[coreboot] [RFC] IMC detection to superiotool

[Rudolf Marek]

Hi all,

If setpci -s 14.3 40.b gives back bit7 set, then following patch might detect 
the IMC SIO interface. IMC is the embedded 8051 CPU inside SB750/SB820 (or later).

I have also a patch how to embed the firmware to the coreboot image and make it 
active. It might be used for Advanced clock calibration or IRDA interface.

Not sure if AMD will/want release some documentation of the programming 
interface (for the 8051). I did some advances and partially figured out the 
register map of the 8051 part of the interface.

I have also a sample program to communicate with EC firmware through mailbox.

Please let me know if this patch works for you.

Thanks
Rudolf