diff options
| author | Jerry Snitselaar <jsnitsel@redhat.com> | 2019-10-30 15:58:43 -0700 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2020-01-22 10:46:51 +0200 |
| commit | 7084eddf6be94e73f8298c1a28078b91536f2975 (patch) | |
| tree | 3ea3270b56387af2fdcb63dc4bafe0ca06f3731c /Documentation | |
| parent | c269e876c5affd4d240d5fc85b29e9c9942d8465 (diff) | |
tpm: Add tpm_version_major sysfs file
Easily determining what TCG version a tpm device implements
has been a pain point for userspace for a long time, so
add a sysfs file to report the TCG major version of a tpm device.
Also add an entry to Documentation/ABI/stable/sysfs-class-tpm
describing the new file.
Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: Mimi Zohar <zohar@linux.ibm.com>
Cc: Peter Huewe <peterhuewe@gmx.de>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: linux-integrity@vger.kernel.org
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/stable/sysfs-class-tpm | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-class-tpm b/Documentation/ABI/stable/sysfs-class-tpm index 2881626fefa3..58e94e7d55be 100644 --- a/Documentation/ABI/stable/sysfs-class-tpm +++ b/Documentation/ABI/stable/sysfs-class-tpm @@ -183,3 +183,14 @@ Description: The "timeouts" property shows the 4 vendor-specific values The four timeout values are shown in usecs, with a trailing "[original]" or "[adjusted]" depending on whether the values were scaled by the driver to be reported in usec from msecs. + +What: /sys/class/tpm/tpmX/tpm_version_major +Date: October 2019 +KernelVersion: 5.5 +Contact: linux-integrity@vger.kernel.org +Description: The "tpm_version_major" property shows the TCG spec major version + implemented by the TPM device. + + Example output: + + 2 |