Re: [tboot-devel] recommended system?

[Cihula, J. <jos...@in...>]

On Friday, April 04, 2008 8:16 AM, Jason Kynes wrote:
> I've seen several reports on systems that don't seem to work with
> tboot (e.g. Dell Optiplex 755) and only one report of success (HP
> dc7800) that wasn't repeatable onto an almost identical machine. Is
> there a commercially available system that's known to work
> consistently with tboot or is it basically limited to SDPs at this
> point?
> 
> Thanks,
> Jason

Jason,

I have verified that the current tboot code (the tip of the mercurial
tree) launches correctly on an HP dc7800 (I don't remember the BIOS
version).  I do not know if launch failures will cause a hang on reboot
with their latest BIOS or not.  HP is aware of the issue with hanging on
reboots and is working on a fix if they do not already have it
available.  The issue, though, is only seen when the launch fails.

I have been told that the Dell Optiplex 755 with the most recent BIOS
also performs a TXT launch correctly and that it does not have an issue
with hanging on failures.

The Intel DQ35JO motherboard, with the latest BIOS (v757), still has a
few TXT issues.  The fixes are currently under test.

The tip of the current tboot code has several fixes related to TPM
timeouts and proper state handling.  These (now fixed) TPM issues were
responsible for some of the reported failures.

Joe