On 09/01/2016 10:55 AM, Jan Schermer wrote: > Do you have the correct TPM driver loaded in kernel? Does > /sys/class/misc/tpm0 exist? > AFAIK you can TXT-launch a kernel that has no driver (as it is likely loaded > in initramfs or later anyway), txt-stat will probably also work even without > a working in the kernel... >
On newer kernels (4.x+ IIRC) the location in sysfs changed: /sys/class/tpm/tpm0/device/pcrs > Jan > > >> On 01 Sep 2016, at 16:32, Brian E Luckau <bluc...@sgi.com> wrote: >> >> In the past using tboot 1.8.x and versions of trousers, tpm tools, etc, >> etc. that came with the distros, I was able to see the PCR values with: >> >> cat /sys/class/misc/tpm0/device/pcrs >> >> Currently I'm in CentOS 7.2 and have compliled and installed tboot 1.9.4. I >> see this, which with my limited knowledge base tells me something is goign >> right: >> >> >> [root@server0 ~]# txt-stat | grep measured >> TXT measured launch: TRUE >> TBOOT: measured launch succeeded >> >> [root@server0 ~]# txt-stat | grep senter >> senter_done: TRUE >> >> >> Any idea why I can't see the PCR values? >> >> ------------------------------------------------------------------------------ >> _______________________________________________ >> tboot-devel mailing list >> tboot-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/tboot-devel > > > ------------------------------------------------------------------------------ > _______________________________________________ > tboot-devel mailing list > tboot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/tboot-devel > -- Ross Philipson ------------------------------------------------------------------------------ _______________________________________________ tboot-devel mailing list tboot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tboot-devel
