Description

For machines like the Equinix Metal c3.small.x86 the tcsd.service unit is reported as failing on the login prompt. This is due to the implementation only working with TPM 1.2 devices while the newer machines are using TPM 2.0.

Impact

It is not only confusing but also causes the kola test suite to report errors.

Environment and steps to reproduce

1. Set-up: Boot the mentioned machine tyype
2. Task: Check the status of the tcsd.service and the output of cat /sys/devices/platform/*/tpm/tpm0/tpm_version_major
3. Error: Because the major version is 2 the service fails to start with TCSD TDDL ioctl: (25) Inappropriate ioctl for device and exit code 30

Expected behavior
The service should not be started at all when TPM 2.0 is detetced.

Additional information
The service unit should be modified to check the content of /sys/devices/platform/*/tpm/tpm0/tpm_version_major and decide to skip execution.