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,
31 #if defined(CFG_ENV_IS_IN_FLASH) /* Environment is in Flash */
34 #include <environment.h>
35 #include <cmd_nvedit.h>
36 #include <linux/stddef.h>
39 #if ((CONFIG_COMMANDS&(CFG_CMD_ENV|CFG_CMD_FLASH)) == (CFG_CMD_ENV|CFG_CMD_FLASH))
41 #elif defined(CFG_ENV_ADDR_REDUND)
42 #error Cannot use CFG_ENV_ADDR_REDUND without CFG_CMD_ENV & CFG_CMD_FLASH
45 #if defined(CFG_ENV_SIZE_REDUND) && (CFG_ENV_SIZE_REDUND < CFG_ENV_SIZE)
46 #error CFG_ENV_SIZE_REDUND should not be less then CFG_ENV_SIZE
50 # ifdef CFG_ENV_ADDR_REDUND
51 #error CFG_ENV_ADDR_REDUND is not implemented for CONFIG_INFERNO
55 char * env_name_spec
= "Flash";
57 #ifdef ENV_IS_EMBEDDED
59 extern uchar environment
[];
60 env_t
*env_ptr
= (env_t
*)(&environment
[0]);
63 /* static env_t *flash_addr = (env_t *)(&environment[0]);-broken on ARM-wd-*/
64 static env_t
*flash_addr
= (env_t
*)CFG_ENV_ADDR
;
67 #else /* ! ENV_IS_EMBEDDED */
69 env_t
*env_ptr
= (env_t
*)CFG_ENV_ADDR
;
71 static env_t
*flash_addr
= (env_t
*)CFG_ENV_ADDR
;
74 #endif /* ENV_IS_EMBEDDED */
76 #ifdef CFG_ENV_ADDR_REDUND
77 static env_t
*flash_addr_new
= (env_t
*)CFG_ENV_ADDR_REDUND
;
79 /* CFG_ENV_ADDR is supposed to be on sector boundary */
80 static ulong end_addr
= CFG_ENV_ADDR
+ CFG_ENV_SECT_SIZE
- 1;
81 static ulong end_addr_new
= CFG_ENV_ADDR_REDUND
+ CFG_ENV_SECT_SIZE
- 1;
83 static uchar active_flag
= 1;
84 static uchar obsolete_flag
= 0;
87 extern uchar default_environment
[];
88 extern int default_environment_size
;
91 uchar
env_get_char_spec (int index
)
93 DECLARE_GLOBAL_DATA_PTR
;
95 return ( *((uchar
*)(gd
->env_addr
+ index
)) );
98 #ifdef CFG_ENV_ADDR_REDUND
102 DECLARE_GLOBAL_DATA_PTR
;
105 (crc32(0, flash_addr
->data
, ENV_SIZE
) == flash_addr
->crc
);
107 (crc32(0, flash_addr_new
->data
, ENV_SIZE
) == flash_addr_new
->crc
);
109 uchar flag1
= flash_addr
->flags
;
110 uchar flag2
= flash_addr_new
->flags
;
112 ulong addr_default
= (ulong
)&default_environment
[0];
113 ulong addr1
= (ulong
)&(flash_addr
->data
);
114 ulong addr2
= (ulong
)&(flash_addr_new
->data
);
116 if (crc1_ok
&& ! crc2_ok
)
118 gd
->env_addr
= addr1
;
121 else if (! crc1_ok
&& crc2_ok
)
123 gd
->env_addr
= addr2
;
126 else if (! crc1_ok
&& ! crc2_ok
)
128 gd
->env_addr
= addr_default
;
131 else if (flag1
== active_flag
&& flag2
== obsolete_flag
)
133 gd
->env_addr
= addr1
;
136 else if (flag1
== obsolete_flag
&& flag2
== active_flag
)
138 gd
->env_addr
= addr2
;
141 else if (flag1
== flag2
)
143 gd
->env_addr
= addr1
;
146 else if (flag1
== 0xFF)
148 gd
->env_addr
= addr1
;
151 else if (flag2
== 0xFF)
153 gd
->env_addr
= addr2
;
163 char *saved_data
= NULL
;
165 #if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
169 debug ("Protect off %08lX ... %08lX\n",
170 (ulong
)flash_addr
, end_addr
);
172 if (flash_sect_protect (0, (ulong
)flash_addr
, end_addr
)) {
176 debug ("Protect off %08lX ... %08lX\n",
177 (ulong
)flash_addr_new
, end_addr_new
);
179 if (flash_sect_protect (0, (ulong
)flash_addr_new
, end_addr_new
)) {
183 #if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
184 up_data
= (end_addr_new
+ 1 - ((long)flash_addr_new
+ CFG_ENV_SIZE
));
185 debug ("Data to save 0x%x\n", up_data
);
187 if ((saved_data
= malloc(up_data
)) == NULL
) {
188 printf("Unable to save the rest of sector (%ld)\n",
193 (void *)((long)flash_addr_new
+ CFG_ENV_SIZE
), up_data
);
194 debug ("Data (start 0x%x, len 0x%x) saved at 0x%x\n",
195 (long)flash_addr_new
+ CFG_ENV_SIZE
,
196 up_data
, saved_data
);
199 puts ("Erasing Flash...");
200 debug (" %08lX ... %08lX ...",
201 (ulong
)flash_addr_new
, end_addr_new
);
203 if (flash_sect_erase ((ulong
)flash_addr_new
, end_addr_new
)) {
207 puts ("Writing to Flash... ");
208 debug (" %08lX ... %08lX ...",
209 (ulong
)&(flash_addr_new
->data
),
210 sizeof(env_ptr
->data
)+(ulong
)&(flash_addr_new
->data
));
211 if (flash_write(env_ptr
->data
,
212 (ulong
)&(flash_addr_new
->data
),
213 sizeof(env_ptr
->data
)) ||
215 flash_write((char *)&(env_ptr
->crc
),
216 (ulong
)&(flash_addr_new
->crc
),
217 sizeof(env_ptr
->crc
)) ||
219 flash_write((char *)&obsolete_flag
,
220 (ulong
)&(flash_addr
->flags
),
221 sizeof(flash_addr
->flags
)) ||
223 flash_write((char *)&active_flag
,
224 (ulong
)&(flash_addr_new
->flags
),
225 sizeof(flash_addr_new
->flags
)))
232 #if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
233 if (up_data
) { /* restore the rest of sector */
234 debug ("Restoring the rest of data to 0x%x len 0x%x\n",
235 (long)flash_addr_new
+ CFG_ENV_SIZE
, up_data
);
236 if (flash_write(saved_data
,
237 (long)flash_addr_new
+ CFG_ENV_SIZE
,
245 env_t
* etmp
= flash_addr
;
246 ulong ltmp
= end_addr
;
248 flash_addr
= flash_addr_new
;
249 flash_addr_new
= etmp
;
251 end_addr
= end_addr_new
;
260 /* try to re-protect */
261 (void) flash_sect_protect (1, (ulong
)flash_addr
, end_addr
);
262 (void) flash_sect_protect (1, (ulong
)flash_addr_new
, end_addr_new
);
266 #endif /* CMD_SAVEENV */
268 #else /* ! CFG_ENV_ADDR_REDUND */
272 DECLARE_GLOBAL_DATA_PTR
;
274 if (crc32(0, env_ptr
->data
, ENV_SIZE
) == env_ptr
->crc
) {
275 gd
->env_addr
= (ulong
)&(env_ptr
->data
);
278 gd
->env_addr
= (ulong
)&default_environment
[0];
291 ulong flash_sect_addr
;
292 #if defined(CFG_ENV_SECT_SIZE) && (CFG_ENV_SECT_SIZE > CFG_ENV_SIZE)
294 uchar env_buffer
[CFG_ENV_SECT_SIZE
];
296 uchar
*env_buffer
= (char *)env_ptr
;
297 #endif /* CFG_ENV_SECT_SIZE */
300 #if defined(CFG_ENV_SECT_SIZE) && (CFG_ENV_SECT_SIZE > CFG_ENV_SIZE)
302 flash_offset
= ((ulong
)flash_addr
) & (CFG_ENV_SECT_SIZE
-1);
303 flash_sect_addr
= ((ulong
)flash_addr
) & ~(CFG_ENV_SECT_SIZE
-1);
305 debug ( "copy old content: "
306 "sect_addr: %08lX env_addr: %08lX offset: %08lX\n",
307 flash_sect_addr
, (ulong
)flash_addr
, flash_offset
);
309 /* copy old contents to temporary buffer */
310 memcpy (env_buffer
, (void *)flash_sect_addr
, CFG_ENV_SECT_SIZE
);
312 /* copy current environment to temporary buffer */
313 memcpy ((uchar
*)((unsigned long)env_buffer
+ flash_offset
),
317 len
= CFG_ENV_SECT_SIZE
;
319 flash_sect_addr
= (ulong
)flash_addr
;
321 #endif /* CFG_ENV_SECT_SIZE */
323 #ifndef CONFIG_INFERNO
324 end_addr
= flash_sect_addr
+ len
- 1;
326 /* this is the last sector, and the size is hardcoded here */
327 /* otherwise we will get stack problems on loading 128 KB environment */
328 end_addr
= flash_sect_addr
+ 0x20000 - 1;
331 debug ("Protect off %08lX ... %08lX\n",
332 (ulong
)flash_sect_addr
, end_addr
);
334 if (flash_sect_protect (0, flash_sect_addr
, end_addr
))
337 puts ("Erasing Flash...");
338 if (flash_sect_erase (flash_sect_addr
, end_addr
))
341 puts ("Writing to Flash... ");
342 rc
= flash_write(env_buffer
, flash_sect_addr
, len
);
350 /* try to re-protect */
351 (void) flash_sect_protect (1, flash_sect_addr
, end_addr
);
355 #endif /* CMD_SAVEENV */
357 #endif /* CFG_ENV_ADDR_REDUND */
359 void env_relocate_spec (void)
361 #if !defined(ENV_IS_EMBEDDED) || defined(CFG_ENV_ADDR_REDUND)
362 #ifdef CFG_ENV_ADDR_REDUND
363 DECLARE_GLOBAL_DATA_PTR
;
365 if (gd
->env_addr
!= (ulong
)&(flash_addr
->data
))
367 env_t
* etmp
= flash_addr
;
368 ulong ltmp
= end_addr
;
370 flash_addr
= flash_addr_new
;
371 flash_addr_new
= etmp
;
373 end_addr
= end_addr_new
;
377 if (flash_addr_new
->flags
!= obsolete_flag
&&
378 crc32(0, flash_addr_new
->data
, ENV_SIZE
) ==
382 flash_sect_protect (0, (ulong
)flash_addr_new
, end_addr_new
);
383 flash_write((char *)&obsolete_flag
,
384 (ulong
)&(flash_addr_new
->flags
),
385 sizeof(flash_addr_new
->flags
));
386 flash_sect_protect (1, (ulong
)flash_addr_new
, end_addr_new
);
389 if (flash_addr
->flags
!= active_flag
&&
390 (flash_addr
->flags
& active_flag
) == active_flag
)
393 flash_sect_protect (0, (ulong
)flash_addr
, end_addr
);
394 flash_write((char *)&active_flag
,
395 (ulong
)&(flash_addr
->flags
),
396 sizeof(flash_addr
->flags
));
397 flash_sect_protect (1, (ulong
)flash_addr
, end_addr
);
400 if (gd
->env_valid
== 2)
401 puts ("*** Warning - some problems detected "
402 "reading environment; recovered successfully\n\n");
403 #endif /* CFG_ENV_ADDR_REDUND */
404 memcpy (env_ptr
, (void*)flash_addr
, CFG_ENV_SIZE
);
405 #endif /* ! ENV_IS_EMBEDDED || CFG_ENV_ADDR_REDUND */
408 #endif /* CFG_ENV_IS_IN_FLASH */