In message 8bf24776050830223673cd6b8e@mail.gmail.com you wrote:
How does a boot loader know which device is connected. say i have connected>
U-Boot is stupid. It doesn't "know" anything. It just does what you tell it.
the smc 91111 ethernet controller - how does it know it is smc91111 controller.
It doesn't know. It juist runs the code you configure into it.
I think as soon as it detects the smc91111 controller is connected. it must>
It doesn;t detect it. It just runs the init code if you configure it.
What will happen if there are 2 ethernet controllers in the board. how u-boot responds to this.
If just does what you configure...
Does anybody know what constitues configuring a ethernet controller and wha> t the code does ?.
I'd say such a question is off topic here. You are supposed to have a deep understanding of the hardware and driver code when digging into boot loader code.
i would request you to kindly let me the flow in u-boot. from startup to configuring ind. devices.
Just start at the reset entry point and follow the code. Ther eis no easy way to understand it all.
Any description is available in this matter will be very useful.
Read the README and the manual.
Best regards,
Wolfgang Denk