PCI Configuration Parameters
DescriptionName
Whetherto enable or disable memory mapped I/O of 64-bit PCI
devicesto 4GB or greater address space. Legacy option ROMs
arenot able to access addresses above 4GB. PCI devices that
are64-bit compliantbut use a legacy option ROM may not
functioncorrectly with this setting enabled. This can be one of
thefollowing:
•Disabled—Theserver does not map I/O of 64-bit PCI
devicesto 4GB or greater address space.
•Enabled—Theserver maps I/O of 64-bit PCI devices to
4GBor greateraddress space.
MMIOAbove 4GB
Allowsyou to set the level of ASPM (Active Power State
Management)support in the BIOS.This can be one of the
following:
•Disabled—ASPMsupport is disabledin theBIOS.
•ForceL0s—Force all links to L0 standby (L0s) state.
•Auto—TheCPU determinesthe power state.
ASPMSupport
Allowsyou to set the priority for VGA graphics devices if
multipleVGA devices are found in the system. This can be one
ofthe following:
•Onboard—Priorityis given to the onboard VGA device.
BIOSpost screenand OS boot are driven through the
onboardVGA port.
•Offboard—Priorityis given to the PCIE Graphics adapter.
BIOSpost screenand OS boot are driven through the
externalgraphics adapter port.
•—Priorityis given to the PCIE Graphics adapter, and the
onboardVGA deviceis disabled.
ThevKVM does not function when the onboard
VGAis disabled.
Note
VGAPriority
Cisco UCS C-Series Servers Integrated Management Controller CLI Configuration Guide, Release 1.5
196 OL-28893-01
BIOS Parameters by Server Model
Advanced BIOS Parameters for C22 and C24 Servers