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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
wdenka68d3ed2002-10-11 08:38:32 +00002/*
Wolfgang Denkea009d42013-03-23 23:50:28 +00003 * (C) Copyright 2000-2013
wdenka68d3ed2002-10-11 08:38:32 +00004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 *
6 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Andreas Heppel <aheppel@sysgo.de>
Kim Phillipsa000b792011-04-05 07:15:14 +00008 *
9 * Copyright 2011 Freescale Semiconductor, Inc.
wdenka68d3ed2002-10-11 08:38:32 +000010 */
11
Wolfgang Denkea882ba2010-06-20 23:33:59 +020012/*
wdenka68d3ed2002-10-11 08:38:32 +000013 * Support for persistent environment data
14 *
Wolfgang Denkea882ba2010-06-20 23:33:59 +020015 * The "environment" is stored on external storage as a list of '\0'
16 * terminated "name=value" strings. The end of the list is marked by
Robert P. J. Dayfc0b5942016-09-07 14:27:59 -040017 * a double '\0'. The environment is preceded by a 32 bit CRC over
Wolfgang Denkea882ba2010-06-20 23:33:59 +020018 * the data part and, in case of redundant environment, a byte of
19 * flags.
wdenka68d3ed2002-10-11 08:38:32 +000020 *
Wolfgang Denkea882ba2010-06-20 23:33:59 +020021 * This linearized representation will also be used before
22 * relocation, i. e. as long as we don't have a full C runtime
23 * environment. After that, we use a hash table.
wdenka68d3ed2002-10-11 08:38:32 +000024 */
25
26#include <common.h>
Simon Glass18d66532014-04-10 20:01:25 -060027#include <cli.h>
wdenka68d3ed2002-10-11 08:38:32 +000028#include <command.h>
Simon Glass24b852a2015-11-08 23:47:45 -070029#include <console.h>
Simon Glassf1f0ae62019-08-01 09:46:41 -060030#include <env.h>
Simon Glassf3998fd2019-08-02 09:44:25 -060031#include <env_internal.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060032#include <log.h>
Simon Glass90526e92020-05-10 11:39:56 -060033#include <net.h>
Wolfgang Denkea882ba2010-06-20 23:33:59 +020034#include <search.h>
35#include <errno.h>
Peter Tyser246c6922009-10-25 15:12:56 -050036#include <malloc.h>
Joe Hershberger0eb25b62015-03-22 17:08:59 -050037#include <mapmem.h>
Simon Glasscd93d622020-05-10 11:40:13 -060038#include <linux/bitops.h>
Simon Glass3db71102019-11-14 12:57:16 -070039#include <u-boot/crc.h>
wdenk2a3cb022002-11-05 21:01:48 +000040#include <watchdog.h>
wdenka68d3ed2002-10-11 08:38:32 +000041#include <linux/stddef.h>
42#include <asm/byteorder.h>
Simon Glassfd37dac2013-10-25 23:01:31 -060043#include <asm/io.h>
wdenka68d3ed2002-10-11 08:38:32 +000044
Wolfgang Denkd87080b2006-03-31 18:32:53 +020045DECLARE_GLOBAL_DATA_PTR;
46
Patrick Delaunay2643c852019-02-18 10:58:16 +010047#if defined(CONFIG_ENV_IS_IN_EEPROM) || \
48 defined(CONFIG_ENV_IS_IN_FLASH) || \
49 defined(CONFIG_ENV_IS_IN_MMC) || \
50 defined(CONFIG_ENV_IS_IN_FAT) || \
51 defined(CONFIG_ENV_IS_IN_EXT4) || \
52 defined(CONFIG_ENV_IS_IN_NAND) || \
53 defined(CONFIG_ENV_IS_IN_NVRAM) || \
54 defined(CONFIG_ENV_IS_IN_ONENAND) || \
55 defined(CONFIG_ENV_IS_IN_SATA) || \
56 defined(CONFIG_ENV_IS_IN_SPI_FLASH) || \
57 defined(CONFIG_ENV_IS_IN_REMOTE) || \
58 defined(CONFIG_ENV_IS_IN_UBI)
59
60#define ENV_IS_IN_DEVICE
61
62#endif
63
64#if !defined(ENV_IS_IN_DEVICE) && \
Macpaul Linf3c615b2011-04-26 16:16:45 +000065 !defined(CONFIG_ENV_IS_NOWHERE)
Tuomas Tynkkynen7b7341d2017-10-10 21:59:40 +030066# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|MMC|FAT|EXT4|\
Lothar Waßmannd1b88cd2017-06-08 14:16:14 +020067NAND|NVRAM|ONENAND|SATA|SPI_FLASH|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE
wdenka68d3ed2002-10-11 08:38:32 +000068#endif
69
Wolfgang Denkea882ba2010-06-20 23:33:59 +020070/*
71 * Maximum expected input data size for import command
72 */
73#define MAX_ENV_SIZE (1 << 20) /* 1 MiB */
wdenka68d3ed2002-10-11 08:38:32 +000074
wdenka68d3ed2002-10-11 08:38:32 +000075/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +020076 * This variable is incremented on each do_env_set(), so it can
Simon Glassf1f0ae62019-08-01 09:46:41 -060077 * be used via env_get_id() as an indication, if the environment
Heiko Schocherda954272009-04-28 08:36:11 +020078 * has changed or not. So it is possible to reread an environment
79 * variable only if the environment was changed ... done so for
80 * example in NetInitLoop()
81 */
Heiko Schocher2f70c492009-02-10 09:38:52 +010082static int env_id = 1;
wdenka68d3ed2002-10-11 08:38:32 +000083
Simon Glassf1f0ae62019-08-01 09:46:41 -060084int env_get_id(void)
Heiko Schocher2f70c492009-02-10 09:38:52 +010085{
86 return env_id;
87}
wdenka68d3ed2002-10-11 08:38:32 +000088
Ilya Yanok7ac2fe22012-09-18 00:22:50 +000089#ifndef CONFIG_SPL_BUILD
Mike Frysinger4c94f6c2009-05-24 02:26:19 -040090/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +020091 * Command interface: print one or all environment variables
92 *
93 * Returns 0 in case of error, or length of printed string
Mike Frysinger4c94f6c2009-05-24 02:26:19 -040094 */
Joe Hershbergerbe112352012-12-11 22:16:23 -060095static int env_print(char *name, int flag)
wdenka68d3ed2002-10-11 08:38:32 +000096{
Wolfgang Denkea882ba2010-06-20 23:33:59 +020097 char *res = NULL;
Maxime Larocque22a4a6c2012-09-28 05:00:13 +000098 ssize_t len;
wdenka68d3ed2002-10-11 08:38:32 +000099
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200100 if (name) { /* print a single name */
Simon Glassdd2408c2019-08-02 09:44:18 -0600101 struct env_entry e, *ep;
wdenka68d3ed2002-10-11 08:38:32 +0000102
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200103 e.key = name;
104 e.data = NULL;
Simon Glass3f0d6802019-08-01 09:47:09 -0600105 hsearch_r(e, ENV_FIND, &ep, &env_htab, flag);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200106 if (ep == NULL)
107 return 0;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000108 len = printf("%s=%s\n", ep->key, ep->data);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200109 return len;
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400110 }
wdenka68d3ed2002-10-11 08:38:32 +0000111
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200112 /* print whole list */
Joe Hershbergerbe112352012-12-11 22:16:23 -0600113 len = hexport_r(&env_htab, '\n', flag, &res, 0, 0, NULL);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200114
115 if (len > 0) {
116 puts(res);
117 free(res);
118 return len;
119 }
120
121 /* should never happen */
Maxime Larocque22a4a6c2012-09-28 05:00:13 +0000122 printf("## Error: cannot export environment\n");
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200123 return 0;
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400124}
125
Simon Glass09140112020-05-10 11:40:03 -0600126static int do_env_print(struct cmd_tbl *cmdtp, int flag, int argc,
127 char *const argv[])
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400128{
129 int i;
130 int rcode = 0;
Joe Hershbergerbe112352012-12-11 22:16:23 -0600131 int env_flag = H_HIDE_DOT;
132
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900133#if defined(CONFIG_CMD_NVEDIT_EFI)
134 if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'e')
135 return do_env_print_efi(cmdtp, flag, --argc, ++argv);
136#endif
137
Joe Hershbergerbe112352012-12-11 22:16:23 -0600138 if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') {
139 argc--;
140 argv++;
141 env_flag &= ~H_HIDE_DOT;
142 }
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400143
144 if (argc == 1) {
145 /* print all env vars */
Joe Hershbergerbe112352012-12-11 22:16:23 -0600146 rcode = env_print(NULL, env_flag);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200147 if (!rcode)
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400148 return 1;
149 printf("\nEnvironment size: %d/%ld bytes\n",
150 rcode, (ulong)ENV_SIZE);
wdenka68d3ed2002-10-11 08:38:32 +0000151 return 0;
152 }
153
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400154 /* print selected env vars */
Joe Hershbergerbe112352012-12-11 22:16:23 -0600155 env_flag &= ~H_HIDE_DOT;
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400156 for (i = 1; i < argc; ++i) {
Joe Hershbergerbe112352012-12-11 22:16:23 -0600157 int rc = env_print(argv[i], env_flag);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200158 if (!rc) {
159 printf("## Error: \"%s\" not defined\n", argv[i]);
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400160 ++rcode;
wdenka68d3ed2002-10-11 08:38:32 +0000161 }
162 }
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400163
wdenka68d3ed2002-10-11 08:38:32 +0000164 return rcode;
165}
166
Kim Phillipsa000b792011-04-05 07:15:14 +0000167#ifdef CONFIG_CMD_GREPENV
Simon Glass09140112020-05-10 11:40:03 -0600168static int do_env_grep(struct cmd_tbl *cmdtp, int flag,
169 int argc, char *const argv[])
Kim Phillipsa000b792011-04-05 07:15:14 +0000170{
Wolfgang Denk5a31ea02013-03-23 23:50:29 +0000171 char *res = NULL;
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000172 int len, grep_how, grep_what;
Kim Phillipsa000b792011-04-05 07:15:14 +0000173
174 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000175 return CMD_RET_USAGE;
Kim Phillipsa000b792011-04-05 07:15:14 +0000176
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000177 grep_how = H_MATCH_SUBSTR; /* default: substring search */
178 grep_what = H_MATCH_BOTH; /* default: grep names and values */
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000179
Pierre Aubert9a832332013-10-08 14:20:27 +0200180 while (--argc > 0 && **++argv == '-') {
181 char *arg = *argv;
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000182 while (*++arg) {
183 switch (*arg) {
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000184#ifdef CONFIG_REGEX
185 case 'e': /* use regex matching */
186 grep_how = H_MATCH_REGEX;
187 break;
188#endif
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000189 case 'n': /* grep for name */
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000190 grep_what = H_MATCH_KEY;
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000191 break;
192 case 'v': /* grep for value */
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000193 grep_what = H_MATCH_DATA;
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000194 break;
195 case 'b': /* grep for both */
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000196 grep_what = H_MATCH_BOTH;
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000197 break;
198 case '-':
199 goto DONE;
200 default:
201 return CMD_RET_USAGE;
202 }
203 }
204 }
205
206DONE:
Wolfgang Denk5a31ea02013-03-23 23:50:29 +0000207 len = hexport_r(&env_htab, '\n',
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000208 flag | grep_what | grep_how,
Wolfgang Denk5a31ea02013-03-23 23:50:29 +0000209 &res, 0, argc, argv);
Kim Phillipsa000b792011-04-05 07:15:14 +0000210
Wolfgang Denk5a31ea02013-03-23 23:50:29 +0000211 if (len > 0) {
212 puts(res);
213 free(res);
Kim Phillipsa000b792011-04-05 07:15:14 +0000214 }
215
Wolfgang Denk5a31ea02013-03-23 23:50:29 +0000216 if (len < 2)
217 return 1;
218
219 return 0;
Kim Phillipsa000b792011-04-05 07:15:14 +0000220}
221#endif
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000222#endif /* CONFIG_SPL_BUILD */
Kim Phillipsa000b792011-04-05 07:15:14 +0000223
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200224/*
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000225 * Set a new environment variable,
226 * or replace or delete an existing one.
Joe Hershberger25980902012-12-11 22:16:31 -0600227 */
Simon Glass09140112020-05-10 11:40:03 -0600228static int _do_env_set(int flag, int argc, char *const argv[], int env_flag)
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000229{
230 int i, len;
231 char *name, *value, *s;
Simon Glassdd2408c2019-08-02 09:44:18 -0600232 struct env_entry e, *ep;
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000233
Joe Hershberger24ab5a12012-12-11 22:16:35 -0600234 debug("Initial value for argc=%d\n", argc);
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +0900235
236#if CONFIG_IS_ENABLED(CMD_NVEDIT_EFI)
237 if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'e')
238 return do_env_set_efi(NULL, flag, --argc, ++argv);
239#endif
240
Joe Hershberger24ab5a12012-12-11 22:16:35 -0600241 while (argc > 1 && **(argv + 1) == '-') {
242 char *arg = *++argv;
243
244 --argc;
245 while (*++arg) {
246 switch (*arg) {
247 case 'f': /* force */
248 env_flag |= H_FORCE;
249 break;
250 default:
251 return CMD_RET_USAGE;
252 }
253 }
254 }
255 debug("Final value for argc=%d\n", argc);
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000256 name = argv[1];
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000257
258 if (strchr(name, '=')) {
259 printf("## Error: illegal character '='"
260 "in variable name \"%s\"\n", name);
261 return 1;
262 }
263
264 env_id++;
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000265
wdenka68d3ed2002-10-11 08:38:32 +0000266 /* Delete only ? */
Igor Grinbergd09b1782011-11-07 01:13:59 +0000267 if (argc < 3 || argv[2] == NULL) {
Joe Hershberger24ab5a12012-12-11 22:16:35 -0600268 int rc = hdelete_r(name, &env_htab, env_flag);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200269 return !rc;
wdenka68d3ed2002-10-11 08:38:32 +0000270 }
271
272 /*
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200273 * Insert / replace new value
wdenka68d3ed2002-10-11 08:38:32 +0000274 */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000275 for (i = 2, len = 0; i < argc; ++i)
wdenka68d3ed2002-10-11 08:38:32 +0000276 len += strlen(argv[i]) + 1;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000277
278 value = malloc(len);
279 if (value == NULL) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200280 printf("## Can't malloc %d bytes\n", len);
wdenka68d3ed2002-10-11 08:38:32 +0000281 return 1;
282 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000283 for (i = 2, s = value; i < argc; ++i) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200284 char *v = argv[i];
wdenka68d3ed2002-10-11 08:38:32 +0000285
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200286 while ((*s++ = *v++) != '\0')
wdenka68d3ed2002-10-11 08:38:32 +0000287 ;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000288 *(s - 1) = ' ';
wdenka68d3ed2002-10-11 08:38:32 +0000289 }
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200290 if (s != value)
291 *--s = '\0';
wdenka68d3ed2002-10-11 08:38:32 +0000292
Igor Grinbergd09b1782011-11-07 01:13:59 +0000293 e.key = name;
294 e.data = value;
Simon Glass3f0d6802019-08-01 09:47:09 -0600295 hsearch_r(e, ENV_ENTER, &ep, &env_htab, env_flag);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200296 free(value);
297 if (!ep) {
298 printf("## Error inserting \"%s\" variable, errno=%d\n",
299 name, errno);
300 return 1;
301 }
wdenka68d3ed2002-10-11 08:38:32 +0000302
wdenka68d3ed2002-10-11 08:38:32 +0000303 return 0;
304}
305
Simon Glass382bee52017-08-03 12:22:09 -0600306int env_set(const char *varname, const char *varvalue)
wdenka68d3ed2002-10-11 08:38:32 +0000307{
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200308 const char * const argv[4] = { "setenv", varname, varvalue, NULL };
309
Joe Hershbergera7eb1d62013-04-08 10:32:50 +0000310 /* before import into hashtable */
311 if (!(gd->flags & GD_FLG_ENV_READY))
312 return 1;
313
Igor Grinbergd09b1782011-11-07 01:13:59 +0000314 if (varvalue == NULL || varvalue[0] == '\0')
Joe Hershberger94b467b2015-05-20 14:27:21 -0500315 return _do_env_set(0, 2, (char * const *)argv, H_PROGRAMMATIC);
Jeffrey Mann9ffd4512007-04-23 14:00:11 +0200316 else
Joe Hershberger94b467b2015-05-20 14:27:21 -0500317 return _do_env_set(0, 3, (char * const *)argv, H_PROGRAMMATIC);
wdenka68d3ed2002-10-11 08:38:32 +0000318}
319
Simon Glassd67f10c2011-10-24 17:59:59 +0000320/**
321 * Set an environment variable to an integer value
322 *
Simon Glass96022862013-05-07 06:11:45 +0000323 * @param varname Environment variable to set
Simon Glassd67f10c2011-10-24 17:59:59 +0000324 * @param value Value to set it to
325 * @return 0 if ok, 1 on error
326 */
Simon Glass018f5302017-08-03 12:22:10 -0600327int env_set_ulong(const char *varname, ulong value)
Simon Glassd67f10c2011-10-24 17:59:59 +0000328{
329 /* TODO: this should be unsigned */
330 char *str = simple_itoa(value);
331
Simon Glass382bee52017-08-03 12:22:09 -0600332 return env_set(varname, str);
Simon Glassd67f10c2011-10-24 17:59:59 +0000333}
334
335/**
Simon Glassbfc59962013-02-24 17:33:21 +0000336 * Set an environment variable to an value in hex
Simon Glassd67f10c2011-10-24 17:59:59 +0000337 *
Simon Glass96022862013-05-07 06:11:45 +0000338 * @param varname Environment variable to set
Simon Glassbfc59962013-02-24 17:33:21 +0000339 * @param value Value to set it to
Simon Glassd67f10c2011-10-24 17:59:59 +0000340 * @return 0 if ok, 1 on error
341 */
Simon Glass018f5302017-08-03 12:22:10 -0600342int env_set_hex(const char *varname, ulong value)
Simon Glassd67f10c2011-10-24 17:59:59 +0000343{
344 char str[17];
345
Simon Glassbfc59962013-02-24 17:33:21 +0000346 sprintf(str, "%lx", value);
Simon Glass382bee52017-08-03 12:22:09 -0600347 return env_set(varname, str);
Simon Glassd67f10c2011-10-24 17:59:59 +0000348}
349
Simon Glassbfebc8c2017-08-03 12:22:13 -0600350ulong env_get_hex(const char *varname, ulong default_val)
Simon Glass76b8f792013-04-20 08:42:43 +0000351{
352 const char *s;
353 ulong value;
354 char *endp;
355
Simon Glass00caae62017-08-03 12:22:12 -0600356 s = env_get(varname);
Simon Glass76b8f792013-04-20 08:42:43 +0000357 if (s)
358 value = simple_strtoul(s, &endp, 16);
359 if (!s || endp == s)
360 return default_val;
361
362 return value;
363}
364
Alex Kiernan9925f1d2018-04-01 09:22:38 +0000365int eth_env_get_enetaddr(const char *name, uint8_t *enetaddr)
366{
Joe Hershbergerfb8977c2019-09-13 19:21:16 -0500367 string_to_enetaddr(env_get(name), enetaddr);
Alex Kiernan9925f1d2018-04-01 09:22:38 +0000368 return is_valid_ethaddr(enetaddr);
369}
370
371int eth_env_set_enetaddr(const char *name, const uint8_t *enetaddr)
372{
373 char buf[ARP_HLEN_ASCII + 1];
374
375 if (eth_env_get_enetaddr(name, (uint8_t *)buf))
376 return -EEXIST;
377
378 sprintf(buf, "%pM", enetaddr);
379
380 return env_set(name, buf);
381}
382
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000383#ifndef CONFIG_SPL_BUILD
Simon Glass09140112020-05-10 11:40:03 -0600384static int do_env_set(struct cmd_tbl *cmdtp, int flag, int argc,
385 char *const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000386{
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200387 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000388 return CMD_RET_USAGE;
wdenka68d3ed2002-10-11 08:38:32 +0000389
Joe Hershberger94b467b2015-05-20 14:27:21 -0500390 return _do_env_set(flag, argc, argv, H_INTERACTIVE);
wdenka68d3ed2002-10-11 08:38:32 +0000391}
392
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200393/*
wdenka68d3ed2002-10-11 08:38:32 +0000394 * Prompt for environment variable
395 */
Jon Loeligerc76fe472007-07-08 18:02:23 -0500396#if defined(CONFIG_CMD_ASKENV)
Simon Glass09140112020-05-10 11:40:03 -0600397int do_env_ask(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000398{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200399 char message[CONFIG_SYS_CBSIZE];
Wolfgang Denk7d855912013-02-20 04:53:16 +0000400 int i, len, pos, size;
wdenka68d3ed2002-10-11 08:38:32 +0000401 char *local_args[4];
Wolfgang Denk7d855912013-02-20 04:53:16 +0000402 char *endptr;
wdenka68d3ed2002-10-11 08:38:32 +0000403
404 local_args[0] = argv[0];
405 local_args[1] = argv[1];
406 local_args[2] = NULL;
407 local_args[3] = NULL;
408
Wolfgang Denk7d855912013-02-20 04:53:16 +0000409 /*
410 * Check the syntax:
411 *
412 * env_ask envname [message1 ...] [size]
413 */
414 if (argc == 1)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000415 return CMD_RET_USAGE;
wdenka68d3ed2002-10-11 08:38:32 +0000416
Wolfgang Denk7d855912013-02-20 04:53:16 +0000417 /*
418 * We test the last argument if it can be converted
419 * into a decimal number. If yes, we assume it's
420 * the size. Otherwise we echo it as part of the
421 * message.
422 */
423 i = simple_strtoul(argv[argc - 1], &endptr, 10);
424 if (*endptr != '\0') { /* no size */
425 size = CONFIG_SYS_CBSIZE - 1;
426 } else { /* size given */
427 size = i;
428 --argc;
429 }
wdenka68d3ed2002-10-11 08:38:32 +0000430
Wolfgang Denk7d855912013-02-20 04:53:16 +0000431 if (argc <= 2) {
432 sprintf(message, "Please enter '%s': ", argv[1]);
433 } else {
434 /* env_ask envname message1 ... messagen [size] */
Tom Rinibf52fcd2017-10-07 11:27:59 -0400435 for (i = 2, pos = 0; i < argc && pos+1 < sizeof(message); i++) {
Macpaul Linf3c615b2011-04-26 16:16:45 +0000436 if (pos)
wdenka68d3ed2002-10-11 08:38:32 +0000437 message[pos++] = ' ';
Macpaul Linf3c615b2011-04-26 16:16:45 +0000438
Tom Rinic6677232017-09-26 19:37:11 -0400439 strncpy(message + pos, argv[i], sizeof(message) - pos);
wdenka68d3ed2002-10-11 08:38:32 +0000440 pos += strlen(argv[i]);
441 }
Tom Rinic6677232017-09-26 19:37:11 -0400442 if (pos < sizeof(message) - 1) {
443 message[pos++] = ' ';
444 message[pos] = '\0';
445 } else
446 message[CONFIG_SYS_CBSIZE - 1] = '\0';
wdenka68d3ed2002-10-11 08:38:32 +0000447 }
448
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200449 if (size >= CONFIG_SYS_CBSIZE)
450 size = CONFIG_SYS_CBSIZE - 1;
wdenka68d3ed2002-10-11 08:38:32 +0000451
452 if (size <= 0)
453 return 1;
454
455 /* prompt for input */
Simon Glasse1bf8242014-04-10 20:01:27 -0600456 len = cli_readline(message);
wdenka68d3ed2002-10-11 08:38:32 +0000457
458 if (size < len)
459 console_buffer[size] = '\0';
460
461 len = 2;
462 if (console_buffer[0] != '\0') {
463 local_args[2] = console_buffer;
464 len = 3;
465 }
466
467 /* Continue calling setenv code */
Joe Hershberger94b467b2015-05-20 14:27:21 -0500468 return _do_env_set(flag, len, local_args, H_INTERACTIVE);
wdenka68d3ed2002-10-11 08:38:32 +0000469}
Jon Loeliger90253172007-07-10 11:02:44 -0500470#endif
wdenka68d3ed2002-10-11 08:38:32 +0000471
Joe Hershberger5e2b3e02012-12-11 22:16:25 -0600472#if defined(CONFIG_CMD_ENV_CALLBACK)
Joe Hershbergercca98fd2015-05-20 14:27:19 -0500473static int print_static_binding(const char *var_name, const char *callback_name,
474 void *priv)
Joe Hershberger5e2b3e02012-12-11 22:16:25 -0600475{
476 printf("\t%-20s %-20s\n", var_name, callback_name);
477
478 return 0;
479}
480
Simon Glassdd2408c2019-08-02 09:44:18 -0600481static int print_active_callback(struct env_entry *entry)
Joe Hershberger5e2b3e02012-12-11 22:16:25 -0600482{
483 struct env_clbk_tbl *clbkp;
484 int i;
485 int num_callbacks;
486
487 if (entry->callback == NULL)
488 return 0;
489
490 /* look up the callback in the linker-list */
491 num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
492 for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
493 i < num_callbacks;
494 i++, clbkp++) {
495#if defined(CONFIG_NEEDS_MANUAL_RELOC)
496 if (entry->callback == clbkp->callback + gd->reloc_off)
497#else
498 if (entry->callback == clbkp->callback)
499#endif
500 break;
501 }
502
503 if (i == num_callbacks)
504 /* this should probably never happen, but just in case... */
505 printf("\t%-20s %p\n", entry->key, entry->callback);
506 else
507 printf("\t%-20s %-20s\n", entry->key, clbkp->name);
508
509 return 0;
510}
511
512/*
513 * Print the callbacks available and what they are bound to
514 */
Simon Glass09140112020-05-10 11:40:03 -0600515int do_env_callback(struct cmd_tbl *cmdtp, int flag, int argc,
516 char *const argv[])
Joe Hershberger5e2b3e02012-12-11 22:16:25 -0600517{
518 struct env_clbk_tbl *clbkp;
519 int i;
520 int num_callbacks;
521
522 /* Print the available callbacks */
523 puts("Available callbacks:\n");
524 puts("\tCallback Name\n");
525 puts("\t-------------\n");
526 num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
527 for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
528 i < num_callbacks;
529 i++, clbkp++)
530 printf("\t%s\n", clbkp->name);
531 puts("\n");
532
533 /* Print the static bindings that may exist */
534 puts("Static callback bindings:\n");
535 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
536 printf("\t%-20s %-20s\n", "-------------", "-------------");
Joe Hershbergercca98fd2015-05-20 14:27:19 -0500537 env_attr_walk(ENV_CALLBACK_LIST_STATIC, print_static_binding, NULL);
Joe Hershberger5e2b3e02012-12-11 22:16:25 -0600538 puts("\n");
539
540 /* walk through each variable and print the callback if it has one */
541 puts("Active callback bindings:\n");
542 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
543 printf("\t%-20s %-20s\n", "-------------", "-------------");
544 hwalk_r(&env_htab, print_active_callback);
545 return 0;
546}
547#endif
548
Joe Hershbergerfffad712012-12-11 22:16:33 -0600549#if defined(CONFIG_CMD_ENV_FLAGS)
Joe Hershbergercca98fd2015-05-20 14:27:19 -0500550static int print_static_flags(const char *var_name, const char *flags,
551 void *priv)
Joe Hershbergerfffad712012-12-11 22:16:33 -0600552{
553 enum env_flags_vartype type = env_flags_parse_vartype(flags);
Joe Hershberger267541f2012-12-11 22:16:34 -0600554 enum env_flags_varaccess access = env_flags_parse_varaccess(flags);
Joe Hershbergerfffad712012-12-11 22:16:33 -0600555
Joe Hershberger267541f2012-12-11 22:16:34 -0600556 printf("\t%-20s %-20s %-20s\n", var_name,
557 env_flags_get_vartype_name(type),
558 env_flags_get_varaccess_name(access));
Joe Hershbergerfffad712012-12-11 22:16:33 -0600559
560 return 0;
561}
562
Simon Glassdd2408c2019-08-02 09:44:18 -0600563static int print_active_flags(struct env_entry *entry)
Joe Hershbergerfffad712012-12-11 22:16:33 -0600564{
565 enum env_flags_vartype type;
Joe Hershberger267541f2012-12-11 22:16:34 -0600566 enum env_flags_varaccess access;
Joe Hershbergerfffad712012-12-11 22:16:33 -0600567
568 if (entry->flags == 0)
569 return 0;
570
571 type = (enum env_flags_vartype)
572 (entry->flags & ENV_FLAGS_VARTYPE_BIN_MASK);
Joe Hershberger267541f2012-12-11 22:16:34 -0600573 access = env_flags_parse_varaccess_from_binflags(entry->flags);
574 printf("\t%-20s %-20s %-20s\n", entry->key,
575 env_flags_get_vartype_name(type),
576 env_flags_get_varaccess_name(access));
Joe Hershbergerfffad712012-12-11 22:16:33 -0600577
578 return 0;
579}
580
581/*
582 * Print the flags available and what variables have flags
583 */
Simon Glass09140112020-05-10 11:40:03 -0600584int do_env_flags(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
Joe Hershbergerfffad712012-12-11 22:16:33 -0600585{
586 /* Print the available variable types */
587 printf("Available variable type flags (position %d):\n",
588 ENV_FLAGS_VARTYPE_LOC);
589 puts("\tFlag\tVariable Type Name\n");
590 puts("\t----\t------------------\n");
591 env_flags_print_vartypes();
592 puts("\n");
593
Joe Hershberger267541f2012-12-11 22:16:34 -0600594 /* Print the available variable access types */
595 printf("Available variable access flags (position %d):\n",
596 ENV_FLAGS_VARACCESS_LOC);
597 puts("\tFlag\tVariable Access Name\n");
598 puts("\t----\t--------------------\n");
599 env_flags_print_varaccess();
600 puts("\n");
601
Joe Hershbergerfffad712012-12-11 22:16:33 -0600602 /* Print the static flags that may exist */
603 puts("Static flags:\n");
Joe Hershberger267541f2012-12-11 22:16:34 -0600604 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
605 "Variable Access");
606 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
607 "---------------");
Joe Hershbergercca98fd2015-05-20 14:27:19 -0500608 env_attr_walk(ENV_FLAGS_LIST_STATIC, print_static_flags, NULL);
Joe Hershbergerfffad712012-12-11 22:16:33 -0600609 puts("\n");
610
611 /* walk through each variable and print the flags if non-default */
612 puts("Active flags:\n");
Joe Hershberger267541f2012-12-11 22:16:34 -0600613 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
614 "Variable Access");
615 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
616 "---------------");
Joe Hershbergerfffad712012-12-11 22:16:33 -0600617 hwalk_r(&env_htab, print_active_flags);
618 return 0;
619}
620#endif
621
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200622/*
Peter Tyser246c6922009-10-25 15:12:56 -0500623 * Interactively edit an environment variable
624 */
625#if defined(CONFIG_CMD_EDITENV)
Simon Glass09140112020-05-10 11:40:03 -0600626static int do_env_edit(struct cmd_tbl *cmdtp, int flag, int argc,
627 char *const argv[])
Peter Tyser246c6922009-10-25 15:12:56 -0500628{
629 char buffer[CONFIG_SYS_CBSIZE];
630 char *init_val;
Peter Tyser246c6922009-10-25 15:12:56 -0500631
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200632 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000633 return CMD_RET_USAGE;
Peter Tyser246c6922009-10-25 15:12:56 -0500634
Joe Hershberger94b467b2015-05-20 14:27:21 -0500635 /* before import into hashtable */
636 if (!(gd->flags & GD_FLG_ENV_READY))
637 return 1;
638
Peter Tyser246c6922009-10-25 15:12:56 -0500639 /* Set read buffer to initial value or empty sting */
Simon Glass00caae62017-08-03 12:22:12 -0600640 init_val = env_get(argv[1]);
Peter Tyser246c6922009-10-25 15:12:56 -0500641 if (init_val)
Peng Fan5d49b4c2015-12-23 12:08:09 +0800642 snprintf(buffer, CONFIG_SYS_CBSIZE, "%s", init_val);
Peter Tyser246c6922009-10-25 15:12:56 -0500643 else
644 buffer[0] = '\0';
645
Simon Glasse1bf8242014-04-10 20:01:27 -0600646 if (cli_readline_into_buffer("edit: ", buffer, 0) < 0)
Joe Hershberger18a3cce2013-02-08 10:12:34 +0000647 return 1;
Peter Tyser246c6922009-10-25 15:12:56 -0500648
Joe Hershberger94b467b2015-05-20 14:27:21 -0500649 if (buffer[0] == '\0') {
650 const char * const _argv[3] = { "setenv", argv[1], NULL };
651
652 return _do_env_set(0, 2, (char * const *)_argv, H_INTERACTIVE);
653 } else {
654 const char * const _argv[4] = { "setenv", argv[1], buffer,
655 NULL };
656
657 return _do_env_set(0, 3, (char * const *)_argv, H_INTERACTIVE);
658 }
Peter Tyser246c6922009-10-25 15:12:56 -0500659}
660#endif /* CONFIG_CMD_EDITENV */
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000661#endif /* CONFIG_SPL_BUILD */
Peter Tyser246c6922009-10-25 15:12:56 -0500662
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200663/*
wdenka68d3ed2002-10-11 08:38:32 +0000664 * Look up variable from environment,
665 * return address of storage for that variable,
666 * or NULL if not found
667 */
Simon Glass00caae62017-08-03 12:22:12 -0600668char *env_get(const char *name)
wdenka68d3ed2002-10-11 08:38:32 +0000669{
Igor Grinbergd09b1782011-11-07 01:13:59 +0000670 if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */
Simon Glassdd2408c2019-08-02 09:44:18 -0600671 struct env_entry e, *ep;
wdenka68d3ed2002-10-11 08:38:32 +0000672
Wolfgang Denk91a76752010-07-24 20:22:02 +0200673 WATCHDOG_RESET();
wdenk2a3cb022002-11-05 21:01:48 +0000674
Igor Grinbergd09b1782011-11-07 01:13:59 +0000675 e.key = name;
676 e.data = NULL;
Simon Glass3f0d6802019-08-01 09:47:09 -0600677 hsearch_r(e, ENV_FIND, &ep, &env_htab, 0);
wdenka68d3ed2002-10-11 08:38:32 +0000678
Macpaul Linf3c615b2011-04-26 16:16:45 +0000679 return ep ? ep->data : NULL;
wdenka68d3ed2002-10-11 08:38:32 +0000680 }
681
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200682 /* restricted capabilities before import */
Simon Glass00caae62017-08-03 12:22:12 -0600683 if (env_get_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0)
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200684 return (char *)(gd->env_buf);
685
686 return NULL;
wdenka68d3ed2002-10-11 08:38:32 +0000687}
688
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200689/*
Patrice Chotard1ac2cb92019-11-25 09:07:36 +0100690 * Like env_get, but prints an error if envvar isn't defined in the
691 * environment. It always returns what env_get does, so it can be used in
692 * place of env_get without changing error handling otherwise.
693 */
694char *from_env(const char *envvar)
695{
696 char *ret;
697
698 ret = env_get(envvar);
699
700 if (!ret)
701 printf("missing environment variable: %s\n", envvar);
702
703 return ret;
704}
705
706/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200707 * Look up variable from environment for restricted C runtime env.
708 */
Simon Glass00caae62017-08-03 12:22:12 -0600709int env_get_f(const char *name, char *buf, unsigned len)
wdenka68d3ed2002-10-11 08:38:32 +0000710{
Simon Goldschmidt87c7fb32018-01-31 07:56:48 +0100711 int i, nxt, c;
wdenka68d3ed2002-10-11 08:38:32 +0000712
Igor Grinbergd09b1782011-11-07 01:13:59 +0000713 for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
wdenka68d3ed2002-10-11 08:38:32 +0000714 int val, n;
715
Simon Goldschmidt87c7fb32018-01-31 07:56:48 +0100716 for (nxt = i; (c = env_get_char(nxt)) != '\0'; ++nxt) {
717 if (c < 0)
718 return c;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000719 if (nxt >= CONFIG_ENV_SIZE)
720 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000721 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000722
Simon Glassb9ca02c2019-08-01 09:46:45 -0600723 val = env_match((uchar *)name, i);
Macpaul Linf3c615b2011-04-26 16:16:45 +0000724 if (val < 0)
wdenka68d3ed2002-10-11 08:38:32 +0000725 continue;
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200726
wdenka68d3ed2002-10-11 08:38:32 +0000727 /* found; copy out */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000728 for (n = 0; n < len; ++n, ++buf) {
Simon Goldschmidt87c7fb32018-01-31 07:56:48 +0100729 c = env_get_char(val++);
730 if (c < 0)
731 return c;
732 *buf = c;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000733 if (*buf == '\0')
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200734 return n;
735 }
736
737 if (n)
738 *--buf = '\0';
739
Heinrich Schuchardt82919512019-01-06 11:52:06 +0100740 printf("env_buf [%u bytes] too small for value of \"%s\"\n",
741 len, name);
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200742
743 return n;
wdenka68d3ed2002-10-11 08:38:32 +0000744 }
Igor Grinbergd09b1782011-11-07 01:13:59 +0000745
Macpaul Linf3c615b2011-04-26 16:16:45 +0000746 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000747}
748
Simon Glass4a9b4132011-10-14 13:25:18 +0000749/**
750 * Decode the integer value of an environment variable and return it.
751 *
Shyam Saini919d25c2018-06-07 19:47:19 +0530752 * @param name Name of environment variable
Simon Glass4a9b4132011-10-14 13:25:18 +0000753 * @param base Number base to use (normally 10, or 16 for hex)
754 * @param default_val Default value to return if the variable is not
755 * found
756 * @return the decoded value, or default_val if not found
757 */
Simon Glassbfebc8c2017-08-03 12:22:13 -0600758ulong env_get_ulong(const char *name, int base, ulong default_val)
Simon Glass4a9b4132011-10-14 13:25:18 +0000759{
760 /*
Simon Glass00caae62017-08-03 12:22:12 -0600761 * We can use env_get() here, even before relocation, since the
Simon Glass4a9b4132011-10-14 13:25:18 +0000762 * environment variable value is an integer and thus short.
763 */
Simon Glass00caae62017-08-03 12:22:12 -0600764 const char *str = env_get(name);
Simon Glass4a9b4132011-10-14 13:25:18 +0000765
766 return str ? simple_strtoul(str, NULL, base) : default_val;
767}
768
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000769#ifndef CONFIG_SPL_BUILD
Patrick Delaunay2643c852019-02-18 10:58:16 +0100770#if defined(CONFIG_CMD_SAVEENV) && defined(ENV_IS_IN_DEVICE)
Simon Glass09140112020-05-10 11:40:03 -0600771static int do_env_save(struct cmd_tbl *cmdtp, int flag, int argc,
772 char *const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000773{
Simon Glass01510092017-08-03 12:22:08 -0600774 return env_save() ? 1 : 0;
wdenka68d3ed2002-10-11 08:38:32 +0000775}
wdenk8bde7f72003-06-27 21:31:46 +0000776
Mike Frysingerba69dc22008-12-30 02:59:25 -0500777U_BOOT_CMD(
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200778 saveenv, 1, 0, do_env_save,
Peter Tyser2fb26042009-01-27 18:03:12 -0600779 "save environment variables to persistent storage",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200780 ""
Mike Frysingerba69dc22008-12-30 02:59:25 -0500781);
Frank Wunderlichcd121bd2019-06-29 11:36:19 +0200782
783#if defined(CONFIG_CMD_ERASEENV)
Simon Glass09140112020-05-10 11:40:03 -0600784static int do_env_erase(struct cmd_tbl *cmdtp, int flag, int argc,
785 char *const argv[])
Frank Wunderlichcd121bd2019-06-29 11:36:19 +0200786{
787 return env_erase() ? 1 : 0;
788}
789
790U_BOOT_CMD(
791 eraseenv, 1, 0, do_env_erase,
792 "erase environment variables from persistent storage",
793 ""
794);
795#endif
wdenka68d3ed2002-10-11 08:38:32 +0000796#endif
Patrick Delaunay0115dd32020-07-28 11:51:20 +0200797
798#if defined(CONFIG_CMD_NVEDIT_LOAD)
799static int do_env_load(struct cmd_tbl *cmdtp, int flag, int argc,
800 char *const argv[])
801{
802 return env_reload() ? 1 : 0;
803}
804#endif
Patrick Delaunaya97d22e2020-07-28 11:51:21 +0200805
806#if defined(CONFIG_CMD_NVEDIT_SELECT)
807static int do_env_select(struct cmd_tbl *cmdtp, int flag, int argc,
808 char *const argv[])
809{
810 return env_select(argv[1]) ? 1 : 0;
811}
812#endif
813
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000814#endif /* CONFIG_SPL_BUILD */
wdenka68d3ed2002-10-11 08:38:32 +0000815
Simon Glassb9ca02c2019-08-01 09:46:45 -0600816int env_match(uchar *s1, int i2)
wdenka68d3ed2002-10-11 08:38:32 +0000817{
Joe Hershberger586197d2012-10-03 09:38:50 +0000818 if (s1 == NULL)
819 return -1;
820
wdenka68d3ed2002-10-11 08:38:32 +0000821 while (*s1 == env_get_char(i2++))
822 if (*s1++ == '=')
Macpaul Linf3c615b2011-04-26 16:16:45 +0000823 return i2;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000824
wdenka68d3ed2002-10-11 08:38:32 +0000825 if (*s1 == '\0' && env_get_char(i2-1) == '=')
Macpaul Linf3c615b2011-04-26 16:16:45 +0000826 return i2;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000827
Macpaul Linf3c615b2011-04-26 16:16:45 +0000828 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000829}
wdenk8bde7f72003-06-27 21:31:46 +0000830
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000831#ifndef CONFIG_SPL_BUILD
Simon Glass09140112020-05-10 11:40:03 -0600832static int do_env_default(struct cmd_tbl *cmdtp, int flag,
833 int argc, char *const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200834{
Yaniv Levinsky5a042642018-06-24 19:16:56 +0300835 int all = 0, env_flag = H_INTERACTIVE;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000836
Gerlando Falautob64b7c32012-08-24 00:11:41 +0000837 debug("Initial value for argc=%d\n", argc);
838 while (--argc > 0 && **++argv == '-') {
839 char *arg = *argv;
840
841 while (*++arg) {
842 switch (*arg) {
843 case 'a': /* default all */
844 all = 1;
845 break;
846 case 'f': /* force */
Yaniv Levinsky30091492018-06-24 19:16:54 +0300847 env_flag |= H_FORCE;
Gerlando Falautob64b7c32012-08-24 00:11:41 +0000848 break;
849 default:
850 return cmd_usage(cmdtp);
851 }
852 }
853 }
854 debug("Final value for argc=%d\n", argc);
855 if (all && (argc == 0)) {
856 /* Reset the whole environment */
Simon Glass0ac7d722019-08-01 09:47:00 -0600857 env_set_default("## Resetting to default environment\n",
Yaniv Levinskyc5d548a2018-06-24 19:16:57 +0300858 env_flag);
Gerlando Falautob64b7c32012-08-24 00:11:41 +0000859 return 0;
860 }
861 if (!all && (argc > 0)) {
862 /* Reset individual variables */
Simon Glass0b9d8a02019-08-01 09:46:56 -0600863 env_set_default_vars(argc, argv, env_flag);
Gerlando Falautob64b7c32012-08-24 00:11:41 +0000864 return 0;
865 }
866
867 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200868}
wdenk8bde7f72003-06-27 21:31:46 +0000869
Simon Glass09140112020-05-10 11:40:03 -0600870static int do_env_delete(struct cmd_tbl *cmdtp, int flag,
871 int argc, char *const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200872{
Joe Hershberger9d8d6612012-12-11 22:16:36 -0600873 int env_flag = H_INTERACTIVE;
874 int ret = 0;
875
876 debug("Initial value for argc=%d\n", argc);
877 while (argc > 1 && **(argv + 1) == '-') {
878 char *arg = *++argv;
879
880 --argc;
881 while (*++arg) {
882 switch (*arg) {
883 case 'f': /* force */
884 env_flag |= H_FORCE;
885 break;
886 default:
887 return CMD_RET_USAGE;
888 }
889 }
890 }
891 debug("Final value for argc=%d\n", argc);
892
893 env_id++;
894
895 while (--argc > 0) {
896 char *name = *++argv;
897
898 if (!hdelete_r(name, &env_htab, env_flag))
899 ret = 1;
900 }
901
902 return ret;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200903}
904
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500905#ifdef CONFIG_CMD_EXPORTENV
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200906/*
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100907 * env export [-t | -b | -c] [-s size] addr [var ...]
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200908 * -t: export as text format; if size is given, data will be
909 * padded with '\0' bytes; if not, one terminating '\0'
910 * will be added (which is included in the "filesize"
911 * setting so you can for exmple copy this to flash and
912 * keep the termination).
913 * -b: export as binary format (name=value pairs separated by
914 * '\0', list end marked by double "\0\0")
915 * -c: export as checksum protected environment format as
916 * used for example by "saveenv" command
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100917 * -s size:
918 * size of output buffer
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200919 * addr: memory address where environment gets stored
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100920 * var... List of variable names that get included into the
921 * export. Without arguments, the whole environment gets
922 * exported.
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200923 *
924 * With "-c" and size is NOT given, then the export command will
925 * format the data as currently used for the persistent storage,
926 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
Robert P. J. Dayfc0b5942016-09-07 14:27:59 -0400927 * prepend a valid CRC32 checksum and, in case of redundant
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200928 * environment, a "current" redundancy flag. If size is given, this
929 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
930 * checksum and redundancy flag will be inserted.
931 *
932 * With "-b" and "-t", always only the real data (including a
933 * terminating '\0' byte) will be written; here the optional size
934 * argument will be used to make sure not to overflow the user
935 * provided buffer; the command will abort if the size is not
Robert P. J. Dayfc0b5942016-09-07 14:27:59 -0400936 * sufficient. Any remaining space will be '\0' padded.
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200937 *
938 * On successful return, the variable "filesize" will be set.
939 * Note that filesize includes the trailing/terminating '\0' byte(s).
940 *
Robert P. J. Dayfc0b5942016-09-07 14:27:59 -0400941 * Usage scenario: create a text snapshot/backup of the current settings:
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200942 *
943 * => env export -t 100000
944 * => era ${backup_addr} +${filesize}
945 * => cp.b 100000 ${backup_addr} ${filesize}
946 *
947 * Re-import this snapshot, deleting all other settings:
948 *
949 * => env import -d -t ${backup_addr}
950 */
Simon Glass09140112020-05-10 11:40:03 -0600951static int do_env_export(struct cmd_tbl *cmdtp, int flag,
952 int argc, char *const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200953{
954 char buf[32];
Simon Glassfd37dac2013-10-25 23:01:31 -0600955 ulong addr;
956 char *ptr, *cmd, *res;
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100957 size_t size = 0;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200958 ssize_t len;
959 env_t *envp;
960 char sep = '\n';
961 int chk = 0;
962 int fmt = 0;
963
964 cmd = *argv;
965
966 while (--argc > 0 && **++argv == '-') {
967 char *arg = *argv;
968 while (*++arg) {
969 switch (*arg) {
970 case 'b': /* raw binary format */
971 if (fmt++)
972 goto sep_err;
973 sep = '\0';
974 break;
975 case 'c': /* external checksum format */
976 if (fmt++)
977 goto sep_err;
978 sep = '\0';
979 chk = 1;
980 break;
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100981 case 's': /* size given */
982 if (--argc <= 0)
983 return cmd_usage(cmdtp);
984 size = simple_strtoul(*++argv, NULL, 16);
985 goto NXTARG;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200986 case 't': /* text format */
987 if (fmt++)
988 goto sep_err;
989 sep = '\n';
990 break;
991 default:
Simon Glass4c12eeb2011-12-10 08:44:01 +0000992 return CMD_RET_USAGE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200993 }
994 }
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100995NXTARG: ;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200996 }
997
Macpaul Linf3c615b2011-04-26 16:16:45 +0000998 if (argc < 1)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000999 return CMD_RET_USAGE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001000
Simon Glassfd37dac2013-10-25 23:01:31 -06001001 addr = simple_strtoul(argv[0], NULL, 16);
1002 ptr = map_sysmem(addr, size);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001003
Wolfgang Denk37f2fe72011-11-06 22:49:44 +01001004 if (size)
Simon Glassfd37dac2013-10-25 23:01:31 -06001005 memset(ptr, '\0', size);
Wolfgang Denk37f2fe72011-11-06 22:49:44 +01001006
1007 argc--;
1008 argv++;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001009
1010 if (sep) { /* export as text file */
Wolfgang Denkea009d42013-03-23 23:50:28 +00001011 len = hexport_r(&env_htab, sep,
1012 H_MATCH_KEY | H_MATCH_IDENT,
Simon Glassfd37dac2013-10-25 23:01:31 -06001013 &ptr, size, argc, argv);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001014 if (len < 0) {
Quentin Schulz6c90f622018-07-09 19:16:25 +02001015 pr_err("## Error: Cannot export environment: errno = %d\n",
1016 errno);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001017 return 1;
1018 }
Andreas Bießmann8c3aff52011-02-09 15:10:29 +01001019 sprintf(buf, "%zX", (size_t)len);
Simon Glass382bee52017-08-03 12:22:09 -06001020 env_set("filesize", buf);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001021
1022 return 0;
1023 }
1024
Simon Glassfd37dac2013-10-25 23:01:31 -06001025 envp = (env_t *)ptr;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001026
1027 if (chk) /* export as checksum protected block */
1028 res = (char *)envp->data;
1029 else /* export as raw binary data */
Simon Glassfd37dac2013-10-25 23:01:31 -06001030 res = ptr;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001031
Wolfgang Denkea009d42013-03-23 23:50:28 +00001032 len = hexport_r(&env_htab, '\0',
1033 H_MATCH_KEY | H_MATCH_IDENT,
1034 &res, ENV_SIZE, argc, argv);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001035 if (len < 0) {
Quentin Schulz6c90f622018-07-09 19:16:25 +02001036 pr_err("## Error: Cannot export environment: errno = %d\n",
1037 errno);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001038 return 1;
1039 }
1040
1041 if (chk) {
Neil Staintond71b0292018-09-12 11:02:51 +00001042 envp->crc = crc32(0, envp->data,
1043 size ? size - offsetof(env_t, data) : ENV_SIZE);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001044#ifdef CONFIG_ENV_ADDR_REDUND
Simon Glassd3716dd2019-08-01 09:47:08 -06001045 envp->flags = ENV_REDUND_ACTIVE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001046#endif
1047 }
Simon Glass018f5302017-08-03 12:22:10 -06001048 env_set_hex("filesize", len + offsetof(env_t, data));
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001049
1050 return 0;
1051
1052sep_err:
Quentin Schulz6c90f622018-07-09 19:16:25 +02001053 printf("## Error: %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
1054 cmd);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001055 return 1;
1056}
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001057#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001058
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001059#ifdef CONFIG_CMD_IMPORTENV
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001060/*
Quentin Schulzeaf73472018-07-09 19:16:29 +02001061 * env import [-d] [-t [-r] | -b | -c] addr [size] [var ...]
1062 * -d: delete existing environment before importing if no var is
1063 * passed; if vars are passed, if one var is in the current
1064 * environment but not in the environment at addr, delete var from
1065 * current environment;
Robert P. J. Dayfc0b5942016-09-07 14:27:59 -04001066 * otherwise overwrite / append to existing definitions
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001067 * -t: assume text format; either "size" must be given or the
1068 * text data must be '\0' terminated
Alexander Hollerecd14462014-07-14 17:49:55 +02001069 * -r: handle CRLF like LF, that means exported variables with
1070 * a content which ends with \r won't get imported. Used
1071 * to import text files created with editors which are using CRLF
1072 * for line endings. Only effective in addition to -t.
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001073 * -b: assume binary format ('\0' separated, "\0\0" terminated)
1074 * -c: assume checksum protected environment format
1075 * addr: memory address to read from
1076 * size: length of input data; if missing, proper '\0'
1077 * termination is mandatory
Quentin Schulzeaf73472018-07-09 19:16:29 +02001078 * if var is set and size should be missing (i.e. '\0'
1079 * termination), set size to '-'
1080 * var... List of the names of the only variables that get imported from
1081 * the environment at address 'addr'. Without arguments, the whole
1082 * environment gets imported.
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001083 */
Simon Glass09140112020-05-10 11:40:03 -06001084static int do_env_import(struct cmd_tbl *cmdtp, int flag,
1085 int argc, char *const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001086{
Simon Glassfd37dac2013-10-25 23:01:31 -06001087 ulong addr;
1088 char *cmd, *ptr;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001089 char sep = '\n';
1090 int chk = 0;
1091 int fmt = 0;
1092 int del = 0;
Alexander Hollerecd14462014-07-14 17:49:55 +02001093 int crlf_is_lf = 0;
Quentin Schulzeaf73472018-07-09 19:16:29 +02001094 int wl = 0;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001095 size_t size;
1096
1097 cmd = *argv;
1098
1099 while (--argc > 0 && **++argv == '-') {
1100 char *arg = *argv;
1101 while (*++arg) {
1102 switch (*arg) {
1103 case 'b': /* raw binary format */
1104 if (fmt++)
1105 goto sep_err;
1106 sep = '\0';
1107 break;
1108 case 'c': /* external checksum format */
1109 if (fmt++)
1110 goto sep_err;
1111 sep = '\0';
1112 chk = 1;
1113 break;
1114 case 't': /* text format */
1115 if (fmt++)
1116 goto sep_err;
1117 sep = '\n';
1118 break;
Alexander Hollerecd14462014-07-14 17:49:55 +02001119 case 'r': /* handle CRLF like LF */
1120 crlf_is_lf = 1;
1121 break;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001122 case 'd':
1123 del = 1;
1124 break;
1125 default:
Simon Glass4c12eeb2011-12-10 08:44:01 +00001126 return CMD_RET_USAGE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001127 }
1128 }
1129 }
1130
Macpaul Linf3c615b2011-04-26 16:16:45 +00001131 if (argc < 1)
Simon Glass4c12eeb2011-12-10 08:44:01 +00001132 return CMD_RET_USAGE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001133
1134 if (!fmt)
1135 printf("## Warning: defaulting to text format\n");
1136
Alexander Hollerecd14462014-07-14 17:49:55 +02001137 if (sep != '\n' && crlf_is_lf )
1138 crlf_is_lf = 0;
1139
Simon Glassfd37dac2013-10-25 23:01:31 -06001140 addr = simple_strtoul(argv[0], NULL, 16);
1141 ptr = map_sysmem(addr, 0);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001142
Quentin Schulzeaf73472018-07-09 19:16:29 +02001143 if (argc >= 2 && strcmp(argv[1], "-")) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001144 size = simple_strtoul(argv[1], NULL, 16);
Quentin Schulzeaf73472018-07-09 19:16:29 +02001145 } else if (chk) {
Tom Rini3775dcd2014-03-04 15:52:35 -05001146 puts("## Error: external checksum format must pass size\n");
1147 return CMD_RET_FAILURE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001148 } else {
Simon Glassfd37dac2013-10-25 23:01:31 -06001149 char *s = ptr;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001150
1151 size = 0;
1152
1153 while (size < MAX_ENV_SIZE) {
1154 if ((*s == sep) && (*(s+1) == '\0'))
1155 break;
1156 ++s;
1157 ++size;
1158 }
1159 if (size == MAX_ENV_SIZE) {
1160 printf("## Warning: Input data exceeds %d bytes"
1161 " - truncated\n", MAX_ENV_SIZE);
1162 }
Horst Kronstorferd3f80c72011-12-16 23:33:10 +00001163 size += 2;
Simon Glass79afc882011-11-04 06:42:36 +00001164 printf("## Info: input data size = %zu = 0x%zX\n", size, size);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001165 }
1166
Quentin Schulzeaf73472018-07-09 19:16:29 +02001167 if (argc > 2)
1168 wl = 1;
1169
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001170 if (chk) {
1171 uint32_t crc;
Simon Glassfd37dac2013-10-25 23:01:31 -06001172 env_t *ep = (env_t *)ptr;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001173
1174 size -= offsetof(env_t, data);
1175 memcpy(&crc, &ep->crc, sizeof(crc));
1176
1177 if (crc32(0, ep->data, size) != crc) {
1178 puts("## Error: bad CRC, import failed\n");
1179 return 1;
1180 }
Simon Glassfd37dac2013-10-25 23:01:31 -06001181 ptr = (char *)ep->data;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001182 }
1183
Quentin Schulzeaf73472018-07-09 19:16:29 +02001184 if (!himport_r(&env_htab, ptr, size, sep, del ? 0 : H_NOCLEAR,
1185 crlf_is_lf, wl ? argc - 2 : 0, wl ? &argv[2] : NULL)) {
Quentin Schulz6c90f622018-07-09 19:16:25 +02001186 pr_err("## Error: Environment import failed: errno = %d\n",
1187 errno);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001188 return 1;
1189 }
1190 gd->flags |= GD_FLG_ENV_READY;
1191
1192 return 0;
1193
1194sep_err:
1195 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
1196 cmd);
1197 return 1;
1198}
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001199#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001200
Leo Ruan8e921202019-05-24 17:20:19 +02001201#if defined(CONFIG_CMD_NVEDIT_INFO)
1202/*
1203 * print_env_info - print environment information
1204 */
1205static int print_env_info(void)
1206{
1207 const char *value;
1208
1209 /* print environment validity value */
1210 switch (gd->env_valid) {
1211 case ENV_INVALID:
1212 value = "invalid";
1213 break;
1214 case ENV_VALID:
1215 value = "valid";
1216 break;
1217 case ENV_REDUND:
1218 value = "redundant";
1219 break;
1220 default:
1221 value = "unknown";
1222 break;
1223 }
1224 printf("env_valid = %s\n", value);
1225
1226 /* print environment ready flag */
1227 value = gd->flags & GD_FLG_ENV_READY ? "true" : "false";
1228 printf("env_ready = %s\n", value);
1229
1230 /* print environment using default flag */
1231 value = gd->flags & GD_FLG_ENV_DEFAULT ? "true" : "false";
1232 printf("env_use_default = %s\n", value);
1233
1234 return CMD_RET_SUCCESS;
1235}
1236
1237#define ENV_INFO_IS_DEFAULT BIT(0) /* default environment bit mask */
1238#define ENV_INFO_IS_PERSISTED BIT(1) /* environment persistence bit mask */
1239
1240/*
1241 * env info - display environment information
1242 * env info [-d] - evaluate whether default environment is used
1243 * env info [-p] - evaluate whether environment can be persisted
Patrick Delaunay6718ebd2020-06-19 14:03:34 +02001244 * Add [-q] - quiet mode, use only for command result, for test by example:
1245 * test env info -p -d -q
Leo Ruan8e921202019-05-24 17:20:19 +02001246 */
Simon Glass09140112020-05-10 11:40:03 -06001247static int do_env_info(struct cmd_tbl *cmdtp, int flag,
1248 int argc, char *const argv[])
Leo Ruan8e921202019-05-24 17:20:19 +02001249{
1250 int eval_flags = 0;
1251 int eval_results = 0;
Patrick Delaunay6718ebd2020-06-19 14:03:34 +02001252 bool quiet = false;
Patrick Delaunay2f96b322020-06-19 14:03:35 +02001253#if defined(CONFIG_CMD_SAVEENV) && defined(ENV_IS_IN_DEVICE)
1254 enum env_location loc;
1255#endif
Leo Ruan8e921202019-05-24 17:20:19 +02001256
1257 /* display environment information */
1258 if (argc <= 1)
1259 return print_env_info();
1260
1261 /* process options */
1262 while (--argc > 0 && **++argv == '-') {
1263 char *arg = *argv;
1264
1265 while (*++arg) {
1266 switch (*arg) {
1267 case 'd':
1268 eval_flags |= ENV_INFO_IS_DEFAULT;
1269 break;
1270 case 'p':
1271 eval_flags |= ENV_INFO_IS_PERSISTED;
1272 break;
Patrick Delaunay6718ebd2020-06-19 14:03:34 +02001273 case 'q':
1274 quiet = true;
1275 break;
Leo Ruan8e921202019-05-24 17:20:19 +02001276 default:
1277 return CMD_RET_USAGE;
1278 }
1279 }
1280 }
1281
1282 /* evaluate whether default environment is used */
1283 if (eval_flags & ENV_INFO_IS_DEFAULT) {
1284 if (gd->flags & GD_FLG_ENV_DEFAULT) {
Patrick Delaunay6718ebd2020-06-19 14:03:34 +02001285 if (!quiet)
1286 printf("Default environment is used\n");
Leo Ruan8e921202019-05-24 17:20:19 +02001287 eval_results |= ENV_INFO_IS_DEFAULT;
1288 } else {
Patrick Delaunay6718ebd2020-06-19 14:03:34 +02001289 if (!quiet)
1290 printf("Environment was loaded from persistent storage\n");
Leo Ruan8e921202019-05-24 17:20:19 +02001291 }
1292 }
1293
1294 /* evaluate whether environment can be persisted */
1295 if (eval_flags & ENV_INFO_IS_PERSISTED) {
Patrick Delaunay8b5206d2020-07-02 17:43:44 +02001296#if defined(CONFIG_CMD_SAVEENV) && defined(ENV_IS_IN_DEVICE)
Patrick Delaunay2f96b322020-06-19 14:03:35 +02001297 loc = env_get_location(ENVOP_SAVE, gd->env_load_prio);
1298 if (ENVL_NOWHERE != loc && ENVL_UNKNOWN != loc) {
1299 if (!quiet)
1300 printf("Environment can be persisted\n");
1301 eval_results |= ENV_INFO_IS_PERSISTED;
1302 } else {
1303 if (!quiet)
1304 printf("Environment cannot be persisted\n");
1305 }
Leo Ruan8e921202019-05-24 17:20:19 +02001306#else
Patrick Delaunay6718ebd2020-06-19 14:03:34 +02001307 if (!quiet)
1308 printf("Environment cannot be persisted\n");
Leo Ruan8e921202019-05-24 17:20:19 +02001309#endif
1310 }
1311
1312 /* The result of evaluations is combined with AND */
1313 if (eval_flags != eval_results)
1314 return CMD_RET_FAILURE;
1315
1316 return CMD_RET_SUCCESS;
1317}
1318#endif
1319
Andrew Ruder88733e22013-10-22 19:07:34 -05001320#if defined(CONFIG_CMD_ENV_EXISTS)
Simon Glass09140112020-05-10 11:40:03 -06001321static int do_env_exists(struct cmd_tbl *cmdtp, int flag, int argc,
1322 char *const argv[])
Andrew Ruder88733e22013-10-22 19:07:34 -05001323{
Simon Glassdd2408c2019-08-02 09:44:18 -06001324 struct env_entry e, *ep;
Andrew Ruder88733e22013-10-22 19:07:34 -05001325
1326 if (argc < 2)
1327 return CMD_RET_USAGE;
1328
1329 e.key = argv[1];
1330 e.data = NULL;
Simon Glass3f0d6802019-08-01 09:47:09 -06001331 hsearch_r(e, ENV_FIND, &ep, &env_htab, 0);
Andrew Ruder88733e22013-10-22 19:07:34 -05001332
1333 return (ep == NULL) ? 1 : 0;
1334}
1335#endif
1336
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001337/*
1338 * New command line interface: "env" command with subcommands
1339 */
Simon Glass09140112020-05-10 11:40:03 -06001340static struct cmd_tbl cmd_env_sub[] = {
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001341#if defined(CONFIG_CMD_ASKENV)
1342 U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""),
1343#endif
1344 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""),
Joe Hershberger9d8d6612012-12-11 22:16:36 -06001345 U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS, 0, do_env_delete, "", ""),
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001346#if defined(CONFIG_CMD_EDITENV)
1347 U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
1348#endif
Joe Hershberger5e2b3e02012-12-11 22:16:25 -06001349#if defined(CONFIG_CMD_ENV_CALLBACK)
1350 U_BOOT_CMD_MKENT(callbacks, 1, 0, do_env_callback, "", ""),
1351#endif
Joe Hershbergerfffad712012-12-11 22:16:33 -06001352#if defined(CONFIG_CMD_ENV_FLAGS)
1353 U_BOOT_CMD_MKENT(flags, 1, 0, do_env_flags, "", ""),
1354#endif
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001355#if defined(CONFIG_CMD_EXPORTENV)
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001356 U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001357#endif
Kim Phillipsa000b792011-04-05 07:15:14 +00001358#if defined(CONFIG_CMD_GREPENV)
1359 U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""),
1360#endif
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001361#if defined(CONFIG_CMD_IMPORTENV)
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001362 U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001363#endif
Leo Ruan8e921202019-05-24 17:20:19 +02001364#if defined(CONFIG_CMD_NVEDIT_INFO)
Patrick Delaunay6718ebd2020-06-19 14:03:34 +02001365 U_BOOT_CMD_MKENT(info, 3, 0, do_env_info, "", ""),
Leo Ruan8e921202019-05-24 17:20:19 +02001366#endif
Patrick Delaunay0115dd32020-07-28 11:51:20 +02001367#if defined(CONFIG_CMD_NVEDIT_LOAD)
1368 U_BOOT_CMD_MKENT(load, 1, 0, do_env_load, "", ""),
1369#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001370 U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
1371#if defined(CONFIG_CMD_RUN)
1372 U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),
1373#endif
Patrick Delaunay2643c852019-02-18 10:58:16 +01001374#if defined(CONFIG_CMD_SAVEENV) && defined(ENV_IS_IN_DEVICE)
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001375 U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""),
Frank Wunderlichcd121bd2019-06-29 11:36:19 +02001376#if defined(CONFIG_CMD_ERASEENV)
1377 U_BOOT_CMD_MKENT(erase, 1, 0, do_env_erase, "", ""),
1378#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001379#endif
Patrick Delaunaya97d22e2020-07-28 11:51:21 +02001380#if defined(CONFIG_CMD_NVEDIT_SELECT)
1381 U_BOOT_CMD_MKENT(select, 2, 0, do_env_select, "", ""),
1382#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001383 U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""),
Andrew Ruder88733e22013-10-22 19:07:34 -05001384#if defined(CONFIG_CMD_ENV_EXISTS)
1385 U_BOOT_CMD_MKENT(exists, 2, 0, do_env_exists, "", ""),
1386#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001387};
1388
Wolfgang Denk2e5167c2010-10-28 20:00:11 +02001389#if defined(CONFIG_NEEDS_MANUAL_RELOC)
Heiko Schocher60f7da12010-10-05 14:17:00 +02001390void env_reloc(void)
1391{
1392 fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1393}
1394#endif
1395
Simon Glass09140112020-05-10 11:40:03 -06001396static int do_env(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001397{
Simon Glass09140112020-05-10 11:40:03 -06001398 struct cmd_tbl *cp;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001399
Thomas Weber5904da02010-11-24 13:07:52 +01001400 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +00001401 return CMD_RET_USAGE;
Thomas Weber5904da02010-11-24 13:07:52 +01001402
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001403 /* drop initial "env" arg */
1404 argc--;
1405 argv++;
1406
1407 cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1408
1409 if (cp)
1410 return cp->cmd(cmdtp, flag, argc, argv);
1411
Simon Glass4c12eeb2011-12-10 08:44:01 +00001412 return CMD_RET_USAGE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001413}
1414
Kim Phillips088f1b12012-10-29 13:34:31 +00001415#ifdef CONFIG_SYS_LONGHELP
1416static char env_help_text[] =
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001417#if defined(CONFIG_CMD_ASKENV)
1418 "ask name [message] [size] - ask for environment variable\nenv "
1419#endif
Joe Hershberger5e2b3e02012-12-11 22:16:25 -06001420#if defined(CONFIG_CMD_ENV_CALLBACK)
1421 "callbacks - print callbacks and their associated variables\nenv "
1422#endif
Gerlando Falautob64b7c32012-08-24 00:11:41 +00001423 "default [-f] -a - [forcibly] reset default environment\n"
1424 "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
Joe Hershberger9d8d6612012-12-11 22:16:36 -06001425 "env delete [-f] var [...] - [forcibly] delete variable(s)\n"
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001426#if defined(CONFIG_CMD_EDITENV)
1427 "env edit name - edit environment variable\n"
1428#endif
Andrew Ruder88733e22013-10-22 19:07:34 -05001429#if defined(CONFIG_CMD_ENV_EXISTS)
1430 "env exists name - tests for existence of variable\n"
1431#endif
Benoît Thébaudeau4796bc42012-08-10 07:45:44 +00001432#if defined(CONFIG_CMD_EXPORTENV)
Wolfgang Denk37f2fe72011-11-06 22:49:44 +01001433 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
Benoît Thébaudeau4796bc42012-08-10 07:45:44 +00001434#endif
Joe Hershbergerfffad712012-12-11 22:16:33 -06001435#if defined(CONFIG_CMD_ENV_FLAGS)
1436 "env flags - print variables that have non-default flags\n"
1437#endif
Kim Phillipsa000b792011-04-05 07:15:14 +00001438#if defined(CONFIG_CMD_GREPENV)
Wolfgang Denkbe29df62013-03-23 23:50:32 +00001439#ifdef CONFIG_REGEX
1440 "env grep [-e] [-n | -v | -b] string [...] - search environment\n"
1441#else
Wolfgang Denkd87244d2013-03-23 23:50:30 +00001442 "env grep [-n | -v | -b] string [...] - search environment\n"
Kim Phillipsa000b792011-04-05 07:15:14 +00001443#endif
Wolfgang Denkbe29df62013-03-23 23:50:32 +00001444#endif
Benoît Thébaudeau4796bc42012-08-10 07:45:44 +00001445#if defined(CONFIG_CMD_IMPORTENV)
Quentin Schulzeaf73472018-07-09 19:16:29 +02001446 "env import [-d] [-t [-r] | -b | -c] addr [size] [var ...] - import environment\n"
Benoît Thébaudeau4796bc42012-08-10 07:45:44 +00001447#endif
Leo Ruan8e921202019-05-24 17:20:19 +02001448#if defined(CONFIG_CMD_NVEDIT_INFO)
1449 "env info - display environment information\n"
Patrick Delaunay6718ebd2020-06-19 14:03:34 +02001450 "env info [-d] [-p] [-q] - evaluate environment information\n"
1451 " \"-d\": default environment is used\n"
1452 " \"-p\": environment can be persisted\n"
1453 " \"-q\": quiet output\n"
Leo Ruan8e921202019-05-24 17:20:19 +02001454#endif
Joe Hershbergerbe112352012-12-11 22:16:23 -06001455 "env print [-a | name ...] - print environment\n"
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001456#if defined(CONFIG_CMD_NVEDIT_EFI)
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +02001457 "env print -e [-guid guid] [-n] [name ...] - print UEFI environment\n"
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001458#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001459#if defined(CONFIG_CMD_RUN)
1460 "env run var [...] - run commands in an environment variable\n"
1461#endif
Patrick Delaunay2643c852019-02-18 10:58:16 +01001462#if defined(CONFIG_CMD_SAVEENV) && defined(ENV_IS_IN_DEVICE)
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001463 "env save - save environment\n"
Frank Wunderlichcd121bd2019-06-29 11:36:19 +02001464#if defined(CONFIG_CMD_ERASEENV)
1465 "env erase - erase environment\n"
1466#endif
Horst Kronstorferd798a9b2011-12-10 02:25:19 +00001467#endif
Patrick Delaunay0115dd32020-07-28 11:51:20 +02001468#if defined(CONFIG_CMD_NVEDIT_LOAD)
1469 "env load - load environment\n"
1470#endif
Patrick Delaunaya97d22e2020-07-28 11:51:21 +02001471#if defined(CONFIG_CMD_NVEDIT_SELECT)
1472 "env select [target] - select environment target\n"
1473#endif
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001474#if defined(CONFIG_CMD_NVEDIT_EFI)
AKASHI Takahiroe50e2872020-04-14 11:51:47 +09001475 "env set -e [-nv][-bs][-rt][-at][-a][-i addr,size][-v] name [arg ...]\n"
AKASHI Takahiro051aa892019-10-24 15:17:13 +09001476 " - set UEFI variable; unset if '-i' or 'arg' not specified\n"
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001477#endif
Kim Phillips088f1b12012-10-29 13:34:31 +00001478 "env set [-f] name [arg ...]\n";
1479#endif
1480
1481U_BOOT_CMD(
1482 env, CONFIG_SYS_MAXARGS, 1, do_env,
1483 "environment handling commands", env_help_text
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001484);
1485
1486/*
1487 * Old command line interface, kept for compatibility
1488 */
wdenk8bde7f72003-06-27 21:31:46 +00001489
Peter Tyser246c6922009-10-25 15:12:56 -05001490#if defined(CONFIG_CMD_EDITENV)
Mike Frysinger722b0612010-10-20 03:52:39 -04001491U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001492 editenv, 2, 0, do_env_edit,
Peter Tyser246c6922009-10-25 15:12:56 -05001493 "edit environment variable",
1494 "name\n"
Mike Frysinger722b0612010-10-20 03:52:39 -04001495 " - edit environment variable 'name'",
1496 var_complete
Peter Tyser246c6922009-10-25 15:12:56 -05001497);
1498#endif
1499
Mike Frysinger722b0612010-10-20 03:52:39 -04001500U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001501 printenv, CONFIG_SYS_MAXARGS, 1, do_env_print,
Peter Tyser2fb26042009-01-27 18:03:12 -06001502 "print environment variables",
Joe Hershbergerbe112352012-12-11 22:16:23 -06001503 "[-a]\n - print [all] values of all environment variables\n"
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001504#if defined(CONFIG_CMD_NVEDIT_EFI)
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +02001505 "printenv -e [-guid guid][-n] [name ...]\n"
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001506 " - print UEFI variable 'name' or all the variables\n"
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +02001507 " \"-guid\": GUID xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx\n"
AKASHI Takahiro051aa892019-10-24 15:17:13 +09001508 " \"-n\": suppress dumping variable's value\n"
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001509#endif
wdenk8bde7f72003-06-27 21:31:46 +00001510 "printenv name ...\n"
Mike Frysinger722b0612010-10-20 03:52:39 -04001511 " - print value of environment variable 'name'",
1512 var_complete
wdenk8bde7f72003-06-27 21:31:46 +00001513);
1514
Kim Phillipsa000b792011-04-05 07:15:14 +00001515#ifdef CONFIG_CMD_GREPENV
1516U_BOOT_CMD_COMPLETE(
1517 grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep,
1518 "search environment variables",
Wolfgang Denkbe29df62013-03-23 23:50:32 +00001519#ifdef CONFIG_REGEX
1520 "[-e] [-n | -v | -b] string ...\n"
1521#else
Wolfgang Denkd87244d2013-03-23 23:50:30 +00001522 "[-n | -v | -b] string ...\n"
Wolfgang Denkbe29df62013-03-23 23:50:32 +00001523#endif
Wolfgang Denkd87244d2013-03-23 23:50:30 +00001524 " - list environment name=value pairs matching 'string'\n"
Wolfgang Denkbe29df62013-03-23 23:50:32 +00001525#ifdef CONFIG_REGEX
1526 " \"-e\": enable regular expressions;\n"
1527#endif
Wolfgang Denkd87244d2013-03-23 23:50:30 +00001528 " \"-n\": search variable names; \"-v\": search values;\n"
1529 " \"-b\": search both names and values (default)",
Kim Phillipsa000b792011-04-05 07:15:14 +00001530 var_complete
1531);
1532#endif
1533
Mike Frysinger722b0612010-10-20 03:52:39 -04001534U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001535 setenv, CONFIG_SYS_MAXARGS, 0, do_env_set,
Peter Tyser2fb26042009-01-27 18:03:12 -06001536 "set environment variables",
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001537#if defined(CONFIG_CMD_NVEDIT_EFI)
AKASHI Takahiroe50e2872020-04-14 11:51:47 +09001538 "-e [-guid guid][-nv][-bs][-rt][-at][-a][-v]\n"
AKASHI Takahiro051aa892019-10-24 15:17:13 +09001539 " [-i addr,size name], or [name [value ...]]\n"
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001540 " - set UEFI variable 'name' to 'value' ...'\n"
Heinrich Schuchardtc70f4482020-07-15 18:00:56 +02001541 " \"-guid\": GUID xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx\n"
AKASHI Takahiro051aa892019-10-24 15:17:13 +09001542 " \"-nv\": set non-volatile attribute\n"
1543 " \"-bs\": set boot-service attribute\n"
1544 " \"-rt\": set runtime attribute\n"
AKASHI Takahiroe50e2872020-04-14 11:51:47 +09001545 " \"-at\": set time-based authentication attribute\n"
AKASHI Takahiro051aa892019-10-24 15:17:13 +09001546 " \"-a\": append-write\n"
1547 " \"-i addr,size\": use <addr,size> as variable's value\n"
1548 " \"-v\": verbose message\n"
AKASHI Takahiro49d81fd2019-02-25 15:54:36 +09001549 " - delete UEFI variable 'name' if 'value' not specified\n"
1550#endif
1551 "setenv [-f] name value ...\n"
Joe Hershberger24ab5a12012-12-11 22:16:35 -06001552 " - [forcibly] set environment variable 'name' to 'value ...'\n"
1553 "setenv [-f] name\n"
1554 " - [forcibly] delete environment variable 'name'",
Mike Frysinger722b0612010-10-20 03:52:39 -04001555 var_complete
wdenk8bde7f72003-06-27 21:31:46 +00001556);
1557
Jon Loeligerc76fe472007-07-08 18:02:23 -05001558#if defined(CONFIG_CMD_ASKENV)
wdenk8bde7f72003-06-27 21:31:46 +00001559
wdenk0d498392003-07-01 21:06:45 +00001560U_BOOT_CMD(
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001561 askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask,
Peter Tyser2fb26042009-01-27 18:03:12 -06001562 "get environment variables from stdin",
wdenk8bde7f72003-06-27 21:31:46 +00001563 "name [message] [size]\n"
Wolfgang Denk7d855912013-02-20 04:53:16 +00001564 " - get environment variable 'name' from stdin (max 'size' chars)"
wdenk8bde7f72003-06-27 21:31:46 +00001565);
Jon Loeliger90253172007-07-10 11:02:44 -05001566#endif
wdenk8bde7f72003-06-27 21:31:46 +00001567
Jon Loeligerc76fe472007-07-08 18:02:23 -05001568#if defined(CONFIG_CMD_RUN)
Mike Frysinger722b0612010-10-20 03:52:39 -04001569U_BOOT_CMD_COMPLETE(
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001570 run, CONFIG_SYS_MAXARGS, 1, do_run,
Peter Tyser2fb26042009-01-27 18:03:12 -06001571 "run commands in an environment variable",
wdenk8bde7f72003-06-27 21:31:46 +00001572 "var [...]\n"
Mike Frysinger722b0612010-10-20 03:52:39 -04001573 " - run the commands in the environment variable(s) 'var'",
1574 var_complete
wdenk8bde7f72003-06-27 21:31:46 +00001575);
Jon Loeliger90253172007-07-10 11:02:44 -05001576#endif
Ilya Yanok7ac2fe22012-09-18 00:22:50 +00001577#endif /* CONFIG_SPL_BUILD */