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 <linux/stddef.h>
38 #if ((CONFIG_COMMANDS&(CFG_CMD_ENV|CFG_CMD_FLASH)) == (CFG_CMD_ENV|CFG_CMD_FLASH))
40 #elif defined(CFG_ENV_ADDR_REDUND)
41 #error Cannot use CFG_ENV_ADDR_REDUND without CFG_CMD_ENV & CFG_CMD_FLASH
44 #if defined(CFG_ENV_SIZE_REDUND) && (CFG_ENV_SIZE_REDUND < CFG_ENV_SIZE)
45 #error CFG_ENV_SIZE_REDUND should not be less then CFG_ENV_SIZE
49 # ifdef CFG_ENV_ADDR_REDUND
50 #error CFG_ENV_ADDR_REDUND is not implemented for CONFIG_INFERNO
54 char * env_name_spec
= "Flash";
56 #ifdef ENV_IS_EMBEDDED
58 extern uchar environment
[];
59 env_t
*env_ptr
= (env_t
*)(&environment
[0]);
62 /* static env_t *flash_addr = (env_t *)(&environment[0]);-broken on ARM-wd-*/
63 static env_t
*flash_addr
= (env_t
*)CFG_ENV_ADDR
;
66 #else /* ! ENV_IS_EMBEDDED */
68 env_t
*env_ptr
= (env_t
*)CFG_ENV_ADDR
;
70 static env_t
*flash_addr
= (env_t
*)CFG_ENV_ADDR
;
73 #endif /* ENV_IS_EMBEDDED */
75 #ifdef CFG_ENV_ADDR_REDUND
76 static env_t
*flash_addr_new
= (env_t
*)CFG_ENV_ADDR_REDUND
;
78 /* CFG_ENV_ADDR is supposed to be on sector boundary */
79 static ulong end_addr
= CFG_ENV_ADDR
+ CFG_ENV_SECT_SIZE
- 1;
80 static ulong end_addr_new
= CFG_ENV_ADDR_REDUND
+ CFG_ENV_SECT_SIZE
- 1;
83 #define OBSOLETE_FLAG 0
84 #endif /* CFG_ENV_ADDR_REDUND */
86 extern uchar default_environment
[];
87 extern int default_environment_size
;
90 uchar
env_get_char_spec (int index
)
92 DECLARE_GLOBAL_DATA_PTR
;
94 return ( *((uchar
*)(gd
->env_addr
+ index
)) );
97 #ifdef CFG_ENV_ADDR_REDUND
101 DECLARE_GLOBAL_DATA_PTR
;
102 int crc1_ok
= 0, crc2_ok
= 0;
104 uchar flag1
= flash_addr
->flags
;
105 uchar flag2
= flash_addr_new
->flags
;
107 ulong addr_default
= (ulong
)&default_environment
[0];
108 ulong addr1
= (ulong
)&(flash_addr
->data
);
109 ulong addr2
= (ulong
)&(flash_addr_new
->data
);
111 #ifdef CONFIG_OMAP2420H4
112 int flash_probe(void);
114 if(flash_probe() == 0)
118 crc1_ok
= (crc32(0, flash_addr
->data
, ENV_SIZE
) == flash_addr
->crc
);
119 crc2_ok
= (crc32(0, flash_addr_new
->data
, ENV_SIZE
) == flash_addr_new
->crc
);
121 if (crc1_ok
&& ! crc2_ok
) {
122 gd
->env_addr
= addr1
;
124 } else if (! crc1_ok
&& crc2_ok
) {
125 gd
->env_addr
= addr2
;
127 } else if (! crc1_ok
&& ! crc2_ok
) {
128 gd
->env_addr
= addr_default
;
130 } else if (flag1
== ACTIVE_FLAG
&& flag2
== OBSOLETE_FLAG
) {
131 gd
->env_addr
= addr1
;
133 } else if (flag1
== OBSOLETE_FLAG
&& flag2
== ACTIVE_FLAG
) {
134 gd
->env_addr
= addr2
;
136 } else if (flag1
== flag2
) {
137 gd
->env_addr
= addr1
;
139 } else if (flag1
== 0xFF) {
140 gd
->env_addr
= addr1
;
142 } else if (flag2
== 0xFF) {
143 gd
->env_addr
= addr2
;
147 #ifdef CONFIG_OMAP2420H4
156 char *saved_data
= NULL
;
158 char flag
= OBSOLETE_FLAG
, new_flag
= ACTIVE_FLAG
;
159 #if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
163 debug ("Protect off %08lX ... %08lX\n",
164 (ulong
)flash_addr
, end_addr
);
166 if (flash_sect_protect (0, (ulong
)flash_addr
, end_addr
)) {
170 debug ("Protect off %08lX ... %08lX\n",
171 (ulong
)flash_addr_new
, end_addr_new
);
173 if (flash_sect_protect (0, (ulong
)flash_addr_new
, end_addr_new
)) {
177 #if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
178 up_data
= (end_addr_new
+ 1 - ((long)flash_addr_new
+ CFG_ENV_SIZE
));
179 debug ("Data to save 0x%x\n", up_data
);
181 if ((saved_data
= malloc(up_data
)) == NULL
) {
182 printf("Unable to save the rest of sector (%ld)\n",
187 (void *)((long)flash_addr_new
+ CFG_ENV_SIZE
), up_data
);
188 debug ("Data (start 0x%x, len 0x%x) saved at 0x%x\n",
189 (long)flash_addr_new
+ CFG_ENV_SIZE
,
190 up_data
, saved_data
);
193 puts ("Erasing Flash...");
194 debug (" %08lX ... %08lX ...",
195 (ulong
)flash_addr_new
, end_addr_new
);
197 if (flash_sect_erase ((ulong
)flash_addr_new
, end_addr_new
)) {
201 puts ("Writing to Flash... ");
202 debug (" %08lX ... %08lX ...",
203 (ulong
)&(flash_addr_new
->data
),
204 sizeof(env_ptr
->data
)+(ulong
)&(flash_addr_new
->data
));
205 if ((rc
= flash_write((char *)env_ptr
->data
,
206 (ulong
)&(flash_addr_new
->data
),
207 sizeof(env_ptr
->data
))) ||
208 (rc
= flash_write((char *)&(env_ptr
->crc
),
209 (ulong
)&(flash_addr_new
->crc
),
210 sizeof(env_ptr
->crc
))) ||
211 (rc
= flash_write(&flag
,
212 (ulong
)&(flash_addr
->flags
),
213 sizeof(flash_addr
->flags
))) ||
214 (rc
= flash_write(&new_flag
,
215 (ulong
)&(flash_addr_new
->flags
),
216 sizeof(flash_addr_new
->flags
))))
223 #if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
224 if (up_data
) { /* restore the rest of sector */
225 debug ("Restoring the rest of data to 0x%x len 0x%x\n",
226 (long)flash_addr_new
+ CFG_ENV_SIZE
, up_data
);
227 if (flash_write(saved_data
,
228 (long)flash_addr_new
+ CFG_ENV_SIZE
,
236 env_t
* etmp
= flash_addr
;
237 ulong ltmp
= end_addr
;
239 flash_addr
= flash_addr_new
;
240 flash_addr_new
= etmp
;
242 end_addr
= end_addr_new
;
251 /* try to re-protect */
252 (void) flash_sect_protect (1, (ulong
)flash_addr
, end_addr
);
253 (void) flash_sect_protect (1, (ulong
)flash_addr_new
, end_addr_new
);
257 #endif /* CMD_SAVEENV */
259 #else /* ! CFG_ENV_ADDR_REDUND */
263 DECLARE_GLOBAL_DATA_PTR
;
264 #ifdef CONFIG_OMAP2420H4
265 int flash_probe(void);
267 if(flash_probe() == 0)
270 if (crc32(0, env_ptr
->data
, ENV_SIZE
) == env_ptr
->crc
) {
271 gd
->env_addr
= (ulong
)&(env_ptr
->data
);
275 #ifdef CONFIG_OMAP2420H4
278 gd
->env_addr
= (ulong
)&default_environment
[0];
289 ulong flash_sect_addr
;
290 #if defined(CFG_ENV_SECT_SIZE) && (CFG_ENV_SECT_SIZE > CFG_ENV_SIZE)
292 uchar env_buffer
[CFG_ENV_SECT_SIZE
];
294 uchar
*env_buffer
= (uchar
*)env_ptr
;
295 #endif /* CFG_ENV_SECT_SIZE */
298 #if defined(CFG_ENV_SECT_SIZE) && (CFG_ENV_SECT_SIZE > CFG_ENV_SIZE)
300 flash_offset
= ((ulong
)flash_addr
) & (CFG_ENV_SECT_SIZE
-1);
301 flash_sect_addr
= ((ulong
)flash_addr
) & ~(CFG_ENV_SECT_SIZE
-1);
303 debug ( "copy old content: "
304 "sect_addr: %08lX env_addr: %08lX offset: %08lX\n",
305 flash_sect_addr
, (ulong
)flash_addr
, flash_offset
);
307 /* copy old contents to temporary buffer */
308 memcpy (env_buffer
, (void *)flash_sect_addr
, CFG_ENV_SECT_SIZE
);
310 /* copy current environment to temporary buffer */
311 memcpy ((uchar
*)((unsigned long)env_buffer
+ flash_offset
),
315 len
= CFG_ENV_SECT_SIZE
;
317 flash_sect_addr
= (ulong
)flash_addr
;
319 #endif /* CFG_ENV_SECT_SIZE */
321 #ifndef CONFIG_INFERNO
322 end_addr
= flash_sect_addr
+ len
- 1;
324 /* this is the last sector, and the size is hardcoded here */
325 /* otherwise we will get stack problems on loading 128 KB environment */
326 end_addr
= flash_sect_addr
+ 0x20000 - 1;
329 debug ("Protect off %08lX ... %08lX\n",
330 (ulong
)flash_sect_addr
, end_addr
);
332 if (flash_sect_protect (0, flash_sect_addr
, end_addr
))
335 puts ("Erasing Flash...");
336 if (flash_sect_erase (flash_sect_addr
, end_addr
))
339 puts ("Writing to Flash... ");
340 rc
= flash_write((char *)env_buffer
, flash_sect_addr
, len
);
348 /* try to re-protect */
349 (void) flash_sect_protect (1, flash_sect_addr
, end_addr
);
353 #endif /* CMD_SAVEENV */
355 #endif /* CFG_ENV_ADDR_REDUND */
357 void env_relocate_spec (void)
359 #if !defined(ENV_IS_EMBEDDED) || defined(CFG_ENV_ADDR_REDUND)
360 #ifdef CFG_ENV_ADDR_REDUND
361 DECLARE_GLOBAL_DATA_PTR
;
363 if (gd
->env_addr
!= (ulong
)&(flash_addr
->data
)) {
364 env_t
* etmp
= flash_addr
;
365 ulong ltmp
= end_addr
;
367 flash_addr
= flash_addr_new
;
368 flash_addr_new
= etmp
;
370 end_addr
= end_addr_new
;
374 if (flash_addr_new
->flags
!= OBSOLETE_FLAG
&&
375 crc32(0, flash_addr_new
->data
, ENV_SIZE
) ==
376 flash_addr_new
->crc
) {
377 char flag
= OBSOLETE_FLAG
;
380 flash_sect_protect (0, (ulong
)flash_addr_new
, end_addr_new
);
382 (ulong
)&(flash_addr_new
->flags
),
383 sizeof(flash_addr_new
->flags
));
384 flash_sect_protect (1, (ulong
)flash_addr_new
, end_addr_new
);
387 if (flash_addr
->flags
!= ACTIVE_FLAG
&&
388 (flash_addr
->flags
& ACTIVE_FLAG
) == ACTIVE_FLAG
) {
389 char flag
= ACTIVE_FLAG
;
392 flash_sect_protect (0, (ulong
)flash_addr
, end_addr
);
394 (ulong
)&(flash_addr
->flags
),
395 sizeof(flash_addr
->flags
));
396 flash_sect_protect (1, (ulong
)flash_addr
, end_addr
);
399 if (gd
->env_valid
== 2)
400 puts ("*** Warning - some problems detected "
401 "reading environment; recovered successfully\n\n");
402 #endif /* CFG_ENV_ADDR_REDUND */
403 memcpy (env_ptr
, (void*)flash_addr
, CFG_ENV_SIZE
);
404 #endif /* ! ENV_IS_EMBEDDED || CFG_ENV_ADDR_REDUND */
407 #endif /* CFG_ENV_IS_IN_FLASH */