2 * (C) Copyright 2000-2010
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
6 * Andreas Heppel <aheppel@sysgo.de>
8 * Copyright 2011 Freescale Semiconductor, Inc.
10 * See file CREDITS for list of people who contributed to this
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 * Support for persistent environment data
32 * The "environment" is stored on external storage as a list of '\0'
33 * terminated "name=value" strings. The end of the list is marked by
34 * a double '\0'. The environment is preceeded by a 32 bit CRC over
35 * the data part and, in case of redundant environment, a byte of
38 * This linearized representation will also be used before
39 * relocation, i. e. as long as we don't have a full C runtime
40 * environment. After that, we use a hash table.
45 #include <environment.h>
51 #include <linux/stddef.h>
52 #include <asm/byteorder.h>
53 #if defined(CONFIG_CMD_NET)
57 DECLARE_GLOBAL_DATA_PTR;
59 #if !defined(CONFIG_ENV_IS_IN_EEPROM) && \
60 !defined(CONFIG_ENV_IS_IN_FLASH) && \
61 !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \
62 !defined(CONFIG_ENV_IS_IN_MMC) && \
63 !defined(CONFIG_ENV_IS_IN_FAT) && \
64 !defined(CONFIG_ENV_IS_IN_NAND) && \
65 !defined(CONFIG_ENV_IS_IN_NVRAM) && \
66 !defined(CONFIG_ENV_IS_IN_ONENAND) && \
67 !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \
68 !defined(CONFIG_ENV_IS_IN_REMOTE) && \
69 !defined(CONFIG_ENV_IS_NOWHERE)
70 # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\
71 SPI_FLASH|NVRAM|MMC|FAT|REMOTE} or CONFIG_ENV_IS_NOWHERE
75 * Maximum expected input data size for import command
77 #define MAX_ENV_SIZE (1 << 20) /* 1 MiB */
79 ulong load_addr = CONFIG_SYS_LOAD_ADDR; /* Default Load Address */
80 ulong save_addr; /* Default Save Address */
81 ulong save_size; /* Default Save Size (in bytes) */
84 * Table with supported baudrates (defined in config_xyz.h)
86 static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE;
87 #define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
90 * This variable is incremented on each do_env_set(), so it can
91 * be used via get_env_id() as an indication, if the environment
92 * has changed or not. So it is possible to reread an environment
93 * variable only if the environment was changed ... done so for
94 * example in NetInitLoop()
96 static int env_id = 1;
103 #ifndef CONFIG_SPL_BUILD
105 * Command interface: print one or all environment variables
107 * Returns 0 in case of error, or length of printed string
109 static int env_print(char *name)
114 if (name) { /* print a single name */
119 hsearch_r(e, FIND, &ep, &env_htab, 0);
122 len = printf("%s=%s\n", ep->key, ep->data);
126 /* print whole list */
127 len = hexport_r(&env_htab, '\n', &res, 0, 0, NULL);
135 /* should never happen */
139 static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc,
146 /* print all env vars */
147 rcode = env_print(NULL);
150 printf("\nEnvironment size: %d/%ld bytes\n",
151 rcode, (ulong)ENV_SIZE);
155 /* print selected env vars */
156 for (i = 1; i < argc; ++i) {
157 int rc = env_print(argv[i]);
159 printf("## Error: \"%s\" not defined\n", argv[i]);
167 #ifdef CONFIG_CMD_GREPENV
168 static int do_env_grep(cmd_tbl_t *cmdtp, int flag,
169 int argc, char * const argv[])
172 unsigned char matched[env_htab.size / 8];
173 int rcode = 1, arg = 1, idx;
176 return CMD_RET_USAGE;
178 memset(matched, 0, env_htab.size / 8);
180 while (arg <= argc) {
182 while ((idx = hstrstr_r(argv[arg], idx, &match, &env_htab))) {
183 if (!(matched[idx / 8] & (1 << (idx & 7)))) {
189 matched[idx / 8] |= 1 << (idx & 7);
198 #endif /* CONFIG_SPL_BUILD */
201 * Perform consistency checking before setting, replacing, or deleting an
202 * environment variable, then (if successful) apply the changes to internals so
203 * to make them effective. Code for this function was taken out of
204 * _do_env_set(), which now calls it instead.
205 * Also called as a callback function by himport_r().
206 * Returns 0 in case of success, 1 in case of failure.
207 * When (flag & H_FORCE) is set, do not print out any error message and force
208 * overwriting of write-once variables.
211 int env_change_ok(const ENTRY *item, const char *newval, enum env_op op,
216 #if !defined(CONFIG_ENV_OVERWRITE) && defined(CONFIG_OVERWRITE_ETHADDR_ONCE) \
217 && defined(CONFIG_ETHADDR)
218 const char *oldval = NULL;
220 if (op != env_op_create)
226 /* Default value for NULL to protect string-manipulating functions */
227 newval = newval ? : "";
229 /* Check for console redirection */
230 if (strcmp(name, "stdin") == 0)
232 else if (strcmp(name, "stdout") == 0)
234 else if (strcmp(name, "stderr") == 0)
237 if (console != -1 && (gd->flags & GD_FLG_DEVINIT) != 0) {
238 if ((newval == NULL) || (*newval == '\0')) {
239 /* We cannot delete stdin/stdout/stderr */
240 if ((flag & H_FORCE) == 0)
241 printf("Can't delete \"%s\"\n", name);
245 #ifdef CONFIG_CONSOLE_MUX
246 if (iomux_doenv(console, newval))
249 /* Try assigning specified device */
250 if (console_assign(console, newval) < 0)
252 #endif /* CONFIG_CONSOLE_MUX */
255 #ifndef CONFIG_ENV_OVERWRITE
257 * Some variables like "ethaddr" and "serial#" can be set only once and
258 * cannot be deleted, unless CONFIG_ENV_OVERWRITE is defined.
260 if (op != env_op_create && /* variable exists */
261 (flag & H_FORCE) == 0) { /* and we are not forced */
262 if (strcmp(name, "serial#") == 0 ||
263 (strcmp(name, "ethaddr") == 0
264 #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
265 && strcmp(oldval, __stringify(CONFIG_ETHADDR)) != 0
266 #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
268 printf("Can't overwrite \"%s\"\n", name);
274 * When we change baudrate, or we are doing an env default -a
275 * (which will erase all variables prior to calling this),
276 * we want the baudrate to actually change - for real.
278 if (op != env_op_create || /* variable exists */
279 (flag & H_NOCLEAR) == 0) { /* or env is clear */
281 * Switch to new baudrate if new baudrate is supported
283 if (strcmp(name, "baudrate") == 0) {
284 int baudrate = simple_strtoul(newval, NULL, 10);
286 for (i = 0; i < N_BAUDRATES; ++i) {
287 if (baudrate == baudrate_table[i])
290 if (i == N_BAUDRATES) {
291 if ((flag & H_FORCE) == 0)
292 printf("## Baudrate %d bps not "
293 "supported\n", baudrate);
296 if (gd->baudrate == baudrate) {
297 /* If unchanged, we just say it's OK */
300 printf("## Switch baudrate to %d bps and"
301 "press ENTER ...\n", baudrate);
303 gd->baudrate = baudrate;
304 #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2)
305 gd->bd->bi_baudrate = baudrate;
310 while (getc() != '\r')
316 * Some variables should be updated when the corresponding
317 * entry in the environment is changed
319 if (strcmp(name, "loadaddr") == 0) {
320 load_addr = simple_strtoul(newval, NULL, 16);
323 #if defined(CONFIG_CMD_NET)
324 else if (strcmp(name, "bootfile") == 0) {
325 copy_filename(BootFile, newval, sizeof(BootFile));
333 * Set a new environment variable,
334 * or replace or delete an existing one.
336 static int _do_env_set(int flag, int argc, char * const argv[])
339 char *name, *value, *s;
345 if (strchr(name, '=')) {
346 printf("## Error: illegal character '='"
347 "in variable name \"%s\"\n", name);
354 if (argc < 3 || argv[2] == NULL) {
355 int rc = hdelete_r(name, &env_htab, H_INTERACTIVE);
360 * Insert / replace new value
362 for (i = 2, len = 0; i < argc; ++i)
363 len += strlen(argv[i]) + 1;
367 printf("## Can't malloc %d bytes\n", len);
370 for (i = 2, s = value; i < argc; ++i) {
373 while ((*s++ = *v++) != '\0')
382 hsearch_r(e, ENTER, &ep, &env_htab, H_INTERACTIVE);
385 printf("## Error inserting \"%s\" variable, errno=%d\n",
393 int setenv(const char *varname, const char *varvalue)
395 const char * const argv[4] = { "setenv", varname, varvalue, NULL };
397 if (varvalue == NULL || varvalue[0] == '\0')
398 return _do_env_set(0, 2, (char * const *)argv);
400 return _do_env_set(0, 3, (char * const *)argv);
404 * Set an environment variable to an integer value
406 * @param varname Environmet variable to set
407 * @param value Value to set it to
408 * @return 0 if ok, 1 on error
410 int setenv_ulong(const char *varname, ulong value)
412 /* TODO: this should be unsigned */
413 char *str = simple_itoa(value);
415 return setenv(varname, str);
419 * Set an environment variable to an address in hex
421 * @param varname Environmet variable to set
422 * @param addr Value to set it to
423 * @return 0 if ok, 1 on error
425 int setenv_addr(const char *varname, const void *addr)
429 sprintf(str, "%lx", (uintptr_t)addr);
430 return setenv(varname, str);
433 #ifndef CONFIG_SPL_BUILD
434 static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
437 return CMD_RET_USAGE;
439 return _do_env_set(flag, argc, argv);
443 * Prompt for environment variable
445 #if defined(CONFIG_CMD_ASKENV)
446 int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
448 char message[CONFIG_SYS_CBSIZE];
449 int size = CONFIG_SYS_CBSIZE - 1;
453 local_args[0] = argv[0];
454 local_args[1] = argv[1];
455 local_args[2] = NULL;
456 local_args[3] = NULL;
458 /* Check the syntax */
461 return CMD_RET_USAGE;
463 case 2: /* env_ask envname */
464 sprintf(message, "Please enter '%s':", argv[1]);
467 case 3: /* env_ask envname size */
468 sprintf(message, "Please enter '%s':", argv[1]);
469 size = simple_strtoul(argv[2], NULL, 10);
472 default: /* env_ask envname message1 ... messagen size */
473 for (i = 2, pos = 0; i < argc - 1; i++) {
475 message[pos++] = ' ';
477 strcpy(message + pos, argv[i]);
478 pos += strlen(argv[i]);
482 size = simple_strtoul(argv[argc - 1], NULL, 10);
486 if (size >= CONFIG_SYS_CBSIZE)
487 size = CONFIG_SYS_CBSIZE - 1;
492 /* prompt for input */
493 len = readline(message);
496 console_buffer[size] = '\0';
499 if (console_buffer[0] != '\0') {
500 local_args[2] = console_buffer;
504 /* Continue calling setenv code */
505 return _do_env_set(flag, len, local_args);
510 * Interactively edit an environment variable
512 #if defined(CONFIG_CMD_EDITENV)
513 static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc,
516 char buffer[CONFIG_SYS_CBSIZE];
520 return CMD_RET_USAGE;
522 /* Set read buffer to initial value or empty sting */
523 init_val = getenv(argv[1]);
525 sprintf(buffer, "%s", init_val);
529 readline_into_buffer("edit: ", buffer, 0);
531 return setenv(argv[1], buffer);
533 #endif /* CONFIG_CMD_EDITENV */
534 #endif /* CONFIG_SPL_BUILD */
537 * Look up variable from environment,
538 * return address of storage for that variable,
539 * or NULL if not found
541 char *getenv(const char *name)
543 if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */
550 hsearch_r(e, FIND, &ep, &env_htab, 0);
552 return ep ? ep->data : NULL;
555 /* restricted capabilities before import */
556 if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0)
557 return (char *)(gd->env_buf);
563 * Look up variable from environment for restricted C runtime env.
565 int getenv_f(const char *name, char *buf, unsigned len)
569 for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
572 for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) {
573 if (nxt >= CONFIG_ENV_SIZE)
577 val = envmatch((uchar *)name, i);
581 /* found; copy out */
582 for (n = 0; n < len; ++n, ++buf) {
583 *buf = env_get_char(val++);
591 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
601 * Decode the integer value of an environment variable and return it.
603 * @param name Name of environemnt variable
604 * @param base Number base to use (normally 10, or 16 for hex)
605 * @param default_val Default value to return if the variable is not
607 * @return the decoded value, or default_val if not found
609 ulong getenv_ulong(const char *name, int base, ulong default_val)
612 * We can use getenv() here, even before relocation, since the
613 * environment variable value is an integer and thus short.
615 const char *str = getenv(name);
617 return str ? simple_strtoul(str, NULL, base) : default_val;
620 #ifndef CONFIG_SPL_BUILD
621 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
622 static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc,
625 printf("Saving Environment to %s...\n", env_name_spec);
627 return saveenv() ? 1 : 0;
631 saveenv, 1, 0, do_env_save,
632 "save environment variables to persistent storage",
636 #endif /* CONFIG_SPL_BUILD */
640 * Match a name / name=value pair
642 * s1 is either a simple 'name', or a 'name=value' pair.
643 * i2 is the environment index for a 'name2=value2' pair.
644 * If the names match, return the index for the value2, else -1.
646 int envmatch(uchar *s1, int i2)
651 while (*s1 == env_get_char(i2++))
655 if (*s1 == '\0' && env_get_char(i2-1) == '=')
661 #ifndef CONFIG_SPL_BUILD
662 static int do_env_default(cmd_tbl_t *cmdtp, int __flag,
663 int argc, char * const argv[])
665 int all = 0, flag = 0;
667 debug("Initial value for argc=%d\n", argc);
668 while (--argc > 0 && **++argv == '-') {
673 case 'a': /* default all */
676 case 'f': /* force */
680 return cmd_usage(cmdtp);
684 debug("Final value for argc=%d\n", argc);
685 if (all && (argc == 0)) {
686 /* Reset the whole environment */
687 set_default_env("## Resetting to default environment\n");
690 if (!all && (argc > 0)) {
691 /* Reset individual variables */
692 set_default_vars(argc, argv);
696 return cmd_usage(cmdtp);
699 static int do_env_delete(cmd_tbl_t *cmdtp, int flag,
700 int argc, char * const argv[])
702 printf("Not implemented yet\n");
706 #ifdef CONFIG_CMD_EXPORTENV
708 * env export [-t | -b | -c] [-s size] addr [var ...]
709 * -t: export as text format; if size is given, data will be
710 * padded with '\0' bytes; if not, one terminating '\0'
711 * will be added (which is included in the "filesize"
712 * setting so you can for exmple copy this to flash and
713 * keep the termination).
714 * -b: export as binary format (name=value pairs separated by
715 * '\0', list end marked by double "\0\0")
716 * -c: export as checksum protected environment format as
717 * used for example by "saveenv" command
719 * size of output buffer
720 * addr: memory address where environment gets stored
721 * var... List of variable names that get included into the
722 * export. Without arguments, the whole environment gets
725 * With "-c" and size is NOT given, then the export command will
726 * format the data as currently used for the persistent storage,
727 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
728 * prepend a valid CRC32 checksum and, in case of resundant
729 * environment, a "current" redundancy flag. If size is given, this
730 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
731 * checksum and redundancy flag will be inserted.
733 * With "-b" and "-t", always only the real data (including a
734 * terminating '\0' byte) will be written; here the optional size
735 * argument will be used to make sure not to overflow the user
736 * provided buffer; the command will abort if the size is not
737 * sufficient. Any remainign space will be '\0' padded.
739 * On successful return, the variable "filesize" will be set.
740 * Note that filesize includes the trailing/terminating '\0' byte(s).
742 * Usage szenario: create a text snapshot/backup of the current settings:
744 * => env export -t 100000
745 * => era ${backup_addr} +${filesize}
746 * => cp.b 100000 ${backup_addr} ${filesize}
748 * Re-import this snapshot, deleting all other settings:
750 * => env import -d -t ${backup_addr}
752 static int do_env_export(cmd_tbl_t *cmdtp, int flag,
753 int argc, char * const argv[])
756 char *addr, *cmd, *res;
766 while (--argc > 0 && **++argv == '-') {
770 case 'b': /* raw binary format */
775 case 'c': /* external checksum format */
781 case 's': /* size given */
783 return cmd_usage(cmdtp);
784 size = simple_strtoul(*++argv, NULL, 16);
786 case 't': /* text format */
792 return CMD_RET_USAGE;
799 return CMD_RET_USAGE;
801 addr = (char *)simple_strtoul(argv[0], NULL, 16);
804 memset(addr, '\0', size);
809 if (sep) { /* export as text file */
810 len = hexport_r(&env_htab, sep, &addr, size, argc, argv);
812 error("Cannot export environment: errno = %d\n", errno);
815 sprintf(buf, "%zX", (size_t)len);
816 setenv("filesize", buf);
821 envp = (env_t *)addr;
823 if (chk) /* export as checksum protected block */
824 res = (char *)envp->data;
825 else /* export as raw binary data */
828 len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, argc, argv);
830 error("Cannot export environment: errno = %d\n", errno);
835 envp->crc = crc32(0, envp->data, ENV_SIZE);
836 #ifdef CONFIG_ENV_ADDR_REDUND
837 envp->flags = ACTIVE_FLAG;
840 sprintf(buf, "%zX", (size_t)(len + offsetof(env_t, data)));
841 setenv("filesize", buf);
846 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd);
851 #ifdef CONFIG_CMD_IMPORTENV
853 * env import [-d] [-t | -b | -c] addr [size]
854 * -d: delete existing environment before importing;
855 * otherwise overwrite / append to existion definitions
856 * -t: assume text format; either "size" must be given or the
857 * text data must be '\0' terminated
858 * -b: assume binary format ('\0' separated, "\0\0" terminated)
859 * -c: assume checksum protected environment format
860 * addr: memory address to read from
861 * size: length of input data; if missing, proper '\0'
862 * termination is mandatory
864 static int do_env_import(cmd_tbl_t *cmdtp, int flag,
865 int argc, char * const argv[])
876 while (--argc > 0 && **++argv == '-') {
880 case 'b': /* raw binary format */
885 case 'c': /* external checksum format */
891 case 't': /* text format */
900 return CMD_RET_USAGE;
906 return CMD_RET_USAGE;
909 printf("## Warning: defaulting to text format\n");
911 addr = (char *)simple_strtoul(argv[0], NULL, 16);
914 size = simple_strtoul(argv[1], NULL, 16);
920 while (size < MAX_ENV_SIZE) {
921 if ((*s == sep) && (*(s+1) == '\0'))
926 if (size == MAX_ENV_SIZE) {
927 printf("## Warning: Input data exceeds %d bytes"
928 " - truncated\n", MAX_ENV_SIZE);
931 printf("## Info: input data size = %zu = 0x%zX\n", size, size);
936 env_t *ep = (env_t *)addr;
938 size -= offsetof(env_t, data);
939 memcpy(&crc, &ep->crc, sizeof(crc));
941 if (crc32(0, ep->data, size) != crc) {
942 puts("## Error: bad CRC, import failed\n");
945 addr = (char *)ep->data;
948 if (himport_r(&env_htab, addr, size, sep, del ? 0 : H_NOCLEAR,
950 error("Environment import failed: errno = %d\n", errno);
953 gd->flags |= GD_FLG_ENV_READY;
958 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
965 * New command line interface: "env" command with subcommands
967 static cmd_tbl_t cmd_env_sub[] = {
968 #if defined(CONFIG_CMD_ASKENV)
969 U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""),
971 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""),
972 U_BOOT_CMD_MKENT(delete, 2, 0, do_env_delete, "", ""),
973 #if defined(CONFIG_CMD_EDITENV)
974 U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
976 #if defined(CONFIG_CMD_EXPORTENV)
977 U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
979 #if defined(CONFIG_CMD_GREPENV)
980 U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""),
982 #if defined(CONFIG_CMD_IMPORTENV)
983 U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
985 U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
986 #if defined(CONFIG_CMD_RUN)
987 U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),
989 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
990 U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""),
992 U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""),
995 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
998 fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1002 static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1007 return CMD_RET_USAGE;
1009 /* drop initial "env" arg */
1013 cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1016 return cp->cmd(cmdtp, flag, argc, argv);
1018 return CMD_RET_USAGE;
1021 #ifdef CONFIG_SYS_LONGHELP
1022 static char env_help_text[] =
1023 #if defined(CONFIG_CMD_ASKENV)
1024 "ask name [message] [size] - ask for environment variable\nenv "
1026 "default [-f] -a - [forcibly] reset default environment\n"
1027 "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
1028 #if defined(CONFIG_CMD_EDITENV)
1029 "env edit name - edit environment variable\n"
1031 #if defined(CONFIG_CMD_EXPORTENV)
1032 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
1034 #if defined(CONFIG_CMD_GREPENV)
1035 "env grep string [...] - search environment\n"
1037 #if defined(CONFIG_CMD_IMPORTENV)
1038 "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
1040 "env print [name ...] - print environment\n"
1041 #if defined(CONFIG_CMD_RUN)
1042 "env run var [...] - run commands in an environment variable\n"
1044 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1045 "env save - save environment\n"
1047 "env set [-f] name [arg ...]\n";
1051 env, CONFIG_SYS_MAXARGS, 1, do_env,
1052 "environment handling commands", env_help_text
1056 * Old command line interface, kept for compatibility
1059 #if defined(CONFIG_CMD_EDITENV)
1060 U_BOOT_CMD_COMPLETE(
1061 editenv, 2, 0, do_env_edit,
1062 "edit environment variable",
1064 " - edit environment variable 'name'",
1069 U_BOOT_CMD_COMPLETE(
1070 printenv, CONFIG_SYS_MAXARGS, 1, do_env_print,
1071 "print environment variables",
1072 "\n - print values of all environment variables\n"
1073 "printenv name ...\n"
1074 " - print value of environment variable 'name'",
1078 #ifdef CONFIG_CMD_GREPENV
1079 U_BOOT_CMD_COMPLETE(
1080 grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep,
1081 "search environment variables",
1083 " - list environment name=value pairs matching 'string'",
1088 U_BOOT_CMD_COMPLETE(
1089 setenv, CONFIG_SYS_MAXARGS, 0, do_env_set,
1090 "set environment variables",
1092 " - set environment variable 'name' to 'value ...'\n"
1094 " - delete environment variable 'name'",
1098 #if defined(CONFIG_CMD_ASKENV)
1101 askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask,
1102 "get environment variables from stdin",
1103 "name [message] [size]\n"
1104 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1106 " - get environment variable 'name' from stdin\n"
1107 "askenv name size\n"
1108 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1109 "askenv name [message] size\n"
1110 " - display 'message' string and get environment variable 'name'"
1111 "from stdin (max 'size' chars)"
1115 #if defined(CONFIG_CMD_RUN)
1116 U_BOOT_CMD_COMPLETE(
1117 run, CONFIG_SYS_MAXARGS, 1, do_run,
1118 "run commands in an environment variable",
1120 " - run the commands in the environment variable(s) 'var'",
1124 #endif /* CONFIG_SPL_BUILD */