[U-Boot] U-boot SPL direct Linux boot

[Heiko Schocher]

Hello Simon,

Simon Schwarz wrote:
> for my bachelor thesis I will implement a direct Linux boot from U-Boot SPL.
> My current plan is to utilize do_bootm_[OS].
> 
> Simplest solution is to direct boot Linux/other OS and just boot
> u-boot when a key is pressed. In addition i will also have some tests
> (header check/CRC) - if they fail start u-boot.
> 
> IMHO this may also be of interest for the new SPL architecture.
> 
> Are there already implementations I am not aware of? Any comments on
> what I should also add? Problems I may not see?

I tried this on an davinci dm368 based board (not in mainline yet,
but patches for the board support coming soon), with the following
patch: