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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> | |
9d922450 | 13 | #include <dm.h> |
8c66497e | 14 | #include <environment.h> |
5b3375ac | 15 | #include <malloc.h> |
843c9e87 | 16 | #include <spi.h> |
8c66497e | 17 | #include <spi_flash.h> |
ea882baf WD |
18 | #include <search.h> |
19 | #include <errno.h> | |
19c31285 | 20 | #include <dm/device-internal.h> |
8c66497e | 21 | |
0e8d1586 | 22 | #ifndef CONFIG_ENV_SPI_BUS |
2e4e5ad4 | 23 | # define CONFIG_ENV_SPI_BUS CONFIG_SF_DEFAULT_BUS |
8c66497e | 24 | #endif |
0e8d1586 | 25 | #ifndef CONFIG_ENV_SPI_CS |
2e4e5ad4 | 26 | # define CONFIG_ENV_SPI_CS CONFIG_SF_DEFAULT_CS |
8c66497e | 27 | #endif |
0e8d1586 | 28 | #ifndef CONFIG_ENV_SPI_MAX_HZ |
2e4e5ad4 | 29 | # define CONFIG_ENV_SPI_MAX_HZ CONFIG_SF_DEFAULT_SPEED |
8c66497e | 30 | #endif |
0e8d1586 | 31 | #ifndef CONFIG_ENV_SPI_MODE |
2e4e5ad4 | 32 | # define CONFIG_ENV_SPI_MODE CONFIG_SF_DEFAULT_MODE |
8c66497e HS |
33 | #endif |
34 | ||
4415f1d1 SG |
35 | #ifndef CONFIG_SPL_BUILD |
36 | #define CMD_SAVEENV | |
37 | #endif | |
38 | ||
7319bcaf | 39 | #ifdef CONFIG_ENV_OFFSET_REDUND |
4415f1d1 | 40 | #ifdef CMD_SAVEENV |
eb58a7fc IG |
41 | static ulong env_offset = CONFIG_ENV_OFFSET; |
42 | static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND; | |
4415f1d1 | 43 | #endif |
7319bcaf | 44 | |
eb58a7fc IG |
45 | #define ACTIVE_FLAG 1 |
46 | #define OBSOLETE_FLAG 0 | |
a3110f01 | 47 | #endif /* CONFIG_ENV_OFFSET_REDUND */ |
7319bcaf | 48 | |
8c66497e HS |
49 | DECLARE_GLOBAL_DATA_PTR; |
50 | ||
8c66497e HS |
51 | static struct spi_flash *env_flash; |
52 | ||
afa81a77 | 53 | static int setup_flash_device(void) |
7319bcaf | 54 | { |
19c31285 GQ |
55 | #ifdef CONFIG_DM_SPI_FLASH |
56 | struct udevice *new; | |
afa81a77 | 57 | int ret; |
19c31285 | 58 | |
96907c0f | 59 | /* speed and mode will be read from DT */ |
19c31285 | 60 | ret = spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, |
96907c0f | 61 | 0, 0, &new); |
19c31285 GQ |
62 | if (ret) { |
63 | set_default_env("!spi_flash_probe_bus_cs() failed"); | |
64 | return 1; | |
65 | } | |
66 | ||
67 | env_flash = dev_get_uclass_priv(new); | |
68 | #else | |
7319bcaf WW |
69 | |
70 | if (!env_flash) { | |
a3110f01 SB |
71 | env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, |
72 | CONFIG_ENV_SPI_CS, | |
73 | CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); | |
74 | if (!env_flash) { | |
75 | set_default_env("!spi_flash_probe() failed"); | |
76 | return 1; | |
77 | } | |
7319bcaf | 78 | } |
19c31285 | 79 | #endif |
afa81a77 AF |
80 | return 0; |
81 | } | |
82 | ||
83 | #if defined(CONFIG_ENV_OFFSET_REDUND) | |
4415f1d1 | 84 | #ifdef CMD_SAVEENV |
e5bce247 | 85 | static int env_sf_save(void) |
afa81a77 AF |
86 | { |
87 | env_t env_new; | |
88 | char *saved_buffer = NULL, flag = OBSOLETE_FLAG; | |
0b2e5bbe | 89 | u32 saved_size, saved_offset, sector; |
afa81a77 AF |
90 | int ret; |
91 | ||
92 | ret = setup_flash_device(); | |
93 | if (ret) | |
94 | return ret; | |
7319bcaf | 95 | |
7ce1526e MV |
96 | ret = env_export(&env_new); |
97 | if (ret) | |
98 | return ret; | |
cd0f4fa1 | 99 | env_new.flags = ACTIVE_FLAG; |
ea882baf | 100 | |
203e94f6 | 101 | if (gd->env_valid == ENV_VALID) { |
a3110f01 SB |
102 | env_new_offset = CONFIG_ENV_OFFSET_REDUND; |
103 | env_offset = CONFIG_ENV_OFFSET; | |
104 | } else { | |
105 | env_new_offset = CONFIG_ENV_OFFSET; | |
106 | env_offset = CONFIG_ENV_OFFSET_REDUND; | |
107 | } | |
108 | ||
7319bcaf WW |
109 | /* Is the sector larger than the env (i.e. embedded) */ |
110 | if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { | |
111 | saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE; | |
112 | saved_offset = env_new_offset + CONFIG_ENV_SIZE; | |
7dd01744 | 113 | saved_buffer = memalign(ARCH_DMA_MINALIGN, saved_size); |
7319bcaf WW |
114 | if (!saved_buffer) { |
115 | ret = 1; | |
116 | goto done; | |
117 | } | |
118 | ret = spi_flash_read(env_flash, saved_offset, | |
119 | saved_size, saved_buffer); | |
120 | if (ret) | |
121 | goto done; | |
122 | } | |
123 | ||
0b2e5bbe | 124 | sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE); |
7319bcaf WW |
125 | |
126 | puts("Erasing SPI flash..."); | |
127 | ret = spi_flash_erase(env_flash, env_new_offset, | |
128 | sector * CONFIG_ENV_SECT_SIZE); | |
129 | if (ret) | |
130 | goto done; | |
131 | ||
132 | puts("Writing to SPI flash..."); | |
7319bcaf | 133 | |
a3110f01 | 134 | ret = spi_flash_write(env_flash, env_new_offset, |
cd0f4fa1 | 135 | CONFIG_ENV_SIZE, &env_new); |
7319bcaf WW |
136 | if (ret) |
137 | goto done; | |
138 | ||
139 | if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { | |
140 | ret = spi_flash_write(env_flash, saved_offset, | |
141 | saved_size, saved_buffer); | |
142 | if (ret) | |
143 | goto done; | |
144 | } | |
145 | ||
eb58a7fc | 146 | ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags), |
cd0f4fa1 | 147 | sizeof(env_new.flags), &flag); |
a3110f01 SB |
148 | if (ret) |
149 | goto done; | |
7319bcaf | 150 | |
7319bcaf WW |
151 | puts("done\n"); |
152 | ||
203e94f6 | 153 | gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND; |
a3110f01 | 154 | |
2dc55d9e | 155 | printf("Valid environment: %d\n", (int)gd->env_valid); |
a3110f01 | 156 | |
7319bcaf WW |
157 | done: |
158 | if (saved_buffer) | |
159 | free(saved_buffer); | |
eb58a7fc | 160 | |
7319bcaf WW |
161 | return ret; |
162 | } | |
4415f1d1 | 163 | #endif /* CMD_SAVEENV */ |
7319bcaf | 164 | |
e5bce247 | 165 | static void env_sf_load(void) |
7319bcaf WW |
166 | { |
167 | int ret; | |
168 | int crc1_ok = 0, crc2_ok = 0; | |
169 | env_t *tmp_env1 = NULL; | |
170 | env_t *tmp_env2 = NULL; | |
a3110f01 | 171 | env_t *ep = NULL; |
7319bcaf | 172 | |
7dd01744 RB |
173 | tmp_env1 = (env_t *)memalign(ARCH_DMA_MINALIGN, |
174 | CONFIG_ENV_SIZE); | |
175 | tmp_env2 = (env_t *)memalign(ARCH_DMA_MINALIGN, | |
176 | CONFIG_ENV_SIZE); | |
ea882baf | 177 | if (!tmp_env1 || !tmp_env2) { |
ea882baf | 178 | set_default_env("!malloc() failed"); |
2dc55d9e | 179 | goto out; |
7319bcaf WW |
180 | } |
181 | ||
8fee8845 AF |
182 | ret = setup_flash_device(); |
183 | if (ret) | |
2dc55d9e | 184 | goto out; |
7319bcaf WW |
185 | |
186 | ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET, | |
187 | CONFIG_ENV_SIZE, tmp_env1); | |
ea882baf WD |
188 | if (ret) { |
189 | set_default_env("!spi_flash_read() failed"); | |
7319bcaf | 190 | goto err_read; |
ea882baf | 191 | } |
7319bcaf WW |
192 | |
193 | if (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc) | |
194 | crc1_ok = 1; | |
7319bcaf WW |
195 | |
196 | ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET_REDUND, | |
197 | CONFIG_ENV_SIZE, tmp_env2); | |
198 | if (!ret) { | |
199 | if (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc) | |
200 | crc2_ok = 1; | |
7319bcaf WW |
201 | } |
202 | ||
a3110f01 | 203 | if (!crc1_ok && !crc2_ok) { |
a3110f01 | 204 | set_default_env("!bad CRC"); |
2dc55d9e | 205 | goto err_read; |
a3110f01 | 206 | } else if (crc1_ok && !crc2_ok) { |
203e94f6 | 207 | gd->env_valid = ENV_VALID; |
7319bcaf | 208 | } else if (!crc1_ok && crc2_ok) { |
203e94f6 | 209 | gd->env_valid = ENV_REDUND; |
2dc55d9e | 210 | } else if (tmp_env1->flags == ACTIVE_FLAG && |
211 | tmp_env2->flags == OBSOLETE_FLAG) { | |
203e94f6 | 212 | gd->env_valid = ENV_VALID; |
2dc55d9e | 213 | } else if (tmp_env1->flags == OBSOLETE_FLAG && |
214 | tmp_env2->flags == ACTIVE_FLAG) { | |
203e94f6 | 215 | gd->env_valid = ENV_REDUND; |
2dc55d9e | 216 | } else if (tmp_env1->flags == tmp_env2->flags) { |
203e94f6 | 217 | gd->env_valid = ENV_VALID; |
2dc55d9e | 218 | } else if (tmp_env1->flags == 0xFF) { |
203e94f6 | 219 | gd->env_valid = ENV_VALID; |
5e8397dd | 220 | } else if (tmp_env2->flags == 0xFF) { |
203e94f6 | 221 | gd->env_valid = ENV_REDUND; |
7319bcaf WW |
222 | } else { |
223 | /* | |
224 | * this differs from code in env_flash.c, but I think a sane | |
225 | * default path is desirable. | |
226 | */ | |
203e94f6 | 227 | gd->env_valid = ENV_VALID; |
7319bcaf | 228 | } |
ea882baf | 229 | |
203e94f6 | 230 | if (gd->env_valid == ENV_VALID) |
a3110f01 SB |
231 | ep = tmp_env1; |
232 | else | |
233 | ep = tmp_env2; | |
234 | ||
235 | ret = env_import((char *)ep, 0); | |
236 | if (!ret) { | |
237 | error("Cannot import environment: errno = %d\n", errno); | |
9a5d993e | 238 | set_default_env("!env_import failed"); |
7319bcaf | 239 | } |
7319bcaf WW |
240 | |
241 | err_read: | |
242 | spi_flash_free(env_flash); | |
243 | env_flash = NULL; | |
7319bcaf | 244 | out: |
ea882baf WD |
245 | free(tmp_env1); |
246 | free(tmp_env2); | |
7319bcaf WW |
247 | } |
248 | #else | |
4415f1d1 | 249 | #ifdef CMD_SAVEENV |
e5bce247 | 250 | static int env_sf_save(void) |
8c66497e | 251 | { |
0b2e5bbe | 252 | u32 saved_size, saved_offset, sector; |
7ce1526e | 253 | char *saved_buffer = NULL; |
eb58a7fc | 254 | int ret = 1; |
cd0f4fa1 | 255 | env_t env_new; |
19c31285 | 256 | |
afa81a77 AF |
257 | ret = setup_flash_device(); |
258 | if (ret) | |
259 | return ret; | |
8c66497e | 260 | |
5b3375ac MF |
261 | /* Is the sector larger than the env (i.e. embedded) */ |
262 | if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { | |
263 | saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE; | |
264 | saved_offset = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; | |
265 | saved_buffer = malloc(saved_size); | |
eb58a7fc | 266 | if (!saved_buffer) |
5b3375ac | 267 | goto done; |
eb58a7fc | 268 | |
a3110f01 SB |
269 | ret = spi_flash_read(env_flash, saved_offset, |
270 | saved_size, saved_buffer); | |
5b3375ac MF |
271 | if (ret) |
272 | goto done; | |
273 | } | |
274 | ||
7ce1526e MV |
275 | ret = env_export(&env_new); |
276 | if (ret) | |
a3110f01 | 277 | goto done; |
a3110f01 | 278 | |
0b2e5bbe AF |
279 | sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE); |
280 | ||
8c66497e | 281 | puts("Erasing SPI flash..."); |
a3110f01 SB |
282 | ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET, |
283 | sector * CONFIG_ENV_SECT_SIZE); | |
5b3375ac MF |
284 | if (ret) |
285 | goto done; | |
8c66497e HS |
286 | |
287 | puts("Writing to SPI flash..."); | |
a3110f01 | 288 | ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET, |
cd0f4fa1 | 289 | CONFIG_ENV_SIZE, &env_new); |
5b3375ac MF |
290 | if (ret) |
291 | goto done; | |
8c66497e | 292 | |
5b3375ac | 293 | if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) { |
a3110f01 SB |
294 | ret = spi_flash_write(env_flash, saved_offset, |
295 | saved_size, saved_buffer); | |
5b3375ac MF |
296 | if (ret) |
297 | goto done; | |
298 | } | |
299 | ||
300 | ret = 0; | |
8c66497e | 301 | puts("done\n"); |
5b3375ac MF |
302 | |
303 | done: | |
304 | if (saved_buffer) | |
305 | free(saved_buffer); | |
eb58a7fc | 306 | |
5b3375ac | 307 | return ret; |
8c66497e | 308 | } |
4415f1d1 | 309 | #endif /* CMD_SAVEENV */ |
8c66497e | 310 | |
e5bce247 | 311 | static void env_sf_load(void) |
8c66497e HS |
312 | { |
313 | int ret; | |
5a89fa92 | 314 | char *buf = NULL; |
8c66497e | 315 | |
7dd01744 | 316 | buf = (char *)memalign(ARCH_DMA_MINALIGN, CONFIG_ENV_SIZE); |
c041c60c AF |
317 | if (!buf) { |
318 | set_default_env("!malloc() failed"); | |
ea882baf WD |
319 | return; |
320 | } | |
8c66497e | 321 | |
c041c60c AF |
322 | ret = setup_flash_device(); |
323 | if (ret) | |
324 | goto out; | |
325 | ||
ea882baf WD |
326 | ret = spi_flash_read(env_flash, |
327 | CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf); | |
328 | if (ret) { | |
329 | set_default_env("!spi_flash_read() failed"); | |
c041c60c | 330 | goto err_read; |
ea882baf | 331 | } |
8c66497e | 332 | |
ea882baf | 333 | ret = env_import(buf, 1); |
ea882baf | 334 | if (ret) |
203e94f6 | 335 | gd->env_valid = ENV_VALID; |
c041c60c AF |
336 | |
337 | err_read: | |
8c66497e HS |
338 | spi_flash_free(env_flash); |
339 | env_flash = NULL; | |
c041c60c AF |
340 | out: |
341 | free(buf); | |
8c66497e | 342 | } |
7319bcaf | 343 | #endif |
8c66497e | 344 | |
4415f1d1 SG |
345 | U_BOOT_ENV_LOCATION(sf) = { |
346 | .location = ENVL_SPI_FLASH, | |
ac358beb | 347 | ENV_NAME("SPI Flash") |
e5bce247 | 348 | .load = env_sf_load, |
4415f1d1 | 349 | #ifdef CMD_SAVEENV |
e5bce247 | 350 | .save = env_save_ptr(env_sf_save), |
4415f1d1 | 351 | #endif |
4415f1d1 | 352 | }; |