[U-Boot] trouble with u-boot and bist fail on pcie adapter

[Wolfgang Denk]

Dear Ayman El-Khashab,

In message <4ADC055C.6080006 at elkhashab.com> you wrote:
> I am using a recent version of u-boot (git from the past couple of 
> weeks) and have an LSI SAS adapter on a canyonlands board.
> What I see happening is that u-boot reads the bist bit, then does 
> numerous bar accesses, then sets the bist fail and latency words.
> Once the bist is set to fail, the lsi adapter doesn't respond to 
> anything else and so Linux fails to see it when it boots.  I've tried 
> turning
> off pcie support in u-boot, in that case the bist did not get written 
> but Linux kernel crashed during the init of the adapter.  The LSI
> adapter does work fine in a ubuntu PC, so the hardware is likely good.  
> This adapter is an LSISAS2008 gen 2 pcie board.  On the
> PC it uses both IO and MEM spaces.

Did you try setting the "pciscandelay" variable? Try setting it to 5
(or 10) [seconds]. See also

commit 6efc1fc0b63e55f94c5bc61d8dd23c918e3bc778
Author: Grzegorz Bernacki <gjb at semihalf.com>
Date:   Fri Sep 7 18:35:37 2007 +0200

    [PPC440SPe] PCIe environment settings for Katmai and Yucca
    
    - 'pciconfighost' is set by default in order to be able to scan bridges
    behind the primary host/PCIe
    
    - 'pciscandelay' env variable is recognized to allow for user-controlled
    delay before the PCIe bus enumeration; some peripheral devices require a
    significant delay before they can be scanned (e.g. LSI8408E); without the
    delay they are not detected
    
    Signed-off-by: Grzegorz Bernacki <gjb at semihalf.com>

Best regards,

Wolfgang Denk

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