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>
50 #include <linux/stddef.h>
51 #include <asm/byteorder.h>
53 DECLARE_GLOBAL_DATA_PTR
;
55 #if !defined(CONFIG_ENV_IS_IN_EEPROM) && \
56 !defined(CONFIG_ENV_IS_IN_FLASH) && \
57 !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \
58 !defined(CONFIG_ENV_IS_IN_MMC) && \
59 !defined(CONFIG_ENV_IS_IN_FAT) && \
60 !defined(CONFIG_ENV_IS_IN_NAND) && \
61 !defined(CONFIG_ENV_IS_IN_NVRAM) && \
62 !defined(CONFIG_ENV_IS_IN_ONENAND) && \
63 !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \
64 !defined(CONFIG_ENV_IS_IN_REMOTE) && \
65 !defined(CONFIG_ENV_IS_NOWHERE)
66 # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\
67 SPI_FLASH|NVRAM|MMC|FAT|REMOTE} or CONFIG_ENV_IS_NOWHERE
71 * Maximum expected input data size for import command
73 #define MAX_ENV_SIZE (1 << 20) /* 1 MiB */
76 * This variable is incremented on each do_env_set(), so it can
77 * be used via get_env_id() as an indication, if the environment
78 * has changed or not. So it is possible to reread an environment
79 * variable only if the environment was changed ... done so for
80 * example in NetInitLoop()
82 static int env_id
= 1;
89 #ifndef CONFIG_SPL_BUILD
91 * Command interface: print one or all environment variables
93 * Returns 0 in case of error, or length of printed string
95 static int env_print(char *name
, int flag
)
100 if (name
) { /* print a single name */
105 hsearch_r(e
, FIND
, &ep
, &env_htab
, flag
);
108 len
= printf("%s=%s\n", ep
->key
, ep
->data
);
112 /* print whole list */
113 len
= hexport_r(&env_htab
, '\n', flag
, &res
, 0, 0, NULL
);
121 /* should never happen */
125 static int do_env_print(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
130 int env_flag
= H_HIDE_DOT
;
132 if (argc
> 1 && argv
[1][0] == '-' && argv
[1][1] == 'a') {
135 env_flag
&= ~H_HIDE_DOT
;
139 /* print all env vars */
140 rcode
= env_print(NULL
, env_flag
);
143 printf("\nEnvironment size: %d/%ld bytes\n",
144 rcode
, (ulong
)ENV_SIZE
);
148 /* print selected env vars */
149 env_flag
&= ~H_HIDE_DOT
;
150 for (i
= 1; i
< argc
; ++i
) {
151 int rc
= env_print(argv
[i
], env_flag
);
153 printf("## Error: \"%s\" not defined\n", argv
[i
]);
161 #ifdef CONFIG_CMD_GREPENV
162 static int do_env_grep(cmd_tbl_t
*cmdtp
, int flag
,
163 int argc
, char * const argv
[])
166 unsigned char matched
[env_htab
.size
/ 8];
167 int rcode
= 1, arg
= 1, idx
;
170 return CMD_RET_USAGE
;
172 memset(matched
, 0, env_htab
.size
/ 8);
174 while (arg
<= argc
) {
176 while ((idx
= hstrstr_r(argv
[arg
], idx
, &match
, &env_htab
))) {
177 if (!(matched
[idx
/ 8] & (1 << (idx
& 7)))) {
183 matched
[idx
/ 8] |= 1 << (idx
& 7);
192 #endif /* CONFIG_SPL_BUILD */
195 * Set a new environment variable,
196 * or replace or delete an existing one.
198 static int _do_env_set(int flag
, int argc
, char * const argv
[])
201 char *name
, *value
, *s
;
203 int env_flag
= H_INTERACTIVE
;
205 debug("Initial value for argc=%d\n", argc
);
206 while (argc
> 1 && **(argv
+ 1) == '-') {
212 case 'f': /* force */
216 return CMD_RET_USAGE
;
220 debug("Final value for argc=%d\n", argc
);
224 if (strchr(name
, '=')) {
225 printf("## Error: illegal character '='"
226 "in variable name \"%s\"\n", name
);
233 if (argc
< 3 || argv
[2] == NULL
) {
234 int rc
= hdelete_r(name
, &env_htab
, env_flag
);
239 * Insert / replace new value
241 for (i
= 2, len
= 0; i
< argc
; ++i
)
242 len
+= strlen(argv
[i
]) + 1;
246 printf("## Can't malloc %d bytes\n", len
);
249 for (i
= 2, s
= value
; i
< argc
; ++i
) {
252 while ((*s
++ = *v
++) != '\0')
261 hsearch_r(e
, ENTER
, &ep
, &env_htab
, env_flag
);
264 printf("## Error inserting \"%s\" variable, errno=%d\n",
272 int setenv(const char *varname
, const char *varvalue
)
274 const char * const argv
[4] = { "setenv", varname
, varvalue
, NULL
};
276 if (varvalue
== NULL
|| varvalue
[0] == '\0')
277 return _do_env_set(0, 2, (char * const *)argv
);
279 return _do_env_set(0, 3, (char * const *)argv
);
283 * Set an environment variable to an integer value
285 * @param varname Environmet variable to set
286 * @param value Value to set it to
287 * @return 0 if ok, 1 on error
289 int setenv_ulong(const char *varname
, ulong value
)
291 /* TODO: this should be unsigned */
292 char *str
= simple_itoa(value
);
294 return setenv(varname
, str
);
298 * Set an environment variable to an address in hex
300 * @param varname Environmet variable to set
301 * @param addr Value to set it to
302 * @return 0 if ok, 1 on error
304 int setenv_addr(const char *varname
, const void *addr
)
308 sprintf(str
, "%lx", (uintptr_t)addr
);
309 return setenv(varname
, str
);
312 #ifndef CONFIG_SPL_BUILD
313 static int do_env_set(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
316 return CMD_RET_USAGE
;
318 return _do_env_set(flag
, argc
, argv
);
322 * Prompt for environment variable
324 #if defined(CONFIG_CMD_ASKENV)
325 int do_env_ask(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
327 char message
[CONFIG_SYS_CBSIZE
];
328 int size
= CONFIG_SYS_CBSIZE
- 1;
332 local_args
[0] = argv
[0];
333 local_args
[1] = argv
[1];
334 local_args
[2] = NULL
;
335 local_args
[3] = NULL
;
337 /* Check the syntax */
340 return CMD_RET_USAGE
;
342 case 2: /* env_ask envname */
343 sprintf(message
, "Please enter '%s':", argv
[1]);
346 case 3: /* env_ask envname size */
347 sprintf(message
, "Please enter '%s':", argv
[1]);
348 size
= simple_strtoul(argv
[2], NULL
, 10);
351 default: /* env_ask envname message1 ... messagen size */
352 for (i
= 2, pos
= 0; i
< argc
- 1; i
++) {
354 message
[pos
++] = ' ';
356 strcpy(message
+ pos
, argv
[i
]);
357 pos
+= strlen(argv
[i
]);
361 size
= simple_strtoul(argv
[argc
- 1], NULL
, 10);
365 if (size
>= CONFIG_SYS_CBSIZE
)
366 size
= CONFIG_SYS_CBSIZE
- 1;
371 /* prompt for input */
372 len
= readline(message
);
375 console_buffer
[size
] = '\0';
378 if (console_buffer
[0] != '\0') {
379 local_args
[2] = console_buffer
;
383 /* Continue calling setenv code */
384 return _do_env_set(flag
, len
, local_args
);
388 #if defined(CONFIG_CMD_ENV_CALLBACK)
389 static int print_static_binding(const char *var_name
, const char *callback_name
)
391 printf("\t%-20s %-20s\n", var_name
, callback_name
);
396 static int print_active_callback(ENTRY
*entry
)
398 struct env_clbk_tbl
*clbkp
;
402 if (entry
->callback
== NULL
)
405 /* look up the callback in the linker-list */
406 num_callbacks
= ll_entry_count(struct env_clbk_tbl
, env_clbk
);
407 for (i
= 0, clbkp
= ll_entry_start(struct env_clbk_tbl
, env_clbk
);
410 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
411 if (entry
->callback
== clbkp
->callback
+ gd
->reloc_off
)
413 if (entry
->callback
== clbkp
->callback
)
418 if (i
== num_callbacks
)
419 /* this should probably never happen, but just in case... */
420 printf("\t%-20s %p\n", entry
->key
, entry
->callback
);
422 printf("\t%-20s %-20s\n", entry
->key
, clbkp
->name
);
428 * Print the callbacks available and what they are bound to
430 int do_env_callback(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
432 struct env_clbk_tbl
*clbkp
;
436 /* Print the available callbacks */
437 puts("Available callbacks:\n");
438 puts("\tCallback Name\n");
439 puts("\t-------------\n");
440 num_callbacks
= ll_entry_count(struct env_clbk_tbl
, env_clbk
);
441 for (i
= 0, clbkp
= ll_entry_start(struct env_clbk_tbl
, env_clbk
);
444 printf("\t%s\n", clbkp
->name
);
447 /* Print the static bindings that may exist */
448 puts("Static callback bindings:\n");
449 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
450 printf("\t%-20s %-20s\n", "-------------", "-------------");
451 env_attr_walk(ENV_CALLBACK_LIST_STATIC
, print_static_binding
);
454 /* walk through each variable and print the callback if it has one */
455 puts("Active callback bindings:\n");
456 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
457 printf("\t%-20s %-20s\n", "-------------", "-------------");
458 hwalk_r(&env_htab
, print_active_callback
);
463 #if defined(CONFIG_CMD_ENV_FLAGS)
464 static int print_static_flags(const char *var_name
, const char *flags
)
466 enum env_flags_vartype type
= env_flags_parse_vartype(flags
);
467 enum env_flags_varaccess access
= env_flags_parse_varaccess(flags
);
469 printf("\t%-20s %-20s %-20s\n", var_name
,
470 env_flags_get_vartype_name(type
),
471 env_flags_get_varaccess_name(access
));
476 static int print_active_flags(ENTRY
*entry
)
478 enum env_flags_vartype type
;
479 enum env_flags_varaccess access
;
481 if (entry
->flags
== 0)
484 type
= (enum env_flags_vartype
)
485 (entry
->flags
& ENV_FLAGS_VARTYPE_BIN_MASK
);
486 access
= env_flags_parse_varaccess_from_binflags(entry
->flags
);
487 printf("\t%-20s %-20s %-20s\n", entry
->key
,
488 env_flags_get_vartype_name(type
),
489 env_flags_get_varaccess_name(access
));
495 * Print the flags available and what variables have flags
497 int do_env_flags(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
499 /* Print the available variable types */
500 printf("Available variable type flags (position %d):\n",
501 ENV_FLAGS_VARTYPE_LOC
);
502 puts("\tFlag\tVariable Type Name\n");
503 puts("\t----\t------------------\n");
504 env_flags_print_vartypes();
507 /* Print the available variable access types */
508 printf("Available variable access flags (position %d):\n",
509 ENV_FLAGS_VARACCESS_LOC
);
510 puts("\tFlag\tVariable Access Name\n");
511 puts("\t----\t--------------------\n");
512 env_flags_print_varaccess();
515 /* Print the static flags that may exist */
516 puts("Static flags:\n");
517 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
519 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
521 env_attr_walk(ENV_FLAGS_LIST_STATIC
, print_static_flags
);
524 /* walk through each variable and print the flags if non-default */
525 puts("Active flags:\n");
526 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
528 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
530 hwalk_r(&env_htab
, print_active_flags
);
536 * Interactively edit an environment variable
538 #if defined(CONFIG_CMD_EDITENV)
539 static int do_env_edit(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
542 char buffer
[CONFIG_SYS_CBSIZE
];
546 return CMD_RET_USAGE
;
548 /* Set read buffer to initial value or empty sting */
549 init_val
= getenv(argv
[1]);
551 sprintf(buffer
, "%s", init_val
);
555 readline_into_buffer("edit: ", buffer
, 0);
557 return setenv(argv
[1], buffer
);
559 #endif /* CONFIG_CMD_EDITENV */
560 #endif /* CONFIG_SPL_BUILD */
563 * Look up variable from environment,
564 * return address of storage for that variable,
565 * or NULL if not found
567 char *getenv(const char *name
)
569 if (gd
->flags
& GD_FLG_ENV_READY
) { /* after import into hashtable */
576 hsearch_r(e
, FIND
, &ep
, &env_htab
, 0);
578 return ep
? ep
->data
: NULL
;
581 /* restricted capabilities before import */
582 if (getenv_f(name
, (char *)(gd
->env_buf
), sizeof(gd
->env_buf
)) > 0)
583 return (char *)(gd
->env_buf
);
589 * Look up variable from environment for restricted C runtime env.
591 int getenv_f(const char *name
, char *buf
, unsigned len
)
595 for (i
= 0; env_get_char(i
) != '\0'; i
= nxt
+ 1) {
598 for (nxt
= i
; env_get_char(nxt
) != '\0'; ++nxt
) {
599 if (nxt
>= CONFIG_ENV_SIZE
)
603 val
= envmatch((uchar
*)name
, i
);
607 /* found; copy out */
608 for (n
= 0; n
< len
; ++n
, ++buf
) {
609 *buf
= env_get_char(val
++);
617 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
627 * Decode the integer value of an environment variable and return it.
629 * @param name Name of environemnt variable
630 * @param base Number base to use (normally 10, or 16 for hex)
631 * @param default_val Default value to return if the variable is not
633 * @return the decoded value, or default_val if not found
635 ulong
getenv_ulong(const char *name
, int base
, ulong default_val
)
638 * We can use getenv() here, even before relocation, since the
639 * environment variable value is an integer and thus short.
641 const char *str
= getenv(name
);
643 return str
? simple_strtoul(str
, NULL
, base
) : default_val
;
646 #ifndef CONFIG_SPL_BUILD
647 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
648 static int do_env_save(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
651 printf("Saving Environment to %s...\n", env_name_spec
);
653 return saveenv() ? 1 : 0;
657 saveenv
, 1, 0, do_env_save
,
658 "save environment variables to persistent storage",
662 #endif /* CONFIG_SPL_BUILD */
666 * Match a name / name=value pair
668 * s1 is either a simple 'name', or a 'name=value' pair.
669 * i2 is the environment index for a 'name2=value2' pair.
670 * If the names match, return the index for the value2, else -1.
672 int envmatch(uchar
*s1
, int i2
)
677 while (*s1
== env_get_char(i2
++))
681 if (*s1
== '\0' && env_get_char(i2
-1) == '=')
687 #ifndef CONFIG_SPL_BUILD
688 static int do_env_default(cmd_tbl_t
*cmdtp
, int __flag
,
689 int argc
, char * const argv
[])
691 int all
= 0, flag
= 0;
693 debug("Initial value for argc=%d\n", argc
);
694 while (--argc
> 0 && **++argv
== '-') {
699 case 'a': /* default all */
702 case 'f': /* force */
706 return cmd_usage(cmdtp
);
710 debug("Final value for argc=%d\n", argc
);
711 if (all
&& (argc
== 0)) {
712 /* Reset the whole environment */
713 set_default_env("## Resetting to default environment\n");
716 if (!all
&& (argc
> 0)) {
717 /* Reset individual variables */
718 set_default_vars(argc
, argv
);
722 return cmd_usage(cmdtp
);
725 static int do_env_delete(cmd_tbl_t
*cmdtp
, int flag
,
726 int argc
, char * const argv
[])
728 int env_flag
= H_INTERACTIVE
;
731 debug("Initial value for argc=%d\n", argc
);
732 while (argc
> 1 && **(argv
+ 1) == '-') {
738 case 'f': /* force */
742 return CMD_RET_USAGE
;
746 debug("Final value for argc=%d\n", argc
);
751 char *name
= *++argv
;
753 if (!hdelete_r(name
, &env_htab
, env_flag
))
760 #ifdef CONFIG_CMD_EXPORTENV
762 * env export [-t | -b | -c] [-s size] addr [var ...]
763 * -t: export as text format; if size is given, data will be
764 * padded with '\0' bytes; if not, one terminating '\0'
765 * will be added (which is included in the "filesize"
766 * setting so you can for exmple copy this to flash and
767 * keep the termination).
768 * -b: export as binary format (name=value pairs separated by
769 * '\0', list end marked by double "\0\0")
770 * -c: export as checksum protected environment format as
771 * used for example by "saveenv" command
773 * size of output buffer
774 * addr: memory address where environment gets stored
775 * var... List of variable names that get included into the
776 * export. Without arguments, the whole environment gets
779 * With "-c" and size is NOT given, then the export command will
780 * format the data as currently used for the persistent storage,
781 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
782 * prepend a valid CRC32 checksum and, in case of resundant
783 * environment, a "current" redundancy flag. If size is given, this
784 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
785 * checksum and redundancy flag will be inserted.
787 * With "-b" and "-t", always only the real data (including a
788 * terminating '\0' byte) will be written; here the optional size
789 * argument will be used to make sure not to overflow the user
790 * provided buffer; the command will abort if the size is not
791 * sufficient. Any remainign space will be '\0' padded.
793 * On successful return, the variable "filesize" will be set.
794 * Note that filesize includes the trailing/terminating '\0' byte(s).
796 * Usage szenario: create a text snapshot/backup of the current settings:
798 * => env export -t 100000
799 * => era ${backup_addr} +${filesize}
800 * => cp.b 100000 ${backup_addr} ${filesize}
802 * Re-import this snapshot, deleting all other settings:
804 * => env import -d -t ${backup_addr}
806 static int do_env_export(cmd_tbl_t
*cmdtp
, int flag
,
807 int argc
, char * const argv
[])
810 char *addr
, *cmd
, *res
;
820 while (--argc
> 0 && **++argv
== '-') {
824 case 'b': /* raw binary format */
829 case 'c': /* external checksum format */
835 case 's': /* size given */
837 return cmd_usage(cmdtp
);
838 size
= simple_strtoul(*++argv
, NULL
, 16);
840 case 't': /* text format */
846 return CMD_RET_USAGE
;
853 return CMD_RET_USAGE
;
855 addr
= (char *)simple_strtoul(argv
[0], NULL
, 16);
858 memset(addr
, '\0', size
);
863 if (sep
) { /* export as text file */
864 len
= hexport_r(&env_htab
, sep
, 0, &addr
, size
, argc
, argv
);
866 error("Cannot export environment: errno = %d\n", errno
);
869 sprintf(buf
, "%zX", (size_t)len
);
870 setenv("filesize", buf
);
875 envp
= (env_t
*)addr
;
877 if (chk
) /* export as checksum protected block */
878 res
= (char *)envp
->data
;
879 else /* export as raw binary data */
882 len
= hexport_r(&env_htab
, '\0', 0, &res
, ENV_SIZE
, argc
, argv
);
884 error("Cannot export environment: errno = %d\n", errno
);
889 envp
->crc
= crc32(0, envp
->data
, ENV_SIZE
);
890 #ifdef CONFIG_ENV_ADDR_REDUND
891 envp
->flags
= ACTIVE_FLAG
;
894 sprintf(buf
, "%zX", (size_t)(len
+ offsetof(env_t
, data
)));
895 setenv("filesize", buf
);
900 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd
);
905 #ifdef CONFIG_CMD_IMPORTENV
907 * env import [-d] [-t | -b | -c] addr [size]
908 * -d: delete existing environment before importing;
909 * otherwise overwrite / append to existion definitions
910 * -t: assume text format; either "size" must be given or the
911 * text data must be '\0' terminated
912 * -b: assume binary format ('\0' separated, "\0\0" terminated)
913 * -c: assume checksum protected environment format
914 * addr: memory address to read from
915 * size: length of input data; if missing, proper '\0'
916 * termination is mandatory
918 static int do_env_import(cmd_tbl_t
*cmdtp
, int flag
,
919 int argc
, char * const argv
[])
930 while (--argc
> 0 && **++argv
== '-') {
934 case 'b': /* raw binary format */
939 case 'c': /* external checksum format */
945 case 't': /* text format */
954 return CMD_RET_USAGE
;
960 return CMD_RET_USAGE
;
963 printf("## Warning: defaulting to text format\n");
965 addr
= (char *)simple_strtoul(argv
[0], NULL
, 16);
968 size
= simple_strtoul(argv
[1], NULL
, 16);
974 while (size
< MAX_ENV_SIZE
) {
975 if ((*s
== sep
) && (*(s
+1) == '\0'))
980 if (size
== MAX_ENV_SIZE
) {
981 printf("## Warning: Input data exceeds %d bytes"
982 " - truncated\n", MAX_ENV_SIZE
);
985 printf("## Info: input data size = %zu = 0x%zX\n", size
, size
);
990 env_t
*ep
= (env_t
*)addr
;
992 size
-= offsetof(env_t
, data
);
993 memcpy(&crc
, &ep
->crc
, sizeof(crc
));
995 if (crc32(0, ep
->data
, size
) != crc
) {
996 puts("## Error: bad CRC, import failed\n");
999 addr
= (char *)ep
->data
;
1002 if (himport_r(&env_htab
, addr
, size
, sep
, del
? 0 : H_NOCLEAR
,
1004 error("Environment import failed: errno = %d\n", errno
);
1007 gd
->flags
|= GD_FLG_ENV_READY
;
1012 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
1019 * New command line interface: "env" command with subcommands
1021 static cmd_tbl_t cmd_env_sub
[] = {
1022 #if defined(CONFIG_CMD_ASKENV)
1023 U_BOOT_CMD_MKENT(ask
, CONFIG_SYS_MAXARGS
, 1, do_env_ask
, "", ""),
1025 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default
, "", ""),
1026 U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS
, 0, do_env_delete
, "", ""),
1027 #if defined(CONFIG_CMD_EDITENV)
1028 U_BOOT_CMD_MKENT(edit
, 2, 0, do_env_edit
, "", ""),
1030 #if defined(CONFIG_CMD_ENV_CALLBACK)
1031 U_BOOT_CMD_MKENT(callbacks
, 1, 0, do_env_callback
, "", ""),
1033 #if defined(CONFIG_CMD_ENV_FLAGS)
1034 U_BOOT_CMD_MKENT(flags
, 1, 0, do_env_flags
, "", ""),
1036 #if defined(CONFIG_CMD_EXPORTENV)
1037 U_BOOT_CMD_MKENT(export
, 4, 0, do_env_export
, "", ""),
1039 #if defined(CONFIG_CMD_GREPENV)
1040 U_BOOT_CMD_MKENT(grep
, CONFIG_SYS_MAXARGS
, 1, do_env_grep
, "", ""),
1042 #if defined(CONFIG_CMD_IMPORTENV)
1043 U_BOOT_CMD_MKENT(import
, 5, 0, do_env_import
, "", ""),
1045 U_BOOT_CMD_MKENT(print
, CONFIG_SYS_MAXARGS
, 1, do_env_print
, "", ""),
1046 #if defined(CONFIG_CMD_RUN)
1047 U_BOOT_CMD_MKENT(run
, CONFIG_SYS_MAXARGS
, 1, do_run
, "", ""),
1049 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1050 U_BOOT_CMD_MKENT(save
, 1, 0, do_env_save
, "", ""),
1052 U_BOOT_CMD_MKENT(set
, CONFIG_SYS_MAXARGS
, 0, do_env_set
, "", ""),
1055 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
1056 void env_reloc(void)
1058 fixup_cmdtable(cmd_env_sub
, ARRAY_SIZE(cmd_env_sub
));
1062 static int do_env(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
1067 return CMD_RET_USAGE
;
1069 /* drop initial "env" arg */
1073 cp
= find_cmd_tbl(argv
[0], cmd_env_sub
, ARRAY_SIZE(cmd_env_sub
));
1076 return cp
->cmd(cmdtp
, flag
, argc
, argv
);
1078 return CMD_RET_USAGE
;
1081 #ifdef CONFIG_SYS_LONGHELP
1082 static char env_help_text
[] =
1083 #if defined(CONFIG_CMD_ASKENV)
1084 "ask name [message] [size] - ask for environment variable\nenv "
1086 #if defined(CONFIG_CMD_ENV_CALLBACK)
1087 "callbacks - print callbacks and their associated variables\nenv "
1089 "default [-f] -a - [forcibly] reset default environment\n"
1090 "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
1091 "env delete [-f] var [...] - [forcibly] delete variable(s)\n"
1092 #if defined(CONFIG_CMD_EDITENV)
1093 "env edit name - edit environment variable\n"
1095 #if defined(CONFIG_CMD_EXPORTENV)
1096 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
1098 #if defined(CONFIG_CMD_ENV_FLAGS)
1099 "env flags - print variables that have non-default flags\n"
1101 #if defined(CONFIG_CMD_GREPENV)
1102 "env grep string [...] - search environment\n"
1104 #if defined(CONFIG_CMD_IMPORTENV)
1105 "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
1107 "env print [-a | name ...] - print environment\n"
1108 #if defined(CONFIG_CMD_RUN)
1109 "env run var [...] - run commands in an environment variable\n"
1111 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1112 "env save - save environment\n"
1114 "env set [-f] name [arg ...]\n";
1118 env
, CONFIG_SYS_MAXARGS
, 1, do_env
,
1119 "environment handling commands", env_help_text
1123 * Old command line interface, kept for compatibility
1126 #if defined(CONFIG_CMD_EDITENV)
1127 U_BOOT_CMD_COMPLETE(
1128 editenv
, 2, 0, do_env_edit
,
1129 "edit environment variable",
1131 " - edit environment variable 'name'",
1136 U_BOOT_CMD_COMPLETE(
1137 printenv
, CONFIG_SYS_MAXARGS
, 1, do_env_print
,
1138 "print environment variables",
1139 "[-a]\n - print [all] values of all environment variables\n"
1140 "printenv name ...\n"
1141 " - print value of environment variable 'name'",
1145 #ifdef CONFIG_CMD_GREPENV
1146 U_BOOT_CMD_COMPLETE(
1147 grepenv
, CONFIG_SYS_MAXARGS
, 0, do_env_grep
,
1148 "search environment variables",
1150 " - list environment name=value pairs matching 'string'",
1155 U_BOOT_CMD_COMPLETE(
1156 setenv
, CONFIG_SYS_MAXARGS
, 0, do_env_set
,
1157 "set environment variables",
1158 "[-f] name value ...\n"
1159 " - [forcibly] set environment variable 'name' to 'value ...'\n"
1160 "setenv [-f] name\n"
1161 " - [forcibly] delete environment variable 'name'",
1165 #if defined(CONFIG_CMD_ASKENV)
1168 askenv
, CONFIG_SYS_MAXARGS
, 1, do_env_ask
,
1169 "get environment variables from stdin",
1170 "name [message] [size]\n"
1171 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1173 " - get environment variable 'name' from stdin\n"
1174 "askenv name size\n"
1175 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1176 "askenv name [message] size\n"
1177 " - display 'message' string and get environment variable 'name'"
1178 "from stdin (max 'size' chars)"
1182 #if defined(CONFIG_CMD_RUN)
1183 U_BOOT_CMD_COMPLETE(
1184 run
, CONFIG_SYS_MAXARGS
, 1, do_run
,
1185 "run commands in an environment variable",
1187 " - run the commands in the environment variable(s) 'var'",
1191 #endif /* CONFIG_SPL_BUILD */