marvell kirkwood / openrd-base kernel freeze on bootup with PICe->PCI bridge

[Dieter Kiermaier]

Hi all,

I've got a strange problem with latest git kernel. If I connect a PCIe->PCI bridge (without any connected PCI device!)
to my openrd-base board the kernel freezes during bootup if PCI is enabled:
Filename 'uImage_openrd'.
Load address: 0x800000
Loading: #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         ############
done
Bytes transferred = 2390120 (247868 hex)
## Booting kernel from Legacy Image at 00800000 ...
   Image Name:   Linux-2.6.32-rc5-00081-g964fe08-
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2390056 Bytes =  2.3 MB
   Load Address: 00008000
   Entry Point:  00008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux............................................................................................................................................................ done.

The PCIe->PCI bridge is a Marvell 88SB2211 evaluation board and I expect it works well - at least it does in all other environments I've tested so far.

If I insert eg a PCIe Network card everything works fine.
With former marvell 2.6.22 stock kernel / u-boot kernel boots up and I can access PCI card connected after my bridge.

Please can someone help me to track this down?
Some tips how to debug such a problem using openocd are very welcome, too!
I'm completely lost in space :(



Many thanks,
Dieter