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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>
18 #include <spi_flash.h>
22 #include <asm/cache.h>
23 #include <dm/device-internal.h>
24 #include <u-boot/crc.h>
26 #ifndef CONFIG_SPL_BUILD
30 #ifdef CONFIG_ENV_OFFSET_REDUND
31 static ulong env_offset
= CONFIG_ENV_OFFSET
;
32 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)
71 static int env_sf_save(void)
74 char *saved_buffer
= NULL
, flag
= ENV_REDUND_OBSOLETE
;
75 u32 saved_size
, saved_offset
, sector
;
78 ret
= setup_flash_device();
82 ret
= env_export(&env_new
);
85 env_new
.flags
= ENV_REDUND_ACTIVE
;
87 if (gd
->env_valid
== ENV_VALID
) {
88 env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
89 env_offset
= CONFIG_ENV_OFFSET
;
91 env_new_offset
= CONFIG_ENV_OFFSET
;
92 env_offset
= CONFIG_ENV_OFFSET_REDUND
;
95 /* Is the sector larger than the env (i.e. embedded) */
96 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
97 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
98 saved_offset
= env_new_offset
+ CONFIG_ENV_SIZE
;
99 saved_buffer
= memalign(ARCH_DMA_MINALIGN
, saved_size
);
104 ret
= spi_flash_read(env_flash
, saved_offset
,
105 saved_size
, saved_buffer
);
110 sector
= DIV_ROUND_UP(CONFIG_ENV_SIZE
, CONFIG_ENV_SECT_SIZE
);
112 puts("Erasing SPI flash...");
113 ret
= spi_flash_erase(env_flash
, env_new_offset
,
114 sector
* CONFIG_ENV_SECT_SIZE
);
118 puts("Writing to SPI flash...");
120 ret
= spi_flash_write(env_flash
, env_new_offset
,
121 CONFIG_ENV_SIZE
, &env_new
);
125 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
126 ret
= spi_flash_write(env_flash
, saved_offset
,
127 saved_size
, saved_buffer
);
132 ret
= spi_flash_write(env_flash
, env_offset
+ offsetof(env_t
, flags
),
133 sizeof(env_new
.flags
), &flag
);
139 gd
->env_valid
= gd
->env_valid
== ENV_REDUND
? ENV_VALID
: ENV_REDUND
;
141 printf("Valid environment: %d\n", (int)gd
->env_valid
);
150 static int env_sf_load(void)
153 int read1_fail
, read2_fail
;
154 env_t
*tmp_env1
, *tmp_env2
;
156 tmp_env1
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
158 tmp_env2
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
160 if (!tmp_env1
|| !tmp_env2
) {
161 env_set_default("malloc() failed", 0);
166 ret
= setup_flash_device();
170 read1_fail
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET
,
171 CONFIG_ENV_SIZE
, tmp_env1
);
172 read2_fail
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET_REDUND
,
173 CONFIG_ENV_SIZE
, tmp_env2
);
175 ret
= env_import_redund((char *)tmp_env1
, read1_fail
, (char *)tmp_env2
,
178 spi_flash_free(env_flash
);
187 static int env_sf_save(void)
189 u32 saved_size
, saved_offset
, sector
;
190 char *saved_buffer
= NULL
;
194 ret
= setup_flash_device();
198 /* Is the sector larger than the env (i.e. embedded) */
199 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
200 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
201 saved_offset
= CONFIG_ENV_OFFSET
+ CONFIG_ENV_SIZE
;
202 saved_buffer
= malloc(saved_size
);
206 ret
= spi_flash_read(env_flash
, saved_offset
,
207 saved_size
, saved_buffer
);
212 ret
= env_export(&env_new
);
216 sector
= DIV_ROUND_UP(CONFIG_ENV_SIZE
, CONFIG_ENV_SECT_SIZE
);
218 puts("Erasing SPI flash...");
219 ret
= spi_flash_erase(env_flash
, CONFIG_ENV_OFFSET
,
220 sector
* CONFIG_ENV_SECT_SIZE
);
224 puts("Writing to SPI flash...");
225 ret
= spi_flash_write(env_flash
, CONFIG_ENV_OFFSET
,
226 CONFIG_ENV_SIZE
, &env_new
);
230 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
231 ret
= spi_flash_write(env_flash
, saved_offset
,
232 saved_size
, saved_buffer
);
247 static int env_sf_load(void)
252 buf
= (char *)memalign(ARCH_DMA_MINALIGN
, CONFIG_ENV_SIZE
);
254 env_set_default("malloc() failed", 0);
258 ret
= setup_flash_device();
262 ret
= spi_flash_read(env_flash
,
263 CONFIG_ENV_OFFSET
, CONFIG_ENV_SIZE
, buf
);
265 env_set_default("spi_flash_read() failed", 0);
269 ret
= env_import(buf
, 1);
271 gd
->env_valid
= ENV_VALID
;
274 spi_flash_free(env_flash
);
283 #if CONFIG_ENV_ADDR != 0x0
284 __weak
void *env_sf_get_env_addr(void)
286 return (void *)CONFIG_ENV_ADDR
;
290 #if defined(INITENV) && (CONFIG_ENV_ADDR != 0x0)
291 static int env_sf_init(void)
293 env_t
*env_ptr
= (env_t
*)env_sf_get_env_addr();
295 if (crc32(0, env_ptr
->data
, ENV_SIZE
) == env_ptr
->crc
) {
296 gd
->env_addr
= (ulong
)&(env_ptr
->data
);
299 gd
->env_addr
= (ulong
)&default_environment
[0];
307 U_BOOT_ENV_LOCATION(sf
) = {
308 .location
= ENVL_SPI_FLASH
,
309 ENV_NAME("SPI Flash")
311 .save
= CONFIG_IS_ENABLED(SAVEENV
) ? ENV_SAVE_PTR(env_sf_save
) : NULL
,
312 #if defined(INITENV) && (CONFIG_ENV_ADDR != 0x0)