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authorMario Schuknecht <mario.schuknecht@dresearch-fe.de>2015-03-24 08:59:00 +0100
committerTom Rini <trini@konsulko.com>2015-04-07 08:41:10 -0400
commit5e8397dd94a1b55cd7577cdc24f271b71f660e7e (patch)
tree8d78cd49d1bfcbd500929276f063361d7cf024f8
parent3419af770ddb6d3d777f651f9eb89479df4623ba (diff)
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env_sf: Fix recovery default
The u-boot environment is redundantly stored in a NOR flash on our boards. Redundant means that there are two places to store the environment. But only one of the two is active. I discovered that on one board the u-boot (env_sf) uses the environment from the second place and the Kernel (fw_printenv) uses the environment from the first place. To decide which is the active environment there is a byte inside the environment. 1 means active and 0 means obsolete. But on that board both environments had have a 1. This can happen if a power loss or reset occurs during writing the environment. In this situation the u-boot (env_sf) implementation uses the second environment as default. But the Kernel (fw_printenv) implementation uses the first environment as default. This commit corrects the default in the u-boot env_sf implementation when a problem was detected. Now the recovery default is the same like in all other environment implementations. E.g. fw_printenv and env_flash. This ensures that u-boot and Kernel use the same environment. Signed-off-by: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>
-rw-r--r--common/env_sf.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/common/env_sf.c b/common/env_sf.c
index 5e3729c..e928f57 100644
--- a/common/env_sf.c
+++ b/common/env_sf.c
@@ -188,15 +188,17 @@ void env_relocate_spec(void)
tmp_env2->flags == ACTIVE_FLAG) {
gd->env_valid = 2;
} else if (tmp_env1->flags == tmp_env2->flags) {
- gd->env_valid = 2;
+ gd->env_valid = 1;
} else if (tmp_env1->flags == 0xFF) {
+ gd->env_valid = 1;
+ } else if (tmp_env2->flags == 0xFF) {
gd->env_valid = 2;
} else {
/*
* this differs from code in env_flash.c, but I think a sane
* default path is desirable.
*/
- gd->env_valid = 2;
+ gd->env_valid = 1;
}
if (gd->env_valid == 1)