Chapter 4: BIOS
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ACPI 3.0 T-States
Select Enabled to support CPU throttling by the operating system to reduce power
consumption. The options are Enabled and
Disabled
.
Intel TXT (LT) Support
Intel TXT (Trusted Execution Technology) helps protect against software-based attacks and
ensures protection, confidentiality and integrity of data stored or created on the system. Use
this feature to enable or disable TXT Support. The options are
Disabled
and Enabled.
SW Guard Extensions (SGX)
Use this feature to enable or disable the Intel Software Guard Extensions (SGX). SGX is a
set of CPU instructions that increases software security. The options are Disabled,
Enabled
,
and Software Controlled.
Select Owner EPOCH input type
Use this feature to select an Intel Software Guard Extensions (SGX) EPOCH mode. Each
mode has different values, which can be entered manually. The options are
No Change
in Owner EPOCHs
, Change to New Random Owner EPOCHs, and Manual User Defined
Owner EPOCHs.
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
Auto
, 32MB, 64MB,
and 128MB.
