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>
19 char *env_name_spec
= "UBI";
23 DECLARE_GLOBAL_DATA_PTR
;
28 gd
->env_addr
= (ulong
)&default_environment
[0];
34 #ifdef CONFIG_CMD_SAVEENV
35 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
36 static unsigned char env_flags
;
40 ALLOC_CACHE_ALIGN_BUFFER(env_t
, env_new
, 1);
43 ret
= env_export(env_new
);
47 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
48 printf("\n** Cannot find mtd partition \"%s\"\n",
53 env_new
->flags
= ++env_flags
; /* increase the serial */
55 if (gd
->env_valid
== 1) {
56 puts("Writing to redundant UBI... ");
57 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND
,
58 (void *)env_new
, CONFIG_ENV_SIZE
)) {
59 printf("\n** Unable to write env to %s:%s **\n",
61 CONFIG_ENV_UBI_VOLUME_REDUND
);
65 puts("Writing to UBI... ");
66 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME
,
67 (void *)env_new
, CONFIG_ENV_SIZE
)) {
68 printf("\n** Unable to write env to %s:%s **\n",
70 CONFIG_ENV_UBI_VOLUME
);
77 gd
->env_valid
= gd
->env_valid
== 2 ? 1 : 2;
81 #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
84 ALLOC_CACHE_ALIGN_BUFFER(env_t
, env_new
, 1);
87 ret
= env_export(env_new
);
91 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
92 printf("\n** Cannot find mtd partition \"%s\"\n",
97 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME
, (void *)env_new
,
99 printf("\n** Unable to write env to %s:%s **\n",
100 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME
);
107 #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
108 #endif /* CONFIG_CMD_SAVEENV */
110 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
111 void env_relocate_spec(void)
113 ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf
, CONFIG_ENV_SIZE
);
114 ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf
, CONFIG_ENV_SIZE
);
115 int crc1_ok
= 0, crc2_ok
= 0;
116 env_t
*ep
, *tmp_env1
, *tmp_env2
;
118 tmp_env1
= (env_t
*)env1_buf
;
119 tmp_env2
= (env_t
*)env2_buf
;
121 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
122 printf("\n** Cannot find mtd partition \"%s\"\n",
123 CONFIG_ENV_UBI_PART
);
124 set_default_env(NULL
);
128 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME
, (void *)tmp_env1
,
130 printf("\n** Unable to read env from %s:%s **\n",
131 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME
);
134 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND
, (void *)tmp_env2
,
136 printf("\n** Unable to read redundant env from %s:%s **\n",
137 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME_REDUND
);
140 crc1_ok
= crc32(0, tmp_env1
->data
, ENV_SIZE
) == tmp_env1
->crc
;
141 crc2_ok
= crc32(0, tmp_env2
->data
, ENV_SIZE
) == tmp_env2
->crc
;
143 if (!crc1_ok
&& !crc2_ok
) {
144 set_default_env("!bad CRC");
146 } else if (crc1_ok
&& !crc2_ok
) {
148 } else if (!crc1_ok
&& crc2_ok
) {
151 /* both ok - check serial */
152 if (tmp_env1
->flags
== 255 && tmp_env2
->flags
== 0)
154 else if (tmp_env2
->flags
== 255 && tmp_env1
->flags
== 0)
156 else if (tmp_env1
->flags
> tmp_env2
->flags
)
158 else if (tmp_env2
->flags
> tmp_env1
->flags
)
160 else /* flags are equal - almost impossible */
164 if (gd
->env_valid
== 1)
169 env_flags
= ep
->flags
;
170 env_import((char *)ep
, 0);
172 #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
173 void env_relocate_spec(void)
175 ALLOC_CACHE_ALIGN_BUFFER(char, buf
, CONFIG_ENV_SIZE
);
177 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
178 printf("\n** Cannot find mtd partition \"%s\"\n",
179 CONFIG_ENV_UBI_PART
);
180 set_default_env(NULL
);
184 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME
, buf
, CONFIG_ENV_SIZE
)) {
185 printf("\n** Unable to read env from %s:%s **\n",
186 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME
);
187 set_default_env(NULL
);
193 #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */