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Table 66. Integrated Devices details (continued)
Option
I/O Snoop HoldOff Response
Current State of Embedded Video
Controller
SR-IOV Global Enable
Internal SD Card Port
Internal SD Card Redundancy
Internal SD Primary Card
OS Watchdog Timer
Empty Slot Unhide
Slot Disablement
Slot Bifurcation
Description
the primary video. You might have to rearrange the cards in the slots in
order to control which card is the primary video.
Selects the number of cycles PCI I/O can withhold snoop requests, from the
CPU, to allow time to complete its own write to LLC. This setting can help
improve performance on workloads where throughput and latency are critical.
The options available are 256 Cycles, 512 Cycles, 1K Cycles, 2K Cycles,
4K Cycles, 8K Cycles, 16K Cycles, 32K Cycles, 64K Cycles and 128K
Cycles.This option is set to 2K Cycles by default.
Displays the current state of the embedded video controller. The Current
State of Embedded Video Controller option is a read-only field. If the
Embedded Video Controller is the only display capability in the system (that
is, no add-in graphics card is installed), then the Embedded Video Controller
is automatically used as the primary display even if the Embedded Video
Controller setting is set to Disabled.
Enables or disables the BIOS configuration of Single Root I/O Virtualization
(SR-IOV) devices. This option is set to Disabled by default.
Enables or disables the Internal SD Card Port of the Internal Dual SD Module
(IDSDM). This option is set to On by default.
Configures the redundancy mode of the Internal Dual SD Module (IDSDM).
When set to Mirror Mode, data is written on both SD cards. After failure of
either card and replacement of the failed card, the data of the active card is
copied to the offline card during the system boot. When Internal SD Card
Redundancy is set to Disabled, only the primary SD card is visible to the
operating system. This option is set to Disabled by default.
By default, the primary SD card is selected to be SD Card 1. If SD Card 1 is not
present, then the controller selects SD Card 2 to be the primary SD card.
If your system stops responding, this watchdog timer aids in the recovery
of your operating system. When this option is set to Enabled, the operating
system initializes the timer. When this option is set to Disabled (the default),
the timer does not have any effect on the system.
Enables or disables the root ports of all the empty slots that are accessible to
the BIOS and operating system. This option is set to Disabled by default.
Enables or disables or boot driver disables the available PCIe slots on your
system. The slot disablement feature controls the configuration of the PCIe
cards installed in the specified slot. Slots must be disabled only when the
installed peripheral card prevents booting into the operating system or causes
delays in system startup. If the slot is disabled, both the Option ROM and UEFI
drivers are disabled. Only slots that are present on the system will be available
for control. When this option is set to boot driver disabled, both the Option
ROM and UEFI driver from the slot will not run during POST. The system will
not boot from the card and its pre-boot services will not be available. However,
the card is available to the operating system.
Slot n: Enables or disables or only the boot driver is disabled for the PCIe slot
n. This option is set to Enabled by default.
Auto Discovery Bifurcation Settings allows Platform Default Bifurcation,
Auto Discovery of Bifurcation, and Manual bifurcation Control.
This option is set to Platform Default Bifurcation by default. The slot
bifurcation field is accessible when set to Manual bifurcation Control and
is grayed out when set to Platform Default Bifurcation and Auto Discovery
of Bifurcation.
NOTE:
The slot bifurcation supports on PCIe slot only, does not support
slot type from Paddle card to Riser and Slimline connector to Riser.
Pre-operating system management applications
61
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