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git.ipfire.org Git - thirdparty/u-boot.git/blob - env/sf.c
1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2000-2010
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Andreas Heppel <aheppel@sysgo.de>
9 * (C) Copyright 2008 Atmel Corporation
14 #include <environment.h>
17 #include <spi_flash.h>
20 #include <dm/device-internal.h>
22 #ifndef CONFIG_SPL_BUILD
27 #ifdef CONFIG_ENV_OFFSET_REDUND
29 static ulong env_offset
= CONFIG_ENV_OFFSET
;
30 static ulong env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
33 #endif /* CONFIG_ENV_OFFSET_REDUND */
35 DECLARE_GLOBAL_DATA_PTR
;
37 static struct spi_flash
*env_flash
;
39 static int setup_flash_device(void)
41 #ifdef CONFIG_DM_SPI_FLASH
45 /* speed and mode will be read from DT */
46 ret
= spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS
, CONFIG_ENV_SPI_CS
,
47 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
,
50 env_set_default("spi_flash_probe_bus_cs() failed", 0);
54 env_flash
= dev_get_uclass_priv(new);
58 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
,
60 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
62 env_set_default("spi_flash_probe() failed", 0);
70 #if defined(CONFIG_ENV_OFFSET_REDUND)
72 static int env_sf_save(void)
75 char *saved_buffer
= NULL
, flag
= ENV_REDUND_OBSOLETE
;
76 u32 saved_size
, saved_offset
, sector
;
79 ret
= setup_flash_device();
83 ret
= env_export(&env_new
);
86 env_new
.flags
= ENV_REDUND_ACTIVE
;
88 if (gd
->env_valid
== ENV_VALID
) {
89 env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
90 env_offset
= CONFIG_ENV_OFFSET
;
92 env_new_offset
= CONFIG_ENV_OFFSET
;
93 env_offset
= CONFIG_ENV_OFFSET_REDUND
;
96 /* Is the sector larger than the env (i.e. embedded) */
97 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
98 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
99 saved_offset
= env_new_offset
+ CONFIG_ENV_SIZE
;
100 saved_buffer
= memalign(ARCH_DMA_MINALIGN
, saved_size
);
105 ret
= spi_flash_read(env_flash
, saved_offset
,
106 saved_size
, saved_buffer
);
111 sector
= DIV_ROUND_UP(CONFIG_ENV_SIZE
, CONFIG_ENV_SECT_SIZE
);
113 puts("Erasing SPI flash...");
114 ret
= spi_flash_erase(env_flash
, env_new_offset
,
115 sector
* CONFIG_ENV_SECT_SIZE
);
119 puts("Writing to SPI flash...");
121 ret
= spi_flash_write(env_flash
, env_new_offset
,
122 CONFIG_ENV_SIZE
, &env_new
);
126 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
127 ret
= spi_flash_write(env_flash
, saved_offset
,
128 saved_size
, saved_buffer
);
133 ret
= spi_flash_write(env_flash
, env_offset
+ offsetof(env_t
, flags
),
134 sizeof(env_new
.flags
), &flag
);
140 gd
->env_valid
= gd
->env_valid
== ENV_REDUND
? ENV_VALID
: ENV_REDUND
;
142 printf("Valid environment: %d\n", (int)gd
->env_valid
);
150 #endif /* CMD_SAVEENV */
152 static int env_sf_load(void)
155 int read1_fail
, read2_fail
;
156 env_t
*tmp_env1
, *tmp_env2
;
158 tmp_env1
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
160 tmp_env2
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
162 if (!tmp_env1
|| !tmp_env2
) {
163 env_set_default("malloc() failed", 0);
168 ret
= setup_flash_device();
172 read1_fail
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET
,
173 CONFIG_ENV_SIZE
, tmp_env1
);
174 read2_fail
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET_REDUND
,
175 CONFIG_ENV_SIZE
, tmp_env2
);
177 ret
= env_import_redund((char *)tmp_env1
, read1_fail
, (char *)tmp_env2
,
180 spi_flash_free(env_flash
);
190 static int env_sf_save(void)
192 u32 saved_size
, saved_offset
, sector
;
193 char *saved_buffer
= NULL
;
197 ret
= setup_flash_device();
201 /* Is the sector larger than the env (i.e. embedded) */
202 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
203 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
204 saved_offset
= CONFIG_ENV_OFFSET
+ CONFIG_ENV_SIZE
;
205 saved_buffer
= malloc(saved_size
);
209 ret
= spi_flash_read(env_flash
, saved_offset
,
210 saved_size
, saved_buffer
);
215 ret
= env_export(&env_new
);
219 sector
= DIV_ROUND_UP(CONFIG_ENV_SIZE
, CONFIG_ENV_SECT_SIZE
);
221 puts("Erasing SPI flash...");
222 ret
= spi_flash_erase(env_flash
, CONFIG_ENV_OFFSET
,
223 sector
* CONFIG_ENV_SECT_SIZE
);
227 puts("Writing to SPI flash...");
228 ret
= spi_flash_write(env_flash
, CONFIG_ENV_OFFSET
,
229 CONFIG_ENV_SIZE
, &env_new
);
233 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
234 ret
= spi_flash_write(env_flash
, saved_offset
,
235 saved_size
, saved_buffer
);
249 #endif /* CMD_SAVEENV */
251 static int env_sf_load(void)
256 buf
= (char *)memalign(ARCH_DMA_MINALIGN
, CONFIG_ENV_SIZE
);
258 env_set_default("malloc() failed", 0);
262 ret
= setup_flash_device();
266 ret
= spi_flash_read(env_flash
,
267 CONFIG_ENV_OFFSET
, CONFIG_ENV_SIZE
, buf
);
269 env_set_default("spi_flash_read() failed", 0);
273 ret
= env_import(buf
, 1);
275 gd
->env_valid
= ENV_VALID
;
278 spi_flash_free(env_flash
);
287 #ifdef CONFIG_ENV_ADDR
288 __weak
void *env_sf_get_env_addr(void)
290 return (void *)CONFIG_ENV_ADDR
;
294 #if defined(INITENV) && defined(CONFIG_ENV_ADDR)
295 static int env_sf_init(void)
297 env_t
*env_ptr
= (env_t
*)env_sf_get_env_addr();
299 if (crc32(0, env_ptr
->data
, ENV_SIZE
) == env_ptr
->crc
) {
300 gd
->env_addr
= (ulong
)&(env_ptr
->data
);
303 gd
->env_addr
= (ulong
)&default_environment
[0];
311 U_BOOT_ENV_LOCATION(sf
) = {
312 .location
= ENVL_SPI_FLASH
,
313 ENV_NAME("SPI Flash")
316 .save
= env_save_ptr(env_sf_save
),
318 #if defined(INITENV) && defined(CONFIG_ENV_ADDR)