The message:
  Using pcb_onfault=0xf007ac34 addr=effbeff4 st=003c9007 p=0xf3491000

comes from the file /usr/src/sys/arch/arm32/arm32/fault.c, in the routine
data_abort_handler(). This means that the system got a data abort fault.
This is most probably a wrong setting in your bootloader: you have set the
access permissions is some memory area too high, and thus NetBSD can not
access some memory that it needs to. Ask the person who wrote the bootloader
to check through the access permissions in the MMU carefully -- to verify if
this is the problem, first get him to set all access permissions to "11"
Read/Write access to all (See page 7-23 of the ARM Architectural Reference
Manual)

Cheers
 Bruce