[coreboot-gerrit] Change in coreboot[master]: drivers/pc80/tpm: Enable TPM device unconditionally in ASL
Tobias Diedrich (Code Review)
gerrit at coreboot.org
Tue May 2 10:36:37 CEST 2017
Tobias Diedrich has posted comments on this change. ( https://review.coreboot.org/19235 )
Change subject: drivers/pc80/tpm: Enable TPM device unconditionally in ASL
......................................................................
Patch Set 6:
> > Does the tpm work?
> > Did you run a selftest?
> > Can you get owernership?
>
> Could you please list the commands on how to test that? Right now,
> judging from the Linux messages everything works on the Lenovo
> X60t, besides sometimes resume, where the start-up is not done by
> the coreboot.
tpm_selftest is part of the tpm-tools package.
Also this _might_ be helpful info:
"""
Initializing a TPM without the BIOS (for systems where the BIOS does not have TPM support).
I couldn't find any docs for this, so it required quite a bit of trial-and-error.
1) Install tpm-tools (and trousers)
2) Boot into single-user mode (trousers only allows you to software-assert physical presence in single-user mode)
3) tpm_setpresence --assert --well-known
4) tpm_setenable --enable --force
5) tpm_setactive --enable --well-known
6) reboot!
7) Your TPM should now be enabled and active.
"""
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