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

[Peter Crosthwaite]

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.

Regards,
Peter

>>
>>>
>>>>
>>>> Signed-off-by: Alistair Francis <alistair.francis at xilinx.com>
>>>> ---
>>>> This patch relies on QEMU ZynqMP support in the Yocto scripts.
>>>> I am sending a patch for that as well.
>>>
>>> Also in regards to adding the qemu config to oe-core/runqemu. It might
>>> also be worth looking into a recent RFC that was posted for oe-core
>>> (http://patchwork.openembedded.org/patch/122049/).
>>
>> Hmm... interesting. Thanks for pointing that out.
>>
>> I don't follow the OE-core mailing list (until yesterday) do you know
>> if that series is gaining traction?
>
> I believe so, at least that is how it appears from the discussions on
> list. I am definitely interested in seeing it applied, I haven't had a
> chance to test it just yet though.
>
> Regarding getting a zynqmp machine into oe-core/runqemu. If this
> runqemu refactoring is going to make it into the next oe release then
> I recommend working towards that as opposed to just getting zynqmp
> support into runqemu. As it would also better work towards the ability
> to have both the ep108 and zcu102 models available in the future.
>
> Regards,
> Nathan
>
>>
>> Thanks,
>>
>> Alistair
>>
>>>
>>> Regards,
>>> Nathan
>>>
>>>>
>>>> conf/machine/qemuzynqmp.conf        | 21 +++++++++++++++++++++
>>>>  recipes-kernel/linux/linux-xlnx.inc |  4 +++-
>>>>  2 files changed, 24 insertions(+), 1 deletion(-)
>>>>  create mode 100644 conf/machine/qemuzynqmp.conf
>>>>
>>>> diff --git a/conf/machine/qemuzynqmp.conf b/conf/machine/qemuzynqmp.conf
>>>> new file mode 100644
>>>> index 0000000..c5ca3c9
>>>> --- /dev/null
>>>> +++ b/conf/machine/qemuzynqmp.conf
>>>> @@ -0,0 +1,21 @@
>>>> +#@TYPE: Machine
>>>> +#@NAME: qemuzynqmp
>>>> +#@DESCRIPTION: Zynq UltraScale+ QEMU machine support ('xlnx-ep108' model)
>>>> +
>>>> +require conf/machine/include/tune-zynqmp.inc
>>>> +require conf/machine/include/machine-xilinx-default.inc
>>>> +require conf/machine/include/machine-xilinx-board.inc
>>>> +
>>>> +MACHINE_FEATURES = "rtc ext2 ext3 vfat usbhost"
>>>> +
>>>> +EXTRA_IMAGEDEPENDS += "qemu-native qemu-helper-native"
>>>> +
>>>> +UBOOT_MACHINE = "xilinx_zynqmp_zcu102_revB_defconfig"
>>>> +
>>>> +SERIAL_CONSOLE = "115200 ttyPS0"
>>>> +
>>>> +KERNEL_DEVICETREE = "xilinx/zynqmp-zcu102-revB.dtb"
>>>> +QEMU_DTB = "Image-zynqmp-zcu102-revB"
>>>> +
>>>> +PREFERRED_PROVIDER_virtual/kernel ?= "linux-xlnx"
>>>> +PREFERRED_PROVIDER_virtual/bootloader ?= "u-boot-xlnx"
>>>> diff --git a/recipes-kernel/linux/linux-xlnx.inc b/recipes-kernel/linux/linux-xlnx.inc
>>>> index fe0a2ad..f152a7d 100644
>>>> --- a/recipes-kernel/linux/linux-xlnx.inc
>>>> +++ b/recipes-kernel/linux/linux-xlnx.inc
>>>> @@ -19,10 +19,12 @@ require recipes-kernel/linux/linux-yocto.inc
>>>>
>>>>  DESCRIPTION = "Xilinx Kernel"
>>>>
>>>> +KBUILD_DEFCONFIG_qemuzynqmp = "xilinx_zynqmp_defconfig"
>>>> +KCONFIG_MODE_qemuzynqmp = "--alldefconfig"
>>>> +
>>>>  require linux-xilinx-configs.inc
>>>>  require linux-xilinx-machines.inc
>>>>
>>>>  KERNEL_FEATURES_append = " bsp/xilinx/soc/linux-xlnx/drivers/xilinx.scc"
>>>>  KERNEL_FEATURES_append_zynq = " bsp/xilinx/soc/linux-xlnx/drivers/zynq7.scc"
>>>>  KERNEL_FEATURES_append_zynqmp = " bsp/xilinx/soc/linux-xlnx/drivers/zynqmp.scc"
>>>> -
>>>> --
>>>> 2.7.4
>>>>
>>> --
>>> _______________________________________________
>>> meta-xilinx mailing list
>>> meta-xilinx at yoctoproject.org
>>> https://lists.yoctoproject.org/listinfo/meta-xilinx
> --
> _______________________________________________
> meta-xilinx mailing list
> meta-xilinx at yoctoproject.org
> https://lists.yoctoproject.org/listinfo/meta-xilinx