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Re: [Discuss-gnuradio] Booting Zynq/Gnuradio

From: Ivan C.
Subject: Re: [Discuss-gnuradio] Booting Zynq/Gnuradio
Date: Tue, 20 Aug 2013 12:55:43 -0400

On Tue, Aug 20, 2013 at 11:19 AM, Jan Schiefer <address@hidden> wrote:
> HI Ivan,
>> I've been working through the wiki as well.  In my setup I had to also
>> replace the FSBL with the default Xilinx one to get the system to boot
>> (ZC702 eval board).  If you stop u-boot from autobooting you can go in and
>> change the environment variables (printenv, setenv) and when you have
>> everything setup you can 'saveenv' and the state will be saved to flash.
>> Now the system boots smoothly.  Since I had some issues with the booting
>> process I'm not sure if the system.bit file is loaded properly.  To make
>> sure, I load the bit file using /dev/xdevcfg (have to mknod, convert .bit
>> to .bin, etc.).  Then I insmod the user_peripheral.ko (had to copy it into
>> /lib/modules/ for insmod to find it).
> I was wondering how one would load a bit file after booting, so this
> definitely a good tip. I will try that out once I get a little further
> along.
> Meanwhile I'll figure out the right boot environment variables for my
> Zedboard next.
> Thanks,
>    Jan

Hi Jan,

Take a look at 

string search for /* Default environment */

After the system boots, I had to make a minor change to the fir filter
example.  On the ZC702, I was getting a segfault as udev wasn't
finding devcfg.

/sys/devices/amba.0/ lists f8007000.ps7-dev-cfg, modifying the call to
udev_enumerate_add_match_sysname to look for this device instead of
f8007000.devcfg and the example now works.  Thanks to Jon and company
for this work!


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