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
);
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 int do_env_print (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
145 /* print all env vars */
146 rcode
= env_print(NULL
);
149 printf("\nEnvironment size: %d/%ld bytes\n",
150 rcode
, (ulong
)ENV_SIZE
);
154 /* print selected env vars */
155 for (i
= 1; i
< argc
; ++i
) {
156 int rc
= env_print(argv
[i
]);
158 printf("## Error: \"%s\" not defined\n", argv
[i
]);
166 #ifdef CONFIG_CMD_GREPENV
167 static int do_env_grep(cmd_tbl_t
*cmdtp
, int flag
,
168 int argc
, char * const argv
[])
171 unsigned char matched
[env_htab
.size
/ 8];
172 int rcode
= 1, arg
= 1, idx
;
175 return CMD_RET_USAGE
;
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);
197 #endif /* CONFIG_SPL_BUILD */
200 * Perform consistency checking before setting, replacing, or deleting an
201 * environment variable, then (if successful) apply the changes to internals so
202 * to make them effective. Code for this function was taken out of
203 * _do_env_set(), which now calls it instead.
204 * Also called as a callback function by himport_r().
205 * Returns 0 in case of success, 1 in case of failure.
206 * When (flag & H_FORCE) is set, do not print out any error message and force
207 * overwriting of write-once variables.
210 int env_check_apply(const char *name
, const char *oldval
,
211 const char *newval
, int flag
)
215 /* Default value for NULL to protect string-manipulating functions */
216 newval
= newval
? : "";
218 /* Check for console redirection */
219 if (strcmp(name
, "stdin") == 0)
221 else if (strcmp(name
, "stdout") == 0)
223 else if (strcmp(name
, "stderr") == 0)
227 if ((newval
== NULL
) || (*newval
== '\0')) {
228 /* We cannot delete stdin/stdout/stderr */
229 if ((flag
& H_FORCE
) == 0)
230 printf("Can't delete \"%s\"\n", name
);
234 #ifdef CONFIG_CONSOLE_MUX
235 if (iomux_doenv(console
, newval
))
238 /* Try assigning specified device */
239 if (console_assign(console
, newval
) < 0)
241 #endif /* CONFIG_CONSOLE_MUX */
245 * Some variables like "ethaddr" and "serial#" can be set only once and
246 * cannot be deleted, unless CONFIG_ENV_OVERWRITE is defined.
248 #ifndef CONFIG_ENV_OVERWRITE
249 if (oldval
!= NULL
&& /* variable exists */
250 (flag
& H_FORCE
) == 0) { /* and we are not forced */
251 if (strcmp(name
, "serial#") == 0 ||
252 (strcmp(name
, "ethaddr") == 0
253 #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
254 && strcmp(oldval
, __stringify(CONFIG_ETHADDR
)) != 0
255 #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
257 printf("Can't overwrite \"%s\"\n", name
);
263 * When we change baudrate, or we are doing an env default -a
264 * (which will erase all variables prior to calling this),
265 * we want the baudrate to actually change - for real.
267 if (oldval
!= NULL
|| /* variable exists */
268 (flag
& H_NOCLEAR
) == 0) { /* or env is clear */
270 * Switch to new baudrate if new baudrate is supported
272 if (strcmp(name
, "baudrate") == 0) {
273 int baudrate
= simple_strtoul(newval
, NULL
, 10);
275 for (i
= 0; i
< N_BAUDRATES
; ++i
) {
276 if (baudrate
== baudrate_table
[i
])
279 if (i
== N_BAUDRATES
) {
280 if ((flag
& H_FORCE
) == 0)
281 printf("## Baudrate %d bps not "
282 "supported\n", baudrate
);
285 if (gd
->baudrate
== baudrate
) {
286 /* If unchanged, we just say it's OK */
289 printf("## Switch baudrate to %d bps and"
290 "press ENTER ...\n", baudrate
);
292 gd
->baudrate
= baudrate
;
293 #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2)
294 gd
->bd
->bi_baudrate
= baudrate
;
299 while (getc() != '\r')
305 * Some variables should be updated when the corresponding
306 * entry in the environment is changed
308 if (strcmp(name
, "loadaddr") == 0) {
309 load_addr
= simple_strtoul(newval
, NULL
, 16);
312 #if defined(CONFIG_CMD_NET)
313 else if (strcmp(name
, "bootfile") == 0) {
314 copy_filename(BootFile
, newval
, sizeof(BootFile
));
322 * Set a new environment variable,
323 * or replace or delete an existing one.
325 int _do_env_set(int flag
, int argc
, char * const argv
[])
328 char *name
, *value
, *s
;
334 if (strchr(name
, '=')) {
335 printf("## Error: illegal character '='"
336 "in variable name \"%s\"\n", name
);
342 * search if variable with this name already exists
346 hsearch_r(e
, FIND
, &ep
, &env_htab
);
349 * Perform requested checks. Notice how since we are overwriting
350 * a single variable, we need to set H_NOCLEAR
352 if (env_check_apply(name
, ep
? ep
->data
: NULL
, value
, H_NOCLEAR
)) {
353 debug("check function did not approve, refusing\n");
358 if (argc
< 3 || argv
[2] == NULL
) {
359 int rc
= hdelete_r(name
, &env_htab
, 0);
364 * Insert / replace new value
366 for (i
= 2, len
= 0; i
< argc
; ++i
)
367 len
+= strlen(argv
[i
]) + 1;
371 printf("## Can't malloc %d bytes\n", len
);
374 for (i
= 2, s
= value
; i
< argc
; ++i
) {
377 while ((*s
++ = *v
++) != '\0')
386 hsearch_r(e
, ENTER
, &ep
, &env_htab
);
389 printf("## Error inserting \"%s\" variable, errno=%d\n",
397 int setenv(const char *varname
, const char *varvalue
)
399 const char * const argv
[4] = { "setenv", varname
, varvalue
, NULL
};
401 if (varvalue
== NULL
|| varvalue
[0] == '\0')
402 return _do_env_set(0, 2, (char * const *)argv
);
404 return _do_env_set(0, 3, (char * const *)argv
);
408 * Set an environment variable to an integer value
410 * @param varname Environmet variable to set
411 * @param value Value to set it to
412 * @return 0 if ok, 1 on error
414 int setenv_ulong(const char *varname
, ulong value
)
416 /* TODO: this should be unsigned */
417 char *str
= simple_itoa(value
);
419 return setenv(varname
, str
);
423 * Set an environment variable to an address in hex
425 * @param varname Environmet variable to set
426 * @param addr Value to set it to
427 * @return 0 if ok, 1 on error
429 int setenv_addr(const char *varname
, const void *addr
)
433 sprintf(str
, "%lx", (uintptr_t)addr
);
434 return setenv(varname
, str
);
437 #ifndef CONFIG_SPL_BUILD
438 int do_env_set(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
441 return CMD_RET_USAGE
;
443 return _do_env_set(flag
, argc
, argv
);
447 * Prompt for environment variable
449 #if defined(CONFIG_CMD_ASKENV)
450 int do_env_ask(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
452 char message
[CONFIG_SYS_CBSIZE
];
453 int size
= CONFIG_SYS_CBSIZE
- 1;
457 local_args
[0] = argv
[0];
458 local_args
[1] = argv
[1];
459 local_args
[2] = NULL
;
460 local_args
[3] = NULL
;
462 /* Check the syntax */
465 return CMD_RET_USAGE
;
467 case 2: /* env_ask envname */
468 sprintf(message
, "Please enter '%s':", argv
[1]);
471 case 3: /* env_ask envname size */
472 sprintf(message
, "Please enter '%s':", argv
[1]);
473 size
= simple_strtoul(argv
[2], NULL
, 10);
476 default: /* env_ask envname message1 ... messagen size */
477 for (i
= 2, pos
= 0; i
< argc
- 1; i
++) {
479 message
[pos
++] = ' ';
481 strcpy(message
+ pos
, argv
[i
]);
482 pos
+= strlen(argv
[i
]);
486 size
= simple_strtoul(argv
[argc
- 1], NULL
, 10);
490 if (size
>= CONFIG_SYS_CBSIZE
)
491 size
= CONFIG_SYS_CBSIZE
- 1;
496 /* prompt for input */
497 len
= readline(message
);
500 console_buffer
[size
] = '\0';
503 if (console_buffer
[0] != '\0') {
504 local_args
[2] = console_buffer
;
508 /* Continue calling setenv code */
509 return _do_env_set(flag
, len
, local_args
);
514 * Interactively edit an environment variable
516 #if defined(CONFIG_CMD_EDITENV)
517 int do_env_edit(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
519 char buffer
[CONFIG_SYS_CBSIZE
];
523 return CMD_RET_USAGE
;
525 /* Set read buffer to initial value or empty sting */
526 init_val
= getenv(argv
[1]);
528 sprintf(buffer
, "%s", init_val
);
532 readline_into_buffer("edit: ", buffer
, 0);
534 return setenv(argv
[1], buffer
);
536 #endif /* CONFIG_CMD_EDITENV */
537 #endif /* CONFIG_SPL_BUILD */
540 * Look up variable from environment,
541 * return address of storage for that variable,
542 * or NULL if not found
544 char *getenv(const char *name
)
546 if (gd
->flags
& GD_FLG_ENV_READY
) { /* after import into hashtable */
553 hsearch_r(e
, FIND
, &ep
, &env_htab
);
555 return ep
? ep
->data
: NULL
;
558 /* restricted capabilities before import */
559 if (getenv_f(name
, (char *)(gd
->env_buf
), sizeof(gd
->env_buf
)) > 0)
560 return (char *)(gd
->env_buf
);
566 * Look up variable from environment for restricted C runtime env.
568 int getenv_f(const char *name
, char *buf
, unsigned len
)
572 for (i
= 0; env_get_char(i
) != '\0'; i
= nxt
+ 1) {
575 for (nxt
= i
; env_get_char(nxt
) != '\0'; ++nxt
) {
576 if (nxt
>= CONFIG_ENV_SIZE
)
580 val
= envmatch((uchar
*)name
, i
);
584 /* found; copy out */
585 for (n
= 0; n
< len
; ++n
, ++buf
) {
586 *buf
= env_get_char(val
++);
594 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
604 * Decode the integer value of an environment variable and return it.
606 * @param name Name of environemnt variable
607 * @param base Number base to use (normally 10, or 16 for hex)
608 * @param default_val Default value to return if the variable is not
610 * @return the decoded value, or default_val if not found
612 ulong
getenv_ulong(const char *name
, int base
, ulong default_val
)
615 * We can use getenv() here, even before relocation, since the
616 * environment variable value is an integer and thus short.
618 const char *str
= getenv(name
);
620 return str
? simple_strtoul(str
, NULL
, base
) : default_val
;
623 #ifndef CONFIG_SPL_BUILD
624 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
625 int do_env_save(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
627 printf("Saving Environment to %s...\n", env_name_spec
);
629 return saveenv() ? 1 : 0;
633 saveenv
, 1, 0, do_env_save
,
634 "save environment variables to persistent storage",
638 #endif /* CONFIG_SPL_BUILD */
642 * Match a name / name=value pair
644 * s1 is either a simple 'name', or a 'name=value' pair.
645 * i2 is the environment index for a 'name2=value2' pair.
646 * If the names match, return the index for the value2, else -1.
648 int envmatch(uchar
*s1
, int i2
)
653 while (*s1
== env_get_char(i2
++))
657 if (*s1
== '\0' && env_get_char(i2
-1) == '=')
663 #ifndef CONFIG_SPL_BUILD
664 static int do_env_default(cmd_tbl_t
*cmdtp
, int __flag
,
665 int argc
, char * const argv
[])
667 int all
= 0, flag
= 0;
669 debug("Initial value for argc=%d\n", argc
);
670 while (--argc
> 0 && **++argv
== '-') {
675 case 'a': /* default all */
678 case 'f': /* force */
682 return cmd_usage(cmdtp
);
686 debug("Final value for argc=%d\n", argc
);
687 if (all
&& (argc
== 0)) {
688 /* Reset the whole environment */
689 set_default_env("## Resetting to default environment\n");
692 if (!all
&& (argc
> 0)) {
693 /* Reset individual variables */
694 set_default_vars(argc
, argv
);
698 return cmd_usage(cmdtp
);
701 static int do_env_delete(cmd_tbl_t
*cmdtp
, int flag
,
702 int argc
, char * const argv
[])
704 printf("Not implemented yet\n");
708 #ifdef CONFIG_CMD_EXPORTENV
710 * env export [-t | -b | -c] [-s size] addr [var ...]
711 * -t: export as text format; if size is given, data will be
712 * padded with '\0' bytes; if not, one terminating '\0'
713 * will be added (which is included in the "filesize"
714 * setting so you can for exmple copy this to flash and
715 * keep the termination).
716 * -b: export as binary format (name=value pairs separated by
717 * '\0', list end marked by double "\0\0")
718 * -c: export as checksum protected environment format as
719 * used for example by "saveenv" command
721 * size of output buffer
722 * addr: memory address where environment gets stored
723 * var... List of variable names that get included into the
724 * export. Without arguments, the whole environment gets
727 * With "-c" and size is NOT given, then the export command will
728 * format the data as currently used for the persistent storage,
729 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
730 * prepend a valid CRC32 checksum and, in case of resundant
731 * environment, a "current" redundancy flag. If size is given, this
732 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
733 * checksum and redundancy flag will be inserted.
735 * With "-b" and "-t", always only the real data (including a
736 * terminating '\0' byte) will be written; here the optional size
737 * argument will be used to make sure not to overflow the user
738 * provided buffer; the command will abort if the size is not
739 * sufficient. Any remainign space will be '\0' padded.
741 * On successful return, the variable "filesize" will be set.
742 * Note that filesize includes the trailing/terminating '\0' byte(s).
744 * Usage szenario: create a text snapshot/backup of the current settings:
746 * => env export -t 100000
747 * => era ${backup_addr} +${filesize}
748 * => cp.b 100000 ${backup_addr} ${filesize}
750 * Re-import this snapshot, deleting all other settings:
752 * => env import -d -t ${backup_addr}
754 static int do_env_export(cmd_tbl_t
*cmdtp
, int flag
,
755 int argc
, char * const argv
[])
758 char *addr
, *cmd
, *res
;
768 while (--argc
> 0 && **++argv
== '-') {
772 case 'b': /* raw binary format */
777 case 'c': /* external checksum format */
783 case 's': /* size given */
785 return cmd_usage(cmdtp
);
786 size
= simple_strtoul(*++argv
, NULL
, 16);
788 case 't': /* text format */
794 return CMD_RET_USAGE
;
801 return CMD_RET_USAGE
;
803 addr
= (char *)simple_strtoul(argv
[0], NULL
, 16);
806 memset(addr
, '\0', size
);
811 if (sep
) { /* export as text file */
812 len
= hexport_r(&env_htab
, sep
, &addr
, size
, argc
, argv
);
814 error("Cannot export environment: errno = %d\n", errno
);
817 sprintf(buf
, "%zX", (size_t)len
);
818 setenv("filesize", buf
);
823 envp
= (env_t
*)addr
;
825 if (chk
) /* export as checksum protected block */
826 res
= (char *)envp
->data
;
827 else /* export as raw binary data */
830 len
= hexport_r(&env_htab
, '\0', &res
, ENV_SIZE
, argc
, argv
);
832 error("Cannot export environment: errno = %d\n", errno
);
837 envp
->crc
= crc32(0, envp
->data
, ENV_SIZE
);
838 #ifdef CONFIG_ENV_ADDR_REDUND
839 envp
->flags
= ACTIVE_FLAG
;
842 sprintf(buf
, "%zX", (size_t)(len
+ offsetof(env_t
, data
)));
843 setenv("filesize", buf
);
848 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd
);
853 #ifdef CONFIG_CMD_IMPORTENV
855 * env import [-d] [-t | -b | -c] addr [size]
856 * -d: delete existing environment before importing;
857 * otherwise overwrite / append to existion definitions
858 * -t: assume text format; either "size" must be given or the
859 * text data must be '\0' terminated
860 * -b: assume binary format ('\0' separated, "\0\0" terminated)
861 * -c: assume checksum protected environment format
862 * addr: memory address to read from
863 * size: length of input data; if missing, proper '\0'
864 * termination is mandatory
866 static int do_env_import(cmd_tbl_t
*cmdtp
, int flag
,
867 int argc
, char * const argv
[])
878 while (--argc
> 0 && **++argv
== '-') {
882 case 'b': /* raw binary format */
887 case 'c': /* external checksum format */
893 case 't': /* text format */
902 return CMD_RET_USAGE
;
908 return CMD_RET_USAGE
;
911 printf("## Warning: defaulting to text format\n");
913 addr
= (char *)simple_strtoul(argv
[0], NULL
, 16);
916 size
= simple_strtoul(argv
[1], NULL
, 16);
922 while (size
< MAX_ENV_SIZE
) {
923 if ((*s
== sep
) && (*(s
+1) == '\0'))
928 if (size
== MAX_ENV_SIZE
) {
929 printf("## Warning: Input data exceeds %d bytes"
930 " - truncated\n", MAX_ENV_SIZE
);
933 printf("## Info: input data size = %zu = 0x%zX\n", size
, size
);
938 env_t
*ep
= (env_t
*)addr
;
940 size
-= offsetof(env_t
, data
);
941 memcpy(&crc
, &ep
->crc
, sizeof(crc
));
943 if (crc32(0, ep
->data
, size
) != crc
) {
944 puts("## Error: bad CRC, import failed\n");
947 addr
= (char *)ep
->data
;
950 if (himport_r(&env_htab
, addr
, size
, sep
, del
? 0 : H_NOCLEAR
,
951 0, NULL
, 0 /* do_apply */) == 0) {
952 error("Environment import failed: errno = %d\n", errno
);
955 gd
->flags
|= GD_FLG_ENV_READY
;
960 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
967 * New command line interface: "env" command with subcommands
969 static cmd_tbl_t cmd_env_sub
[] = {
970 #if defined(CONFIG_CMD_ASKENV)
971 U_BOOT_CMD_MKENT(ask
, CONFIG_SYS_MAXARGS
, 1, do_env_ask
, "", ""),
973 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default
, "", ""),
974 U_BOOT_CMD_MKENT(delete, 2, 0, do_env_delete
, "", ""),
975 #if defined(CONFIG_CMD_EDITENV)
976 U_BOOT_CMD_MKENT(edit
, 2, 0, do_env_edit
, "", ""),
978 #if defined(CONFIG_CMD_EXPORTENV)
979 U_BOOT_CMD_MKENT(export
, 4, 0, do_env_export
, "", ""),
981 #if defined(CONFIG_CMD_GREPENV)
982 U_BOOT_CMD_MKENT(grep
, CONFIG_SYS_MAXARGS
, 1, do_env_grep
, "", ""),
984 #if defined(CONFIG_CMD_IMPORTENV)
985 U_BOOT_CMD_MKENT(import
, 5, 0, do_env_import
, "", ""),
987 U_BOOT_CMD_MKENT(print
, CONFIG_SYS_MAXARGS
, 1, do_env_print
, "", ""),
988 #if defined(CONFIG_CMD_RUN)
989 U_BOOT_CMD_MKENT(run
, CONFIG_SYS_MAXARGS
, 1, do_run
, "", ""),
991 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
992 U_BOOT_CMD_MKENT(save
, 1, 0, do_env_save
, "", ""),
994 U_BOOT_CMD_MKENT(set
, CONFIG_SYS_MAXARGS
, 0, do_env_set
, "", ""),
997 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
1000 fixup_cmdtable(cmd_env_sub
, ARRAY_SIZE(cmd_env_sub
));
1004 static int do_env(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
1009 return CMD_RET_USAGE
;
1011 /* drop initial "env" arg */
1015 cp
= find_cmd_tbl(argv
[0], cmd_env_sub
, ARRAY_SIZE(cmd_env_sub
));
1018 return cp
->cmd(cmdtp
, flag
, argc
, argv
);
1020 return CMD_RET_USAGE
;
1024 env
, CONFIG_SYS_MAXARGS
, 1, do_env
,
1025 "environment handling commands",
1026 #if defined(CONFIG_CMD_ASKENV)
1027 "ask name [message] [size] - ask for environment variable\nenv "
1029 "default [-f] -a - [forcibly] reset default environment\n"
1030 "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
1031 #if defined(CONFIG_CMD_EDITENV)
1032 "env edit name - edit environment variable\n"
1034 #if defined(CONFIG_CMD_EXPORTENV)
1035 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
1037 #if defined(CONFIG_CMD_GREPENV)
1038 "env grep string [...] - search environment\n"
1040 #if defined(CONFIG_CMD_IMPORTENV)
1041 "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
1043 "env print [name ...] - print environment\n"
1044 #if defined(CONFIG_CMD_RUN)
1045 "env run var [...] - run commands in an environment variable\n"
1047 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1048 "env save - save environment\n"
1050 "env set [-f] name [arg ...]\n"
1054 * Old command line interface, kept for compatibility
1057 #if defined(CONFIG_CMD_EDITENV)
1058 U_BOOT_CMD_COMPLETE(
1059 editenv
, 2, 0, do_env_edit
,
1060 "edit environment variable",
1062 " - edit environment variable 'name'",
1067 U_BOOT_CMD_COMPLETE(
1068 printenv
, CONFIG_SYS_MAXARGS
, 1, do_env_print
,
1069 "print environment variables",
1070 "\n - print values of all environment variables\n"
1071 "printenv name ...\n"
1072 " - print value of environment variable 'name'",
1076 #ifdef CONFIG_CMD_GREPENV
1077 U_BOOT_CMD_COMPLETE(
1078 grepenv
, CONFIG_SYS_MAXARGS
, 0, do_env_grep
,
1079 "search environment variables",
1081 " - list environment name=value pairs matching 'string'",
1086 U_BOOT_CMD_COMPLETE(
1087 setenv
, CONFIG_SYS_MAXARGS
, 0, do_env_set
,
1088 "set environment variables",
1090 " - set environment variable 'name' to 'value ...'\n"
1092 " - delete environment variable 'name'",
1096 #if defined(CONFIG_CMD_ASKENV)
1099 askenv
, CONFIG_SYS_MAXARGS
, 1, do_env_ask
,
1100 "get environment variables from stdin",
1101 "name [message] [size]\n"
1102 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1104 " - get environment variable 'name' from stdin\n"
1105 "askenv name size\n"
1106 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1107 "askenv name [message] size\n"
1108 " - display 'message' string and get environment variable 'name'"
1109 "from stdin (max 'size' chars)"
1113 #if defined(CONFIG_CMD_RUN)
1114 U_BOOT_CMD_COMPLETE(
1115 run
, CONFIG_SYS_MAXARGS
, 1, do_run
,
1116 "run commands in an environment variable",
1118 " - run the commands in the environment variable(s) 'var'",
1122 #endif /* CONFIG_SPL_BUILD */