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
,
169 int argc
, char * const argv
[])
172 unsigned char matched
[env_htab
.size
/ 8];
173 int rcode
= 1, arg
= 1, idx
;
176 return cmd_usage(cmdtp
);
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);
200 * Set a new environment variable,
201 * 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"
221 * search if variable with this name already exists
225 hsearch_r(e
, FIND
, &ep
, &env_htab
);
227 /* Check for console redirection */
228 if (strcmp(name
, "stdin") == 0)
230 else if (strcmp(name
, "stdout") == 0)
232 else if (strcmp(name
, "stderr") == 0)
236 if (argc
< 3) { /* Cannot delete it! */
237 printf("Can't delete \"%s\"\n", name
);
241 #ifdef CONFIG_CONSOLE_MUX
242 i
= iomux_doenv(console
, argv
[2]);
246 /* Try assigning specified device */
247 if (console_assign(console
, argv
[2]) < 0)
250 #ifdef CONFIG_SERIAL_MULTI
251 if (serial_assign(argv
[2]) < 0)
254 #endif /* CONFIG_CONSOLE_MUX */
258 * Some variables like "ethaddr" and "serial#" can be set only
259 * once and cannot be deleted; also, "ver" is readonly.
261 if (ep
) { /* variable exists */
262 #ifndef CONFIG_ENV_OVERWRITE
263 if (strcmp(name
, "serial#") == 0 ||
264 (strcmp(name
, "ethaddr") == 0
265 #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
266 && strcmp(ep
->data
, MK_STR(CONFIG_ETHADDR
)) != 0
267 #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
269 printf("Can't overwrite \"%s\"\n", name
);
274 * Switch to new baudrate if new baudrate is supported
276 if (strcmp(name
, "baudrate") == 0) {
277 int baudrate
= simple_strtoul(argv
[2], NULL
, 10);
279 for (i
= 0; i
< N_BAUDRATES
; ++i
) {
280 if (baudrate
== baudrate_table
[i
])
283 if (i
== N_BAUDRATES
) {
284 printf("## Baudrate %d bps not supported\n",
288 printf("## Switch baudrate to %d bps and"
289 "press ENTER ...\n", baudrate
);
291 gd
->baudrate
= baudrate
;
292 #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2)
293 gd
->bd
->bi_baudrate
= baudrate
;
298 while (getc() != '\r')
304 if (argc
< 3 || argv
[2] == NULL
) {
305 int rc
= hdelete_r(name
, &env_htab
);
310 * Insert / replace new value
312 for (i
= 2, len
= 0; i
< argc
; ++i
)
313 len
+= strlen(argv
[i
]) + 1;
317 printf("## Can't malloc %d bytes\n", len
);
320 for (i
= 2, s
= value
; i
< argc
; ++i
) {
323 while ((*s
++ = *v
++) != '\0')
332 hsearch_r(e
, ENTER
, &ep
, &env_htab
);
335 printf("## Error inserting \"%s\" variable, errno=%d\n",
341 * Some variables should be updated when the corresponding
342 * entry in the environment is changed
344 if (strcmp(name
, "ipaddr") == 0) {
345 char *s
= argv
[2]; /* always use only one arg */
349 for (addr
= 0, i
= 0; i
< 4; ++i
) {
350 ulong val
= s
? simple_strtoul(s
, &e
, 10) : 0;
356 bd
->bi_ip_addr
= htonl(addr
);
358 } else if (strcmp(argv
[1], "loadaddr") == 0) {
359 load_addr
= simple_strtoul(argv
[2], NULL
, 16);
362 #if defined(CONFIG_CMD_NET)
363 else if (strcmp(argv
[1], "bootfile") == 0) {
364 copy_filename(BootFile
, argv
[2], sizeof(BootFile
));
371 int setenv(const char *varname
, const char *varvalue
)
373 const char * const argv
[4] = { "setenv", varname
, varvalue
, NULL
};
375 if (varvalue
== NULL
|| varvalue
[0] == '\0')
376 return _do_env_set(0, 2, (char * const *)argv
);
378 return _do_env_set(0, 3, (char * const *)argv
);
382 * Set an environment variable to an integer value
384 * @param varname Environmet variable to set
385 * @param value Value to set it to
386 * @return 0 if ok, 1 on error
388 int setenv_ulong(const char *varname
, ulong value
)
390 /* TODO: this should be unsigned */
391 char *str
= simple_itoa(value
);
393 return setenv(varname
, str
);
397 * Set an environment variable to an address in hex
399 * @param varname Environmet variable to set
400 * @param addr Value to set it to
401 * @return 0 if ok, 1 on error
403 int setenv_addr(const char *varname
, const void *addr
)
407 sprintf(str
, "%lx", (uintptr_t)addr
);
408 return setenv(varname
, str
);
411 int do_env_set(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
414 return cmd_usage(cmdtp
);
416 return _do_env_set(flag
, argc
, argv
);
420 * Prompt for environment variable
422 #if defined(CONFIG_CMD_ASKENV)
423 int do_env_ask(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
425 char message
[CONFIG_SYS_CBSIZE
];
426 int size
= CONFIG_SYS_CBSIZE
- 1;
430 local_args
[0] = argv
[0];
431 local_args
[1] = argv
[1];
432 local_args
[2] = NULL
;
433 local_args
[3] = NULL
;
435 /* Check the syntax */
438 return cmd_usage(cmdtp
);
440 case 2: /* env_ask envname */
441 sprintf(message
, "Please enter '%s':", argv
[1]);
444 case 3: /* env_ask envname size */
445 sprintf(message
, "Please enter '%s':", argv
[1]);
446 size
= simple_strtoul(argv
[2], NULL
, 10);
449 default: /* env_ask envname message1 ... messagen size */
450 for (i
= 2, pos
= 0; i
< argc
- 1; i
++) {
452 message
[pos
++] = ' ';
454 strcpy(message
+ pos
, argv
[i
]);
455 pos
+= strlen(argv
[i
]);
459 size
= simple_strtoul(argv
[argc
- 1], NULL
, 10);
463 if (size
>= CONFIG_SYS_CBSIZE
)
464 size
= CONFIG_SYS_CBSIZE
- 1;
469 /* prompt for input */
470 len
= readline(message
);
473 console_buffer
[size
] = '\0';
476 if (console_buffer
[0] != '\0') {
477 local_args
[2] = console_buffer
;
481 /* Continue calling setenv code */
482 return _do_env_set(flag
, len
, local_args
);
487 * Interactively edit an environment variable
489 #if defined(CONFIG_CMD_EDITENV)
490 int do_env_edit(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
492 char buffer
[CONFIG_SYS_CBSIZE
];
496 return cmd_usage(cmdtp
);
498 /* Set read buffer to initial value or empty sting */
499 init_val
= getenv(argv
[1]);
501 sprintf(buffer
, "%s", init_val
);
505 readline_into_buffer("edit: ", buffer
, 0);
507 return setenv(argv
[1], buffer
);
509 #endif /* CONFIG_CMD_EDITENV */
512 * Look up variable from environment,
513 * return address of storage for that variable,
514 * or NULL if not found
516 char *getenv(const char *name
)
518 if (gd
->flags
& GD_FLG_ENV_READY
) { /* after import into hashtable */
525 hsearch_r(e
, FIND
, &ep
, &env_htab
);
527 return ep
? ep
->data
: NULL
;
530 /* restricted capabilities before import */
531 if (getenv_f(name
, (char *)(gd
->env_buf
), sizeof(gd
->env_buf
)) > 0)
532 return (char *)(gd
->env_buf
);
538 * Look up variable from environment for restricted C runtime env.
540 int getenv_f(const char *name
, char *buf
, unsigned len
)
544 for (i
= 0; env_get_char(i
) != '\0'; i
= nxt
+ 1) {
547 for (nxt
= i
; env_get_char(nxt
) != '\0'; ++nxt
) {
548 if (nxt
>= CONFIG_ENV_SIZE
)
552 val
= envmatch((uchar
*)name
, i
);
556 /* found; copy out */
557 for (n
= 0; n
< len
; ++n
, ++buf
) {
558 *buf
= env_get_char(val
++);
566 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)
596 int do_env_save(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
598 printf("Saving Environment to %s...\n", env_name_spec
);
600 return saveenv() ? 1 : 0;
604 saveenv
, 1, 0, do_env_save
,
605 "save environment variables to persistent storage",
612 * Match a name / name=value pair
614 * s1 is either a simple 'name', or a 'name=value' pair.
615 * i2 is the environment index for a 'name2=value2' pair.
616 * If the names match, return the index for the value2, else -1.
618 int envmatch(uchar
*s1
, int i2
)
620 while (*s1
== env_get_char(i2
++))
624 if (*s1
== '\0' && env_get_char(i2
-1) == '=')
630 static int do_env_default(cmd_tbl_t
*cmdtp
, int flag
,
631 int argc
, char * const argv
[])
633 if (argc
!= 2 || strcmp(argv
[1], "-f") != 0)
634 return cmd_usage(cmdtp
);
636 set_default_env("## Resetting to default environment\n");
640 static int do_env_delete(cmd_tbl_t
*cmdtp
, int flag
,
641 int argc
, char * const argv
[])
643 printf("Not implemented yet\n");
647 #ifdef CONFIG_CMD_EXPORTENV
649 * env export [-t | -b | -c] [-s size] addr [var ...]
650 * -t: export as text format; if size is given, data will be
651 * padded with '\0' bytes; if not, one terminating '\0'
652 * will be added (which is included in the "filesize"
653 * setting so you can for exmple copy this to flash and
654 * keep the termination).
655 * -b: export as binary format (name=value pairs separated by
656 * '\0', list end marked by double "\0\0")
657 * -c: export as checksum protected environment format as
658 * used for example by "saveenv" command
660 * size of output buffer
661 * addr: memory address where environment gets stored
662 * var... List of variable names that get included into the
663 * export. Without arguments, the whole environment gets
666 * With "-c" and size is NOT given, then the export command will
667 * format the data as currently used for the persistent storage,
668 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
669 * prepend a valid CRC32 checksum and, in case of resundant
670 * environment, a "current" redundancy flag. If size is given, this
671 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
672 * checksum and redundancy flag will be inserted.
674 * With "-b" and "-t", always only the real data (including a
675 * terminating '\0' byte) will be written; here the optional size
676 * argument will be used to make sure not to overflow the user
677 * provided buffer; the command will abort if the size is not
678 * sufficient. Any remainign space will be '\0' padded.
680 * On successful return, the variable "filesize" will be set.
681 * Note that filesize includes the trailing/terminating '\0' byte(s).
683 * Usage szenario: create a text snapshot/backup of the current settings:
685 * => env export -t 100000
686 * => era ${backup_addr} +${filesize}
687 * => cp.b 100000 ${backup_addr} ${filesize}
689 * Re-import this snapshot, deleting all other settings:
691 * => env import -d -t ${backup_addr}
693 static int do_env_export(cmd_tbl_t
*cmdtp
, int flag
,
694 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", errno
);
756 sprintf(buf
, "%zX", (size_t)len
);
757 setenv("filesize", buf
);
762 envp
= (env_t
*)addr
;
764 if (chk
) /* export as checksum protected block */
765 res
= (char *)envp
->data
;
766 else /* export as raw binary data */
769 len
= hexport_r(&env_htab
, '\0', &res
, ENV_SIZE
, argc
, argv
);
771 error("Cannot export environment: errno = %d\n", errno
);
776 envp
->crc
= crc32(0, envp
->data
, ENV_SIZE
);
777 #ifdef CONFIG_ENV_ADDR_REDUND
778 envp
->flags
= ACTIVE_FLAG
;
781 sprintf(buf
, "%zX", (size_t)(len
+ offsetof(env_t
, data
)));
782 setenv("filesize", buf
);
787 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd
);
792 #ifdef CONFIG_CMD_IMPORTENV
794 * env import [-d] [-t | -b | -c] addr [size]
795 * -d: delete existing environment before importing;
796 * otherwise overwrite / append to existion definitions
797 * -t: assume text format; either "size" must be given or the
798 * text data must be '\0' terminated
799 * -b: assume binary format ('\0' separated, "\0\0" terminated)
800 * -c: assume checksum protected environment format
801 * addr: memory address to read from
802 * size: length of input data; if missing, proper '\0'
803 * termination is mandatory
805 static int do_env_import(cmd_tbl_t
*cmdtp
, int flag
,
806 int argc
, char * const argv
[])
817 while (--argc
> 0 && **++argv
== '-') {
821 case 'b': /* raw binary format */
826 case 'c': /* external checksum format */
832 case 't': /* text format */
841 return cmd_usage(cmdtp
);
847 return cmd_usage(cmdtp
);
850 printf("## Warning: defaulting to text format\n");
852 addr
= (char *)simple_strtoul(argv
[0], NULL
, 16);
855 size
= simple_strtoul(argv
[1], NULL
, 16);
861 while (size
< MAX_ENV_SIZE
) {
862 if ((*s
== sep
) && (*(s
+1) == '\0'))
867 if (size
== MAX_ENV_SIZE
) {
868 printf("## Warning: Input data exceeds %d bytes"
869 " - truncated\n", MAX_ENV_SIZE
);
872 printf("## Info: input data size = %zu = 0x%zX\n", size
, size
);
877 env_t
*ep
= (env_t
*)addr
;
879 size
-= offsetof(env_t
, data
);
880 memcpy(&crc
, &ep
->crc
, sizeof(crc
));
882 if (crc32(0, ep
->data
, size
) != crc
) {
883 puts("## Error: bad CRC, import failed\n");
886 addr
= (char *)ep
->data
;
889 if (himport_r(&env_htab
, addr
, size
, sep
, del
? 0 : H_NOCLEAR
) == 0) {
890 error("Environment import failed: errno = %d\n", errno
);
893 gd
->flags
|= GD_FLG_ENV_READY
;
898 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
905 * New command line interface: "env" command with subcommands
907 static cmd_tbl_t cmd_env_sub
[] = {
908 #if defined(CONFIG_CMD_ASKENV)
909 U_BOOT_CMD_MKENT(ask
, CONFIG_SYS_MAXARGS
, 1, do_env_ask
, "", ""),
911 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default
, "", ""),
912 U_BOOT_CMD_MKENT(delete, 2, 0, do_env_delete
, "", ""),
913 #if defined(CONFIG_CMD_EDITENV)
914 U_BOOT_CMD_MKENT(edit
, 2, 0, do_env_edit
, "", ""),
916 #if defined(CONFIG_CMD_EXPORTENV)
917 U_BOOT_CMD_MKENT(export
, 4, 0, do_env_export
, "", ""),
919 #if defined(CONFIG_CMD_GREPENV)
920 U_BOOT_CMD_MKENT(grep
, CONFIG_SYS_MAXARGS
, 1, do_env_grep
, "", ""),
922 #if defined(CONFIG_CMD_IMPORTENV)
923 U_BOOT_CMD_MKENT(import
, 5, 0, do_env_import
, "", ""),
925 U_BOOT_CMD_MKENT(print
, CONFIG_SYS_MAXARGS
, 1, do_env_print
, "", ""),
926 #if defined(CONFIG_CMD_RUN)
927 U_BOOT_CMD_MKENT(run
, CONFIG_SYS_MAXARGS
, 1, do_run
, "", ""),
929 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
930 U_BOOT_CMD_MKENT(save
, 1, 0, do_env_save
, "", ""),
932 U_BOOT_CMD_MKENT(set
, CONFIG_SYS_MAXARGS
, 0, do_env_set
, "", ""),
935 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
938 fixup_cmdtable(cmd_env_sub
, ARRAY_SIZE(cmd_env_sub
));
942 static int do_env(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
947 return cmd_usage(cmdtp
);
949 /* drop initial "env" arg */
953 cp
= find_cmd_tbl(argv
[0], cmd_env_sub
, ARRAY_SIZE(cmd_env_sub
));
956 return cp
->cmd(cmdtp
, flag
, argc
, argv
);
958 return cmd_usage(cmdtp
);
962 env
, CONFIG_SYS_MAXARGS
, 1, do_env
,
963 "environment handling commands",
964 #if defined(CONFIG_CMD_ASKENV)
965 "ask name [message] [size] - ask for environment variable\nenv "
967 "default -f - reset default environment\n"
968 #if defined(CONFIG_CMD_EDITENV)
969 "env edit name - edit environment variable\n"
971 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
972 #if defined(CONFIG_CMD_GREPENV)
973 "env grep string [...] - search environment\n"
975 "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
976 "env print [name ...] - print environment\n"
977 #if defined(CONFIG_CMD_RUN)
978 "env run var [...] - run commands in an environment variable\n"
980 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
981 "env save - save environment\n"
983 "env set [-f] name [arg ...]\n"
987 * Old command line interface, kept for compatibility
990 #if defined(CONFIG_CMD_EDITENV)
992 editenv
, 2, 0, do_env_edit
,
993 "edit environment variable",
995 " - edit environment variable 'name'",
1000 U_BOOT_CMD_COMPLETE(
1001 printenv
, CONFIG_SYS_MAXARGS
, 1, do_env_print
,
1002 "print environment variables",
1003 "\n - print values of all environment variables\n"
1004 "printenv name ...\n"
1005 " - print value of environment variable 'name'",
1009 #ifdef CONFIG_CMD_GREPENV
1010 U_BOOT_CMD_COMPLETE(
1011 grepenv
, CONFIG_SYS_MAXARGS
, 0, do_env_grep
,
1012 "search environment variables",
1014 " - list environment name=value pairs matching 'string'",
1019 U_BOOT_CMD_COMPLETE(
1020 setenv
, CONFIG_SYS_MAXARGS
, 0, do_env_set
,
1021 "set environment variables",
1023 " - set environment variable 'name' to 'value ...'\n"
1025 " - delete environment variable 'name'",
1029 #if defined(CONFIG_CMD_ASKENV)
1032 askenv
, CONFIG_SYS_MAXARGS
, 1, do_env_ask
,
1033 "get environment variables from stdin",
1034 "name [message] [size]\n"
1035 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1037 " - get environment variable 'name' from stdin\n"
1038 "askenv name size\n"
1039 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1040 "askenv name [message] size\n"
1041 " - display 'message' string and get environment variable 'name'"
1042 "from stdin (max 'size' chars)"
1046 #if defined(CONFIG_CMD_RUN)
1047 U_BOOT_CMD_COMPLETE(
1048 run
, CONFIG_SYS_MAXARGS
, 1, do_run
,
1049 "run commands in an environment variable",
1051 " - run the commands in the environment variable(s) 'var'",