[U-Boot] PCI-E problems on Kilauea board

[Felix Radensky]

Stefan Roese wrote:
> Hi Felix,
>
> On Monday 16 February 2009, Felix Radensky wrote:
>   
>> I have several PCI-E related  problems on Kilauea board Rev 1.2
>>
>> 1. With u-boot v2009.01 and latest git I'm getting machine check
>>     exception when PCI-E card is plugged into slot 0. There's no
>>     problem if the same card is plugged into slot 1.
>>
>>     This seems to be a regression introduced after
>> 2008.10-rc2-02699-g725c8dd
>>     (version shipped on AMCC resource CD), as with this version both slots
>>     function properly.
>>
>>     Any hints what could be the problem with latest u-boots ?
>>     
>
> I just checked on my Kilauea and reproduced the problem. No, I don't have any 
> clue right now where this problem is generated. I can't remember any issues 
> with PCIe slot 1 on Kilauea.
>
> Perhaps you could try to find the git commit introducing this issue by 
> using "git bisect"?
>
> <snip>
>
>   
According to "git bisect" the problem was introduced by this commit:

30e76d5e3bc4c5208ee63585fe12b409d9308cd8 is first bad commit
commit 30e76d5e3bc4c5208ee63585fe12b409d9308cd8
Author: Kumar Gala <galak at kernel.crashing.org>
Date:   Tue Oct 21 08:36:08 2008 -0500

    pci: Allow for PCI addresses to be 64-bit

    PCI bus is inherently 64-bit.  While not all system require access to
    the full 64-bit PCI address range some do.  This allows those systems
    to enable the full PCI address width via CONFIG_SYS_PCI_64BIT.

Felix.