When do we need to manually change PRELOADER generated files?



The general scheme of building preloader is composed of:

handoff ->; preloader config + u-boot-spl source code ->; binary

So it is usually " automatic " build without any customization.

Yet, it seems that sometimes there might be a need to manually modify the code before building the binary:

I try to understand when do we manually change code.

I read somewhere that enabling the bridge is done from preloader:


Does it mean that some file should be modified in order to enable the bridge or is it part of the code generator ?

When do we need to manually modify the generated code ?

Thank you,