Chapter 6: BIOS
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SuperServer 1019S-MC0T User's Manual
C-State Auto Demotion
Use this feature to prevent unnecessary excursions into the C-states to improve latency. The
options are Disabled, C1, C3, and
C1 and C3
.
C-State Un-Demotion
This feature allows the user to enable or disable the un-demotion of C-State. The options are
Disabled, C1, C3, and
C1 and C3
Package C-State Demotion
Use this feature to enable or disable the Package C-State demotion. The options are
Disabled
and Enabled.
Package C-State Un-Demotion
Use this feature to enable or disable the Package C-State un-demotion. The options are
Disabled
and Enabled.
C-State Pre-Wake
This feature allows the user to enable or disable the C-State Pre-Wake. The options are
Disabled and
Enabled
.
Package C-State Limit
Use this feature to set the Package C-State limit. The options are C0/C1, C2, C3, C6, C7,
C7s, C8, and
Auto
.
CPU Thermal Configuration
CPU DTS
Select Enabled for the ACPI thermal management to use the DTS SMM mechanism to
obtain CPU temperature values. Select Disabled for EC to report the CPU temperature
values. The options are
Disabled
and Enabled.
ACPI 3.0 T-States
Select Enabled to support CPU throttling by the operating system to reduce power
consumption. 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 System Agent information will display:
•
System Agent Bridge Name
•
SA PCIe Code Version
•
VT-d
VT-d
Select Enabled to enable 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
Enabled
and Disabled.
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). This feature appears if SW Guard
Extensions is set to Enabled. The options are
Auto
, 32MB, 64MB, and 128MB.
Graphics Configuration
Primary Display
Use this feature to select the graphics device to be used as the primary display. The options
are
PEG
and PCIE.
