2 * (c) Copyright 2012 by National Instruments,
3 * Joe Hershberger <joe.hershberger@ni.com>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <environment.h>
31 #include <ubi_uboot.h>
34 char *env_name_spec
= "UBI";
38 DECLARE_GLOBAL_DATA_PTR
;
43 gd
->env_addr
= (ulong
)&default_environment
[0];
49 #ifdef CONFIG_CMD_SAVEENV
50 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
51 static unsigned char env_flags
;
55 ALLOC_CACHE_ALIGN_BUFFER(env_t
, env_new
, 1);
59 res
= (char *)&env_new
->data
;
60 len
= hexport_r(&env_htab
, '\0', 0, &res
, ENV_SIZE
, 0, NULL
);
62 error("Cannot export environment: errno = %d\n", errno
);
66 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
67 printf("\n** Cannot find mtd partition \"%s\"\n",
72 env_new
->crc
= crc32(0, env_new
->data
, ENV_SIZE
);
73 env_new
->flags
= ++env_flags
; /* increase the serial */
75 if (gd
->env_valid
== 1) {
76 puts("Writing to redundant UBI... ");
77 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND
,
78 (void *)env_new
, CONFIG_ENV_SIZE
)) {
79 printf("\n** Unable to write env to %s:%s **\n",
81 CONFIG_ENV_UBI_VOLUME_REDUND
);
85 puts("Writing to UBI... ");
86 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME
,
87 (void *)env_new
, CONFIG_ENV_SIZE
)) {
88 printf("\n** Unable to write env to %s:%s **\n",
90 CONFIG_ENV_UBI_VOLUME
);
97 gd
->env_valid
= gd
->env_valid
== 2 ? 1 : 2;
101 #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
104 ALLOC_CACHE_ALIGN_BUFFER(env_t
, env_new
, 1);
108 res
= (char *)&env_new
->data
;
109 len
= hexport_r(&env_htab
, '\0', 0, &res
, ENV_SIZE
, 0, NULL
);
111 error("Cannot export environment: errno = %d\n", errno
);
115 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
116 printf("\n** Cannot find mtd partition \"%s\"\n",
117 CONFIG_ENV_UBI_PART
);
121 env_new
->crc
= crc32(0, env_new
->data
, ENV_SIZE
);
123 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME
, (void *)env_new
,
125 printf("\n** Unable to write env to %s:%s **\n",
126 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME
);
133 #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
134 #endif /* CONFIG_CMD_SAVEENV */
136 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
137 void env_relocate_spec(void)
139 ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf
, CONFIG_ENV_SIZE
);
140 ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf
, CONFIG_ENV_SIZE
);
141 int crc1_ok
= 0, crc2_ok
= 0;
142 env_t
*ep
, *tmp_env1
, *tmp_env2
;
144 tmp_env1
= (env_t
*)env1_buf
;
145 tmp_env2
= (env_t
*)env2_buf
;
147 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
148 printf("\n** Cannot find mtd partition \"%s\"\n",
149 CONFIG_ENV_UBI_PART
);
150 set_default_env(NULL
);
154 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME
, (void *)tmp_env1
,
156 printf("\n** Unable to read env from %s:%s **\n",
157 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME
);
160 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND
, (void *)tmp_env2
,
162 printf("\n** Unable to read redundant env from %s:%s **\n",
163 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME_REDUND
);
166 crc1_ok
= crc32(0, tmp_env1
->data
, ENV_SIZE
) == tmp_env1
->crc
;
167 crc2_ok
= crc32(0, tmp_env2
->data
, ENV_SIZE
) == tmp_env2
->crc
;
169 if (!crc1_ok
&& !crc2_ok
) {
170 set_default_env("!bad CRC");
172 } else if (crc1_ok
&& !crc2_ok
) {
174 } else if (!crc1_ok
&& crc2_ok
) {
177 /* both ok - check serial */
178 if (tmp_env1
->flags
== 255 && tmp_env2
->flags
== 0)
180 else if (tmp_env2
->flags
== 255 && tmp_env1
->flags
== 0)
182 else if (tmp_env1
->flags
> tmp_env2
->flags
)
184 else if (tmp_env2
->flags
> tmp_env1
->flags
)
186 else /* flags are equal - almost impossible */
190 if (gd
->env_valid
== 1)
195 env_flags
= ep
->flags
;
196 env_import((char *)ep
, 0);
198 #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
199 void env_relocate_spec(void)
201 ALLOC_CACHE_ALIGN_BUFFER(char, buf
, CONFIG_ENV_SIZE
);
203 if (ubi_part(CONFIG_ENV_UBI_PART
, NULL
)) {
204 printf("\n** Cannot find mtd partition \"%s\"\n",
205 CONFIG_ENV_UBI_PART
);
206 set_default_env(NULL
);
210 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME
, (void *)&buf
,
212 printf("\n** Unable to read env from %s:%s **\n",
213 CONFIG_ENV_UBI_PART
, CONFIG_ENV_UBI_VOLUME
);
214 set_default_env(NULL
);
220 #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */