Table 27. Integrated Devices details (continued)
Option
Description
Embedded Video Controller
Enables or disables the use of Embedded Video Controller as the primary display.
When set to
Enabled
, the Embedded Video Controller will be the primary display
even if add-in graphic cards are installed. When set to
Disabled
, an add-in graphics
card will be used as the primary display. BIOS will output displays to both the primary
add-in video and the embedded video during POST and pre-boot environment. The
embedded video will then be disabled right before the operating system boots. This
option is set to
Enabled
by default.
NOTE:
When there are multiple add-in graphic cards installed in the
system, the first card discovered during PCI enumeration is selected as
the primary video. You might have to re-arrange the cards in the slots in
order to control which card is the primary video.
Current State of Embedded Video
Controller
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
.
PCIe Preferred IO Bus
When set to
Enabled
, you can provide the Bus address (in decimal) to choose end
device for preferred IO Bus. This option is set to
Disabled
by default.
Enhanced Preferred IO
When set to
Enabled
, the LCLK speed for the root complex where Preferred IO is
enabled will automatically be set to 600 MHz (effective 593 MHz).
SR-IOV Global Enable
Enables or disables the BIOS configuration of Single Root I/O Virtualization (SR-IOV)
devices. This option is set to
Disabled
by default.
Internal SD Card Port
Enables or disables the internal SD card port of the Internal Dual SD Module
(IDSDM). This option is set to
On
by default.
Internal SD Card Redundancy
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 OS. This option is set to
Mirror
by default.
Internal SD Primary Card
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. This option
is set to
SD Card 1
by default.
OS Watchdog Timer
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.
Memory Mapped I/O Limit
Controls where MMIO is mapped. The
1 TB
option is designed for specific OS which
cannot support MMIO over 1 TB. This option is set to
8 TB
by default. The default
option is the maximum address that the system supports and recommended in most
cases.
Slot Disablement
Enables or 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.
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.
Slot Bifurcation
Slot Discovery Bifurcation Settings
allows
Platform Default Bifurcation
and
Manual bifurcation Control
.
34
Pre-operating system management applications
