Arm-linux + TrustZone

Hi,

  	I'm involved in a research project in University for secure 
document exchnage between companies and we are hoping to implement this 
architecture on mobile devices that use Trusted Computing.

The TrustZone architecture caught our eye and I have a few questions 
about it.

Q.1: It looks like the trustzone API has been incorporated into 
Arm-Linux. From which version of Arm-linux is this included in? Does 
this mean that device drivers are available for any ARM processor that 
uses TrustZone. I know that to compile for the "trusted" part one needs 
to use the RealView Development Suite (RVDS) of ARM.

Q.2: Does anybody have any experience of flashing a new Kernel onto a 
device such as the N-900 (which has the Cortex A-8 processor that has 
TrustZone).

Thank you very much for your help.

Anandha