Uefi I/O Device Connection Solution - HP Integrity Superdome 2 16-socket Administrator's Manual

Figure 21 Remote Console Tab (nPar)
Figure 22 Remote Console Tab (vPar)

UEFI I/O device connection solution

On platforms like Superdome 2, connecting all UEFI drivers to all the devices might take a very
long time to complete, and this level of device connection is typically not needed. Similar to the
sx2000 Superdome product, the default behavior on Superdome 2 does not force the connection
of all UEFI I/O drivers to all devices. UEFI Shell commands are provided to manually connect more
devices. Alternatively, the default device connection policy may be modified for all future boots
using the 'ioconfig' command at the UEFI Shell.
For Superdome 2, for a partition in a first boot scenario (a new partition or a partition whose
NVRAM was cleared) the ioconfig fast_init setting is ON, and UEFI loads and connects drivers
from all assigned I/O devices in the lowest numbered device bay (blade) and lowest numbered
I/O bay (IOX) for the partition. To reduce boot time, I/O devices from other bays are not connected.
This occurs before displaying the UEFI Front Page. For example, a partition (vPar) is created by
assigning processors and memory from blade1/1, and I/O is assigned from blades 1/2 and 1/3,
and I/O bays 5/1 and 5/2. For this partition, blade 1/2 is the lowest numbered device bay from
which the I/O is assigned to the partition, and I/O bay 5/1 is the lowest numbered I/O bay from
which the I/O is assigned to the partition. UEFI will load and connect drivers to I/O devices
assigned from blade 1/2 and I/O bay 5/1.
56 Booting and resetting Partitions (nPartitions and vPars)