2 * (C) Copyright 2000-2013
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_IN_UBI) && \
66 !defined(CONFIG_ENV_IS_NOWHERE)
67 # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\
68 SPI_FLASH|NVRAM|MMC|FAT|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE
72 * Maximum expected input data size for import command
74 #define MAX_ENV_SIZE (1 << 20) /* 1 MiB */
77 * This variable is incremented on each do_env_set(), so it can
78 * be used via get_env_id() as an indication, if the environment
79 * has changed or not. So it is possible to reread an environment
80 * variable only if the environment was changed ... done so for
81 * example in NetInitLoop()
83 static int env_id
= 1;
90 #ifndef CONFIG_SPL_BUILD
92 * Command interface: print one or all environment variables
94 * Returns 0 in case of error, or length of printed string
96 static int env_print(char *name
, int flag
)
101 if (name
) { /* print a single name */
106 hsearch_r(e
, FIND
, &ep
, &env_htab
, flag
);
109 len
= printf("%s=%s\n", ep
->key
, ep
->data
);
113 /* print whole list */
114 len
= hexport_r(&env_htab
, '\n', flag
, &res
, 0, 0, NULL
);
122 /* should never happen */
123 printf("## Error: cannot export environment\n");
127 static int do_env_print(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
132 int env_flag
= H_HIDE_DOT
;
134 if (argc
> 1 && argv
[1][0] == '-' && argv
[1][1] == 'a') {
137 env_flag
&= ~H_HIDE_DOT
;
141 /* print all env vars */
142 rcode
= env_print(NULL
, env_flag
);
145 printf("\nEnvironment size: %d/%ld bytes\n",
146 rcode
, (ulong
)ENV_SIZE
);
150 /* print selected env vars */
151 env_flag
&= ~H_HIDE_DOT
;
152 for (i
= 1; i
< argc
; ++i
) {
153 int rc
= env_print(argv
[i
], env_flag
);
155 printf("## Error: \"%s\" not defined\n", argv
[i
]);
163 #ifdef CONFIG_CMD_GREPENV
164 static int do_env_grep(cmd_tbl_t
*cmdtp
, int flag
,
165 int argc
, char * const argv
[])
168 int len
, grep_how
, grep_what
;
171 return CMD_RET_USAGE
;
173 grep_how
= H_MATCH_SUBSTR
; /* default: substring search */
174 grep_what
= H_MATCH_BOTH
; /* default: grep names and values */
176 while (argc
> 1 && **(argv
+ 1) == '-') {
183 case 'e': /* use regex matching */
184 grep_how
= H_MATCH_REGEX
;
187 case 'n': /* grep for name */
188 grep_what
= H_MATCH_KEY
;
190 case 'v': /* grep for value */
191 grep_what
= H_MATCH_DATA
;
193 case 'b': /* grep for both */
194 grep_what
= H_MATCH_BOTH
;
199 return CMD_RET_USAGE
;
205 len
= hexport_r(&env_htab
, '\n',
206 flag
| grep_what
| grep_how
,
207 &res
, 0, argc
, argv
);
220 #endif /* CONFIG_SPL_BUILD */
223 * Set a new environment variable,
224 * or replace or delete an existing one.
226 static int _do_env_set(int flag
, int argc
, char * const argv
[])
229 char *name
, *value
, *s
;
231 int env_flag
= H_INTERACTIVE
;
233 debug("Initial value for argc=%d\n", argc
);
234 while (argc
> 1 && **(argv
+ 1) == '-') {
240 case 'f': /* force */
244 return CMD_RET_USAGE
;
248 debug("Final value for argc=%d\n", argc
);
252 if (strchr(name
, '=')) {
253 printf("## Error: illegal character '='"
254 "in variable name \"%s\"\n", name
);
261 if (argc
< 3 || argv
[2] == NULL
) {
262 int rc
= hdelete_r(name
, &env_htab
, env_flag
);
267 * Insert / replace new value
269 for (i
= 2, len
= 0; i
< argc
; ++i
)
270 len
+= strlen(argv
[i
]) + 1;
274 printf("## Can't malloc %d bytes\n", len
);
277 for (i
= 2, s
= value
; i
< argc
; ++i
) {
280 while ((*s
++ = *v
++) != '\0')
289 hsearch_r(e
, ENTER
, &ep
, &env_htab
, env_flag
);
292 printf("## Error inserting \"%s\" variable, errno=%d\n",
300 int setenv(const char *varname
, const char *varvalue
)
302 const char * const argv
[4] = { "setenv", varname
, varvalue
, NULL
};
304 /* before import into hashtable */
305 if (!(gd
->flags
& GD_FLG_ENV_READY
))
308 if (varvalue
== NULL
|| varvalue
[0] == '\0')
309 return _do_env_set(0, 2, (char * const *)argv
);
311 return _do_env_set(0, 3, (char * const *)argv
);
315 * Set an environment variable to an integer value
317 * @param varname Environment variable to set
318 * @param value Value to set it to
319 * @return 0 if ok, 1 on error
321 int setenv_ulong(const char *varname
, ulong value
)
323 /* TODO: this should be unsigned */
324 char *str
= simple_itoa(value
);
326 return setenv(varname
, str
);
330 * Set an environment variable to an value in hex
332 * @param varname Environment variable to set
333 * @param value Value to set it to
334 * @return 0 if ok, 1 on error
336 int setenv_hex(const char *varname
, ulong value
)
340 sprintf(str
, "%lx", value
);
341 return setenv(varname
, str
);
344 ulong
getenv_hex(const char *varname
, ulong default_val
)
352 value
= simple_strtoul(s
, &endp
, 16);
359 #ifndef CONFIG_SPL_BUILD
360 static int do_env_set(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
363 return CMD_RET_USAGE
;
365 return _do_env_set(flag
, argc
, argv
);
369 * Prompt for environment variable
371 #if defined(CONFIG_CMD_ASKENV)
372 int do_env_ask(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
374 char message
[CONFIG_SYS_CBSIZE
];
375 int i
, len
, pos
, size
;
379 local_args
[0] = argv
[0];
380 local_args
[1] = argv
[1];
381 local_args
[2] = NULL
;
382 local_args
[3] = NULL
;
387 * env_ask envname [message1 ...] [size]
390 return CMD_RET_USAGE
;
393 * We test the last argument if it can be converted
394 * into a decimal number. If yes, we assume it's
395 * the size. Otherwise we echo it as part of the
398 i
= simple_strtoul(argv
[argc
- 1], &endptr
, 10);
399 if (*endptr
!= '\0') { /* no size */
400 size
= CONFIG_SYS_CBSIZE
- 1;
401 } else { /* size given */
407 sprintf(message
, "Please enter '%s': ", argv
[1]);
409 /* env_ask envname message1 ... messagen [size] */
410 for (i
= 2, pos
= 0; i
< argc
; i
++) {
412 message
[pos
++] = ' ';
414 strcpy(message
+ pos
, argv
[i
]);
415 pos
+= strlen(argv
[i
]);
417 message
[pos
++] = ' ';
421 if (size
>= CONFIG_SYS_CBSIZE
)
422 size
= CONFIG_SYS_CBSIZE
- 1;
427 /* prompt for input */
428 len
= readline(message
);
431 console_buffer
[size
] = '\0';
434 if (console_buffer
[0] != '\0') {
435 local_args
[2] = console_buffer
;
439 /* Continue calling setenv code */
440 return _do_env_set(flag
, len
, local_args
);
444 #if defined(CONFIG_CMD_ENV_CALLBACK)
445 static int print_static_binding(const char *var_name
, const char *callback_name
)
447 printf("\t%-20s %-20s\n", var_name
, callback_name
);
452 static int print_active_callback(ENTRY
*entry
)
454 struct env_clbk_tbl
*clbkp
;
458 if (entry
->callback
== NULL
)
461 /* look up the callback in the linker-list */
462 num_callbacks
= ll_entry_count(struct env_clbk_tbl
, env_clbk
);
463 for (i
= 0, clbkp
= ll_entry_start(struct env_clbk_tbl
, env_clbk
);
466 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
467 if (entry
->callback
== clbkp
->callback
+ gd
->reloc_off
)
469 if (entry
->callback
== clbkp
->callback
)
474 if (i
== num_callbacks
)
475 /* this should probably never happen, but just in case... */
476 printf("\t%-20s %p\n", entry
->key
, entry
->callback
);
478 printf("\t%-20s %-20s\n", entry
->key
, clbkp
->name
);
484 * Print the callbacks available and what they are bound to
486 int do_env_callback(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
488 struct env_clbk_tbl
*clbkp
;
492 /* Print the available callbacks */
493 puts("Available callbacks:\n");
494 puts("\tCallback Name\n");
495 puts("\t-------------\n");
496 num_callbacks
= ll_entry_count(struct env_clbk_tbl
, env_clbk
);
497 for (i
= 0, clbkp
= ll_entry_start(struct env_clbk_tbl
, env_clbk
);
500 printf("\t%s\n", clbkp
->name
);
503 /* Print the static bindings that may exist */
504 puts("Static callback bindings:\n");
505 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
506 printf("\t%-20s %-20s\n", "-------------", "-------------");
507 env_attr_walk(ENV_CALLBACK_LIST_STATIC
, print_static_binding
);
510 /* walk through each variable and print the callback if it has one */
511 puts("Active callback bindings:\n");
512 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
513 printf("\t%-20s %-20s\n", "-------------", "-------------");
514 hwalk_r(&env_htab
, print_active_callback
);
519 #if defined(CONFIG_CMD_ENV_FLAGS)
520 static int print_static_flags(const char *var_name
, const char *flags
)
522 enum env_flags_vartype type
= env_flags_parse_vartype(flags
);
523 enum env_flags_varaccess access
= env_flags_parse_varaccess(flags
);
525 printf("\t%-20s %-20s %-20s\n", var_name
,
526 env_flags_get_vartype_name(type
),
527 env_flags_get_varaccess_name(access
));
532 static int print_active_flags(ENTRY
*entry
)
534 enum env_flags_vartype type
;
535 enum env_flags_varaccess access
;
537 if (entry
->flags
== 0)
540 type
= (enum env_flags_vartype
)
541 (entry
->flags
& ENV_FLAGS_VARTYPE_BIN_MASK
);
542 access
= env_flags_parse_varaccess_from_binflags(entry
->flags
);
543 printf("\t%-20s %-20s %-20s\n", entry
->key
,
544 env_flags_get_vartype_name(type
),
545 env_flags_get_varaccess_name(access
));
551 * Print the flags available and what variables have flags
553 int do_env_flags(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
555 /* Print the available variable types */
556 printf("Available variable type flags (position %d):\n",
557 ENV_FLAGS_VARTYPE_LOC
);
558 puts("\tFlag\tVariable Type Name\n");
559 puts("\t----\t------------------\n");
560 env_flags_print_vartypes();
563 /* Print the available variable access types */
564 printf("Available variable access flags (position %d):\n",
565 ENV_FLAGS_VARACCESS_LOC
);
566 puts("\tFlag\tVariable Access Name\n");
567 puts("\t----\t--------------------\n");
568 env_flags_print_varaccess();
571 /* Print the static flags that may exist */
572 puts("Static flags:\n");
573 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
575 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
577 env_attr_walk(ENV_FLAGS_LIST_STATIC
, print_static_flags
);
580 /* walk through each variable and print the flags if non-default */
581 puts("Active flags:\n");
582 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
584 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
586 hwalk_r(&env_htab
, print_active_flags
);
592 * Interactively edit an environment variable
594 #if defined(CONFIG_CMD_EDITENV)
595 static int do_env_edit(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
598 char buffer
[CONFIG_SYS_CBSIZE
];
602 return CMD_RET_USAGE
;
604 /* Set read buffer to initial value or empty sting */
605 init_val
= getenv(argv
[1]);
607 sprintf(buffer
, "%s", init_val
);
611 if (readline_into_buffer("edit: ", buffer
, 0) < 0)
614 return setenv(argv
[1], buffer
);
616 #endif /* CONFIG_CMD_EDITENV */
617 #endif /* CONFIG_SPL_BUILD */
620 * Look up variable from environment,
621 * return address of storage for that variable,
622 * or NULL if not found
624 char *getenv(const char *name
)
626 if (gd
->flags
& GD_FLG_ENV_READY
) { /* after import into hashtable */
633 hsearch_r(e
, FIND
, &ep
, &env_htab
, 0);
635 return ep
? ep
->data
: NULL
;
638 /* restricted capabilities before import */
639 if (getenv_f(name
, (char *)(gd
->env_buf
), sizeof(gd
->env_buf
)) > 0)
640 return (char *)(gd
->env_buf
);
646 * Look up variable from environment for restricted C runtime env.
648 int getenv_f(const char *name
, char *buf
, unsigned len
)
652 for (i
= 0; env_get_char(i
) != '\0'; i
= nxt
+ 1) {
655 for (nxt
= i
; env_get_char(nxt
) != '\0'; ++nxt
) {
656 if (nxt
>= CONFIG_ENV_SIZE
)
660 val
= envmatch((uchar
*)name
, i
);
664 /* found; copy out */
665 for (n
= 0; n
< len
; ++n
, ++buf
) {
666 *buf
= env_get_char(val
++);
674 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
684 * Decode the integer value of an environment variable and return it.
686 * @param name Name of environemnt variable
687 * @param base Number base to use (normally 10, or 16 for hex)
688 * @param default_val Default value to return if the variable is not
690 * @return the decoded value, or default_val if not found
692 ulong
getenv_ulong(const char *name
, int base
, ulong default_val
)
695 * We can use getenv() here, even before relocation, since the
696 * environment variable value is an integer and thus short.
698 const char *str
= getenv(name
);
700 return str
? simple_strtoul(str
, NULL
, base
) : default_val
;
703 #ifndef CONFIG_SPL_BUILD
704 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
705 static int do_env_save(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
708 printf("Saving Environment to %s...\n", env_name_spec
);
710 return saveenv() ? 1 : 0;
714 saveenv
, 1, 0, do_env_save
,
715 "save environment variables to persistent storage",
719 #endif /* CONFIG_SPL_BUILD */
723 * Match a name / name=value pair
725 * s1 is either a simple 'name', or a 'name=value' pair.
726 * i2 is the environment index for a 'name2=value2' pair.
727 * If the names match, return the index for the value2, else -1.
729 int envmatch(uchar
*s1
, int i2
)
734 while (*s1
== env_get_char(i2
++))
738 if (*s1
== '\0' && env_get_char(i2
-1) == '=')
744 #ifndef CONFIG_SPL_BUILD
745 static int do_env_default(cmd_tbl_t
*cmdtp
, int __flag
,
746 int argc
, char * const argv
[])
748 int all
= 0, flag
= 0;
750 debug("Initial value for argc=%d\n", argc
);
751 while (--argc
> 0 && **++argv
== '-') {
756 case 'a': /* default all */
759 case 'f': /* force */
763 return cmd_usage(cmdtp
);
767 debug("Final value for argc=%d\n", argc
);
768 if (all
&& (argc
== 0)) {
769 /* Reset the whole environment */
770 set_default_env("## Resetting to default environment\n");
773 if (!all
&& (argc
> 0)) {
774 /* Reset individual variables */
775 set_default_vars(argc
, argv
);
779 return cmd_usage(cmdtp
);
782 static int do_env_delete(cmd_tbl_t
*cmdtp
, int flag
,
783 int argc
, char * const argv
[])
785 int env_flag
= H_INTERACTIVE
;
788 debug("Initial value for argc=%d\n", argc
);
789 while (argc
> 1 && **(argv
+ 1) == '-') {
795 case 'f': /* force */
799 return CMD_RET_USAGE
;
803 debug("Final value for argc=%d\n", argc
);
808 char *name
= *++argv
;
810 if (!hdelete_r(name
, &env_htab
, env_flag
))
817 #ifdef CONFIG_CMD_EXPORTENV
819 * env export [-t | -b | -c] [-s size] addr [var ...]
820 * -t: export as text format; if size is given, data will be
821 * padded with '\0' bytes; if not, one terminating '\0'
822 * will be added (which is included in the "filesize"
823 * setting so you can for exmple copy this to flash and
824 * keep the termination).
825 * -b: export as binary format (name=value pairs separated by
826 * '\0', list end marked by double "\0\0")
827 * -c: export as checksum protected environment format as
828 * used for example by "saveenv" command
830 * size of output buffer
831 * addr: memory address where environment gets stored
832 * var... List of variable names that get included into the
833 * export. Without arguments, the whole environment gets
836 * With "-c" and size is NOT given, then the export command will
837 * format the data as currently used for the persistent storage,
838 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
839 * prepend a valid CRC32 checksum and, in case of resundant
840 * environment, a "current" redundancy flag. If size is given, this
841 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
842 * checksum and redundancy flag will be inserted.
844 * With "-b" and "-t", always only the real data (including a
845 * terminating '\0' byte) will be written; here the optional size
846 * argument will be used to make sure not to overflow the user
847 * provided buffer; the command will abort if the size is not
848 * sufficient. Any remainign space will be '\0' padded.
850 * On successful return, the variable "filesize" will be set.
851 * Note that filesize includes the trailing/terminating '\0' byte(s).
853 * Usage szenario: create a text snapshot/backup of the current settings:
855 * => env export -t 100000
856 * => era ${backup_addr} +${filesize}
857 * => cp.b 100000 ${backup_addr} ${filesize}
859 * Re-import this snapshot, deleting all other settings:
861 * => env import -d -t ${backup_addr}
863 static int do_env_export(cmd_tbl_t
*cmdtp
, int flag
,
864 int argc
, char * const argv
[])
867 char *addr
, *cmd
, *res
;
877 while (--argc
> 0 && **++argv
== '-') {
881 case 'b': /* raw binary format */
886 case 'c': /* external checksum format */
892 case 's': /* size given */
894 return cmd_usage(cmdtp
);
895 size
= simple_strtoul(*++argv
, NULL
, 16);
897 case 't': /* text format */
903 return CMD_RET_USAGE
;
910 return CMD_RET_USAGE
;
912 addr
= (char *)simple_strtoul(argv
[0], NULL
, 16);
915 memset(addr
, '\0', size
);
920 if (sep
) { /* export as text file */
921 len
= hexport_r(&env_htab
, sep
,
922 H_MATCH_KEY
| H_MATCH_IDENT
,
923 &addr
, size
, argc
, argv
);
925 error("Cannot export environment: errno = %d\n", errno
);
928 sprintf(buf
, "%zX", (size_t)len
);
929 setenv("filesize", buf
);
934 envp
= (env_t
*)addr
;
936 if (chk
) /* export as checksum protected block */
937 res
= (char *)envp
->data
;
938 else /* export as raw binary data */
941 len
= hexport_r(&env_htab
, '\0',
942 H_MATCH_KEY
| H_MATCH_IDENT
,
943 &res
, ENV_SIZE
, argc
, argv
);
945 error("Cannot export environment: errno = %d\n", errno
);
950 envp
->crc
= crc32(0, envp
->data
, ENV_SIZE
);
951 #ifdef CONFIG_ENV_ADDR_REDUND
952 envp
->flags
= ACTIVE_FLAG
;
955 setenv_hex("filesize", len
+ offsetof(env_t
, data
));
960 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd
);
965 #ifdef CONFIG_CMD_IMPORTENV
967 * env import [-d] [-t | -b | -c] addr [size]
968 * -d: delete existing environment before importing;
969 * otherwise overwrite / append to existion definitions
970 * -t: assume text format; either "size" must be given or the
971 * text data must be '\0' terminated
972 * -b: assume binary format ('\0' separated, "\0\0" terminated)
973 * -c: assume checksum protected environment format
974 * addr: memory address to read from
975 * size: length of input data; if missing, proper '\0'
976 * termination is mandatory
978 static int do_env_import(cmd_tbl_t
*cmdtp
, int flag
,
979 int argc
, char * const argv
[])
990 while (--argc
> 0 && **++argv
== '-') {
994 case 'b': /* raw binary format */
999 case 'c': /* external checksum format */
1005 case 't': /* text format */
1014 return CMD_RET_USAGE
;
1020 return CMD_RET_USAGE
;
1023 printf("## Warning: defaulting to text format\n");
1025 addr
= (char *)simple_strtoul(argv
[0], NULL
, 16);
1028 size
= simple_strtoul(argv
[1], NULL
, 16);
1034 while (size
< MAX_ENV_SIZE
) {
1035 if ((*s
== sep
) && (*(s
+1) == '\0'))
1040 if (size
== MAX_ENV_SIZE
) {
1041 printf("## Warning: Input data exceeds %d bytes"
1042 " - truncated\n", MAX_ENV_SIZE
);
1045 printf("## Info: input data size = %zu = 0x%zX\n", size
, size
);
1050 env_t
*ep
= (env_t
*)addr
;
1052 size
-= offsetof(env_t
, data
);
1053 memcpy(&crc
, &ep
->crc
, sizeof(crc
));
1055 if (crc32(0, ep
->data
, size
) != crc
) {
1056 puts("## Error: bad CRC, import failed\n");
1059 addr
= (char *)ep
->data
;
1062 if (himport_r(&env_htab
, addr
, size
, sep
, del
? 0 : H_NOCLEAR
,
1064 error("Environment import failed: errno = %d\n", errno
);
1067 gd
->flags
|= GD_FLG_ENV_READY
;
1072 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
1079 * New command line interface: "env" command with subcommands
1081 static cmd_tbl_t cmd_env_sub
[] = {
1082 #if defined(CONFIG_CMD_ASKENV)
1083 U_BOOT_CMD_MKENT(ask
, CONFIG_SYS_MAXARGS
, 1, do_env_ask
, "", ""),
1085 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default
, "", ""),
1086 U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS
, 0, do_env_delete
, "", ""),
1087 #if defined(CONFIG_CMD_EDITENV)
1088 U_BOOT_CMD_MKENT(edit
, 2, 0, do_env_edit
, "", ""),
1090 #if defined(CONFIG_CMD_ENV_CALLBACK)
1091 U_BOOT_CMD_MKENT(callbacks
, 1, 0, do_env_callback
, "", ""),
1093 #if defined(CONFIG_CMD_ENV_FLAGS)
1094 U_BOOT_CMD_MKENT(flags
, 1, 0, do_env_flags
, "", ""),
1096 #if defined(CONFIG_CMD_EXPORTENV)
1097 U_BOOT_CMD_MKENT(export
, 4, 0, do_env_export
, "", ""),
1099 #if defined(CONFIG_CMD_GREPENV)
1100 U_BOOT_CMD_MKENT(grep
, CONFIG_SYS_MAXARGS
, 1, do_env_grep
, "", ""),
1102 #if defined(CONFIG_CMD_IMPORTENV)
1103 U_BOOT_CMD_MKENT(import
, 5, 0, do_env_import
, "", ""),
1105 U_BOOT_CMD_MKENT(print
, CONFIG_SYS_MAXARGS
, 1, do_env_print
, "", ""),
1106 #if defined(CONFIG_CMD_RUN)
1107 U_BOOT_CMD_MKENT(run
, CONFIG_SYS_MAXARGS
, 1, do_run
, "", ""),
1109 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1110 U_BOOT_CMD_MKENT(save
, 1, 0, do_env_save
, "", ""),
1112 U_BOOT_CMD_MKENT(set
, CONFIG_SYS_MAXARGS
, 0, do_env_set
, "", ""),
1115 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
1116 void env_reloc(void)
1118 fixup_cmdtable(cmd_env_sub
, ARRAY_SIZE(cmd_env_sub
));
1122 static int do_env(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
1127 return CMD_RET_USAGE
;
1129 /* drop initial "env" arg */
1133 cp
= find_cmd_tbl(argv
[0], cmd_env_sub
, ARRAY_SIZE(cmd_env_sub
));
1136 return cp
->cmd(cmdtp
, flag
, argc
, argv
);
1138 return CMD_RET_USAGE
;
1141 #ifdef CONFIG_SYS_LONGHELP
1142 static char env_help_text
[] =
1143 #if defined(CONFIG_CMD_ASKENV)
1144 "ask name [message] [size] - ask for environment variable\nenv "
1146 #if defined(CONFIG_CMD_ENV_CALLBACK)
1147 "callbacks - print callbacks and their associated variables\nenv "
1149 "default [-f] -a - [forcibly] reset default environment\n"
1150 "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
1151 "env delete [-f] var [...] - [forcibly] delete variable(s)\n"
1152 #if defined(CONFIG_CMD_EDITENV)
1153 "env edit name - edit environment variable\n"
1155 #if defined(CONFIG_CMD_EXPORTENV)
1156 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
1158 #if defined(CONFIG_CMD_ENV_FLAGS)
1159 "env flags - print variables that have non-default flags\n"
1161 #if defined(CONFIG_CMD_GREPENV)
1163 "env grep [-e] [-n | -v | -b] string [...] - search environment\n"
1165 "env grep [-n | -v | -b] string [...] - search environment\n"
1168 #if defined(CONFIG_CMD_IMPORTENV)
1169 "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
1171 "env print [-a | name ...] - print environment\n"
1172 #if defined(CONFIG_CMD_RUN)
1173 "env run var [...] - run commands in an environment variable\n"
1175 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1176 "env save - save environment\n"
1178 "env set [-f] name [arg ...]\n";
1182 env
, CONFIG_SYS_MAXARGS
, 1, do_env
,
1183 "environment handling commands", env_help_text
1187 * Old command line interface, kept for compatibility
1190 #if defined(CONFIG_CMD_EDITENV)
1191 U_BOOT_CMD_COMPLETE(
1192 editenv
, 2, 0, do_env_edit
,
1193 "edit environment variable",
1195 " - edit environment variable 'name'",
1200 U_BOOT_CMD_COMPLETE(
1201 printenv
, CONFIG_SYS_MAXARGS
, 1, do_env_print
,
1202 "print environment variables",
1203 "[-a]\n - print [all] values of all environment variables\n"
1204 "printenv name ...\n"
1205 " - print value of environment variable 'name'",
1209 #ifdef CONFIG_CMD_GREPENV
1210 U_BOOT_CMD_COMPLETE(
1211 grepenv
, CONFIG_SYS_MAXARGS
, 0, do_env_grep
,
1212 "search environment variables",
1214 "[-e] [-n | -v | -b] string ...\n"
1216 "[-n | -v | -b] string ...\n"
1218 " - list environment name=value pairs matching 'string'\n"
1220 " \"-e\": enable regular expressions;\n"
1222 " \"-n\": search variable names; \"-v\": search values;\n"
1223 " \"-b\": search both names and values (default)",
1228 U_BOOT_CMD_COMPLETE(
1229 setenv
, CONFIG_SYS_MAXARGS
, 0, do_env_set
,
1230 "set environment variables",
1231 "[-f] name value ...\n"
1232 " - [forcibly] set environment variable 'name' to 'value ...'\n"
1233 "setenv [-f] name\n"
1234 " - [forcibly] delete environment variable 'name'",
1238 #if defined(CONFIG_CMD_ASKENV)
1241 askenv
, CONFIG_SYS_MAXARGS
, 1, do_env_ask
,
1242 "get environment variables from stdin",
1243 "name [message] [size]\n"
1244 " - get environment variable 'name' from stdin (max 'size' chars)"
1248 #if defined(CONFIG_CMD_RUN)
1249 U_BOOT_CMD_COMPLETE(
1250 run
, CONFIG_SYS_MAXARGS
, 1, do_run
,
1251 "run commands in an environment variable",
1253 " - run the commands in the environment variable(s) 'var'",
1257 #endif /* CONFIG_SPL_BUILD */