When you load your bitstream, are you still loading all the driver
modules for the original bitstream? e.g. video, serial, SD card,
etc...? Those drivers could be getting confused and locking up Linux.
If you use your own bitstream, you should probably disable loading of
those drivers.
//Jesse Off
--- In "Ross" <> wrote:
>
>
> Yes, I can confirm this problem.
>
> I'm not using a USB keyboard or VGA monitor, just a serial terminal.
>
> I am loading the bitstream from the *unmodified* version of TS's
> OpenCores project. Doing this sometimes hangs the serial terminal
> (and who knows what else... not really sure what's still running at
> that point.)
>
> This is definitely something TS should fix, obviously that won't be
> acceptable behavior for our project.
>
> No workaround yet other than what David mentioned about "waiting a
> while after the board boots" (also not gonna be acceptable later
on....)
>
> In case it matters, I'm running Debian GNU/Linux 3.1 with the
> 2.4.26-ts11 kernel.
>
> Ross
>
> =============
>
>
> >
> > Can anyone verify the problem detailed below, suggest a
workaround or
> > fix, or otherwise help out on this? I have a few ideas but have
> > failed to find even a workaround and would like some fresh ideas.
> >
> > (I can, however, verify the default ext2 SD filesystem recovers
nicely
> > from repeated mounted hard reboots. ;)
> >
> > Thanks all!
> > -David Wagner
> >
> >
> > PROBLEM
> > Loading a user bitstream sometimes or often hangs the TS-7300,
> > requiring a hard reboot.
> >
> > WHEN IT HAPPENS
> > Sometimes, the system hangs immediately upon loading a user
bitstream.
> > It also hangs when pressing a key on an attached USB keyboard
after a
> > user bitstream has been successfully loaded.
> > (The user bitstream is based on the boilerplate provided by TS,
and
> > includes the provided ethernet port support. The board has been
> > booted to a current Debian Sarge (dist-upgrade on 2006-09-04)
with the
> > most recent TS-supplied Linux 2.4 kernel.)
> >
> > WHEN IT DOES NOT HAPPEN
> > After waiting some amount of time between power-up and execution
of
> > load_ts7300, it works just fine, does not hang, and continues to
> > successfully load different user bitstreams. It appears this
problem
> > does not occur after the video is shut off so long as it remains
in
> > powersaving (blank) mode.
> >
> > TO REPRODUCE THIS BUG
> >
> > 1. Power up the TS-7300 with a USB keyboard and VGA monitor
attached.
> >
> > 2. On your machine with Quartus installed, unzip
ts7300_opencore.zip
> > and open ts7300_opencore.qpf in Quartus.
> >
> > 3. Compile ts7300_top.v (press the plain triangular play button).
> >
> > 4. While you wait, log in to the TS-7300 through a serial
connection.
> >
> > 5. Transfer ts7300_top.rbf to the TS-7300.
> >
> > 6. Wait for the video to blank. You may speed this along by
logging
> > in to the virtual terminal using the USB keyboard and reducing the
> > timeout to one minute: setterm -blank 1
> >
> > 7. From the serial terminal: load_ts7300 ts7300_top.rbf
> >
> > 8. Verify the TS-7300 is still responsive to the serial terminal.
> > - Issue a sync command; you are about to reboot dirty.
> >
> > 9. Hit a key on the USB keyboard attached to the TS-7300.
> >
> > 10. Verify the TS-7300 no longer responds to the serial
terminal.
> >
> > 11. Cycle the power.
> >
> > 12. Log in through a serial connection, and before the video
blanks,
> > issue a sync command, wait a few seconds, then: load_ts7300
> ts7300_top.rbf
> >
> > 13. Verify the TS-7300 no longer responds to the serial terminal.
> >
>
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