2 * (c) Copyright 2012 by National Instruments,
3 * Joe Hershberger <joe.hershberger@ni.com>
5 * SPDX-License-Identifier: GPL-2.0+
11 #include <environment.h>
16 #include <ubi_uboot.h>
21 DECLARE_GLOBAL_DATA_PTR
;
23 #ifdef CONFIG_CMD_SAVEENV
24 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
25 static int env_ubi_save(void)
27 ALLOC_CACHE_ALIGN_BUFFER(env_t
, env_new
, 1);
30 ret
= env_export(env_new
);
34 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
35 printf("\n** Cannot find mtd partition \"%s\"\n",
40 if (gd
->env_valid
== ENV_VALID
) {
41 puts("Writing to redundant UBI... ");
42 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND
,
43 (void *)env_new
, CONFIG_ENV_SIZE
)) {
44 printf("\n** Unable to write env to %s:%s **\n",
46 CONFIG_ENV_UBI_VOLUME_REDUND
);
50 puts("Writing to UBI... ");
51 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME
,
52 (void *)env_new
, CONFIG_ENV_SIZE
)) {
53 printf("\n** Unable to write env to %s:%s **\n",
55 CONFIG_ENV_UBI_VOLUME
);
62 gd
->env_valid
= gd
->env_valid
== ENV_REDUND
? ENV_VALID
: ENV_REDUND
;
66 #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
67 static int env_ubi_save(void)
69 ALLOC_CACHE_ALIGN_BUFFER(env_t
, env_new
, 1);
72 ret
= env_export(env_new
);
76 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
77 printf("\n** Cannot find mtd partition \"%s\"\n",
82 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME
, (void *)env_new
,
84 printf("\n** Unable to write env to %s:%s **\n",
85 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME
);
92 #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
93 #endif /* CONFIG_CMD_SAVEENV */
95 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
96 static void env_ubi_load(void)
98 ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf
, CONFIG_ENV_SIZE
);
99 ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf
, CONFIG_ENV_SIZE
);
100 env_t
*tmp_env1
, *tmp_env2
;
103 * In case we have restarted u-boot there is a chance that buffer
104 * contains old environment (from the previous boot).
105 * If UBI volume is zero size, ubi_volume_read() doesn't modify the
107 * We need to clear buffer manually here, so the invalid CRC will
108 * cause setting default environment as expected.
110 memset(env1_buf
, 0x0, CONFIG_ENV_SIZE
);
111 memset(env2_buf
, 0x0, CONFIG_ENV_SIZE
);
113 tmp_env1
= (env_t
*)env1_buf
;
114 tmp_env2
= (env_t
*)env2_buf
;
116 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
117 printf("\n** Cannot find mtd partition \"%s\"\n",
118 CONFIG_ENV_UBI_PART
);
119 set_default_env(NULL
);
123 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME
, (void *)tmp_env1
,
125 printf("\n** Unable to read env from %s:%s **\n",
126 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME
);
129 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND
, (void *)tmp_env2
,
131 printf("\n** Unable to read redundant env from %s:%s **\n",
132 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME_REDUND
);
135 env_import_redund((char *)tmp_env1
, (char *)tmp_env2
);
137 #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
138 static void env_ubi_load(void)
140 ALLOC_CACHE_ALIGN_BUFFER(char, buf
, CONFIG_ENV_SIZE
);
143 * In case we have restarted u-boot there is a chance that buffer
144 * contains old environment (from the previous boot).
145 * If UBI volume is zero size, ubi_volume_read() doesn't modify the
147 * We need to clear buffer manually here, so the invalid CRC will
148 * cause setting default environment as expected.
150 memset(buf
, 0x0, CONFIG_ENV_SIZE
);
152 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
153 printf("\n** Cannot find mtd partition \"%s\"\n",
154 CONFIG_ENV_UBI_PART
);
155 set_default_env(NULL
);
159 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME
, buf
, CONFIG_ENV_SIZE
)) {
160 printf("\n** Unable to read env from %s:%s **\n",
161 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME
);
162 set_default_env(NULL
);
168 #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
170 U_BOOT_ENV_LOCATION(ubi
) = {
171 .location
= ENVL_UBI
,
172 .load
= env_ubi_load
,
173 .save
= env_save_ptr(env_ubi_save
),