| SYSTEMD-TPM2-CLEAR.SERVICE(8) | systemd-tpm2-clear.service | SYSTEMD-TPM2-CLEAR.SERVICE(8) |
.SH "NAME" systemd-tpm2-clear.service - Request that the TPM
security chip is cleared on next boot
.SH "SYNOPSIS"
.PP systemd-tpm2-clear.service
.PP /usr/lib/systemd/systemd-tpm2-clear
.SH "DESCRIPTION"
.PP systemd-tpm2-clear.service is a service that requests that the TPM is
reset by the PC firmware on the next boot. It makes use of the TPM Physical
Presence Interface (PPI). Note that this service does not immediately
execute the clear operation, but simply asks the PC firmware to execute it
at next boot, where the user will be asked for confirmation before the
operation is done.
.PP systemd-tpm2-clear.service is typically hooked into the
factory-reset.target unit in order to request the TPM request before an
immediate reboot. See Factory Reset[1] for more information.
.SH "OPTIONS"
.PP The following options are understood:
.PP --graceful
Exit cleanly and execute no operation if the system does not possess a TPM
chip.
Added in version 258.
.RE
.PP -h, --help
Print a short help text and exit.
.RE
.PP --version
Print a short version string and exit.
.RE
.SH "KERNEL COMMAND LINE"
.PP systemd-tpm2-clear understands the following kernel command line
parameters:
.PP systemd.tpm2_allow_clear=
Takes a boolean argument. If false the service will succeed, but instead of
requesting the TPM clear operation from the PC firmware it will not execute
any operation. If not specified defaults to true.
Added in version 258.
.RE
.SH "SEE ALSO"
.PP systemd(1), systemd-tpm2-setup.service(8),
systemd-factory-reset-request.service(8)
NOTES
- 1.
- Factory Reset
| systemd 262.2 |