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git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_nvedit.c
2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
6 * Andreas Heppel <aheppel@sysgo.de>
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 /**************************************************************************
29 * Support for persistent environment data
31 * The "environment" is stored as a list of '\0' terminated
32 * "name=value" strings. The end of the list is marked by a double
33 * '\0'. New entries are always added at the end. Deleting an entry
34 * shifts the remaining entries to the front. Replacing an entry is a
35 * combination of deleting the old value and adding the new one.
37 * The environment is preceeded by a 32 bit CRC over the data part.
39 **************************************************************************
44 #include <environment.h>
47 #include <linux/stddef.h>
48 #include <asm/byteorder.h>
49 #if defined(CONFIG_CMD_NET)
53 DECLARE_GLOBAL_DATA_PTR
;
55 #if !defined(CFG_ENV_IS_IN_NVRAM) && \
56 !defined(CFG_ENV_IS_IN_EEPROM) && \
57 !defined(CFG_ENV_IS_IN_FLASH) && \
58 !defined(CFG_ENV_IS_IN_DATAFLASH) && \
59 !defined(CFG_ENV_IS_IN_NAND) && \
60 !defined(CFG_ENV_IS_IN_ONENAND) && \
61 !defined(CFG_ENV_IS_IN_SPI_FLASH) && \
62 !defined(CFG_ENV_IS_NOWHERE)
63 # error Define one of CFG_ENV_IS_IN_{NVRAM|EEPROM|FLASH|DATAFLASH|ONENAND|SPI_FLASH|NOWHERE}
67 #define MK_STR(x) XMK_STR(x)
69 /************************************************************************
70 ************************************************************************/
73 * Table with supported baudrates (defined in config_xyz.h)
75 static const unsigned long baudrate_table
[] = CFG_BAUDRATE_TABLE
;
76 #define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
79 /************************************************************************
80 * Command interface: print one or all environment variables
83 int do_printenv (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
88 if (argc
== 1) { /* Print all env variables */
89 for (i
=0; env_get_char(i
) != '\0'; i
=nxt
+1) {
90 for (nxt
=i
; env_get_char(nxt
) != '\0'; ++nxt
)
93 putc(env_get_char(k
));
97 puts ("\n ** Abort\n");
102 printf("\nEnvironment size: %d/%d bytes\n", i
, ENV_SIZE
);
107 for (i
=1; i
<argc
; ++i
) { /* print single env variables */
108 char *name
= argv
[i
];
112 for (j
=0; env_get_char(j
) != '\0'; j
=nxt
+1) {
114 for (nxt
=j
; env_get_char(nxt
) != '\0'; ++nxt
)
116 k
= envmatch((uchar
*)name
, j
);
123 putc(env_get_char(k
++));
128 printf ("## Error: \"%s\" not defined\n", name
);
135 /************************************************************************
136 * Set a new environment variable,
137 * or replace or delete an existing one.
139 * This function will ONLY work with a in-RAM copy of the environment
142 int _do_setenv (int flag
, int argc
, char *argv
[])
146 uchar
*env
, *nxt
= NULL
;
150 uchar
*env_data
= env_get_addr(0);
152 if (!env_data
) /* need copy in RAM */
157 if (strchr(name
, '=')) {
158 printf ("## Error: illegal character '=' in variable name \"%s\"\n", name
);
163 * search if variable with this name already exists
166 for (env
=env_data
; *env
; env
=nxt
+1) {
167 for (nxt
=env
; *nxt
; ++nxt
)
169 if ((oldval
= envmatch((uchar
*)name
, env
-env_data
)) >= 0)
174 * Delete any existing definition
177 #ifndef CONFIG_ENV_OVERWRITE
180 * Ethernet Address and serial# can be set only once,
184 #ifdef CONFIG_HAS_UID
185 /* Allow serial# forced overwrite with 0xdeaf4add flag */
186 ((strcmp (name
, "serial#") == 0) && (flag
!= 0xdeaf4add)) ||
188 (strcmp (name
, "serial#") == 0) ||
190 ((strcmp (name
, "ethaddr") == 0)
191 #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
192 && (strcmp ((char *)env_get_addr(oldval
),MK_STR(CONFIG_ETHADDR
)) != 0)
193 #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
195 printf ("Can't overwrite \"%s\"\n", name
);
200 /* Check for console redirection */
201 if (strcmp(name
,"stdin") == 0) {
203 } else if (strcmp(name
,"stdout") == 0) {
205 } else if (strcmp(name
,"stderr") == 0) {
210 if (argc
< 3) { /* Cannot delete it! */
211 printf("Can't delete \"%s\"\n", name
);
215 /* Try assigning specified device */
216 if (console_assign (console
, argv
[2]) < 0)
219 #ifdef CONFIG_SERIAL_MULTI
220 if (serial_assign (argv
[2]) < 0)
226 * Switch to new baudrate if new baudrate is supported
228 if (strcmp(argv
[1],"baudrate") == 0) {
229 int baudrate
= simple_strtoul(argv
[2], NULL
, 10);
231 for (i
=0; i
<N_BAUDRATES
; ++i
) {
232 if (baudrate
== baudrate_table
[i
])
235 if (i
== N_BAUDRATES
) {
236 printf ("## Baudrate %d bps not supported\n",
240 printf ("## Switch baudrate to %d bps and press ENTER ...\n",
243 gd
->baudrate
= baudrate
;
244 #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2)
245 gd
->bd
->bi_baudrate
= baudrate
;
256 if (*++nxt
== '\0') {
257 if (env
> env_data
) {
265 if ((*env
== '\0') && (*nxt
== '\0'))
273 #ifdef CONFIG_NET_MULTI
274 if (strncmp(name
, "eth", 3) == 0) {
276 int num
= simple_strtoul(name
+3, &end
, 10);
278 if (strcmp(end
, "addr") == 0) {
279 eth_set_enetaddr(num
, argv
[2]);
286 if ((argc
< 3) || argv
[2] == NULL
) {
292 * Append new definition at the end
294 for (env
=env_data
; *env
|| *(env
+1); ++env
)
300 * "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data)
302 len
= strlen(name
) + 2;
303 /* add '=' for first arg, ' ' for all others */
304 for (i
=2; i
<argc
; ++i
) {
305 len
+= strlen(argv
[i
]) + 1;
307 if (len
> (&env_data
[ENV_SIZE
]-env
)) {
308 printf ("## Error: environment overflow, \"%s\" deleted\n", name
);
311 while ((*env
= *name
++) != '\0')
313 for (i
=2; i
<argc
; ++i
) {
316 *env
= (i
==2) ? '=' : ' ';
317 while ((*++env
= *val
++) != '\0')
321 /* end is marked with double '\0' */
328 * Some variables should be updated when the corresponding
329 * entry in the enviornment is changed
332 if (strcmp(argv
[1],"ethaddr") == 0) {
333 char *s
= argv
[2]; /* always use only one arg */
335 for (i
=0; i
<6; ++i
) {
336 bd
->bi_enetaddr
[i
] = s
? simple_strtoul(s
, &e
, 16) : 0;
337 if (s
) s
= (*e
) ? e
+1 : e
;
339 #ifdef CONFIG_NET_MULTI
340 eth_set_enetaddr(0, argv
[2]);
345 if (strcmp(argv
[1],"ipaddr") == 0) {
346 char *s
= argv
[2]; /* always use only one arg */
350 for (addr
=0, i
=0; i
<4; ++i
) {
351 ulong val
= s
? simple_strtoul(s
, &e
, 10) : 0;
353 addr
|= (val
& 0xFF);
354 if (s
) s
= (*e
) ? e
+1 : e
;
356 bd
->bi_ip_addr
= htonl(addr
);
359 if (strcmp(argv
[1],"loadaddr") == 0) {
360 load_addr
= simple_strtoul(argv
[2], NULL
, 16);
363 #if defined(CONFIG_CMD_NET)
364 if (strcmp(argv
[1],"bootfile") == 0) {
365 copy_filename (BootFile
, argv
[2], sizeof(BootFile
));
370 #ifdef CONFIG_AMIGAONEG3SE
371 if (strcmp(argv
[1], "vga_fg_color") == 0 ||
372 strcmp(argv
[1], "vga_bg_color") == 0 ) {
373 extern void video_set_color(unsigned char attr
);
374 extern unsigned char video_get_attr(void);
376 video_set_color(video_get_attr());
379 #endif /* CONFIG_AMIGAONEG3SE */
384 int setenv (char *varname
, char *varvalue
)
386 char *argv
[4] = { "setenv", varname
, varvalue
, NULL
};
387 if (varvalue
== NULL
)
388 return _do_setenv (0, 2, argv
);
390 return _do_setenv (0, 3, argv
);
393 #ifdef CONFIG_HAS_UID
394 void forceenv (char *varname
, char *varvalue
)
396 char *argv
[4] = { "forceenv", varname
, varvalue
, NULL
};
397 _do_setenv (0xdeaf4add, 3, argv
);
401 int do_setenv (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
404 printf ("Usage:\n%s\n", cmdtp
->usage
);
408 return _do_setenv (flag
, argc
, argv
);
411 /************************************************************************
412 * Prompt for environment variable
415 #if defined(CONFIG_CMD_ASKENV)
416 int do_askenv ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
418 extern char console_buffer
[CFG_CBSIZE
];
419 char message
[CFG_CBSIZE
];
420 int size
= CFG_CBSIZE
- 1;
424 local_args
[0] = argv
[0];
425 local_args
[1] = argv
[1];
426 local_args
[2] = NULL
;
427 local_args
[3] = NULL
;
430 printf ("Usage:\n%s\n", cmdtp
->usage
);
433 /* Check the syntax */
436 printf ("Usage:\n%s\n", cmdtp
->usage
);
439 case 2: /* askenv envname */
440 sprintf (message
, "Please enter '%s':", argv
[1]);
443 case 3: /* askenv envname size */
444 sprintf (message
, "Please enter '%s':", argv
[1]);
445 size
= simple_strtoul (argv
[2], NULL
, 10);
448 default: /* askenv envname message1 ... messagen size */
453 for (i
= 2; i
< argc
- 1; i
++) {
455 message
[pos
++] = ' ';
457 strcpy (message
+pos
, argv
[i
]);
458 pos
+= strlen(argv
[i
]);
461 size
= simple_strtoul (argv
[argc
- 1], NULL
, 10);
466 if (size
>= CFG_CBSIZE
)
467 size
= CFG_CBSIZE
- 1;
472 /* prompt for input */
473 len
= readline (message
);
476 console_buffer
[size
] = '\0';
479 if (console_buffer
[0] != '\0') {
480 local_args
[2] = console_buffer
;
484 /* Continue calling setenv code */
485 return _do_setenv (flag
, len
, local_args
);
489 /************************************************************************
490 * Look up variable from environment,
491 * return address of storage for that variable,
492 * or NULL if not found
495 char *getenv (char *name
)
501 for (i
=0; env_get_char(i
) != '\0'; i
=nxt
+1) {
504 for (nxt
=i
; env_get_char(nxt
) != '\0'; ++nxt
) {
505 if (nxt
>= CFG_ENV_SIZE
) {
509 if ((val
=envmatch((uchar
*)name
, i
)) < 0)
511 return ((char *)env_get_addr(val
));
517 int getenv_r (char *name
, char *buf
, unsigned len
)
521 for (i
=0; env_get_char(i
) != '\0'; i
=nxt
+1) {
524 for (nxt
=i
; env_get_char(nxt
) != '\0'; ++nxt
) {
525 if (nxt
>= CFG_ENV_SIZE
) {
529 if ((val
=envmatch((uchar
*)name
, i
)) < 0)
531 /* found; copy out */
533 while ((len
> n
++) && (*buf
++ = env_get_char(val
++)) != '\0')
542 #if ((defined(CFG_ENV_IS_IN_NVRAM) || defined(CFG_ENV_IS_IN_EEPROM) \
543 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
544 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
545 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))) \
546 && !defined(CFG_ENV_IS_NOWHERE))
547 int do_saveenv (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
549 extern char * env_name_spec
;
551 printf ("Saving Environment to %s...\n", env_name_spec
);
553 return (saveenv() ? 1 : 0);
559 /************************************************************************
560 * Match a name / name=value pair
562 * s1 is either a simple 'name', or a 'name=value' pair.
563 * i2 is the environment index for a 'name2=value2' pair.
564 * If the names match, return the index for the value2, else NULL.
567 int envmatch (uchar
*s1
, int i2
)
570 while (*s1
== env_get_char(i2
++))
573 if (*s1
== '\0' && env_get_char(i2
-1) == '=')
579 /**************************************************/
582 printenv
, CFG_MAXARGS
, 1, do_printenv
,
583 "printenv- print environment variables\n",
584 "\n - print values of all environment variables\n"
585 "printenv name ...\n"
586 " - print value of environment variable 'name'\n"
590 setenv
, CFG_MAXARGS
, 0, do_setenv
,
591 "setenv - set environment variables\n",
593 " - set environment variable 'name' to 'value ...'\n"
595 " - delete environment variable 'name'\n"
598 #if ((defined(CFG_ENV_IS_IN_NVRAM) || defined(CFG_ENV_IS_IN_EEPROM) \
599 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
600 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
601 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))) \
602 && !defined(CFG_ENV_IS_NOWHERE))
604 saveenv
, 1, 0, do_saveenv
,
605 "saveenv - save environment variables to persistent storage\n",
611 #if defined(CONFIG_CMD_ASKENV)
614 askenv
, CFG_MAXARGS
, 1, do_askenv
,
615 "askenv - get environment variables from stdin\n",
616 "name [message] [size]\n"
617 " - get environment variable 'name' from stdin (max 'size' chars)\n"
619 " - get environment variable 'name' from stdin\n"
621 " - get environment variable 'name' from stdin (max 'size' chars)\n"
622 "askenv name [message] size\n"
623 " - display 'message' string and get environment variable 'name'"
624 "from stdin (max 'size' chars)\n"
628 #if defined(CONFIG_CMD_RUN)
629 int do_run (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[]);
631 run
, CFG_MAXARGS
, 1, do_run
,
632 "run - run commands in an environment variable\n",
634 " - run the commands in the environment variable(s) 'var'\n"