U-Boot
You can get the latest U-Boot support from either the board vendor, or the community.
The current U-Boot versions supported in meta-lmp
(u-boot-fio
)
can be found in the repo.
It is possible that there is no U-Boot support for the target board, or there is only support for an old U-Boot version.
In this case, you should update/port to a newer U-Boot version, as supported in u-boot-fio
.