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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 <env_internal.h>
17 #include <spi_flash.h>
20 #include <dm/device-internal.h>
21 #include <u-boot/crc.h>
23 #ifndef CONFIG_SPL_BUILD
28 #ifdef CONFIG_ENV_OFFSET_REDUND
30 static ulong env_offset
= CONFIG_ENV_OFFSET
;
31 static ulong env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
34 #endif /* CONFIG_ENV_OFFSET_REDUND */
36 DECLARE_GLOBAL_DATA_PTR
;
38 static struct spi_flash
*env_flash
;
40 static int setup_flash_device(void)
42 #ifdef CONFIG_DM_SPI_FLASH
46 /* speed and mode will be read from DT */
47 ret
= spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS
, CONFIG_ENV_SPI_CS
,
48 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
,
51 env_set_default("spi_flash_probe_bus_cs() failed", 0);
55 env_flash
= dev_get_uclass_priv(new);
59 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
,
61 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
63 env_set_default("spi_flash_probe() failed", 0);
71 #if defined(CONFIG_ENV_OFFSET_REDUND)
73 static int env_sf_save(void)
76 char *saved_buffer
= NULL
, flag
= ENV_REDUND_OBSOLETE
;
77 u32 saved_size
, saved_offset
, sector
;
80 ret
= setup_flash_device();
84 ret
= env_export(&env_new
);
87 env_new
.flags
= ENV_REDUND_ACTIVE
;
89 if (gd
->env_valid
== ENV_VALID
) {
90 env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
91 env_offset
= CONFIG_ENV_OFFSET
;
93 env_new_offset
= CONFIG_ENV_OFFSET
;
94 env_offset
= CONFIG_ENV_OFFSET_REDUND
;
97 /* Is the sector larger than the env (i.e. embedded) */
98 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
99 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
100 saved_offset
= env_new_offset
+ CONFIG_ENV_SIZE
;
101 saved_buffer
= memalign(ARCH_DMA_MINALIGN
, saved_size
);
106 ret
= spi_flash_read(env_flash
, saved_offset
,
107 saved_size
, saved_buffer
);
112 sector
= DIV_ROUND_UP(CONFIG_ENV_SIZE
, CONFIG_ENV_SECT_SIZE
);
114 puts("Erasing SPI flash...");
115 ret
= spi_flash_erase(env_flash
, env_new_offset
,
116 sector
* CONFIG_ENV_SECT_SIZE
);
120 puts("Writing to SPI flash...");
122 ret
= spi_flash_write(env_flash
, env_new_offset
,
123 CONFIG_ENV_SIZE
, &env_new
);
127 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
128 ret
= spi_flash_write(env_flash
, saved_offset
,
129 saved_size
, saved_buffer
);
134 ret
= spi_flash_write(env_flash
, env_offset
+ offsetof(env_t
, flags
),
135 sizeof(env_new
.flags
), &flag
);
141 gd
->env_valid
= gd
->env_valid
== ENV_REDUND
? ENV_VALID
: ENV_REDUND
;
143 printf("Valid environment: %d\n", (int)gd
->env_valid
);
151 #endif /* CMD_SAVEENV */
153 static int env_sf_load(void)
156 int read1_fail
, read2_fail
;
157 env_t
*tmp_env1
, *tmp_env2
;
159 tmp_env1
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
161 tmp_env2
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
163 if (!tmp_env1
|| !tmp_env2
) {
164 env_set_default("malloc() failed", 0);
169 ret
= setup_flash_device();
173 read1_fail
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET
,
174 CONFIG_ENV_SIZE
, tmp_env1
);
175 read2_fail
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET_REDUND
,
176 CONFIG_ENV_SIZE
, tmp_env2
);
178 ret
= env_import_redund((char *)tmp_env1
, read1_fail
, (char *)tmp_env2
,
181 spi_flash_free(env_flash
);
191 static int env_sf_save(void)
193 u32 saved_size
, saved_offset
, sector
;
194 char *saved_buffer
= NULL
;
198 ret
= setup_flash_device();
202 /* Is the sector larger than the env (i.e. embedded) */
203 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
204 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
205 saved_offset
= CONFIG_ENV_OFFSET
+ CONFIG_ENV_SIZE
;
206 saved_buffer
= malloc(saved_size
);
210 ret
= spi_flash_read(env_flash
, saved_offset
,
211 saved_size
, saved_buffer
);
216 ret
= env_export(&env_new
);
220 sector
= DIV_ROUND_UP(CONFIG_ENV_SIZE
, CONFIG_ENV_SECT_SIZE
);
222 puts("Erasing SPI flash...");
223 ret
= spi_flash_erase(env_flash
, CONFIG_ENV_OFFSET
,
224 sector
* CONFIG_ENV_SECT_SIZE
);
228 puts("Writing to SPI flash...");
229 ret
= spi_flash_write(env_flash
, CONFIG_ENV_OFFSET
,
230 CONFIG_ENV_SIZE
, &env_new
);
234 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
235 ret
= spi_flash_write(env_flash
, saved_offset
,
236 saved_size
, saved_buffer
);
250 #endif /* CMD_SAVEENV */
252 static int env_sf_load(void)
257 buf
= (char *)memalign(ARCH_DMA_MINALIGN
, CONFIG_ENV_SIZE
);
259 env_set_default("malloc() failed", 0);
263 ret
= setup_flash_device();
267 ret
= spi_flash_read(env_flash
,
268 CONFIG_ENV_OFFSET
, CONFIG_ENV_SIZE
, buf
);
270 env_set_default("spi_flash_read() failed", 0);
274 ret
= env_import(buf
, 1);
276 gd
->env_valid
= ENV_VALID
;
279 spi_flash_free(env_flash
);
288 #if CONFIG_ENV_ADDR != 0x0
289 __weak
void *env_sf_get_env_addr(void)
291 return (void *)CONFIG_ENV_ADDR
;
295 #if defined(INITENV) && (CONFIG_ENV_ADDR != 0x0)
296 static int env_sf_init(void)
298 env_t
*env_ptr
= (env_t
*)env_sf_get_env_addr();
300 if (crc32(0, env_ptr
->data
, ENV_SIZE
) == env_ptr
->crc
) {
301 gd
->env_addr
= (ulong
)&(env_ptr
->data
);
304 gd
->env_addr
= (ulong
)&default_environment
[0];
312 U_BOOT_ENV_LOCATION(sf
) = {
313 .location
= ENVL_SPI_FLASH
,
314 ENV_NAME("SPI Flash")
317 .save
= env_save_ptr(env_sf_save
),
319 #if defined(INITENV) && (CONFIG_ENV_ADDR != 0x0)