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

[Alistair Francis]

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.

Thanks,

Alistair

>
> 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
>>>>>
>>>> --
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