[U-Boot-Users] u-boot environment variable setting: "console=ttyCPM0"

[Alex]

Hi,

I was recommended to use u-boot environment variable setting: "console=ttyCPM0" 
for loading linux-2.6.8-rc2 uImage (by u-boot) on to PQ2 ADS (with MPC 8270 on 
it). Could anyone knowledgeable ellaborate on usage of it for above described 
configuration ?
What version of u-boot supports this setting ? 
What baud rate value I should add to this setting, if I want to use 
Hyperterminal serial connection ( over USB) to the board ?

TIA,
Alex