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git.ipfire.org Git - people/ms/u-boot.git/blob - env/sata.c
2 * (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
12 #include <environment.h>
13 #include <linux/stddef.h>
19 #if defined(CONFIG_ENV_SIZE_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
20 #error ENV REDUND not supported
23 #if !defined(CONFIG_ENV_OFFSET) || !defined(CONFIG_ENV_SIZE)
24 #error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined
27 DECLARE_GLOBAL_DATA_PTR
;
29 __weak
int sata_get_env_dev(void)
31 return CONFIG_SYS_SATA_ENV_DEV
;
34 #ifdef CONFIG_CMD_SAVEENV
35 static inline int write_env(struct blk_desc
*sata
, unsigned long size
,
36 unsigned long offset
, void *buffer
)
38 uint blk_start
, blk_cnt
, n
;
40 blk_start
= ALIGN(offset
, sata
->blksz
) / sata
->blksz
;
41 blk_cnt
= ALIGN(size
, sata
->blksz
) / sata
->blksz
;
43 n
= blk_dwrite(sata
, blk_start
, blk_cnt
, buffer
);
45 return (n
== blk_cnt
) ? 0 : -1;
48 static int env_sata_save(void)
50 ALLOC_CACHE_ALIGN_BUFFER(env_t
, env_new
, 1);
51 struct blk_desc
*sata
= NULL
;
54 if (sata_initialize())
57 env_sata
= sata_get_env_dev();
59 sata
= sata_get_dev(env_sata
);
61 printf("Unknown SATA(%d) device for environment!\n",
66 ret
= env_export(env_new
);
70 printf("Writing to SATA(%d)...", env_sata
);
71 if (write_env(sata
, CONFIG_ENV_SIZE
, CONFIG_ENV_OFFSET
, &env_new
)) {
79 #endif /* CONFIG_CMD_SAVEENV */
81 static inline int read_env(struct blk_desc
*sata
, unsigned long size
,
82 unsigned long offset
, void *buffer
)
84 uint blk_start
, blk_cnt
, n
;
86 blk_start
= ALIGN(offset
, sata
->blksz
) / sata
->blksz
;
87 blk_cnt
= ALIGN(size
, sata
->blksz
) / sata
->blksz
;
89 n
= blk_dread(sata
, blk_start
, blk_cnt
, buffer
);
91 return (n
== blk_cnt
) ? 0 : -1;
94 static void env_sata_load(void)
96 ALLOC_CACHE_ALIGN_BUFFER(char, buf
, CONFIG_ENV_SIZE
);
97 struct blk_desc
*sata
= NULL
;
100 if (sata_initialize())
103 env_sata
= sata_get_env_dev();
105 sata
= sata_get_dev(env_sata
);
107 printf("Unknown SATA(%d) device for environment!\n", env_sata
);
111 if (read_env(sata
, CONFIG_ENV_SIZE
, CONFIG_ENV_OFFSET
, buf
)) {
112 set_default_env(NULL
);
121 U_BOOT_ENV_LOCATION(sata
) = {
122 .location
= ENVL_ESATA
,
124 .load
= env_sata_load
,
125 .save
= env_save_ptr(env_sata_save
),