On 20-11-18, 09:35, Linus Walleij wrote:

The whole issue with splash screens and different hardware
turned over to Linux in running state is a bit imperfect I would
say, I think Viresh was working on boot constraints to get
handover of different systems components into some kind
of shape but maybe that stopped short because of the
complexities involved.

It got stuck mostly due to lack of use-cases where that can be useful.
All I could find until now is LCD and earlycon stuff.

Though things may change soon after the interconnect subsystem gets
merged, as we will have bootloader requirements for each and every
device in that case which the boot loader enables and passes on to
kernel.

-- 
viresh