Chapter 4: BIOS
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ACPI T-States
Use this feature to enable or disable ACPI T-States. The options are Disabled and
Enabled
.
SGX settings
Software Guard Extensions (SGX)
Use this feature to enable or disable software guard extensions. The options are
Disabled
,
Enabled, and Software Controlled.
If the feature above is set to Software Controlled, the next three features are available
for configuration:
Select Owner EPOCH input type
Use this feature to select the EPOCH mode. The options are
No Change is Owner
EPOCHs
, Change to New Random Owner EPOCHs, and Manual User Defined Owner
EPOCHs.
SGX Launch Control Policy
Use this feature to select the Software Guard Extensions launch control policy. The options
are
Unlocked
, Intel Locked, and Locked.
PRMRR Size
The BIOS must reserve a contiguous region of Processor Reserved Memory (PRM) in the
Processor Reserved Memory Range Register (PRMRR). The options are 64MB, 128MB,
256MB, and
512MB
.
Enable/Disable SGX Debug Mode
Use this feature to enenable or disable Software Guard Extensions Debug Mode. The
options are
Disabled
and Enabled.
Chipset Configuration
Warning:
Setting the wrong values in the following features may cause the system to malfunc-
tion.
System Agent (SA) Configuration
The following information will display:
•
VT-d
Memory Configuration
Memory Configuration
