[meta-xilinx] Xilinx SDK Query for ZC702 and Zedboard

[Nathan Rossi]

On Thu, Jul 30, 2015 at 12:11 AM, Krishnakar, Srikanth
<Srikanth_Krishnakar at mentor.com> wrote:
> Hi Nathan,
>
> Thanks for your quick reply ! Please find my inline reply below:
>
> -----Original Message-----
> From: Nathan Rossi [mailto:nathan at nathanrossi.com]
> Sent: 29 July 2015 17:45
> To: Krishnakar, Srikanth
> Cc: meta-xilinx at yoctoproject.org
> Subject: Re: [meta-xilinx] Xilinx SDK Query for ZC702 and Zedboard
>
> On Wed, Jul 29, 2015 at 9:44 PM, Krishnakar, Srikanth <Srikanth_Krishnakar at mentor.com> wrote:
>> Hi All,
>>
>>
>> I would like to know if PETALINUX 2015.2 release is based on yocto "meta-xilinx" layer ? I noticed that meta-xilinx is still building linux-xlnx-3.14 kernel where as Petalinux-2015.2 is being shipped with linux-xlnx-3.19 kernel. I have ZC702 & Zedboard to boot the Xilinx SDKs, May I know which is the latest sdk for these boards ?
>
> I am not sure what PetaLinux 2015.2 is based on or what it includes.
> However meta-xilinx has nothing to do with PetaLinux, there is no implicit or explicit intention to track or match PetaLinux versions of anything. As for the kernels in meta-xilinx the linux-xlnx_3.14 kernel is based on the "xlnx_3.14" branch of the linux-xlnx repo. The linux-xlnx 3.19 kernel recipes in meta-xilinx are based on the "xilinx-v2015.2" tag of the linux-xlnx repo (aka the most recent release).
>
> When you say "which is the latest sdk for these boards" what do you mean exactly?
>
> I mean the release version. I saw the tag 2015.2, Are these the quarterly releases ?

So Xilinx does their quarterly releases, and the Xilinx kernel follows
the same release process. Which is why you will see tags in the kernel
(linux-xlnx) and u-boot (u-boot-xlnx), etc repos for each of the
quarterly release versions.

>
>>
>> How actively the meta-xilinx is synced up with petalinux releases ? Should I go with petalinux SDK's for my boards or should I follow the meta-xilinx branches from Yocto repository ?
>
> As mentioned above the meta-xilinx layer has nothing to do with PetaLinux. However the plan is to continue to track the Xilinx kernel with recipes for updated releases of the Xilinx kernel.
>
> PetaLinux is a separate product/toolkit that has little to nothing to do with the Yocto/OE tool flow. So the question you should really be answering is do you want to use Yocto/OE or PetaLinux?
>
> Understood. I would really want to follow "Yocto/OE".
>
>>
>> Will there be any linux-xlnx-4.0 release this year ?
>
> I don't see any reason why there wont be a 4.0 or newer release of linux-xlnx this year (either for the 2015.3 or 2015.4 release cycles), but I don't speak for Xilinx so you would need to confirm that is the case. But if you want to use a 4.0 linux-xlnx kernel right now, the master ref of the linux-xlnx repo is currently based on top of the 4.0 release. With the "linux-xlnx-dev" recipe in meta-xilinx you can use that kernel right now.
>
> Sounds reasonable. Does 2015.2 (linux-3.19) supports Zedboard or just ZC702 only ?

Generally speaking linux kernel (whether that is the linux-xlnx,
linux-yocto or a mainline kernel) will support any board that uses the
Zynq SoC (you will need a device-tree for the board though). However
depending on drivers required/etc some features will not function.

But specifically yes the 2015.2/linux-xlnx_3.19 kernel supports both
the ZedBoard and ZC702. There is also machine configurations in the
meta-xilinx layer for those boards as well as the zc706, picozed,
microzed and zybo boards.

Regards,
Nathan

>
> Regards,
> Nathan
>
> Thanks for your patience!
>
> Regards,
> Skrishna
>
>>
>> TIA!
>> --
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