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wdenka68d3ed2002-10-11 08:38:32 +00001/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +02002 * (C) Copyright 2000-2010
wdenka68d3ed2002-10-11 08:38:32 +00003 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
6 * Andreas Heppel <aheppel@sysgo.de>
Kim Phillipsa000b792011-04-05 07:15:14 +00007 *
8 * Copyright 2011 Freescale Semiconductor, Inc.
9 *
wdenka68d3ed2002-10-11 08:38:32 +000010 * See file CREDITS for list of people who contributed to this
11 * project.
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 * MA 02111-1307 USA
27 */
28
Wolfgang Denkea882ba2010-06-20 23:33:59 +020029/*
wdenka68d3ed2002-10-11 08:38:32 +000030 * Support for persistent environment data
31 *
Wolfgang Denkea882ba2010-06-20 23:33:59 +020032 * The "environment" is stored on external storage as a list of '\0'
33 * terminated "name=value" strings. The end of the list is marked by
34 * a double '\0'. The environment is preceeded by a 32 bit CRC over
35 * the data part and, in case of redundant environment, a byte of
36 * flags.
wdenka68d3ed2002-10-11 08:38:32 +000037 *
Wolfgang Denkea882ba2010-06-20 23:33:59 +020038 * This linearized representation will also be used before
39 * relocation, i. e. as long as we don't have a full C runtime
40 * environment. After that, we use a hash table.
wdenka68d3ed2002-10-11 08:38:32 +000041 */
42
43#include <common.h>
44#include <command.h>
45#include <environment.h>
Wolfgang Denkea882ba2010-06-20 23:33:59 +020046#include <search.h>
47#include <errno.h>
Peter Tyser246c6922009-10-25 15:12:56 -050048#include <malloc.h>
wdenk2a3cb022002-11-05 21:01:48 +000049#include <watchdog.h>
wdenk281e00a2004-08-01 22:48:16 +000050#include <serial.h>
wdenka68d3ed2002-10-11 08:38:32 +000051#include <linux/stddef.h>
52#include <asm/byteorder.h>
Jon Loeligerc76fe472007-07-08 18:02:23 -050053#if defined(CONFIG_CMD_NET)
wdenka68d3ed2002-10-11 08:38:32 +000054#include <net.h>
55#endif
56
Wolfgang Denkd87080b2006-03-31 18:32:53 +020057DECLARE_GLOBAL_DATA_PTR;
58
Macpaul Linf3c615b2011-04-26 16:16:45 +000059#if !defined(CONFIG_ENV_IS_IN_EEPROM) && \
60 !defined(CONFIG_ENV_IS_IN_FLASH) && \
61 !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \
62 !defined(CONFIG_ENV_IS_IN_MG_DISK) && \
63 !defined(CONFIG_ENV_IS_IN_MMC) && \
64 !defined(CONFIG_ENV_IS_IN_NAND) && \
65 !defined(CONFIG_ENV_IS_IN_NVRAM) && \
66 !defined(CONFIG_ENV_IS_IN_ONENAND) && \
67 !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \
68 !defined(CONFIG_ENV_IS_NOWHERE)
unsik Kim75eb82e2009-02-25 11:31:24 +090069# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\
Loïc Minier31e41392011-03-24 17:21:42 +010070SPI_FLASH|MG_DISK|NVRAM|MMC} or CONFIG_ENV_IS_NOWHERE
wdenka68d3ed2002-10-11 08:38:32 +000071#endif
72
73#define XMK_STR(x) #x
74#define MK_STR(x) XMK_STR(x)
75
Wolfgang Denkea882ba2010-06-20 23:33:59 +020076/*
77 * Maximum expected input data size for import command
78 */
79#define MAX_ENV_SIZE (1 << 20) /* 1 MiB */
wdenka68d3ed2002-10-11 08:38:32 +000080
Mike Frysinger558605c2010-12-21 14:08:27 -050081ulong load_addr = CONFIG_SYS_LOAD_ADDR; /* Default Load Address */
82
wdenka68d3ed2002-10-11 08:38:32 +000083/*
84 * Table with supported baudrates (defined in config_xyz.h)
85 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020086static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE;
wdenka68d3ed2002-10-11 08:38:32 +000087#define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
88
Heiko Schocherda954272009-04-28 08:36:11 +020089/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +020090 * This variable is incremented on each do_env_set(), so it can
Heiko Schocherda954272009-04-28 08:36:11 +020091 * be used via get_env_id() as an indication, if the environment
92 * has changed or not. So it is possible to reread an environment
93 * variable only if the environment was changed ... done so for
94 * example in NetInitLoop()
95 */
Heiko Schocher2f70c492009-02-10 09:38:52 +010096static int env_id = 1;
wdenka68d3ed2002-10-11 08:38:32 +000097
Macpaul Linf3c615b2011-04-26 16:16:45 +000098int get_env_id(void)
Heiko Schocher2f70c492009-02-10 09:38:52 +010099{
100 return env_id;
101}
wdenka68d3ed2002-10-11 08:38:32 +0000102
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400103/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200104 * Command interface: print one or all environment variables
105 *
106 * Returns 0 in case of error, or length of printed string
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400107 */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200108static int env_print(char *name)
wdenka68d3ed2002-10-11 08:38:32 +0000109{
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200110 char *res = NULL;
111 size_t len;
wdenka68d3ed2002-10-11 08:38:32 +0000112
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200113 if (name) { /* print a single name */
114 ENTRY e, *ep;
wdenka68d3ed2002-10-11 08:38:32 +0000115
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200116 e.key = name;
117 e.data = NULL;
Mike Frysinger2eb15732010-12-08 06:26:04 -0500118 hsearch_r(e, FIND, &ep, &env_htab);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200119 if (ep == NULL)
120 return 0;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000121 len = printf("%s=%s\n", ep->key, ep->data);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200122 return len;
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400123 }
wdenka68d3ed2002-10-11 08:38:32 +0000124
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200125 /* print whole list */
Mike Frysinger2eb15732010-12-08 06:26:04 -0500126 len = hexport_r(&env_htab, '\n', &res, 0);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200127
128 if (len > 0) {
129 puts(res);
130 free(res);
131 return len;
132 }
133
134 /* should never happen */
135 return 0;
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400136}
137
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200138int do_env_print (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400139{
140 int i;
141 int rcode = 0;
142
143 if (argc == 1) {
144 /* print all env vars */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200145 rcode = env_print(NULL);
146 if (!rcode)
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400147 return 1;
148 printf("\nEnvironment size: %d/%ld bytes\n",
149 rcode, (ulong)ENV_SIZE);
wdenka68d3ed2002-10-11 08:38:32 +0000150 return 0;
151 }
152
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400153 /* print selected env vars */
154 for (i = 1; i < argc; ++i) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200155 int rc = env_print(argv[i]);
156 if (!rc) {
157 printf("## Error: \"%s\" not defined\n", argv[i]);
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400158 ++rcode;
wdenka68d3ed2002-10-11 08:38:32 +0000159 }
160 }
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400161
wdenka68d3ed2002-10-11 08:38:32 +0000162 return rcode;
163}
164
Kim Phillipsa000b792011-04-05 07:15:14 +0000165#ifdef CONFIG_CMD_GREPENV
166static int do_env_grep (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
167{
168 ENTRY *match;
169 unsigned char matched[env_htab.size / 8];
170 int rcode = 1, arg = 1, idx;
171
172 if (argc < 2)
173 return cmd_usage(cmdtp);
174
175 memset(matched, 0, env_htab.size / 8);
176
177 while (arg <= argc) {
178 idx = 0;
179 while ((idx = hstrstr_r(argv[arg], idx, &match, &env_htab))) {
180 if (!(matched[idx / 8] & (1 << (idx & 7)))) {
181 puts(match->key);
182 puts("=");
183 puts(match->data);
184 puts("\n");
185 }
186 matched[idx / 8] |= 1 << (idx & 7);
187 rcode = 0;
188 }
189 arg++;
190 }
191
192 return rcode;
193}
194#endif
195
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200196/*
wdenka68d3ed2002-10-11 08:38:32 +0000197 * Set a new environment variable,
198 * or replace or delete an existing one.
wdenka68d3ed2002-10-11 08:38:32 +0000199 */
200
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200201int _do_env_set (int flag, int argc, char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000202{
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200203 bd_t *bd = gd->bd;
204 int i, len;
wdenka68d3ed2002-10-11 08:38:32 +0000205 int console = -1;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200206 char *name, *value, *s;
207 ENTRY e, *ep;
wdenka68d3ed2002-10-11 08:38:32 +0000208
209 name = argv[1];
210
Wolfgang Denk471a7be2006-10-28 01:14:32 +0200211 if (strchr(name, '=')) {
Macpaul Linf3c615b2011-04-26 16:16:45 +0000212 printf("## Error: illegal character '=' in variable name \"%s\"\n", name);
Wolfgang Denk471a7be2006-10-28 01:14:32 +0200213 return 1;
214 }
215
Heiko Schocher2f70c492009-02-10 09:38:52 +0100216 env_id++;
wdenka68d3ed2002-10-11 08:38:32 +0000217 /*
218 * search if variable with this name already exists
219 */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200220 e.key = name;
221 e.data = NULL;
Mike Frysinger2eb15732010-12-08 06:26:04 -0500222 hsearch_r(e, FIND, &ep, &env_htab);
wdenka68d3ed2002-10-11 08:38:32 +0000223
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200224 /* Check for console redirection */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000225 if (strcmp(name, "stdin") == 0)
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200226 console = stdin;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000227 else if (strcmp(name, "stdout") == 0)
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200228 console = stdout;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000229 else if (strcmp(name, "stderr") == 0)
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200230 console = stderr;
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200231
232 if (console != -1) {
233 if (argc < 3) { /* Cannot delete it! */
234 printf("Can't delete \"%s\"\n", name);
235 return 1;
236 }
237
238#ifdef CONFIG_CONSOLE_MUX
239 i = iomux_doenv(console, argv[2]);
240 if (i)
241 return i;
242#else
243 /* Try assigning specified device */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000244 if (console_assign(console, argv[2]) < 0)
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200245 return 1;
246
247#ifdef CONFIG_SERIAL_MULTI
Macpaul Linf3c615b2011-04-26 16:16:45 +0000248 if (serial_assign(argv[2]) < 0)
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200249 return 1;
250#endif
251#endif /* CONFIG_CONSOLE_MUX */
252 }
253
wdenka68d3ed2002-10-11 08:38:32 +0000254 /*
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200255 * Some variables like "ethaddr" and "serial#" can be set only
256 * once and cannot be deleted; also, "ver" is readonly.
wdenka68d3ed2002-10-11 08:38:32 +0000257 */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200258 if (ep) { /* variable exists */
wdenka68d3ed2002-10-11 08:38:32 +0000259#ifndef CONFIG_ENV_OVERWRITE
Macpaul Linf3c615b2011-04-26 16:16:45 +0000260 if ((strcmp(name, "serial#") == 0) ||
261 ((strcmp(name, "ethaddr") == 0)
wdenka68d3ed2002-10-11 08:38:32 +0000262#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
Macpaul Linf3c615b2011-04-26 16:16:45 +0000263 && (strcmp(ep->data, MK_STR(CONFIG_ETHADDR)) != 0)
wdenka68d3ed2002-10-11 08:38:32 +0000264#endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
265 ) ) {
Macpaul Linf3c615b2011-04-26 16:16:45 +0000266 printf("Can't overwrite \"%s\"\n", name);
wdenka68d3ed2002-10-11 08:38:32 +0000267 return 1;
268 }
269#endif
wdenka68d3ed2002-10-11 08:38:32 +0000270 /*
271 * Switch to new baudrate if new baudrate is supported
272 */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000273 if (strcmp(name, "baudrate") == 0) {
wdenka68d3ed2002-10-11 08:38:32 +0000274 int baudrate = simple_strtoul(argv[2], NULL, 10);
275 int i;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000276 for (i = 0; i < N_BAUDRATES; ++i) {
wdenka68d3ed2002-10-11 08:38:32 +0000277 if (baudrate == baudrate_table[i])
278 break;
279 }
280 if (i == N_BAUDRATES) {
Macpaul Linf3c615b2011-04-26 16:16:45 +0000281 printf("## Baudrate %d bps not supported\n",
wdenka68d3ed2002-10-11 08:38:32 +0000282 baudrate);
283 return 1;
284 }
285 printf ("## Switch baudrate to %d bps and press ENTER ...\n",
286 baudrate);
287 udelay(50000);
288 gd->baudrate = baudrate;
Bartlomiej Siekac84bad02006-12-20 00:29:43 +0100289#if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2)
wdenkd0fb80c2003-01-11 09:48:40 +0000290 gd->bd->bi_baudrate = baudrate;
291#endif
292
Macpaul Linf3c615b2011-04-26 16:16:45 +0000293 serial_setbrg();
wdenka68d3ed2002-10-11 08:38:32 +0000294 udelay(50000);
295 for (;;) {
296 if (getc() == '\r')
Macpaul Linf3c615b2011-04-26 16:16:45 +0000297 break;
wdenka68d3ed2002-10-11 08:38:32 +0000298 }
299 }
wdenka68d3ed2002-10-11 08:38:32 +0000300 }
301
wdenka68d3ed2002-10-11 08:38:32 +0000302 /* Delete only ? */
303 if ((argc < 3) || argv[2] == NULL) {
Mike Frysinger2eb15732010-12-08 06:26:04 -0500304 int rc = hdelete_r(name, &env_htab);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200305 return !rc;
wdenka68d3ed2002-10-11 08:38:32 +0000306 }
307
308 /*
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200309 * Insert / replace new value
wdenka68d3ed2002-10-11 08:38:32 +0000310 */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000311 for (i = 2, len = 0; i < argc; ++i)
wdenka68d3ed2002-10-11 08:38:32 +0000312 len += strlen(argv[i]) + 1;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000313
314 value = malloc(len);
315 if (value == NULL) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200316 printf("## Can't malloc %d bytes\n", len);
wdenka68d3ed2002-10-11 08:38:32 +0000317 return 1;
318 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000319 for (i = 2, s = value; i < argc; ++i) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200320 char *v = argv[i];
wdenka68d3ed2002-10-11 08:38:32 +0000321
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200322 while ((*s++ = *v++) != '\0')
wdenka68d3ed2002-10-11 08:38:32 +0000323 ;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200324 *(s-1) = ' ';
wdenka68d3ed2002-10-11 08:38:32 +0000325 }
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200326 if (s != value)
327 *--s = '\0';
wdenka68d3ed2002-10-11 08:38:32 +0000328
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200329 e.key = name;
330 e.data = value;
Mike Frysinger2eb15732010-12-08 06:26:04 -0500331 hsearch_r(e, ENTER, &ep, &env_htab);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200332 free(value);
333 if (!ep) {
334 printf("## Error inserting \"%s\" variable, errno=%d\n",
335 name, errno);
336 return 1;
337 }
wdenka68d3ed2002-10-11 08:38:32 +0000338
339 /*
340 * Some variables should be updated when the corresponding
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200341 * entry in the environment is changed
wdenka68d3ed2002-10-11 08:38:32 +0000342 */
343
Macpaul Linf3c615b2011-04-26 16:16:45 +0000344 if (strcmp(name, "ipaddr") == 0) {
wdenka68d3ed2002-10-11 08:38:32 +0000345 char *s = argv[2]; /* always use only one arg */
346 char *e;
347 unsigned long addr;
348 bd->bi_ip_addr = 0;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000349 for (addr = 0, i = 0; i < 4; ++i) {
wdenka68d3ed2002-10-11 08:38:32 +0000350 ulong val = s ? simple_strtoul(s, &e, 10) : 0;
351 addr <<= 8;
352 addr |= (val & 0xFF);
353 if (s) s = (*e) ? e+1 : e;
354 }
355 bd->bi_ip_addr = htonl(addr);
356 return 0;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000357 } else if (strcmp(argv[1], "loadaddr") == 0) {
wdenka68d3ed2002-10-11 08:38:32 +0000358 load_addr = simple_strtoul(argv[2], NULL, 16);
359 return 0;
360 }
Jon Loeligerc76fe472007-07-08 18:02:23 -0500361#if defined(CONFIG_CMD_NET)
Macpaul Linf3c615b2011-04-26 16:16:45 +0000362 else if (strcmp(argv[1], "bootfile") == 0) {
363 copy_filename(BootFile, argv[2], sizeof(BootFile));
wdenka68d3ed2002-10-11 08:38:32 +0000364 return 0;
365 }
Jon Loeliger90253172007-07-10 11:02:44 -0500366#endif
wdenka68d3ed2002-10-11 08:38:32 +0000367 return 0;
368}
369
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200370int setenv(const char *varname, const char *varvalue)
wdenka68d3ed2002-10-11 08:38:32 +0000371{
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200372 const char * const argv[4] = { "setenv", varname, varvalue, NULL };
373
Peter Tyserb0fa8e52009-10-25 15:12:55 -0500374 if ((varvalue == NULL) || (varvalue[0] == '\0'))
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200375 return _do_env_set(0, 2, (char * const *)argv);
Jeffrey Mann9ffd4512007-04-23 14:00:11 +0200376 else
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200377 return _do_env_set(0, 3, (char * const *)argv);
wdenka68d3ed2002-10-11 08:38:32 +0000378}
379
Macpaul Linf3c615b2011-04-26 16:16:45 +0000380int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000381{
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200382 if (argc < 2)
383 return cmd_usage(cmdtp);
wdenka68d3ed2002-10-11 08:38:32 +0000384
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200385 return _do_env_set(flag, argc, argv);
wdenka68d3ed2002-10-11 08:38:32 +0000386}
387
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200388/*
wdenka68d3ed2002-10-11 08:38:32 +0000389 * Prompt for environment variable
390 */
Jon Loeligerc76fe472007-07-08 18:02:23 -0500391#if defined(CONFIG_CMD_ASKENV)
Macpaul Linf3c615b2011-04-26 16:16:45 +0000392int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000393{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200394 extern char console_buffer[CONFIG_SYS_CBSIZE];
395 char message[CONFIG_SYS_CBSIZE];
396 int size = CONFIG_SYS_CBSIZE - 1;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200397 int i, len, pos;
wdenka68d3ed2002-10-11 08:38:32 +0000398 char *local_args[4];
399
400 local_args[0] = argv[0];
401 local_args[1] = argv[1];
402 local_args[2] = NULL;
403 local_args[3] = NULL;
404
wdenka68d3ed2002-10-11 08:38:32 +0000405 /* Check the syntax */
406 switch (argc) {
407 case 1:
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200408 return cmd_usage(cmdtp);
wdenka68d3ed2002-10-11 08:38:32 +0000409
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200410 case 2: /* env_ask envname */
411 sprintf(message, "Please enter '%s':", argv[1]);
wdenka68d3ed2002-10-11 08:38:32 +0000412 break;
413
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200414 case 3: /* env_ask envname size */
415 sprintf(message, "Please enter '%s':", argv[1]);
416 size = simple_strtoul(argv[2], NULL, 10);
wdenka68d3ed2002-10-11 08:38:32 +0000417 break;
418
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200419 default: /* env_ask envname message1 ... messagen size */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000420 for (i = 2, pos = 0; i < argc - 1; i++) {
421 if (pos)
wdenka68d3ed2002-10-11 08:38:32 +0000422 message[pos++] = ' ';
Macpaul Linf3c615b2011-04-26 16:16:45 +0000423
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200424 strcpy(message+pos, argv[i]);
wdenka68d3ed2002-10-11 08:38:32 +0000425 pos += strlen(argv[i]);
426 }
427 message[pos] = '\0';
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200428 size = simple_strtoul(argv[argc - 1], NULL, 10);
wdenka68d3ed2002-10-11 08:38:32 +0000429 break;
430 }
431
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200432 if (size >= CONFIG_SYS_CBSIZE)
433 size = CONFIG_SYS_CBSIZE - 1;
wdenka68d3ed2002-10-11 08:38:32 +0000434
435 if (size <= 0)
436 return 1;
437
438 /* prompt for input */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200439 len = readline(message);
wdenka68d3ed2002-10-11 08:38:32 +0000440
441 if (size < len)
442 console_buffer[size] = '\0';
443
444 len = 2;
445 if (console_buffer[0] != '\0') {
446 local_args[2] = console_buffer;
447 len = 3;
448 }
449
450 /* Continue calling setenv code */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200451 return _do_env_set(flag, len, local_args);
wdenka68d3ed2002-10-11 08:38:32 +0000452}
Jon Loeliger90253172007-07-10 11:02:44 -0500453#endif
wdenka68d3ed2002-10-11 08:38:32 +0000454
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200455/*
Peter Tyser246c6922009-10-25 15:12:56 -0500456 * Interactively edit an environment variable
457 */
458#if defined(CONFIG_CMD_EDITENV)
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200459int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Peter Tyser246c6922009-10-25 15:12:56 -0500460{
461 char buffer[CONFIG_SYS_CBSIZE];
462 char *init_val;
Peter Tyser246c6922009-10-25 15:12:56 -0500463
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200464 if (argc < 2)
465 return cmd_usage(cmdtp);
Peter Tyser246c6922009-10-25 15:12:56 -0500466
467 /* Set read buffer to initial value or empty sting */
468 init_val = getenv(argv[1]);
469 if (init_val)
Marek Vasut7fcd9bb2011-09-26 02:26:03 +0200470 sprintf(buffer, "%s", init_val);
Peter Tyser246c6922009-10-25 15:12:56 -0500471 else
472 buffer[0] = '\0';
473
474 readline_into_buffer("edit: ", buffer);
475
476 return setenv(argv[1], buffer);
477}
478#endif /* CONFIG_CMD_EDITENV */
479
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200480/*
wdenka68d3ed2002-10-11 08:38:32 +0000481 * Look up variable from environment,
482 * return address of storage for that variable,
483 * or NULL if not found
484 */
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200485char *getenv(const char *name)
wdenka68d3ed2002-10-11 08:38:32 +0000486{
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200487 if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */
488 ENTRY e, *ep;
wdenka68d3ed2002-10-11 08:38:32 +0000489
Wolfgang Denk91a76752010-07-24 20:22:02 +0200490 WATCHDOG_RESET();
wdenk2a3cb022002-11-05 21:01:48 +0000491
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200492 e.key = name;
493 e.data = NULL;
Mike Frysinger2eb15732010-12-08 06:26:04 -0500494 hsearch_r(e, FIND, &ep, &env_htab);
wdenka68d3ed2002-10-11 08:38:32 +0000495
Macpaul Linf3c615b2011-04-26 16:16:45 +0000496 return ep ? ep->data : NULL;
wdenka68d3ed2002-10-11 08:38:32 +0000497 }
498
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200499 /* restricted capabilities before import */
Wolfgang Denk91a76752010-07-24 20:22:02 +0200500
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200501 if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0)
502 return (char *)(gd->env_buf);
503
504 return NULL;
wdenka68d3ed2002-10-11 08:38:32 +0000505}
506
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200507/*
508 * Look up variable from environment for restricted C runtime env.
509 */
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200510int getenv_f(const char *name, char *buf, unsigned len)
wdenka68d3ed2002-10-11 08:38:32 +0000511{
512 int i, nxt;
513
Macpaul Linf3c615b2011-04-26 16:16:45 +0000514 for (i = 0; env_get_char(i) != '\0'; i = nxt+1) {
wdenka68d3ed2002-10-11 08:38:32 +0000515 int val, n;
516
Macpaul Linf3c615b2011-04-26 16:16:45 +0000517 for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) {
518 if (nxt >= CONFIG_ENV_SIZE)
519 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000520 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000521
522 val = envmatch((uchar *)name, i);
523 if (val < 0)
wdenka68d3ed2002-10-11 08:38:32 +0000524 continue;
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200525
wdenka68d3ed2002-10-11 08:38:32 +0000526 /* found; copy out */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000527 for (n = 0; n < len; ++n, ++buf) {
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200528 if ((*buf = env_get_char(val++)) == '\0')
529 return n;
530 }
531
532 if (n)
533 *--buf = '\0';
534
Wolfgang Denka02a8842011-05-04 10:29:49 +0000535 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
536 len, name);
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200537
538 return n;
wdenka68d3ed2002-10-11 08:38:32 +0000539 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000540 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000541}
542
Mike Frysingerbdab39d2009-01-28 19:08:14 -0500543#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
Mike Frysingerba69dc22008-12-30 02:59:25 -0500544
Macpaul Linf3c615b2011-04-26 16:16:45 +0000545int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000546{
Macpaul Linf3c615b2011-04-26 16:16:45 +0000547 extern char *env_name_spec;
wdenka68d3ed2002-10-11 08:38:32 +0000548
Macpaul Linf3c615b2011-04-26 16:16:45 +0000549 printf("Saving Environment to %s...\n", env_name_spec);
wdenka68d3ed2002-10-11 08:38:32 +0000550
Macpaul Linf3c615b2011-04-26 16:16:45 +0000551 return saveenv() ? 1 : 0;
wdenka68d3ed2002-10-11 08:38:32 +0000552}
wdenk8bde7f72003-06-27 21:31:46 +0000553
Mike Frysingerba69dc22008-12-30 02:59:25 -0500554U_BOOT_CMD(
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200555 saveenv, 1, 0, do_env_save,
Peter Tyser2fb26042009-01-27 18:03:12 -0600556 "save environment variables to persistent storage",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200557 ""
Mike Frysingerba69dc22008-12-30 02:59:25 -0500558);
559
wdenka68d3ed2002-10-11 08:38:32 +0000560#endif
561
562
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200563/*
wdenka68d3ed2002-10-11 08:38:32 +0000564 * Match a name / name=value pair
565 *
566 * s1 is either a simple 'name', or a 'name=value' pair.
567 * i2 is the environment index for a 'name2=value2' pair.
568 * If the names match, return the index for the value2, else NULL.
569 */
570
Macpaul Linf3c615b2011-04-26 16:16:45 +0000571int envmatch(uchar *s1, int i2)
wdenka68d3ed2002-10-11 08:38:32 +0000572{
wdenka68d3ed2002-10-11 08:38:32 +0000573 while (*s1 == env_get_char(i2++))
574 if (*s1++ == '=')
Macpaul Linf3c615b2011-04-26 16:16:45 +0000575 return i2;
wdenka68d3ed2002-10-11 08:38:32 +0000576 if (*s1 == '\0' && env_get_char(i2-1) == '=')
Macpaul Linf3c615b2011-04-26 16:16:45 +0000577 return i2;
578 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000579}
wdenk8bde7f72003-06-27 21:31:46 +0000580
Macpaul Linf3c615b2011-04-26 16:16:45 +0000581static int do_env_default(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200582{
Macpaul Linf3c615b2011-04-26 16:16:45 +0000583 if ((argc != 2) || (strcmp(argv[1], "-f") != 0))
Thomas Weber0d302af2010-11-25 08:05:28 +0100584 return cmd_usage(cmdtp);
Macpaul Linf3c615b2011-04-26 16:16:45 +0000585
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200586 set_default_env("## Resetting to default environment\n");
587 return 0;
588}
wdenk8bde7f72003-06-27 21:31:46 +0000589
Macpaul Linf3c615b2011-04-26 16:16:45 +0000590static int do_env_delete(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200591{
592 printf("Not implemented yet\n");
593 return 0;
594}
595
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500596#ifdef CONFIG_CMD_EXPORTENV
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200597/*
598 * env export [-t | -b | -c] addr [size]
599 * -t: export as text format; if size is given, data will be
600 * padded with '\0' bytes; if not, one terminating '\0'
601 * will be added (which is included in the "filesize"
602 * setting so you can for exmple copy this to flash and
603 * keep the termination).
604 * -b: export as binary format (name=value pairs separated by
605 * '\0', list end marked by double "\0\0")
606 * -c: export as checksum protected environment format as
607 * used for example by "saveenv" command
608 * addr: memory address where environment gets stored
609 * size: size of output buffer
610 *
611 * With "-c" and size is NOT given, then the export command will
612 * format the data as currently used for the persistent storage,
613 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
614 * prepend a valid CRC32 checksum and, in case of resundant
615 * environment, a "current" redundancy flag. If size is given, this
616 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
617 * checksum and redundancy flag will be inserted.
618 *
619 * With "-b" and "-t", always only the real data (including a
620 * terminating '\0' byte) will be written; here the optional size
621 * argument will be used to make sure not to overflow the user
622 * provided buffer; the command will abort if the size is not
623 * sufficient. Any remainign space will be '\0' padded.
624 *
625 * On successful return, the variable "filesize" will be set.
626 * Note that filesize includes the trailing/terminating '\0' byte(s).
627 *
628 * Usage szenario: create a text snapshot/backup of the current settings:
629 *
630 * => env export -t 100000
631 * => era ${backup_addr} +${filesize}
632 * => cp.b 100000 ${backup_addr} ${filesize}
633 *
634 * Re-import this snapshot, deleting all other settings:
635 *
636 * => env import -d -t ${backup_addr}
637 */
638static int do_env_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
639{
640 char buf[32];
641 char *addr, *cmd, *res;
642 size_t size;
643 ssize_t len;
644 env_t *envp;
645 char sep = '\n';
646 int chk = 0;
647 int fmt = 0;
648
649 cmd = *argv;
650
651 while (--argc > 0 && **++argv == '-') {
652 char *arg = *argv;
653 while (*++arg) {
654 switch (*arg) {
655 case 'b': /* raw binary format */
656 if (fmt++)
657 goto sep_err;
658 sep = '\0';
659 break;
660 case 'c': /* external checksum format */
661 if (fmt++)
662 goto sep_err;
663 sep = '\0';
664 chk = 1;
665 break;
666 case 't': /* text format */
667 if (fmt++)
668 goto sep_err;
669 sep = '\n';
670 break;
671 default:
Thomas Weber0d302af2010-11-25 08:05:28 +0100672 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200673 }
674 }
675 }
676
Macpaul Linf3c615b2011-04-26 16:16:45 +0000677 if (argc < 1)
Thomas Weber0d302af2010-11-25 08:05:28 +0100678 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200679
680 addr = (char *)simple_strtoul(argv[0], NULL, 16);
681
682 if (argc == 2) {
683 size = simple_strtoul(argv[1], NULL, 16);
684 memset(addr, '\0', size);
685 } else {
686 size = 0;
687 }
688
689 if (sep) { /* export as text file */
Mike Frysinger2eb15732010-12-08 06:26:04 -0500690 len = hexport_r(&env_htab, sep, &addr, size);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200691 if (len < 0) {
692 error("Cannot export environment: errno = %d\n",
693 errno);
694 return 1;
695 }
Andreas Bießmann8c3aff52011-02-09 15:10:29 +0100696 sprintf(buf, "%zX", (size_t)len);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200697 setenv("filesize", buf);
698
699 return 0;
700 }
701
702 envp = (env_t *)addr;
703
704 if (chk) /* export as checksum protected block */
705 res = (char *)envp->data;
706 else /* export as raw binary data */
707 res = addr;
708
Mike Frysinger2eb15732010-12-08 06:26:04 -0500709 len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200710 if (len < 0) {
711 error("Cannot export environment: errno = %d\n",
712 errno);
713 return 1;
714 }
715
716 if (chk) {
717 envp->crc = crc32(0, envp->data, ENV_SIZE);
718#ifdef CONFIG_ENV_ADDR_REDUND
719 envp->flags = ACTIVE_FLAG;
720#endif
721 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000722 sprintf(buf, "%zX", (size_t)(len + offsetof(env_t, data)));
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200723 setenv("filesize", buf);
724
725 return 0;
726
727sep_err:
728 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
729 cmd);
730 return 1;
731}
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500732#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200733
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500734#ifdef CONFIG_CMD_IMPORTENV
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200735/*
736 * env import [-d] [-t | -b | -c] addr [size]
737 * -d: delete existing environment before importing;
738 * otherwise overwrite / append to existion definitions
739 * -t: assume text format; either "size" must be given or the
740 * text data must be '\0' terminated
741 * -b: assume binary format ('\0' separated, "\0\0" terminated)
742 * -c: assume checksum protected environment format
743 * addr: memory address to read from
744 * size: length of input data; if missing, proper '\0'
745 * termination is mandatory
746 */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000747static int do_env_import(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200748{
749 char *cmd, *addr;
750 char sep = '\n';
751 int chk = 0;
752 int fmt = 0;
753 int del = 0;
754 size_t size;
755
756 cmd = *argv;
757
758 while (--argc > 0 && **++argv == '-') {
759 char *arg = *argv;
760 while (*++arg) {
761 switch (*arg) {
762 case 'b': /* raw binary format */
763 if (fmt++)
764 goto sep_err;
765 sep = '\0';
766 break;
767 case 'c': /* external checksum format */
768 if (fmt++)
769 goto sep_err;
770 sep = '\0';
771 chk = 1;
772 break;
773 case 't': /* text format */
774 if (fmt++)
775 goto sep_err;
776 sep = '\n';
777 break;
778 case 'd':
779 del = 1;
780 break;
781 default:
Thomas Weber0d302af2010-11-25 08:05:28 +0100782 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200783 }
784 }
785 }
786
Macpaul Linf3c615b2011-04-26 16:16:45 +0000787 if (argc < 1)
Thomas Weber0d302af2010-11-25 08:05:28 +0100788 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200789
790 if (!fmt)
791 printf("## Warning: defaulting to text format\n");
792
793 addr = (char *)simple_strtoul(argv[0], NULL, 16);
794
795 if (argc == 2) {
796 size = simple_strtoul(argv[1], NULL, 16);
797 } else {
798 char *s = addr;
799
800 size = 0;
801
802 while (size < MAX_ENV_SIZE) {
803 if ((*s == sep) && (*(s+1) == '\0'))
804 break;
805 ++s;
806 ++size;
807 }
808 if (size == MAX_ENV_SIZE) {
809 printf("## Warning: Input data exceeds %d bytes"
810 " - truncated\n", MAX_ENV_SIZE);
811 }
812 ++size;
813 printf("## Info: input data size = %zd = 0x%zX\n", size, size);
814 }
815
816 if (chk) {
817 uint32_t crc;
818 env_t *ep = (env_t *)addr;
819
820 size -= offsetof(env_t, data);
821 memcpy(&crc, &ep->crc, sizeof(crc));
822
823 if (crc32(0, ep->data, size) != crc) {
824 puts("## Error: bad CRC, import failed\n");
825 return 1;
826 }
827 addr = (char *)ep->data;
828 }
829
Mike Frysinger2eb15732010-12-08 06:26:04 -0500830 if (himport_r(&env_htab, addr, size, sep, del ? 0 : H_NOCLEAR) == 0) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200831 error("Environment import failed: errno = %d\n", errno);
832 return 1;
833 }
834 gd->flags |= GD_FLG_ENV_READY;
835
836 return 0;
837
838sep_err:
839 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
840 cmd);
841 return 1;
842}
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500843#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200844
845#if defined(CONFIG_CMD_RUN)
Macpaul Linf3c615b2011-04-26 16:16:45 +0000846extern int do_run(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200847#endif
848
849/*
850 * New command line interface: "env" command with subcommands
851 */
852static cmd_tbl_t cmd_env_sub[] = {
853#if defined(CONFIG_CMD_ASKENV)
854 U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""),
855#endif
856 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""),
857 U_BOOT_CMD_MKENT(delete, 2, 0, do_env_delete, "", ""),
858#if defined(CONFIG_CMD_EDITENV)
859 U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
860#endif
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500861#if defined(CONFIG_CMD_EXPORTENV)
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200862 U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500863#endif
Kim Phillipsa000b792011-04-05 07:15:14 +0000864#if defined(CONFIG_CMD_GREPENV)
865 U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""),
866#endif
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500867#if defined(CONFIG_CMD_IMPORTENV)
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200868 U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500869#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200870 U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
871#if defined(CONFIG_CMD_RUN)
872 U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),
873#endif
874#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
875 U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""),
876#endif
877 U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""),
878};
879
Wolfgang Denk2e5167c2010-10-28 20:00:11 +0200880#if defined(CONFIG_NEEDS_MANUAL_RELOC)
Heiko Schocher60f7da12010-10-05 14:17:00 +0200881void env_reloc(void)
882{
883 fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
884}
885#endif
886
Macpaul Linf3c615b2011-04-26 16:16:45 +0000887static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200888{
889 cmd_tbl_t *cp;
890
Thomas Weber5904da02010-11-24 13:07:52 +0100891 if (argc < 2)
892 return cmd_usage(cmdtp);
893
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200894 /* drop initial "env" arg */
895 argc--;
896 argv++;
897
898 cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
899
900 if (cp)
901 return cp->cmd(cmdtp, flag, argc, argv);
902
Thomas Weber0d302af2010-11-25 08:05:28 +0100903 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200904}
905
906U_BOOT_CMD(
907 env, CONFIG_SYS_MAXARGS, 1, do_env,
908 "environment handling commands",
909#if defined(CONFIG_CMD_ASKENV)
910 "ask name [message] [size] - ask for environment variable\nenv "
911#endif
912 "default -f - reset default environment\n"
913#if defined(CONFIG_CMD_EDITENV)
914 "env edit name - edit environment variable\n"
915#endif
Kim Phillipsa000b792011-04-05 07:15:14 +0000916 "env export [-t | -b | -c] addr [size] - export environment\n"
917#if defined(CONFIG_CMD_GREPENV)
918 "env grep string [...] - search environment\n"
919#endif
920 "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200921 "env print [name ...] - print environment\n"
922#if defined(CONFIG_CMD_RUN)
923 "env run var [...] - run commands in an environment variable\n"
924#endif
925 "env save - save environment\n"
926 "env set [-f] name [arg ...]\n"
927);
928
929/*
930 * Old command line interface, kept for compatibility
931 */
wdenk8bde7f72003-06-27 21:31:46 +0000932
Peter Tyser246c6922009-10-25 15:12:56 -0500933#if defined(CONFIG_CMD_EDITENV)
Mike Frysinger722b0612010-10-20 03:52:39 -0400934U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200935 editenv, 2, 0, do_env_edit,
Peter Tyser246c6922009-10-25 15:12:56 -0500936 "edit environment variable",
937 "name\n"
Mike Frysinger722b0612010-10-20 03:52:39 -0400938 " - edit environment variable 'name'",
939 var_complete
Peter Tyser246c6922009-10-25 15:12:56 -0500940);
941#endif
942
Mike Frysinger722b0612010-10-20 03:52:39 -0400943U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200944 printenv, CONFIG_SYS_MAXARGS, 1, do_env_print,
Peter Tyser2fb26042009-01-27 18:03:12 -0600945 "print environment variables",
wdenk8bde7f72003-06-27 21:31:46 +0000946 "\n - print values of all environment variables\n"
947 "printenv name ...\n"
Mike Frysinger722b0612010-10-20 03:52:39 -0400948 " - print value of environment variable 'name'",
949 var_complete
wdenk8bde7f72003-06-27 21:31:46 +0000950);
951
Kim Phillipsa000b792011-04-05 07:15:14 +0000952#ifdef CONFIG_CMD_GREPENV
953U_BOOT_CMD_COMPLETE(
954 grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep,
955 "search environment variables",
956 "string ...\n"
957 " - list environment name=value pairs matching 'string'",
958 var_complete
959);
960#endif
961
Mike Frysinger722b0612010-10-20 03:52:39 -0400962U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200963 setenv, CONFIG_SYS_MAXARGS, 0, do_env_set,
Peter Tyser2fb26042009-01-27 18:03:12 -0600964 "set environment variables",
wdenk8bde7f72003-06-27 21:31:46 +0000965 "name value ...\n"
966 " - set environment variable 'name' to 'value ...'\n"
967 "setenv name\n"
Mike Frysinger722b0612010-10-20 03:52:39 -0400968 " - delete environment variable 'name'",
969 var_complete
wdenk8bde7f72003-06-27 21:31:46 +0000970);
971
Jon Loeligerc76fe472007-07-08 18:02:23 -0500972#if defined(CONFIG_CMD_ASKENV)
wdenk8bde7f72003-06-27 21:31:46 +0000973
wdenk0d498392003-07-01 21:06:45 +0000974U_BOOT_CMD(
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200975 askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask,
Peter Tyser2fb26042009-01-27 18:03:12 -0600976 "get environment variables from stdin",
wdenk8bde7f72003-06-27 21:31:46 +0000977 "name [message] [size]\n"
978 " - get environment variable 'name' from stdin (max 'size' chars)\n"
979 "askenv name\n"
980 " - get environment variable 'name' from stdin\n"
981 "askenv name size\n"
982 " - get environment variable 'name' from stdin (max 'size' chars)\n"
983 "askenv name [message] size\n"
984 " - display 'message' string and get environment variable 'name'"
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200985 "from stdin (max 'size' chars)"
wdenk8bde7f72003-06-27 21:31:46 +0000986);
Jon Loeliger90253172007-07-10 11:02:44 -0500987#endif
wdenk8bde7f72003-06-27 21:31:46 +0000988
Jon Loeligerc76fe472007-07-08 18:02:23 -0500989#if defined(CONFIG_CMD_RUN)
Mike Frysinger722b0612010-10-20 03:52:39 -0400990U_BOOT_CMD_COMPLETE(
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200991 run, CONFIG_SYS_MAXARGS, 1, do_run,
Peter Tyser2fb26042009-01-27 18:03:12 -0600992 "run commands in an environment variable",
wdenk8bde7f72003-06-27 21:31:46 +0000993 "var [...]\n"
Mike Frysinger722b0612010-10-20 03:52:39 -0400994 " - run the commands in the environment variable(s) 'var'",
995 var_complete
wdenk8bde7f72003-06-27 21:31:46 +0000996);
Jon Loeliger90253172007-07-10 11:02:44 -0500997#endif