Dell EMC PowerEdge R7515 Reference Manual page 14

Table 17. Integrated Devices details (continued)
Option
Current State of Embedded Video
Controller
Root Complex 0x00 LCLK Frequency
Root Complex 0x40 LCLK Frequency
Root Complex 0x80 LCLK Frequency
Root Complex 0xC0 LCLK Frequency
PCIe Preferred IO Bus
Enhanced Preferred IO
SR-IOV Global Enable
Internal SD Card Port
Internal SD Card Redundancy
Internal SD Primary Card
OS Watchdog Timer
Memory Mapped I/O Limit
Slot Disablement
14 Pre-operating system management applications
Description
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.
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.
Sets the LCLK frequency for Bus address 0x00.
Sets the LCLK frequency for Bus address 0x40.
Sets the LCLK frequency for Bus address 0x80.
Sets the LCLK frequency for Bus address 0xC0.
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.
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).
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 OS. This option is set to Mirror 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. This
option is set to SD Card 1 by default.
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.
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.
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.