HSM Authentication

Select

Setup Hardware Security Module

and configure the following settings to authenticate the firewall to the HSM.

HSM Module Authentication
Server Name	Select an HSM server name from the drop-down, then select if you want to authenticate and establish trust using automatic or manually generated certificates. Automatic Manual If you select Manual , you need to import and install the HSM server manually generated certificate. Export the HSM client certificate to install on the HSM server.
Administrator Password	Enter the administrator password of the HSM to authenticate the firewall to the HSM.

Document:PAN-OS Web Interface Help