Chapter 4: UEFI BIOS
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SR-IOV Support (Available if the system supports Single-Root Virtualization)
Select Enabled for Single-Root IO Virtualization support. The options are Enabled and
Disabled.
MMIO High Base
Use this feature to select the base memory size according to memory-address mapping for the
IO hub. The base memory size must be between 4032G to 4078G. The options are
56T
, 40T,
24T, 16T, 4T, 2T and 1T.
MMIO High Granularity Size
Use this feature to select the high memory size according to memory-address mapping for
the IO hub. The options are 1G, 4G, 16G, 64G,
256G
, and 1024G.
Maximum Read Request
Select Auto for the system BIOS to automatically set the maximum size for a read request
for a PCI-E device to enhance system performance. The options are
Auto
, 128 Bytes, 256
Bytes, 512 Bytes, 1024 Bytes, 2048 Bytes, and 4096 Bytes.
MMCFG Base
This feature determines the lowest MMCFG (Memory-Mapped Configuration) base assigned
to PCI devices. The options are 1G, 1.5G, 1.75G.
2G
, 2.25G, and 3G.
NVMe Firmware Source
This feature determines which type of the NVMe firmware should be used in your system.
The options are
Vendor Defined Firmware
and AMI Native Support.
VGA Priority
This feature selects the graphics device to be used as the primary video display for system
boot. The options are Auto,
Onboard
and Offboard.
CPU1 Slot1 PCI-E 3.0 x16 OPROM/CPU1 Slot2 PCI-E 3.0 x8 OPROM/ Slot/SIOM: CPU1
PCI-E 3.0 x16 OPROM
Select EFI to allow the user to boot the computer using an EFI (Expansible Firmware Interface)
device installed on the PCI-E slot specified by the user. Select Legacy to allow the user to
boot the computer using a legacy device installed on the PCI-E slot specified by the user. The
options are Disabled,
Legacy
and EFI. (
Note:
Riser card names may differ in each system.)
Bus Master Enable
Select Enabled to enable the Bus Driver Master bit. The options are Disabled and
Enabled
.
Onboard NVMe1 Option ROM/Onboard NVMe2 Option ROM/Onboard NVMe3 OptionROM/
Onboard NVMe4 Option ROM
Select Disabled to deactivate the selected slot, Legacy to activate the slot in legacy mode,
and EFI to activate the slot in EFI mode. The options are Disabled, Legacy, and
EFI
.
