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git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_nvedit.c
dc6d13af1ce62f1558d00e9bd5660a4fd5722294
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(CONFIG_ENV_IS_IN_EEPROM) && \
57 !defined(CFG_ENV_IS_IN_FLASH) && \
58 !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \
59 !defined(CONFIG_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/%ld bytes\n",
108 for (i
=1; i
<argc
; ++i
) { /* print single env variables */
109 char *name
= argv
[i
];
113 for (j
=0; env_get_char(j
) != '\0'; j
=nxt
+1) {
115 for (nxt
=j
; env_get_char(nxt
) != '\0'; ++nxt
)
117 k
= envmatch((uchar
*)name
, j
);
124 putc(env_get_char(k
++));
129 printf ("## Error: \"%s\" not defined\n", name
);
136 /************************************************************************
137 * Set a new environment variable,
138 * or replace or delete an existing one.
140 * This function will ONLY work with a in-RAM copy of the environment
143 int _do_setenv (int flag
, int argc
, char *argv
[])
147 uchar
*env
, *nxt
= NULL
;
151 uchar
*env_data
= env_get_addr(0);
153 if (!env_data
) /* need copy in RAM */
158 if (strchr(name
, '=')) {
159 printf ("## Error: illegal character '=' in variable name \"%s\"\n", name
);
164 * search if variable with this name already exists
167 for (env
=env_data
; *env
; env
=nxt
+1) {
168 for (nxt
=env
; *nxt
; ++nxt
)
170 if ((oldval
= envmatch((uchar
*)name
, env
-env_data
)) >= 0)
175 * Delete any existing definition
178 #ifndef CONFIG_ENV_OVERWRITE
181 * Ethernet Address and serial# can be set only once,
185 #ifdef CONFIG_HAS_UID
186 /* Allow serial# forced overwrite with 0xdeaf4add flag */
187 ((strcmp (name
, "serial#") == 0) && (flag
!= 0xdeaf4add)) ||
189 (strcmp (name
, "serial#") == 0) ||
191 ((strcmp (name
, "ethaddr") == 0)
192 #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
193 && (strcmp ((char *)env_get_addr(oldval
),MK_STR(CONFIG_ETHADDR
)) != 0)
194 #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
196 printf ("Can't overwrite \"%s\"\n", name
);
201 /* Check for console redirection */
202 if (strcmp(name
,"stdin") == 0) {
204 } else if (strcmp(name
,"stdout") == 0) {
206 } else if (strcmp(name
,"stderr") == 0) {
211 if (argc
< 3) { /* Cannot delete it! */
212 printf("Can't delete \"%s\"\n", name
);
216 /* Try assigning specified device */
217 if (console_assign (console
, argv
[2]) < 0)
220 #ifdef CONFIG_SERIAL_MULTI
221 if (serial_assign (argv
[2]) < 0)
227 * Switch to new baudrate if new baudrate is supported
229 if (strcmp(argv
[1],"baudrate") == 0) {
230 int baudrate
= simple_strtoul(argv
[2], NULL
, 10);
232 for (i
=0; i
<N_BAUDRATES
; ++i
) {
233 if (baudrate
== baudrate_table
[i
])
236 if (i
== N_BAUDRATES
) {
237 printf ("## Baudrate %d bps not supported\n",
241 printf ("## Switch baudrate to %d bps and press ENTER ...\n",
244 gd
->baudrate
= baudrate
;
245 #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2)
246 gd
->bd
->bi_baudrate
= baudrate
;
257 if (*++nxt
== '\0') {
258 if (env
> env_data
) {
266 if ((*env
== '\0') && (*nxt
== '\0'))
274 #ifdef CONFIG_NET_MULTI
275 if (strncmp(name
, "eth", 3) == 0) {
277 int num
= simple_strtoul(name
+3, &end
, 10);
279 if (strcmp(end
, "addr") == 0) {
280 eth_set_enetaddr(num
, argv
[2]);
287 if ((argc
< 3) || argv
[2] == NULL
) {
293 * Append new definition at the end
295 for (env
=env_data
; *env
|| *(env
+1); ++env
)
301 * "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data)
303 len
= strlen(name
) + 2;
304 /* add '=' for first arg, ' ' for all others */
305 for (i
=2; i
<argc
; ++i
) {
306 len
+= strlen(argv
[i
]) + 1;
308 if (len
> (&env_data
[ENV_SIZE
]-env
)) {
309 printf ("## Error: environment overflow, \"%s\" deleted\n", name
);
312 while ((*env
= *name
++) != '\0')
314 for (i
=2; i
<argc
; ++i
) {
317 *env
= (i
==2) ? '=' : ' ';
318 while ((*++env
= *val
++) != '\0')
322 /* end is marked with double '\0' */
329 * Some variables should be updated when the corresponding
330 * entry in the enviornment is changed
333 if (strcmp(argv
[1],"ethaddr") == 0) {
334 char *s
= argv
[2]; /* always use only one arg */
336 for (i
=0; i
<6; ++i
) {
337 bd
->bi_enetaddr
[i
] = s
? simple_strtoul(s
, &e
, 16) : 0;
338 if (s
) s
= (*e
) ? e
+1 : e
;
340 #ifdef CONFIG_NET_MULTI
341 eth_set_enetaddr(0, argv
[2]);
346 if (strcmp(argv
[1],"ipaddr") == 0) {
347 char *s
= argv
[2]; /* always use only one arg */
351 for (addr
=0, i
=0; i
<4; ++i
) {
352 ulong val
= s
? simple_strtoul(s
, &e
, 10) : 0;
354 addr
|= (val
& 0xFF);
355 if (s
) s
= (*e
) ? e
+1 : e
;
357 bd
->bi_ip_addr
= htonl(addr
);
360 if (strcmp(argv
[1],"loadaddr") == 0) {
361 load_addr
= simple_strtoul(argv
[2], NULL
, 16);
364 #if defined(CONFIG_CMD_NET)
365 if (strcmp(argv
[1],"bootfile") == 0) {
366 copy_filename (BootFile
, argv
[2], sizeof(BootFile
));
371 #ifdef CONFIG_AMIGAONEG3SE
372 if (strcmp(argv
[1], "vga_fg_color") == 0 ||
373 strcmp(argv
[1], "vga_bg_color") == 0 ) {
374 extern void video_set_color(unsigned char attr
);
375 extern unsigned char video_get_attr(void);
377 video_set_color(video_get_attr());
380 #endif /* CONFIG_AMIGAONEG3SE */
385 int setenv (char *varname
, char *varvalue
)
387 char *argv
[4] = { "setenv", varname
, varvalue
, NULL
};
388 if (varvalue
== NULL
)
389 return _do_setenv (0, 2, argv
);
391 return _do_setenv (0, 3, argv
);
394 #ifdef CONFIG_HAS_UID
395 void forceenv (char *varname
, char *varvalue
)
397 char *argv
[4] = { "forceenv", varname
, varvalue
, NULL
};
398 _do_setenv (0xdeaf4add, 3, argv
);
402 int do_setenv (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
405 printf ("Usage:\n%s\n", cmdtp
->usage
);
409 return _do_setenv (flag
, argc
, argv
);
412 /************************************************************************
413 * Prompt for environment variable
416 #if defined(CONFIG_CMD_ASKENV)
417 int do_askenv ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
419 extern char console_buffer
[CFG_CBSIZE
];
420 char message
[CFG_CBSIZE
];
421 int size
= CFG_CBSIZE
- 1;
425 local_args
[0] = argv
[0];
426 local_args
[1] = argv
[1];
427 local_args
[2] = NULL
;
428 local_args
[3] = NULL
;
431 printf ("Usage:\n%s\n", cmdtp
->usage
);
434 /* Check the syntax */
437 printf ("Usage:\n%s\n", cmdtp
->usage
);
440 case 2: /* askenv envname */
441 sprintf (message
, "Please enter '%s':", argv
[1]);
444 case 3: /* askenv envname size */
445 sprintf (message
, "Please enter '%s':", argv
[1]);
446 size
= simple_strtoul (argv
[2], NULL
, 10);
449 default: /* askenv envname message1 ... messagen size */
454 for (i
= 2; i
< argc
- 1; i
++) {
456 message
[pos
++] = ' ';
458 strcpy (message
+pos
, argv
[i
]);
459 pos
+= strlen(argv
[i
]);
462 size
= simple_strtoul (argv
[argc
- 1], NULL
, 10);
467 if (size
>= CFG_CBSIZE
)
468 size
= CFG_CBSIZE
- 1;
473 /* prompt for input */
474 len
= readline (message
);
477 console_buffer
[size
] = '\0';
480 if (console_buffer
[0] != '\0') {
481 local_args
[2] = console_buffer
;
485 /* Continue calling setenv code */
486 return _do_setenv (flag
, len
, local_args
);
490 /************************************************************************
491 * Look up variable from environment,
492 * return address of storage for that variable,
493 * or NULL if not found
496 char *getenv (char *name
)
502 for (i
=0; env_get_char(i
) != '\0'; i
=nxt
+1) {
505 for (nxt
=i
; env_get_char(nxt
) != '\0'; ++nxt
) {
506 if (nxt
>= CFG_ENV_SIZE
) {
510 if ((val
=envmatch((uchar
*)name
, i
)) < 0)
512 return ((char *)env_get_addr(val
));
518 int getenv_r (char *name
, char *buf
, unsigned len
)
522 for (i
=0; env_get_char(i
) != '\0'; i
=nxt
+1) {
525 for (nxt
=i
; env_get_char(nxt
) != '\0'; ++nxt
) {
526 if (nxt
>= CFG_ENV_SIZE
) {
530 if ((val
=envmatch((uchar
*)name
, i
)) < 0)
532 /* found; copy out */
534 while ((len
> n
++) && (*buf
++ = env_get_char(val
++)) != '\0')
543 #if ((defined(CFG_ENV_IS_IN_NVRAM) || defined(CONFIG_ENV_IS_IN_EEPROM) \
544 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
545 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
546 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))) \
547 && !defined(CFG_ENV_IS_NOWHERE))
548 int do_saveenv (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
550 extern char * env_name_spec
;
552 printf ("Saving Environment to %s...\n", env_name_spec
);
554 return (saveenv() ? 1 : 0);
560 /************************************************************************
561 * Match a name / name=value pair
563 * s1 is either a simple 'name', or a 'name=value' pair.
564 * i2 is the environment index for a 'name2=value2' pair.
565 * If the names match, return the index for the value2, else NULL.
568 int envmatch (uchar
*s1
, int i2
)
571 while (*s1
== env_get_char(i2
++))
574 if (*s1
== '\0' && env_get_char(i2
-1) == '=')
580 /**************************************************/
583 printenv
, CFG_MAXARGS
, 1, do_printenv
,
584 "printenv- print environment variables\n",
585 "\n - print values of all environment variables\n"
586 "printenv name ...\n"
587 " - print value of environment variable 'name'\n"
591 setenv
, CFG_MAXARGS
, 0, do_setenv
,
592 "setenv - set environment variables\n",
594 " - set environment variable 'name' to 'value ...'\n"
596 " - delete environment variable 'name'\n"
599 #if ((defined(CFG_ENV_IS_IN_NVRAM) || defined(CONFIG_ENV_IS_IN_EEPROM) \
600 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
601 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
602 || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))) \
603 && !defined(CFG_ENV_IS_NOWHERE))
605 saveenv
, 1, 0, do_saveenv
,
606 "saveenv - save environment variables to persistent storage\n",
612 #if defined(CONFIG_CMD_ASKENV)
615 askenv
, CFG_MAXARGS
, 1, do_askenv
,
616 "askenv - get environment variables from stdin\n",
617 "name [message] [size]\n"
618 " - get environment variable 'name' from stdin (max 'size' chars)\n"
620 " - get environment variable 'name' from stdin\n"
622 " - get environment variable 'name' from stdin (max 'size' chars)\n"
623 "askenv name [message] size\n"
624 " - display 'message' string and get environment variable 'name'"
625 "from stdin (max 'size' chars)\n"
629 #if defined(CONFIG_CMD_RUN)
630 int do_run (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[]);
632 run
, CFG_MAXARGS
, 1, do_run
,
633 "run - run commands in an environment variable\n",
635 " - run the commands in the environment variable(s) 'var'\n"