Device Family: Intel® Arria® 10 GT

Device Family: Intel® Arria® 10 GX

Device Family: Intel® Arria® 10 SX

Device Family: Arria® II GX

Device Family: Arria® V GT

Device Family: Arria® V GX

Device Family: Arria® V GZ

Device Family: Arria® V ST

Device Family: Cyclone® IV GX

Device Family: Cyclone® V GT

Device Family: Cyclone® V GX

Device Family: Cyclone® V ST

Device Family: Cyclone® V SX

Device Family: Stratix® IV GX

Device Family: Stratix® V GS

Device Family: Stratix® V GT

Device Family: Stratix® V GX

Type: Answers

Area: Intellectual Property


IP Product: PCI Express 1/2/4/8 Lanes (x8)

Why does my system hang/lock up during enumeration of the PCIe device?

Description

Your system will hang or lock up if you incorrectly set your BAR sizes to very large values which outstrip the available host memory.  In these cases the BIOS cannot supply the appropriate amount of memory during enumeration, and the system locks up.

Workaround/Fix

You must keep your BAR sizes in line with the available memory on your system.  BAR sizes of 4GB or lower are sufficiently small enough in most cases.