diff options
Diffstat (limited to 'common/cmd_nvedit.c')
| -rw-r--r-- | common/cmd_nvedit.c | 678 |
1 files changed, 469 insertions, 209 deletions
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index c941b95fbcf..c3d63b8a432 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -1,5 +1,5 @@ /* - * (C) Copyright 2000-2002 + * (C) Copyright 2000-2010 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> @@ -24,27 +24,26 @@ * MA 02111-1307 USA */ -/************************************************************************** - * +/* * Support for persistent environment data * - * The "environment" is stored as a list of '\0' terminated - * "name=value" strings. The end of the list is marked by a double - * '\0'. New entries are always added at the end. Deleting an entry - * shifts the remaining entries to the front. Replacing an entry is a - * combination of deleting the old value and adding the new one. - * - * The environment is preceeded by a 32 bit CRC over the data part. + * 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 <common.h> #include <command.h> #include <environment.h> -#if defined(CONFIG_CMD_EDITENV) +#include <search.h> +#include <errno.h> #include <malloc.h> -#endif #include <watchdog.h> #include <serial.h> #include <linux/stddef.h> @@ -72,8 +71,10 @@ SPI_FLASH|MG_DISK|NVRAM|MMC|NOWHERE} #define XMK_STR(x) #x #define MK_STR(x) XMK_STR(x) -/************************************************************************ -************************************************************************/ +/* + * Maximum expected input data size for import command + */ +#define MAX_ENV_SIZE (1 << 20) /* 1 MiB */ /* * Table with supported baudrates (defined in config_xyz.h) @@ -82,7 +83,7 @@ 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_setenv (), so it can + * 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 @@ -94,61 +95,51 @@ int get_env_id (void) { return env_id; } -/************************************************************************ - * Command interface: print one or all environment variables - */ /* - * state 0: finish printing this string and return (matched!) - * state 1: no matching to be done; print everything - * state 2: continue searching for matched name + * Command interface: print one or all environment variables + * + * Returns 0 in case of error, or length of printed string */ -static int printenv(char *name, int state) +static int env_print(char *name) { - int i, j; - char c, buf[17]; - - i = 0; - buf[16] = '\0'; - - while (state && env_get_char(i) != '\0') { - if (state == 2 && envmatch((uchar *)name, i) >= 0) - state = 0; - - j = 0; - do { - buf[j++] = c = env_get_char(i++); - if (j == sizeof(buf) - 1) { - if (state <= 1) - puts(buf); - j = 0; - } - } while (c != '\0'); + char *res = NULL; + size_t len; + + if (name) { /* print a single name */ + ENTRY e, *ep; + + e.key = name; + e.data = NULL; + ep = hsearch (e, FIND); + if (ep == NULL) + return 0; + len = printf ("%s=%s\n", ep->key, ep->data); + return len; + } - if (state <= 1) { - if (j) - puts(buf); - putc('\n'); - } + /* print whole list */ + len = hexport('\n', &res, 0); - if (ctrlc()) - return -1; + if (len > 0) { + puts(res); + free(res); + return len; } - if (state == 0) - i = 0; - return i; + /* should never happen */ + return 0; } -int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +int do_env_print (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { int i; int rcode = 0; if (argc == 1) { /* print all env vars */ - rcode = printenv(NULL, 1); - if (rcode < 0) + rcode = env_print(NULL); + if (!rcode) return 1; printf("\nEnvironment size: %d/%ld bytes\n", rcode, (ulong)ENV_SIZE); @@ -157,9 +148,9 @@ int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) /* print selected env vars */ for (i = 1; i < argc; ++i) { - char *name = argv[i]; - if (printenv(name, 2)) { - printf("## Error: \"%s\" not defined\n", name); + int rc = env_print(argv[i]); + if (!rc) { + printf("## Error: \"%s\" not defined\n", argv[i]); ++rcode; } } @@ -167,25 +158,18 @@ int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) return rcode; } -/************************************************************************ +/* * Set a new environment variable, * or replace or delete an existing one. - * - * This function will ONLY work with a in-RAM copy of the environment */ -int _do_setenv (int flag, int argc, char * const argv[]) +int _do_env_set (int flag, int argc, char * const argv[]) { - int i, len, oldval; + bd_t *bd = gd->bd; + int i, len; int console = -1; - uchar *env, *nxt = NULL; - char *name; - bd_t *bd = gd->bd; - - uchar *env_data = env_get_addr(0); - - if (!env_data) /* need copy in RAM */ - return 1; + char *name, *value, *s; + ENTRY e, *ep; name = argv[1]; @@ -198,13 +182,9 @@ int _do_setenv (int flag, int argc, char * const argv[]) /* * search if variable with this name already exists */ - oldval = -1; - for (env=env_data; *env; env=nxt+1) { - for (nxt=env; *nxt; ++nxt) - ; - if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0) - break; - } + e.key = name; + e.data = NULL; + ep = hsearch (e, FIND); /* Check for console redirection */ if (strcmp(name,"stdin") == 0) { @@ -238,36 +218,25 @@ int _do_setenv (int flag, int argc, char * const argv[]) } /* - * Delete any existing definition + * Some variables like "ethaddr" and "serial#" can be set only + * once and cannot be deleted; also, "ver" is readonly. */ - if (oldval >= 0) { + if (ep) { /* variable exists */ #ifndef CONFIG_ENV_OVERWRITE - - /* - * Ethernet Address and serial# can be set only once, - * ver is readonly. - */ - if ( -#ifdef CONFIG_HAS_UID - /* Allow serial# forced overwrite with 0xdeaf4add flag */ - ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) || -#else - (strcmp (name, "serial#") == 0) || -#endif + if ((strcmp (name, "serial#") == 0) || ((strcmp (name, "ethaddr") == 0) #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR) - && (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0) + && (strcmp (ep->data,MK_STR(CONFIG_ETHADDR)) != 0) #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */ ) ) { printf ("Can't overwrite \"%s\"\n", name); return 1; } #endif - /* * Switch to new baudrate if new baudrate is supported */ - if (strcmp(argv[1],"baudrate") == 0) { + if (strcmp(name,"baudrate") == 0) { int baudrate = simple_strtoul(argv[2], NULL, 10); int i; for (i=0; i<N_BAUDRATES; ++i) { @@ -294,75 +263,50 @@ int _do_setenv (int flag, int argc, char * const argv[]) break; } } - - if (*++nxt == '\0') { - if (env > env_data) { - env--; - } else { - *env = '\0'; - } - } else { - for (;;) { - *env = *nxt++; - if ((*env == '\0') && (*nxt == '\0')) - break; - ++env; - } - } - *++env = '\0'; } /* Delete only ? */ if ((argc < 3) || argv[2] == NULL) { - env_crc_update (); - return 0; + int rc = hdelete(name); + return !rc; } /* - * Append new definition at the end + * Insert / replace new value */ - for (env=env_data; *env || *(env+1); ++env) - ; - if (env > env_data) - ++env; - /* - * Overflow when: - * "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data) - */ - len = strlen(name) + 2; - /* add '=' for first arg, ' ' for all others */ - for (i=2; i<argc; ++i) { + for (i=2,len=0; i<argc; ++i) { len += strlen(argv[i]) + 1; } - if (len > (&env_data[ENV_SIZE]-env)) { - printf ("## Error: environment overflow, \"%s\" deleted\n", name); + if ((value = malloc(len)) == NULL) { + printf("## Can't malloc %d bytes\n", len); return 1; } - while ((*env = *name++) != '\0') - env++; - for (i=2; i<argc; ++i) { - char *val = argv[i]; + for (i=2,s=value; i<argc; ++i) { + char *v = argv[i]; - *env = (i==2) ? '=' : ' '; - while ((*++env = *val++) != '\0') + while ((*s++ = *v++) != '\0') ; + *(s-1) = ' '; + } + if (s != value) + *--s = '\0'; + + e.key = name; + e.data = value; + ep = hsearch(e, ENTER); + free(value); + if (!ep) { + printf("## Error inserting \"%s\" variable, errno=%d\n", + name, errno); + return 1; } - - /* end is marked with double '\0' */ - *++env = '\0'; - - /* Update CRC */ - env_crc_update (); /* * Some variables should be updated when the corresponding - * entry in the enviornment is changed + * entry in the environment is changed */ - if (strcmp(argv[1],"ethaddr") == 0) - return 0; - - if (strcmp(argv[1],"ipaddr") == 0) { + if (strcmp(name,"ipaddr") == 0) { char *s = argv[2]; /* always use only one arg */ char *e; unsigned long addr; @@ -375,13 +319,12 @@ int _do_setenv (int flag, int argc, char * const argv[]) } bd->bi_ip_addr = htonl(addr); return 0; - } - if (strcmp(argv[1],"loadaddr") == 0) { + } else if (strcmp(argv[1],"loadaddr") == 0) { load_addr = simple_strtoul(argv[2], NULL, 16); return 0; } #if defined(CONFIG_CMD_NET) - if (strcmp(argv[1],"bootfile") == 0) { + else if (strcmp(argv[1],"bootfile") == 0) { copy_filename (BootFile, argv[2], sizeof(BootFile)); return 0; } @@ -393,38 +336,29 @@ int setenv (char *varname, char *varvalue) { char * const argv[4] = { "setenv", varname, varvalue, NULL }; if ((varvalue == NULL) || (varvalue[0] == '\0')) - return _do_setenv (0, 2, argv); + return _do_env_set(0, 2, argv); else - return _do_setenv (0, 3, argv); -} - -#ifdef CONFIG_HAS_UID -void forceenv (char *varname, char *varvalue) -{ - char * const argv[4] = { "forceenv", varname, varvalue, NULL }; - _do_setenv (0xdeaf4add, 3, argv); + return _do_env_set(0, 3, argv); } -#endif -int do_setenv (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +int do_env_set (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { if (argc < 2) return cmd_usage(cmdtp); - return _do_setenv (flag, argc, argv); + return _do_env_set(flag, argc, argv); } -/************************************************************************ +/* * Prompt for environment variable */ - #if defined(CONFIG_CMD_ASKENV) -int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +int do_env_ask ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { extern char console_buffer[CONFIG_SYS_CBSIZE]; char message[CONFIG_SYS_CBSIZE]; int size = CONFIG_SYS_CBSIZE - 1; - int len; + int i, len, pos; char *local_args[4]; local_args[0] = argv[0]; @@ -432,38 +366,30 @@ int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) local_args[2] = NULL; local_args[3] = NULL; - if (argc < 2) - return cmd_usage(cmdtp); - /* Check the syntax */ switch (argc) { case 1: return cmd_usage(cmdtp); - case 2: /* askenv envname */ - sprintf (message, "Please enter '%s':", argv[1]); + case 2: /* env_ask envname */ + sprintf(message, "Please enter '%s':", argv[1]); break; - case 3: /* askenv envname size */ - sprintf (message, "Please enter '%s':", argv[1]); - size = simple_strtoul (argv[2], NULL, 10); + case 3: /* env_ask envname size */ + sprintf(message, "Please enter '%s':", argv[1]); + size = simple_strtoul(argv[2], NULL, 10); break; - default: /* askenv envname message1 ... messagen size */ - { - int i; - int pos = 0; - - for (i = 2; i < argc - 1; i++) { + 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]); + strcpy(message+pos, argv[i]); pos += strlen(argv[i]); } message[pos] = '\0'; - size = simple_strtoul (argv[argc - 1], NULL, 10); - } + size = simple_strtoul(argv[argc - 1], NULL, 10); break; } @@ -474,7 +400,7 @@ int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) return 1; /* prompt for input */ - len = readline (message); + len = readline(message); if (size < len) console_buffer[size] = '\0'; @@ -486,15 +412,15 @@ int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) } /* Continue calling setenv code */ - return _do_setenv (flag, len, local_args); + return _do_env_set(flag, len, local_args); } #endif -/************************************************************************ +/* * Interactively edit an environment variable */ #if defined(CONFIG_CMD_EDITENV) -int do_editenv(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { char buffer[CONFIG_SYS_CBSIZE]; char *init_val; @@ -516,35 +442,37 @@ int do_editenv(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) } #endif /* CONFIG_CMD_EDITENV */ -/************************************************************************ +/* * Look up variable from environment, * return address of storage for that variable, * or NULL if not found */ - char *getenv (char *name) { - int i, nxt; + if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */ + ENTRY e, *ep; - WATCHDOG_RESET(); + WATCHDOG_RESET(); - for (i=0; env_get_char(i) != '\0'; i=nxt+1) { - int val; + e.key = name; + e.data = NULL; + ep = hsearch (e, FIND); - for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { - if (nxt >= CONFIG_ENV_SIZE) { - return (NULL); - } - } - if ((val=envmatch((uchar *)name, i)) < 0) - continue; - return ((char *)env_get_addr(val)); + return (ep ? ep->data : NULL); } - return (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; } -int getenv_f(char *name, char *buf, unsigned len) +/* + * Look up variable from environment for restricted C runtime env. + */ +int getenv_f (char *name, char *buf, unsigned len) { int i, nxt; @@ -577,7 +505,7 @@ int getenv_f(char *name, char *buf, unsigned len) #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) -int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +int do_env_save (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { extern char * env_name_spec; @@ -587,7 +515,7 @@ int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) } U_BOOT_CMD( - saveenv, 1, 0, do_saveenv, + saveenv, 1, 0, do_env_save, "save environment variables to persistent storage", "" ); @@ -595,7 +523,7 @@ U_BOOT_CMD( #endif -/************************************************************************ +/* * Match a name / name=value pair * * s1 is either a simple 'name', or a 'name=value' pair. @@ -614,12 +542,345 @@ int envmatch (uchar *s1, int i2) return(-1); } +static int do_env_default(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + if ((argc != 2) || (strcmp(argv[1], "-f") != 0)) { + cmd_usage(cmdtp); + return 1; + } + set_default_env("## Resetting to default environment\n"); + return 0; +} + +static int do_env_delete(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + printf("Not implemented yet\n"); + return 0; +} -/**************************************************/ +/* + * env export [-t | -b | -c] addr [size] + * -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 + * addr: memory address where environment gets stored + * size: size of output buffer + * + * 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; + 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 't': /* text format */ + if (fmt++) + goto sep_err; + sep = '\n'; + break; + default: + cmd_usage(cmdtp); + return 1; + } + } + } + + if (argc < 1) { + cmd_usage(cmdtp); + return 1; + } + + addr = (char *)simple_strtoul(argv[0], NULL, 16); + + if (argc == 2) { + size = simple_strtoul(argv[1], NULL, 16); + memset(addr, '\0', size); + } else { + size = 0; + } + + if (sep) { /* export as text file */ + len = hexport(sep, &addr, size); + if (len < 0) { + error("Cannot export environment: errno = %d\n", + errno); + return 1; + } + sprintf(buf, "%zX", 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('\0', &res, ENV_SIZE); + 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", 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; +} + +/* + * 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: + cmd_usage(cmdtp); + return 1; + } + } + } + + if (argc < 1) { + cmd_usage(cmdtp); + return 1; + } + + 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; + printf("## Info: input data size = %zd = 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(addr, size, sep, del ? 0 : H_NOCLEAR) == 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; +} + +#if defined(CONFIG_CMD_RUN) +extern int do_run (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]); +#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 + U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""), + U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""), + 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, "", ""), +}; + +static int do_env (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + cmd_tbl_t *cp; + + /* 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); + + cmd_usage(cmdtp); + return 1; +} + +U_BOOT_CMD( + env, CONFIG_SYS_MAXARGS, 1, do_env, + "environment handling commands", +#if defined(CONFIG_CMD_ASKENV) + "ask name [message] [size] - ask for environment variable\nenv " +#endif + "default -f - reset default environment\n" +#if defined(CONFIG_CMD_EDITENV) + "env edit name - edit environment variable\n" +#endif + "env export [-t | -b | -c] addr [size] - export environmnt\n" + "env import [-d] [-t | -b | -c] addr [size] - import environmnt\n" + "env print [name ...] - print environment\n" +#if defined(CONFIG_CMD_RUN) + "env run var [...] - run commands in an environment variable\n" +#endif + "env save - save environment\n" + "env set [-f] name [arg ...]\n" +); + +/* + * Old command line interface, kept for compatibility + */ #if defined(CONFIG_CMD_EDITENV) U_BOOT_CMD( - editenv, 2, 0, do_editenv, + editenv, 2, 0, do_env_edit, "edit environment variable", "name\n" " - edit environment variable 'name'" @@ -627,7 +888,7 @@ U_BOOT_CMD( #endif U_BOOT_CMD( - printenv, CONFIG_SYS_MAXARGS, 1, do_printenv, + printenv, CONFIG_SYS_MAXARGS, 1, do_env_print, "print environment variables", "\n - print values of all environment variables\n" "printenv name ...\n" @@ -635,7 +896,7 @@ U_BOOT_CMD( ); U_BOOT_CMD( - setenv, CONFIG_SYS_MAXARGS, 0, do_setenv, + setenv, CONFIG_SYS_MAXARGS, 0, do_env_set, "set environment variables", "name value ...\n" " - set environment variable 'name' to 'value ...'\n" @@ -646,7 +907,7 @@ U_BOOT_CMD( #if defined(CONFIG_CMD_ASKENV) U_BOOT_CMD( - askenv, CONFIG_SYS_MAXARGS, 1, do_askenv, + 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" @@ -661,7 +922,6 @@ U_BOOT_CMD( #endif #if defined(CONFIG_CMD_RUN) -int do_run (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]); U_BOOT_CMD( run, CONFIG_SYS_MAXARGS, 1, do_run, "run commands in an environment variable", |