Hi, I am going through the uboot drivers code for smc91111 ethernet controller in uboot.
My Objective is to know how boot loader configures the ethernet controller.
This is for the first time i am going thru a boot loader code.
I have some doubts:
How does a boot loader know which device is connected. say i have connected the smc 91111 ethernet controller - how does it know it is smc91111 controller.
I think as soon as it detects the smc91111 controller is connected. it must configure that - i think the code in drivers/smc91111.c must be executed.
What will happen if there are 2 ethernet controllers in the board. how u-boot responds to this.
However, i am not following the code given in smc91111.c i really dont know what it is doing ?.
i have the data sheets with me and going thru it. i must admit i am totally confused.
Does anybody know what constitues configuring a ethernet controller and what the code does ?.
i would request you to kindly let me the flow in u-boot. from startup to configuring ind. devices.
Any description is available in this matter will be very useful.
Any pointers in this matter is highly appreciated.
Thanks,
Regards, Ram