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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>
wdenka68d3ed2002-10-11 08:38:32 +000030#include <environment.h>
Wolfgang Denkea882ba2010-06-20 23:33:59 +020031#include <search.h>
32#include <errno.h>
Peter Tyser246c6922009-10-25 15:12:56 -050033#include <malloc.h>
Joe Hershberger0eb25b62015-03-22 17:08:59 -050034#include <mapmem.h>
wdenk2a3cb022002-11-05 21:01:48 +000035#include <watchdog.h>
wdenka68d3ed2002-10-11 08:38:32 +000036#include <linux/stddef.h>
37#include <asm/byteorder.h>
Simon Glassfd37dac2013-10-25 23:01:31 -060038#include <asm/io.h>
wdenka68d3ed2002-10-11 08:38:32 +000039
Wolfgang Denkd87080b2006-03-31 18:32:53 +020040DECLARE_GLOBAL_DATA_PTR;
41
Macpaul Linf3c615b2011-04-26 16:16:45 +000042#if !defined(CONFIG_ENV_IS_IN_EEPROM) && \
43 !defined(CONFIG_ENV_IS_IN_FLASH) && \
Macpaul Linf3c615b2011-04-26 16:16:45 +000044 !defined(CONFIG_ENV_IS_IN_MMC) && \
Maximilian Schwerin57210c72012-03-12 23:57:50 +000045 !defined(CONFIG_ENV_IS_IN_FAT) && \
Stuart Longlandfd1000b2016-02-23 15:51:26 +100046 !defined(CONFIG_ENV_IS_IN_EXT4) && \
Macpaul Linf3c615b2011-04-26 16:16:45 +000047 !defined(CONFIG_ENV_IS_IN_NAND) && \
48 !defined(CONFIG_ENV_IS_IN_NVRAM) && \
49 !defined(CONFIG_ENV_IS_IN_ONENAND) && \
Peng Fan125d1932016-04-03 21:52:13 +080050 !defined(CONFIG_ENV_IS_IN_SATA) && \
Macpaul Linf3c615b2011-04-26 16:16:45 +000051 !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \
Liu Gang0a85a9e2012-03-08 00:33:20 +000052 !defined(CONFIG_ENV_IS_IN_REMOTE) && \
Joe Hershberger2b744332013-04-08 10:32:51 +000053 !defined(CONFIG_ENV_IS_IN_UBI) && \
Macpaul Linf3c615b2011-04-26 16:16:45 +000054 !defined(CONFIG_ENV_IS_NOWHERE)
Tuomas Tynkkynen7b7341d2017-10-10 21:59:40 +030055# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|MMC|FAT|EXT4|\
Lothar Waßmannd1b88cd2017-06-08 14:16:14 +020056NAND|NVRAM|ONENAND|SATA|SPI_FLASH|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE
wdenka68d3ed2002-10-11 08:38:32 +000057#endif
58
Wolfgang Denkea882ba2010-06-20 23:33:59 +020059/*
60 * Maximum expected input data size for import command
61 */
62#define MAX_ENV_SIZE (1 << 20) /* 1 MiB */
wdenka68d3ed2002-10-11 08:38:32 +000063
wdenka68d3ed2002-10-11 08:38:32 +000064/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +020065 * This variable is incremented on each do_env_set(), so it can
Heiko Schocherda954272009-04-28 08:36:11 +020066 * be used via get_env_id() as an indication, if the environment
67 * has changed or not. So it is possible to reread an environment
68 * variable only if the environment was changed ... done so for
69 * example in NetInitLoop()
70 */
Heiko Schocher2f70c492009-02-10 09:38:52 +010071static int env_id = 1;
wdenka68d3ed2002-10-11 08:38:32 +000072
Macpaul Linf3c615b2011-04-26 16:16:45 +000073int get_env_id(void)
Heiko Schocher2f70c492009-02-10 09:38:52 +010074{
75 return env_id;
76}
wdenka68d3ed2002-10-11 08:38:32 +000077
Ilya Yanok7ac2fe22012-09-18 00:22:50 +000078#ifndef CONFIG_SPL_BUILD
Mike Frysinger4c94f6c2009-05-24 02:26:19 -040079/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +020080 * Command interface: print one or all environment variables
81 *
82 * Returns 0 in case of error, or length of printed string
Mike Frysinger4c94f6c2009-05-24 02:26:19 -040083 */
Joe Hershbergerbe112352012-12-11 22:16:23 -060084static int env_print(char *name, int flag)
wdenka68d3ed2002-10-11 08:38:32 +000085{
Wolfgang Denkea882ba2010-06-20 23:33:59 +020086 char *res = NULL;
Maxime Larocque22a4a6c2012-09-28 05:00:13 +000087 ssize_t len;
wdenka68d3ed2002-10-11 08:38:32 +000088
Wolfgang Denkea882ba2010-06-20 23:33:59 +020089 if (name) { /* print a single name */
90 ENTRY e, *ep;
wdenka68d3ed2002-10-11 08:38:32 +000091
Wolfgang Denkea882ba2010-06-20 23:33:59 +020092 e.key = name;
93 e.data = NULL;
Joe Hershbergerbe112352012-12-11 22:16:23 -060094 hsearch_r(e, FIND, &ep, &env_htab, flag);
Wolfgang Denkea882ba2010-06-20 23:33:59 +020095 if (ep == NULL)
96 return 0;
Macpaul Linf3c615b2011-04-26 16:16:45 +000097 len = printf("%s=%s\n", ep->key, ep->data);
Wolfgang Denkea882ba2010-06-20 23:33:59 +020098 return len;
Mike Frysinger4c94f6c2009-05-24 02:26:19 -040099 }
wdenka68d3ed2002-10-11 08:38:32 +0000100
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200101 /* print whole list */
Joe Hershbergerbe112352012-12-11 22:16:23 -0600102 len = hexport_r(&env_htab, '\n', flag, &res, 0, 0, NULL);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200103
104 if (len > 0) {
105 puts(res);
106 free(res);
107 return len;
108 }
109
110 /* should never happen */
Maxime Larocque22a4a6c2012-09-28 05:00:13 +0000111 printf("## Error: cannot export environment\n");
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200112 return 0;
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400113}
114
Kim Phillips088f1b12012-10-29 13:34:31 +0000115static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc,
116 char * const argv[])
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400117{
118 int i;
119 int rcode = 0;
Joe Hershbergerbe112352012-12-11 22:16:23 -0600120 int env_flag = H_HIDE_DOT;
121
122 if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') {
123 argc--;
124 argv++;
125 env_flag &= ~H_HIDE_DOT;
126 }
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400127
128 if (argc == 1) {
129 /* print all env vars */
Joe Hershbergerbe112352012-12-11 22:16:23 -0600130 rcode = env_print(NULL, env_flag);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200131 if (!rcode)
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400132 return 1;
133 printf("\nEnvironment size: %d/%ld bytes\n",
134 rcode, (ulong)ENV_SIZE);
wdenka68d3ed2002-10-11 08:38:32 +0000135 return 0;
136 }
137
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400138 /* print selected env vars */
Joe Hershbergerbe112352012-12-11 22:16:23 -0600139 env_flag &= ~H_HIDE_DOT;
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400140 for (i = 1; i < argc; ++i) {
Joe Hershbergerbe112352012-12-11 22:16:23 -0600141 int rc = env_print(argv[i], env_flag);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200142 if (!rc) {
143 printf("## Error: \"%s\" not defined\n", argv[i]);
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400144 ++rcode;
wdenka68d3ed2002-10-11 08:38:32 +0000145 }
146 }
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400147
wdenka68d3ed2002-10-11 08:38:32 +0000148 return rcode;
149}
150
Kim Phillipsa000b792011-04-05 07:15:14 +0000151#ifdef CONFIG_CMD_GREPENV
Igor Grinbergd09b1782011-11-07 01:13:59 +0000152static int do_env_grep(cmd_tbl_t *cmdtp, int flag,
153 int argc, char * const argv[])
Kim Phillipsa000b792011-04-05 07:15:14 +0000154{
Wolfgang Denk5a31ea02013-03-23 23:50:29 +0000155 char *res = NULL;
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000156 int len, grep_how, grep_what;
Kim Phillipsa000b792011-04-05 07:15:14 +0000157
158 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000159 return CMD_RET_USAGE;
Kim Phillipsa000b792011-04-05 07:15:14 +0000160
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000161 grep_how = H_MATCH_SUBSTR; /* default: substring search */
162 grep_what = H_MATCH_BOTH; /* default: grep names and values */
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000163
Pierre Aubert9a832332013-10-08 14:20:27 +0200164 while (--argc > 0 && **++argv == '-') {
165 char *arg = *argv;
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000166 while (*++arg) {
167 switch (*arg) {
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000168#ifdef CONFIG_REGEX
169 case 'e': /* use regex matching */
170 grep_how = H_MATCH_REGEX;
171 break;
172#endif
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000173 case 'n': /* grep for name */
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000174 grep_what = H_MATCH_KEY;
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000175 break;
176 case 'v': /* grep for value */
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000177 grep_what = H_MATCH_DATA;
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000178 break;
179 case 'b': /* grep for both */
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000180 grep_what = H_MATCH_BOTH;
Wolfgang Denkd87244d2013-03-23 23:50:30 +0000181 break;
182 case '-':
183 goto DONE;
184 default:
185 return CMD_RET_USAGE;
186 }
187 }
188 }
189
190DONE:
Wolfgang Denk5a31ea02013-03-23 23:50:29 +0000191 len = hexport_r(&env_htab, '\n',
Wolfgang Denkbe29df62013-03-23 23:50:32 +0000192 flag | grep_what | grep_how,
Wolfgang Denk5a31ea02013-03-23 23:50:29 +0000193 &res, 0, argc, argv);
Kim Phillipsa000b792011-04-05 07:15:14 +0000194
Wolfgang Denk5a31ea02013-03-23 23:50:29 +0000195 if (len > 0) {
196 puts(res);
197 free(res);
Kim Phillipsa000b792011-04-05 07:15:14 +0000198 }
199
Wolfgang Denk5a31ea02013-03-23 23:50:29 +0000200 if (len < 2)
201 return 1;
202
203 return 0;
Kim Phillipsa000b792011-04-05 07:15:14 +0000204}
205#endif
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000206#endif /* CONFIG_SPL_BUILD */
Kim Phillipsa000b792011-04-05 07:15:14 +0000207
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200208/*
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000209 * Set a new environment variable,
210 * or replace or delete an existing one.
Joe Hershberger25980902012-12-11 22:16:31 -0600211 */
Joe Hershberger94b467b2015-05-20 14:27:21 -0500212static int _do_env_set(int flag, int argc, char * const argv[], int env_flag)
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000213{
214 int i, len;
215 char *name, *value, *s;
216 ENTRY e, *ep;
217
Joe Hershberger24ab5a12012-12-11 22:16:35 -0600218 debug("Initial value for argc=%d\n", argc);
219 while (argc > 1 && **(argv + 1) == '-') {
220 char *arg = *++argv;
221
222 --argc;
223 while (*++arg) {
224 switch (*arg) {
225 case 'f': /* force */
226 env_flag |= H_FORCE;
227 break;
228 default:
229 return CMD_RET_USAGE;
230 }
231 }
232 }
233 debug("Final value for argc=%d\n", argc);
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000234 name = argv[1];
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000235
236 if (strchr(name, '=')) {
237 printf("## Error: illegal character '='"
238 "in variable name \"%s\"\n", name);
239 return 1;
240 }
241
242 env_id++;
Gerlando Falautoc3f65252012-08-24 00:11:37 +0000243
wdenka68d3ed2002-10-11 08:38:32 +0000244 /* Delete only ? */
Igor Grinbergd09b1782011-11-07 01:13:59 +0000245 if (argc < 3 || argv[2] == NULL) {
Joe Hershberger24ab5a12012-12-11 22:16:35 -0600246 int rc = hdelete_r(name, &env_htab, env_flag);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200247 return !rc;
wdenka68d3ed2002-10-11 08:38:32 +0000248 }
249
250 /*
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200251 * Insert / replace new value
wdenka68d3ed2002-10-11 08:38:32 +0000252 */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000253 for (i = 2, len = 0; i < argc; ++i)
wdenka68d3ed2002-10-11 08:38:32 +0000254 len += strlen(argv[i]) + 1;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000255
256 value = malloc(len);
257 if (value == NULL) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200258 printf("## Can't malloc %d bytes\n", len);
wdenka68d3ed2002-10-11 08:38:32 +0000259 return 1;
260 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000261 for (i = 2, s = value; i < argc; ++i) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200262 char *v = argv[i];
wdenka68d3ed2002-10-11 08:38:32 +0000263
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200264 while ((*s++ = *v++) != '\0')
wdenka68d3ed2002-10-11 08:38:32 +0000265 ;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000266 *(s - 1) = ' ';
wdenka68d3ed2002-10-11 08:38:32 +0000267 }
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200268 if (s != value)
269 *--s = '\0';
wdenka68d3ed2002-10-11 08:38:32 +0000270
Igor Grinbergd09b1782011-11-07 01:13:59 +0000271 e.key = name;
272 e.data = value;
Joe Hershberger24ab5a12012-12-11 22:16:35 -0600273 hsearch_r(e, ENTER, &ep, &env_htab, env_flag);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200274 free(value);
275 if (!ep) {
276 printf("## Error inserting \"%s\" variable, errno=%d\n",
277 name, errno);
278 return 1;
279 }
wdenka68d3ed2002-10-11 08:38:32 +0000280
wdenka68d3ed2002-10-11 08:38:32 +0000281 return 0;
282}
283
Simon Glass382bee52017-08-03 12:22:09 -0600284int env_set(const char *varname, const char *varvalue)
wdenka68d3ed2002-10-11 08:38:32 +0000285{
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200286 const char * const argv[4] = { "setenv", varname, varvalue, NULL };
287
Joe Hershbergera7eb1d62013-04-08 10:32:50 +0000288 /* before import into hashtable */
289 if (!(gd->flags & GD_FLG_ENV_READY))
290 return 1;
291
Igor Grinbergd09b1782011-11-07 01:13:59 +0000292 if (varvalue == NULL || varvalue[0] == '\0')
Joe Hershberger94b467b2015-05-20 14:27:21 -0500293 return _do_env_set(0, 2, (char * const *)argv, H_PROGRAMMATIC);
Jeffrey Mann9ffd4512007-04-23 14:00:11 +0200294 else
Joe Hershberger94b467b2015-05-20 14:27:21 -0500295 return _do_env_set(0, 3, (char * const *)argv, H_PROGRAMMATIC);
wdenka68d3ed2002-10-11 08:38:32 +0000296}
297
Simon Glassd67f10c2011-10-24 17:59:59 +0000298/**
299 * Set an environment variable to an integer value
300 *
Simon Glass96022862013-05-07 06:11:45 +0000301 * @param varname Environment variable to set
Simon Glassd67f10c2011-10-24 17:59:59 +0000302 * @param value Value to set it to
303 * @return 0 if ok, 1 on error
304 */
Simon Glass018f5302017-08-03 12:22:10 -0600305int env_set_ulong(const char *varname, ulong value)
Simon Glassd67f10c2011-10-24 17:59:59 +0000306{
307 /* TODO: this should be unsigned */
308 char *str = simple_itoa(value);
309
Simon Glass382bee52017-08-03 12:22:09 -0600310 return env_set(varname, str);
Simon Glassd67f10c2011-10-24 17:59:59 +0000311}
312
313/**
Simon Glassbfc59962013-02-24 17:33:21 +0000314 * Set an environment variable to an value in hex
Simon Glassd67f10c2011-10-24 17:59:59 +0000315 *
Simon Glass96022862013-05-07 06:11:45 +0000316 * @param varname Environment variable to set
Simon Glassbfc59962013-02-24 17:33:21 +0000317 * @param value Value to set it to
Simon Glassd67f10c2011-10-24 17:59:59 +0000318 * @return 0 if ok, 1 on error
319 */
Simon Glass018f5302017-08-03 12:22:10 -0600320int env_set_hex(const char *varname, ulong value)
Simon Glassd67f10c2011-10-24 17:59:59 +0000321{
322 char str[17];
323
Simon Glassbfc59962013-02-24 17:33:21 +0000324 sprintf(str, "%lx", value);
Simon Glass382bee52017-08-03 12:22:09 -0600325 return env_set(varname, str);
Simon Glassd67f10c2011-10-24 17:59:59 +0000326}
327
Simon Glassbfebc8c2017-08-03 12:22:13 -0600328ulong env_get_hex(const char *varname, ulong default_val)
Simon Glass76b8f792013-04-20 08:42:43 +0000329{
330 const char *s;
331 ulong value;
332 char *endp;
333
Simon Glass00caae62017-08-03 12:22:12 -0600334 s = env_get(varname);
Simon Glass76b8f792013-04-20 08:42:43 +0000335 if (s)
336 value = simple_strtoul(s, &endp, 16);
337 if (!s || endp == s)
338 return default_val;
339
340 return value;
341}
342
Alex Kiernan9925f1d2018-04-01 09:22:38 +0000343void eth_parse_enetaddr(const char *addr, uint8_t *enetaddr)
344{
345 char *end;
346 int i;
347
348 for (i = 0; i < 6; ++i) {
349 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
350 if (addr)
351 addr = (*end) ? end + 1 : end;
352 }
353}
354
355int eth_env_get_enetaddr(const char *name, uint8_t *enetaddr)
356{
357 eth_parse_enetaddr(env_get(name), enetaddr);
358 return is_valid_ethaddr(enetaddr);
359}
360
361int eth_env_set_enetaddr(const char *name, const uint8_t *enetaddr)
362{
363 char buf[ARP_HLEN_ASCII + 1];
364
365 if (eth_env_get_enetaddr(name, (uint8_t *)buf))
366 return -EEXIST;
367
368 sprintf(buf, "%pM", enetaddr);
369
370 return env_set(name, buf);
371}
372
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000373#ifndef CONFIG_SPL_BUILD
Kim Phillips088f1b12012-10-29 13:34:31 +0000374static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000375{
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200376 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000377 return CMD_RET_USAGE;
wdenka68d3ed2002-10-11 08:38:32 +0000378
Joe Hershberger94b467b2015-05-20 14:27:21 -0500379 return _do_env_set(flag, argc, argv, H_INTERACTIVE);
wdenka68d3ed2002-10-11 08:38:32 +0000380}
381
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200382/*
wdenka68d3ed2002-10-11 08:38:32 +0000383 * Prompt for environment variable
384 */
Jon Loeligerc76fe472007-07-08 18:02:23 -0500385#if defined(CONFIG_CMD_ASKENV)
Macpaul Linf3c615b2011-04-26 16:16:45 +0000386int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000387{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200388 char message[CONFIG_SYS_CBSIZE];
Wolfgang Denk7d855912013-02-20 04:53:16 +0000389 int i, len, pos, size;
wdenka68d3ed2002-10-11 08:38:32 +0000390 char *local_args[4];
Wolfgang Denk7d855912013-02-20 04:53:16 +0000391 char *endptr;
wdenka68d3ed2002-10-11 08:38:32 +0000392
393 local_args[0] = argv[0];
394 local_args[1] = argv[1];
395 local_args[2] = NULL;
396 local_args[3] = NULL;
397
Wolfgang Denk7d855912013-02-20 04:53:16 +0000398 /*
399 * Check the syntax:
400 *
401 * env_ask envname [message1 ...] [size]
402 */
403 if (argc == 1)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000404 return CMD_RET_USAGE;
wdenka68d3ed2002-10-11 08:38:32 +0000405
Wolfgang Denk7d855912013-02-20 04:53:16 +0000406 /*
407 * We test the last argument if it can be converted
408 * into a decimal number. If yes, we assume it's
409 * the size. Otherwise we echo it as part of the
410 * message.
411 */
412 i = simple_strtoul(argv[argc - 1], &endptr, 10);
413 if (*endptr != '\0') { /* no size */
414 size = CONFIG_SYS_CBSIZE - 1;
415 } else { /* size given */
416 size = i;
417 --argc;
418 }
wdenka68d3ed2002-10-11 08:38:32 +0000419
Wolfgang Denk7d855912013-02-20 04:53:16 +0000420 if (argc <= 2) {
421 sprintf(message, "Please enter '%s': ", argv[1]);
422 } else {
423 /* env_ask envname message1 ... messagen [size] */
Tom Rinibf52fcd2017-10-07 11:27:59 -0400424 for (i = 2, pos = 0; i < argc && pos+1 < sizeof(message); i++) {
Macpaul Linf3c615b2011-04-26 16:16:45 +0000425 if (pos)
wdenka68d3ed2002-10-11 08:38:32 +0000426 message[pos++] = ' ';
Macpaul Linf3c615b2011-04-26 16:16:45 +0000427
Tom Rinic6677232017-09-26 19:37:11 -0400428 strncpy(message + pos, argv[i], sizeof(message) - pos);
wdenka68d3ed2002-10-11 08:38:32 +0000429 pos += strlen(argv[i]);
430 }
Tom Rinic6677232017-09-26 19:37:11 -0400431 if (pos < sizeof(message) - 1) {
432 message[pos++] = ' ';
433 message[pos] = '\0';
434 } else
435 message[CONFIG_SYS_CBSIZE - 1] = '\0';
wdenka68d3ed2002-10-11 08:38:32 +0000436 }
437
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200438 if (size >= CONFIG_SYS_CBSIZE)
439 size = CONFIG_SYS_CBSIZE - 1;
wdenka68d3ed2002-10-11 08:38:32 +0000440
441 if (size <= 0)
442 return 1;
443
444 /* prompt for input */
Simon Glasse1bf8242014-04-10 20:01:27 -0600445 len = cli_readline(message);
wdenka68d3ed2002-10-11 08:38:32 +0000446
447 if (size < len)
448 console_buffer[size] = '\0';
449
450 len = 2;
451 if (console_buffer[0] != '\0') {
452 local_args[2] = console_buffer;
453 len = 3;
454 }
455
456 /* Continue calling setenv code */
Joe Hershberger94b467b2015-05-20 14:27:21 -0500457 return _do_env_set(flag, len, local_args, H_INTERACTIVE);
wdenka68d3ed2002-10-11 08:38:32 +0000458}
Jon Loeliger90253172007-07-10 11:02:44 -0500459#endif
wdenka68d3ed2002-10-11 08:38:32 +0000460
Joe Hershberger5e2b3e02012-12-11 22:16:25 -0600461#if defined(CONFIG_CMD_ENV_CALLBACK)
Joe Hershbergercca98fd2015-05-20 14:27:19 -0500462static int print_static_binding(const char *var_name, const char *callback_name,
463 void *priv)
Joe Hershberger5e2b3e02012-12-11 22:16:25 -0600464{
465 printf("\t%-20s %-20s\n", var_name, callback_name);
466
467 return 0;
468}
469
470static int print_active_callback(ENTRY *entry)
471{
472 struct env_clbk_tbl *clbkp;
473 int i;
474 int num_callbacks;
475
476 if (entry->callback == NULL)
477 return 0;
478
479 /* look up the callback in the linker-list */
480 num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
481 for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
482 i < num_callbacks;
483 i++, clbkp++) {
484#if defined(CONFIG_NEEDS_MANUAL_RELOC)
485 if (entry->callback == clbkp->callback + gd->reloc_off)
486#else
487 if (entry->callback == clbkp->callback)
488#endif
489 break;
490 }
491
492 if (i == num_callbacks)
493 /* this should probably never happen, but just in case... */
494 printf("\t%-20s %p\n", entry->key, entry->callback);
495 else
496 printf("\t%-20s %-20s\n", entry->key, clbkp->name);
497
498 return 0;
499}
500
501/*
502 * Print the callbacks available and what they are bound to
503 */
504int do_env_callback(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
505{
506 struct env_clbk_tbl *clbkp;
507 int i;
508 int num_callbacks;
509
510 /* Print the available callbacks */
511 puts("Available callbacks:\n");
512 puts("\tCallback Name\n");
513 puts("\t-------------\n");
514 num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
515 for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
516 i < num_callbacks;
517 i++, clbkp++)
518 printf("\t%s\n", clbkp->name);
519 puts("\n");
520
521 /* Print the static bindings that may exist */
522 puts("Static callback bindings:\n");
523 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
524 printf("\t%-20s %-20s\n", "-------------", "-------------");
Joe Hershbergercca98fd2015-05-20 14:27:19 -0500525 env_attr_walk(ENV_CALLBACK_LIST_STATIC, print_static_binding, NULL);
Joe Hershberger5e2b3e02012-12-11 22:16:25 -0600526 puts("\n");
527
528 /* walk through each variable and print the callback if it has one */
529 puts("Active callback bindings:\n");
530 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
531 printf("\t%-20s %-20s\n", "-------------", "-------------");
532 hwalk_r(&env_htab, print_active_callback);
533 return 0;
534}
535#endif
536
Joe Hershbergerfffad712012-12-11 22:16:33 -0600537#if defined(CONFIG_CMD_ENV_FLAGS)
Joe Hershbergercca98fd2015-05-20 14:27:19 -0500538static int print_static_flags(const char *var_name, const char *flags,
539 void *priv)
Joe Hershbergerfffad712012-12-11 22:16:33 -0600540{
541 enum env_flags_vartype type = env_flags_parse_vartype(flags);
Joe Hershberger267541f2012-12-11 22:16:34 -0600542 enum env_flags_varaccess access = env_flags_parse_varaccess(flags);
Joe Hershbergerfffad712012-12-11 22:16:33 -0600543
Joe Hershberger267541f2012-12-11 22:16:34 -0600544 printf("\t%-20s %-20s %-20s\n", var_name,
545 env_flags_get_vartype_name(type),
546 env_flags_get_varaccess_name(access));
Joe Hershbergerfffad712012-12-11 22:16:33 -0600547
548 return 0;
549}
550
551static int print_active_flags(ENTRY *entry)
552{
553 enum env_flags_vartype type;
Joe Hershberger267541f2012-12-11 22:16:34 -0600554 enum env_flags_varaccess access;
Joe Hershbergerfffad712012-12-11 22:16:33 -0600555
556 if (entry->flags == 0)
557 return 0;
558
559 type = (enum env_flags_vartype)
560 (entry->flags & ENV_FLAGS_VARTYPE_BIN_MASK);
Joe Hershberger267541f2012-12-11 22:16:34 -0600561 access = env_flags_parse_varaccess_from_binflags(entry->flags);
562 printf("\t%-20s %-20s %-20s\n", entry->key,
563 env_flags_get_vartype_name(type),
564 env_flags_get_varaccess_name(access));
Joe Hershbergerfffad712012-12-11 22:16:33 -0600565
566 return 0;
567}
568
569/*
570 * Print the flags available and what variables have flags
571 */
572int do_env_flags(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
573{
574 /* Print the available variable types */
575 printf("Available variable type flags (position %d):\n",
576 ENV_FLAGS_VARTYPE_LOC);
577 puts("\tFlag\tVariable Type Name\n");
578 puts("\t----\t------------------\n");
579 env_flags_print_vartypes();
580 puts("\n");
581
Joe Hershberger267541f2012-12-11 22:16:34 -0600582 /* Print the available variable access types */
583 printf("Available variable access flags (position %d):\n",
584 ENV_FLAGS_VARACCESS_LOC);
585 puts("\tFlag\tVariable Access Name\n");
586 puts("\t----\t--------------------\n");
587 env_flags_print_varaccess();
588 puts("\n");
589
Joe Hershbergerfffad712012-12-11 22:16:33 -0600590 /* Print the static flags that may exist */
591 puts("Static flags:\n");
Joe Hershberger267541f2012-12-11 22:16:34 -0600592 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
593 "Variable Access");
594 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
595 "---------------");
Joe Hershbergercca98fd2015-05-20 14:27:19 -0500596 env_attr_walk(ENV_FLAGS_LIST_STATIC, print_static_flags, NULL);
Joe Hershbergerfffad712012-12-11 22:16:33 -0600597 puts("\n");
598
599 /* walk through each variable and print the flags if non-default */
600 puts("Active flags:\n");
Joe Hershberger267541f2012-12-11 22:16:34 -0600601 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
602 "Variable Access");
603 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
604 "---------------");
Joe Hershbergerfffad712012-12-11 22:16:33 -0600605 hwalk_r(&env_htab, print_active_flags);
606 return 0;
607}
608#endif
609
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200610/*
Peter Tyser246c6922009-10-25 15:12:56 -0500611 * Interactively edit an environment variable
612 */
613#if defined(CONFIG_CMD_EDITENV)
Kim Phillips088f1b12012-10-29 13:34:31 +0000614static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc,
615 char * const argv[])
Peter Tyser246c6922009-10-25 15:12:56 -0500616{
617 char buffer[CONFIG_SYS_CBSIZE];
618 char *init_val;
Peter Tyser246c6922009-10-25 15:12:56 -0500619
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200620 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000621 return CMD_RET_USAGE;
Peter Tyser246c6922009-10-25 15:12:56 -0500622
Joe Hershberger94b467b2015-05-20 14:27:21 -0500623 /* before import into hashtable */
624 if (!(gd->flags & GD_FLG_ENV_READY))
625 return 1;
626
Peter Tyser246c6922009-10-25 15:12:56 -0500627 /* Set read buffer to initial value or empty sting */
Simon Glass00caae62017-08-03 12:22:12 -0600628 init_val = env_get(argv[1]);
Peter Tyser246c6922009-10-25 15:12:56 -0500629 if (init_val)
Peng Fan5d49b4c2015-12-23 12:08:09 +0800630 snprintf(buffer, CONFIG_SYS_CBSIZE, "%s", init_val);
Peter Tyser246c6922009-10-25 15:12:56 -0500631 else
632 buffer[0] = '\0';
633
Simon Glasse1bf8242014-04-10 20:01:27 -0600634 if (cli_readline_into_buffer("edit: ", buffer, 0) < 0)
Joe Hershberger18a3cce2013-02-08 10:12:34 +0000635 return 1;
Peter Tyser246c6922009-10-25 15:12:56 -0500636
Joe Hershberger94b467b2015-05-20 14:27:21 -0500637 if (buffer[0] == '\0') {
638 const char * const _argv[3] = { "setenv", argv[1], NULL };
639
640 return _do_env_set(0, 2, (char * const *)_argv, H_INTERACTIVE);
641 } else {
642 const char * const _argv[4] = { "setenv", argv[1], buffer,
643 NULL };
644
645 return _do_env_set(0, 3, (char * const *)_argv, H_INTERACTIVE);
646 }
Peter Tyser246c6922009-10-25 15:12:56 -0500647}
648#endif /* CONFIG_CMD_EDITENV */
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000649#endif /* CONFIG_SPL_BUILD */
Peter Tyser246c6922009-10-25 15:12:56 -0500650
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200651/*
wdenka68d3ed2002-10-11 08:38:32 +0000652 * Look up variable from environment,
653 * return address of storage for that variable,
654 * or NULL if not found
655 */
Simon Glass00caae62017-08-03 12:22:12 -0600656char *env_get(const char *name)
wdenka68d3ed2002-10-11 08:38:32 +0000657{
Igor Grinbergd09b1782011-11-07 01:13:59 +0000658 if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200659 ENTRY e, *ep;
wdenka68d3ed2002-10-11 08:38:32 +0000660
Wolfgang Denk91a76752010-07-24 20:22:02 +0200661 WATCHDOG_RESET();
wdenk2a3cb022002-11-05 21:01:48 +0000662
Igor Grinbergd09b1782011-11-07 01:13:59 +0000663 e.key = name;
664 e.data = NULL;
Joe Hershbergerc4e00572012-12-11 22:16:19 -0600665 hsearch_r(e, FIND, &ep, &env_htab, 0);
wdenka68d3ed2002-10-11 08:38:32 +0000666
Macpaul Linf3c615b2011-04-26 16:16:45 +0000667 return ep ? ep->data : NULL;
wdenka68d3ed2002-10-11 08:38:32 +0000668 }
669
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200670 /* restricted capabilities before import */
Simon Glass00caae62017-08-03 12:22:12 -0600671 if (env_get_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0)
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200672 return (char *)(gd->env_buf);
673
674 return NULL;
wdenka68d3ed2002-10-11 08:38:32 +0000675}
676
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200677/*
678 * Look up variable from environment for restricted C runtime env.
679 */
Simon Glass00caae62017-08-03 12:22:12 -0600680int env_get_f(const char *name, char *buf, unsigned len)
wdenka68d3ed2002-10-11 08:38:32 +0000681{
Simon Goldschmidt87c7fb32018-01-31 07:56:48 +0100682 int i, nxt, c;
wdenka68d3ed2002-10-11 08:38:32 +0000683
Igor Grinbergd09b1782011-11-07 01:13:59 +0000684 for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
wdenka68d3ed2002-10-11 08:38:32 +0000685 int val, n;
686
Simon Goldschmidt87c7fb32018-01-31 07:56:48 +0100687 for (nxt = i; (c = env_get_char(nxt)) != '\0'; ++nxt) {
688 if (c < 0)
689 return c;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000690 if (nxt >= CONFIG_ENV_SIZE)
691 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000692 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000693
694 val = envmatch((uchar *)name, i);
695 if (val < 0)
wdenka68d3ed2002-10-11 08:38:32 +0000696 continue;
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200697
wdenka68d3ed2002-10-11 08:38:32 +0000698 /* found; copy out */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000699 for (n = 0; n < len; ++n, ++buf) {
Simon Goldschmidt87c7fb32018-01-31 07:56:48 +0100700 c = env_get_char(val++);
701 if (c < 0)
702 return c;
703 *buf = c;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000704 if (*buf == '\0')
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200705 return n;
706 }
707
708 if (n)
709 *--buf = '\0';
710
Wolfgang Denka02a8842011-05-04 10:29:49 +0000711 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
712 len, name);
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200713
714 return n;
wdenka68d3ed2002-10-11 08:38:32 +0000715 }
Igor Grinbergd09b1782011-11-07 01:13:59 +0000716
Macpaul Linf3c615b2011-04-26 16:16:45 +0000717 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000718}
719
Simon Glass4a9b4132011-10-14 13:25:18 +0000720/**
721 * Decode the integer value of an environment variable and return it.
722 *
Shyam Saini919d25c2018-06-07 19:47:19 +0530723 * @param name Name of environment variable
Simon Glass4a9b4132011-10-14 13:25:18 +0000724 * @param base Number base to use (normally 10, or 16 for hex)
725 * @param default_val Default value to return if the variable is not
726 * found
727 * @return the decoded value, or default_val if not found
728 */
Simon Glassbfebc8c2017-08-03 12:22:13 -0600729ulong env_get_ulong(const char *name, int base, ulong default_val)
Simon Glass4a9b4132011-10-14 13:25:18 +0000730{
731 /*
Simon Glass00caae62017-08-03 12:22:12 -0600732 * We can use env_get() here, even before relocation, since the
Simon Glass4a9b4132011-10-14 13:25:18 +0000733 * environment variable value is an integer and thus short.
734 */
Simon Glass00caae62017-08-03 12:22:12 -0600735 const char *str = env_get(name);
Simon Glass4a9b4132011-10-14 13:25:18 +0000736
737 return str ? simple_strtoul(str, NULL, base) : default_val;
738}
739
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000740#ifndef CONFIG_SPL_BUILD
Mike Frysingerbdab39d2009-01-28 19:08:14 -0500741#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
Kim Phillips088f1b12012-10-29 13:34:31 +0000742static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc,
743 char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000744{
Simon Glass01510092017-08-03 12:22:08 -0600745 return env_save() ? 1 : 0;
wdenka68d3ed2002-10-11 08:38:32 +0000746}
wdenk8bde7f72003-06-27 21:31:46 +0000747
Mike Frysingerba69dc22008-12-30 02:59:25 -0500748U_BOOT_CMD(
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200749 saveenv, 1, 0, do_env_save,
Peter Tyser2fb26042009-01-27 18:03:12 -0600750 "save environment variables to persistent storage",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200751 ""
Mike Frysingerba69dc22008-12-30 02:59:25 -0500752);
wdenka68d3ed2002-10-11 08:38:32 +0000753#endif
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000754#endif /* CONFIG_SPL_BUILD */
wdenka68d3ed2002-10-11 08:38:32 +0000755
756
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200757/*
wdenka68d3ed2002-10-11 08:38:32 +0000758 * Match a name / name=value pair
759 *
760 * s1 is either a simple 'name', or a 'name=value' pair.
761 * i2 is the environment index for a 'name2=value2' pair.
Igor Grinbergd09b1782011-11-07 01:13:59 +0000762 * If the names match, return the index for the value2, else -1.
wdenka68d3ed2002-10-11 08:38:32 +0000763 */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000764int envmatch(uchar *s1, int i2)
wdenka68d3ed2002-10-11 08:38:32 +0000765{
Joe Hershberger586197d2012-10-03 09:38:50 +0000766 if (s1 == NULL)
767 return -1;
768
wdenka68d3ed2002-10-11 08:38:32 +0000769 while (*s1 == env_get_char(i2++))
770 if (*s1++ == '=')
Macpaul Linf3c615b2011-04-26 16:16:45 +0000771 return i2;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000772
wdenka68d3ed2002-10-11 08:38:32 +0000773 if (*s1 == '\0' && env_get_char(i2-1) == '=')
Macpaul Linf3c615b2011-04-26 16:16:45 +0000774 return i2;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000775
Macpaul Linf3c615b2011-04-26 16:16:45 +0000776 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000777}
wdenk8bde7f72003-06-27 21:31:46 +0000778
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000779#ifndef CONFIG_SPL_BUILD
Gerlando Falautob64b7c32012-08-24 00:11:41 +0000780static int do_env_default(cmd_tbl_t *cmdtp, int __flag,
Igor Grinbergd09b1782011-11-07 01:13:59 +0000781 int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200782{
Gerlando Falautob64b7c32012-08-24 00:11:41 +0000783 int all = 0, flag = 0;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000784
Gerlando Falautob64b7c32012-08-24 00:11:41 +0000785 debug("Initial value for argc=%d\n", argc);
786 while (--argc > 0 && **++argv == '-') {
787 char *arg = *argv;
788
789 while (*++arg) {
790 switch (*arg) {
791 case 'a': /* default all */
792 all = 1;
793 break;
794 case 'f': /* force */
795 flag |= H_FORCE;
796 break;
797 default:
798 return cmd_usage(cmdtp);
799 }
800 }
801 }
802 debug("Final value for argc=%d\n", argc);
803 if (all && (argc == 0)) {
804 /* Reset the whole environment */
805 set_default_env("## Resetting to default environment\n");
806 return 0;
807 }
808 if (!all && (argc > 0)) {
809 /* Reset individual variables */
810 set_default_vars(argc, argv);
811 return 0;
812 }
813
814 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200815}
wdenk8bde7f72003-06-27 21:31:46 +0000816
Igor Grinbergd09b1782011-11-07 01:13:59 +0000817static int do_env_delete(cmd_tbl_t *cmdtp, int flag,
818 int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200819{
Joe Hershberger9d8d6612012-12-11 22:16:36 -0600820 int env_flag = H_INTERACTIVE;
821 int ret = 0;
822
823 debug("Initial value for argc=%d\n", argc);
824 while (argc > 1 && **(argv + 1) == '-') {
825 char *arg = *++argv;
826
827 --argc;
828 while (*++arg) {
829 switch (*arg) {
830 case 'f': /* force */
831 env_flag |= H_FORCE;
832 break;
833 default:
834 return CMD_RET_USAGE;
835 }
836 }
837 }
838 debug("Final value for argc=%d\n", argc);
839
840 env_id++;
841
842 while (--argc > 0) {
843 char *name = *++argv;
844
845 if (!hdelete_r(name, &env_htab, env_flag))
846 ret = 1;
847 }
848
849 return ret;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200850}
851
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500852#ifdef CONFIG_CMD_EXPORTENV
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200853/*
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100854 * env export [-t | -b | -c] [-s size] addr [var ...]
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200855 * -t: export as text format; if size is given, data will be
856 * padded with '\0' bytes; if not, one terminating '\0'
857 * will be added (which is included in the "filesize"
858 * setting so you can for exmple copy this to flash and
859 * keep the termination).
860 * -b: export as binary format (name=value pairs separated by
861 * '\0', list end marked by double "\0\0")
862 * -c: export as checksum protected environment format as
863 * used for example by "saveenv" command
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100864 * -s size:
865 * size of output buffer
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200866 * addr: memory address where environment gets stored
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100867 * var... List of variable names that get included into the
868 * export. Without arguments, the whole environment gets
869 * exported.
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200870 *
871 * With "-c" and size is NOT given, then the export command will
872 * format the data as currently used for the persistent storage,
873 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
Robert P. J. Dayfc0b5942016-09-07 14:27:59 -0400874 * prepend a valid CRC32 checksum and, in case of redundant
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200875 * environment, a "current" redundancy flag. If size is given, this
876 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
877 * checksum and redundancy flag will be inserted.
878 *
879 * With "-b" and "-t", always only the real data (including a
880 * terminating '\0' byte) will be written; here the optional size
881 * argument will be used to make sure not to overflow the user
882 * provided buffer; the command will abort if the size is not
Robert P. J. Dayfc0b5942016-09-07 14:27:59 -0400883 * sufficient. Any remaining space will be '\0' padded.
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200884 *
885 * On successful return, the variable "filesize" will be set.
886 * Note that filesize includes the trailing/terminating '\0' byte(s).
887 *
Robert P. J. Dayfc0b5942016-09-07 14:27:59 -0400888 * Usage scenario: create a text snapshot/backup of the current settings:
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200889 *
890 * => env export -t 100000
891 * => era ${backup_addr} +${filesize}
892 * => cp.b 100000 ${backup_addr} ${filesize}
893 *
894 * Re-import this snapshot, deleting all other settings:
895 *
896 * => env import -d -t ${backup_addr}
897 */
Igor Grinbergd09b1782011-11-07 01:13:59 +0000898static int do_env_export(cmd_tbl_t *cmdtp, int flag,
899 int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200900{
901 char buf[32];
Simon Glassfd37dac2013-10-25 23:01:31 -0600902 ulong addr;
903 char *ptr, *cmd, *res;
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100904 size_t size = 0;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200905 ssize_t len;
906 env_t *envp;
907 char sep = '\n';
908 int chk = 0;
909 int fmt = 0;
910
911 cmd = *argv;
912
913 while (--argc > 0 && **++argv == '-') {
914 char *arg = *argv;
915 while (*++arg) {
916 switch (*arg) {
917 case 'b': /* raw binary format */
918 if (fmt++)
919 goto sep_err;
920 sep = '\0';
921 break;
922 case 'c': /* external checksum format */
923 if (fmt++)
924 goto sep_err;
925 sep = '\0';
926 chk = 1;
927 break;
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100928 case 's': /* size given */
929 if (--argc <= 0)
930 return cmd_usage(cmdtp);
931 size = simple_strtoul(*++argv, NULL, 16);
932 goto NXTARG;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200933 case 't': /* text format */
934 if (fmt++)
935 goto sep_err;
936 sep = '\n';
937 break;
938 default:
Simon Glass4c12eeb2011-12-10 08:44:01 +0000939 return CMD_RET_USAGE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200940 }
941 }
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100942NXTARG: ;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200943 }
944
Macpaul Linf3c615b2011-04-26 16:16:45 +0000945 if (argc < 1)
Simon Glass4c12eeb2011-12-10 08:44:01 +0000946 return CMD_RET_USAGE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200947
Simon Glassfd37dac2013-10-25 23:01:31 -0600948 addr = simple_strtoul(argv[0], NULL, 16);
949 ptr = map_sysmem(addr, size);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200950
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100951 if (size)
Simon Glassfd37dac2013-10-25 23:01:31 -0600952 memset(ptr, '\0', size);
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100953
954 argc--;
955 argv++;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200956
957 if (sep) { /* export as text file */
Wolfgang Denkea009d42013-03-23 23:50:28 +0000958 len = hexport_r(&env_htab, sep,
959 H_MATCH_KEY | H_MATCH_IDENT,
Simon Glassfd37dac2013-10-25 23:01:31 -0600960 &ptr, size, argc, argv);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200961 if (len < 0) {
Masahiro Yamada9b643e32017-09-16 14:10:41 +0900962 pr_err("Cannot export environment: errno = %d\n", errno);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200963 return 1;
964 }
Andreas Bießmann8c3aff52011-02-09 15:10:29 +0100965 sprintf(buf, "%zX", (size_t)len);
Simon Glass382bee52017-08-03 12:22:09 -0600966 env_set("filesize", buf);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200967
968 return 0;
969 }
970
Simon Glassfd37dac2013-10-25 23:01:31 -0600971 envp = (env_t *)ptr;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200972
973 if (chk) /* export as checksum protected block */
974 res = (char *)envp->data;
975 else /* export as raw binary data */
Simon Glassfd37dac2013-10-25 23:01:31 -0600976 res = ptr;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200977
Wolfgang Denkea009d42013-03-23 23:50:28 +0000978 len = hexport_r(&env_htab, '\0',
979 H_MATCH_KEY | H_MATCH_IDENT,
980 &res, ENV_SIZE, argc, argv);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200981 if (len < 0) {
Masahiro Yamada9b643e32017-09-16 14:10:41 +0900982 pr_err("Cannot export environment: errno = %d\n", errno);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200983 return 1;
984 }
985
986 if (chk) {
Igor Grinbergd09b1782011-11-07 01:13:59 +0000987 envp->crc = crc32(0, envp->data, ENV_SIZE);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200988#ifdef CONFIG_ENV_ADDR_REDUND
989 envp->flags = ACTIVE_FLAG;
990#endif
991 }
Simon Glass018f5302017-08-03 12:22:10 -0600992 env_set_hex("filesize", len + offsetof(env_t, data));
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200993
994 return 0;
995
996sep_err:
Igor Grinbergd09b1782011-11-07 01:13:59 +0000997 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200998 return 1;
999}
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001000#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001001
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001002#ifdef CONFIG_CMD_IMPORTENV
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001003/*
Alexander Hollerecd14462014-07-14 17:49:55 +02001004 * env import [-d] [-t [-r] | -b | -c] addr [size]
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001005 * -d: delete existing environment before importing;
Robert P. J. Dayfc0b5942016-09-07 14:27:59 -04001006 * otherwise overwrite / append to existing definitions
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001007 * -t: assume text format; either "size" must be given or the
1008 * text data must be '\0' terminated
Alexander Hollerecd14462014-07-14 17:49:55 +02001009 * -r: handle CRLF like LF, that means exported variables with
1010 * a content which ends with \r won't get imported. Used
1011 * to import text files created with editors which are using CRLF
1012 * for line endings. Only effective in addition to -t.
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001013 * -b: assume binary format ('\0' separated, "\0\0" terminated)
1014 * -c: assume checksum protected environment format
1015 * addr: memory address to read from
1016 * size: length of input data; if missing, proper '\0'
1017 * termination is mandatory
1018 */
Igor Grinbergd09b1782011-11-07 01:13:59 +00001019static int do_env_import(cmd_tbl_t *cmdtp, int flag,
1020 int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001021{
Simon Glassfd37dac2013-10-25 23:01:31 -06001022 ulong addr;
1023 char *cmd, *ptr;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001024 char sep = '\n';
1025 int chk = 0;
1026 int fmt = 0;
1027 int del = 0;
Alexander Hollerecd14462014-07-14 17:49:55 +02001028 int crlf_is_lf = 0;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001029 size_t size;
1030
1031 cmd = *argv;
1032
1033 while (--argc > 0 && **++argv == '-') {
1034 char *arg = *argv;
1035 while (*++arg) {
1036 switch (*arg) {
1037 case 'b': /* raw binary format */
1038 if (fmt++)
1039 goto sep_err;
1040 sep = '\0';
1041 break;
1042 case 'c': /* external checksum format */
1043 if (fmt++)
1044 goto sep_err;
1045 sep = '\0';
1046 chk = 1;
1047 break;
1048 case 't': /* text format */
1049 if (fmt++)
1050 goto sep_err;
1051 sep = '\n';
1052 break;
Alexander Hollerecd14462014-07-14 17:49:55 +02001053 case 'r': /* handle CRLF like LF */
1054 crlf_is_lf = 1;
1055 break;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001056 case 'd':
1057 del = 1;
1058 break;
1059 default:
Simon Glass4c12eeb2011-12-10 08:44:01 +00001060 return CMD_RET_USAGE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001061 }
1062 }
1063 }
1064
Macpaul Linf3c615b2011-04-26 16:16:45 +00001065 if (argc < 1)
Simon Glass4c12eeb2011-12-10 08:44:01 +00001066 return CMD_RET_USAGE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001067
1068 if (!fmt)
1069 printf("## Warning: defaulting to text format\n");
1070
Alexander Hollerecd14462014-07-14 17:49:55 +02001071 if (sep != '\n' && crlf_is_lf )
1072 crlf_is_lf = 0;
1073
Simon Glassfd37dac2013-10-25 23:01:31 -06001074 addr = simple_strtoul(argv[0], NULL, 16);
1075 ptr = map_sysmem(addr, 0);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001076
1077 if (argc == 2) {
1078 size = simple_strtoul(argv[1], NULL, 16);
Tom Rini3775dcd2014-03-04 15:52:35 -05001079 } else if (argc == 1 && chk) {
1080 puts("## Error: external checksum format must pass size\n");
1081 return CMD_RET_FAILURE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001082 } else {
Simon Glassfd37dac2013-10-25 23:01:31 -06001083 char *s = ptr;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001084
1085 size = 0;
1086
1087 while (size < MAX_ENV_SIZE) {
1088 if ((*s == sep) && (*(s+1) == '\0'))
1089 break;
1090 ++s;
1091 ++size;
1092 }
1093 if (size == MAX_ENV_SIZE) {
1094 printf("## Warning: Input data exceeds %d bytes"
1095 " - truncated\n", MAX_ENV_SIZE);
1096 }
Horst Kronstorferd3f80c72011-12-16 23:33:10 +00001097 size += 2;
Simon Glass79afc882011-11-04 06:42:36 +00001098 printf("## Info: input data size = %zu = 0x%zX\n", size, size);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001099 }
1100
1101 if (chk) {
1102 uint32_t crc;
Simon Glassfd37dac2013-10-25 23:01:31 -06001103 env_t *ep = (env_t *)ptr;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001104
1105 size -= offsetof(env_t, data);
1106 memcpy(&crc, &ep->crc, sizeof(crc));
1107
1108 if (crc32(0, ep->data, size) != crc) {
1109 puts("## Error: bad CRC, import failed\n");
1110 return 1;
1111 }
Simon Glassfd37dac2013-10-25 23:01:31 -06001112 ptr = (char *)ep->data;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001113 }
1114
Alexander Hollerecd14462014-07-14 17:49:55 +02001115 if (himport_r(&env_htab, ptr, size, sep, del ? 0 : H_NOCLEAR,
1116 crlf_is_lf, 0, NULL) == 0) {
Masahiro Yamada9b643e32017-09-16 14:10:41 +09001117 pr_err("Environment import failed: errno = %d\n", errno);
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001118 return 1;
1119 }
1120 gd->flags |= GD_FLG_ENV_READY;
1121
1122 return 0;
1123
1124sep_err:
1125 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
1126 cmd);
1127 return 1;
1128}
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001129#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001130
Andrew Ruder88733e22013-10-22 19:07:34 -05001131#if defined(CONFIG_CMD_ENV_EXISTS)
1132static int do_env_exists(cmd_tbl_t *cmdtp, int flag, int argc,
1133 char * const argv[])
1134{
1135 ENTRY e, *ep;
1136
1137 if (argc < 2)
1138 return CMD_RET_USAGE;
1139
1140 e.key = argv[1];
1141 e.data = NULL;
1142 hsearch_r(e, FIND, &ep, &env_htab, 0);
1143
1144 return (ep == NULL) ? 1 : 0;
1145}
1146#endif
1147
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001148/*
1149 * New command line interface: "env" command with subcommands
1150 */
1151static cmd_tbl_t cmd_env_sub[] = {
1152#if defined(CONFIG_CMD_ASKENV)
1153 U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""),
1154#endif
1155 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""),
Joe Hershberger9d8d6612012-12-11 22:16:36 -06001156 U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS, 0, do_env_delete, "", ""),
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001157#if defined(CONFIG_CMD_EDITENV)
1158 U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
1159#endif
Joe Hershberger5e2b3e02012-12-11 22:16:25 -06001160#if defined(CONFIG_CMD_ENV_CALLBACK)
1161 U_BOOT_CMD_MKENT(callbacks, 1, 0, do_env_callback, "", ""),
1162#endif
Joe Hershbergerfffad712012-12-11 22:16:33 -06001163#if defined(CONFIG_CMD_ENV_FLAGS)
1164 U_BOOT_CMD_MKENT(flags, 1, 0, do_env_flags, "", ""),
1165#endif
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001166#if defined(CONFIG_CMD_EXPORTENV)
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001167 U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001168#endif
Kim Phillipsa000b792011-04-05 07:15:14 +00001169#if defined(CONFIG_CMD_GREPENV)
1170 U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""),
1171#endif
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001172#if defined(CONFIG_CMD_IMPORTENV)
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001173 U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
Mike Frysinger0c79cda2010-12-26 23:09:45 -05001174#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001175 U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
1176#if defined(CONFIG_CMD_RUN)
1177 U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),
1178#endif
1179#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1180 U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""),
1181#endif
1182 U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""),
Andrew Ruder88733e22013-10-22 19:07:34 -05001183#if defined(CONFIG_CMD_ENV_EXISTS)
1184 U_BOOT_CMD_MKENT(exists, 2, 0, do_env_exists, "", ""),
1185#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001186};
1187
Wolfgang Denk2e5167c2010-10-28 20:00:11 +02001188#if defined(CONFIG_NEEDS_MANUAL_RELOC)
Heiko Schocher60f7da12010-10-05 14:17:00 +02001189void env_reloc(void)
1190{
1191 fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1192}
1193#endif
1194
Macpaul Linf3c615b2011-04-26 16:16:45 +00001195static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001196{
1197 cmd_tbl_t *cp;
1198
Thomas Weber5904da02010-11-24 13:07:52 +01001199 if (argc < 2)
Simon Glass4c12eeb2011-12-10 08:44:01 +00001200 return CMD_RET_USAGE;
Thomas Weber5904da02010-11-24 13:07:52 +01001201
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001202 /* drop initial "env" arg */
1203 argc--;
1204 argv++;
1205
1206 cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1207
1208 if (cp)
1209 return cp->cmd(cmdtp, flag, argc, argv);
1210
Simon Glass4c12eeb2011-12-10 08:44:01 +00001211 return CMD_RET_USAGE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001212}
1213
Kim Phillips088f1b12012-10-29 13:34:31 +00001214#ifdef CONFIG_SYS_LONGHELP
1215static char env_help_text[] =
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001216#if defined(CONFIG_CMD_ASKENV)
1217 "ask name [message] [size] - ask for environment variable\nenv "
1218#endif
Joe Hershberger5e2b3e02012-12-11 22:16:25 -06001219#if defined(CONFIG_CMD_ENV_CALLBACK)
1220 "callbacks - print callbacks and their associated variables\nenv "
1221#endif
Gerlando Falautob64b7c32012-08-24 00:11:41 +00001222 "default [-f] -a - [forcibly] reset default environment\n"
1223 "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
Joe Hershberger9d8d6612012-12-11 22:16:36 -06001224 "env delete [-f] var [...] - [forcibly] delete variable(s)\n"
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001225#if defined(CONFIG_CMD_EDITENV)
1226 "env edit name - edit environment variable\n"
1227#endif
Andrew Ruder88733e22013-10-22 19:07:34 -05001228#if defined(CONFIG_CMD_ENV_EXISTS)
1229 "env exists name - tests for existence of variable\n"
1230#endif
Benoît Thébaudeau4796bc42012-08-10 07:45:44 +00001231#if defined(CONFIG_CMD_EXPORTENV)
Wolfgang Denk37f2fe72011-11-06 22:49:44 +01001232 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
Benoît Thébaudeau4796bc42012-08-10 07:45:44 +00001233#endif
Joe Hershbergerfffad712012-12-11 22:16:33 -06001234#if defined(CONFIG_CMD_ENV_FLAGS)
1235 "env flags - print variables that have non-default flags\n"
1236#endif
Kim Phillipsa000b792011-04-05 07:15:14 +00001237#if defined(CONFIG_CMD_GREPENV)
Wolfgang Denkbe29df62013-03-23 23:50:32 +00001238#ifdef CONFIG_REGEX
1239 "env grep [-e] [-n | -v | -b] string [...] - search environment\n"
1240#else
Wolfgang Denkd87244d2013-03-23 23:50:30 +00001241 "env grep [-n | -v | -b] string [...] - search environment\n"
Kim Phillipsa000b792011-04-05 07:15:14 +00001242#endif
Wolfgang Denkbe29df62013-03-23 23:50:32 +00001243#endif
Benoît Thébaudeau4796bc42012-08-10 07:45:44 +00001244#if defined(CONFIG_CMD_IMPORTENV)
Alexander Hollerecd14462014-07-14 17:49:55 +02001245 "env import [-d] [-t [-r] | -b | -c] addr [size] - import environment\n"
Benoît Thébaudeau4796bc42012-08-10 07:45:44 +00001246#endif
Joe Hershbergerbe112352012-12-11 22:16:23 -06001247 "env print [-a | name ...] - print environment\n"
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001248#if defined(CONFIG_CMD_RUN)
1249 "env run var [...] - run commands in an environment variable\n"
1250#endif
Horst Kronstorferd798a9b2011-12-10 02:25:19 +00001251#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001252 "env save - save environment\n"
Horst Kronstorferd798a9b2011-12-10 02:25:19 +00001253#endif
Kim Phillips088f1b12012-10-29 13:34:31 +00001254 "env set [-f] name [arg ...]\n";
1255#endif
1256
1257U_BOOT_CMD(
1258 env, CONFIG_SYS_MAXARGS, 1, do_env,
1259 "environment handling commands", env_help_text
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001260);
1261
1262/*
1263 * Old command line interface, kept for compatibility
1264 */
wdenk8bde7f72003-06-27 21:31:46 +00001265
Peter Tyser246c6922009-10-25 15:12:56 -05001266#if defined(CONFIG_CMD_EDITENV)
Mike Frysinger722b0612010-10-20 03:52:39 -04001267U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001268 editenv, 2, 0, do_env_edit,
Peter Tyser246c6922009-10-25 15:12:56 -05001269 "edit environment variable",
1270 "name\n"
Mike Frysinger722b0612010-10-20 03:52:39 -04001271 " - edit environment variable 'name'",
1272 var_complete
Peter Tyser246c6922009-10-25 15:12:56 -05001273);
1274#endif
1275
Mike Frysinger722b0612010-10-20 03:52:39 -04001276U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001277 printenv, CONFIG_SYS_MAXARGS, 1, do_env_print,
Peter Tyser2fb26042009-01-27 18:03:12 -06001278 "print environment variables",
Joe Hershbergerbe112352012-12-11 22:16:23 -06001279 "[-a]\n - print [all] values of all environment variables\n"
wdenk8bde7f72003-06-27 21:31:46 +00001280 "printenv name ...\n"
Mike Frysinger722b0612010-10-20 03:52:39 -04001281 " - print value of environment variable 'name'",
1282 var_complete
wdenk8bde7f72003-06-27 21:31:46 +00001283);
1284
Kim Phillipsa000b792011-04-05 07:15:14 +00001285#ifdef CONFIG_CMD_GREPENV
1286U_BOOT_CMD_COMPLETE(
1287 grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep,
1288 "search environment variables",
Wolfgang Denkbe29df62013-03-23 23:50:32 +00001289#ifdef CONFIG_REGEX
1290 "[-e] [-n | -v | -b] string ...\n"
1291#else
Wolfgang Denkd87244d2013-03-23 23:50:30 +00001292 "[-n | -v | -b] string ...\n"
Wolfgang Denkbe29df62013-03-23 23:50:32 +00001293#endif
Wolfgang Denkd87244d2013-03-23 23:50:30 +00001294 " - list environment name=value pairs matching 'string'\n"
Wolfgang Denkbe29df62013-03-23 23:50:32 +00001295#ifdef CONFIG_REGEX
1296 " \"-e\": enable regular expressions;\n"
1297#endif
Wolfgang Denkd87244d2013-03-23 23:50:30 +00001298 " \"-n\": search variable names; \"-v\": search values;\n"
1299 " \"-b\": search both names and values (default)",
Kim Phillipsa000b792011-04-05 07:15:14 +00001300 var_complete
1301);
1302#endif
1303
Mike Frysinger722b0612010-10-20 03:52:39 -04001304U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001305 setenv, CONFIG_SYS_MAXARGS, 0, do_env_set,
Peter Tyser2fb26042009-01-27 18:03:12 -06001306 "set environment variables",
Joe Hershberger24ab5a12012-12-11 22:16:35 -06001307 "[-f] name value ...\n"
1308 " - [forcibly] set environment variable 'name' to 'value ...'\n"
1309 "setenv [-f] name\n"
1310 " - [forcibly] delete environment variable 'name'",
Mike Frysinger722b0612010-10-20 03:52:39 -04001311 var_complete
wdenk8bde7f72003-06-27 21:31:46 +00001312);
1313
Jon Loeligerc76fe472007-07-08 18:02:23 -05001314#if defined(CONFIG_CMD_ASKENV)
wdenk8bde7f72003-06-27 21:31:46 +00001315
wdenk0d498392003-07-01 21:06:45 +00001316U_BOOT_CMD(
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001317 askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask,
Peter Tyser2fb26042009-01-27 18:03:12 -06001318 "get environment variables from stdin",
wdenk8bde7f72003-06-27 21:31:46 +00001319 "name [message] [size]\n"
Wolfgang Denk7d855912013-02-20 04:53:16 +00001320 " - get environment variable 'name' from stdin (max 'size' chars)"
wdenk8bde7f72003-06-27 21:31:46 +00001321);
Jon Loeliger90253172007-07-10 11:02:44 -05001322#endif
wdenk8bde7f72003-06-27 21:31:46 +00001323
Jon Loeligerc76fe472007-07-08 18:02:23 -05001324#if defined(CONFIG_CMD_RUN)
Mike Frysinger722b0612010-10-20 03:52:39 -04001325U_BOOT_CMD_COMPLETE(
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001326 run, CONFIG_SYS_MAXARGS, 1, do_run,
Peter Tyser2fb26042009-01-27 18:03:12 -06001327 "run commands in an environment variable",
wdenk8bde7f72003-06-27 21:31:46 +00001328 "var [...]\n"
Mike Frysinger722b0612010-10-20 03:52:39 -04001329 " - run the commands in the environment variable(s) 'var'",
1330 var_complete
wdenk8bde7f72003-06-27 21:31:46 +00001331);
Jon Loeliger90253172007-07-10 11:02:44 -05001332#endif
Ilya Yanok7ac2fe22012-09-18 00:22:50 +00001333#endif /* CONFIG_SPL_BUILD */