[tboot-devel] GETSEC[SENTER] fail on HP dc7800

[Hal F. <hal...@gm...>]

I haven't run tboot in a while, but I'm trying it on my HP dc7800 and
finding it hangs in GETSEC[SENTER]. This is even true with old
versions of tboot that used to work. My system has no USB ports
plugged in, and no hardware changes.

The one change is I recently updated my BIOS. I suspect this has to be
the cause. One nice thing about the new BIOS is that the tboot hang
actually reboots the machine with the ERRORCODE register intact. Its
value is c00020a1. This is progress code 0ah, error code 1000,
meaning: "device scope of VT-d DMAR ACPI table is invalid". Not clear
what this means.

My log is attached, including the hang and the relaunch of tboot. This
is version 20090330 of tboot. Thanks very much -

Hal Finney