Hi,
I have a very very elementary question regarding the drivers as implemented in uboot. This is regarding the uboot port that I am doing on my arm proprietary board. I take "at91rm9200" as my reference. I see that for serial drivers certain functions are exposed for eg. "serial_puts" or may be for timers "interrupt_init" or "reset_timer" etc. I see that all these functions are global.
i) How does the bootloader core logic call these functions, are they registered somewhere? Which is that middle layer, that calls these functions?
ii) Now I have to implement these functions for my board, so what do these functions expect? Are these expectations listed anywhere or reading codes of similar boards is the only alternative? I have gone through the whole Readme but could not find it.
iii) How do I know which all functions to implement?
Thanks a lot, Ajay