Loading splash ok -> <reset>, how to debug?

Hi,

is there any good way to debug early kernel kabooms (or maybe efi loader
handover) without JTAG in place?

I have a SoC using U-Boot and often after a cold start it goes like
this:

------------------------------------------------------------------------
Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel]...
Using DTB provided by EFI at 0x3e6c3000.
Loading splash ok
<reset>
------------------------------------------------------------------------

Once it's been looping for a few iterations eventually it starts
booting.

Given there is zero output of the error, is there aything one could try
to do to debug this (remotely)?

I can netboot it and change laoder/kernel.

/bz

-- 
Bjoern A. Zeeb                                                     r15:7