need help w/ Cora-Z7, XC7Z007S Zynq board

[Milan Obuch]

On Wed, 20 May 2020 22:57:34 -0700, John-Mark Gurney <jmg at funkthat.com>
wrote:

> Milan Obuch wrote this message on Mon, May 18, 2020 at 16:35 +0200:
> > On Mon, 18 May 2020 07:09:01 -0700, Thomas Skibo
> > <thomas-bsd at skibo.net> wrote:
> >   
> > > On Sun, May 17, 2020 at 11:13:10PM -0700, Thomas Skibo wrote:  

[ snip ]

> > > I thought I attached it to that email last night.  I guess it was
> > > late. I put the xbit2bin tool at
> > > https://www.skibo.net/zedbsd/xbit2bin.c It will strip the header
> > > and byte-swap a Xilinx .bit file and so that it's compatible with
> > > devcfg(4).
> > >   
> > 
> > Well, most probably mailing list ate it. I did get it, but you sent
> > the message directly to me, so I received no mailing list processed
> > version, but you used attachment of type text/x-csrc. Mailing list
> > accepts probably just text/plain attachments I think. But it is
> > better to have it on web :)  
> 
> Nice, now to figure out why FreeBSD on the PS stops working when the
> level shifters are enabled.  If I set hw.fpga.en_level_shifters to 0
> and program the PL, FreeBSD keeps running, but as soon as I set
> hw.fpga.level_shifters to 1, FreeBSD stops responding.
> 

Well, no experience with this one, sorry. For all my experiments I need
no messing with shifters, just programmed PL part and tested drivers to
work with my hw design...

Regards,
Milan