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git.ipfire.org Git - people/ms/u-boot.git/blob - common/env_sf.c
2 * (C) Copyright 2000-2010
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
6 * Andreas Heppel <aheppel@sysgo.de>
8 * (C) Copyright 2008 Atmel Corporation
10 * SPDX-License-Identifier: GPL-2.0+
13 #include <environment.h>
16 #include <spi_flash.h>
20 #ifndef CONFIG_ENV_SPI_BUS
21 # define CONFIG_ENV_SPI_BUS 0
23 #ifndef CONFIG_ENV_SPI_CS
24 # define CONFIG_ENV_SPI_CS 0
26 #ifndef CONFIG_ENV_SPI_MAX_HZ
27 # define CONFIG_ENV_SPI_MAX_HZ 1000000
29 #ifndef CONFIG_ENV_SPI_MODE
30 # define CONFIG_ENV_SPI_MODE SPI_MODE_3
33 #ifdef CONFIG_ENV_OFFSET_REDUND
34 static ulong env_offset
= CONFIG_ENV_OFFSET
;
35 static ulong env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
38 #define OBSOLETE_FLAG 0
39 #endif /* CONFIG_ENV_OFFSET_REDUND */
41 DECLARE_GLOBAL_DATA_PTR
;
43 char *env_name_spec
= "SPI Flash";
45 static struct spi_flash
*env_flash
;
47 #if defined(CONFIG_ENV_OFFSET_REDUND)
51 char *saved_buffer
= NULL
, flag
= OBSOLETE_FLAG
;
52 u32 saved_size
, saved_offset
, sector
= 1;
56 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
,
58 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
60 set_default_env("!spi_flash_probe() failed");
65 ret
= env_export(&env_new
);
68 env_new
.flags
= ACTIVE_FLAG
;
70 if (gd
->env_valid
== 1) {
71 env_new_offset
= CONFIG_ENV_OFFSET_REDUND
;
72 env_offset
= CONFIG_ENV_OFFSET
;
74 env_new_offset
= CONFIG_ENV_OFFSET
;
75 env_offset
= CONFIG_ENV_OFFSET_REDUND
;
78 /* Is the sector larger than the env (i.e. embedded) */
79 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
80 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
81 saved_offset
= env_new_offset
+ CONFIG_ENV_SIZE
;
82 saved_buffer
= malloc(saved_size
);
87 ret
= spi_flash_read(env_flash
, saved_offset
,
88 saved_size
, saved_buffer
);
93 if (CONFIG_ENV_SIZE
> CONFIG_ENV_SECT_SIZE
) {
94 sector
= CONFIG_ENV_SIZE
/ CONFIG_ENV_SECT_SIZE
;
95 if (CONFIG_ENV_SIZE
% CONFIG_ENV_SECT_SIZE
)
99 puts("Erasing SPI flash...");
100 ret
= spi_flash_erase(env_flash
, env_new_offset
,
101 sector
* CONFIG_ENV_SECT_SIZE
);
105 puts("Writing to SPI flash...");
107 ret
= spi_flash_write(env_flash
, env_new_offset
,
108 CONFIG_ENV_SIZE
, &env_new
);
112 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
113 ret
= spi_flash_write(env_flash
, saved_offset
,
114 saved_size
, saved_buffer
);
119 ret
= spi_flash_write(env_flash
, env_offset
+ offsetof(env_t
, flags
),
120 sizeof(env_new
.flags
), &flag
);
126 gd
->env_valid
= gd
->env_valid
== 2 ? 1 : 2;
128 printf("Valid environment: %d\n", (int)gd
->env_valid
);
137 void env_relocate_spec(void)
140 int crc1_ok
= 0, crc2_ok
= 0;
141 env_t
*tmp_env1
= NULL
;
142 env_t
*tmp_env2
= NULL
;
145 tmp_env1
= (env_t
*)malloc(CONFIG_ENV_SIZE
);
146 tmp_env2
= (env_t
*)malloc(CONFIG_ENV_SIZE
);
148 if (!tmp_env1
|| !tmp_env2
) {
149 set_default_env("!malloc() failed");
153 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
, CONFIG_ENV_SPI_CS
,
154 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
156 set_default_env("!spi_flash_probe() failed");
160 ret
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET
,
161 CONFIG_ENV_SIZE
, tmp_env1
);
163 set_default_env("!spi_flash_read() failed");
167 if (crc32(0, tmp_env1
->data
, ENV_SIZE
) == tmp_env1
->crc
)
170 ret
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET_REDUND
,
171 CONFIG_ENV_SIZE
, tmp_env2
);
173 if (crc32(0, tmp_env2
->data
, ENV_SIZE
) == tmp_env2
->crc
)
177 if (!crc1_ok
&& !crc2_ok
) {
178 set_default_env("!bad CRC");
180 } else if (crc1_ok
&& !crc2_ok
) {
182 } else if (!crc1_ok
&& crc2_ok
) {
184 } else if (tmp_env1
->flags
== ACTIVE_FLAG
&&
185 tmp_env2
->flags
== OBSOLETE_FLAG
) {
187 } else if (tmp_env1
->flags
== OBSOLETE_FLAG
&&
188 tmp_env2
->flags
== ACTIVE_FLAG
) {
190 } else if (tmp_env1
->flags
== tmp_env2
->flags
) {
192 } else if (tmp_env1
->flags
== 0xFF) {
196 * this differs from code in env_flash.c, but I think a sane
197 * default path is desirable.
202 if (gd
->env_valid
== 1)
207 ret
= env_import((char *)ep
, 0);
209 error("Cannot import environment: errno = %d\n", errno
);
210 set_default_env("env_import failed");
214 spi_flash_free(env_flash
);
223 u32 saved_size
, saved_offset
, sector
= 1;
224 char *saved_buffer
= NULL
;
229 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
,
231 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
233 set_default_env("!spi_flash_probe() failed");
238 /* Is the sector larger than the env (i.e. embedded) */
239 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
240 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
241 saved_offset
= CONFIG_ENV_OFFSET
+ CONFIG_ENV_SIZE
;
242 saved_buffer
= malloc(saved_size
);
246 ret
= spi_flash_read(env_flash
, saved_offset
,
247 saved_size
, saved_buffer
);
252 if (CONFIG_ENV_SIZE
> CONFIG_ENV_SECT_SIZE
) {
253 sector
= CONFIG_ENV_SIZE
/ CONFIG_ENV_SECT_SIZE
;
254 if (CONFIG_ENV_SIZE
% CONFIG_ENV_SECT_SIZE
)
258 ret
= env_export(&env_new
);
262 puts("Erasing SPI flash...");
263 ret
= spi_flash_erase(env_flash
, CONFIG_ENV_OFFSET
,
264 sector
* CONFIG_ENV_SECT_SIZE
);
268 puts("Writing to SPI flash...");
269 ret
= spi_flash_write(env_flash
, CONFIG_ENV_OFFSET
,
270 CONFIG_ENV_SIZE
, &env_new
);
274 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
275 ret
= spi_flash_write(env_flash
, saved_offset
,
276 saved_size
, saved_buffer
);
291 void env_relocate_spec(void)
296 buf
= (char *)malloc(CONFIG_ENV_SIZE
);
297 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
, CONFIG_ENV_SPI_CS
,
298 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
300 set_default_env("!spi_flash_probe() failed");
306 ret
= spi_flash_read(env_flash
,
307 CONFIG_ENV_OFFSET
, CONFIG_ENV_SIZE
, buf
);
309 set_default_env("!spi_flash_read() failed");
313 ret
= env_import(buf
, 1);
317 spi_flash_free(env_flash
);
326 /* SPI flash isn't usable before relocation */
327 gd
->env_addr
= (ulong
)&default_environment
[0];