Checksum Error on Leon3 Qemu patches
Jiri Gaisler
jiri at gaisler.se
Sun Aug 18 20:30:10 UTC 2019
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 GarcĂa 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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