blob: 599535449ebf49066f0c5e5dd084e9fd760bd814 [file] [log] [blame]
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 */
Simon Glass1aec2442011-10-21 18:51:38 +000082ulong save_addr; /* Default Save Address */
83ulong save_size; /* Default Save Size (in bytes) */
Mike Frysinger558605c2010-12-21 14:08:27 -050084
wdenka68d3ed2002-10-11 08:38:32 +000085/*
86 * Table with supported baudrates (defined in config_xyz.h)
87 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020088static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE;
wdenka68d3ed2002-10-11 08:38:32 +000089#define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
90
Heiko Schocherda954272009-04-28 08:36:11 +020091/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +020092 * This variable is incremented on each do_env_set(), so it can
Heiko Schocherda954272009-04-28 08:36:11 +020093 * be used via get_env_id() as an indication, if the environment
94 * has changed or not. So it is possible to reread an environment
95 * variable only if the environment was changed ... done so for
96 * example in NetInitLoop()
97 */
Heiko Schocher2f70c492009-02-10 09:38:52 +010098static int env_id = 1;
wdenka68d3ed2002-10-11 08:38:32 +000099
Macpaul Linf3c615b2011-04-26 16:16:45 +0000100int get_env_id(void)
Heiko Schocher2f70c492009-02-10 09:38:52 +0100101{
102 return env_id;
103}
wdenka68d3ed2002-10-11 08:38:32 +0000104
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400105/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200106 * Command interface: print one or all environment variables
107 *
108 * Returns 0 in case of error, or length of printed string
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400109 */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200110static int env_print(char *name)
wdenka68d3ed2002-10-11 08:38:32 +0000111{
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200112 char *res = NULL;
113 size_t len;
wdenka68d3ed2002-10-11 08:38:32 +0000114
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200115 if (name) { /* print a single name */
116 ENTRY e, *ep;
wdenka68d3ed2002-10-11 08:38:32 +0000117
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200118 e.key = name;
119 e.data = NULL;
Mike Frysinger2eb15732010-12-08 06:26:04 -0500120 hsearch_r(e, FIND, &ep, &env_htab);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200121 if (ep == NULL)
122 return 0;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000123 len = printf("%s=%s\n", ep->key, ep->data);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200124 return len;
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400125 }
wdenka68d3ed2002-10-11 08:38:32 +0000126
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200127 /* print whole list */
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100128 len = hexport_r(&env_htab, '\n', &res, 0, 0, NULL);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200129
130 if (len > 0) {
131 puts(res);
132 free(res);
133 return len;
134 }
135
136 /* should never happen */
137 return 0;
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400138}
139
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200140int do_env_print (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400141{
142 int i;
143 int rcode = 0;
144
145 if (argc == 1) {
146 /* print all env vars */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200147 rcode = env_print(NULL);
148 if (!rcode)
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400149 return 1;
150 printf("\nEnvironment size: %d/%ld bytes\n",
151 rcode, (ulong)ENV_SIZE);
wdenka68d3ed2002-10-11 08:38:32 +0000152 return 0;
153 }
154
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400155 /* print selected env vars */
156 for (i = 1; i < argc; ++i) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200157 int rc = env_print(argv[i]);
158 if (!rc) {
159 printf("## Error: \"%s\" not defined\n", argv[i]);
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400160 ++rcode;
wdenka68d3ed2002-10-11 08:38:32 +0000161 }
162 }
Mike Frysinger4c94f6c2009-05-24 02:26:19 -0400163
wdenka68d3ed2002-10-11 08:38:32 +0000164 return rcode;
165}
166
Kim Phillipsa000b792011-04-05 07:15:14 +0000167#ifdef CONFIG_CMD_GREPENV
Igor Grinbergd09b1782011-11-07 01:13:59 +0000168static int do_env_grep(cmd_tbl_t *cmdtp, int flag,
169 int argc, char * const argv[])
Kim Phillipsa000b792011-04-05 07:15:14 +0000170{
171 ENTRY *match;
172 unsigned char matched[env_htab.size / 8];
173 int rcode = 1, arg = 1, idx;
174
175 if (argc < 2)
176 return cmd_usage(cmdtp);
177
178 memset(matched, 0, env_htab.size / 8);
179
180 while (arg <= argc) {
181 idx = 0;
Kumar Gala068f1582011-11-23 09:48:02 +0000182 while ((idx = hstrstr_r(argv[arg], idx, &match, &env_htab))) {
Kim Phillipsa000b792011-04-05 07:15:14 +0000183 if (!(matched[idx / 8] & (1 << (idx & 7)))) {
184 puts(match->key);
185 puts("=");
186 puts(match->data);
187 puts("\n");
188 }
189 matched[idx / 8] |= 1 << (idx & 7);
190 rcode = 0;
191 }
192 arg++;
193 }
194
195 return rcode;
196}
197#endif
198
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200199/*
wdenka68d3ed2002-10-11 08:38:32 +0000200 * Set a new environment variable,
201 * or replace or delete an existing one.
wdenka68d3ed2002-10-11 08:38:32 +0000202 */
Igor Grinbergd09b1782011-11-07 01:13:59 +0000203int _do_env_set(int flag, int argc, char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000204{
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200205 bd_t *bd = gd->bd;
206 int i, len;
wdenka68d3ed2002-10-11 08:38:32 +0000207 int console = -1;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200208 char *name, *value, *s;
209 ENTRY e, *ep;
wdenka68d3ed2002-10-11 08:38:32 +0000210
211 name = argv[1];
212
Wolfgang Denk471a7be2006-10-28 01:14:32 +0200213 if (strchr(name, '=')) {
Igor Grinbergd09b1782011-11-07 01:13:59 +0000214 printf("## Error: illegal character '=' in variable name"
215 "\"%s\"\n", name);
Wolfgang Denk471a7be2006-10-28 01:14:32 +0200216 return 1;
217 }
218
Heiko Schocher2f70c492009-02-10 09:38:52 +0100219 env_id++;
wdenka68d3ed2002-10-11 08:38:32 +0000220 /*
221 * search if variable with this name already exists
222 */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200223 e.key = name;
224 e.data = NULL;
Mike Frysinger2eb15732010-12-08 06:26:04 -0500225 hsearch_r(e, FIND, &ep, &env_htab);
wdenka68d3ed2002-10-11 08:38:32 +0000226
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200227 /* Check for console redirection */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000228 if (strcmp(name, "stdin") == 0)
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200229 console = stdin;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000230 else if (strcmp(name, "stdout") == 0)
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200231 console = stdout;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000232 else if (strcmp(name, "stderr") == 0)
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200233 console = stderr;
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200234
235 if (console != -1) {
236 if (argc < 3) { /* Cannot delete it! */
237 printf("Can't delete \"%s\"\n", name);
238 return 1;
239 }
240
241#ifdef CONFIG_CONSOLE_MUX
242 i = iomux_doenv(console, argv[2]);
243 if (i)
244 return i;
245#else
246 /* Try assigning specified device */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000247 if (console_assign(console, argv[2]) < 0)
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200248 return 1;
249
250#ifdef CONFIG_SERIAL_MULTI
Macpaul Linf3c615b2011-04-26 16:16:45 +0000251 if (serial_assign(argv[2]) < 0)
Alessandro Rubini9c5586a2009-10-08 14:29:14 +0200252 return 1;
253#endif
254#endif /* CONFIG_CONSOLE_MUX */
255 }
256
wdenka68d3ed2002-10-11 08:38:32 +0000257 /*
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200258 * Some variables like "ethaddr" and "serial#" can be set only
259 * once and cannot be deleted; also, "ver" is readonly.
wdenka68d3ed2002-10-11 08:38:32 +0000260 */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200261 if (ep) { /* variable exists */
wdenka68d3ed2002-10-11 08:38:32 +0000262#ifndef CONFIG_ENV_OVERWRITE
Igor Grinbergd09b1782011-11-07 01:13:59 +0000263 if (strcmp(name, "serial#") == 0 ||
264 (strcmp(name, "ethaddr") == 0
wdenka68d3ed2002-10-11 08:38:32 +0000265#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
Igor Grinbergd09b1782011-11-07 01:13:59 +0000266 && strcmp(ep->data, MK_STR(CONFIG_ETHADDR)) != 0
wdenka68d3ed2002-10-11 08:38:32 +0000267#endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
Igor Grinbergd09b1782011-11-07 01:13:59 +0000268 )) {
Macpaul Linf3c615b2011-04-26 16:16:45 +0000269 printf("Can't overwrite \"%s\"\n", name);
wdenka68d3ed2002-10-11 08:38:32 +0000270 return 1;
271 }
272#endif
wdenka68d3ed2002-10-11 08:38:32 +0000273 /*
274 * Switch to new baudrate if new baudrate is supported
275 */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000276 if (strcmp(name, "baudrate") == 0) {
wdenka68d3ed2002-10-11 08:38:32 +0000277 int baudrate = simple_strtoul(argv[2], NULL, 10);
278 int i;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000279 for (i = 0; i < N_BAUDRATES; ++i) {
wdenka68d3ed2002-10-11 08:38:32 +0000280 if (baudrate == baudrate_table[i])
281 break;
282 }
283 if (i == N_BAUDRATES) {
Macpaul Linf3c615b2011-04-26 16:16:45 +0000284 printf("## Baudrate %d bps not supported\n",
wdenka68d3ed2002-10-11 08:38:32 +0000285 baudrate);
286 return 1;
287 }
Igor Grinbergd09b1782011-11-07 01:13:59 +0000288 printf("## Switch baudrate to %d bps and"
289 "press ENTER ...\n", baudrate);
wdenka68d3ed2002-10-11 08:38:32 +0000290 udelay(50000);
291 gd->baudrate = baudrate;
Bartlomiej Siekac84bad02006-12-20 00:29:43 +0100292#if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2)
wdenkd0fb80c2003-01-11 09:48:40 +0000293 gd->bd->bi_baudrate = baudrate;
294#endif
295
Macpaul Linf3c615b2011-04-26 16:16:45 +0000296 serial_setbrg();
wdenka68d3ed2002-10-11 08:38:32 +0000297 udelay(50000);
Igor Grinbergd09b1782011-11-07 01:13:59 +0000298 while (getc() != '\r')
299 ;
wdenka68d3ed2002-10-11 08:38:32 +0000300 }
wdenka68d3ed2002-10-11 08:38:32 +0000301 }
302
wdenka68d3ed2002-10-11 08:38:32 +0000303 /* Delete only ? */
Igor Grinbergd09b1782011-11-07 01:13:59 +0000304 if (argc < 3 || argv[2] == NULL) {
Mike Frysinger2eb15732010-12-08 06:26:04 -0500305 int rc = hdelete_r(name, &env_htab);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200306 return !rc;
wdenka68d3ed2002-10-11 08:38:32 +0000307 }
308
309 /*
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200310 * Insert / replace new value
wdenka68d3ed2002-10-11 08:38:32 +0000311 */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000312 for (i = 2, len = 0; i < argc; ++i)
wdenka68d3ed2002-10-11 08:38:32 +0000313 len += strlen(argv[i]) + 1;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000314
315 value = malloc(len);
316 if (value == NULL) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200317 printf("## Can't malloc %d bytes\n", len);
wdenka68d3ed2002-10-11 08:38:32 +0000318 return 1;
319 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000320 for (i = 2, s = value; i < argc; ++i) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200321 char *v = argv[i];
wdenka68d3ed2002-10-11 08:38:32 +0000322
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200323 while ((*s++ = *v++) != '\0')
wdenka68d3ed2002-10-11 08:38:32 +0000324 ;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000325 *(s - 1) = ' ';
wdenka68d3ed2002-10-11 08:38:32 +0000326 }
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200327 if (s != value)
328 *--s = '\0';
wdenka68d3ed2002-10-11 08:38:32 +0000329
Igor Grinbergd09b1782011-11-07 01:13:59 +0000330 e.key = name;
331 e.data = value;
Mike Frysinger2eb15732010-12-08 06:26:04 -0500332 hsearch_r(e, ENTER, &ep, &env_htab);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200333 free(value);
334 if (!ep) {
335 printf("## Error inserting \"%s\" variable, errno=%d\n",
336 name, errno);
337 return 1;
338 }
wdenka68d3ed2002-10-11 08:38:32 +0000339
340 /*
341 * Some variables should be updated when the corresponding
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200342 * entry in the environment is changed
wdenka68d3ed2002-10-11 08:38:32 +0000343 */
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;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000352 addr |= val & 0xFF;
353 if (s)
354 s = *e ? e + 1 : e;
wdenka68d3ed2002-10-11 08:38:32 +0000355 }
356 bd->bi_ip_addr = htonl(addr);
357 return 0;
Macpaul Linf3c615b2011-04-26 16:16:45 +0000358 } else if (strcmp(argv[1], "loadaddr") == 0) {
wdenka68d3ed2002-10-11 08:38:32 +0000359 load_addr = simple_strtoul(argv[2], NULL, 16);
360 return 0;
361 }
Jon Loeligerc76fe472007-07-08 18:02:23 -0500362#if defined(CONFIG_CMD_NET)
Macpaul Linf3c615b2011-04-26 16:16:45 +0000363 else if (strcmp(argv[1], "bootfile") == 0) {
364 copy_filename(BootFile, argv[2], sizeof(BootFile));
wdenka68d3ed2002-10-11 08:38:32 +0000365 return 0;
366 }
Jon Loeliger90253172007-07-10 11:02:44 -0500367#endif
wdenka68d3ed2002-10-11 08:38:32 +0000368 return 0;
369}
370
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200371int setenv(const char *varname, const char *varvalue)
wdenka68d3ed2002-10-11 08:38:32 +0000372{
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200373 const char * const argv[4] = { "setenv", varname, varvalue, NULL };
374
Igor Grinbergd09b1782011-11-07 01:13:59 +0000375 if (varvalue == NULL || varvalue[0] == '\0')
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200376 return _do_env_set(0, 2, (char * const *)argv);
Jeffrey Mann9ffd4512007-04-23 14:00:11 +0200377 else
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200378 return _do_env_set(0, 3, (char * const *)argv);
wdenka68d3ed2002-10-11 08:38:32 +0000379}
380
Simon Glassd67f10c2011-10-24 17:59:59 +0000381/**
382 * Set an environment variable to an integer value
383 *
384 * @param varname Environmet variable to set
385 * @param value Value to set it to
386 * @return 0 if ok, 1 on error
387 */
388int setenv_ulong(const char *varname, ulong value)
389{
390 /* TODO: this should be unsigned */
391 char *str = simple_itoa(value);
392
393 return setenv(varname, str);
394}
395
396/**
397 * Set an environment variable to an address in hex
398 *
399 * @param varname Environmet variable to set
400 * @param addr Value to set it to
401 * @return 0 if ok, 1 on error
402 */
403int setenv_addr(const char *varname, const void *addr)
404{
405 char str[17];
406
Simon Glass79afc882011-11-04 06:42:36 +0000407 sprintf(str, "%lx", (uintptr_t)addr);
Simon Glassd67f10c2011-10-24 17:59:59 +0000408 return setenv(varname, str);
409}
410
Macpaul Linf3c615b2011-04-26 16:16:45 +0000411int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000412{
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200413 if (argc < 2)
414 return cmd_usage(cmdtp);
wdenka68d3ed2002-10-11 08:38:32 +0000415
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200416 return _do_env_set(flag, argc, argv);
wdenka68d3ed2002-10-11 08:38:32 +0000417}
418
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200419/*
wdenka68d3ed2002-10-11 08:38:32 +0000420 * Prompt for environment variable
421 */
Jon Loeligerc76fe472007-07-08 18:02:23 -0500422#if defined(CONFIG_CMD_ASKENV)
Macpaul Linf3c615b2011-04-26 16:16:45 +0000423int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000424{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200425 char message[CONFIG_SYS_CBSIZE];
426 int size = CONFIG_SYS_CBSIZE - 1;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200427 int i, len, pos;
wdenka68d3ed2002-10-11 08:38:32 +0000428 char *local_args[4];
429
430 local_args[0] = argv[0];
431 local_args[1] = argv[1];
432 local_args[2] = NULL;
433 local_args[3] = NULL;
434
wdenka68d3ed2002-10-11 08:38:32 +0000435 /* Check the syntax */
436 switch (argc) {
437 case 1:
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200438 return cmd_usage(cmdtp);
wdenka68d3ed2002-10-11 08:38:32 +0000439
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200440 case 2: /* env_ask envname */
441 sprintf(message, "Please enter '%s':", argv[1]);
wdenka68d3ed2002-10-11 08:38:32 +0000442 break;
443
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200444 case 3: /* env_ask envname size */
445 sprintf(message, "Please enter '%s':", argv[1]);
446 size = simple_strtoul(argv[2], NULL, 10);
wdenka68d3ed2002-10-11 08:38:32 +0000447 break;
448
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200449 default: /* env_ask envname message1 ... messagen size */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000450 for (i = 2, pos = 0; i < argc - 1; i++) {
451 if (pos)
wdenka68d3ed2002-10-11 08:38:32 +0000452 message[pos++] = ' ';
Macpaul Linf3c615b2011-04-26 16:16:45 +0000453
Igor Grinbergd09b1782011-11-07 01:13:59 +0000454 strcpy(message + pos, argv[i]);
wdenka68d3ed2002-10-11 08:38:32 +0000455 pos += strlen(argv[i]);
456 }
Igor Grinbergd09b1782011-11-07 01:13:59 +0000457
wdenka68d3ed2002-10-11 08:38:32 +0000458 message[pos] = '\0';
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200459 size = simple_strtoul(argv[argc - 1], NULL, 10);
wdenka68d3ed2002-10-11 08:38:32 +0000460 break;
461 }
462
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200463 if (size >= CONFIG_SYS_CBSIZE)
464 size = CONFIG_SYS_CBSIZE - 1;
wdenka68d3ed2002-10-11 08:38:32 +0000465
466 if (size <= 0)
467 return 1;
468
469 /* prompt for input */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200470 len = readline(message);
wdenka68d3ed2002-10-11 08:38:32 +0000471
472 if (size < len)
473 console_buffer[size] = '\0';
474
475 len = 2;
476 if (console_buffer[0] != '\0') {
477 local_args[2] = console_buffer;
478 len = 3;
479 }
480
481 /* Continue calling setenv code */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200482 return _do_env_set(flag, len, local_args);
wdenka68d3ed2002-10-11 08:38:32 +0000483}
Jon Loeliger90253172007-07-10 11:02:44 -0500484#endif
wdenka68d3ed2002-10-11 08:38:32 +0000485
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200486/*
Peter Tyser246c6922009-10-25 15:12:56 -0500487 * Interactively edit an environment variable
488 */
489#if defined(CONFIG_CMD_EDITENV)
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200490int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Peter Tyser246c6922009-10-25 15:12:56 -0500491{
492 char buffer[CONFIG_SYS_CBSIZE];
493 char *init_val;
Peter Tyser246c6922009-10-25 15:12:56 -0500494
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200495 if (argc < 2)
496 return cmd_usage(cmdtp);
Peter Tyser246c6922009-10-25 15:12:56 -0500497
498 /* Set read buffer to initial value or empty sting */
499 init_val = getenv(argv[1]);
500 if (init_val)
Marek Vasut7fcd9bb2011-09-26 02:26:03 +0200501 sprintf(buffer, "%s", init_val);
Peter Tyser246c6922009-10-25 15:12:56 -0500502 else
503 buffer[0] = '\0';
504
505 readline_into_buffer("edit: ", buffer);
506
507 return setenv(argv[1], buffer);
508}
509#endif /* CONFIG_CMD_EDITENV */
510
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200511/*
wdenka68d3ed2002-10-11 08:38:32 +0000512 * Look up variable from environment,
513 * return address of storage for that variable,
514 * or NULL if not found
515 */
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200516char *getenv(const char *name)
wdenka68d3ed2002-10-11 08:38:32 +0000517{
Igor Grinbergd09b1782011-11-07 01:13:59 +0000518 if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200519 ENTRY e, *ep;
wdenka68d3ed2002-10-11 08:38:32 +0000520
Wolfgang Denk91a76752010-07-24 20:22:02 +0200521 WATCHDOG_RESET();
wdenk2a3cb022002-11-05 21:01:48 +0000522
Igor Grinbergd09b1782011-11-07 01:13:59 +0000523 e.key = name;
524 e.data = NULL;
Mike Frysinger2eb15732010-12-08 06:26:04 -0500525 hsearch_r(e, FIND, &ep, &env_htab);
wdenka68d3ed2002-10-11 08:38:32 +0000526
Macpaul Linf3c615b2011-04-26 16:16:45 +0000527 return ep ? ep->data : NULL;
wdenka68d3ed2002-10-11 08:38:32 +0000528 }
529
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200530 /* restricted capabilities before import */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200531 if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0)
532 return (char *)(gd->env_buf);
533
534 return NULL;
wdenka68d3ed2002-10-11 08:38:32 +0000535}
536
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200537/*
538 * Look up variable from environment for restricted C runtime env.
539 */
Wolfgang Denk84b5e802011-07-29 14:42:18 +0200540int getenv_f(const char *name, char *buf, unsigned len)
wdenka68d3ed2002-10-11 08:38:32 +0000541{
542 int i, nxt;
543
Igor Grinbergd09b1782011-11-07 01:13:59 +0000544 for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
wdenka68d3ed2002-10-11 08:38:32 +0000545 int val, n;
546
Macpaul Linf3c615b2011-04-26 16:16:45 +0000547 for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) {
548 if (nxt >= CONFIG_ENV_SIZE)
549 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000550 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000551
552 val = envmatch((uchar *)name, i);
553 if (val < 0)
wdenka68d3ed2002-10-11 08:38:32 +0000554 continue;
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200555
wdenka68d3ed2002-10-11 08:38:32 +0000556 /* found; copy out */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000557 for (n = 0; n < len; ++n, ++buf) {
Igor Grinbergd09b1782011-11-07 01:13:59 +0000558 *buf = env_get_char(val++);
559 if (*buf == '\0')
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200560 return n;
561 }
562
563 if (n)
564 *--buf = '\0';
565
Wolfgang Denka02a8842011-05-04 10:29:49 +0000566 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
567 len, name);
Wolfgang Denk9ed4a952010-07-24 22:16:20 +0200568
569 return n;
wdenka68d3ed2002-10-11 08:38:32 +0000570 }
Igor Grinbergd09b1782011-11-07 01:13:59 +0000571
Macpaul Linf3c615b2011-04-26 16:16:45 +0000572 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000573}
574
Simon Glass4a9b4132011-10-14 13:25:18 +0000575/**
576 * Decode the integer value of an environment variable and return it.
577 *
578 * @param name Name of environemnt variable
579 * @param base Number base to use (normally 10, or 16 for hex)
580 * @param default_val Default value to return if the variable is not
581 * found
582 * @return the decoded value, or default_val if not found
583 */
584ulong getenv_ulong(const char *name, int base, ulong default_val)
585{
586 /*
587 * We can use getenv() here, even before relocation, since the
588 * environment variable value is an integer and thus short.
589 */
590 const char *str = getenv(name);
591
592 return str ? simple_strtoul(str, NULL, base) : default_val;
593}
594
Mike Frysingerbdab39d2009-01-28 19:08:14 -0500595#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
Macpaul Linf3c615b2011-04-26 16:16:45 +0000596int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenka68d3ed2002-10-11 08:38:32 +0000597{
Macpaul Linf3c615b2011-04-26 16:16:45 +0000598 printf("Saving Environment to %s...\n", env_name_spec);
wdenka68d3ed2002-10-11 08:38:32 +0000599
Macpaul Linf3c615b2011-04-26 16:16:45 +0000600 return saveenv() ? 1 : 0;
wdenka68d3ed2002-10-11 08:38:32 +0000601}
wdenk8bde7f72003-06-27 21:31:46 +0000602
Mike Frysingerba69dc22008-12-30 02:59:25 -0500603U_BOOT_CMD(
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200604 saveenv, 1, 0, do_env_save,
Peter Tyser2fb26042009-01-27 18:03:12 -0600605 "save environment variables to persistent storage",
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200606 ""
Mike Frysingerba69dc22008-12-30 02:59:25 -0500607);
wdenka68d3ed2002-10-11 08:38:32 +0000608#endif
609
610
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200611/*
wdenka68d3ed2002-10-11 08:38:32 +0000612 * Match a name / name=value pair
613 *
614 * s1 is either a simple 'name', or a 'name=value' pair.
615 * i2 is the environment index for a 'name2=value2' pair.
Igor Grinbergd09b1782011-11-07 01:13:59 +0000616 * If the names match, return the index for the value2, else -1.
wdenka68d3ed2002-10-11 08:38:32 +0000617 */
Macpaul Linf3c615b2011-04-26 16:16:45 +0000618int envmatch(uchar *s1, int i2)
wdenka68d3ed2002-10-11 08:38:32 +0000619{
wdenka68d3ed2002-10-11 08:38:32 +0000620 while (*s1 == env_get_char(i2++))
621 if (*s1++ == '=')
Macpaul Linf3c615b2011-04-26 16:16:45 +0000622 return i2;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000623
wdenka68d3ed2002-10-11 08:38:32 +0000624 if (*s1 == '\0' && env_get_char(i2-1) == '=')
Macpaul Linf3c615b2011-04-26 16:16:45 +0000625 return i2;
Igor Grinbergd09b1782011-11-07 01:13:59 +0000626
Macpaul Linf3c615b2011-04-26 16:16:45 +0000627 return -1;
wdenka68d3ed2002-10-11 08:38:32 +0000628}
wdenk8bde7f72003-06-27 21:31:46 +0000629
Igor Grinbergd09b1782011-11-07 01:13:59 +0000630static int do_env_default(cmd_tbl_t *cmdtp, int flag,
631 int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200632{
Igor Grinbergd09b1782011-11-07 01:13:59 +0000633 if (argc != 2 || strcmp(argv[1], "-f") != 0)
Thomas Weber0d302af2010-11-25 08:05:28 +0100634 return cmd_usage(cmdtp);
Macpaul Linf3c615b2011-04-26 16:16:45 +0000635
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200636 set_default_env("## Resetting to default environment\n");
637 return 0;
638}
wdenk8bde7f72003-06-27 21:31:46 +0000639
Igor Grinbergd09b1782011-11-07 01:13:59 +0000640static int do_env_delete(cmd_tbl_t *cmdtp, int flag,
641 int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200642{
643 printf("Not implemented yet\n");
644 return 0;
645}
646
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500647#ifdef CONFIG_CMD_EXPORTENV
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200648/*
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100649 * env export [-t | -b | -c] [-s size] addr [var ...]
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200650 * -t: export as text format; if size is given, data will be
651 * padded with '\0' bytes; if not, one terminating '\0'
652 * will be added (which is included in the "filesize"
653 * setting so you can for exmple copy this to flash and
654 * keep the termination).
655 * -b: export as binary format (name=value pairs separated by
656 * '\0', list end marked by double "\0\0")
657 * -c: export as checksum protected environment format as
658 * used for example by "saveenv" command
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100659 * -s size:
660 * size of output buffer
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200661 * addr: memory address where environment gets stored
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100662 * var... List of variable names that get included into the
663 * export. Without arguments, the whole environment gets
664 * exported.
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200665 *
666 * With "-c" and size is NOT given, then the export command will
667 * format the data as currently used for the persistent storage,
668 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
669 * prepend a valid CRC32 checksum and, in case of resundant
670 * environment, a "current" redundancy flag. If size is given, this
671 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
672 * checksum and redundancy flag will be inserted.
673 *
674 * With "-b" and "-t", always only the real data (including a
675 * terminating '\0' byte) will be written; here the optional size
676 * argument will be used to make sure not to overflow the user
677 * provided buffer; the command will abort if the size is not
678 * sufficient. Any remainign space will be '\0' padded.
679 *
680 * On successful return, the variable "filesize" will be set.
681 * Note that filesize includes the trailing/terminating '\0' byte(s).
682 *
683 * Usage szenario: create a text snapshot/backup of the current settings:
684 *
685 * => env export -t 100000
686 * => era ${backup_addr} +${filesize}
687 * => cp.b 100000 ${backup_addr} ${filesize}
688 *
689 * Re-import this snapshot, deleting all other settings:
690 *
691 * => env import -d -t ${backup_addr}
692 */
Igor Grinbergd09b1782011-11-07 01:13:59 +0000693static int do_env_export(cmd_tbl_t *cmdtp, int flag,
694 int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200695{
696 char buf[32];
697 char *addr, *cmd, *res;
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100698 size_t size = 0;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200699 ssize_t len;
700 env_t *envp;
701 char sep = '\n';
702 int chk = 0;
703 int fmt = 0;
704
705 cmd = *argv;
706
707 while (--argc > 0 && **++argv == '-') {
708 char *arg = *argv;
709 while (*++arg) {
710 switch (*arg) {
711 case 'b': /* raw binary format */
712 if (fmt++)
713 goto sep_err;
714 sep = '\0';
715 break;
716 case 'c': /* external checksum format */
717 if (fmt++)
718 goto sep_err;
719 sep = '\0';
720 chk = 1;
721 break;
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100722 case 's': /* size given */
723 if (--argc <= 0)
724 return cmd_usage(cmdtp);
725 size = simple_strtoul(*++argv, NULL, 16);
726 goto NXTARG;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200727 case 't': /* text format */
728 if (fmt++)
729 goto sep_err;
730 sep = '\n';
731 break;
732 default:
Thomas Weber0d302af2010-11-25 08:05:28 +0100733 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200734 }
735 }
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100736NXTARG: ;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200737 }
738
Macpaul Linf3c615b2011-04-26 16:16:45 +0000739 if (argc < 1)
Thomas Weber0d302af2010-11-25 08:05:28 +0100740 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200741
742 addr = (char *)simple_strtoul(argv[0], NULL, 16);
743
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100744 if (size)
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200745 memset(addr, '\0', size);
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100746
747 argc--;
748 argv++;
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200749
750 if (sep) { /* export as text file */
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100751 len = hexport_r(&env_htab, sep, &addr, size, argc, argv);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200752 if (len < 0) {
Igor Grinbergd09b1782011-11-07 01:13:59 +0000753 error("Cannot export environment: errno = %d\n", errno);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200754 return 1;
755 }
Andreas Bießmann8c3aff52011-02-09 15:10:29 +0100756 sprintf(buf, "%zX", (size_t)len);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200757 setenv("filesize", buf);
758
759 return 0;
760 }
761
762 envp = (env_t *)addr;
763
764 if (chk) /* export as checksum protected block */
765 res = (char *)envp->data;
766 else /* export as raw binary data */
767 res = addr;
768
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100769 len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, argc, argv);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200770 if (len < 0) {
Igor Grinbergd09b1782011-11-07 01:13:59 +0000771 error("Cannot export environment: errno = %d\n", errno);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200772 return 1;
773 }
774
775 if (chk) {
Igor Grinbergd09b1782011-11-07 01:13:59 +0000776 envp->crc = crc32(0, envp->data, ENV_SIZE);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200777#ifdef CONFIG_ENV_ADDR_REDUND
778 envp->flags = ACTIVE_FLAG;
779#endif
780 }
Macpaul Linf3c615b2011-04-26 16:16:45 +0000781 sprintf(buf, "%zX", (size_t)(len + offsetof(env_t, data)));
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200782 setenv("filesize", buf);
783
784 return 0;
785
786sep_err:
Igor Grinbergd09b1782011-11-07 01:13:59 +0000787 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200788 return 1;
789}
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500790#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200791
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500792#ifdef CONFIG_CMD_IMPORTENV
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200793/*
794 * env import [-d] [-t | -b | -c] addr [size]
795 * -d: delete existing environment before importing;
796 * otherwise overwrite / append to existion definitions
797 * -t: assume text format; either "size" must be given or the
798 * text data must be '\0' terminated
799 * -b: assume binary format ('\0' separated, "\0\0" terminated)
800 * -c: assume checksum protected environment format
801 * addr: memory address to read from
802 * size: length of input data; if missing, proper '\0'
803 * termination is mandatory
804 */
Igor Grinbergd09b1782011-11-07 01:13:59 +0000805static int do_env_import(cmd_tbl_t *cmdtp, int flag,
806 int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200807{
808 char *cmd, *addr;
809 char sep = '\n';
810 int chk = 0;
811 int fmt = 0;
812 int del = 0;
813 size_t size;
814
815 cmd = *argv;
816
817 while (--argc > 0 && **++argv == '-') {
818 char *arg = *argv;
819 while (*++arg) {
820 switch (*arg) {
821 case 'b': /* raw binary format */
822 if (fmt++)
823 goto sep_err;
824 sep = '\0';
825 break;
826 case 'c': /* external checksum format */
827 if (fmt++)
828 goto sep_err;
829 sep = '\0';
830 chk = 1;
831 break;
832 case 't': /* text format */
833 if (fmt++)
834 goto sep_err;
835 sep = '\n';
836 break;
837 case 'd':
838 del = 1;
839 break;
840 default:
Thomas Weber0d302af2010-11-25 08:05:28 +0100841 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200842 }
843 }
844 }
845
Macpaul Linf3c615b2011-04-26 16:16:45 +0000846 if (argc < 1)
Thomas Weber0d302af2010-11-25 08:05:28 +0100847 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200848
849 if (!fmt)
850 printf("## Warning: defaulting to text format\n");
851
852 addr = (char *)simple_strtoul(argv[0], NULL, 16);
853
854 if (argc == 2) {
855 size = simple_strtoul(argv[1], NULL, 16);
856 } else {
857 char *s = addr;
858
859 size = 0;
860
861 while (size < MAX_ENV_SIZE) {
862 if ((*s == sep) && (*(s+1) == '\0'))
863 break;
864 ++s;
865 ++size;
866 }
867 if (size == MAX_ENV_SIZE) {
868 printf("## Warning: Input data exceeds %d bytes"
869 " - truncated\n", MAX_ENV_SIZE);
870 }
871 ++size;
Simon Glass79afc882011-11-04 06:42:36 +0000872 printf("## Info: input data size = %zu = 0x%zX\n", size, size);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200873 }
874
875 if (chk) {
876 uint32_t crc;
877 env_t *ep = (env_t *)addr;
878
879 size -= offsetof(env_t, data);
880 memcpy(&crc, &ep->crc, sizeof(crc));
881
882 if (crc32(0, ep->data, size) != crc) {
883 puts("## Error: bad CRC, import failed\n");
884 return 1;
885 }
886 addr = (char *)ep->data;
887 }
888
Mike Frysinger2eb15732010-12-08 06:26:04 -0500889 if (himport_r(&env_htab, addr, size, sep, del ? 0 : H_NOCLEAR) == 0) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200890 error("Environment import failed: errno = %d\n", errno);
891 return 1;
892 }
893 gd->flags |= GD_FLG_ENV_READY;
894
895 return 0;
896
897sep_err:
898 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
899 cmd);
900 return 1;
901}
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500902#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200903
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200904/*
905 * New command line interface: "env" command with subcommands
906 */
907static cmd_tbl_t cmd_env_sub[] = {
908#if defined(CONFIG_CMD_ASKENV)
909 U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""),
910#endif
911 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""),
912 U_BOOT_CMD_MKENT(delete, 2, 0, do_env_delete, "", ""),
913#if defined(CONFIG_CMD_EDITENV)
914 U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
915#endif
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500916#if defined(CONFIG_CMD_EXPORTENV)
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200917 U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500918#endif
Kim Phillipsa000b792011-04-05 07:15:14 +0000919#if defined(CONFIG_CMD_GREPENV)
920 U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""),
921#endif
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500922#if defined(CONFIG_CMD_IMPORTENV)
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200923 U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
Mike Frysinger0c79cda2010-12-26 23:09:45 -0500924#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200925 U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
926#if defined(CONFIG_CMD_RUN)
927 U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),
928#endif
929#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
930 U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""),
931#endif
932 U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""),
933};
934
Wolfgang Denk2e5167c2010-10-28 20:00:11 +0200935#if defined(CONFIG_NEEDS_MANUAL_RELOC)
Heiko Schocher60f7da12010-10-05 14:17:00 +0200936void env_reloc(void)
937{
938 fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
939}
940#endif
941
Macpaul Linf3c615b2011-04-26 16:16:45 +0000942static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200943{
944 cmd_tbl_t *cp;
945
Thomas Weber5904da02010-11-24 13:07:52 +0100946 if (argc < 2)
947 return cmd_usage(cmdtp);
948
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200949 /* drop initial "env" arg */
950 argc--;
951 argv++;
952
953 cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
954
955 if (cp)
956 return cp->cmd(cmdtp, flag, argc, argv);
957
Thomas Weber0d302af2010-11-25 08:05:28 +0100958 return cmd_usage(cmdtp);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200959}
960
961U_BOOT_CMD(
962 env, CONFIG_SYS_MAXARGS, 1, do_env,
963 "environment handling commands",
964#if defined(CONFIG_CMD_ASKENV)
965 "ask name [message] [size] - ask for environment variable\nenv "
966#endif
967 "default -f - reset default environment\n"
968#if defined(CONFIG_CMD_EDITENV)
969 "env edit name - edit environment variable\n"
970#endif
Wolfgang Denk37f2fe72011-11-06 22:49:44 +0100971 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
Kim Phillipsa000b792011-04-05 07:15:14 +0000972#if defined(CONFIG_CMD_GREPENV)
973 "env grep string [...] - search environment\n"
974#endif
975 "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200976 "env print [name ...] - print environment\n"
977#if defined(CONFIG_CMD_RUN)
978 "env run var [...] - run commands in an environment variable\n"
979#endif
980 "env save - save environment\n"
981 "env set [-f] name [arg ...]\n"
982);
983
984/*
985 * Old command line interface, kept for compatibility
986 */
wdenk8bde7f72003-06-27 21:31:46 +0000987
Peter Tyser246c6922009-10-25 15:12:56 -0500988#if defined(CONFIG_CMD_EDITENV)
Mike Frysinger722b0612010-10-20 03:52:39 -0400989U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200990 editenv, 2, 0, do_env_edit,
Peter Tyser246c6922009-10-25 15:12:56 -0500991 "edit environment variable",
992 "name\n"
Mike Frysinger722b0612010-10-20 03:52:39 -0400993 " - edit environment variable 'name'",
994 var_complete
Peter Tyser246c6922009-10-25 15:12:56 -0500995);
996#endif
997
Mike Frysinger722b0612010-10-20 03:52:39 -0400998U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200999 printenv, CONFIG_SYS_MAXARGS, 1, do_env_print,
Peter Tyser2fb26042009-01-27 18:03:12 -06001000 "print environment variables",
wdenk8bde7f72003-06-27 21:31:46 +00001001 "\n - print values of all environment variables\n"
1002 "printenv name ...\n"
Mike Frysinger722b0612010-10-20 03:52:39 -04001003 " - print value of environment variable 'name'",
1004 var_complete
wdenk8bde7f72003-06-27 21:31:46 +00001005);
1006
Kim Phillipsa000b792011-04-05 07:15:14 +00001007#ifdef CONFIG_CMD_GREPENV
1008U_BOOT_CMD_COMPLETE(
1009 grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep,
1010 "search environment variables",
1011 "string ...\n"
1012 " - list environment name=value pairs matching 'string'",
1013 var_complete
1014);
1015#endif
1016
Mike Frysinger722b0612010-10-20 03:52:39 -04001017U_BOOT_CMD_COMPLETE(
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001018 setenv, CONFIG_SYS_MAXARGS, 0, do_env_set,
Peter Tyser2fb26042009-01-27 18:03:12 -06001019 "set environment variables",
wdenk8bde7f72003-06-27 21:31:46 +00001020 "name value ...\n"
1021 " - set environment variable 'name' to 'value ...'\n"
1022 "setenv name\n"
Mike Frysinger722b0612010-10-20 03:52:39 -04001023 " - delete environment variable 'name'",
1024 var_complete
wdenk8bde7f72003-06-27 21:31:46 +00001025);
1026
Jon Loeligerc76fe472007-07-08 18:02:23 -05001027#if defined(CONFIG_CMD_ASKENV)
wdenk8bde7f72003-06-27 21:31:46 +00001028
wdenk0d498392003-07-01 21:06:45 +00001029U_BOOT_CMD(
Wolfgang Denkea882ba2010-06-20 23:33:59 +02001030 askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask,
Peter Tyser2fb26042009-01-27 18:03:12 -06001031 "get environment variables from stdin",
wdenk8bde7f72003-06-27 21:31:46 +00001032 "name [message] [size]\n"
1033 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1034 "askenv name\n"
1035 " - get environment variable 'name' from stdin\n"
1036 "askenv name size\n"
1037 " - get environment variable 'name' from stdin (max 'size' chars)\n"
1038 "askenv name [message] size\n"
1039 " - display 'message' string and get environment variable 'name'"
Wolfgang Denka89c33d2009-05-24 17:06:54 +02001040 "from stdin (max 'size' chars)"
wdenk8bde7f72003-06-27 21:31:46 +00001041);
Jon Loeliger90253172007-07-10 11:02:44 -05001042#endif
wdenk8bde7f72003-06-27 21:31:46 +00001043
Jon Loeligerc76fe472007-07-08 18:02:23 -05001044#if defined(CONFIG_CMD_RUN)
Mike Frysinger722b0612010-10-20 03:52:39 -04001045U_BOOT_CMD_COMPLETE(
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001046 run, CONFIG_SYS_MAXARGS, 1, do_run,
Peter Tyser2fb26042009-01-27 18:03:12 -06001047 "run commands in an environment variable",
wdenk8bde7f72003-06-27 21:31:46 +00001048 "var [...]\n"
Mike Frysinger722b0612010-10-20 03:52:39 -04001049 " - run the commands in the environment variable(s) 'var'",
1050 var_complete
wdenk8bde7f72003-06-27 21:31:46 +00001051);
Jon Loeliger90253172007-07-10 11:02:44 -05001052#endif