In message 6.1.1.1.0.20050914163541.01ec0b00@ptg1.spd.analog.com you wrote:

We were looking at adding POST support to our platform, and was digging into POST/ether.c (which seems to be specific for Serial Communication Controllers (SCC).

Indeed. The current code is mostly 8xx (and a little 82xx).

I was wondering if it would be better to add the loopback control into the specific ethernet driver? in ./drivers?

Maybe. But this is only part of the issues. Additionally, post/ should be cleaned up, and changed to deal with different processors.

Or what way would you prefer to add testing of other architectures ethernet / uart / usb peripherals?

Please see previous discussion on the mailing list.

Best regards,

Wolfgang Denk