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common/cmd_nvedit.c
28.9 KB
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/* |
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* (C) Copyright 2000-2013 |
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Andreas Heppel <aheppel@sysgo.de> |
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* * Copyright 2011 Freescale Semiconductor, Inc. * |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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/* |
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* Support for persistent environment data * |
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* The "environment" is stored on external storage as a list of '\0' * terminated "name=value" strings. The end of the list is marked by * a double '\0'. The environment is preceeded by a 32 bit CRC over * the data part and, in case of redundant environment, a byte of * flags. |
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* |
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* This linearized representation will also be used before * relocation, i. e. as long as we don't have a full C runtime * environment. After that, we use a hash table. |
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*/ #include <common.h> #include <command.h> #include <environment.h> |
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#include <search.h> #include <errno.h> |
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#include <malloc.h> |
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#include <watchdog.h> |
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#include <linux/stddef.h> #include <asm/byteorder.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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#if !defined(CONFIG_ENV_IS_IN_EEPROM) && \ !defined(CONFIG_ENV_IS_IN_FLASH) && \ !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ |
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!defined(CONFIG_ENV_IS_IN_MMC) && \ |
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!defined(CONFIG_ENV_IS_IN_FAT) && \ |
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!defined(CONFIG_ENV_IS_IN_NAND) && \ !defined(CONFIG_ENV_IS_IN_NVRAM) && \ !defined(CONFIG_ENV_IS_IN_ONENAND) && \ !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ |
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!defined(CONFIG_ENV_IS_IN_REMOTE) && \ |
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!defined(CONFIG_ENV_IS_IN_UBI) && \ |
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!defined(CONFIG_ENV_IS_NOWHERE) |
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# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ |
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SPI_FLASH|NVRAM|MMC|FAT|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE |
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#endif |
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/* * Maximum expected input data size for import command */ #define MAX_ENV_SIZE (1 << 20) /* 1 MiB */ |
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/* |
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* This variable is incremented on each do_env_set(), so it can |
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* be used via get_env_id() as an indication, if the environment * has changed or not. So it is possible to reread an environment * variable only if the environment was changed ... done so for * example in NetInitLoop() */ |
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static int env_id = 1; |
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int get_env_id(void) |
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{ return env_id; } |
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#ifndef CONFIG_SPL_BUILD |
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/* |
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* Command interface: print one or all environment variables * * Returns 0 in case of error, or length of printed string |
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*/ |
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static int env_print(char *name, int flag) |
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{ |
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char *res = NULL; |
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ssize_t len; |
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if (name) { /* print a single name */ ENTRY e, *ep; e.key = name; e.data = NULL; |
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hsearch_r(e, FIND, &ep, &env_htab, flag); |
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if (ep == NULL) return 0; |
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len = printf("%s=%s ", ep->key, ep->data); |
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return len; } |
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/* print whole list */ |
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len = hexport_r(&env_htab, ' ', flag, &res, 0, 0, NULL); |
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if (len > 0) { puts(res); free(res); return len; |
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} |
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/* should never happen */ |
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printf("## Error: cannot export environment "); |
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return 0; |
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} |
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static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ int i; int rcode = 0; |
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int env_flag = H_HIDE_DOT; if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') { argc--; argv++; env_flag &= ~H_HIDE_DOT; } |
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if (argc == 1) { /* print all env vars */ |
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rcode = env_print(NULL, env_flag); |
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if (!rcode) |
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return 1; printf(" Environment size: %d/%ld bytes ", rcode, (ulong)ENV_SIZE); return 0; } |
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/* print selected env vars */ |
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env_flag &= ~H_HIDE_DOT; |
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for (i = 1; i < argc; ++i) { |
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int rc = env_print(argv[i], env_flag); |
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if (!rc) { printf("## Error: \"%s\" not defined ", argv[i]); |
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++rcode; |
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} } |
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return rcode; } |
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#ifdef CONFIG_CMD_GREPENV |
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static int do_env_grep(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ |
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char *res = NULL; |
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int len, grep_how, grep_what; |
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if (argc < 2) |
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return CMD_RET_USAGE; |
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grep_how = H_MATCH_SUBSTR; /* default: substring search */ grep_what = H_MATCH_BOTH; /* default: grep names and values */ |
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while (--argc > 0 && **++argv == '-') { char *arg = *argv; |
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while (*++arg) { switch (*arg) { |
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#ifdef CONFIG_REGEX case 'e': /* use regex matching */ grep_how = H_MATCH_REGEX; break; #endif |
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case 'n': /* grep for name */ |
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grep_what = H_MATCH_KEY; |
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break; case 'v': /* grep for value */ |
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grep_what = H_MATCH_DATA; |
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break; case 'b': /* grep for both */ |
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grep_what = H_MATCH_BOTH; |
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break; case '-': goto DONE; default: return CMD_RET_USAGE; } } } DONE: |
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len = hexport_r(&env_htab, ' ', |
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flag | grep_what | grep_how, |
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&res, 0, argc, argv); |
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if (len > 0) { puts(res); free(res); |
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} |
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if (len < 2) return 1; return 0; |
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} #endif |
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#endif /* CONFIG_SPL_BUILD */ |
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/* |
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* Set a new environment variable, * or replace or delete an existing one. |
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*/ |
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static int _do_env_set(int flag, int argc, char * const argv[]) |
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{ int i, len; char *name, *value, *s; ENTRY e, *ep; |
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int env_flag = H_INTERACTIVE; |
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debug("Initial value for argc=%d ", argc); while (argc > 1 && **(argv + 1) == '-') { char *arg = *++argv; --argc; while (*++arg) { switch (*arg) { case 'f': /* force */ env_flag |= H_FORCE; break; default: return CMD_RET_USAGE; } } } debug("Final value for argc=%d ", argc); |
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name = argv[1]; value = argv[2]; if (strchr(name, '=')) { printf("## Error: illegal character '='" "in variable name \"%s\" ", name); return 1; } env_id++; |
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/* Delete only ? */ |
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if (argc < 3 || argv[2] == NULL) { |
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int rc = hdelete_r(name, &env_htab, env_flag); |
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return !rc; |
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} /* |
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* Insert / replace new value |
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*/ |
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for (i = 2, len = 0; i < argc; ++i) |
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len += strlen(argv[i]) + 1; |
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value = malloc(len); if (value == NULL) { |
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printf("## Can't malloc %d bytes ", len); |
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return 1; } |
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for (i = 2, s = value; i < argc; ++i) { |
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char *v = argv[i]; |
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while ((*s++ = *v++) != '\0') |
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; |
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*(s - 1) = ' '; |
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} if (s != value) *--s = '\0'; |
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e.key = name; e.data = value; |
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hsearch_r(e, ENTER, &ep, &env_htab, env_flag); |
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free(value); if (!ep) { printf("## Error inserting \"%s\" variable, errno=%d ", name, errno); return 1; |
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} |
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return 0; } |
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int setenv(const char *varname, const char *varvalue) |
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{ |
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const char * const argv[4] = { "setenv", varname, varvalue, NULL }; |
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/* before import into hashtable */ if (!(gd->flags & GD_FLG_ENV_READY)) return 1; |
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if (varvalue == NULL || varvalue[0] == '\0') |
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return _do_env_set(0, 2, (char * const *)argv); |
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else |
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return _do_env_set(0, 3, (char * const *)argv); |
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} |
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/** * Set an environment variable to an integer value * |
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* @param varname Environment variable to set |
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* @param value Value to set it to * @return 0 if ok, 1 on error */ int setenv_ulong(const char *varname, ulong value) { /* TODO: this should be unsigned */ char *str = simple_itoa(value); return setenv(varname, str); } /** |
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* Set an environment variable to an value in hex |
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* |
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* @param varname Environment variable to set |
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* @param value Value to set it to |
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* @return 0 if ok, 1 on error */ |
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int setenv_hex(const char *varname, ulong value) |
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{ char str[17]; |
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sprintf(str, "%lx", value); |
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return setenv(varname, str); } |
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ulong getenv_hex(const char *varname, ulong default_val) { const char *s; ulong value; char *endp; s = getenv(varname); if (s) value = simple_strtoul(s, &endp, 16); if (!s || endp == s) return default_val; return value; } |
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#ifndef CONFIG_SPL_BUILD |
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static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ |
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if (argc < 2) |
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return CMD_RET_USAGE; |
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return _do_env_set(flag, argc, argv); |
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} |
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/* |
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* Prompt for environment variable */ |
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#if defined(CONFIG_CMD_ASKENV) |
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int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ |
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char message[CONFIG_SYS_CBSIZE]; |
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int i, len, pos, size; |
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char *local_args[4]; |
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char *endptr; |
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local_args[0] = argv[0]; local_args[1] = argv[1]; local_args[2] = NULL; local_args[3] = NULL; |
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/* * Check the syntax: * * env_ask envname [message1 ...] [size] */ if (argc == 1) |
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return CMD_RET_USAGE; |
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/* * We test the last argument if it can be converted * into a decimal number. If yes, we assume it's * the size. Otherwise we echo it as part of the * message. */ i = simple_strtoul(argv[argc - 1], &endptr, 10); if (*endptr != '\0') { /* no size */ size = CONFIG_SYS_CBSIZE - 1; } else { /* size given */ size = i; --argc; } |
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if (argc <= 2) { sprintf(message, "Please enter '%s': ", argv[1]); } else { /* env_ask envname message1 ... messagen [size] */ for (i = 2, pos = 0; i < argc; i++) { |
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if (pos) |
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message[pos++] = ' '; |
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strcpy(message + pos, argv[i]); |
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pos += strlen(argv[i]); } |
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message[pos++] = ' '; |
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message[pos] = '\0'; |
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} |
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if (size >= CONFIG_SYS_CBSIZE) size = CONFIG_SYS_CBSIZE - 1; |
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if (size <= 0) return 1; /* prompt for input */ |
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len = readline(message); |
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if (size < len) console_buffer[size] = '\0'; len = 2; if (console_buffer[0] != '\0') { local_args[2] = console_buffer; len = 3; } /* Continue calling setenv code */ |
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return _do_env_set(flag, len, local_args); |
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} |
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#endif |
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#if defined(CONFIG_CMD_ENV_CALLBACK) static int print_static_binding(const char *var_name, const char *callback_name) { printf("\t%-20s %-20s ", var_name, callback_name); return 0; } static int print_active_callback(ENTRY *entry) { struct env_clbk_tbl *clbkp; int i; int num_callbacks; if (entry->callback == NULL) return 0; /* look up the callback in the linker-list */ num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk); for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk); i < num_callbacks; i++, clbkp++) { #if defined(CONFIG_NEEDS_MANUAL_RELOC) if (entry->callback == clbkp->callback + gd->reloc_off) #else if (entry->callback == clbkp->callback) #endif break; } if (i == num_callbacks) /* this should probably never happen, but just in case... */ printf("\t%-20s %p ", entry->key, entry->callback); else printf("\t%-20s %-20s ", entry->key, clbkp->name); return 0; } /* * Print the callbacks available and what they are bound to */ int do_env_callback(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { struct env_clbk_tbl *clbkp; int i; int num_callbacks; /* Print the available callbacks */ puts("Available callbacks: "); puts("\tCallback Name "); puts("\t------------- "); num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk); for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk); i < num_callbacks; i++, clbkp++) printf("\t%s ", clbkp->name); puts(" "); /* Print the static bindings that may exist */ puts("Static callback bindings: "); printf("\t%-20s %-20s ", "Variable Name", "Callback Name"); printf("\t%-20s %-20s ", "-------------", "-------------"); env_attr_walk(ENV_CALLBACK_LIST_STATIC, print_static_binding); puts(" "); /* walk through each variable and print the callback if it has one */ puts("Active callback bindings: "); printf("\t%-20s %-20s ", "Variable Name", "Callback Name"); printf("\t%-20s %-20s ", "-------------", "-------------"); hwalk_r(&env_htab, print_active_callback); return 0; } #endif |
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#if defined(CONFIG_CMD_ENV_FLAGS) static int print_static_flags(const char *var_name, const char *flags) { enum env_flags_vartype type = env_flags_parse_vartype(flags); |
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enum env_flags_varaccess access = env_flags_parse_varaccess(flags); |
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printf("\t%-20s %-20s %-20s ", var_name, env_flags_get_vartype_name(type), env_flags_get_varaccess_name(access)); |
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return 0; } static int print_active_flags(ENTRY *entry) { enum env_flags_vartype type; |
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enum env_flags_varaccess access; |
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if (entry->flags == 0) return 0; type = (enum env_flags_vartype) (entry->flags & ENV_FLAGS_VARTYPE_BIN_MASK); |
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access = env_flags_parse_varaccess_from_binflags(entry->flags); printf("\t%-20s %-20s %-20s ", entry->key, env_flags_get_vartype_name(type), env_flags_get_varaccess_name(access)); |
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return 0; } /* * Print the flags available and what variables have flags */ int do_env_flags(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { /* Print the available variable types */ printf("Available variable type flags (position %d): ", ENV_FLAGS_VARTYPE_LOC); puts("\tFlag\tVariable Type Name "); puts("\t----\t------------------ "); env_flags_print_vartypes(); puts(" "); |
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/* Print the available variable access types */ printf("Available variable access flags (position %d): ", ENV_FLAGS_VARACCESS_LOC); puts("\tFlag\tVariable Access Name "); puts("\t----\t-------------------- "); env_flags_print_varaccess(); puts(" "); |
fffad71bc
|
570 571 572 |
/* Print the static flags that may exist */ puts("Static flags: "); |
267541f77
|
573 574 575 576 577 578 |
printf("\t%-20s %-20s %-20s ", "Variable Name", "Variable Type", "Variable Access"); printf("\t%-20s %-20s %-20s ", "-------------", "-------------", "---------------"); |
fffad71bc
|
579 580 581 582 583 584 585 |
env_attr_walk(ENV_FLAGS_LIST_STATIC, print_static_flags); puts(" "); /* walk through each variable and print the flags if non-default */ puts("Active flags: "); |
267541f77
|
586 587 588 589 590 591 |
printf("\t%-20s %-20s %-20s ", "Variable Name", "Variable Type", "Variable Access"); printf("\t%-20s %-20s %-20s ", "-------------", "-------------", "---------------"); |
fffad71bc
|
592 593 594 595 |
hwalk_r(&env_htab, print_active_flags); return 0; } #endif |
ea882baf9
|
596 |
/* |
246c69225
|
597 598 599 |
* Interactively edit an environment variable */ #if defined(CONFIG_CMD_EDITENV) |
088f1b199
|
600 601 |
static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
246c69225
|
602 603 604 |
{ char buffer[CONFIG_SYS_CBSIZE]; char *init_val; |
246c69225
|
605 |
|
47e26b1bf
|
606 |
if (argc < 2) |
4c12eeb8b
|
607 |
return CMD_RET_USAGE; |
246c69225
|
608 609 610 611 |
/* Set read buffer to initial value or empty sting */ init_val = getenv(argv[1]); if (init_val) |
7fcd9bbd6
|
612 |
sprintf(buffer, "%s", init_val); |
246c69225
|
613 614 |
else buffer[0] = '\0'; |
18a3cce9f
|
615 616 |
if (readline_into_buffer("edit: ", buffer, 0) < 0) return 1; |
246c69225
|
617 618 619 620 |
return setenv(argv[1], buffer); } #endif /* CONFIG_CMD_EDITENV */ |
7ac2fe2da
|
621 |
#endif /* CONFIG_SPL_BUILD */ |
246c69225
|
622 |
|
ea882baf9
|
623 |
/* |
a68d3ed0a
|
624 625 626 627 |
* Look up variable from environment, * return address of storage for that variable, * or NULL if not found */ |
84b5e8022
|
628 |
char *getenv(const char *name) |
a68d3ed0a
|
629 |
{ |
d09b1787a
|
630 |
if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */ |
ea882baf9
|
631 |
ENTRY e, *ep; |
a68d3ed0a
|
632 |
|
91a76751a
|
633 |
WATCHDOG_RESET(); |
2a3cb0207
|
634 |
|
d09b1787a
|
635 636 |
e.key = name; e.data = NULL; |
c4e0057fa
|
637 |
hsearch_r(e, FIND, &ep, &env_htab, 0); |
91a76751a
|
638 |
|
f3c615b8a
|
639 |
return ep ? ep->data : NULL; |
a68d3ed0a
|
640 |
} |
ea882baf9
|
641 |
/* restricted capabilities before import */ |
ea882baf9
|
642 643 |
if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0) return (char *)(gd->env_buf); |
91a76751a
|
644 |
|
ea882baf9
|
645 |
return NULL; |
a68d3ed0a
|
646 |
} |
ea882baf9
|
647 648 649 |
/* * Look up variable from environment for restricted C runtime env. */ |
84b5e8022
|
650 |
int getenv_f(const char *name, char *buf, unsigned len) |
a68d3ed0a
|
651 652 |
{ int i, nxt; |
d09b1787a
|
653 |
for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) { |
a68d3ed0a
|
654 |
int val, n; |
f3c615b8a
|
655 656 657 |
for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) { if (nxt >= CONFIG_ENV_SIZE) return -1; |
a68d3ed0a
|
658 |
} |
f3c615b8a
|
659 660 661 |
val = envmatch((uchar *)name, i); if (val < 0) |
a68d3ed0a
|
662 |
continue; |
9ed4a9582
|
663 |
|
a68d3ed0a
|
664 |
/* found; copy out */ |
f3c615b8a
|
665 |
for (n = 0; n < len; ++n, ++buf) { |
d09b1787a
|
666 667 |
*buf = env_get_char(val++); if (*buf == '\0') |
9ed4a9582
|
668 669 670 671 672 |
return n; } if (n) *--buf = '\0'; |
a02a884b9
|
673 674 675 |
printf("env_buf [%d bytes] too small for value of \"%s\" ", len, name); |
9ed4a9582
|
676 677 |
return n; |
a68d3ed0a
|
678 |
} |
d09b1787a
|
679 |
|
f3c615b8a
|
680 |
return -1; |
a68d3ed0a
|
681 |
} |
4a9b41310
|
682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 |
/** * Decode the integer value of an environment variable and return it. * * @param name Name of environemnt variable * @param base Number base to use (normally 10, or 16 for hex) * @param default_val Default value to return if the variable is not * found * @return the decoded value, or default_val if not found */ ulong getenv_ulong(const char *name, int base, ulong default_val) { /* * We can use getenv() here, even before relocation, since the * environment variable value is an integer and thus short. */ const char *str = getenv(name); return str ? simple_strtoul(str, NULL, base) : default_val; } |
7ac2fe2da
|
701 |
#ifndef CONFIG_SPL_BUILD |
bdab39d35
|
702 |
#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
088f1b199
|
703 704 |
static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0a
|
705 |
{ |
f3c615b8a
|
706 707 |
printf("Saving Environment to %s... ", env_name_spec); |
a68d3ed0a
|
708 |
|
f3c615b8a
|
709 |
return saveenv() ? 1 : 0; |
a68d3ed0a
|
710 |
} |
8bde7f776
|
711 |
|
ba69dc26a
|
712 |
U_BOOT_CMD( |
ea882baf9
|
713 |
saveenv, 1, 0, do_env_save, |
2fb2604d5
|
714 |
"save environment variables to persistent storage", |
a89c33db9
|
715 |
"" |
ba69dc26a
|
716 |
); |
a68d3ed0a
|
717 |
#endif |
7ac2fe2da
|
718 |
#endif /* CONFIG_SPL_BUILD */ |
a68d3ed0a
|
719 |
|
ea882baf9
|
720 |
/* |
a68d3ed0a
|
721 722 723 724 |
* Match a name / name=value pair * * s1 is either a simple 'name', or a 'name=value' pair. * i2 is the environment index for a 'name2=value2' pair. |
d09b1787a
|
725 |
* If the names match, return the index for the value2, else -1. |
a68d3ed0a
|
726 |
*/ |
f3c615b8a
|
727 |
int envmatch(uchar *s1, int i2) |
a68d3ed0a
|
728 |
{ |
586197dfe
|
729 730 |
if (s1 == NULL) return -1; |
a68d3ed0a
|
731 732 |
while (*s1 == env_get_char(i2++)) if (*s1++ == '=') |
f3c615b8a
|
733 |
return i2; |
d09b1787a
|
734 |
|
a68d3ed0a
|
735 |
if (*s1 == '\0' && env_get_char(i2-1) == '=') |
f3c615b8a
|
736 |
return i2; |
d09b1787a
|
737 |
|
f3c615b8a
|
738 |
return -1; |
a68d3ed0a
|
739 |
} |
8bde7f776
|
740 |
|
7ac2fe2da
|
741 |
#ifndef CONFIG_SPL_BUILD |
b64b7c3df
|
742 |
static int do_env_default(cmd_tbl_t *cmdtp, int __flag, |
d09b1787a
|
743 |
int argc, char * const argv[]) |
ea882baf9
|
744 |
{ |
b64b7c3df
|
745 |
int all = 0, flag = 0; |
f3c615b8a
|
746 |
|
b64b7c3df
|
747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 |
debug("Initial value for argc=%d ", argc); while (--argc > 0 && **++argv == '-') { char *arg = *argv; while (*++arg) { switch (*arg) { case 'a': /* default all */ all = 1; break; case 'f': /* force */ flag |= H_FORCE; break; default: return cmd_usage(cmdtp); } } } debug("Final value for argc=%d ", argc); if (all && (argc == 0)) { /* Reset the whole environment */ set_default_env("## Resetting to default environment "); return 0; } if (!all && (argc > 0)) { /* Reset individual variables */ set_default_vars(argc, argv); return 0; } return cmd_usage(cmdtp); |
ea882baf9
|
780 |
} |
d09b1787a
|
781 782 |
static int do_env_delete(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
ea882baf9
|
783 |
{ |
9d8d661d7
|
784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 |
int env_flag = H_INTERACTIVE; int ret = 0; debug("Initial value for argc=%d ", argc); while (argc > 1 && **(argv + 1) == '-') { char *arg = *++argv; --argc; while (*++arg) { switch (*arg) { case 'f': /* force */ env_flag |= H_FORCE; break; default: return CMD_RET_USAGE; } } } debug("Final value for argc=%d ", argc); env_id++; while (--argc > 0) { char *name = *++argv; if (!hdelete_r(name, &env_htab, env_flag)) ret = 1; } return ret; |
ea882baf9
|
816 |
} |
0c79cda01
|
817 |
#ifdef CONFIG_CMD_EXPORTENV |
ea882baf9
|
818 |
/* |
37f2fe747
|
819 |
* env export [-t | -b | -c] [-s size] addr [var ...] |
ea882baf9
|
820 821 822 823 824 825 826 827 828 |
* -t: export as text format; if size is given, data will be * padded with '\0' bytes; if not, one terminating '\0' * will be added (which is included in the "filesize" * setting so you can for exmple copy this to flash and * keep the termination). * -b: export as binary format (name=value pairs separated by * '\0', list end marked by double "\0\0") * -c: export as checksum protected environment format as * used for example by "saveenv" command |
37f2fe747
|
829 830 |
* -s size: * size of output buffer |
ea882baf9
|
831 |
* addr: memory address where environment gets stored |
37f2fe747
|
832 833 834 |
* var... List of variable names that get included into the * export. Without arguments, the whole environment gets * exported. |
ea882baf9
|
835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 |
* * With "-c" and size is NOT given, then the export command will * format the data as currently used for the persistent storage, * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and * prepend a valid CRC32 checksum and, in case of resundant * environment, a "current" redundancy flag. If size is given, this * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32 * checksum and redundancy flag will be inserted. * * With "-b" and "-t", always only the real data (including a * terminating '\0' byte) will be written; here the optional size * argument will be used to make sure not to overflow the user * provided buffer; the command will abort if the size is not * sufficient. Any remainign space will be '\0' padded. * * On successful return, the variable "filesize" will be set. * Note that filesize includes the trailing/terminating '\0' byte(s). * * Usage szenario: create a text snapshot/backup of the current settings: * * => env export -t 100000 * => era ${backup_addr} +${filesize} * => cp.b 100000 ${backup_addr} ${filesize} * * Re-import this snapshot, deleting all other settings: * * => env import -d -t ${backup_addr} */ |
d09b1787a
|
863 864 |
static int do_env_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
ea882baf9
|
865 866 867 |
{ char buf[32]; char *addr, *cmd, *res; |
37f2fe747
|
868 |
size_t size = 0; |
ea882baf9
|
869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 |
ssize_t len; env_t *envp; char sep = ' '; int chk = 0; int fmt = 0; cmd = *argv; while (--argc > 0 && **++argv == '-') { char *arg = *argv; while (*++arg) { switch (*arg) { case 'b': /* raw binary format */ if (fmt++) goto sep_err; sep = '\0'; break; case 'c': /* external checksum format */ if (fmt++) goto sep_err; sep = '\0'; chk = 1; break; |
37f2fe747
|
893 894 895 896 897 |
case 's': /* size given */ if (--argc <= 0) return cmd_usage(cmdtp); size = simple_strtoul(*++argv, NULL, 16); goto NXTARG; |
ea882baf9
|
898 899 900 901 902 903 904 |
case 't': /* text format */ if (fmt++) goto sep_err; sep = ' '; break; default: |
4c12eeb8b
|
905 |
return CMD_RET_USAGE; |
ea882baf9
|
906 907 |
} } |
37f2fe747
|
908 |
NXTARG: ; |
ea882baf9
|
909 |
} |
f3c615b8a
|
910 |
if (argc < 1) |
4c12eeb8b
|
911 |
return CMD_RET_USAGE; |
8bde7f776
|
912 |
|
ea882baf9
|
913 |
addr = (char *)simple_strtoul(argv[0], NULL, 16); |
37f2fe747
|
914 |
if (size) |
ea882baf9
|
915 |
memset(addr, '\0', size); |
37f2fe747
|
916 917 918 |
argc--; argv++; |
ea882baf9
|
919 920 |
if (sep) { /* export as text file */ |
ea009d474
|
921 922 923 |
len = hexport_r(&env_htab, sep, H_MATCH_KEY | H_MATCH_IDENT, &addr, size, argc, argv); |
ea882baf9
|
924 |
if (len < 0) { |
d09b1787a
|
925 926 |
error("Cannot export environment: errno = %d ", errno); |
ea882baf9
|
927 928 |
return 1; } |
8c3aff525
|
929 |
sprintf(buf, "%zX", (size_t)len); |
ea882baf9
|
930 931 932 933 934 935 936 937 938 939 940 |
setenv("filesize", buf); return 0; } envp = (env_t *)addr; if (chk) /* export as checksum protected block */ res = (char *)envp->data; else /* export as raw binary data */ res = addr; |
ea009d474
|
941 942 943 |
len = hexport_r(&env_htab, '\0', H_MATCH_KEY | H_MATCH_IDENT, &res, ENV_SIZE, argc, argv); |
ea882baf9
|
944 |
if (len < 0) { |
d09b1787a
|
945 946 |
error("Cannot export environment: errno = %d ", errno); |
ea882baf9
|
947 948 949 950 |
return 1; } if (chk) { |
d09b1787a
|
951 |
envp->crc = crc32(0, envp->data, ENV_SIZE); |
ea882baf9
|
952 953 954 955 |
#ifdef CONFIG_ENV_ADDR_REDUND envp->flags = ACTIVE_FLAG; #endif } |
41ef372c1
|
956 |
setenv_hex("filesize", len + offsetof(env_t, data)); |
ea882baf9
|
957 958 959 960 |
return 0; sep_err: |
d09b1787a
|
961 962 |
printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed ", cmd); |
ea882baf9
|
963 964 |
return 1; } |
0c79cda01
|
965 |
#endif |
ea882baf9
|
966 |
|
0c79cda01
|
967 |
#ifdef CONFIG_CMD_IMPORTENV |
ea882baf9
|
968 969 970 971 972 973 974 975 976 977 978 979 |
/* * env import [-d] [-t | -b | -c] addr [size] * -d: delete existing environment before importing; * otherwise overwrite / append to existion definitions * -t: assume text format; either "size" must be given or the * text data must be '\0' terminated * -b: assume binary format ('\0' separated, "\0\0" terminated) * -c: assume checksum protected environment format * addr: memory address to read from * size: length of input data; if missing, proper '\0' * termination is mandatory */ |
d09b1787a
|
980 981 |
static int do_env_import(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
ea882baf9
|
982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 |
{ char *cmd, *addr; char sep = ' '; int chk = 0; int fmt = 0; int del = 0; size_t size; cmd = *argv; while (--argc > 0 && **++argv == '-') { char *arg = *argv; while (*++arg) { switch (*arg) { case 'b': /* raw binary format */ if (fmt++) goto sep_err; sep = '\0'; break; case 'c': /* external checksum format */ if (fmt++) goto sep_err; sep = '\0'; chk = 1; break; case 't': /* text format */ if (fmt++) goto sep_err; sep = ' '; break; case 'd': del = 1; break; default: |
4c12eeb8b
|
1018 |
return CMD_RET_USAGE; |
ea882baf9
|
1019 1020 1021 |
} } } |
f3c615b8a
|
1022 |
if (argc < 1) |
4c12eeb8b
|
1023 |
return CMD_RET_USAGE; |
ea882baf9
|
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 |
if (!fmt) printf("## Warning: defaulting to text format "); addr = (char *)simple_strtoul(argv[0], NULL, 16); if (argc == 2) { size = simple_strtoul(argv[1], NULL, 16); } else { char *s = addr; size = 0; while (size < MAX_ENV_SIZE) { if ((*s == sep) && (*(s+1) == '\0')) break; ++s; ++size; } if (size == MAX_ENV_SIZE) { printf("## Warning: Input data exceeds %d bytes" " - truncated ", MAX_ENV_SIZE); } |
d3f80c77c
|
1049 |
size += 2; |
79afc88d2
|
1050 1051 |
printf("## Info: input data size = %zu = 0x%zX ", size, size); |
ea882baf9
|
1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 |
} if (chk) { uint32_t crc; env_t *ep = (env_t *)addr; size -= offsetof(env_t, data); memcpy(&crc, &ep->crc, sizeof(crc)); if (crc32(0, ep->data, size) != crc) { puts("## Error: bad CRC, import failed "); return 1; } addr = (char *)ep->data; } |
348b1f1c6
|
1068 |
if (himport_r(&env_htab, addr, size, sep, del ? 0 : H_NOCLEAR, |
c4e0057fa
|
1069 |
0, NULL) == 0) { |
ea882baf9
|
1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 |
error("Environment import failed: errno = %d ", errno); return 1; } gd->flags |= GD_FLG_ENV_READY; return 0; sep_err: printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed ", cmd); return 1; } |
0c79cda01
|
1084 |
#endif |
ea882baf9
|
1085 |
|
88733e2c6
|
1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 |
#if defined(CONFIG_CMD_ENV_EXISTS) static int do_env_exists(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { ENTRY e, *ep; if (argc < 2) return CMD_RET_USAGE; e.key = argv[1]; e.data = NULL; hsearch_r(e, FIND, &ep, &env_htab, 0); return (ep == NULL) ? 1 : 0; } #endif |
ea882baf9
|
1102 1103 1104 1105 1106 1107 1108 1109 |
/* * New command line interface: "env" command with subcommands */ static cmd_tbl_t cmd_env_sub[] = { #if defined(CONFIG_CMD_ASKENV) U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""), #endif U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""), |
9d8d661d7
|
1110 |
U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS, 0, do_env_delete, "", ""), |
ea882baf9
|
1111 1112 1113 |
#if defined(CONFIG_CMD_EDITENV) U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""), #endif |
5e2b3e0c5
|
1114 1115 1116 |
#if defined(CONFIG_CMD_ENV_CALLBACK) U_BOOT_CMD_MKENT(callbacks, 1, 0, do_env_callback, "", ""), #endif |
fffad71bc
|
1117 1118 1119 |
#if defined(CONFIG_CMD_ENV_FLAGS) U_BOOT_CMD_MKENT(flags, 1, 0, do_env_flags, "", ""), #endif |
0c79cda01
|
1120 |
#if defined(CONFIG_CMD_EXPORTENV) |
ea882baf9
|
1121 |
U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""), |
0c79cda01
|
1122 |
#endif |
a000b7950
|
1123 1124 1125 |
#if defined(CONFIG_CMD_GREPENV) U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""), #endif |
0c79cda01
|
1126 |
#if defined(CONFIG_CMD_IMPORTENV) |
ea882baf9
|
1127 |
U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""), |
0c79cda01
|
1128 |
#endif |
ea882baf9
|
1129 1130 1131 1132 1133 1134 1135 1136 |
U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""), #if defined(CONFIG_CMD_RUN) U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""), #endif #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""), #endif U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""), |
88733e2c6
|
1137 1138 1139 |
#if defined(CONFIG_CMD_ENV_EXISTS) U_BOOT_CMD_MKENT(exists, 2, 0, do_env_exists, "", ""), #endif |
ea882baf9
|
1140 |
}; |
2e5167cca
|
1141 |
#if defined(CONFIG_NEEDS_MANUAL_RELOC) |
60f7da1f4
|
1142 1143 1144 1145 1146 |
void env_reloc(void) { fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); } #endif |
f3c615b8a
|
1147 |
static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
ea882baf9
|
1148 1149 |
{ cmd_tbl_t *cp; |
5904da021
|
1150 |
if (argc < 2) |
4c12eeb8b
|
1151 |
return CMD_RET_USAGE; |
5904da021
|
1152 |
|
ea882baf9
|
1153 1154 1155 1156 1157 1158 1159 1160 |
/* drop initial "env" arg */ argc--; argv++; cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); if (cp) return cp->cmd(cmdtp, flag, argc, argv); |
4c12eeb8b
|
1161 |
return CMD_RET_USAGE; |
ea882baf9
|
1162 |
} |
088f1b199
|
1163 1164 |
#ifdef CONFIG_SYS_LONGHELP static char env_help_text[] = |
ea882baf9
|
1165 1166 1167 1168 |
#if defined(CONFIG_CMD_ASKENV) "ask name [message] [size] - ask for environment variable env " #endif |
5e2b3e0c5
|
1169 1170 1171 1172 |
#if defined(CONFIG_CMD_ENV_CALLBACK) "callbacks - print callbacks and their associated variables env " #endif |
b64b7c3df
|
1173 1174 1175 1176 |
"default [-f] -a - [forcibly] reset default environment " "env default [-f] var [...] - [forcibly] reset variable(s) to their default values " |
9d8d661d7
|
1177 1178 |
"env delete [-f] var [...] - [forcibly] delete variable(s) " |
ea882baf9
|
1179 1180 1181 1182 |
#if defined(CONFIG_CMD_EDITENV) "env edit name - edit environment variable " #endif |
88733e2c6
|
1183 1184 1185 1186 |
#if defined(CONFIG_CMD_ENV_EXISTS) "env exists name - tests for existence of variable " #endif |
4796bc4bb
|
1187 |
#if defined(CONFIG_CMD_EXPORTENV) |
37f2fe747
|
1188 1189 |
"env export [-t | -b | -c] [-s size] addr [var ...] - export environment " |
4796bc4bb
|
1190 |
#endif |
fffad71bc
|
1191 1192 1193 1194 |
#if defined(CONFIG_CMD_ENV_FLAGS) "env flags - print variables that have non-default flags " #endif |
a000b7950
|
1195 |
#if defined(CONFIG_CMD_GREPENV) |
be29df6a1
|
1196 1197 1198 1199 |
#ifdef CONFIG_REGEX "env grep [-e] [-n | -v | -b] string [...] - search environment " #else |
d87244d5a
|
1200 1201 |
"env grep [-n | -v | -b] string [...] - search environment " |
a000b7950
|
1202 |
#endif |
be29df6a1
|
1203 |
#endif |
4796bc4bb
|
1204 |
#if defined(CONFIG_CMD_IMPORTENV) |
a000b7950
|
1205 1206 |
"env import [-d] [-t | -b | -c] addr [size] - import environment " |
4796bc4bb
|
1207 |
#endif |
be11235ab
|
1208 1209 |
"env print [-a | name ...] - print environment " |
ea882baf9
|
1210 1211 1212 1213 |
#if defined(CONFIG_CMD_RUN) "env run var [...] - run commands in an environment variable " #endif |
d798a9b5d
|
1214 |
#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
ea882baf9
|
1215 1216 |
"env save - save environment " |
d798a9b5d
|
1217 |
#endif |
088f1b199
|
1218 1219 1220 1221 1222 1223 1224 |
"env set [-f] name [arg ...] "; #endif U_BOOT_CMD( env, CONFIG_SYS_MAXARGS, 1, do_env, "environment handling commands", env_help_text |
ea882baf9
|
1225 1226 1227 1228 1229 |
); /* * Old command line interface, kept for compatibility */ |
8bde7f776
|
1230 |
|
246c69225
|
1231 |
#if defined(CONFIG_CMD_EDITENV) |
722b061b6
|
1232 |
U_BOOT_CMD_COMPLETE( |
ea882baf9
|
1233 |
editenv, 2, 0, do_env_edit, |
246c69225
|
1234 1235 1236 |
"edit environment variable", "name " |
722b061b6
|
1237 1238 |
" - edit environment variable 'name'", var_complete |
246c69225
|
1239 1240 |
); #endif |
722b061b6
|
1241 |
U_BOOT_CMD_COMPLETE( |
ea882baf9
|
1242 |
printenv, CONFIG_SYS_MAXARGS, 1, do_env_print, |
2fb2604d5
|
1243 |
"print environment variables", |
be11235ab
|
1244 1245 1246 |
"[-a] - print [all] values of all environment variables " |
8bde7f776
|
1247 1248 |
"printenv name ... " |
722b061b6
|
1249 1250 |
" - print value of environment variable 'name'", var_complete |
8bde7f776
|
1251 |
); |
a000b7950
|
1252 1253 1254 1255 |
#ifdef CONFIG_CMD_GREPENV U_BOOT_CMD_COMPLETE( grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep, "search environment variables", |
be29df6a1
|
1256 1257 1258 1259 |
#ifdef CONFIG_REGEX "[-e] [-n | -v | -b] string ... " #else |
d87244d5a
|
1260 1261 |
"[-n | -v | -b] string ... " |
be29df6a1
|
1262 |
#endif |
d87244d5a
|
1263 1264 |
" - list environment name=value pairs matching 'string' " |
be29df6a1
|
1265 1266 1267 1268 |
#ifdef CONFIG_REGEX " \"-e\": enable regular expressions; " #endif |
d87244d5a
|
1269 1270 1271 |
" \"-n\": search variable names; \"-v\": search values; " " \"-b\": search both names and values (default)", |
a000b7950
|
1272 1273 1274 |
var_complete ); #endif |
722b061b6
|
1275 |
U_BOOT_CMD_COMPLETE( |
ea882baf9
|
1276 |
setenv, CONFIG_SYS_MAXARGS, 0, do_env_set, |
2fb2604d5
|
1277 |
"set environment variables", |
24ab5a191
|
1278 1279 1280 1281 1282 1283 1284 |
"[-f] name value ... " " - [forcibly] set environment variable 'name' to 'value ...' " "setenv [-f] name " " - [forcibly] delete environment variable 'name'", |
722b061b6
|
1285 |
var_complete |
8bde7f776
|
1286 |
); |
c76fe4742
|
1287 |
#if defined(CONFIG_CMD_ASKENV) |
8bde7f776
|
1288 |
|
0d4983930
|
1289 |
U_BOOT_CMD( |
ea882baf9
|
1290 |
askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask, |
2fb2604d5
|
1291 |
"get environment variables from stdin", |
8bde7f776
|
1292 1293 |
"name [message] [size] " |
7d85591dd
|
1294 |
" - get environment variable 'name' from stdin (max 'size' chars)" |
8bde7f776
|
1295 |
); |
902531788
|
1296 |
#endif |
8bde7f776
|
1297 |
|
c76fe4742
|
1298 |
#if defined(CONFIG_CMD_RUN) |
722b061b6
|
1299 |
U_BOOT_CMD_COMPLETE( |
6d0f6bcf3
|
1300 |
run, CONFIG_SYS_MAXARGS, 1, do_run, |
2fb2604d5
|
1301 |
"run commands in an environment variable", |
8bde7f776
|
1302 1303 |
"var [...] " |
722b061b6
|
1304 1305 |
" - run the commands in the environment variable(s) 'var'", var_complete |
8bde7f776
|
1306 |
); |
902531788
|
1307 |
#endif |
7ac2fe2da
|
1308 |
#endif /* CONFIG_SPL_BUILD */ |