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author | Mario Schuknecht <mario.schuknecht@dresearch-fe.de> | 2015-03-24 08:59:00 +0100 |
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committer | Tom Rini <trini@konsulko.com> | 2015-04-07 08:41:10 -0400 |
commit | 5e8397dd94a1b55cd7577cdc24f271b71f660e7e (patch) | |
tree | 8d78cd49d1bfcbd500929276f063361d7cf024f8 /drivers/block | |
parent | 3419af770ddb6d3d777f651f9eb89479df4623ba (diff) |
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>
Diffstat (limited to 'drivers/block')
0 files changed, 0 insertions, 0 deletions