Cisco Systems UCSCPCIEBTG, 57712 PCI Configuration Parameters Name Description, Mmio Above 4GB

BIOS Parameters by Server Model

Advanced BIOS Parameters for C22 and C24 Servers

PCI Configuration Parameters
Name	Description
MMIO Above 4GB	Whether to enable or disable memory mapped I/O of 64-bit PCI
	devices to 4GB or greater address space. Legacy option ROMs
	are not able to access addresses above 4GB. PCI devices that
	are 64-bit compliant but use a legacy option ROM may not
	function correctly with this setting enabled. This can be one of
	the following:
	• Disabled—The server does not map I/O of 64-bit PCI
	devices to 4GB or greater address space.
	• Enabled—The server maps I/O of 64-bit PCI devices to
	4GB or greater address space.
ASPM Support	Allows you to set the level of ASPM (Active Power State
	Management) support in the BIOS.This can be one of the
	following:
	• Disabled—ASPM support is disabled in the BIOS.
	• Force L0s—Force all links to L0 standby (L0s) state.
	• Auto—The CPU determines the power state.
VGA Priority	Allows you to set the priority for VGA graphics devices if
	multiple VGA devices are found in the system. This can be one
	of the following:
	• Onboard—Priority is given to the onboard VGA device.
	BIOS post screen and OS boot are driven through the
	onboard VGA port.
	• Offboard—Priority is given to the PCIE Graphics adapter.
	BIOS post screen and OS boot are driven through the
	external graphics adapter port.
	• —Priority is given to the PCIE Graphics adapter, and the
	onboard VGA device is disabled.
	Note	The vKVM does not function when the onboard
		VGA is disabled.

	Cisco UCS C-Series Servers Integrated Management Controller CLI Configuration Guide, Release 1.5
196	OL-28893-01