Thanks for your reply, there is another problem: EVB can be started from SDcard, and oal_driver. ko needs to be loaded when running example. Execute modprobe oal_driver.ko according to the instructions of User Manual, and an error is reported:
Modprobe :FATAL:Module oal_driver.ko not found in driectory /lib/modeles/5.10.109-rt65+ g0Bace7fde5f5, run depmod Oal_driver. ko and another error is reported:
DEPMOD: ERROR: Bad version passed oal_driver.ko.
How do I resolve the problem?