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_MG_DISK) && \
63 !defined(CONFIG_ENV_IS_IN_MMC) && \
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_NOWHERE)
69 # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\
70 SPI_FLASH|MG_DISK|NVRAM|MMC} or CONFIG_ENV_IS_NOWHERE
74 #define MK_STR(x) XMK_STR(x)
77 * Maximum expected input data size for import command
79 #define MAX_ENV_SIZE (1 << 20) /* 1 MiB */
81 ulong load_addr
= CONFIG_SYS_LOAD_ADDR
; /* Default Load Address */
82 ulong save_addr
; /* Default Save Address */
83 ulong save_size
; /* Default Save Size (in bytes) */
86 * Table with supported baudrates (defined in config_xyz.h)
88 static const unsigned long baudrate_table
[] = CONFIG_SYS_BAUDRATE_TABLE
;
89 #define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
92 * This variable is incremented on each do_env_set(), so it can
93 * be used via get_env_id() as an indication, if the environment
94 * has changed or not. So it is possible to reread an environment
95 * variable only if the environment was changed ... done so for
96 * example in NetInitLoop()
98 static int env_id
= 1;
106 * Command interface: print one or all environment variables
108 * Returns 0 in case of error, or length of printed string
110 static int env_print(char *name
)
115 if (name
) { /* print a single name */
120 hsearch_r(e
, FIND
, &ep
, &env_htab
);
123 len
= printf("%s=%s\n", ep
->key
, ep
->data
);
127 /* print whole list */
128 len
= hexport_r(&env_htab
, '\n', &res
, 0, 0, NULL
);
136 /* should never happen */
140 int do_env_print (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
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
, int argc
, char * const argv
[])
171 unsigned char matched
[env_htab
.size
/ 8];
172 int rcode
= 1, arg
= 1, idx
;
175 return cmd_usage(cmdtp
);
177 memset(matched
, 0, env_htab
.size
/ 8);
179 while (arg
<= argc
) {
181 while ((idx
= hstrstr_r(argv
[arg
], idx
, &match
, &env_htab
))) {
182 if (!(matched
[idx
/ 8] & (1 << (idx
& 7)))) {
188 matched
[idx
/ 8] |= 1 << (idx
& 7);
199 * Set a new environment variable,
200 * or replace or delete an existing one.
203 int _do_env_set (int flag
, int argc
, char * const argv
[])
208 char *name
, *value
, *s
;
213 if (strchr(name
, '=')) {
214 printf("## Error: illegal character '=' in variable name \"%s\"\n", name
);
220 * search if variable with this name already exists
224 hsearch_r(e
, FIND
, &ep
, &env_htab
);
226 /* Check for console redirection */
227 if (strcmp(name
, "stdin") == 0)
229 else if (strcmp(name
, "stdout") == 0)
231 else if (strcmp(name
, "stderr") == 0)
235 if (argc
< 3) { /* Cannot delete it! */
236 printf("Can't delete \"%s\"\n", name
);
240 #ifdef CONFIG_CONSOLE_MUX
241 i
= iomux_doenv(console
, argv
[2]);
245 /* Try assigning specified device */
246 if (console_assign(console
, argv
[2]) < 0)
249 #ifdef CONFIG_SERIAL_MULTI
250 if (serial_assign(argv
[2]) < 0)
253 #endif /* CONFIG_CONSOLE_MUX */
257 * Some variables like "ethaddr" and "serial#" can be set only
258 * once and cannot be deleted; also, "ver" is readonly.
260 if (ep
) { /* variable exists */
261 #ifndef CONFIG_ENV_OVERWRITE
262 if ((strcmp(name
, "serial#") == 0) ||
263 ((strcmp(name
, "ethaddr") == 0)
264 #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
265 && (strcmp(ep
->data
, MK_STR(CONFIG_ETHADDR
)) != 0)
266 #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
268 printf("Can't overwrite \"%s\"\n", name
);
273 * Switch to new baudrate if new baudrate is supported
275 if (strcmp(name
, "baudrate") == 0) {
276 int baudrate
= simple_strtoul(argv
[2], NULL
, 10);
278 for (i
= 0; i
< N_BAUDRATES
; ++i
) {
279 if (baudrate
== baudrate_table
[i
])
282 if (i
== N_BAUDRATES
) {
283 printf("## Baudrate %d bps not supported\n",
287 printf ("## Switch baudrate to %d bps and press ENTER ...\n",
290 gd
->baudrate
= baudrate
;
291 #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2)
292 gd
->bd
->bi_baudrate
= baudrate
;
305 if ((argc
< 3) || argv
[2] == NULL
) {
306 int rc
= hdelete_r(name
, &env_htab
);
311 * Insert / replace new value
313 for (i
= 2, len
= 0; i
< argc
; ++i
)
314 len
+= strlen(argv
[i
]) + 1;
318 printf("## Can't malloc %d bytes\n", len
);
321 for (i
= 2, s
= value
; i
< argc
; ++i
) {
324 while ((*s
++ = *v
++) != '\0')
333 hsearch_r(e
, ENTER
, &ep
, &env_htab
);
336 printf("## Error inserting \"%s\" variable, errno=%d\n",
342 * Some variables should be updated when the corresponding
343 * entry in the environment is changed
346 if (strcmp(name
, "ipaddr") == 0) {
347 char *s
= argv
[2]; /* always use only one arg */
351 for (addr
= 0, i
= 0; i
< 4; ++i
) {
352 ulong val
= s
? simple_strtoul(s
, &e
, 10) : 0;
354 addr
|= (val
& 0xFF);
355 if (s
) s
= (*e
) ? e
+1 : e
;
357 bd
->bi_ip_addr
= htonl(addr
);
359 } else if (strcmp(argv
[1], "loadaddr") == 0) {
360 load_addr
= simple_strtoul(argv
[2], NULL
, 16);
363 #if defined(CONFIG_CMD_NET)
364 else if (strcmp(argv
[1], "bootfile") == 0) {
365 copy_filename(BootFile
, argv
[2], sizeof(BootFile
));
372 int setenv(const char *varname
, const char *varvalue
)
374 const char * const argv
[4] = { "setenv", varname
, varvalue
, NULL
};
376 if ((varvalue
== NULL
) || (varvalue
[0] == '\0'))
377 return _do_env_set(0, 2, (char * const *)argv
);
379 return _do_env_set(0, 3, (char * const *)argv
);
383 * Set an environment variable to an integer value
385 * @param varname Environmet variable to set
386 * @param value Value to set it to
387 * @return 0 if ok, 1 on error
389 int setenv_ulong(const char *varname
, ulong value
)
391 /* TODO: this should be unsigned */
392 char *str
= simple_itoa(value
);
394 return setenv(varname
, str
);
398 * Set an environment variable to an address in hex
400 * @param varname Environmet variable to set
401 * @param addr Value to set it to
402 * @return 0 if ok, 1 on error
404 int setenv_addr(const char *varname
, const void *addr
)
408 sprintf(str
, "%x", (uintptr_t)addr
);
409 return setenv(varname
, str
);
412 int do_env_set(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
415 return cmd_usage(cmdtp
);
417 return _do_env_set(flag
, argc
, argv
);
421 * Prompt for environment variable
423 #if defined(CONFIG_CMD_ASKENV)
424 int do_env_ask(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
426 extern char console_buffer
[CONFIG_SYS_CBSIZE
];
427 char message
[CONFIG_SYS_CBSIZE
];
428 int size
= CONFIG_SYS_CBSIZE
- 1;
432 local_args
[0] = argv
[0];
433 local_args
[1] = argv
[1];
434 local_args
[2] = NULL
;
435 local_args
[3] = NULL
;
437 /* Check the syntax */
440 return cmd_usage(cmdtp
);
442 case 2: /* env_ask envname */
443 sprintf(message
, "Please enter '%s':", argv
[1]);
446 case 3: /* env_ask envname size */
447 sprintf(message
, "Please enter '%s':", argv
[1]);
448 size
= simple_strtoul(argv
[2], NULL
, 10);
451 default: /* env_ask envname message1 ... messagen size */
452 for (i
= 2, pos
= 0; i
< argc
- 1; i
++) {
454 message
[pos
++] = ' ';
456 strcpy(message
+pos
, argv
[i
]);
457 pos
+= strlen(argv
[i
]);
460 size
= simple_strtoul(argv
[argc
- 1], NULL
, 10);
464 if (size
>= CONFIG_SYS_CBSIZE
)
465 size
= CONFIG_SYS_CBSIZE
- 1;
470 /* prompt for input */
471 len
= readline(message
);
474 console_buffer
[size
] = '\0';
477 if (console_buffer
[0] != '\0') {
478 local_args
[2] = console_buffer
;
482 /* Continue calling setenv code */
483 return _do_env_set(flag
, len
, local_args
);
488 * Interactively edit an environment variable
490 #if defined(CONFIG_CMD_EDITENV)
491 int do_env_edit(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
493 char buffer
[CONFIG_SYS_CBSIZE
];
497 return cmd_usage(cmdtp
);
499 /* Set read buffer to initial value or empty sting */
500 init_val
= getenv(argv
[1]);
502 sprintf(buffer
, "%s", init_val
);
506 readline_into_buffer("edit: ", buffer
);
508 return setenv(argv
[1], buffer
);
510 #endif /* CONFIG_CMD_EDITENV */
513 * Look up variable from environment,
514 * return address of storage for that variable,
515 * or NULL if not found
517 char *getenv(const char *name
)
519 if (gd
->flags
& GD_FLG_ENV_READY
) { /* after import into hashtable */
526 hsearch_r(e
, FIND
, &ep
, &env_htab
);
528 return ep
? ep
->data
: NULL
;
531 /* restricted capabilities before import */
533 if (getenv_f(name
, (char *)(gd
->env_buf
), sizeof(gd
->env_buf
)) > 0)
534 return (char *)(gd
->env_buf
);
540 * Look up variable from environment for restricted C runtime env.
542 int getenv_f(const char *name
, char *buf
, unsigned len
)
546 for (i
= 0; env_get_char(i
) != '\0'; i
= nxt
+1) {
549 for (nxt
= i
; env_get_char(nxt
) != '\0'; ++nxt
) {
550 if (nxt
>= CONFIG_ENV_SIZE
)
554 val
= envmatch((uchar
*)name
, i
);
558 /* found; copy out */
559 for (n
= 0; n
< len
; ++n
, ++buf
) {
560 if ((*buf
= env_get_char(val
++)) == '\0')
567 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
576 * Decode the integer value of an environment variable and return it.
578 * @param name Name of environemnt variable
579 * @param base Number base to use (normally 10, or 16 for hex)
580 * @param default_val Default value to return if the variable is not
582 * @return the decoded value, or default_val if not found
584 ulong
getenv_ulong(const char *name
, int base
, ulong default_val
)
587 * We can use getenv() here, even before relocation, since the
588 * environment variable value is an integer and thus short.
590 const char *str
= getenv(name
);
592 return str
? simple_strtoul(str
, NULL
, base
) : default_val
;
595 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
597 int do_env_save(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
599 extern char *env_name_spec
;
601 printf("Saving Environment to %s...\n", env_name_spec
);
603 return saveenv() ? 1 : 0;
607 saveenv
, 1, 0, do_env_save
,
608 "save environment variables to persistent storage",
616 * Match a name / name=value pair
618 * s1 is either a simple 'name', or a 'name=value' pair.
619 * i2 is the environment index for a 'name2=value2' pair.
620 * If the names match, return the index for the value2, else NULL.
623 int envmatch(uchar
*s1
, int i2
)
625 while (*s1
== env_get_char(i2
++))
628 if (*s1
== '\0' && env_get_char(i2
-1) == '=')
633 static int do_env_default(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
635 if ((argc
!= 2) || (strcmp(argv
[1], "-f") != 0))
636 return cmd_usage(cmdtp
);
638 set_default_env("## Resetting to default environment\n");
642 static int do_env_delete(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
644 printf("Not implemented yet\n");
648 #ifdef CONFIG_CMD_EXPORTENV
650 * env export [-t | -b | -c] [-s size] addr [var ...]
651 * -t: export as text format; if size is given, data will be
652 * padded with '\0' bytes; if not, one terminating '\0'
653 * will be added (which is included in the "filesize"
654 * setting so you can for exmple copy this to flash and
655 * keep the termination).
656 * -b: export as binary format (name=value pairs separated by
657 * '\0', list end marked by double "\0\0")
658 * -c: export as checksum protected environment format as
659 * used for example by "saveenv" command
661 * size of output buffer
662 * addr: memory address where environment gets stored
663 * var... List of variable names that get included into the
664 * export. Without arguments, the whole environment gets
667 * With "-c" and size is NOT given, then the export command will
668 * format the data as currently used for the persistent storage,
669 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
670 * prepend a valid CRC32 checksum and, in case of resundant
671 * environment, a "current" redundancy flag. If size is given, this
672 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
673 * checksum and redundancy flag will be inserted.
675 * With "-b" and "-t", always only the real data (including a
676 * terminating '\0' byte) will be written; here the optional size
677 * argument will be used to make sure not to overflow the user
678 * provided buffer; the command will abort if the size is not
679 * sufficient. Any remainign space will be '\0' padded.
681 * On successful return, the variable "filesize" will be set.
682 * Note that filesize includes the trailing/terminating '\0' byte(s).
684 * Usage szenario: create a text snapshot/backup of the current settings:
686 * => env export -t 100000
687 * => era ${backup_addr} +${filesize}
688 * => cp.b 100000 ${backup_addr} ${filesize}
690 * Re-import this snapshot, deleting all other settings:
692 * => env import -d -t ${backup_addr}
694 static int do_env_export(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
697 char *addr
, *cmd
, *res
;
707 while (--argc
> 0 && **++argv
== '-') {
711 case 'b': /* raw binary format */
716 case 'c': /* external checksum format */
722 case 's': /* size given */
724 return cmd_usage(cmdtp
);
725 size
= simple_strtoul(*++argv
, NULL
, 16);
727 case 't': /* text format */
733 return cmd_usage(cmdtp
);
740 return cmd_usage(cmdtp
);
742 addr
= (char *)simple_strtoul(argv
[0], NULL
, 16);
745 memset(addr
, '\0', size
);
750 if (sep
) { /* export as text file */
751 len
= hexport_r(&env_htab
, sep
, &addr
, size
, argc
, argv
);
753 error("Cannot export environment: errno = %d\n",
757 sprintf(buf
, "%zX", (size_t)len
);
758 setenv("filesize", buf
);
763 envp
= (env_t
*)addr
;
765 if (chk
) /* export as checksum protected block */
766 res
= (char *)envp
->data
;
767 else /* export as raw binary data */
770 len
= hexport_r(&env_htab
, '\0', &res
, ENV_SIZE
, argc
, argv
);
772 error("Cannot export environment: errno = %d\n",
778 envp
->crc
= crc32(0, envp
->data
, ENV_SIZE
);
779 #ifdef CONFIG_ENV_ADDR_REDUND
780 envp
->flags
= ACTIVE_FLAG
;
783 sprintf(buf
, "%zX", (size_t)(len
+ offsetof(env_t
, data
)));
784 setenv("filesize", buf
);
789 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
795 #ifdef CONFIG_CMD_IMPORTENV
797 * env import [-d] [-t | -b | -c] addr [size]
798 * -d: delete existing environment before importing;
799 * otherwise overwrite / append to existion definitions
800 * -t: assume text format; either "size" must be given or the
801 * text data must be '\0' terminated
802 * -b: assume binary format ('\0' separated, "\0\0" terminated)
803 * -c: assume checksum protected environment format
804 * addr: memory address to read from
805 * size: length of input data; if missing, proper '\0'
806 * termination is mandatory
808 static int do_env_import(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
819 while (--argc
> 0 && **++argv
== '-') {
823 case 'b': /* raw binary format */
828 case 'c': /* external checksum format */
834 case 't': /* text format */
843 return cmd_usage(cmdtp
);
849 return cmd_usage(cmdtp
);
852 printf("## Warning: defaulting to text format\n");
854 addr
= (char *)simple_strtoul(argv
[0], NULL
, 16);
857 size
= simple_strtoul(argv
[1], NULL
, 16);
863 while (size
< MAX_ENV_SIZE
) {
864 if ((*s
== sep
) && (*(s
+1) == '\0'))
869 if (size
== MAX_ENV_SIZE
) {
870 printf("## Warning: Input data exceeds %d bytes"
871 " - truncated\n", MAX_ENV_SIZE
);
874 printf("## Info: input data size = %zd = 0x%zX\n", size
, size
);
879 env_t
*ep
= (env_t
*)addr
;
881 size
-= offsetof(env_t
, data
);
882 memcpy(&crc
, &ep
->crc
, sizeof(crc
));
884 if (crc32(0, ep
->data
, size
) != crc
) {
885 puts("## Error: bad CRC, import failed\n");
888 addr
= (char *)ep
->data
;
891 if (himport_r(&env_htab
, addr
, size
, sep
, del
? 0 : H_NOCLEAR
) == 0) {
892 error("Environment import failed: errno = %d\n", errno
);
895 gd
->flags
|= GD_FLG_ENV_READY
;
900 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
906 #if defined(CONFIG_CMD_RUN)
907 extern int do_run(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[]);
911 * New command line interface: "env" command with subcommands
913 static cmd_tbl_t cmd_env_sub
[] = {
914 #if defined(CONFIG_CMD_ASKENV)
915 U_BOOT_CMD_MKENT(ask
, CONFIG_SYS_MAXARGS
, 1, do_env_ask
, "", ""),
917 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default
, "", ""),
918 U_BOOT_CMD_MKENT(delete, 2, 0, do_env_delete
, "", ""),
919 #if defined(CONFIG_CMD_EDITENV)
920 U_BOOT_CMD_MKENT(edit
, 2, 0, do_env_edit
, "", ""),
922 #if defined(CONFIG_CMD_EXPORTENV)
923 U_BOOT_CMD_MKENT(export
, 4, 0, do_env_export
, "", ""),
925 #if defined(CONFIG_CMD_GREPENV)
926 U_BOOT_CMD_MKENT(grep
, CONFIG_SYS_MAXARGS
, 1, do_env_grep
, "", ""),
928 #if defined(CONFIG_CMD_IMPORTENV)
929 U_BOOT_CMD_MKENT(import
, 5, 0, do_env_import
, "", ""),
931 U_BOOT_CMD_MKENT(print
, CONFIG_SYS_MAXARGS
, 1, do_env_print
, "", ""),
932 #if defined(CONFIG_CMD_RUN)
933 U_BOOT_CMD_MKENT(run
, CONFIG_SYS_MAXARGS
, 1, do_run
, "", ""),
935 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
936 U_BOOT_CMD_MKENT(save
, 1, 0, do_env_save
, "", ""),
938 U_BOOT_CMD_MKENT(set
, CONFIG_SYS_MAXARGS
, 0, do_env_set
, "", ""),
941 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
944 fixup_cmdtable(cmd_env_sub
, ARRAY_SIZE(cmd_env_sub
));
948 static int do_env(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
953 return cmd_usage(cmdtp
);
955 /* drop initial "env" arg */
959 cp
= find_cmd_tbl(argv
[0], cmd_env_sub
, ARRAY_SIZE(cmd_env_sub
));
962 return cp
->cmd(cmdtp
, flag
, argc
, argv
);
964 return cmd_usage(cmdtp
);
968 env
, CONFIG_SYS_MAXARGS
, 1, do_env
,
969 "environment handling commands",
970 #if defined(CONFIG_CMD_ASKENV)
971 "ask name [message] [size] - ask for environment variable\nenv "
973 "default -f - reset default environment\n"
974 #if defined(CONFIG_CMD_EDITENV)
975 "env edit name - edit environment variable\n"
977 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
978 #if defined(CONFIG_CMD_GREPENV)
979 "env grep string [...] - search environment\n"
981 "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
982 "env print [name ...] - print environment\n"
983 #if defined(CONFIG_CMD_RUN)
984 "env run var [...] - run commands in an environment variable\n"
986 "env save - save environment\n"
987 "env set [-f] name [arg ...]\n"
991 * Old command line interface, kept for compatibility
994 #if defined(CONFIG_CMD_EDITENV)
996 editenv
, 2, 0, do_env_edit
,
997 "edit environment variable",
999 " - edit environment variable 'name'",
1004 U_BOOT_CMD_COMPLETE(
1005 printenv
, CONFIG_SYS_MAXARGS
, 1, do_env_print
,
1006 "print environment variables",
1007 "\n - print values of all environment variables\n"
1008 "printenv name ...\n"
1009 " - print value of environment variable 'name'",
1013 #ifdef CONFIG_CMD_GREPENV
1014 U_BOOT_CMD_COMPLETE(
1015 grepenv
, CONFIG_SYS_MAXARGS
, 0, do_env_grep
,
1016 "search environment variables",
1018 " - list environment name=value pairs matching 'string'",
1023 U_BOOT_CMD_COMPLETE(
1024 setenv
, CONFIG_SYS_MAXARGS
, 0, do_env_set
,
1025 "set environment variables",
1027 " - set environment variable 'name' to 'value ...'\n"
1029 " - delete environment variable 'name'",
1033 #if defined(CONFIG_CMD_ASKENV)
1036 askenv
, CONFIG_SYS_MAXARGS
, 1, do_env_ask
,
1037 "get environment variables from stdin",
1038 "name [message] [size]\n"
1039 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1041 " - get environment variable 'name' from stdin\n"
1042 "askenv name size\n"
1043 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1044 "askenv name [message] size\n"
1045 " - display 'message' string and get environment variable 'name'"
1046 "from stdin (max 'size' chars)"
1050 #if defined(CONFIG_CMD_RUN)
1051 U_BOOT_CMD_COMPLETE(
1052 run
, CONFIG_SYS_MAXARGS
, 1, do_run
,
1053 "run commands in an environment variable",
1055 " - run the commands in the environment variable(s) 'var'",