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Commit | Line | Data |
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8c66497e | 1 | /* |
ea882baf | 2 | * (C) Copyright 2000-2010 |
8c66497e HS |
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 | * (C) Copyright 2008 Atmel Corporation | |
9 | * | |
402ba1e3 | 10 | * SPDX-License-Identifier: GPL-2.0+ |
8c66497e HS |
11 | */ |
12 | #include <common.h> | |
8c66497e | 13 | #include <environment.h> |
5b3375ac | 14 | #include <malloc.h> |
8c66497e | 15 | #include <spi_flash.h> |
ea882baf WD |
16 | #include <search.h> |
17 | #include <errno.h> | |
8c66497e | 18 | |
0e8d1586 JCPV |
19 | #ifndef CONFIG_ENV_SPI_BUS |
20 | # define CONFIG_ENV_SPI_BUS 0 | |
8c66497e | 21 | #endif |
0e8d1586 | 22 | #ifndef CONFIG_ENV_SPI_CS |
eb58a7fc | 23 | # define CONFIG_ENV_SPI_CS 0 |
8c66497e | 24 | #endif |
0e8d1586 JCPV |
25 | #ifndef CONFIG_ENV_SPI_MAX_HZ |
26 | # define CONFIG_ENV_SPI_MAX_HZ 1000000 | |
8c66497e | 27 | #endif |
0e8d1586 JCPV |
28 | #ifndef CONFIG_ENV_SPI_MODE |
29 | # define CONFIG_ENV_SPI_MODE SPI_MODE_3 | |
8c66497e HS |
30 | #endif |
31 | ||
7319bcaf | 32 | #ifdef CONFIG_ENV_OFFSET_REDUND |
eb58a7fc IG |
33 | static ulong env_offset = CONFIG_ENV_OFFSET; |
34 | static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND; | |
7319bcaf | 35 | |
eb58a7fc IG |
36 | #define ACTIVE_FLAG 1 |
37 | #define OBSOLETE_FLAG 0 | |
a3110f01 | 38 | #endif /* CONFIG_ENV_OFFSET_REDUND */ |
7319bcaf | 39 | |
8c66497e HS |
40 | DECLARE_GLOBAL_DATA_PTR; |
41 | ||
eb58a7fc | 42 | char *env_name_spec = "SPI Flash"; |
8c66497e HS |
43 | |
44 | static struct spi_flash *env_flash; | |
45 | ||
7319bcaf | 46 | #if defined(CONFIG_ENV_OFFSET_REDUND) |
7319bcaf WW |
47 | int saveenv(void) |
48 | { | |
cd0f4fa1 | 49 | env_t env_new; |
ea882baf | 50 | ssize_t len; |
eb58a7fc IG |
51 | char *res, *saved_buffer = NULL, flag = OBSOLETE_FLAG; |
52 | u32 saved_size, saved_offset, sector = 1; | |
ea882baf | 53 | int ret; |
7319bcaf WW |
54 | |
55 | if (!env_flash) { | |
a3110f01 SB |
56 | env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, |
57 | CONFIG_ENV_SPI_CS, | |
58 | CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); | |
59 | if (!env_flash) { | |
60 | set_default_env("!spi_flash_probe() failed"); | |
61 | return 1; | |
62 | } | |
7319bcaf WW |
63 | } |
64 | ||
cd0f4fa1 | 65 | res = (char *)&env_new.data; |
be11235a | 66 | len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); |
ea882baf WD |
67 | if (len < 0) { |
68 | error("Cannot export environment: errno = %d\n", errno); | |
69 | return 1; | |
70 | } | |
cd0f4fa1 TR |
71 | env_new.crc = crc32(0, env_new.data, ENV_SIZE); |
72 | env_new.flags = ACTIVE_FLAG; | |
ea882baf | 73 | |
a3110f01 SB |
74 | if (gd->env_valid == 1) { |
75 | env_new_offset = CONFIG_ENV_OFFSET_REDUND; | |
76 | env_offset = CONFIG_ENV_OFFSET; | |
77 | } else { | |
78 | env_new_offset = CONFIG_ENV_OFFSET; | |
79 | env_offset = CONFIG_ENV_OFFSET_REDUND; | |
80 | } | |
81 | ||
7319bcaf WW |
82 | /* Is the sector larger than the env (i.e. embedded) */ |
83 | if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { | |
84 | saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE; | |
85 | saved_offset = env_new_offset + CONFIG_ENV_SIZE; | |
86 | saved_buffer = malloc(saved_size); | |
87 | if (!saved_buffer) { | |
88 | ret = 1; | |
89 | goto done; | |
90 | } | |
91 | ret = spi_flash_read(env_flash, saved_offset, | |
92 | saved_size, saved_buffer); | |
93 | if (ret) | |
94 | goto done; | |
95 | } | |
96 | ||
97 | if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) { | |
98 | sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE; | |
99 | if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE) | |
100 | sector++; | |
101 | } | |
102 | ||
103 | puts("Erasing SPI flash..."); | |
104 | ret = spi_flash_erase(env_flash, env_new_offset, | |
105 | sector * CONFIG_ENV_SECT_SIZE); | |
106 | if (ret) | |
107 | goto done; | |
108 | ||
109 | puts("Writing to SPI flash..."); | |
7319bcaf | 110 | |
a3110f01 | 111 | ret = spi_flash_write(env_flash, env_new_offset, |
cd0f4fa1 | 112 | CONFIG_ENV_SIZE, &env_new); |
7319bcaf WW |
113 | if (ret) |
114 | goto done; | |
115 | ||
116 | if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { | |
117 | ret = spi_flash_write(env_flash, saved_offset, | |
118 | saved_size, saved_buffer); | |
119 | if (ret) | |
120 | goto done; | |
121 | } | |
122 | ||
eb58a7fc | 123 | ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags), |
cd0f4fa1 | 124 | sizeof(env_new.flags), &flag); |
a3110f01 SB |
125 | if (ret) |
126 | goto done; | |
7319bcaf | 127 | |
7319bcaf WW |
128 | puts("done\n"); |
129 | ||
eb58a7fc | 130 | gd->env_valid = gd->env_valid == 2 ? 1 : 2; |
a3110f01 | 131 | |
2dc55d9e | 132 | printf("Valid environment: %d\n", (int)gd->env_valid); |
a3110f01 | 133 | |
7319bcaf WW |
134 | done: |
135 | if (saved_buffer) | |
136 | free(saved_buffer); | |
eb58a7fc | 137 | |
7319bcaf WW |
138 | return ret; |
139 | } | |
140 | ||
141 | void env_relocate_spec(void) | |
142 | { | |
143 | int ret; | |
144 | int crc1_ok = 0, crc2_ok = 0; | |
145 | env_t *tmp_env1 = NULL; | |
146 | env_t *tmp_env2 = NULL; | |
a3110f01 | 147 | env_t *ep = NULL; |
7319bcaf WW |
148 | |
149 | tmp_env1 = (env_t *)malloc(CONFIG_ENV_SIZE); | |
7319bcaf | 150 | tmp_env2 = (env_t *)malloc(CONFIG_ENV_SIZE); |
ea882baf WD |
151 | |
152 | if (!tmp_env1 || !tmp_env2) { | |
ea882baf | 153 | set_default_env("!malloc() failed"); |
2dc55d9e | 154 | goto out; |
7319bcaf WW |
155 | } |
156 | ||
157 | env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, | |
158 | CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); | |
ea882baf WD |
159 | if (!env_flash) { |
160 | set_default_env("!spi_flash_probe() failed"); | |
2dc55d9e | 161 | goto out; |
ea882baf | 162 | } |
7319bcaf WW |
163 | |
164 | ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET, | |
165 | CONFIG_ENV_SIZE, tmp_env1); | |
ea882baf WD |
166 | if (ret) { |
167 | set_default_env("!spi_flash_read() failed"); | |
7319bcaf | 168 | goto err_read; |
ea882baf | 169 | } |
7319bcaf WW |
170 | |
171 | if (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc) | |
172 | crc1_ok = 1; | |
7319bcaf WW |
173 | |
174 | ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET_REDUND, | |
175 | CONFIG_ENV_SIZE, tmp_env2); | |
176 | if (!ret) { | |
177 | if (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc) | |
178 | crc2_ok = 1; | |
7319bcaf WW |
179 | } |
180 | ||
a3110f01 | 181 | if (!crc1_ok && !crc2_ok) { |
a3110f01 | 182 | set_default_env("!bad CRC"); |
2dc55d9e | 183 | goto err_read; |
a3110f01 | 184 | } else if (crc1_ok && !crc2_ok) { |
7319bcaf | 185 | gd->env_valid = 1; |
7319bcaf | 186 | } else if (!crc1_ok && crc2_ok) { |
2dc55d9e | 187 | gd->env_valid = 2; |
188 | } else if (tmp_env1->flags == ACTIVE_FLAG && | |
189 | tmp_env2->flags == OBSOLETE_FLAG) { | |
7319bcaf | 190 | gd->env_valid = 1; |
2dc55d9e | 191 | } else if (tmp_env1->flags == OBSOLETE_FLAG && |
192 | tmp_env2->flags == ACTIVE_FLAG) { | |
a3110f01 | 193 | gd->env_valid = 2; |
2dc55d9e | 194 | } else if (tmp_env1->flags == tmp_env2->flags) { |
7319bcaf | 195 | gd->env_valid = 2; |
2dc55d9e | 196 | } else if (tmp_env1->flags == 0xFF) { |
7319bcaf | 197 | gd->env_valid = 2; |
7319bcaf WW |
198 | } else { |
199 | /* | |
200 | * this differs from code in env_flash.c, but I think a sane | |
201 | * default path is desirable. | |
202 | */ | |
203 | gd->env_valid = 2; | |
7319bcaf | 204 | } |
ea882baf | 205 | |
a3110f01 SB |
206 | if (gd->env_valid == 1) |
207 | ep = tmp_env1; | |
208 | else | |
209 | ep = tmp_env2; | |
210 | ||
211 | ret = env_import((char *)ep, 0); | |
212 | if (!ret) { | |
213 | error("Cannot import environment: errno = %d\n", errno); | |
214 | set_default_env("env_import failed"); | |
7319bcaf | 215 | } |
7319bcaf WW |
216 | |
217 | err_read: | |
218 | spi_flash_free(env_flash); | |
219 | env_flash = NULL; | |
7319bcaf | 220 | out: |
ea882baf WD |
221 | free(tmp_env1); |
222 | free(tmp_env2); | |
7319bcaf WW |
223 | } |
224 | #else | |
8c66497e HS |
225 | int saveenv(void) |
226 | { | |
eb58a7fc IG |
227 | u32 saved_size, saved_offset, sector = 1; |
228 | char *res, *saved_buffer = NULL; | |
229 | int ret = 1; | |
cd0f4fa1 | 230 | env_t env_new; |
a3110f01 | 231 | ssize_t len; |
07efc9e3 | 232 | |
8c66497e | 233 | if (!env_flash) { |
a3110f01 SB |
234 | env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, |
235 | CONFIG_ENV_SPI_CS, | |
236 | CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); | |
237 | if (!env_flash) { | |
238 | set_default_env("!spi_flash_probe() failed"); | |
239 | return 1; | |
240 | } | |
8c66497e HS |
241 | } |
242 | ||
5b3375ac MF |
243 | /* Is the sector larger than the env (i.e. embedded) */ |
244 | if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { | |
245 | saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE; | |
246 | saved_offset = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; | |
247 | saved_buffer = malloc(saved_size); | |
eb58a7fc | 248 | if (!saved_buffer) |
5b3375ac | 249 | goto done; |
eb58a7fc | 250 | |
a3110f01 SB |
251 | ret = spi_flash_read(env_flash, saved_offset, |
252 | saved_size, saved_buffer); | |
5b3375ac MF |
253 | if (ret) |
254 | goto done; | |
255 | } | |
256 | ||
0e8d1586 JCPV |
257 | if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) { |
258 | sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE; | |
259 | if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE) | |
07efc9e3 TL |
260 | sector++; |
261 | } | |
262 | ||
cd0f4fa1 | 263 | res = (char *)&env_new.data; |
be11235a | 264 | len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); |
a3110f01 SB |
265 | if (len < 0) { |
266 | error("Cannot export environment: errno = %d\n", errno); | |
267 | goto done; | |
268 | } | |
cd0f4fa1 | 269 | env_new.crc = crc32(0, env_new.data, ENV_SIZE); |
a3110f01 | 270 | |
8c66497e | 271 | puts("Erasing SPI flash..."); |
a3110f01 SB |
272 | ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET, |
273 | sector * CONFIG_ENV_SECT_SIZE); | |
5b3375ac MF |
274 | if (ret) |
275 | goto done; | |
8c66497e HS |
276 | |
277 | puts("Writing to SPI flash..."); | |
a3110f01 | 278 | ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET, |
cd0f4fa1 | 279 | CONFIG_ENV_SIZE, &env_new); |
5b3375ac MF |
280 | if (ret) |
281 | goto done; | |
8c66497e | 282 | |
5b3375ac | 283 | if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { |
a3110f01 SB |
284 | ret = spi_flash_write(env_flash, saved_offset, |
285 | saved_size, saved_buffer); | |
5b3375ac MF |
286 | if (ret) |
287 | goto done; | |
288 | } | |
289 | ||
290 | ret = 0; | |
8c66497e | 291 | puts("done\n"); |
5b3375ac MF |
292 | |
293 | done: | |
294 | if (saved_buffer) | |
295 | free(saved_buffer); | |
eb58a7fc | 296 | |
5b3375ac | 297 | return ret; |
8c66497e HS |
298 | } |
299 | ||
300 | void env_relocate_spec(void) | |
301 | { | |
cd0f4fa1 | 302 | char buf[CONFIG_ENV_SIZE]; |
8c66497e HS |
303 | int ret; |
304 | ||
0e8d1586 JCPV |
305 | env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, |
306 | CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); | |
ea882baf WD |
307 | if (!env_flash) { |
308 | set_default_env("!spi_flash_probe() failed"); | |
309 | return; | |
310 | } | |
8c66497e | 311 | |
ea882baf WD |
312 | ret = spi_flash_read(env_flash, |
313 | CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf); | |
314 | if (ret) { | |
315 | set_default_env("!spi_flash_read() failed"); | |
316 | goto out; | |
317 | } | |
8c66497e | 318 | |
ea882baf | 319 | ret = env_import(buf, 1); |
ea882baf WD |
320 | if (ret) |
321 | gd->env_valid = 1; | |
322 | out: | |
8c66497e HS |
323 | spi_flash_free(env_flash); |
324 | env_flash = NULL; | |
8c66497e | 325 | } |
7319bcaf | 326 | #endif |
8c66497e HS |
327 | |
328 | int env_init(void) | |
329 | { | |
330 | /* SPI flash isn't usable before relocation */ | |
331 | gd->env_addr = (ulong)&default_environment[0]; | |
332 | gd->env_valid = 1; | |
333 | ||
334 | return 0; | |
335 | } |