[meta-xilinx] [PATCH v1] qemuzynmp: Add the qemuzynqmp machine

Wed Jun 15 10:49:34 PDT 2016

On Wed, Jun 15, 2016 at 9:40 AM, Alistair Francis
<alistair.francis at xilinx.com> wrote:
> On Wed, Jun 15, 2016 at 7:25 AM, Nathan Rossi <nathan at nathanrossi.com> wrote:
>> On Wed, Jun 15, 2016 at 7:45 AM, Alistair Francis
>> <alistair.francis at xilinx.com> wrote:
>>> On Tue, Jun 14, 2016 at 7:11 AM, Nathan Rossi <nathan at nathanrossi.com> wrote:
>>>> On Tue, Jun 14, 2016 at 2:25 AM, Alistair Francis
>>>> <alistair.francis at xilinx.com> wrote:
>>>>> On Tue, May 17, 2016 at 9:40 AM, Alistair Francis
>>>>> <alistair.francis at xilinx.com> wrote:
>>>>>> On Tue, May 17, 2016 at 6:27 AM, Nathan Rossi <nathan at nathanrossi.com> wrote:
>>>>>>> On Tue, May 17, 2016 at 8:20 AM, Alistair Francis
>>>>>>> <alistair.francis at xilinx.com> wrote:
>>>>>>>> On Mon, May 16, 2016 at 9:39 AM, Alistair Francis
>>>>>>>> <alistair.francis at xilinx.com> wrote:
>>>>>>>>> On Sun, May 15, 2016 at 10:10 AM, Peter Crosthwaite
>>>>>>>>> <crosthwaitepeter at gmail.com> wrote:
>>>>>>>>>> On Sun, May 15, 2016 at 1:17 AM, Nathan Rossi <nathan at nathanrossi.com> wrote:
>>>>>>>>>>> On Sat, May 14, 2016 at 2:54 AM, Alistair Francis
>>>>>>>>>>> <alistair.francis at xilinx.com> wrote:
>>>>>>>>>>>> On Fri, May 13, 2016 at 2:35 AM, Nathan Rossi <nathan at nathanrossi.com> wrote:
>>>>>>>>>>>>> On Fri, May 13, 2016 at 6:11 AM, Alistair Francis
>>>>>>>>>>>>> <alistair.francis at xilinx.com> wrote:
>>>>>>>>>>>>>> Add the qemuzynqmp machine based on the physical ZCU02 revB board.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Hi Alistair,
>>>>>>>>>>>>>
>>>>>>>>>>>>> So I am a little confused, is this machine supposed to emulate the
>>>>>>>>>>>>> ep108 (the args to QEMU appear to be for the ep108) or the zcu102? or
>>>>>>>>>>>>> are both able to be emulated?
>>>>>>>>>>>>
>>>>>>>>>>>> Hey Nathan,
>>>>>>>>>>>>
>>>>>>>>>>>> This machine is supposed to be emulating the ZCU102.
>>>>>>>>>>>>
>>>>>>>>>>>> At the moment we only have the EP108 in upstream QEMU. It isn't worth
>>>>>>>>>>>> adding a ZCU102 model upstream yet as at the moment we don't have
>>>>>>>>>>>> enough modeled upstream to notice any differences between the boards.
>>>>>>>>>>>
>>>>>>>>>>> Ah ok, so in the future QEMU will have models for both the EP108 and
>>>>>>>>>>> the ZCU102 boards. In that case I don't actually see a need for a
>>>>>>>>>>> 'qemuzynqmp' machine, since the ep108-zynqmp already provides the
>>>>>>>>>>> setup for QEMU. The same can be done for the zcu102-zynqmp board, this
>>>>>>>>>>> would also make it easier to maintain consistency (aka changes only
>>>>>>>>>>> need to be made to the zcu102-zynqmp machine).
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> +1, qemuzynq as well as the "zynq" machine model in upstream QEMU are
>>>>>>>>>> legacy convention that we should replace with concrete boards going
>>>>>>>>>> forward.
>>>>>>>>>
>>>>>>>>> Ok, I'll look into adding a ZCU102 machine similar to what we do for the EP108.
>>>>>>>>
>>>>>>>> How can I run the EP108 on QEMU? I can't find how I can start QEMU with Yocto.
>>>>>>>
>>>>>>> There is no runqemu support though the ep108 machine is setup to build
>>>>>>> qemu-native for use. But there was a guide created back when first
>>>>>>> adding zynqmp, essentially it is manually running QEMU with the
>>>>>>> correct args. http://www.wiki.xilinx.com/Yocto+for+zynqmp
>>>>>>
>>>>>> Ok, but I'm looking for adding runqemu support to Yocto. The way that
>>>>>> everyone else seems to do it is by architecture and not by board so I
>>>>>> think that is my only option.
>>>>>>
>>>>>> Do you have a better idea of adding runqemu support?
>>>>>
>>>>> This has been accepted in poky master branch with this commit:
>>>>> commit ff3bc6c61f5946aa5e91a77442d828ec1a03387d
>>>>> Author: Alistair Francis <alistair.francis at xilinx.com>
>>>>> Date:   Thu May 12 14:37:39 2016 -0700
>>>>>
>>>>>     runqemu: Add suport for qemuzynqmp
>>>>>
>>>>>     (From OE-Core rev: d2a7c1db9bff6ae3844e3d017e94f29d1501bf57)
>>>>>
>>>>>     Signed-off-by: Alistair Francis <alistair.francis at xilinx.com>
>>>>>     Signed-off-by: Ross Burton <ross.burton at intel.com>
>>>>>     Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
>>>>>
>>>>>
>>>>> Can we work on merging this in meta-xilinx now?
>>>>
>>>> I will accept the addition of this machine given that it will only
>>>> exist for the purposes of runqemu, and it will be removed in the
>>>> future once runqemu is able to handle using the actual machine
>>>> targets. But there should be no specific configuration/overrides for
>>>> this machine, it should be equivalent to the target QEMU model, in
>>>> this case ep108-zynqmp.
>>>
>>> Agreed! I would much rather have EP108 and ZCU102 machines which can
>>> boot on QEMU, but that doesn't seem to be how the rest of Yocto works.
>>>
>>>>
>>>> But between this patch, your patch to runqemu and that with qemu 2.6.0
>>>> zynqmp does not boot correctly. I don't see a point in merging this
>>>> addition until all parts are working as expected. This means that
>>>> runqemu should be setup to direct boot the kernel, as this works fine
>>>> with qemu 2.5 (and should also work fine with 2.6 once the cpu bring
>>>> up issue is resolved).
>>>
>>> How are you testing with QEMU 2.6? I am unable to build images with
>>> meta-xilinx and poky both at master.
>>
>> Some of the components in meta-xilinx still don't support gcc 6 yet.
>> So make sure you specify GCCVERSION = "5.%" in your local.conf.
>>
>> If you get a task hash mismatch error on the core-image-* task, just
>> re-run bitbake. I believe there is a patch for oe-core to fix it on
>> the oe-core list (it relates to having cpio and cpio.gz.u-boot in the
>> IMAGE_FSTYPES).
>
> Thanks, that was my problem.
>
> It looks like QEMU Linux boot is working for EP108 on Krogoth and only
> u-boot works on master.
>
> As the qmeuzynqmp machine won't be applied to Krogoth can I re-send it
> with the fixes you mentioned before targeting u-boot?
> Then we need to figure out the Linux boot issue and update the runqemu
> script to swap over to Linux boot.

I figured out the Linux boot issue. Running some tests then I should
have a patch series to fix everything for the EP108 on master and add
the runqemu support.

Then EP108 QEMU boot should work on Krogoth and master (with runqemu
support as well) :)

Thanks,

Alistair

>
> Thanks,
>
> Alistair
>
>>
>> Regards,
>> Nathan
>>
>>>
>>> Thanks,
>>>
>>> Alistair
>>>
>>>>
>>>> ---
>>>>
>>>> With regards to this patch, please change it so that it is just
>>>> including the ep108 machine. Something like the following in
>>>> qemuzynqmp.conf.
>>>>
>>>> MACHINEOVERRIDES =. "ep108-zynqmp:"
>>>> require conf/machine/ep108-zynqmp.conf
>>>>
>>>> As for setting the "QEMU_DTB", this can be set in the ep108 conf. I
>>>> would also suggest using the kernel_devicetree/imagetype to set it.
>>>>
>>>> QEMU_DTB = "${KERNEL_IMAGETYPE}-${@os.path.splitext(os.path.basename(d.getVar("KERNEL_DEVICETREE",
>>>> True)))[0]}"
>>>>
>>>> As for the kernel changes, that kernel config is broken for QEMU.
>>>>
>>>> Regards,
>>>> Nathan
>>>> --
>>>> _______________________________________________
>>>> meta-xilinx mailing list
>>>> meta-xilinx at yoctoproject.org
>>>> https://lists.yoctoproject.org/listinfo/meta-xilinx
>> --
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