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c609719b WD |
1 | /* |
2 | * (C) Copyright 2000-2002 | |
3 | * 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> | |
7 | ||
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
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. | |
15 | * | |
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. | |
20 | * | |
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, | |
24 | * MA 02111-1307 USA | |
25 | */ | |
26 | ||
27 | /* #define DEBUG */ | |
28 | ||
29 | #include <common.h> | |
c609719b WD |
30 | #include <command.h> |
31 | #include <environment.h> | |
c609719b | 32 | #include <linux/stddef.h> |
47cd00fa | 33 | #include <malloc.h> |
c609719b | 34 | |
d87080b7 WD |
35 | DECLARE_GLOBAL_DATA_PTR; |
36 | ||
bdab39d3 | 37 | #if defined(CONFIG_CMD_SAVEENV) && defined(CONFIG_CMD_FLASH) |
c609719b | 38 | #define CMD_SAVEENV |
0e8d1586 | 39 | #elif defined(CONFIG_ENV_ADDR_REDUND) |
bdab39d3 | 40 | #error Cannot use CONFIG_ENV_ADDR_REDUND without CONFIG_CMD_SAVEENV & CONFIG_CMD_FLASH |
c609719b WD |
41 | #endif |
42 | ||
0e8d1586 JCPV |
43 | #if defined(CONFIG_ENV_SIZE_REDUND) && (CONFIG_ENV_SIZE_REDUND < CONFIG_ENV_SIZE) |
44 | #error CONFIG_ENV_SIZE_REDUND should not be less then CONFIG_ENV_SIZE | |
c609719b WD |
45 | #endif |
46 | ||
47 | #ifdef CONFIG_INFERNO | |
0e8d1586 JCPV |
48 | # ifdef CONFIG_ENV_ADDR_REDUND |
49 | #error CONFIG_ENV_ADDR_REDUND is not implemented for CONFIG_INFERNO | |
c609719b WD |
50 | # endif |
51 | #endif | |
52 | ||
53 | char * env_name_spec = "Flash"; | |
54 | ||
55 | #ifdef ENV_IS_EMBEDDED | |
56 | ||
57 | extern uchar environment[]; | |
58 | env_t *env_ptr = (env_t *)(&environment[0]); | |
59 | ||
60 | #ifdef CMD_SAVEENV | |
61 | /* static env_t *flash_addr = (env_t *)(&environment[0]);-broken on ARM-wd-*/ | |
0e8d1586 | 62 | static env_t *flash_addr = (env_t *)CONFIG_ENV_ADDR; |
c609719b WD |
63 | #endif |
64 | ||
65 | #else /* ! ENV_IS_EMBEDDED */ | |
66 | ||
0e8d1586 | 67 | env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR; |
c609719b | 68 | #ifdef CMD_SAVEENV |
0e8d1586 | 69 | static env_t *flash_addr = (env_t *)CONFIG_ENV_ADDR; |
c609719b WD |
70 | #endif |
71 | ||
72 | #endif /* ENV_IS_EMBEDDED */ | |
73 | ||
0e8d1586 JCPV |
74 | #ifdef CONFIG_ENV_ADDR_REDUND |
75 | static env_t *flash_addr_new = (env_t *)CONFIG_ENV_ADDR_REDUND; | |
c609719b | 76 | |
0e8d1586 JCPV |
77 | /* CONFIG_ENV_ADDR is supposed to be on sector boundary */ |
78 | static ulong end_addr = CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1; | |
79 | static ulong end_addr_new = CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1; | |
c609719b | 80 | |
c3f9d493 WD |
81 | #define ACTIVE_FLAG 1 |
82 | #define OBSOLETE_FLAG 0 | |
0e8d1586 | 83 | #endif /* CONFIG_ENV_ADDR_REDUND */ |
c609719b WD |
84 | |
85 | extern uchar default_environment[]; | |
c609719b WD |
86 | |
87 | ||
88 | uchar env_get_char_spec (int index) | |
89 | { | |
c609719b WD |
90 | return ( *((uchar *)(gd->env_addr + index)) ); |
91 | } | |
92 | ||
0e8d1586 | 93 | #ifdef CONFIG_ENV_ADDR_REDUND |
c609719b WD |
94 | |
95 | int env_init(void) | |
96 | { | |
8ed96046 | 97 | int crc1_ok = 0, crc2_ok = 0; |
c609719b WD |
98 | |
99 | uchar flag1 = flash_addr->flags; | |
100 | uchar flag2 = flash_addr_new->flags; | |
101 | ||
102 | ulong addr_default = (ulong)&default_environment[0]; | |
103 | ulong addr1 = (ulong)&(flash_addr->data); | |
104 | ulong addr2 = (ulong)&(flash_addr_new->data); | |
105 | ||
8ed96046 WD |
106 | crc1_ok = (crc32(0, flash_addr->data, ENV_SIZE) == flash_addr->crc); |
107 | crc2_ok = (crc32(0, flash_addr_new->data, ENV_SIZE) == flash_addr_new->crc); | |
108 | ||
c3f9d493 | 109 | if (crc1_ok && ! crc2_ok) { |
c609719b WD |
110 | gd->env_addr = addr1; |
111 | gd->env_valid = 1; | |
c3f9d493 | 112 | } else if (! crc1_ok && crc2_ok) { |
c609719b WD |
113 | gd->env_addr = addr2; |
114 | gd->env_valid = 1; | |
c3f9d493 | 115 | } else if (! crc1_ok && ! crc2_ok) { |
c609719b WD |
116 | gd->env_addr = addr_default; |
117 | gd->env_valid = 0; | |
c3f9d493 | 118 | } else if (flag1 == ACTIVE_FLAG && flag2 == OBSOLETE_FLAG) { |
c609719b WD |
119 | gd->env_addr = addr1; |
120 | gd->env_valid = 1; | |
c3f9d493 | 121 | } else if (flag1 == OBSOLETE_FLAG && flag2 == ACTIVE_FLAG) { |
c609719b WD |
122 | gd->env_addr = addr2; |
123 | gd->env_valid = 1; | |
c3f9d493 | 124 | } else if (flag1 == flag2) { |
c609719b WD |
125 | gd->env_addr = addr1; |
126 | gd->env_valid = 2; | |
c3f9d493 | 127 | } else if (flag1 == 0xFF) { |
c609719b WD |
128 | gd->env_addr = addr1; |
129 | gd->env_valid = 2; | |
c3f9d493 | 130 | } else if (flag2 == 0xFF) { |
c609719b WD |
131 | gd->env_addr = addr2; |
132 | gd->env_valid = 2; | |
133 | } | |
134 | ||
135 | return (0); | |
136 | } | |
137 | ||
138 | #ifdef CMD_SAVEENV | |
139 | int saveenv(void) | |
140 | { | |
500545cc | 141 | char *saved_data = NULL; |
c609719b | 142 | int rc = 1; |
c3f9d493 | 143 | char flag = OBSOLETE_FLAG, new_flag = ACTIVE_FLAG; |
0e8d1586 | 144 | #if CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE |
47cd00fa | 145 | ulong up_data = 0; |
500545cc | 146 | #endif |
c609719b WD |
147 | |
148 | debug ("Protect off %08lX ... %08lX\n", | |
149 | (ulong)flash_addr, end_addr); | |
150 | ||
151 | if (flash_sect_protect (0, (ulong)flash_addr, end_addr)) { | |
152 | goto Done; | |
153 | } | |
154 | ||
155 | debug ("Protect off %08lX ... %08lX\n", | |
156 | (ulong)flash_addr_new, end_addr_new); | |
157 | ||
158 | if (flash_sect_protect (0, (ulong)flash_addr_new, end_addr_new)) { | |
159 | goto Done; | |
160 | } | |
161 | ||
0e8d1586 JCPV |
162 | #if CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE |
163 | up_data = (end_addr_new + 1 - ((long)flash_addr_new + CONFIG_ENV_SIZE)); | |
47cd00fa WD |
164 | debug ("Data to save 0x%x\n", up_data); |
165 | if (up_data) { | |
166 | if ((saved_data = malloc(up_data)) == NULL) { | |
8bde7f77 | 167 | printf("Unable to save the rest of sector (%ld)\n", |
47cd00fa WD |
168 | up_data); |
169 | goto Done; | |
170 | } | |
8bde7f77 | 171 | memcpy(saved_data, |
0e8d1586 | 172 | (void *)((long)flash_addr_new + CONFIG_ENV_SIZE), up_data); |
8bde7f77 | 173 | debug ("Data (start 0x%x, len 0x%x) saved at 0x%x\n", |
0e8d1586 | 174 | (long)flash_addr_new + CONFIG_ENV_SIZE, |
47cd00fa WD |
175 | up_data, saved_data); |
176 | } | |
177 | #endif | |
c609719b WD |
178 | puts ("Erasing Flash..."); |
179 | debug (" %08lX ... %08lX ...", | |
180 | (ulong)flash_addr_new, end_addr_new); | |
181 | ||
182 | if (flash_sect_erase ((ulong)flash_addr_new, end_addr_new)) { | |
183 | goto Done; | |
184 | } | |
185 | ||
186 | puts ("Writing to Flash... "); | |
187 | debug (" %08lX ... %08lX ...", | |
188 | (ulong)&(flash_addr_new->data), | |
189 | sizeof(env_ptr->data)+(ulong)&(flash_addr_new->data)); | |
77ddac94 | 190 | if ((rc = flash_write((char *)env_ptr->data, |
8bde7f77 | 191 | (ulong)&(flash_addr_new->data), |
c40b2956 | 192 | sizeof(env_ptr->data))) || |
c40b2956 | 193 | (rc = flash_write((char *)&(env_ptr->crc), |
8bde7f77 | 194 | (ulong)&(flash_addr_new->crc), |
c40b2956 | 195 | sizeof(env_ptr->crc))) || |
c3f9d493 | 196 | (rc = flash_write(&flag, |
8bde7f77 | 197 | (ulong)&(flash_addr->flags), |
c40b2956 | 198 | sizeof(flash_addr->flags))) || |
c3f9d493 | 199 | (rc = flash_write(&new_flag, |
8bde7f77 | 200 | (ulong)&(flash_addr_new->flags), |
c40b2956 | 201 | sizeof(flash_addr_new->flags)))) |
c609719b WD |
202 | { |
203 | flash_perror (rc); | |
204 | goto Done; | |
205 | } | |
206 | puts ("done\n"); | |
207 | ||
0e8d1586 | 208 | #if CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE |
47cd00fa WD |
209 | if (up_data) { /* restore the rest of sector */ |
210 | debug ("Restoring the rest of data to 0x%x len 0x%x\n", | |
0e8d1586 | 211 | (long)flash_addr_new + CONFIG_ENV_SIZE, up_data); |
8bde7f77 | 212 | if (flash_write(saved_data, |
0e8d1586 | 213 | (long)flash_addr_new + CONFIG_ENV_SIZE, |
47cd00fa WD |
214 | up_data)) { |
215 | flash_perror(rc); | |
216 | goto Done; | |
217 | } | |
218 | } | |
219 | #endif | |
c609719b WD |
220 | { |
221 | env_t * etmp = flash_addr; | |
222 | ulong ltmp = end_addr; | |
223 | ||
224 | flash_addr = flash_addr_new; | |
225 | flash_addr_new = etmp; | |
226 | ||
227 | end_addr = end_addr_new; | |
228 | end_addr_new = ltmp; | |
229 | } | |
230 | ||
231 | rc = 0; | |
232 | Done: | |
233 | ||
47cd00fa WD |
234 | if (saved_data) |
235 | free (saved_data); | |
c609719b WD |
236 | /* try to re-protect */ |
237 | (void) flash_sect_protect (1, (ulong)flash_addr, end_addr); | |
238 | (void) flash_sect_protect (1, (ulong)flash_addr_new, end_addr_new); | |
239 | ||
240 | return rc; | |
241 | } | |
242 | #endif /* CMD_SAVEENV */ | |
243 | ||
0e8d1586 | 244 | #else /* ! CONFIG_ENV_ADDR_REDUND */ |
c609719b WD |
245 | |
246 | int env_init(void) | |
247 | { | |
c609719b WD |
248 | if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) { |
249 | gd->env_addr = (ulong)&(env_ptr->data); | |
250 | gd->env_valid = 1; | |
8ed96046 | 251 | return(0); |
c609719b | 252 | } |
9bb8b209 | 253 | |
8ed96046 WD |
254 | gd->env_addr = (ulong)&default_environment[0]; |
255 | gd->env_valid = 0; | |
c609719b WD |
256 | return (0); |
257 | } | |
258 | ||
259 | #ifdef CMD_SAVEENV | |
260 | ||
261 | int saveenv(void) | |
262 | { | |
263 | int len, rc; | |
264 | ulong end_addr; | |
265 | ulong flash_sect_addr; | |
0e8d1586 | 266 | #if defined(CONFIG_ENV_SECT_SIZE) && (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) |
c609719b | 267 | ulong flash_offset; |
0e8d1586 | 268 | uchar env_buffer[CONFIG_ENV_SECT_SIZE]; |
c609719b | 269 | #else |
77ddac94 | 270 | uchar *env_buffer = (uchar *)env_ptr; |
0e8d1586 | 271 | #endif /* CONFIG_ENV_SECT_SIZE */ |
c609719b WD |
272 | int rcode = 0; |
273 | ||
0e8d1586 | 274 | #if defined(CONFIG_ENV_SECT_SIZE) && (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) |
c609719b | 275 | |
0e8d1586 JCPV |
276 | flash_offset = ((ulong)flash_addr) & (CONFIG_ENV_SECT_SIZE-1); |
277 | flash_sect_addr = ((ulong)flash_addr) & ~(CONFIG_ENV_SECT_SIZE-1); | |
c609719b WD |
278 | |
279 | debug ( "copy old content: " | |
280 | "sect_addr: %08lX env_addr: %08lX offset: %08lX\n", | |
281 | flash_sect_addr, (ulong)flash_addr, flash_offset); | |
282 | ||
283 | /* copy old contents to temporary buffer */ | |
0e8d1586 | 284 | memcpy (env_buffer, (void *)flash_sect_addr, CONFIG_ENV_SECT_SIZE); |
c609719b WD |
285 | |
286 | /* copy current environment to temporary buffer */ | |
287 | memcpy ((uchar *)((unsigned long)env_buffer + flash_offset), | |
288 | env_ptr, | |
0e8d1586 | 289 | CONFIG_ENV_SIZE); |
c609719b | 290 | |
0e8d1586 | 291 | len = CONFIG_ENV_SECT_SIZE; |
c609719b WD |
292 | #else |
293 | flash_sect_addr = (ulong)flash_addr; | |
0e8d1586 JCPV |
294 | len = CONFIG_ENV_SIZE; |
295 | #endif /* CONFIG_ENV_SECT_SIZE */ | |
c609719b WD |
296 | |
297 | #ifndef CONFIG_INFERNO | |
298 | end_addr = flash_sect_addr + len - 1; | |
299 | #else | |
300 | /* this is the last sector, and the size is hardcoded here */ | |
301 | /* otherwise we will get stack problems on loading 128 KB environment */ | |
302 | end_addr = flash_sect_addr + 0x20000 - 1; | |
303 | #endif | |
304 | ||
305 | debug ("Protect off %08lX ... %08lX\n", | |
306 | (ulong)flash_sect_addr, end_addr); | |
307 | ||
308 | if (flash_sect_protect (0, flash_sect_addr, end_addr)) | |
309 | return 1; | |
310 | ||
311 | puts ("Erasing Flash..."); | |
312 | if (flash_sect_erase (flash_sect_addr, end_addr)) | |
313 | return 1; | |
314 | ||
315 | puts ("Writing to Flash... "); | |
77ddac94 | 316 | rc = flash_write((char *)env_buffer, flash_sect_addr, len); |
c609719b WD |
317 | if (rc != 0) { |
318 | flash_perror (rc); | |
319 | rcode = 1; | |
320 | } else { | |
321 | puts ("done\n"); | |
322 | } | |
323 | ||
324 | /* try to re-protect */ | |
325 | (void) flash_sect_protect (1, flash_sect_addr, end_addr); | |
326 | return rcode; | |
327 | } | |
328 | ||
329 | #endif /* CMD_SAVEENV */ | |
330 | ||
0e8d1586 | 331 | #endif /* CONFIG_ENV_ADDR_REDUND */ |
c609719b WD |
332 | |
333 | void env_relocate_spec (void) | |
334 | { | |
0e8d1586 JCPV |
335 | #if !defined(ENV_IS_EMBEDDED) || defined(CONFIG_ENV_ADDR_REDUND) |
336 | #ifdef CONFIG_ENV_ADDR_REDUND | |
c3f9d493 | 337 | if (gd->env_addr != (ulong)&(flash_addr->data)) { |
c609719b WD |
338 | env_t * etmp = flash_addr; |
339 | ulong ltmp = end_addr; | |
340 | ||
341 | flash_addr = flash_addr_new; | |
342 | flash_addr_new = etmp; | |
343 | ||
344 | end_addr = end_addr_new; | |
345 | end_addr_new = ltmp; | |
346 | } | |
347 | ||
c3f9d493 | 348 | if (flash_addr_new->flags != OBSOLETE_FLAG && |
c609719b | 349 | crc32(0, flash_addr_new->data, ENV_SIZE) == |
c3f9d493 WD |
350 | flash_addr_new->crc) { |
351 | char flag = OBSOLETE_FLAG; | |
352 | ||
c609719b WD |
353 | gd->env_valid = 2; |
354 | flash_sect_protect (0, (ulong)flash_addr_new, end_addr_new); | |
c3f9d493 | 355 | flash_write(&flag, |
8bde7f77 WD |
356 | (ulong)&(flash_addr_new->flags), |
357 | sizeof(flash_addr_new->flags)); | |
c609719b WD |
358 | flash_sect_protect (1, (ulong)flash_addr_new, end_addr_new); |
359 | } | |
360 | ||
c3f9d493 WD |
361 | if (flash_addr->flags != ACTIVE_FLAG && |
362 | (flash_addr->flags & ACTIVE_FLAG) == ACTIVE_FLAG) { | |
363 | char flag = ACTIVE_FLAG; | |
364 | ||
c609719b WD |
365 | gd->env_valid = 2; |
366 | flash_sect_protect (0, (ulong)flash_addr, end_addr); | |
c3f9d493 | 367 | flash_write(&flag, |
8bde7f77 WD |
368 | (ulong)&(flash_addr->flags), |
369 | sizeof(flash_addr->flags)); | |
c609719b WD |
370 | flash_sect_protect (1, (ulong)flash_addr, end_addr); |
371 | } | |
372 | ||
373 | if (gd->env_valid == 2) | |
374 | puts ("*** Warning - some problems detected " | |
375 | "reading environment; recovered successfully\n\n"); | |
0e8d1586 | 376 | #endif /* CONFIG_ENV_ADDR_REDUND */ |
4acc2a10 | 377 | #ifdef CMD_SAVEENV |
0e8d1586 | 378 | memcpy (env_ptr, (void*)flash_addr, CONFIG_ENV_SIZE); |
4acc2a10 | 379 | #endif |
0e8d1586 | 380 | #endif /* ! ENV_IS_EMBEDDED || CONFIG_ENV_ADDR_REDUND */ |
c609719b | 381 | } |