Chapter 4: BIOS
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Disable Turbo GT frequency
Use this feature to disable Turbo GT frequency. If set to Enabled, Turbo GT frequency
becomes disabled. If set to Disabled, GT frequency limiters will be removed. The options
are Enabled and
Disabled
.
VT-d
Select Enabled to activate Intel Virtualization Technology support for Direct I/O VT-d
by
reporting the I/O device assignments to VMM through the DMAR ACPI Tables. This feature
offers fully-protected I/O resource-sharing across the Intel platforms, providing the user with
greater reliability, security and availability in networking and data-sharing. The options are
Disabled and
Enabled
.
SW Guard Extensions (SGX)
Select Enabled to activate the Software Guard Extensions (SGX). The options are Disabled,
Enabled, and
Software Controlled
.
GNA Device (B0:D8:F0)
Use this feature to enable SA GNA device. The options are
Enabled
and Disabled.
*If the feature SGX is set to Enabled, the following features below will be available
for configuration:
Select Owner EPOCH Input Type
There are three Owner EPOCH modes (each EPOCH is 64 bit). The options are
No Change
in Owner EPOCHs
, Change to New Random Owner EPOCH, and Manual User Defined
Owner EPOCHs.
*If the feature Select Owner EPOCH Input Type is set to Manual User Defined Owner
EPOCHs, the following features below will be available for configuration:
Software Guard Extensions Epoch 0
Enter a numeric value for this feature. The default is
0
.
Software Guard Extensions Epoch 1
Enter a numeric value for this feature. The default is
0
.
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 32MB, 64MB,
and
128MB
.
