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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
13 #include <environment.h>
16 #include <spi_flash.h>
19 #include <dm/device-internal.h>
21 #ifndef CONFIG_ENV_SPI_BUS
22 # define CONFIG_ENV_SPI_BUS CONFIG_SF_DEFAULT_BUS
24 #ifndef CONFIG_ENV_SPI_CS
25 # define CONFIG_ENV_SPI_CS CONFIG_SF_DEFAULT_CS
27 #ifndef CONFIG_ENV_SPI_MAX_HZ
28 # define CONFIG_ENV_SPI_MAX_HZ CONFIG_SF_DEFAULT_SPEED
30 #ifndef CONFIG_ENV_SPI_MODE
31 # define CONFIG_ENV_SPI_MODE CONFIG_SF_DEFAULT_MODE
34 #ifndef CONFIG_SPL_BUILD
39 #ifdef CONFIG_ENV_OFFSET_REDUND
41 static ulong env_offset
= CONFIG_ENV_OFFSET
;
42 static ulong env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
46 #define OBSOLETE_FLAG 0
47 #endif /* CONFIG_ENV_OFFSET_REDUND */
49 DECLARE_GLOBAL_DATA_PTR
;
51 static struct spi_flash
*env_flash
;
53 static int setup_flash_device(void)
55 #ifdef CONFIG_DM_SPI_FLASH
59 /* speed and mode will be read from DT */
60 ret
= spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS
, CONFIG_ENV_SPI_CS
,
61 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
,
64 set_default_env("spi_flash_probe_bus_cs() failed", 0);
68 env_flash
= dev_get_uclass_priv(new);
72 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
,
74 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
76 set_default_env("spi_flash_probe() failed", 0);
84 #if defined(CONFIG_ENV_OFFSET_REDUND)
86 static int env_sf_save(void)
89 char *saved_buffer
= NULL
, flag
= OBSOLETE_FLAG
;
90 u32 saved_size
, saved_offset
, sector
;
93 ret
= setup_flash_device();
97 ret
= env_export(&env_new
);
100 env_new
.flags
= ACTIVE_FLAG
;
102 if (gd
->env_valid
== ENV_VALID
) {
103 env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
104 env_offset
= CONFIG_ENV_OFFSET
;
106 env_new_offset
= CONFIG_ENV_OFFSET
;
107 env_offset
= CONFIG_ENV_OFFSET_REDUND
;
110 /* Is the sector larger than the env (i.e. embedded) */
111 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
112 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
113 saved_offset
= env_new_offset
+ CONFIG_ENV_SIZE
;
114 saved_buffer
= memalign(ARCH_DMA_MINALIGN
, saved_size
);
119 ret
= spi_flash_read(env_flash
, saved_offset
,
120 saved_size
, saved_buffer
);
125 sector
= DIV_ROUND_UP(CONFIG_ENV_SIZE
, CONFIG_ENV_SECT_SIZE
);
127 puts("Erasing SPI flash...");
128 ret
= spi_flash_erase(env_flash
, env_new_offset
,
129 sector
* CONFIG_ENV_SECT_SIZE
);
133 puts("Writing to SPI flash...");
135 ret
= spi_flash_write(env_flash
, env_new_offset
,
136 CONFIG_ENV_SIZE
, &env_new
);
140 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
141 ret
= spi_flash_write(env_flash
, saved_offset
,
142 saved_size
, saved_buffer
);
147 ret
= spi_flash_write(env_flash
, env_offset
+ offsetof(env_t
, flags
),
148 sizeof(env_new
.flags
), &flag
);
154 gd
->env_valid
= gd
->env_valid
== ENV_REDUND
? ENV_VALID
: ENV_REDUND
;
156 printf("Valid environment: %d\n", (int)gd
->env_valid
);
164 #endif /* CMD_SAVEENV */
166 static int env_sf_load(void)
169 int read1_fail
, read2_fail
;
170 env_t
*tmp_env1
, *tmp_env2
;
172 tmp_env1
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
174 tmp_env2
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
176 if (!tmp_env1
|| !tmp_env2
) {
177 set_default_env("malloc() failed", 0);
182 ret
= setup_flash_device();
186 read1_fail
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET
,
187 CONFIG_ENV_SIZE
, tmp_env1
);
188 read2_fail
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET_REDUND
,
189 CONFIG_ENV_SIZE
, tmp_env2
);
191 ret
= env_import_redund((char *)tmp_env1
, read1_fail
, (char *)tmp_env2
,
194 spi_flash_free(env_flash
);
204 static int env_sf_save(void)
206 u32 saved_size
, saved_offset
, sector
;
207 char *saved_buffer
= NULL
;
211 ret
= setup_flash_device();
215 /* Is the sector larger than the env (i.e. embedded) */
216 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
217 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
218 saved_offset
= CONFIG_ENV_OFFSET
+ CONFIG_ENV_SIZE
;
219 saved_buffer
= malloc(saved_size
);
223 ret
= spi_flash_read(env_flash
, saved_offset
,
224 saved_size
, saved_buffer
);
229 ret
= env_export(&env_new
);
233 sector
= DIV_ROUND_UP(CONFIG_ENV_SIZE
, CONFIG_ENV_SECT_SIZE
);
235 puts("Erasing SPI flash...");
236 ret
= spi_flash_erase(env_flash
, CONFIG_ENV_OFFSET
,
237 sector
* CONFIG_ENV_SECT_SIZE
);
241 puts("Writing to SPI flash...");
242 ret
= spi_flash_write(env_flash
, CONFIG_ENV_OFFSET
,
243 CONFIG_ENV_SIZE
, &env_new
);
247 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
248 ret
= spi_flash_write(env_flash
, saved_offset
,
249 saved_size
, saved_buffer
);
263 #endif /* CMD_SAVEENV */
265 static int env_sf_load(void)
270 buf
= (char *)memalign(ARCH_DMA_MINALIGN
, CONFIG_ENV_SIZE
);
272 set_default_env("malloc() failed", 0);
276 ret
= setup_flash_device();
280 ret
= spi_flash_read(env_flash
,
281 CONFIG_ENV_OFFSET
, CONFIG_ENV_SIZE
, buf
);
283 set_default_env("spi_flash_read() failed", 0);
287 ret
= env_import(buf
, 1);
289 gd
->env_valid
= ENV_VALID
;
292 spi_flash_free(env_flash
);
301 #if defined(INITENV) && defined(CONFIG_ENV_ADDR)
302 static int env_sf_init(void)
304 env_t
*env_ptr
= (env_t
*)(CONFIG_ENV_ADDR
);
306 if (crc32(0, env_ptr
->data
, ENV_SIZE
) == env_ptr
->crc
) {
307 gd
->env_addr
= (ulong
)&(env_ptr
->data
);
310 gd
->env_addr
= (ulong
)&default_environment
[0];
318 U_BOOT_ENV_LOCATION(sf
) = {
319 .location
= ENVL_SPI_FLASH
,
320 ENV_NAME("SPI Flash")
323 .save
= env_save_ptr(env_sf_save
),
325 #if defined(INITENV) && defined(CONFIG_ENV_ADDR)