Dear Thierry,
In message 1426851034-29393-1-git-send-email-thierry.reding@gmail.com you wrote:
This is mostly useful for debugging the early boot process. Often boards can provide some low-level code that outputs a character on some debug port prior to passing the early setup code. Allow boards to implement an early_putc() function that will be used to redirect printf() and friends to this debug port until the proper console becomes ready.
Hm... it is one of the basic design principles of U-Boot to provide debug output on the console as soon as possible. It should be the primary purpose of low level initialization to enable console output, before anything else.
Now you say, you have output even before that - this aears to be a contradiction to me. If you can output characters, then use this as your console. I feel we should not need any special configuration options to do what we should do anyway.
Or am I missing somthing?
Best regards,
Wolfgang Denk