Occasionally, you may need to reset your system. The reset command resets the entire system and is similar to performing a power cycle.
ok reset
If your system is set up to run the power-on self-test (POST) and initialization procedures on reset, these procedures begin executing when you initiate this command. (On some systems, POST is only executed after power-on.) Once POST completes, the system either boots automatically or enters the Forth Monitor, just as it would have after a power cycle.
If you were browsing the device tree, you may need to use the device-end command before you reset the system.