Reference Guide

Table 20. TPM 1.2 security information (continued)
Option Description
Enables you to control the reporting mode of the TPM. The TPM Security option is set to Off by
default. You can only modify the TPM Status, and TPM Activation if the TPM Status field is set to
either On with Pre-boot Measurements or On without Pre-boot Measurements.
When TPM 1.2 is installed, the TPM Security option is set to Off, On with Pre-boot Measurements,
or On without Pre-boot Measurements.
When TPM 2.0 is installed, the TPM Security option is set to On or Off. This option is set to Off by
default.
TPM Information Changes the operational state of the TPM. This option is set to No Change by default.
TPM Firmware Indicates the firmware version of the TPM.
TPM Status Specifies the TPM status.
TPM Command Controls the Trusted Platform Module (TPM). When set to None, no command is sent to the TPM.
When set to Activate, the TPM is enabled and activated. When set to Deactivate, the TPM is disabled
and deactivated. When set to Clear, all the contents of the TPM are cleared. This option is set to None
by default.
Table 21. TPM 2.0 security information
Option Description
TPM Information Changes the operational state of the TPM. This option is set to No Change by default.
TPM Firmware Indicates the firmware version of the TPM.
TPM Hierarcy Enables, disables, or clears the storage and endorsement hierarchies. When set to Enabled, the storage
and endorsement hierarchies can be used.
When set to Disabled, the storage and endorsement hierarchies cannot be used.
When set to Clear, the storage and endorsement hierarchies are cleared of any values, and then reset
to Enabled.
TPM Advanced
Settings
Specifies TPM Advanced Settings details.
Table 22. System Security details
Option Description
Power Button Enables or disables the power button on the front of the system. This option is set to
Enabled by default.
AC Power Recovery Sets how the system behaves after AC power is restored to the system. This option is
set to Last by default.
AC Power Recovery Delay Sets the time delay for the system to power up after AC power is restored to the
system. This option is set to Immediate by default.
User Defined Delay (60 s to 600
s)
Sets the User Defined Delay option when the User Defined option for AC Power
Recovery Delay is selected.
UEFI Variable Access Provides varying degrees of securing UEFI variables. When set to Standard (the
default), UEFI variables are accessible in the operating system per the UEFI
specification. When set to Controlled, selected UEFI variables are protected in the
environment and new UEFI boot entries are forced to be at the end of the current boot
order.
Secure Boot Enables Secure Boot, where the BIOS authenticates each pre-boot image by using the
certificates in the Secure Boot Policy. Secure Boot is set to Disabled by default.
Secure Boot Policy When Secure Boot policy is set to Standard, the BIOS uses the system manufacturer’s
key and certificates to authenticate pre-boot images. When Secure Boot policy is set to
16 Pre-operating system management applications