]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/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 char *env_name_spec
= "SATA";
29 DECLARE_GLOBAL_DATA_PTR
;
31 __weak
int sata_get_env_dev(void)
33 return CONFIG_SYS_SATA_ENV_DEV
;
39 gd
->env_addr
= (ulong
)&default_environment
[0];
45 #ifdef CONFIG_CMD_SAVEENV
46 static inline int write_env(struct blk_desc
*sata
, unsigned long size
,
47 unsigned long offset
, void *buffer
)
49 uint blk_start
, blk_cnt
, n
;
51 blk_start
= ALIGN(offset
, sata
->blksz
) / sata
->blksz
;
52 blk_cnt
= ALIGN(size
, sata
->blksz
) / sata
->blksz
;
54 n
= blk_dwrite(sata
, blk_start
, blk_cnt
, buffer
);
56 return (n
== blk_cnt
) ? 0 : -1;
61 ALLOC_CACHE_ALIGN_BUFFER(env_t
, env_new
, 1);
62 struct blk_desc
*sata
= NULL
;
65 if (sata_initialize())
68 env_sata
= sata_get_env_dev();
70 sata
= sata_get_dev(env_sata
);
72 printf("Unknown SATA(%d) device for environment!\n",
77 ret
= env_export(env_new
);
81 printf("Writing to SATA(%d)...", env_sata
);
82 if (write_env(sata
, CONFIG_ENV_SIZE
, CONFIG_ENV_OFFSET
, &env_new
)) {
90 #endif /* CONFIG_CMD_SAVEENV */
92 static inline int read_env(struct blk_desc
*sata
, unsigned long size
,
93 unsigned long offset
, void *buffer
)
95 uint blk_start
, blk_cnt
, n
;
97 blk_start
= ALIGN(offset
, sata
->blksz
) / sata
->blksz
;
98 blk_cnt
= ALIGN(size
, sata
->blksz
) / sata
->blksz
;
100 n
= blk_dread(sata
, blk_start
, blk_cnt
, buffer
);
102 return (n
== blk_cnt
) ? 0 : -1;
105 void env_relocate_spec(void)
107 ALLOC_CACHE_ALIGN_BUFFER(char, buf
, CONFIG_ENV_SIZE
);
108 struct blk_desc
*sata
= NULL
;
111 if (sata_initialize())
114 env_sata
= sata_get_env_dev();
116 sata
= sata_get_dev(env_sata
);
118 printf("Unknown SATA(%d) device for environment!\n",
123 if (read_env(sata
, CONFIG_ENV_SIZE
, CONFIG_ENV_OFFSET
, buf
))
124 return set_default_env(NULL
);