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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
= memalign(ARCH_DMA_MINALIGN
, 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
*)memalign(ARCH_DMA_MINALIGN
,
147 tmp_env2
= (env_t
*)memalign(ARCH_DMA_MINALIGN
,
149 if (!tmp_env1
|| !tmp_env2
) {
150 set_default_env("!malloc() failed");
154 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
, CONFIG_ENV_SPI_CS
,
155 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
157 set_default_env("!spi_flash_probe() failed");
161 ret
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET
,
162 CONFIG_ENV_SIZE
, tmp_env1
);
164 set_default_env("!spi_flash_read() failed");
168 if (crc32(0, tmp_env1
->data
, ENV_SIZE
) == tmp_env1
->crc
)
171 ret
= spi_flash_read(env_flash
, CONFIG_ENV_OFFSET_REDUND
,
172 CONFIG_ENV_SIZE
, tmp_env2
);
174 if (crc32(0, tmp_env2
->data
, ENV_SIZE
) == tmp_env2
->crc
)
178 if (!crc1_ok
&& !crc2_ok
) {
179 set_default_env("!bad CRC");
181 } else if (crc1_ok
&& !crc2_ok
) {
183 } else if (!crc1_ok
&& crc2_ok
) {
185 } else if (tmp_env1
->flags
== ACTIVE_FLAG
&&
186 tmp_env2
->flags
== OBSOLETE_FLAG
) {
188 } else if (tmp_env1
->flags
== OBSOLETE_FLAG
&&
189 tmp_env2
->flags
== ACTIVE_FLAG
) {
191 } else if (tmp_env1
->flags
== tmp_env2
->flags
) {
193 } else if (tmp_env1
->flags
== 0xFF) {
195 } else if (tmp_env2
->flags
== 0xFF) {
199 * this differs from code in env_flash.c, but I think a sane
200 * default path is desirable.
205 if (gd
->env_valid
== 1)
210 ret
= env_import((char *)ep
, 0);
212 error("Cannot import environment: errno = %d\n", errno
);
213 set_default_env("env_import failed");
217 spi_flash_free(env_flash
);
226 u32 saved_size
, saved_offset
, sector
= 1;
227 char *saved_buffer
= NULL
;
232 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
,
234 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
236 set_default_env("!spi_flash_probe() failed");
241 /* Is the sector larger than the env (i.e. embedded) */
242 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
243 saved_size
= CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_SIZE
;
244 saved_offset
= CONFIG_ENV_OFFSET
+ CONFIG_ENV_SIZE
;
245 saved_buffer
= malloc(saved_size
);
249 ret
= spi_flash_read(env_flash
, saved_offset
,
250 saved_size
, saved_buffer
);
255 if (CONFIG_ENV_SIZE
> CONFIG_ENV_SECT_SIZE
) {
256 sector
= CONFIG_ENV_SIZE
/ CONFIG_ENV_SECT_SIZE
;
257 if (CONFIG_ENV_SIZE
% CONFIG_ENV_SECT_SIZE
)
261 ret
= env_export(&env_new
);
265 puts("Erasing SPI flash...");
266 ret
= spi_flash_erase(env_flash
, CONFIG_ENV_OFFSET
,
267 sector
* CONFIG_ENV_SECT_SIZE
);
271 puts("Writing to SPI flash...");
272 ret
= spi_flash_write(env_flash
, CONFIG_ENV_OFFSET
,
273 CONFIG_ENV_SIZE
, &env_new
);
277 if (CONFIG_ENV_SECT_SIZE
> CONFIG_ENV_SIZE
) {
278 ret
= spi_flash_write(env_flash
, saved_offset
,
279 saved_size
, saved_buffer
);
294 void env_relocate_spec(void)
299 buf
= (char *)memalign(ARCH_DMA_MINALIGN
, CONFIG_ENV_SIZE
);
300 env_flash
= spi_flash_probe(CONFIG_ENV_SPI_BUS
, CONFIG_ENV_SPI_CS
,
301 CONFIG_ENV_SPI_MAX_HZ
, CONFIG_ENV_SPI_MODE
);
303 set_default_env("!spi_flash_probe() failed");
309 ret
= spi_flash_read(env_flash
,
310 CONFIG_ENV_OFFSET
, CONFIG_ENV_SIZE
, buf
);
312 set_default_env("!spi_flash_read() failed");
316 ret
= env_import(buf
, 1);
320 spi_flash_free(env_flash
);
329 /* SPI flash isn't usable before relocation */
330 gd
->env_addr
= (ulong
)&default_environment
[0];