/* * (C) Copyright 2000-2010 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH * Andreas Heppel * * Copyright 2011 Freescale Semiconductor, Inc. * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ /* * Support for persistent environment data * * 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. * * 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. */ #include #include #include #include #include #include #include #include #include #include #if defined(CONFIG_CMD_NET) #include #endif DECLARE_GLOBAL_DATA_PTR; #if !defined(CONFIG_ENV_IS_IN_EEPROM) && \ !defined(CONFIG_ENV_IS_IN_FLASH) && \ !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ !defined(CONFIG_ENV_IS_IN_MMC) && \ !defined(CONFIG_ENV_IS_IN_FAT) && \ !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) && \ !defined(CONFIG_ENV_IS_IN_REMOTE) && \ !defined(CONFIG_ENV_IS_NOWHERE) # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ SPI_FLASH|NVRAM|MMC|FAT|REMOTE} or CONFIG_ENV_IS_NOWHERE #endif /* * Maximum expected input data size for import command */ #define MAX_ENV_SIZE (1 << 20) /* 1 MiB */ ulong load_addr = CONFIG_SYS_LOAD_ADDR; /* Default Load Address */ ulong save_addr; /* Default Save Address */ ulong save_size; /* Default Save Size (in bytes) */ /* * Table with supported baudrates (defined in config_xyz.h) */ static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE; #define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0])) /* * This variable is incremented on each do_env_set(), so it can * 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() */ static int env_id = 1; int get_env_id(void) { return env_id; } #ifndef CONFIG_SPL_BUILD /* * Command interface: print one or all environment variables * * Returns 0 in case of error, or length of printed string */ static int env_print(char *name, int flag) { char *res = NULL; size_t len; if (name) { /* print a single name */ ENTRY e, *ep; e.key = name; e.data = NULL; hsearch_r(e, FIND, &ep, &env_htab, flag); if (ep == NULL) return 0; len = printf("%s=%s\n", ep->key, ep->data); return len; } /* print whole list */ len = hexport_r(&env_htab, '\n', flag, &res, 0, 0, NULL); if (len > 0) { puts(res); free(res); return len; } /* should never happen */ return 0; } static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { int i; int rcode = 0; int env_flag = H_HIDE_DOT; if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') { argc--; argv++; env_flag &= ~H_HIDE_DOT; } if (argc == 1) { /* print all env vars */ rcode = env_print(NULL, env_flag); if (!rcode) return 1; printf("\nEnvironment size: %d/%ld bytes\n", rcode, (ulong)ENV_SIZE); return 0; } /* print selected env vars */ env_flag &= ~H_HIDE_DOT; for (i = 1; i < argc; ++i) { int rc = env_print(argv[i], env_flag); if (!rc) { printf("## Error: \"%s\" not defined\n", argv[i]); ++rcode; } } return rcode; } #ifdef CONFIG_CMD_GREPENV static int do_env_grep(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { ENTRY *match; unsigned char matched[env_htab.size / 8]; int rcode = 1, arg = 1, idx; if (argc < 2) return CMD_RET_USAGE; memset(matched, 0, env_htab.size / 8); while (arg <= argc) { idx = 0; while ((idx = hstrstr_r(argv[arg], idx, &match, &env_htab))) { if (!(matched[idx / 8] & (1 << (idx & 7)))) { puts(match->key); puts("="); puts(match->data); puts("\n"); } matched[idx / 8] |= 1 << (idx & 7); rcode = 0; } arg++; } return rcode; } #endif #endif /* CONFIG_SPL_BUILD */ /* * Perform consistency checking before setting, replacing, or deleting an * environment variable, then (if successful) apply the changes to internals so * to make them effective. Code for this function was taken out of * _do_env_set(), which now calls it instead. * Also called as a callback function by himport_r(). * Returns 0 in case of success, 1 in case of failure. * When (flag & H_FORCE) is set, do not print out any error message and force * overwriting of write-once variables. */ int env_change_ok(const ENTRY *item, const char *newval, enum env_op op, int flag) { int console = -1; const char *name; #if !defined(CONFIG_ENV_OVERWRITE) && defined(CONFIG_OVERWRITE_ETHADDR_ONCE) \ && defined(CONFIG_ETHADDR) const char *oldval = NULL; if (op != env_op_create) oldval = item->data; #endif name = item->key; /* Default value for NULL to protect string-manipulating functions */ newval = newval ? : ""; /* Check for console redirection */ if (strcmp(name, "stdin") == 0) console = stdin; else if (strcmp(name, "stdout") == 0) console = stdout; else if (strcmp(name, "stderr") == 0) console = stderr; if (console != -1 && (gd->flags & GD_FLG_DEVINIT) != 0) { if ((newval == NULL) || (*newval == '\0')) { /* We cannot delete stdin/stdout/stderr */ if ((flag & H_FORCE) == 0) printf("Can't delete \"%s\"\n", name); return 1; } #ifdef CONFIG_CONSOLE_MUX if (iomux_doenv(console, newval)) return 1; #else /* Try assigning specified device */ if (console_assign(console, newval) < 0) return 1; #endif /* CONFIG_CONSOLE_MUX */ } #ifndef CONFIG_ENV_OVERWRITE /* * Some variables like "ethaddr" and "serial#" can be set only once and * cannot be deleted, unless CONFIG_ENV_OVERWRITE is defined. */ if (op != env_op_create && /* variable exists */ (flag & H_FORCE) == 0) { /* and we are not forced */ if (strcmp(name, "serial#") == 0 || (strcmp(name, "ethaddr") == 0 #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR) && strcmp(oldval, __stringify(CONFIG_ETHADDR)) != 0 #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */ )) { printf("Can't overwrite \"%s\"\n", name); return 1; } } #endif /* * When we change baudrate, or we are doing an env default -a * (which will erase all variables prior to calling this), * we want the baudrate to actually change - for real. */ if (op != env_op_create || /* variable exists */ (flag & H_NOCLEAR) == 0) { /* or env is clear */ /* * Switch to new baudrate if new baudrate is supported */ if (strcmp(name, "baudrate") == 0) { int baudrate = simple_strtoul(newval, NULL, 10); int i; for (i = 0; i < N_BAUDRATES; ++i) { if (baudrate == baudrate_table[i]) break; } if (i == N_BAUDRATES) { if ((flag & H_FORCE) == 0) printf("## Baudrate %d bps not " "supported\n", baudrate); return 1; } if (gd->baudrate == baudrate) { /* If unchanged, we just say it's OK */ return 0; } printf("## Switch baudrate to %d bps and" "press ENTER ...\n", baudrate); udelay(50000); gd->baudrate = baudrate; #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2) gd->bd->bi_baudrate = baudrate; #endif serial_setbrg(); udelay(50000); while (getc() != '\r') ; } } /* * Some variables should be updated when the corresponding * entry in the environment is changed */ if (strcmp(name, "loadaddr") == 0) { load_addr = simple_strtoul(newval, NULL, 16); return 0; } #if defined(CONFIG_CMD_NET) else if (strcmp(name, "bootfile") == 0) { copy_filename(BootFile, newval, sizeof(BootFile)); return 0; } #endif return 0; } /* * Set a new environment variable, * or replace or delete an existing one. */ static int _do_env_set(int flag, int argc, char * const argv[]) { int i, len; char *name, *value, *s; ENTRY e, *ep; name = argv[1]; value = argv[2]; if (strchr(name, '=')) { printf("## Error: illegal character '='" "in variable name \"%s\"\n", name); return 1; } env_id++; /* Delete only ? */ if (argc < 3 || argv[2] == NULL) { int rc = hdelete_r(name, &env_htab, H_INTERACTIVE); return !rc; } /* * Insert / replace new value */ for (i = 2, len = 0; i < argc; ++i) len += strlen(argv[i]) + 1; value = malloc(len); if (value == NULL) { printf("## Can't malloc %d bytes\n", len); return 1; } for (i = 2, s = value; i < argc; ++i) { char *v = argv[i]; while ((*s++ = *v++) != '\0') ; *(s - 1) = ' '; } if (s != value) *--s = '\0'; e.key = name; e.data = value; hsearch_r(e, ENTER, &ep, &env_htab, H_INTERACTIVE); free(value); if (!ep) { printf("## Error inserting \"%s\" variable, errno=%d\n", name, errno); return 1; } return 0; } int setenv(const char *varname, const char *varvalue) { const char * const argv[4] = { "setenv", varname, varvalue, NULL }; if (varvalue == NULL || varvalue[0] == '\0') return _do_env_set(0, 2, (char * const *)argv); else return _do_env_set(0, 3, (char * const *)argv); } /** * Set an environment variable to an integer value * * @param varname Environmet variable to set * @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); } /** * Set an environment variable to an address in hex * * @param varname Environmet variable to set * @param addr Value to set it to * @return 0 if ok, 1 on error */ int setenv_addr(const char *varname, const void *addr) { char str[17]; sprintf(str, "%lx", (uintptr_t)addr); return setenv(varname, str); } #ifndef CONFIG_SPL_BUILD static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { if (argc < 2) return CMD_RET_USAGE; return _do_env_set(flag, argc, argv); } /* * Prompt for environment variable */ #if defined(CONFIG_CMD_ASKENV) int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { char message[CONFIG_SYS_CBSIZE]; int size = CONFIG_SYS_CBSIZE - 1; int i, len, pos; char *local_args[4]; local_args[0] = argv[0]; local_args[1] = argv[1]; local_args[2] = NULL; local_args[3] = NULL; /* Check the syntax */ switch (argc) { case 1: return CMD_RET_USAGE; case 2: /* env_ask envname */ sprintf(message, "Please enter '%s':", argv[1]); break; case 3: /* env_ask envname size */ sprintf(message, "Please enter '%s':", argv[1]); size = simple_strtoul(argv[2], NULL, 10); break; default: /* env_ask envname message1 ... messagen size */ for (i = 2, pos = 0; i < argc - 1; i++) { if (pos) message[pos++] = ' '; strcpy(message + pos, argv[i]); pos += strlen(argv[i]); } message[pos] = '\0'; size = simple_strtoul(argv[argc - 1], NULL, 10); break; } if (size >= CONFIG_SYS_CBSIZE) size = CONFIG_SYS_CBSIZE - 1; if (size <= 0) return 1; /* prompt for input */ len = readline(message); 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 */ return _do_env_set(flag, len, local_args); } #endif /* * Interactively edit an environment variable */ #if defined(CONFIG_CMD_EDITENV) static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { char buffer[CONFIG_SYS_CBSIZE]; char *init_val; if (argc < 2) return CMD_RET_USAGE; /* Set read buffer to initial value or empty sting */ init_val = getenv(argv[1]); if (init_val) sprintf(buffer, "%s", init_val); else buffer[0] = '\0'; readline_into_buffer("edit: ", buffer, 0); return setenv(argv[1], buffer); } #endif /* CONFIG_CMD_EDITENV */ #endif /* CONFIG_SPL_BUILD */ /* * Look up variable from environment, * return address of storage for that variable, * or NULL if not found */ char *getenv(const char *name) { if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */ ENTRY e, *ep; WATCHDOG_RESET(); e.key = name; e.data = NULL; hsearch_r(e, FIND, &ep, &env_htab, 0); return ep ? ep->data : NULL; } /* restricted capabilities before import */ if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0) return (char *)(gd->env_buf); return NULL; } /* * Look up variable from environment for restricted C runtime env. */ int getenv_f(const char *name, char *buf, unsigned len) { int i, nxt; for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) { int val, n; for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) { if (nxt >= CONFIG_ENV_SIZE) return -1; } val = envmatch((uchar *)name, i); if (val < 0) continue; /* found; copy out */ for (n = 0; n < len; ++n, ++buf) { *buf = env_get_char(val++); if (*buf == '\0') return n; } if (n) *--buf = '\0'; printf("env_buf [%d bytes] too small for value of \"%s\"\n", len, name); return n; } return -1; } /** * 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; } #ifndef CONFIG_SPL_BUILD #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { printf("Saving Environment to %s...\n", env_name_spec); return saveenv() ? 1 : 0; } U_BOOT_CMD( saveenv, 1, 0, do_env_save, "save environment variables to persistent storage", "" ); #endif #endif /* CONFIG_SPL_BUILD */ /* * 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. * If the names match, return the index for the value2, else -1. */ int envmatch(uchar *s1, int i2) { if (s1 == NULL) return -1; while (*s1 == env_get_char(i2++)) if (*s1++ == '=') return i2; if (*s1 == '\0' && env_get_char(i2-1) == '=') return i2; return -1; } #ifndef CONFIG_SPL_BUILD static int do_env_default(cmd_tbl_t *cmdtp, int __flag, int argc, char * const argv[]) { int all = 0, flag = 0; debug("Initial value for argc=%d\n", 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\n", argc); if (all && (argc == 0)) { /* Reset the whole environment */ set_default_env("## Resetting to default environment\n"); return 0; } if (!all && (argc > 0)) { /* Reset individual variables */ set_default_vars(argc, argv); return 0; } return cmd_usage(cmdtp); } static int do_env_delete(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { printf("Not implemented yet\n"); return 0; } #ifdef CONFIG_CMD_EXPORTENV /* * env export [-t | -b | -c] [-s size] addr [var ...] * -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 * -s size: * size of output buffer * addr: memory address where environment gets stored * var... List of variable names that get included into the * export. Without arguments, the whole environment gets * exported. * * 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} */ static int do_env_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { char buf[32]; char *addr, *cmd, *res; size_t size = 0; ssize_t len; env_t *envp; char sep = '\n'; 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; case 's': /* size given */ if (--argc <= 0) return cmd_usage(cmdtp); size = simple_strtoul(*++argv, NULL, 16); goto NXTARG; case 't': /* text format */ if (fmt++) goto sep_err; sep = '\n'; break; default: return CMD_RET_USAGE; } } NXTARG: ; } if (argc < 1) return CMD_RET_USAGE; addr = (char *)simple_strtoul(argv[0], NULL, 16); if (size) memset(addr, '\0', size); argc--; argv++; if (sep) { /* export as text file */ len = hexport_r(&env_htab, sep, 0, &addr, size, argc, argv); if (len < 0) { error("Cannot export environment: errno = %d\n", errno); return 1; } sprintf(buf, "%zX", (size_t)len); 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; len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, argc, argv); if (len < 0) { error("Cannot export environment: errno = %d\n", errno); return 1; } if (chk) { envp->crc = crc32(0, envp->data, ENV_SIZE); #ifdef CONFIG_ENV_ADDR_REDUND envp->flags = ACTIVE_FLAG; #endif } sprintf(buf, "%zX", (size_t)(len + offsetof(env_t, data))); setenv("filesize", buf); return 0; sep_err: printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd); return 1; } #endif #ifdef CONFIG_CMD_IMPORTENV /* * 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 */ static int do_env_import(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { char *cmd, *addr; char sep = '\n'; 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 = '\n'; break; case 'd': del = 1; break; default: return CMD_RET_USAGE; } } } if (argc < 1) return CMD_RET_USAGE; if (!fmt) printf("## Warning: defaulting to text format\n"); 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\n", MAX_ENV_SIZE); } size += 2; printf("## Info: input data size = %zu = 0x%zX\n", size, size); } 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\n"); return 1; } addr = (char *)ep->data; } if (himport_r(&env_htab, addr, size, sep, del ? 0 : H_NOCLEAR, 0, NULL) == 0) { error("Environment import failed: errno = %d\n", errno); return 1; } gd->flags |= GD_FLG_ENV_READY; return 0; sep_err: printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd); return 1; } #endif /* * 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, "", ""), U_BOOT_CMD_MKENT(delete, 2, 0, do_env_delete, "", ""), #if defined(CONFIG_CMD_EDITENV) U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""), #endif #if defined(CONFIG_CMD_EXPORTENV) U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""), #endif #if defined(CONFIG_CMD_GREPENV) U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""), #endif #if defined(CONFIG_CMD_IMPORTENV) U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""), #endif 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, "", ""), }; #if defined(CONFIG_NEEDS_MANUAL_RELOC) void env_reloc(void) { fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); } #endif static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { cmd_tbl_t *cp; if (argc < 2) return CMD_RET_USAGE; /* 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); return CMD_RET_USAGE; } #ifdef CONFIG_SYS_LONGHELP static char env_help_text[] = #if defined(CONFIG_CMD_ASKENV) "ask name [message] [size] - ask for environment variable\nenv " #endif "default [-f] -a - [forcibly] reset default environment\n" "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n" #if defined(CONFIG_CMD_EDITENV) "env edit name - edit environment variable\n" #endif #if defined(CONFIG_CMD_EXPORTENV) "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n" #endif #if defined(CONFIG_CMD_GREPENV) "env grep string [...] - search environment\n" #endif #if defined(CONFIG_CMD_IMPORTENV) "env import [-d] [-t | -b | -c] addr [size] - import environment\n" #endif "env print [-a | name ...] - print environment\n" #if defined(CONFIG_CMD_RUN) "env run var [...] - run commands in an environment variable\n" #endif #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) "env save - save environment\n" #endif "env set [-f] name [arg ...]\n"; #endif U_BOOT_CMD( env, CONFIG_SYS_MAXARGS, 1, do_env, "environment handling commands", env_help_text ); /* * Old command line interface, kept for compatibility */ #if defined(CONFIG_CMD_EDITENV) U_BOOT_CMD_COMPLETE( editenv, 2, 0, do_env_edit, "edit environment variable", "name\n" " - edit environment variable 'name'", var_complete ); #endif U_BOOT_CMD_COMPLETE( printenv, CONFIG_SYS_MAXARGS, 1, do_env_print, "print environment variables", "[-a]\n - print [all] values of all environment variables\n" "printenv name ...\n" " - print value of environment variable 'name'", var_complete ); #ifdef CONFIG_CMD_GREPENV U_BOOT_CMD_COMPLETE( grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep, "search environment variables", "string ...\n" " - list environment name=value pairs matching 'string'", var_complete ); #endif U_BOOT_CMD_COMPLETE( setenv, CONFIG_SYS_MAXARGS, 0, do_env_set, "set environment variables", "name value ...\n" " - set environment variable 'name' to 'value ...'\n" "setenv name\n" " - delete environment variable 'name'", var_complete ); #if defined(CONFIG_CMD_ASKENV) U_BOOT_CMD( askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask, "get environment variables from stdin", "name [message] [size]\n" " - get environment variable 'name' from stdin (max 'size' chars)\n" "askenv name\n" " - get environment variable 'name' from stdin\n" "askenv name size\n" " - get environment variable 'name' from stdin (max 'size' chars)\n" "askenv name [message] size\n" " - display 'message' string and get environment variable 'name'" "from stdin (max 'size' chars)" ); #endif #if defined(CONFIG_CMD_RUN) U_BOOT_CMD_COMPLETE( run, CONFIG_SYS_MAXARGS, 1, do_run, "run commands in an environment variable", "var [...]\n" " - run the commands in the environment variable(s) 'var'", var_complete ); #endif #endif /* CONFIG_SPL_BUILD */