[meta-xilinx] what are the canonical xilinx mailing lists/repos these days?

[Sipke Vriend]

Hi Mike,

> On Tuesday, 6 August 2013 3:53 PM Mike Looijmans wrote:
>
>On 08/05/2013 07:40 AM, Sipke Vriend wrote:
>>> On Sunday, 4 August 2013 5:25 AM, Michael Rissi wrote:
>>>
>>> Dear all,
>>> Just hooking up on the topic: For the zedboard, I tried out the official
>>> meta-xilinx layer, as well as meta-zynq-milo.
>>> Both worked great. meta-zynq-milo, however, has 2 main features I liked a
>>> lot which are not in meta-xilinx:
>>> - One can easily change the device where the root filesystem is located by
>>> changing the file autorun.scr. This allows to easily switch from rootfs over
>>> nfs  to e.g. the rootfs on the second partition of the sd card.
>>
>> We investigated this and because this includes a significant u-boot
>> patch, we suggest that the relevant content (if not all) should be RFC
>> patched to git at xilinx.com (Cc meta-xilinx at yoctoproject.org).
>> The u-boot-xlnx team can then comment.
>
>Who will be doing so?
>

Likely Michal.

>I've sent two kernel patches to Xilinx myself, and never got so much as
>a receipt confirmation. That wasn't very encouraging.
>
>> If the patch (or derivative) is accepted, then we can cherry pick it
>> into meta-xilinx - that will keep us in line with future u-boot-xlnx
>> 'zynq_common.h', rather than deviating.
>> Because u-boot is as flexible as it is, the meta-xilinx layer does not
>> try to customise the default zynq_common.h as yet.
>>
>>> For
>>> meta-xilinx, this is much harder to change and needed quite some recipe
>>> editing from my side. The default in meta-xilinx is a ram disk as rootfs,
>>> limited to some 12MB.
>>
>> Anyone wanting a large rootfs (and not able to use ramdisk) could use
>> tar.gz rootfs (built by default) and extract it to a second partition on
>> sd card. The default U-boot configuration will fail on the missing
>> ramdisk:
>> At this point the user can update&save the u-boot command to not load
>> from ram and use the *-zynq7-mmcblk0p2.dtb file (currently only zedboard)
>> to tell the kernel to use rootfs in second partition. If the settings are
>> saved in u-boot, this need only be done once.
>> See also related thread:
>> https://lists.yoctoproject.org/pipermail/meta-xilinx/2013-June/000138.html
>
>I fail to see why this is better than "just insert an SD card and it
>will boot from it".
>

It's not better, but is an available option at the moment.

>>> - A very nice feature is also the automatic creation of the BOOT.bin file
>>> using the xilinx bootgen in meta-zynq-milo.
>>>
>>
>> This kind of Xilinx tool integration and more is currently achieved by
>> Xilinx's Petalinux.
>> http://www.wiki.xilinx.com/PetaLinux
>
>It is? How?
>
>I experimented with Petalinux for a few days, but mostly the lack of any
>documentation and howto's made it -for me- harder to master than plain OE.
>

Documentation is available on Xilinx web page.

Regards
Sipke


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