How to: Enable and Activate TPM via BIOS or PPI
TPM Enable and/or Activate is an operation mostly used on TPM 1.2. Bellow you can see how to do it via BIOS or PPI.
Note that executing the operation via PPI is the recommended method due its concise steps and not requiring console access to the unit for new BIOS. Gracefully used to avoid visits to the server racks, avoid console cables and back-and-forth communication with IT teams on field.
Note: This article mostly applies to TPM 1.2, available only on NSC models produced prior to 2020.
Enable and Activate TPM via PPI (Physical Presence Interface)
- Login as root in NG Shell;
- Verify TPM clear+enable+activate operation (14) on PPI operations list is 'User not required';
- cat /sys/class/tpm/tpm0/ppi/tcg_operations
- See option 14 is 'User not required';
- Request the operation to TPM PPI;
- echo 14 > /sys/class/tpm/tpm0/ppi/request
- Reboot the device;
- Wait unit reboot and boot up. Now the TPM is cleared, enabled and activated;
Note: This option might not require console access to the unit to execute the operation;
Note: Even on older BIOS, the operation is usually 'User not required', but if it is 'User required' on your unit, it will require confirming operation on the unit console when the unit reboots, what requires console access to the unit.
Enable and Activate TPM on BIOS
- Restart the Nodegrid
- Press "shift + D"
to enter in Advanced BIOS
- Go to Advanced tab
- Select Trusted
- See the fields from
Configuration and Current Status
- If TPM Enabled Status
is Disabled, change TPM State to Enabled
- If Security Device Support is Disabled, change to Enabled
- Presses ‘F4' to save your
changes and exit
Here're screenshots to help in the visualization of the process:
Enable TPM on BIOS
We hope this guide was helpful in enabling and/or activating the TPM of your Nodegrid device. If you have any questions or encounter any issues during the process, please refer to our knowledge base for more information. If you still need assistance, don't hesitate to contact our support team and we'll be happy to help you.
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