************************************************************/
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400696
Simon Glass546b9a32013-04-20 08:42:42 +0000697/**
698 * fdt_valid() - Check if an FDT is valid. If not, change it to NULL
699 *
700 * @blobp: Pointer to FDT pointer
701 * @return 1 if OK, 0 if bad (in which case *blobp is set to NULL)
702 */
703static int fdt_valid(struct fdt_header **blobp)
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400704{
Simon Glass546b9a32013-04-20 08:42:42 +0000705 const void *blob = *blobp;
706 int err;
Gerald Van Barenc4a57ea2007-04-06 14:19:43 -0400707
Simon Glass546b9a32013-04-20 08:42:42 +0000708 if (blob == NULL) {
Gerald Van Barenc4a57ea2007-04-06 14:19:43 -0400709 printf ("The address of the fdt is invalid (NULL).\n");
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400710 return 0;
711 }
Gerald Van Barenc4a57ea2007-04-06 14:19:43 -0400712
Simon Glass546b9a32013-04-20 08:42:42 +0000713 err = fdt_check_header(blob);
Gerald Van Barenc4a57ea2007-04-06 14:19:43 -0400714 if (err == 0)
715 return 1; /* valid */
716
717 if (err < 0) {
Gerald Van Baren0ea55d22007-05-12 09:47:25 -0400718 printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
Gerald Van Barenc4a57ea2007-04-06 14:19:43 -0400719 /*
720 * Be more informative on bad version.
721 */
722 if (err == -FDT_ERR_BADVERSION) {
Simon Glass546b9a32013-04-20 08:42:42 +0000723 if (fdt_version(blob) <
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500724 FDT_FIRST_SUPPORTED_VERSION) {
Andrew Klossnere4ad4542008-07-07 06:41:14 -0700725 printf (" - too old, fdt %d < %d",
Simon Glass546b9a32013-04-20 08:42:42 +0000726 fdt_version(blob),
Gerald Van Barene596a162007-05-16 22:39:59 -0400727 FDT_FIRST_SUPPORTED_VERSION);
Gerald Van Barenc4a57ea2007-04-06 14:19:43 -0400728 }
Simon Glass546b9a32013-04-20 08:42:42 +0000729 if (fdt_last_comp_version(blob) >
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500730 FDT_LAST_SUPPORTED_VERSION) {
Andrew Klossnere4ad4542008-07-07 06:41:14 -0700731 printf (" - too new, fdt %d > %d",
Simon Glass546b9a32013-04-20 08:42:42 +0000732 fdt_version(blob),
Gerald Van Barene596a162007-05-16 22:39:59 -0400733 FDT_LAST_SUPPORTED_VERSION);
Gerald Van Barenc4a57ea2007-04-06 14:19:43 -0400734 }
Gerald Van Barenc4a57ea2007-04-06 14:19:43 -0400735 }
736 printf("\n");
Simon Glass546b9a32013-04-20 08:42:42 +0000737 *blobp = NULL;
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400738 return 0;
739 }
740 return 1;
741}
742
Gerald Van Barene596a162007-05-16 22:39:59 -0400743/****************************************************************************/
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400744
745/*
Gerald Van Barene596a162007-05-16 22:39:59 -0400746 * Parse the user's input, partially heuristic. Valid formats:
Andy Fleming46891472008-03-31 20:45:56 -0500747 * <0x00112233 4 05> - an array of cells. Numbers follow standard
Wolfgang Denka1be4762008-05-20 16:00:29 +0200748 * C conventions.
Gerald Van Barene596a162007-05-16 22:39:59 -0400749 * [00 11 22 .. nn] - byte stream
750 * "string" - If the the value doesn't start with "<" or "[", it is
751 * treated as a string. Note that the quotes are
752 * stripped by the parser before we get the string.
Andy Fleming46891472008-03-31 20:45:56 -0500753 * newval: An array of strings containing the new property as specified
Wolfgang Denka1be4762008-05-20 16:00:29 +0200754 * on the command line
Andy Fleming46891472008-03-31 20:45:56 -0500755 * count: The number of strings in the array
756 * data: A bytestream to be placed in the property
757 * len: The length of the resulting bytestream
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400758 */
Wolfgang Denk6262d0212010-06-28 22:00:46 +0200759static int fdt_parse_prop(char * const *newval, int count, char *data, int *len)
Gerald Van Barene596a162007-05-16 22:39:59 -0400760{
761 char *cp; /* temporary char pointer */
Andy Fleming46891472008-03-31 20:45:56 -0500762 char *newp; /* temporary newval char pointer */
Gerald Van Barene596a162007-05-16 22:39:59 -0400763 unsigned long tmp; /* holds converted values */
Andy Fleming46891472008-03-31 20:45:56 -0500764 int stridx = 0;
Gerald Van Barene596a162007-05-16 22:39:59 -0400765
Andy Fleming46891472008-03-31 20:45:56 -0500766 *len = 0;
767 newp = newval[0];
768
769 /* An array of cells */
770 if (*newp == '<') {
771 newp++;
772 while ((*newp != '>') && (stridx < count)) {
773 /*
774 * Keep searching until we find that last ">"
775 * That way users don't have to escape the spaces
776 */
777 if (*newp == '\0') {
778 newp = newval[++stridx];
779 continue;
780 }
781
782 cp = newp;
783 tmp = simple_strtoul(cp, &newp, 0);
Hannes Schmelzer98788612017-05-30 15:05:44 +0200784 if (*cp != '?')
785 *(fdt32_t *)data = cpu_to_fdt32(tmp);
786 else
787 newp++;
788
Andy Fleming46891472008-03-31 20:45:56 -0500789 data += 4;
790 *len += 4;
791
792 /* If the ptr didn't advance, something went wrong */
793 if ((newp - cp) <= 0) {
Gerald Van Barene596a162007-05-16 22:39:59 -0400794 printf("Sorry, I could not convert \"%s\"\n",
795 cp);
796 return 1;
797 }
Andy Fleming46891472008-03-31 20:45:56 -0500798
799 while (*newp == ' ')
800 newp++;
Gerald Van Barene596a162007-05-16 22:39:59 -0400801 }
Andy Fleming46891472008-03-31 20:45:56 -0500802
803 if (*newp != '>') {
804 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barene596a162007-05-16 22:39:59 -0400805 return 1;
806 }
Andy Fleming46891472008-03-31 20:45:56 -0500807 } else if (*newp == '[') {
Gerald Van Barene596a162007-05-16 22:39:59 -0400808 /*
809 * Byte stream. Convert the values.
810 */
Andy Fleming46891472008-03-31 20:45:56 -0500811 newp++;
Ken MacLeodd028afa2009-09-11 15:16:18 -0500812 while ((stridx < count) && (*newp != ']')) {
Andy Fleming46891472008-03-31 20:45:56 -0500813 while (*newp == ' ')
814 newp++;
Ken MacLeodd028afa2009-09-11 15:16:18 -0500815 if (*newp == '\0') {
Andy Fleming46891472008-03-31 20:45:56 -0500816 newp = newval[++stridx];
Ken MacLeodd028afa2009-09-11 15:16:18 -0500817 continue;
818 }
819 if (!isxdigit(*newp))
820 break;
821 tmp = simple_strtoul(newp, &newp, 16);
822 *data++ = tmp & 0xFF;
823 *len = *len + 1;
Gerald Van Barene596a162007-05-16 22:39:59 -0400824 }
Andy Fleming46891472008-03-31 20:45:56 -0500825 if (*newp != ']') {
Andrew Klossnere4ad4542008-07-07 06:41:14 -0700826 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barene596a162007-05-16 22:39:59 -0400827 return 1;
828 }
829 } else {
830 /*
Ken MacLeodd028afa2009-09-11 15:16:18 -0500831 * Assume it is one or more strings. Copy it into our
832 * data area for convenience (including the
833 * terminating '\0's).
Gerald Van Barene596a162007-05-16 22:39:59 -0400834 */
Andy Fleming46891472008-03-31 20:45:56 -0500835 while (stridx < count) {
Ken MacLeodd028afa2009-09-11 15:16:18 -0500836 size_t length = strlen(newp) + 1;
Andy Fleming46891472008-03-31 20:45:56 -0500837 strcpy(data, newp);
Ken MacLeodd028afa2009-09-11 15:16:18 -0500838 data += length;
839 *len += length;
Andy Fleming46891472008-03-31 20:45:56 -0500840 newp = newval[++stridx];
841 }
Gerald Van Barene596a162007-05-16 22:39:59 -0400842 }
843 return 0;
844}
845
846/****************************************************************************/
847
848/*
849 * Heuristic to guess if this is a string or concatenated strings.
850 */
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400851
852static int is_printable_string(const void *data, int len)
853{
854 const char *s = data;
855
856 /* zero length is not */
857 if (len == 0)
858 return 0;
859
Joe Hershbergerea2243b2012-08-17 10:34:38 +0000860 /* must terminate with zero or '\n' */
861 if (s[len - 1] != '\0' && s[len - 1] != '\n')
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400862 return 0;
863
864 /* printable or a null byte (concatenated strings) */
Joe Hershbergerea2243b2012-08-17 10:34:38 +0000865 while (((*s == '\0') || isprint(*s) || isspace(*s)) && (len > 0)) {
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400866 /*
867 * If we see a null, there are three possibilities:
868 * 1) If len == 1, it is the end of the string, printable
869 * 2) Next character also a null, not printable.
870 * 3) Next character not a null, continue to check.
871 */
872 if (s[0] == '\0') {
873 if (len == 1)
874 return 1;
875 if (s[1] == '\0')
876 return 0;
877 }
878 s++;
879 len--;
880 }
881
882 /* Not the null termination, or not done yet: not printable */
883 if (*s != '\0' || (len != 0))
884 return 0;
885
886 return 1;
887}
888
Gerald Van Barene596a162007-05-16 22:39:59 -0400889
890/*
891 * Print the property in the best format, a heuristic guess. Print as
892 * a string, concatenated strings, a byte, word, double word, or (if all
893 * else fails) it is printed as a stream of bytes.
894 */
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400895static void print_data(const void *data, int len)
896{
897 int j;
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400898
899 /* no data, don't print */
900 if (len == 0)
901 return;
902
903 /*
904 * It is a string, but it may have multiple strings (embedded '\0's).
905 */
906 if (is_printable_string(data, len)) {
907 puts("\"");
908 j = 0;
909 while (j < len) {
910 if (j > 0)
911 puts("\", \"");
912 puts(data);
913 j += strlen(data) + 1;
914 data += strlen(data) + 1;
915 }
916 puts("\"");
917 return;
918 }
919
Andy Fleming46891472008-03-31 20:45:56 -0500920 if ((len %4) == 0) {
Simon Glassfa6b02f2017-05-17 03:25:19 -0600921 if (len > CMD_FDT_MAX_DUMP)
Tom Rini1db8b532012-10-29 14:53:18 +0000922 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf72c6922012-08-17 10:34:36 +0000923 else {
Kim Phillipsdc00a682012-10-29 13:34:31 +0000924 const __be32 *p;
Andy Fleming46891472008-03-31 20:45:56 -0500925
Joe Hershbergerf72c6922012-08-17 10:34:36 +0000926 printf("<");
927 for (j = 0, p = data; j < len/4; j++)
928 printf("0x%08x%s", fdt32_to_cpu(p[j]),
929 j < (len/4 - 1) ? " " : "");
930 printf(">");
931 }
Andy Fleming46891472008-03-31 20:45:56 -0500932 } else { /* anything else... hexdump */
Simon Glassfa6b02f2017-05-17 03:25:19 -0600933 if (len > CMD_FDT_MAX_DUMP)
Tom Rini1db8b532012-10-29 14:53:18 +0000934 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf72c6922012-08-17 10:34:36 +0000935 else {
936 const u8 *s;
Andy Fleming46891472008-03-31 20:45:56 -0500937
Joe Hershbergerf72c6922012-08-17 10:34:36 +0000938 printf("[");
939 for (j = 0, s = data; j < len; j++)
940 printf("%02x%s", s[j], j < len - 1 ? " " : "");
941 printf("]");
942 }
Gerald Van Barenade8ef42007-03-31 12:22:10 -0400943 }
Gerald Van Barene596a162007-05-16 22:39:59 -0400944}
945
946/****************************************************************************/
947
948/*
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500949 * Recursively print (a portion of) the working_fdt. The depth parameter
Gerald Van Barene596a162007-05-16 22:39:59 -0400950 * determines how deeply nested the fdt is printed.
951 */
Kumar Gala1e386af2007-11-21 14:07:46 -0600952static int fdt_print(const char *pathp, char *prop, int depth)
Gerald Van Barene596a162007-05-16 22:39:59 -0400953{
Gerald Van Barene596a162007-05-16 22:39:59 -0400954 static char tabs[MAX_LEVEL+1] =
955 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
956 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
Kumar Gala1e386af2007-11-21 14:07:46 -0600957 const void *nodep; /* property node pointer */
Gerald Van Barene596a162007-05-16 22:39:59 -0400958 int nodeoffset; /* node offset from libfdt */
959 int nextoffset; /* next node offset from libfdt */
960 uint32_t tag; /* tag */
961 int len; /* length of the property */
962 int level = 0; /* keep track of nesting level */
Gerald Van Bareneb999ee2007-11-22 17:23:23 -0500963 const struct fdt_property *fdt_prop;
Gerald Van Barene596a162007-05-16 22:39:59 -0400964
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500965 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Barene596a162007-05-16 22:39:59 -0400966 if (nodeoffset < 0) {
967 /*
968 * Not found or something else bad happened.
969 */
Kumar Galac8ab7052007-10-24 11:04:22 -0500970 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren1178d6a2007-05-21 23:27:16 -0400971 fdt_strerror(nodeoffset));
Gerald Van Barene596a162007-05-16 22:39:59 -0400972 return 1;
973 }
974 /*
975 * The user passed in a property as well as node path.
976 * Print only the given property and then return.
977 */
978 if (prop) {
Kim Phillipsf3a42e22008-06-10 11:06:17 -0500979 nodep = fdt_getprop (working_fdt, nodeoffset, prop, &len);
Gerald Van Barene596a162007-05-16 22:39:59 -0400980 if (len == 0) {
981 /* no property value */
982 printf("%s %s\n", pathp, prop);
983 return 0;
Simon Glass4bc73ef2017-06-07 10:28:42 -0600984 } else if (nodep && len > 0) {
Gerald Van Barenfc1a1092007-11-23 19:43:20 -0500985 printf("%s = ", prop);
Gerald Van Barene596a162007-05-16 22:39:59 -0400986 print_data (nodep, len);
987 printf("\n");
988 return 0;
989 } else {
990 printf ("libfdt fdt_getprop(): %s\n",
991 fdt_strerror(len));
992 return 1;
993 }
994 }
995
996 /*
997 * The user passed in a node path and no property,
998 * print the node and all subnodes.
999 */
Gerald Van Barene596a162007-05-16 22:39:59 -04001000 while(level >= 0) {
Kim Phillipsf3a42e22008-06-10 11:06:17 -05001001 tag = fdt_next_tag(working_fdt, nodeoffset, &nextoffset);
Gerald Van Barene596a162007-05-16 22:39:59 -04001002 switch(tag) {
1003 case FDT_BEGIN_NODE:
Kim Phillipsf3a42e22008-06-10 11:06:17 -05001004 pathp = fdt_get_name(working_fdt, nodeoffset, NULL);
Gerald Van Bareneb999ee2007-11-22 17:23:23 -05001005 if (level <= depth) {
1006 if (pathp == NULL)
1007 pathp = "/* NULL pointer error */";
1008 if (*pathp == '\0')
1009 pathp = "/"; /* root is nameless */
Gerald Van Barene596a162007-05-16 22:39:59 -04001010 printf("%s%s {\n",
1011 &tabs[MAX_LEVEL - level], pathp);
Gerald Van Bareneb999ee2007-11-22 17:23:23 -05001012 }
Gerald Van Barene596a162007-05-16 22:39:59 -04001013 level++;
Gerald Van Barene596a162007-05-16 22:39:59 -04001014 if (level >= MAX_LEVEL) {
Gerald Van Bareneb999ee2007-11-22 17:23:23 -05001015 printf("Nested too deep, aborting.\n");
Gerald Van Barene596a162007-05-16 22:39:59 -04001016 return 1;
1017 }
1018 break;
1019 case FDT_END_NODE:
1020 level--;
Gerald Van Bareneb999ee2007-11-22 17:23:23 -05001021 if (level <= depth)
Gerald Van Barene596a162007-05-16 22:39:59 -04001022 printf("%s};\n", &tabs[MAX_LEVEL - level]);
1023 if (level == 0) {
1024 level = -1; /* exit the loop */
1025 }
1026 break;
1027 case FDT_PROP:
Kim Phillipsf3a42e22008-06-10 11:06:17 -05001028 fdt_prop = fdt_offset_ptr(working_fdt, nodeoffset,
Gerald Van Bareneb999ee2007-11-22 17:23:23 -05001029 sizeof(*fdt_prop));
Kim Phillipsf3a42e22008-06-10 11:06:17 -05001030 pathp = fdt_string(working_fdt,
Gerald Van Bareneb999ee2007-11-22 17:23:23 -05001031 fdt32_to_cpu(fdt_prop->nameoff));
1032 len = fdt32_to_cpu(fdt_prop->len);
1033 nodep = fdt_prop->data;
Gerald Van Barene596a162007-05-16 22:39:59 -04001034 if (len < 0) {
1035 printf ("libfdt fdt_getprop(): %s\n",
1036 fdt_strerror(len));
1037 return 1;
1038 } else if (len == 0) {
1039 /* the property has no value */
Gerald Van Bareneb999ee2007-11-22 17:23:23 -05001040 if (level <= depth)
Gerald Van Barene596a162007-05-16 22:39:59 -04001041 printf("%s%s;\n",
1042 &tabs[MAX_LEVEL - level],
1043 pathp);
1044 } else {
Gerald Van Bareneb999ee2007-11-22 17:23:23 -05001045 if (level <= depth) {
Gerald Van Barenfc1a1092007-11-23 19:43:20 -05001046 printf("%s%s = ",
Gerald Van Barene596a162007-05-16 22:39:59 -04001047 &tabs[MAX_LEVEL - level],
1048 pathp);
1049 print_data (nodep, len);
1050 printf(";\n");
1051 }
1052 }
1053 break;
1054 case FDT_NOP:
Andrew Klossnere4ad4542008-07-07 06:41:14 -07001055 printf("%s/* NOP */\n", &tabs[MAX_LEVEL - level]);
Gerald Van Barene596a162007-05-16 22:39:59 -04001056 break;
1057 case FDT_END:
1058 return 1;
1059 default:
Gerald Van Bareneb999ee2007-11-22 17:23:23 -05001060 if (level <= depth)
Gerald Van Barene596a162007-05-16 22:39:59 -04001061 printf("Unknown tag 0x%08X\n", tag);
1062 return 1;
1063 }
1064 nodeoffset = nextoffset;
1065 }
1066 return 0;
Gerald Van Barenade8ef42007-03-31 12:22:10 -04001067}
Gerald Van Barenade8ef42007-03-31 12:22:10 -04001068
1069/********************************************************************/
Kim Phillipsdc00a682012-10-29 13:34:31 +00001070#ifdef CONFIG_SYS_LONGHELP
1071static char fdt_help_text[] =
Simon Glass0bfc4cc2013-04-20 08:42:44 +00001072 "addr [-c] <addr> [<length>] - Set the [control] fdt location to <addr>\n"
Maxime Ripard5a680aa2016-07-05 10:26:45 +02001073#ifdef CONFIG_OF_LIBFDT_OVERLAY
1074 "fdt apply <addr> - Apply overlay to the DT\n"
1075#endif
Gerald Van Baren5606a362007-06-25 23:25:28 -04001076#ifdef CONFIG_OF_BOARD_SETUP
1077 "fdt boardsetup - Do board-specific set up\n"
1078#endif
Simon Glass6c0be912014-10-23 18:58:54 -06001079#ifdef CONFIG_OF_SYSTEM_SETUP
1080 "fdt systemsetup - Do system-specific set up\n"
1081#endif
Gerald Van Baren7655c092008-01-05 15:33:29 -05001082 "fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n"
Hannes Schmelzerd3dbac82016-09-20 18:10:43 +02001083 "fdt resize [<extrasize>] - Resize fdt to size + padding to 4k addr + some optional <extrasize> if needed\n"
Gerald Van Barenade8ef42007-03-31 12:22:10 -04001084 "fdt print <path> [<prop>] - Recursive print starting at <path>\n"
1085 "fdt list <path> [<prop>] - Print one level starting at <path>\n"
Joe Hershbergerfc5abf02012-08-17 10:34:37 +00001086 "fdt get value <var> <path> <prop> - Get <property> and store in <var>\n"
1087 "fdt get name <var> <path> <index> - Get name of node <index> and store in <var>\n"
1088 "fdt get addr <var> <path> <prop> - Get start address of <property> and store in <var>\n"
1089 "fdt get size <var> <path> [<prop>] - Get size of [<property>] or num nodes and store in <var>\n"
Gerald Van Barenade8ef42007-03-31 12:22:10 -04001090 "fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
1091 "fdt mknode <path> <node> - Create a new node after <path>\n"
1092 "fdt rm <path> [<prop>] - Delete the node or <property>\n"
Kumar Galab79da7b2008-02-15 03:34:36 -06001093 "fdt header - Display header info\n"
1094 "fdt bootcpu <id> - Set boot cpuid\n"
1095 "fdt memory <addr> <size> - Add/Update memory node\n"
1096 "fdt rsvmem print - Show current mem reserves\n"
1097 "fdt rsvmem add <addr> <size> - Add a mem reserve\n"
1098 "fdt rsvmem delete <index> - Delete a mem reserves\n"
Kumar Galafb5dcd52008-08-15 08:24:34 -05001099 "fdt chosen [<start> <end>] - Add/update the /chosen branch in the tree\n"
1100 " <start>/<end> - initrd start/end addr\n"
Heiko Schocherfce16b92014-03-03 12:19:24 +01001101#if defined(CONFIG_FIT_SIGNATURE)
1102 "fdt checksign [<addr>] - check FIT signature\n"
1103 " <start> - addr of key blob\n"
1104 " default gd->fdt_blob\n"
1105#endif
Robert P. J. Day8c60f922016-05-04 04:47:31 -04001106 "NOTE: Dereference aliases by omitting the leading '/', "
Kim Phillipsdc00a682012-10-29 13:34:31 +00001107 "e.g. fdt print ethernet0.";
1108#endif
1109
1110U_BOOT_CMD(
1111 fdt, 255, 0, do_fdt,
1112 "flattened device tree utility commands", fdt_help_text
Gerald Van Barenade8ef42007-03-31 12:22:10 -04001113);