Checksum Error on Leon3 Qemu patches

[Jiri Gaisler]

On 8/17/19 8:23 PM, Joel Sherrill wrote:
>
>
> On Sat, Aug 17, 2019, 1:07 PM Jiri Gaisler <jiri at gaisler.se
> <mailto:jiri at gaisler.se>> wrote:
>
>
>     On 8/16/19 11:03 PM, Juan Rafael García Blanco wrote:
>>     Hi,
>>
>>     AFAIK, the last qemu major version includes support for leon3.
>>     But I dont't know if that work was based on these patches.
>
>     Indeed. Qemu git head now includes leon3 plug&play and should be
>     able to run RTEMS images unpatched. Is there a reason why the qemu
>     version built by RSB is from June 2015 ..?
>
>
> Sadly no one has updated it. Beyond Leon, Zynq and PC, what should be
> tested?
>
> Riscv status in head?
>
> Beagle?
>
> Any other bsps we use with Qemu?
>
> I'd love to see it updated. It's a pain to test across all the hosts
> and get working.


Unfortunately, qemu HEAD cannot execute RTEMS leon3 images unpatched.
The startup code needs a (simple) tweak, and the implementation of the
plug&play is not quite correct. An RTEMS binary fails to detect the
interrupt controller and subsequently terminates. I have spent a few
hours on it but the bug is rather elusive and I am not sure I will be
able to track it down. Debugging low-level target code on qemu is not
exactly user friendly  :-) ...


>
>     Jiri.
>
>>
>>     Regards,
>>     Juan.
>>
>>     On Fri, Aug 16, 2019, 11:00 PM Jiri Gaisler <jiri at gaisler.se
>>     <mailto:jiri at gaisler.se>> wrote:
>>
>>
>>         On 8/15/19 12:09 AM, Joel Sherrill wrote:
>>         > On Wed, Aug 14, 2019 at 4:42 PM Chris Johns
>>         <chrisj at rtems.org <mailto:chrisj at rtems.org>> wrote:
>>         >> On 15/8/19 12:46 am, Joel Sherrill wrote:
>>         >>> Qemu isn't building due to a checksum error.
>>         >>>
>>         >>> These patches are at gaisler.org <http://gaisler.org>. I
>>         don't know where to move them but
>>         >>> eventually they should be moved.
>>         >> You can post them to qemu's patchworks and then get them
>>         from there. The RSB
>>         >> supports fetching from patchworks.
>>         > Jiri: Are these already on patchworks by any chance?
>>
>>         Not that I am aware of. The checksum probably changed because
>>         the original patches were lost during a server rehost, and I
>>         recovered some earlier version from a backup disk. The
>>         patches do not apply cleanly to the latest version of qemu:
>>
>>         + /bin/cat
>>         /home/jiri/ibm/src/rtems/rtems-source-builder/bare/patches/0001-LEON3-Add-emulation-of-AMBA-plug-play.patch
>>         + /usr/bin/patch -p1
>>         patching file hw/sparc/Makefile.objs
>>         patching file hw/sparc/grlib_ambapnp.c
>>         patching file hw/sparc/leon3.c
>>         Hunk #1 succeeded at 207 (offset -7 lines).
>>         patching file include/hw/sparc/grlib.h
>>         Hunk #1 FAILED at 117.
>>         1 out of 1 hunk FAILED -- saving rejects to file
>>         include/hw/sparc/grlib.h.rej
>>
>>         Could be that qemu has moved since the patches were make, I
>>         will try to take a look ...
>>
>>         Jiri.
>>
>>
>>
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>>
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