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git.ipfire.org Git - thirdparty/u-boot.git/blob - env/sf.c
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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>
18 #include <spi_flash.h>
22 #include <dm/device-internal.h>
23 #include <u-boot/crc.h>
25 #ifndef CONFIG_SPL_BUILD
29 #ifdef CONFIG_ENV_OFFSET_REDUND
30 static ulong env_offset
= CONFIG_ENV_OFFSET
;
31 static ulong env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
32 #endif /* CONFIG_ENV_OFFSET_REDUND */
34 DECLARE_GLOBAL_DATA_PTR
;
36 static struct spi_flash
*env_flash
;
38 static int setup_flash_device(void)
40 #ifdef CONFIG_DM_SPI_FLASH
44 /* speed and mode will be read from DT */
45 ret
= spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS
, CONFIG_ENV_SPI_CS
,
46 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
,
49 env_set_default("spi_flash_probe_bus_cs() failed", 0);
53 env_flash
= dev_get_uclass_priv(new);
57 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
,
59 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
61 env_set_default("spi_flash_probe() failed", 0);
69 #if defined(CONFIG_ENV_OFFSET_REDUND)
70 static int env_sf_save(void)
73 char *saved_buffer
= NULL
, flag
= ENV_REDUND_OBSOLETE
;
74 u32 saved_size
, saved_offset
, sector
;
77 ret
= setup_flash_device();
81 ret
= env_export(&env_new
);
84 env_new
.flags
= ENV_REDUND_ACTIVE
;
86 if (gd
->env_valid
== ENV_VALID
) {
87 env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
88 env_offset
= CONFIG_ENV_OFFSET
;
90 env_new_offset
= CONFIG_ENV_OFFSET
;
91 env_offset
= CONFIG_ENV_OFFSET_REDUND
;
94 /* Is the sector larger than the env (i.e. embedded) */
95 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
96 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
97 saved_offset
= env_new_offset
+ CONFIG_ENV_SIZE
;
98 saved_buffer
= memalign(ARCH_DMA_MINALIGN
, saved_size
);
103 ret
= spi_flash_read(env_flash
, saved_offset
,
104 saved_size
, saved_buffer
);
109 sector
= DIV_ROUND_UP(CONFIG_ENV_SIZE
, CONFIG_ENV_SECT_SIZE
);
111 puts("Erasing SPI flash...");
112 ret
= spi_flash_erase(env_flash
, env_new_offset
,
113 sector
* CONFIG_ENV_SECT_SIZE
);
117 puts("Writing to SPI flash...");
119 ret
= spi_flash_write(env_flash
, env_new_offset
,
120 CONFIG_ENV_SIZE
, &env_new
);
124 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
125 ret
= spi_flash_write(env_flash
, saved_offset
,
126 saved_size
, saved_buffer
);
131 ret
= spi_flash_write(env_flash
, env_offset
+ offsetof(env_t
, flags
),
132 sizeof(env_new
.flags
), &flag
);
138 gd
->env_valid
= gd
->env_valid
== ENV_REDUND
? ENV_VALID
: ENV_REDUND
;
140 printf("Valid environment: %d\n", (int)gd
->env_valid
);
149 static int env_sf_load(void)
152 int read1_fail
, read2_fail
;
153 env_t
*tmp_env1
, *tmp_env2
;
155 tmp_env1
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
157 tmp_env2
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
159 if (!tmp_env1
|| !tmp_env2
) {
160 env_set_default("malloc() failed", 0);
165 ret
= setup_flash_device();
169 read1_fail
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET
,
170 CONFIG_ENV_SIZE
, tmp_env1
);
171 read2_fail
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET_REDUND
,
172 CONFIG_ENV_SIZE
, tmp_env2
);
174 ret
= env_import_redund((char *)tmp_env1
, read1_fail
, (char *)tmp_env2
,
177 spi_flash_free(env_flash
);
186 static int env_sf_save(void)
188 u32 saved_size
, saved_offset
, sector
;
189 char *saved_buffer
= NULL
;
193 ret
= setup_flash_device();
197 /* Is the sector larger than the env (i.e. embedded) */
198 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
199 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
200 saved_offset
= CONFIG_ENV_OFFSET
+ CONFIG_ENV_SIZE
;
201 saved_buffer
= malloc(saved_size
);
205 ret
= spi_flash_read(env_flash
, saved_offset
,
206 saved_size
, saved_buffer
);
211 ret
= env_export(&env_new
);
215 sector
= DIV_ROUND_UP(CONFIG_ENV_SIZE
, CONFIG_ENV_SECT_SIZE
);
217 puts("Erasing SPI flash...");
218 ret
= spi_flash_erase(env_flash
, CONFIG_ENV_OFFSET
,
219 sector
* CONFIG_ENV_SECT_SIZE
);
223 puts("Writing to SPI flash...");
224 ret
= spi_flash_write(env_flash
, CONFIG_ENV_OFFSET
,
225 CONFIG_ENV_SIZE
, &env_new
);
229 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
230 ret
= spi_flash_write(env_flash
, saved_offset
,
231 saved_size
, saved_buffer
);
246 static int env_sf_load(void)
251 buf
= (char *)memalign(ARCH_DMA_MINALIGN
, CONFIG_ENV_SIZE
);
253 env_set_default("malloc() failed", 0);
257 ret
= setup_flash_device();
261 ret
= spi_flash_read(env_flash
,
262 CONFIG_ENV_OFFSET
, CONFIG_ENV_SIZE
, buf
);
264 env_set_default("spi_flash_read() failed", 0);
268 ret
= env_import(buf
, 1);
270 gd
->env_valid
= ENV_VALID
;
273 spi_flash_free(env_flash
);
282 #if CONFIG_ENV_ADDR != 0x0
283 __weak
void *env_sf_get_env_addr(void)
285 return (void *)CONFIG_ENV_ADDR
;
289 #if defined(INITENV) && (CONFIG_ENV_ADDR != 0x0)
290 static int env_sf_init(void)
292 env_t
*env_ptr
= (env_t
*)env_sf_get_env_addr();
294 if (crc32(0, env_ptr
->data
, ENV_SIZE
) == env_ptr
->crc
) {
295 gd
->env_addr
= (ulong
)&(env_ptr
->data
);
298 gd
->env_addr
= (ulong
)&default_environment
[0];
306 U_BOOT_ENV_LOCATION(sf
) = {
307 .location
= ENVL_SPI_FLASH
,
308 ENV_NAME("SPI Flash")
310 .save
= CONFIG_IS_ENABLED(SAVEENV
) ? ENV_SAVE_PTR(env_sf_save
) : NULL
,
311 #if defined(INITENV) && (CONFIG_ENV_ADDR != 0x0)