blob: 89ab572d8df71d0bb85bbae3ebeb1efbb1243acd [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Gerald Van Baren781e09e2007-03-31 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 Baren781e09e2007-03-31 12:22:10 -04008 */
9
10#include <common.h>
11#include <command.h>
Simon Glassc7694dd2019-08-01 09:46:46 -060012#include <env.h>
Simon Glass4d72caa2020-05-10 11:40:01 -060013#include <image.h>
Gerald Van Baren781e09e2007-03-31 12:22:10 -040014#include <linux/ctype.h>
15#include <linux/types.h>
Gerald Van Baren781e09e2007-03-31 12:22:10 -040016#include <asm/global_data.h>
Masahiro Yamadab08c8c42018-03-05 01:20:11 +090017#include <linux/libfdt.h>
Gerald Van Baren64dbbd42007-04-06 14:19:43 -040018#include <fdt_support.h>
Joe Hershberger0eb25b62015-03-22 17:08:59 -050019#include <mapmem.h>
Simon Glassa92fd652013-04-20 08:42:45 +000020#include <asm/io.h>
Gerald Van Baren781e09e2007-03-31 12:22:10 -040021
22#define MAX_LEVEL 32 /* how deeply nested we will go */
Gerald Van Barenfd61e552007-06-25 23:25:28 -040023#define SCRATCHPAD 1024 /* bytes of scratchpad memory */
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
Heiko Schocher82441272018-11-15 06:06:06 +010077static const char * const fdt_member_table[] = {
78 "magic",
79 "totalsize",
80 "off_dt_struct",
81 "off_dt_strings",
82 "off_mem_rsvmap",
83 "version",
84 "last_comp_version",
85 "boot_cpuid_phys",
86 "size_dt_strings",
87 "size_dt_struct",
88};
89
Simon Glass09140112020-05-10 11:40:03 -060090static int fdt_get_header_value(int argc, char *const argv[])
Heiko Schocher82441272018-11-15 06:06:06 +010091{
92 fdt32_t *fdtp = (fdt32_t *)working_fdt;
93 ulong val;
94 int i;
95
96 if (argv[2][0] != 'g')
97 return CMD_RET_FAILURE;
98
99 for (i = 0; i < ARRAY_SIZE(fdt_member_table); i++) {
100 if (strcmp(fdt_member_table[i], argv[4]))
101 continue;
102
103 val = fdt32_to_cpu(fdtp[i]);
104 env_set_hex(argv[3], val);
105 return CMD_RET_SUCCESS;
106 }
107
108 return CMD_RET_FAILURE;
109}
110
Joe Hershbergerbc802952012-08-17 10:34:37 +0000111/*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400112 * Flattened Device Tree command, see the help for parameter definitions.
113 */
Simon Glass09140112020-05-10 11:40:03 -0600114static int do_fdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400115{
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200116 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000117 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400118
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200119 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400120 * Set the address of the fdt
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200121 */
Maxime Ripardf0ed68e2016-07-05 10:26:34 +0200122 if (strncmp(argv[1], "ad", 2) == 0) {
Kumar Gala54f9c862008-08-15 08:24:39 -0500123 unsigned long addr;
Simon Glass4b578652013-04-20 08:42:44 +0000124 int control = 0;
125 struct fdt_header *blob;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400126 /*
127 * Set the address [and length] of the fdt.
128 */
Simon Glass4b578652013-04-20 08:42:44 +0000129 argc -= 2;
130 argv += 2;
131/* Temporary #ifdef - some archs don't have fdt_blob yet */
132#ifdef CONFIG_OF_CONTROL
133 if (argc && !strcmp(*argv, "-c")) {
134 control = 1;
135 argc--;
136 argv++;
137 }
138#endif
139 if (argc == 0) {
140 if (control)
141 blob = (struct fdt_header *)gd->fdt_blob;
142 else
143 blob = working_fdt;
144 if (!blob || !fdt_valid(&blob))
Kumar Gala7dbc38a2008-08-15 08:24:35 -0500145 return 1;
Simon Glass4b578652013-04-20 08:42:44 +0000146 printf("The address of the fdt is %#08lx\n",
Joe Hershbergerc71a0162015-02-04 21:56:54 -0600147 control ? (ulong)map_to_sysmem(blob) :
Simon Glassbfebc8c2017-08-03 12:22:13 -0600148 env_get_hex("fdtaddr", 0));
Kumar Gala7dbc38a2008-08-15 08:24:35 -0500149 return 0;
150 }
151
Simon Glass4b578652013-04-20 08:42:44 +0000152 addr = simple_strtoul(argv[0], NULL, 16);
Simon Glassa92fd652013-04-20 08:42:45 +0000153 blob = map_sysmem(addr, 0);
Simon Glass4b578652013-04-20 08:42:44 +0000154 if (!fdt_valid(&blob))
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400155 return 1;
Simon Glass4b578652013-04-20 08:42:44 +0000156 if (control)
157 gd->fdt_blob = blob;
158 else
Joe Hershberger90fbee32015-02-04 21:56:53 -0600159 set_working_fdt_addr(addr);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400160
Simon Glass4b578652013-04-20 08:42:44 +0000161 if (argc >= 2) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400162 int len;
163 int err;
164 /*
165 * Optional new length
166 */
Simon Glass4b578652013-04-20 08:42:44 +0000167 len = simple_strtoul(argv[1], NULL, 16);
168 if (len < fdt_totalsize(blob)) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400169 printf ("New length %d < existing length %d, "
170 "ignoring.\n",
Simon Glass4b578652013-04-20 08:42:44 +0000171 len, fdt_totalsize(blob));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400172 } else {
173 /*
174 * Open in place with a new length.
175 */
Simon Glass4b578652013-04-20 08:42:44 +0000176 err = fdt_open_into(blob, blob, len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400177 if (err != 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400178 printf ("libfdt fdt_open_into(): %s\n",
179 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400180 }
181 }
182 }
183
Marek Vasute02c9452012-09-05 08:34:44 +0200184 return CMD_RET_SUCCESS;
185 }
186
187 if (!working_fdt) {
188 puts(
189 "No FDT memory address configured. Please configure\n"
190 "the FDT address via \"fdt addr <address>\" command.\n"
191 "Aborting!\n");
192 return CMD_RET_FAILURE;
193 }
194
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200195 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500196 * Move the working_fdt
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200197 */
Marek Vasute02c9452012-09-05 08:34:44 +0200198 if (strncmp(argv[1], "mo", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400199 struct fdt_header *newaddr;
200 int len;
201 int err;
202
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200203 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000204 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400205
206 /*
207 * Set the address and length of the fdt.
208 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500209 working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
Simon Glassd14da912013-04-20 08:42:42 +0000210 if (!fdt_valid(&working_fdt))
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400211 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400212
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400213 newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400214
215 /*
216 * If the user specifies a length, use that. Otherwise use the
217 * current length.
218 */
219 if (argc <= 4) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500220 len = fdt_totalsize(working_fdt);
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400221 } else {
222 len = simple_strtoul(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500223 if (len < fdt_totalsize(working_fdt)) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400224 printf ("New length 0x%X < existing length "
225 "0x%X, aborting.\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500226 len, fdt_totalsize(working_fdt));
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400227 return 1;
228 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400229 }
230
231 /*
232 * Copy to the new location.
233 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500234 err = fdt_open_into(working_fdt, newaddr, len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400235 if (err != 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400236 printf ("libfdt fdt_open_into(): %s\n",
237 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400238 return 1;
239 }
Hiroyuki Yokoyamab1a7e792018-10-18 20:43:54 +0200240 set_working_fdt_addr((ulong)newaddr);
Fabien Parentf7f191e2016-11-24 15:02:18 +0100241#ifdef CONFIG_OF_SYSTEM_SETUP
242 /* Call the board-specific fixup routine */
243 } else if (strncmp(argv[1], "sys", 3) == 0) {
244 int err = ft_system_setup(working_fdt, gd->bd);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400245
Fabien Parentf7f191e2016-11-24 15:02:18 +0100246 if (err) {
247 printf("Failed to add system information to FDT: %s\n",
248 fdt_strerror(err));
249 return CMD_RET_FAILURE;
250 }
251#endif
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200252 /*
Gerald Van Baren25114032007-05-12 09:47:25 -0400253 * Make a new node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200254 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400255 } else if (strncmp(argv[1], "mk", 2) == 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400256 char *pathp; /* path */
257 char *nodep; /* new node to add */
258 int nodeoffset; /* node offset from libfdt */
259 int err;
260
261 /*
262 * Parameters: Node path, new node to be appended to the path.
263 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200264 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000265 return CMD_RET_USAGE;
Gerald Van Baren25114032007-05-12 09:47:25 -0400266
267 pathp = argv[2];
268 nodep = argv[3];
269
Kim Phillipse489b9c2008-06-10 11:06:17 -0500270 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400271 if (nodeoffset < 0) {
272 /*
273 * Not found or something else bad happened.
274 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500275 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400276 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400277 return 1;
278 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500279 err = fdt_add_subnode(working_fdt, nodeoffset, nodep);
Gerald Van Baren25114032007-05-12 09:47:25 -0400280 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400281 printf ("libfdt fdt_add_subnode(): %s\n",
282 fdt_strerror(err));
Gerald Van Baren25114032007-05-12 09:47:25 -0400283 return 1;
284 }
285
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200286 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500287 * Set the value of a property in the working_fdt.
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200288 */
Tom Warren0688b752020-03-26 15:20:44 -0700289 } else if (strncmp(argv[1], "se", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400290 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400291 char *prop; /* property */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400292 int nodeoffset; /* node offset from libfdt */
Bernhard Messerklinger6dfd65f2017-09-28 11:29:52 +0200293 static char data[SCRATCHPAD] __aligned(4);/* property storage */
Hannes Schmelzer9620d872017-05-30 15:05:44 +0200294 const void *ptmp;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400295 int len; /* new length of the property */
296 int ret; /* return value */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400297
298 /*
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500299 * Parameters: Node path, property, optional value.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400300 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200301 if (argc < 4)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000302 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400303
304 pathp = argv[2];
305 prop = argv[3];
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400306
Kim Phillipse489b9c2008-06-10 11:06:17 -0500307 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400308 if (nodeoffset < 0) {
309 /*
310 * Not found or something else bad happened.
311 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500312 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400313 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400314 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400315 }
Gerald Van Baren25114032007-05-12 09:47:25 -0400316
Hannes Schmelzer9620d872017-05-30 15:05:44 +0200317 if (argc == 4) {
318 len = 0;
319 } else {
320 ptmp = fdt_getprop(working_fdt, nodeoffset, prop, &len);
321 if (len > SCRATCHPAD) {
322 printf("prop (%d) doesn't fit in scratchpad!\n",
323 len);
324 return 1;
325 }
Hannes Schmelzercee8c352017-08-18 14:41:14 +0200326 if (ptmp != NULL)
327 memcpy(data, ptmp, len);
328
Hannes Schmelzer9620d872017-05-30 15:05:44 +0200329 ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
330 if (ret != 0)
331 return ret;
332 }
333
Kim Phillipse489b9c2008-06-10 11:06:17 -0500334 ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
Gerald Van Baren25114032007-05-12 09:47:25 -0400335 if (ret < 0) {
336 printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
337 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400338 }
339
Joe Hershbergerbc802952012-08-17 10:34:37 +0000340 /********************************************************************
341 * Get the value of a property in the working_fdt.
342 ********************************************************************/
343 } else if (argv[1][0] == 'g') {
344 char *subcmd; /* sub-command */
345 char *pathp; /* path */
346 char *prop; /* property */
347 char *var; /* variable to store result */
348 int nodeoffset; /* node offset from libfdt */
349 const void *nodep; /* property node pointer */
350 int len = 0; /* new length of the property */
351
352 /*
353 * Parameters: Node path, property, optional value.
354 */
355 if (argc < 5)
356 return CMD_RET_USAGE;
357
358 subcmd = argv[2];
359
360 if (argc < 6 && subcmd[0] != 's')
361 return CMD_RET_USAGE;
362
363 var = argv[3];
364 pathp = argv[4];
365 prop = argv[5];
366
367 nodeoffset = fdt_path_offset(working_fdt, pathp);
368 if (nodeoffset < 0) {
369 /*
370 * Not found or something else bad happened.
371 */
372 printf("libfdt fdt_path_offset() returned %s\n",
373 fdt_strerror(nodeoffset));
374 return 1;
375 }
376
377 if (subcmd[0] == 'n' || (subcmd[0] == 's' && argc == 5)) {
378 int reqIndex = -1;
379 int startDepth = fdt_node_depth(
380 working_fdt, nodeoffset);
381 int curDepth = startDepth;
382 int curIndex = -1;
383 int nextNodeOffset = fdt_next_node(
384 working_fdt, nodeoffset, &curDepth);
385
386 if (subcmd[0] == 'n')
387 reqIndex = simple_strtoul(argv[5], NULL, 16);
388
389 while (curDepth > startDepth) {
390 if (curDepth == startDepth + 1)
391 curIndex++;
392 if (subcmd[0] == 'n' && curIndex == reqIndex) {
Simon Glass382bee52017-08-03 12:22:09 -0600393 const char *node_name;
Joe Hershbergerbc802952012-08-17 10:34:37 +0000394
Simon Glass382bee52017-08-03 12:22:09 -0600395 node_name = fdt_get_name(working_fdt,
396 nextNodeOffset,
397 NULL);
398 env_set(var, node_name);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000399 return 0;
400 }
401 nextNodeOffset = fdt_next_node(
402 working_fdt, nextNodeOffset, &curDepth);
403 if (nextNodeOffset < 0)
404 break;
405 }
406 if (subcmd[0] == 's') {
407 /* get the num nodes at this level */
Simon Glass018f5302017-08-03 12:22:10 -0600408 env_set_ulong(var, curIndex + 1);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000409 } else {
410 /* node index not found */
411 printf("libfdt node not found\n");
412 return 1;
413 }
414 } else {
415 nodep = fdt_getprop(
416 working_fdt, nodeoffset, prop, &len);
417 if (len == 0) {
418 /* no property value */
Simon Glass382bee52017-08-03 12:22:09 -0600419 env_set(var, "");
Joe Hershbergerbc802952012-08-17 10:34:37 +0000420 return 0;
Simon Glass72c98ed2017-06-07 10:28:41 -0600421 } else if (nodep && len > 0) {
Joe Hershbergerbc802952012-08-17 10:34:37 +0000422 if (subcmd[0] == 'v') {
423 int ret;
424
Simon Glass382bee52017-08-03 12:22:09 -0600425 ret = fdt_value_env_set(nodep, len,
426 var);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000427 if (ret != 0)
428 return ret;
429 } else if (subcmd[0] == 'a') {
430 /* Get address */
431 char buf[11];
432
Tom Rini085b9c32012-10-29 14:53:18 +0000433 sprintf(buf, "0x%p", nodep);
Simon Glass382bee52017-08-03 12:22:09 -0600434 env_set(var, buf);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000435 } else if (subcmd[0] == 's') {
436 /* Get size */
437 char buf[11];
438
439 sprintf(buf, "0x%08X", len);
Simon Glass382bee52017-08-03 12:22:09 -0600440 env_set(var, buf);
Joe Hershbergerbc802952012-08-17 10:34:37 +0000441 } else
442 return CMD_RET_USAGE;
443 return 0;
444 } else {
445 printf("libfdt fdt_getprop(): %s\n",
446 fdt_strerror(len));
447 return 1;
448 }
449 }
450
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200451 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400452 * Print (recursive) / List (single level)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200453 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400454 } else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400455 int depth = MAX_LEVEL; /* how deep to print */
456 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400457 char *prop; /* property */
458 int ret; /* return value */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500459 static char root[2] = "/";
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400460
461 /*
462 * list is an alias for print, but limited to 1 level
463 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400464 if (argv[1][0] == 'l') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400465 depth = 1;
466 }
467
468 /*
469 * Get the starting path. The root node is an oddball,
470 * the offset is zero and has no name.
471 */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500472 if (argc == 2)
473 pathp = root;
474 else
475 pathp = argv[2];
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400476 if (argc > 3)
477 prop = argv[3];
478 else
479 prop = NULL;
480
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400481 ret = fdt_print(pathp, prop, depth);
482 if (ret != 0)
483 return ret;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400484
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200485 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400486 * Remove a property/node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200487 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400488 } else if (strncmp(argv[1], "rm", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400489 int nodeoffset; /* node offset from libfdt */
490 int err;
491
492 /*
493 * Get the path. The root node is an oddball, the offset
494 * is zero and has no name.
495 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500496 nodeoffset = fdt_path_offset (working_fdt, argv[2]);
Gerald Van Baren25114032007-05-12 09:47:25 -0400497 if (nodeoffset < 0) {
498 /*
499 * Not found or something else bad happened.
500 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500501 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400502 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400503 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400504 }
505 /*
506 * Do the delete. A fourth parameter means delete a property,
507 * otherwise delete the node.
508 */
509 if (argc > 3) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500510 err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400511 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400512 printf("libfdt fdt_delprop(): %s\n",
513 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400514 return err;
515 }
516 } else {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500517 err = fdt_del_node(working_fdt, nodeoffset);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400518 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400519 printf("libfdt fdt_del_node(): %s\n",
520 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400521 return err;
522 }
523 }
Kumar Gala804887e2008-02-15 03:34:36 -0600524
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200525 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600526 * Display header info
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200527 */
Kumar Gala804887e2008-02-15 03:34:36 -0600528 } else if (argv[1][0] == 'h') {
Heiko Schocher82441272018-11-15 06:06:06 +0100529 if (argc == 5)
530 return fdt_get_header_value(argc, argv);
531
Kim Phillipse489b9c2008-06-10 11:06:17 -0500532 u32 version = fdt_version(working_fdt);
533 printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
534 printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
535 fdt_totalsize(working_fdt));
536 printf("off_dt_struct:\t\t0x%x\n",
537 fdt_off_dt_struct(working_fdt));
538 printf("off_dt_strings:\t\t0x%x\n",
539 fdt_off_dt_strings(working_fdt));
540 printf("off_mem_rsvmap:\t\t0x%x\n",
541 fdt_off_mem_rsvmap(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600542 printf("version:\t\t%d\n", version);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500543 printf("last_comp_version:\t%d\n",
544 fdt_last_comp_version(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600545 if (version >= 2)
546 printf("boot_cpuid_phys:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500547 fdt_boot_cpuid_phys(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600548 if (version >= 3)
549 printf("size_dt_strings:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500550 fdt_size_dt_strings(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600551 if (version >= 17)
552 printf("size_dt_struct:\t\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500553 fdt_size_dt_struct(working_fdt));
554 printf("number mem_rsv:\t\t0x%x\n",
555 fdt_num_mem_rsv(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600556 printf("\n");
557
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200558 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600559 * Set boot cpu id
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200560 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400561 } else if (strncmp(argv[1], "boo", 3) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600562 unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500563 fdt_set_boot_cpuid_phys(working_fdt, tmp);
Kumar Gala804887e2008-02-15 03:34:36 -0600564
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200565 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600566 * memory command
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200567 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400568 } else if (strncmp(argv[1], "me", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600569 uint64_t addr, size;
570 int err;
Heiko Schocher4b142fe2009-12-03 11:21:21 +0100571 addr = simple_strtoull(argv[2], NULL, 16);
572 size = simple_strtoull(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500573 err = fdt_fixup_memory(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600574 if (err < 0)
575 return err;
576
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200577 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600578 * mem reserve commands
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200579 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400580 } else if (strncmp(argv[1], "rs", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600581 if (argv[2][0] == 'p') {
582 uint64_t addr, size;
Kim Phillipse489b9c2008-06-10 11:06:17 -0500583 int total = fdt_num_mem_rsv(working_fdt);
Kumar Gala804887e2008-02-15 03:34:36 -0600584 int j, err;
585 printf("index\t\t start\t\t size\n");
586 printf("-------------------------------"
587 "-----------------\n");
588 for (j = 0; j < total; j++) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500589 err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
Kumar Gala804887e2008-02-15 03:34:36 -0600590 if (err < 0) {
591 printf("libfdt fdt_get_mem_rsv(): %s\n",
592 fdt_strerror(err));
593 return err;
594 }
595 printf(" %x\t%08x%08x\t%08x%08x\n", j,
596 (u32)(addr >> 32),
597 (u32)(addr & 0xffffffff),
598 (u32)(size >> 32),
599 (u32)(size & 0xffffffff));
600 }
601 } else if (argv[2][0] == 'a') {
602 uint64_t addr, size;
603 int err;
Kumar Gala804887e2008-02-15 03:34:36 -0600604 addr = simple_strtoull(argv[3], NULL, 16);
605 size = simple_strtoull(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500606 err = fdt_add_mem_rsv(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600607
608 if (err < 0) {
609 printf("libfdt fdt_add_mem_rsv(): %s\n",
610 fdt_strerror(err));
611 return err;
612 }
613 } else if (argv[2][0] == 'd') {
614 unsigned long idx = simple_strtoul(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500615 int err = fdt_del_mem_rsv(working_fdt, idx);
Kumar Gala804887e2008-02-15 03:34:36 -0600616
617 if (err < 0) {
618 printf("libfdt fdt_del_mem_rsv(): %s\n",
619 fdt_strerror(err));
620 return err;
621 }
622 } else {
623 /* Unrecognized command */
Simon Glass4c12eeb2011-12-10 08:44:01 +0000624 return CMD_RET_USAGE;
Kumar Gala804887e2008-02-15 03:34:36 -0600625 }
Kim Phillips99dffca2007-07-17 13:57:04 -0500626 }
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400627#ifdef CONFIG_OF_BOARD_SETUP
Kim Phillips99dffca2007-07-17 13:57:04 -0500628 /* Call the board-specific fixup routine */
Simon Glass4ba98dc2014-10-23 18:58:48 -0600629 else if (strncmp(argv[1], "boa", 3) == 0) {
630 int err = ft_board_setup(working_fdt, gd->bd);
631
632 if (err) {
633 printf("Failed to update board information in FDT: %s\n",
634 fdt_strerror(err));
635 return CMD_RET_FAILURE;
636 }
Nicholas Faustini2c76d312018-10-03 12:58:48 +0200637#ifdef CONFIG_SOC_KEYSTONE
638 ft_board_setup_ex(working_fdt, gd->bd);
639#endif
Simon Glass4ba98dc2014-10-23 18:58:48 -0600640 }
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400641#endif
Kim Phillips99dffca2007-07-17 13:57:04 -0500642 /* Create a chosen node */
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100643 else if (strncmp(argv[1], "cho", 3) == 0) {
Kumar Galaf953d992008-08-15 08:24:34 -0500644 unsigned long initrd_start = 0, initrd_end = 0;
645
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200646 if ((argc != 2) && (argc != 4))
Simon Glass4c12eeb2011-12-10 08:44:01 +0000647 return CMD_RET_USAGE;
Kumar Galaf953d992008-08-15 08:24:34 -0500648
649 if (argc == 4) {
650 initrd_start = simple_strtoul(argv[2], NULL, 16);
651 initrd_end = simple_strtoul(argv[3], NULL, 16);
652 }
653
Masahiro Yamadabc6ed0f2014-04-18 17:41:00 +0900654 fdt_chosen(working_fdt);
Masahiro Yamadadbe963a2014-04-18 17:40:59 +0900655 fdt_initrd(working_fdt, initrd_start, initrd_end);
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100656
657#if defined(CONFIG_FIT_SIGNATURE)
658 } else if (strncmp(argv[1], "che", 3) == 0) {
659 int cfg_noffset;
660 int ret;
661 unsigned long addr;
662 struct fdt_header *blob;
663
664 if (!working_fdt)
665 return CMD_RET_FAILURE;
666
667 if (argc > 2) {
668 addr = simple_strtoul(argv[2], NULL, 16);
669 blob = map_sysmem(addr, 0);
670 } else {
671 blob = (struct fdt_header *)gd->fdt_blob;
672 }
673 if (!fdt_valid(&blob))
674 return 1;
675
676 gd->fdt_blob = blob;
677 cfg_noffset = fit_conf_get_node(working_fdt, NULL);
678 if (!cfg_noffset) {
679 printf("Could not find configuration node: %s\n",
680 fdt_strerror(cfg_noffset));
681 return CMD_RET_FAILURE;
682 }
683
684 ret = fit_config_verify(working_fdt, cfg_noffset);
Simon Glass12df2ab2014-06-12 07:24:45 -0600685 if (ret == 0)
Heiko Schocher097dd3e2014-03-03 12:19:24 +0100686 return CMD_RET_SUCCESS;
687 else
688 return CMD_RET_FAILURE;
689#endif
690
Kumar Gala40afac22008-08-15 08:24:44 -0500691 }
Maxime Riparde6628ad2016-07-05 10:26:45 +0200692#ifdef CONFIG_OF_LIBFDT_OVERLAY
693 /* apply an overlay */
694 else if (strncmp(argv[1], "ap", 2) == 0) {
695 unsigned long addr;
696 struct fdt_header *blob;
Stefan Agner082b1412016-12-20 15:58:45 +0100697 int ret;
Maxime Riparde6628ad2016-07-05 10:26:45 +0200698
699 if (argc != 3)
700 return CMD_RET_USAGE;
701
702 if (!working_fdt)
703 return CMD_RET_FAILURE;
704
705 addr = simple_strtoul(argv[2], NULL, 16);
706 blob = map_sysmem(addr, 0);
707 if (!fdt_valid(&blob))
708 return CMD_RET_FAILURE;
709
Pantelis Antoniou81ecc5d2017-09-04 23:12:12 +0300710 /* apply method prints messages on error */
711 ret = fdt_overlay_apply_verbose(working_fdt, blob);
712 if (ret)
Maxime Riparde6628ad2016-07-05 10:26:45 +0200713 return CMD_RET_FAILURE;
714 }
715#endif
Kumar Gala40afac22008-08-15 08:24:44 -0500716 /* resize the fdt */
717 else if (strncmp(argv[1], "re", 2) == 0) {
Hannes Schmelzeref476832016-09-20 18:10:43 +0200718 uint extrasize;
719 if (argc > 2)
720 extrasize = simple_strtoul(argv[2], NULL, 16);
721 else
722 extrasize = 0;
723 fdt_shrink_to_minimum(working_fdt, extrasize);
Kumar Gala40afac22008-08-15 08:24:44 -0500724 }
725 else {
Kim Phillips99dffca2007-07-17 13:57:04 -0500726 /* Unrecognized command */
Simon Glass4c12eeb2011-12-10 08:44:01 +0000727 return CMD_RET_USAGE;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400728 }
729
730 return 0;
731}
732
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400733/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400734
Simon Glassd14da912013-04-20 08:42:42 +0000735/**
736 * fdt_valid() - Check if an FDT is valid. If not, change it to NULL
737 *
738 * @blobp: Pointer to FDT pointer
739 * @return 1 if OK, 0 if bad (in which case *blobp is set to NULL)
740 */
741static int fdt_valid(struct fdt_header **blobp)
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400742{
Simon Glassd14da912013-04-20 08:42:42 +0000743 const void *blob = *blobp;
744 int err;
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400745
Simon Glassd14da912013-04-20 08:42:42 +0000746 if (blob == NULL) {
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400747 printf ("The address of the fdt is invalid (NULL).\n");
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400748 return 0;
749 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400750
Simon Glassd14da912013-04-20 08:42:42 +0000751 err = fdt_check_header(blob);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400752 if (err == 0)
753 return 1; /* valid */
754
755 if (err < 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400756 printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400757 /*
758 * Be more informative on bad version.
759 */
760 if (err == -FDT_ERR_BADVERSION) {
Simon Glassd14da912013-04-20 08:42:42 +0000761 if (fdt_version(blob) <
Kim Phillipse489b9c2008-06-10 11:06:17 -0500762 FDT_FIRST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700763 printf (" - too old, fdt %d < %d",
Simon Glassd14da912013-04-20 08:42:42 +0000764 fdt_version(blob),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400765 FDT_FIRST_SUPPORTED_VERSION);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400766 }
Simon Glassd14da912013-04-20 08:42:42 +0000767 if (fdt_last_comp_version(blob) >
Kim Phillipse489b9c2008-06-10 11:06:17 -0500768 FDT_LAST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700769 printf (" - too new, fdt %d > %d",
Simon Glassd14da912013-04-20 08:42:42 +0000770 fdt_version(blob),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400771 FDT_LAST_SUPPORTED_VERSION);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400772 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400773 }
774 printf("\n");
Simon Glassd14da912013-04-20 08:42:42 +0000775 *blobp = NULL;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400776 return 0;
777 }
778 return 1;
779}
780
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400781/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400782
783/*
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400784 * Parse the user's input, partially heuristic. Valid formats:
Andy Fleming4abd8442008-03-31 20:45:56 -0500785 * <0x00112233 4 05> - an array of cells. Numbers follow standard
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200786 * C conventions.
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400787 * [00 11 22 .. nn] - byte stream
788 * "string" - If the the value doesn't start with "<" or "[", it is
789 * treated as a string. Note that the quotes are
790 * stripped by the parser before we get the string.
Andy Fleming4abd8442008-03-31 20:45:56 -0500791 * newval: An array of strings containing the new property as specified
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200792 * on the command line
Andy Fleming4abd8442008-03-31 20:45:56 -0500793 * count: The number of strings in the array
794 * data: A bytestream to be placed in the property
795 * len: The length of the resulting bytestream
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400796 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200797static int fdt_parse_prop(char * const *newval, int count, char *data, int *len)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400798{
799 char *cp; /* temporary char pointer */
Andy Fleming4abd8442008-03-31 20:45:56 -0500800 char *newp; /* temporary newval char pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400801 unsigned long tmp; /* holds converted values */
Andy Fleming4abd8442008-03-31 20:45:56 -0500802 int stridx = 0;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400803
Andy Fleming4abd8442008-03-31 20:45:56 -0500804 *len = 0;
805 newp = newval[0];
806
807 /* An array of cells */
808 if (*newp == '<') {
809 newp++;
810 while ((*newp != '>') && (stridx < count)) {
811 /*
812 * Keep searching until we find that last ">"
813 * That way users don't have to escape the spaces
814 */
815 if (*newp == '\0') {
816 newp = newval[++stridx];
817 continue;
818 }
819
820 cp = newp;
821 tmp = simple_strtoul(cp, &newp, 0);
Hannes Schmelzer9620d872017-05-30 15:05:44 +0200822 if (*cp != '?')
823 *(fdt32_t *)data = cpu_to_fdt32(tmp);
824 else
825 newp++;
826
Andy Fleming4abd8442008-03-31 20:45:56 -0500827 data += 4;
828 *len += 4;
829
830 /* If the ptr didn't advance, something went wrong */
831 if ((newp - cp) <= 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400832 printf("Sorry, I could not convert \"%s\"\n",
833 cp);
834 return 1;
835 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500836
837 while (*newp == ' ')
838 newp++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400839 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500840
841 if (*newp != '>') {
842 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400843 return 1;
844 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500845 } else if (*newp == '[') {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400846 /*
847 * Byte stream. Convert the values.
848 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500849 newp++;
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500850 while ((stridx < count) && (*newp != ']')) {
851 while (*newp == ' ')
852 newp++;
853 if (*newp == '\0') {
854 newp = newval[++stridx];
855 continue;
856 }
857 if (!isxdigit(*newp))
858 break;
Andy Fleming4abd8442008-03-31 20:45:56 -0500859 tmp = simple_strtoul(newp, &newp, 16);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400860 *data++ = tmp & 0xFF;
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400861 *len = *len + 1;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400862 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500863 if (*newp != ']') {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700864 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400865 return 1;
866 }
867 } else {
868 /*
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500869 * Assume it is one or more strings. Copy it into our
870 * data area for convenience (including the
871 * terminating '\0's).
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400872 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500873 while (stridx < count) {
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500874 size_t length = strlen(newp) + 1;
Andy Fleming4abd8442008-03-31 20:45:56 -0500875 strcpy(data, newp);
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500876 data += length;
877 *len += length;
Andy Fleming4abd8442008-03-31 20:45:56 -0500878 newp = newval[++stridx];
879 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400880 }
881 return 0;
882}
883
884/****************************************************************************/
885
886/*
887 * Heuristic to guess if this is a string or concatenated strings.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400888 */
889
890static int is_printable_string(const void *data, int len)
891{
892 const char *s = data;
893
894 /* zero length is not */
895 if (len == 0)
896 return 0;
897
Joe Hershberger8805bee2012-08-17 10:34:38 +0000898 /* must terminate with zero or '\n' */
899 if (s[len - 1] != '\0' && s[len - 1] != '\n')
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400900 return 0;
901
902 /* printable or a null byte (concatenated strings) */
Joe Hershberger8805bee2012-08-17 10:34:38 +0000903 while (((*s == '\0') || isprint(*s) || isspace(*s)) && (len > 0)) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400904 /*
905 * If we see a null, there are three possibilities:
906 * 1) If len == 1, it is the end of the string, printable
907 * 2) Next character also a null, not printable.
908 * 3) Next character not a null, continue to check.
909 */
910 if (s[0] == '\0') {
911 if (len == 1)
912 return 1;
913 if (s[1] == '\0')
914 return 0;
915 }
916 s++;
917 len--;
918 }
919
920 /* Not the null termination, or not done yet: not printable */
921 if (*s != '\0' || (len != 0))
922 return 0;
923
924 return 1;
925}
926
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400927
928/*
929 * Print the property in the best format, a heuristic guess. Print as
930 * a string, concatenated strings, a byte, word, double word, or (if all
931 * else fails) it is printed as a stream of bytes.
932 */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400933static void print_data(const void *data, int len)
934{
935 int j;
Heinrich Schuchardt43913f02020-06-19 19:45:55 +0200936 const char *env_max_dump;
937 ulong max_dump = ULONG_MAX;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400938
939 /* no data, don't print */
940 if (len == 0)
941 return;
942
Heinrich Schuchardt43913f02020-06-19 19:45:55 +0200943 env_max_dump = env_get("fdt_max_dump");
944 if (env_max_dump)
945 max_dump = simple_strtoul(env_max_dump, NULL, 16);
946
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400947 /*
948 * It is a string, but it may have multiple strings (embedded '\0's).
949 */
950 if (is_printable_string(data, len)) {
951 puts("\"");
952 j = 0;
953 while (j < len) {
954 if (j > 0)
955 puts("\", \"");
956 puts(data);
957 j += strlen(data) + 1;
958 data += strlen(data) + 1;
959 }
960 puts("\"");
961 return;
962 }
963
Andy Fleming4abd8442008-03-31 20:45:56 -0500964 if ((len %4) == 0) {
Heinrich Schuchardt43913f02020-06-19 19:45:55 +0200965 if (len > max_dump)
Tom Rini085b9c32012-10-29 14:53:18 +0000966 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000967 else {
Kim Phillips088f1b12012-10-29 13:34:31 +0000968 const __be32 *p;
Andy Fleming4abd8442008-03-31 20:45:56 -0500969
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000970 printf("<");
971 for (j = 0, p = data; j < len/4; j++)
972 printf("0x%08x%s", fdt32_to_cpu(p[j]),
973 j < (len/4 - 1) ? " " : "");
974 printf(">");
975 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500976 } else { /* anything else... hexdump */
Heinrich Schuchardt43913f02020-06-19 19:45:55 +0200977 if (len > max_dump)
Tom Rini085b9c32012-10-29 14:53:18 +0000978 printf("* 0x%p [0x%08x]", data, len);
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000979 else {
980 const u8 *s;
Andy Fleming4abd8442008-03-31 20:45:56 -0500981
Joe Hershbergerf0a29d42012-08-17 10:34:36 +0000982 printf("[");
983 for (j = 0, s = data; j < len; j++)
984 printf("%02x%s", s[j], j < len - 1 ? " " : "");
985 printf("]");
986 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400987 }
988}
989
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400990/****************************************************************************/
991
992/*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500993 * Recursively print (a portion of) the working_fdt. The depth parameter
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400994 * determines how deeply nested the fdt is printed.
995 */
Kumar Galadbaf07c2007-11-21 14:07:46 -0600996static int fdt_print(const char *pathp, char *prop, int depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400997{
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400998 static char tabs[MAX_LEVEL+1] =
999 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
1000 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
Kumar Galadbaf07c2007-11-21 14:07:46 -06001001 const void *nodep; /* property node pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001002 int nodeoffset; /* node offset from libfdt */
1003 int nextoffset; /* next node offset from libfdt */
1004 uint32_t tag; /* tag */
1005 int len; /* length of the property */
1006 int level = 0; /* keep track of nesting level */
Gerald Van Baren91623522007-11-22 17:23:23 -05001007 const struct fdt_property *fdt_prop;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001008
Kim Phillipse489b9c2008-06-10 11:06:17 -05001009 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001010 if (nodeoffset < 0) {
1011 /*
1012 * Not found or something else bad happened.
1013 */
Kumar Gala8d04f022007-10-24 11:04:22 -05001014 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -04001015 fdt_strerror(nodeoffset));
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001016 return 1;
1017 }
1018 /*
1019 * The user passed in a property as well as node path.
1020 * Print only the given property and then return.
1021 */
1022 if (prop) {
Kim Phillipse489b9c2008-06-10 11:06:17 -05001023 nodep = fdt_getprop (working_fdt, nodeoffset, prop, &len);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001024 if (len == 0) {
1025 /* no property value */
1026 printf("%s %s\n", pathp, prop);
1027 return 0;
Simon Glass9f952672017-06-07 10:28:42 -06001028 } else if (nodep && len > 0) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -05001029 printf("%s = ", prop);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001030 print_data (nodep, len);
1031 printf("\n");
1032 return 0;
1033 } else {
1034 printf ("libfdt fdt_getprop(): %s\n",
1035 fdt_strerror(len));
1036 return 1;
1037 }
1038 }
1039
1040 /*
1041 * The user passed in a node path and no property,
1042 * print the node and all subnodes.
1043 */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001044 while(level >= 0) {
Kim Phillipse489b9c2008-06-10 11:06:17 -05001045 tag = fdt_next_tag(working_fdt, nodeoffset, &nextoffset);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001046 switch(tag) {
1047 case FDT_BEGIN_NODE:
Kim Phillipse489b9c2008-06-10 11:06:17 -05001048 pathp = fdt_get_name(working_fdt, nodeoffset, NULL);
Gerald Van Baren91623522007-11-22 17:23:23 -05001049 if (level <= depth) {
1050 if (pathp == NULL)
1051 pathp = "/* NULL pointer error */";
1052 if (*pathp == '\0')
1053 pathp = "/"; /* root is nameless */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001054 printf("%s%s {\n",
1055 &tabs[MAX_LEVEL - level], pathp);
Gerald Van Baren91623522007-11-22 17:23:23 -05001056 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001057 level++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001058 if (level >= MAX_LEVEL) {
Gerald Van Baren91623522007-11-22 17:23:23 -05001059 printf("Nested too deep, aborting.\n");
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001060 return 1;
1061 }
1062 break;
1063 case FDT_END_NODE:
1064 level--;
Gerald Van Baren91623522007-11-22 17:23:23 -05001065 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001066 printf("%s};\n", &tabs[MAX_LEVEL - level]);
1067 if (level == 0) {
1068 level = -1; /* exit the loop */
1069 }
1070 break;
1071 case FDT_PROP:
Kim Phillipse489b9c2008-06-10 11:06:17 -05001072 fdt_prop = fdt_offset_ptr(working_fdt, nodeoffset,
Gerald Van Baren91623522007-11-22 17:23:23 -05001073 sizeof(*fdt_prop));
Kim Phillipse489b9c2008-06-10 11:06:17 -05001074 pathp = fdt_string(working_fdt,
Gerald Van Baren91623522007-11-22 17:23:23 -05001075 fdt32_to_cpu(fdt_prop->nameoff));
1076 len = fdt32_to_cpu(fdt_prop->len);
1077 nodep = fdt_prop->data;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001078 if (len < 0) {
1079 printf ("libfdt fdt_getprop(): %s\n",
1080 fdt_strerror(len));
1081 return 1;
1082 } else if (len == 0) {
1083 /* the property has no value */
Gerald Van Baren91623522007-11-22 17:23:23 -05001084 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001085 printf("%s%s;\n",
1086 &tabs[MAX_LEVEL - level],
1087 pathp);
1088 } else {
Gerald Van Baren91623522007-11-22 17:23:23 -05001089 if (level <= depth) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -05001090 printf("%s%s = ",
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001091 &tabs[MAX_LEVEL - level],
1092 pathp);
1093 print_data (nodep, len);
1094 printf(";\n");
1095 }
1096 }
1097 break;
1098 case FDT_NOP:
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -07001099 printf("%s/* NOP */\n", &tabs[MAX_LEVEL - level]);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001100 break;
1101 case FDT_END:
1102 return 1;
1103 default:
Gerald Van Baren91623522007-11-22 17:23:23 -05001104 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -04001105 printf("Unknown tag 0x%08X\n", tag);
1106 return 1;
1107 }
1108 nodeoffset = nextoffset;
1109 }
1110 return 0;
1111}
1112
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001113/********************************************************************/
Kim Phillips088f1b12012-10-29 13:34:31 +00001114#ifdef CONFIG_SYS_LONGHELP
1115static char fdt_help_text[] =
Simon Glass4b578652013-04-20 08:42:44 +00001116 "addr [-c] <addr> [<length>] - Set the [control] fdt location to <addr>\n"
Maxime Riparde6628ad2016-07-05 10:26:45 +02001117#ifdef CONFIG_OF_LIBFDT_OVERLAY
1118 "fdt apply <addr> - Apply overlay to the DT\n"
1119#endif
Gerald Van Barenfd61e552007-06-25 23:25:28 -04001120#ifdef CONFIG_OF_BOARD_SETUP
1121 "fdt boardsetup - Do board-specific set up\n"
1122#endif
Simon Glassc654b512014-10-23 18:58:54 -06001123#ifdef CONFIG_OF_SYSTEM_SETUP
1124 "fdt systemsetup - Do system-specific set up\n"
1125#endif
Gerald Van Baren238cb7a2008-01-05 15:33:29 -05001126 "fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n"
Hannes Schmelzeref476832016-09-20 18:10:43 +02001127 "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 -04001128 "fdt print <path> [<prop>] - Recursive print starting at <path>\n"
1129 "fdt list <path> [<prop>] - Print one level starting at <path>\n"
Joe Hershbergerbc802952012-08-17 10:34:37 +00001130 "fdt get value <var> <path> <prop> - Get <property> and store in <var>\n"
1131 "fdt get name <var> <path> <index> - Get name of node <index> and store in <var>\n"
1132 "fdt get addr <var> <path> <prop> - Get start address of <property> and store in <var>\n"
1133 "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 -04001134 "fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
1135 "fdt mknode <path> <node> - Create a new node after <path>\n"
1136 "fdt rm <path> [<prop>] - Delete the node or <property>\n"
Heiko Schocher82441272018-11-15 06:06:06 +01001137 "fdt header [get <var> <member>] - Display header info\n"
1138 " get - get header member <member> and store it in <var>\n"
Kumar Gala804887e2008-02-15 03:34:36 -06001139 "fdt bootcpu <id> - Set boot cpuid\n"
1140 "fdt memory <addr> <size> - Add/Update memory node\n"
1141 "fdt rsvmem print - Show current mem reserves\n"
1142 "fdt rsvmem add <addr> <size> - Add a mem reserve\n"
1143 "fdt rsvmem delete <index> - Delete a mem reserves\n"
Kumar Galaf953d992008-08-15 08:24:34 -05001144 "fdt chosen [<start> <end>] - Add/update the /chosen branch in the tree\n"
1145 " <start>/<end> - initrd start/end addr\n"
Heiko Schocher097dd3e2014-03-03 12:19:24 +01001146#if defined(CONFIG_FIT_SIGNATURE)
1147 "fdt checksign [<addr>] - check FIT signature\n"
1148 " <start> - addr of key blob\n"
1149 " default gd->fdt_blob\n"
1150#endif
Robert P. J. Day1cc0a9f2016-05-04 04:47:31 -04001151 "NOTE: Dereference aliases by omitting the leading '/', "
Kim Phillips088f1b12012-10-29 13:34:31 +00001152 "e.g. fdt print ethernet0.";
1153#endif
1154
1155U_BOOT_CMD(
1156 fdt, 255, 0, do_fdt,
1157 "flattened device tree utility commands", fdt_help_text
Gerald Van Baren781e09e2007-03-31 12:22:10 -04001158);