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_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 unsigned char matched[env_htab.size / 8];
169 int rcode = 1, arg = 1, idx;
172 return CMD_RET_USAGE;
174 memset(matched, 0, env_htab.size / 8);
176 while (arg <= argc) {
178 while ((idx = hstrstr_r(argv[arg], idx, &match, &env_htab))) {
179 if (!(matched[idx / 8] & (1 << (idx & 7)))) {
185 matched[idx / 8] |= 1 << (idx & 7);
194 #endif /* CONFIG_SPL_BUILD */
197 * Set a new environment variable,
198 * or replace or delete an existing one.
200 static int _do_env_set(int flag, int argc, char * const argv[])
203 char *name, *value, *s;
205 int env_flag = H_INTERACTIVE;
207 debug("Initial value for argc=%d\n", argc);
208 while (argc > 1 && **(argv + 1) == '-') {
214 case 'f': /* force */
218 return CMD_RET_USAGE;
222 debug("Final value for argc=%d\n", argc);
226 if (strchr(name, '=')) {
227 printf("## Error: illegal character '='"
228 "in variable name \"%s\"\n", name);
235 if (argc < 3 || argv[2] == NULL) {
236 int rc = hdelete_r(name, &env_htab, env_flag);
241 * Insert / replace new value
243 for (i = 2, len = 0; i < argc; ++i)
244 len += strlen(argv[i]) + 1;
248 printf("## Can't malloc %d bytes\n", len);
251 for (i = 2, s = value; i < argc; ++i) {
254 while ((*s++ = *v++) != '\0')
263 hsearch_r(e, ENTER, &ep, &env_htab, env_flag);
266 printf("## Error inserting \"%s\" variable, errno=%d\n",
274 int setenv(const char *varname, const char *varvalue)
276 const char * const argv[4] = { "setenv", varname, varvalue, NULL };
278 /* before import into hashtable */
279 if (!(gd->flags & GD_FLG_ENV_READY))
282 if (varvalue == NULL || varvalue[0] == '\0')
283 return _do_env_set(0, 2, (char * const *)argv);
285 return _do_env_set(0, 3, (char * const *)argv);
289 * Set an environment variable to an integer value
291 * @param varname Environmet variable to set
292 * @param value Value to set it to
293 * @return 0 if ok, 1 on error
295 int setenv_ulong(const char *varname, ulong value)
297 /* TODO: this should be unsigned */
298 char *str = simple_itoa(value);
300 return setenv(varname, str);
304 * Set an environment variable to an value in hex
306 * @param varname Environmet variable to set
307 * @param value Value to set it to
308 * @return 0 if ok, 1 on error
310 int setenv_hex(const char *varname, ulong value)
314 sprintf(str, "%lx", value);
315 return setenv(varname, str);
318 ulong getenv_hex(const char *varname, ulong default_val)
326 value = simple_strtoul(s, &endp, 16);
333 #ifndef CONFIG_SPL_BUILD
334 static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
337 return CMD_RET_USAGE;
339 return _do_env_set(flag, argc, argv);
343 * Prompt for environment variable
345 #if defined(CONFIG_CMD_ASKENV)
346 int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
348 char message[CONFIG_SYS_CBSIZE];
349 int i, len, pos, size;
353 local_args[0] = argv[0];
354 local_args[1] = argv[1];
355 local_args[2] = NULL;
356 local_args[3] = NULL;
361 * env_ask envname [message1 ...] [size]
364 return CMD_RET_USAGE;
367 * We test the last argument if it can be converted
368 * into a decimal number. If yes, we assume it's
369 * the size. Otherwise we echo it as part of the
372 i = simple_strtoul(argv[argc - 1], &endptr, 10);
373 if (*endptr != '\0') { /* no size */
374 size = CONFIG_SYS_CBSIZE - 1;
375 } else { /* size given */
381 sprintf(message, "Please enter '%s': ", argv[1]);
383 /* env_ask envname message1 ... messagen [size] */
384 for (i = 2, pos = 0; i < argc; i++) {
386 message[pos++] = ' ';
388 strcpy(message + pos, argv[i]);
389 pos += strlen(argv[i]);
391 message[pos++] = ' ';
395 if (size >= CONFIG_SYS_CBSIZE)
396 size = CONFIG_SYS_CBSIZE - 1;
401 /* prompt for input */
402 len = readline(message);
405 console_buffer[size] = '\0';
408 if (console_buffer[0] != '\0') {
409 local_args[2] = console_buffer;
413 /* Continue calling setenv code */
414 return _do_env_set(flag, len, local_args);
418 #if defined(CONFIG_CMD_ENV_CALLBACK)
419 static int print_static_binding(const char *var_name, const char *callback_name)
421 printf("\t%-20s %-20s\n", var_name, callback_name);
426 static int print_active_callback(ENTRY *entry)
428 struct env_clbk_tbl *clbkp;
432 if (entry->callback == NULL)
435 /* look up the callback in the linker-list */
436 num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
437 for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
440 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
441 if (entry->callback == clbkp->callback + gd->reloc_off)
443 if (entry->callback == clbkp->callback)
448 if (i == num_callbacks)
449 /* this should probably never happen, but just in case... */
450 printf("\t%-20s %p\n", entry->key, entry->callback);
452 printf("\t%-20s %-20s\n", entry->key, clbkp->name);
458 * Print the callbacks available and what they are bound to
460 int do_env_callback(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
462 struct env_clbk_tbl *clbkp;
466 /* Print the available callbacks */
467 puts("Available callbacks:\n");
468 puts("\tCallback Name\n");
469 puts("\t-------------\n");
470 num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
471 for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
474 printf("\t%s\n", clbkp->name);
477 /* Print the static bindings that may exist */
478 puts("Static callback bindings:\n");
479 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
480 printf("\t%-20s %-20s\n", "-------------", "-------------");
481 env_attr_walk(ENV_CALLBACK_LIST_STATIC, print_static_binding);
484 /* walk through each variable and print the callback if it has one */
485 puts("Active callback bindings:\n");
486 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
487 printf("\t%-20s %-20s\n", "-------------", "-------------");
488 hwalk_r(&env_htab, print_active_callback);
493 #if defined(CONFIG_CMD_ENV_FLAGS)
494 static int print_static_flags(const char *var_name, const char *flags)
496 enum env_flags_vartype type = env_flags_parse_vartype(flags);
497 enum env_flags_varaccess access = env_flags_parse_varaccess(flags);
499 printf("\t%-20s %-20s %-20s\n", var_name,
500 env_flags_get_vartype_name(type),
501 env_flags_get_varaccess_name(access));
506 static int print_active_flags(ENTRY *entry)
508 enum env_flags_vartype type;
509 enum env_flags_varaccess access;
511 if (entry->flags == 0)
514 type = (enum env_flags_vartype)
515 (entry->flags & ENV_FLAGS_VARTYPE_BIN_MASK);
516 access = env_flags_parse_varaccess_from_binflags(entry->flags);
517 printf("\t%-20s %-20s %-20s\n", entry->key,
518 env_flags_get_vartype_name(type),
519 env_flags_get_varaccess_name(access));
525 * Print the flags available and what variables have flags
527 int do_env_flags(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
529 /* Print the available variable types */
530 printf("Available variable type flags (position %d):\n",
531 ENV_FLAGS_VARTYPE_LOC);
532 puts("\tFlag\tVariable Type Name\n");
533 puts("\t----\t------------------\n");
534 env_flags_print_vartypes();
537 /* Print the available variable access types */
538 printf("Available variable access flags (position %d):\n",
539 ENV_FLAGS_VARACCESS_LOC);
540 puts("\tFlag\tVariable Access Name\n");
541 puts("\t----\t--------------------\n");
542 env_flags_print_varaccess();
545 /* Print the static flags that may exist */
546 puts("Static flags:\n");
547 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
549 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
551 env_attr_walk(ENV_FLAGS_LIST_STATIC, print_static_flags);
554 /* walk through each variable and print the flags if non-default */
555 puts("Active flags:\n");
556 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
558 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
560 hwalk_r(&env_htab, print_active_flags);
566 * Interactively edit an environment variable
568 #if defined(CONFIG_CMD_EDITENV)
569 static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc,
572 char buffer[CONFIG_SYS_CBSIZE];
576 return CMD_RET_USAGE;
578 /* Set read buffer to initial value or empty sting */
579 init_val = getenv(argv[1]);
581 sprintf(buffer, "%s", init_val);
585 if (readline_into_buffer("edit: ", buffer, 0) < 0)
588 return setenv(argv[1], buffer);
590 #endif /* CONFIG_CMD_EDITENV */
591 #endif /* CONFIG_SPL_BUILD */
594 * Look up variable from environment,
595 * return address of storage for that variable,
596 * or NULL if not found
598 char *getenv(const char *name)
600 if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */
607 hsearch_r(e, FIND, &ep, &env_htab, 0);
609 return ep ? ep->data : NULL;
612 /* restricted capabilities before import */
613 if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0)
614 return (char *)(gd->env_buf);
620 * Look up variable from environment for restricted C runtime env.
622 int getenv_f(const char *name, char *buf, unsigned len)
626 for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
629 for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) {
630 if (nxt >= CONFIG_ENV_SIZE)
634 val = envmatch((uchar *)name, i);
638 /* found; copy out */
639 for (n = 0; n < len; ++n, ++buf) {
640 *buf = env_get_char(val++);
648 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
658 * Decode the integer value of an environment variable and return it.
660 * @param name Name of environemnt variable
661 * @param base Number base to use (normally 10, or 16 for hex)
662 * @param default_val Default value to return if the variable is not
664 * @return the decoded value, or default_val if not found
666 ulong getenv_ulong(const char *name, int base, ulong default_val)
669 * We can use getenv() here, even before relocation, since the
670 * environment variable value is an integer and thus short.
672 const char *str = getenv(name);
674 return str ? simple_strtoul(str, NULL, base) : default_val;
677 #ifndef CONFIG_SPL_BUILD
678 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
679 static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc,
682 printf("Saving Environment to %s...\n", env_name_spec);
684 return saveenv() ? 1 : 0;
688 saveenv, 1, 0, do_env_save,
689 "save environment variables to persistent storage",
693 #endif /* CONFIG_SPL_BUILD */
697 * Match a name / name=value pair
699 * s1 is either a simple 'name', or a 'name=value' pair.
700 * i2 is the environment index for a 'name2=value2' pair.
701 * If the names match, return the index for the value2, else -1.
703 int envmatch(uchar *s1, int i2)
708 while (*s1 == env_get_char(i2++))
712 if (*s1 == '\0' && env_get_char(i2-1) == '=')
718 #ifndef CONFIG_SPL_BUILD
719 static int do_env_default(cmd_tbl_t *cmdtp, int __flag,
720 int argc, char * const argv[])
722 int all = 0, flag = 0;
724 debug("Initial value for argc=%d\n", argc);
725 while (--argc > 0 && **++argv == '-') {
730 case 'a': /* default all */
733 case 'f': /* force */
737 return cmd_usage(cmdtp);
741 debug("Final value for argc=%d\n", argc);
742 if (all && (argc == 0)) {
743 /* Reset the whole environment */
744 set_default_env("## Resetting to default environment\n");
747 if (!all && (argc > 0)) {
748 /* Reset individual variables */
749 set_default_vars(argc, argv);
753 return cmd_usage(cmdtp);
756 static int do_env_delete(cmd_tbl_t *cmdtp, int flag,
757 int argc, char * const argv[])
759 int env_flag = H_INTERACTIVE;
762 debug("Initial value for argc=%d\n", argc);
763 while (argc > 1 && **(argv + 1) == '-') {
769 case 'f': /* force */
773 return CMD_RET_USAGE;
777 debug("Final value for argc=%d\n", argc);
782 char *name = *++argv;
784 if (!hdelete_r(name, &env_htab, env_flag))
791 #ifdef CONFIG_CMD_EXPORTENV
793 * env export [-t | -b | -c] [-s size] addr [var ...]
794 * -t: export as text format; if size is given, data will be
795 * padded with '\0' bytes; if not, one terminating '\0'
796 * will be added (which is included in the "filesize"
797 * setting so you can for exmple copy this to flash and
798 * keep the termination).
799 * -b: export as binary format (name=value pairs separated by
800 * '\0', list end marked by double "\0\0")
801 * -c: export as checksum protected environment format as
802 * used for example by "saveenv" command
804 * size of output buffer
805 * addr: memory address where environment gets stored
806 * var... List of variable names that get included into the
807 * export. Without arguments, the whole environment gets
810 * With "-c" and size is NOT given, then the export command will
811 * format the data as currently used for the persistent storage,
812 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
813 * prepend a valid CRC32 checksum and, in case of resundant
814 * environment, a "current" redundancy flag. If size is given, this
815 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
816 * checksum and redundancy flag will be inserted.
818 * With "-b" and "-t", always only the real data (including a
819 * terminating '\0' byte) will be written; here the optional size
820 * argument will be used to make sure not to overflow the user
821 * provided buffer; the command will abort if the size is not
822 * sufficient. Any remainign space will be '\0' padded.
824 * On successful return, the variable "filesize" will be set.
825 * Note that filesize includes the trailing/terminating '\0' byte(s).
827 * Usage szenario: create a text snapshot/backup of the current settings:
829 * => env export -t 100000
830 * => era ${backup_addr} +${filesize}
831 * => cp.b 100000 ${backup_addr} ${filesize}
833 * Re-import this snapshot, deleting all other settings:
835 * => env import -d -t ${backup_addr}
837 static int do_env_export(cmd_tbl_t *cmdtp, int flag,
838 int argc, char * const argv[])
841 char *addr, *cmd, *res;
851 while (--argc > 0 && **++argv == '-') {
855 case 'b': /* raw binary format */
860 case 'c': /* external checksum format */
866 case 's': /* size given */
868 return cmd_usage(cmdtp);
869 size = simple_strtoul(*++argv, NULL, 16);
871 case 't': /* text format */
877 return CMD_RET_USAGE;
884 return CMD_RET_USAGE;
886 addr = (char *)simple_strtoul(argv[0], NULL, 16);
889 memset(addr, '\0', size);
894 if (sep) { /* export as text file */
895 len = hexport_r(&env_htab, sep, 0, &addr, size, argc, argv);
897 error("Cannot export environment: errno = %d\n", errno);
900 sprintf(buf, "%zX", (size_t)len);
901 setenv("filesize", buf);
906 envp = (env_t *)addr;
908 if (chk) /* export as checksum protected block */
909 res = (char *)envp->data;
910 else /* export as raw binary data */
913 len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, argc, argv);
915 error("Cannot export environment: errno = %d\n", errno);
920 envp->crc = crc32(0, envp->data, ENV_SIZE);
921 #ifdef CONFIG_ENV_ADDR_REDUND
922 envp->flags = ACTIVE_FLAG;
925 setenv_hex("filesize", len + offsetof(env_t, data));
930 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd);
935 #ifdef CONFIG_CMD_IMPORTENV
937 * env import [-d] [-t | -b | -c] addr [size]
938 * -d: delete existing environment before importing;
939 * otherwise overwrite / append to existion definitions
940 * -t: assume text format; either "size" must be given or the
941 * text data must be '\0' terminated
942 * -b: assume binary format ('\0' separated, "\0\0" terminated)
943 * -c: assume checksum protected environment format
944 * addr: memory address to read from
945 * size: length of input data; if missing, proper '\0'
946 * termination is mandatory
948 static int do_env_import(cmd_tbl_t *cmdtp, int flag,
949 int argc, char * const argv[])
960 while (--argc > 0 && **++argv == '-') {
964 case 'b': /* raw binary format */
969 case 'c': /* external checksum format */
975 case 't': /* text format */
984 return CMD_RET_USAGE;
990 return CMD_RET_USAGE;
993 printf("## Warning: defaulting to text format\n");
995 addr = (char *)simple_strtoul(argv[0], NULL, 16);
998 size = simple_strtoul(argv[1], NULL, 16);
1004 while (size < MAX_ENV_SIZE) {
1005 if ((*s == sep) && (*(s+1) == '\0'))
1010 if (size == MAX_ENV_SIZE) {
1011 printf("## Warning: Input data exceeds %d bytes"
1012 " - truncated\n", MAX_ENV_SIZE);
1015 printf("## Info: input data size = %zu = 0x%zX\n", size, size);
1020 env_t *ep = (env_t *)addr;
1022 size -= offsetof(env_t, data);
1023 memcpy(&crc, &ep->crc, sizeof(crc));
1025 if (crc32(0, ep->data, size) != crc) {
1026 puts("## Error: bad CRC, import failed\n");
1029 addr = (char *)ep->data;
1032 if (himport_r(&env_htab, addr, size, sep, del ? 0 : H_NOCLEAR,
1034 error("Environment import failed: errno = %d\n", errno);
1037 gd->flags |= GD_FLG_ENV_READY;
1042 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
1049 * New command line interface: "env" command with subcommands
1051 static cmd_tbl_t cmd_env_sub[] = {
1052 #if defined(CONFIG_CMD_ASKENV)
1053 U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""),
1055 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""),
1056 U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS, 0, do_env_delete, "", ""),
1057 #if defined(CONFIG_CMD_EDITENV)
1058 U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
1060 #if defined(CONFIG_CMD_ENV_CALLBACK)
1061 U_BOOT_CMD_MKENT(callbacks, 1, 0, do_env_callback, "", ""),
1063 #if defined(CONFIG_CMD_ENV_FLAGS)
1064 U_BOOT_CMD_MKENT(flags, 1, 0, do_env_flags, "", ""),
1066 #if defined(CONFIG_CMD_EXPORTENV)
1067 U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
1069 #if defined(CONFIG_CMD_GREPENV)
1070 U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""),
1072 #if defined(CONFIG_CMD_IMPORTENV)
1073 U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
1075 U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
1076 #if defined(CONFIG_CMD_RUN)
1077 U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),
1079 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1080 U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""),
1082 U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""),
1085 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
1086 void env_reloc(void)
1088 fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1092 static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1097 return CMD_RET_USAGE;
1099 /* drop initial "env" arg */
1103 cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1106 return cp->cmd(cmdtp, flag, argc, argv);
1108 return CMD_RET_USAGE;
1111 #ifdef CONFIG_SYS_LONGHELP
1112 static char env_help_text[] =
1113 #if defined(CONFIG_CMD_ASKENV)
1114 "ask name [message] [size] - ask for environment variable\nenv "
1116 #if defined(CONFIG_CMD_ENV_CALLBACK)
1117 "callbacks - print callbacks and their associated variables\nenv "
1119 "default [-f] -a - [forcibly] reset default environment\n"
1120 "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
1121 "env delete [-f] var [...] - [forcibly] delete variable(s)\n"
1122 #if defined(CONFIG_CMD_EDITENV)
1123 "env edit name - edit environment variable\n"
1125 #if defined(CONFIG_CMD_EXPORTENV)
1126 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
1128 #if defined(CONFIG_CMD_ENV_FLAGS)
1129 "env flags - print variables that have non-default flags\n"
1131 #if defined(CONFIG_CMD_GREPENV)
1132 "env grep string [...] - search environment\n"
1134 #if defined(CONFIG_CMD_IMPORTENV)
1135 "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
1137 "env print [-a | name ...] - print environment\n"
1138 #if defined(CONFIG_CMD_RUN)
1139 "env run var [...] - run commands in an environment variable\n"
1141 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1142 "env save - save environment\n"
1144 "env set [-f] name [arg ...]\n";
1148 env, CONFIG_SYS_MAXARGS, 1, do_env,
1149 "environment handling commands", env_help_text
1153 * Old command line interface, kept for compatibility
1156 #if defined(CONFIG_CMD_EDITENV)
1157 U_BOOT_CMD_COMPLETE(
1158 editenv, 2, 0, do_env_edit,
1159 "edit environment variable",
1161 " - edit environment variable 'name'",
1166 U_BOOT_CMD_COMPLETE(
1167 printenv, CONFIG_SYS_MAXARGS, 1, do_env_print,
1168 "print environment variables",
1169 "[-a]\n - print [all] values of all environment variables\n"
1170 "printenv name ...\n"
1171 " - print value of environment variable 'name'",
1175 #ifdef CONFIG_CMD_GREPENV
1176 U_BOOT_CMD_COMPLETE(
1177 grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep,
1178 "search environment variables",
1180 " - list environment name=value pairs matching 'string'",
1185 U_BOOT_CMD_COMPLETE(
1186 setenv, CONFIG_SYS_MAXARGS, 0, do_env_set,
1187 "set environment variables",
1188 "[-f] name value ...\n"
1189 " - [forcibly] set environment variable 'name' to 'value ...'\n"
1190 "setenv [-f] name\n"
1191 " - [forcibly] delete environment variable 'name'",
1195 #if defined(CONFIG_CMD_ASKENV)
1198 askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask,
1199 "get environment variables from stdin",
1200 "name [message] [size]\n"
1201 " - get environment variable 'name' from stdin (max 'size' chars)"
1205 #if defined(CONFIG_CMD_RUN)
1206 U_BOOT_CMD_COMPLETE(
1207 run, CONFIG_SYS_MAXARGS, 1, do_run,
1208 "run commands in an environment variable",
1210 " - run the commands in the environment variable(s) 'var'",
1214 #endif /* CONFIG_SPL_BUILD */