SYSTEMD-TPM2-GENERATOR(8) systemd-tpm2-generator SYSTEMD-TPM2-GENERATOR(8)

.SH "NAME" systemd-tpm2-generator - Generator for inserting TPM2 synchronization point in the boot process

.SH "SYNOPSIS"

.PP /usr/lib/systemd/system-generators/systemd-tpm2-generator

.SH "DESCRIPTION"

.PP **systemd-tpm2-generator** is a generator that adds a *Wants=* dependency from sysinit.target to tpm2.target when it detects that the firmware discovered a TPM2 device but the OS kernel so far did not. tpm2.target is supposed to act as synchronization point for all services that require TPM2 device access. See [**systemd.special**(7)](/man/os/systemd/systemd.special.7) for details.

.PP The **systemd.tpm2\_wait=** kernel command line option may be used to override behaviour of the generator. It accepts a boolean value: if true then tpm2.target will be added as synchronization point even if the firmware has not detected a TPM2 device. If false, the target will not be inserted even if firmware reported a device but the OS kernel does not expose a device for it yet. The latter might be useful in environments where a suitable TPM2 driver for the available hardware is not available.

.PP The **systemd.tpm2\_software\_fallback=** kernel command line option (which takes a boolean argument, defaulting to false) may be used to enable an automatic software TPM fallback in case a hardware TPM is not detected and [**swtpm**(8)](/man/os/systemd/swtpm.8) is available. This pulls in the [**systemd-tpm2-swtpm.service**(8)](/man/os/systemd/systemd-tpm2-swtpm.service.8) service.

.PP **systemd-tpm2-generator** implements [**systemd.generator**(7)](/man/os/systemd/systemd.generator.7).

.SH "SEE ALSO"

.PP [**systemd**(1)](/man/os/systemd/systemd.1), [**systemd.special**(7)](/man/os/systemd/systemd.special.7), [**kernel-command-line**(7)](/man/os/systemd/kernel-command-line.7), [**systemd-tpm2-swtpm.service**(8)](/man/os/systemd/systemd-tpm2-swtpm.service.8)

systemd 262.2

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Document: systemd-tpm2-generator(8) from systemd 262.2-r1 (Chainguard OS)
Source: https://github.com/systemd/systemd