What happens before Startup Code is executed?

[Kolibri]

Hello i´m working with the FRDM-K32L3A6 Freedom Development Board.

What Code is running before the startup code (startup_k32l3a60_cm4.c)? And where are the LVD Registers getting configured?

I ask this because somewhere the LVD is configured before the startup code and i cannot find where this is done.

Thanks and best regards