Re: [tboot-devel] Sinit error codes

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

> From: Lil Evil [mailto:Lil...@gm...]
> Sent: Wednesday, January 28, 2009 3:41 AM
>
> Hi there,
>
> I ve been fiddling around with TXT lately and been receiving SINIT errorcodes, which are not
> listed in the sinit_error.txt
> For instance 0x80000005 and 0x80000006 which are marked for future use.
> Any chance to get a description for those errorcodes or an updated errorcode list?

These error codes are processor-generated.  Tables 14 and 15 (in Appendix B) describe the overall format of the ERRORCODE register, where if bit 30 is clear then it is a processor-generated error.

Error 0x80000005 is #BadACMMType, which indicates that the MTRRs are not programmed correctly.  If you are seeing this with the latest tboot code, then it may be an issue with BIOS--we have seen at least one BIOS whose SMI handler mis-set one of the MTRRs that was being used by SMM.  If this seems to be the condition, you can see if your BIOS provides a configuration option to disable the BIOS's/SMM's use of the MTRR; otherwise contact your system vendor.

Error 0x80000006 is #UnsupportedACM, which indicates some type of corruption of the SINIT ACM in memory.  I have not seen this before on any of my systems, so you should check that no code has accidentally trampled over it.

Joe