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Re: Software reboot problem




----- Original Message ----- 
From: "girerd" <girerd@xxxxxxx.fr>
To: <johana@xxxxxxx.com>
Cc: "Pieter Grimmerink" <mailinglists@xxxxxxx.nl>; "Mikael Starvik"
<starvik@xxxxxxx.com>
Sent: Thursday, March 11, 2004 9:18 AM
Subject: Re: Software reboot problem


> Hi,
>
> We have also a design with a MCM and a FPGA connected through the bus.
> The boot at power on and after a hard reset through the MRESET input is
> correct most of the time. But sometimes we can't reboot the MCM through
> the MRESET. In this case it seems that the only way to reboot is a power
> Off/On.
>
> I noticed another strange behavior. Just after a MCM flash (by flashit).
> The reboot
> just after the flash seems correct but the interface between the FPGA
> and the ETRAX doesn't
> work correctly. I'am just starting the investigation, but it seems that
> the bus is not configured
> correctly (i.e the R_BUS_CONFIG and the R_WAIT_STATES have not the
> correct values).
> It is correct again after a reset and all reboot (excepted somes cases
> explained above) !
>
> Best regards,
>
> Claude GIRERD
>
> Institut de Physique Nucléaire de Lyon
> CNRS/IN2P3
> 4, rue Enrico Fermi
> 69622 Villeurbanne cedex
> France

Please note that R_BUS_CONFIG and R_WAIT_STATES is set in the rescue code
and that is not modified when doing flashit (even if you changed the kernel
config) - try setting the values of R_BUS_CONFIG and R_WAIT_STATES in your
driver as well.

/Johan