Setting Up BIOS Configuration Parameters 171
If you encounter the Option ROM space exhausted condition even after disabling all
devices from which you do not intend to boot, then disable additional Option ROMs.
Under some circumstances it might be necessary to disable Option ROMs for all
devices except for the primary boot device.
Related Information
■ “Access BIOS Setup Utility Menus” on page 164
■ “Configure Option ROM Settings” on page 192
I/O Resource Allocation
The system provides 64 KB of I/O address space. With the increasing number of
PCIe devices supported on the system, there is a possibility that there are not enough
I/O resources for all the devices. Setup options are available to enable or disable the
I/O resource allocation for each PCIe slot. The default for this option is enabled.
When enabled, I/O resources are allocated to the device as normal. When disabled,
I/O resources are not allocated to the device.
If there are one or more Sun Quad Port Gigabit Ethernet PCIe Low Profile Adapter
cards installed in the server, then the BIOS might detect a condition where legacy
I/O address space resources are exhausted. The following is a common form of error
that might be logged:
6491 Tue Dec 7 14:19:57 2012 IPMI Log minor
ID = a5a9 : 12/07/2012 : 14:19:57 : System Firmware Error :
sensor number
= 0x00 : PCI resource exhaustion : Bus 147 Device 0 Func 0
6490 Tue Dec 7 14:19:57 2012 IPMI Log minor
ID = a5a8 : 12/07/2012 : 14:19:57 : System Firmware Error :
sensor number
= 0x00 : PCI resource exhaustion : Bus 147 Device 0 Func 1
To eliminate the PCI resource exhaustion condition, you should disable I/O resource
allocation for any slot in which the Sun Quad Port Gigabit Ethernet PCIe Low Profile
Adapter card is installed unless you intend to use that card as a bootable device. If
you intend to use that card as a bootable device and you are encountering a PCI
resource exhaustion event for that specific device, then it is necessary to disable I/O
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