Chapter 4: BIOS
91
PCIe/PCI/PnP Conguration
The following information will display:
• PCI Bus Driver Version
• PCI Devices Common Settings:
Above 4G Decoding (Available if the system supports 64-bit PCI decoding)
Select Enabled to decode a PCI device that supports 64-bit in the space above 4G Address.
The options are Disabled and Enabled.
SR-IOV Support
Use this feature to enable or disable Single Root IO Virtualization Support. The options are
Disabled and Enabled.
MMIO High Base
Use this item to select the base memory size according to memory-address mapping for the
IO hub. The options are 56 TB, 40 TB, 24 TB, 16 TB, 4 TB, and 1 TB.
MMIO High Granularity Size
Use this item to select the high memory size according to memory-address mapping for the
IO hub. The options are 1 GB, 4 GB, 16 GB, 64 GB. 256 GB, and 1024 GB.
PCI PERR/SERR Support
Select Enabled to allow a PCI device to generate a PERR/SERR number for a PCI Bus Signal
Error Event. The options are Disabled and Enabled.
Maximum Read Request
Use this item to select the Maximum Read Request size of the PCI-Express device, or select
Auto to allow the System BIOS to determine the value. The options are Auto, 128 Bytes, 256
Bytes, 512 Bytes, 1024 Bytes, 2048 Bytes, and 4096 Bytes.
MMCFG Base
Use this item to select the low base address for PCIE adapters to increase base memory.
The options are 1G, 1.5G, 1.75G, 2G, 2.25G. and 3G.
NVMe Firmware Source
Use this item to select the NVMe rmware to support booting. The options are Vendor
Dened Firmware and AMI Native Support. The default option, Vendor Dened Firmware,
is pre-installed on the drive and may resolve errata or enable innovative functions for the
drive. The other option, AMI Native Support, is offered by the BIOS with a generic method.
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