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git.ipfire.org Git - thirdparty/u-boot.git/blob - env/sata.c
1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
11 #include <environment.h>
12 #include <linux/stddef.h>
18 #if defined(CONFIG_ENV_SIZE_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
19 #error ENV REDUND not supported
22 #if !defined(CONFIG_ENV_OFFSET) || !defined(CONFIG_ENV_SIZE)
23 #error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined
26 __weak
int sata_get_env_dev(void)
28 return CONFIG_SYS_SATA_ENV_DEV
;
31 #ifdef CONFIG_CMD_SAVEENV
32 static inline int write_env(struct blk_desc
*sata
, unsigned long size
,
33 unsigned long offset
, void *buffer
)
35 uint blk_start
, blk_cnt
, n
;
37 blk_start
= ALIGN(offset
, sata
->blksz
) / sata
->blksz
;
38 blk_cnt
= ALIGN(size
, sata
->blksz
) / sata
->blksz
;
40 n
= blk_dwrite(sata
, blk_start
, blk_cnt
, buffer
);
42 return (n
== blk_cnt
) ? 0 : -1;
45 static int env_sata_save(void)
47 ALLOC_CACHE_ALIGN_BUFFER(env_t
, env_new
, 1);
48 struct blk_desc
*sata
= NULL
;
51 if (sata_initialize())
54 env_sata
= sata_get_env_dev();
56 sata
= sata_get_dev(env_sata
);
58 printf("Unknown SATA(%d) device for environment!\n",
63 ret
= env_export(env_new
);
67 printf("Writing to SATA(%d)...", env_sata
);
68 if (write_env(sata
, CONFIG_ENV_SIZE
, CONFIG_ENV_OFFSET
, (u_char
*)env_new
)) {
76 #endif /* CONFIG_CMD_SAVEENV */
78 static inline int read_env(struct blk_desc
*sata
, unsigned long size
,
79 unsigned long offset
, void *buffer
)
81 uint blk_start
, blk_cnt
, n
;
83 blk_start
= ALIGN(offset
, sata
->blksz
) / sata
->blksz
;
84 blk_cnt
= ALIGN(size
, sata
->blksz
) / sata
->blksz
;
86 n
= blk_dread(sata
, blk_start
, blk_cnt
, buffer
);
88 return (n
== blk_cnt
) ? 0 : -1;
91 static void env_sata_load(void)
93 ALLOC_CACHE_ALIGN_BUFFER(char, buf
, CONFIG_ENV_SIZE
);
94 struct blk_desc
*sata
= NULL
;
97 if (sata_initialize())
100 env_sata
= sata_get_env_dev();
102 sata
= sata_get_dev(env_sata
);
104 printf("Unknown SATA(%d) device for environment!\n", env_sata
);
108 if (read_env(sata
, CONFIG_ENV_SIZE
, CONFIG_ENV_OFFSET
, buf
)) {
109 set_default_env(NULL
, 0);
113 return env_import(buf
, 1);
116 U_BOOT_ENV_LOCATION(sata
) = {
117 .location
= ENVL_ESATA
,
119 .load
= env_sata_load
,
120 .save
= env_save_ptr(env_sata_save
),