[yocto] Where to add U-Boot argements bootargs and bootcmd?

[JH]

Hi Gabriele,

Thank you for your kind explanations and links, that's great helpful.
Will dig further to learn more.

Cheers.

- jh

On 7/16/19, Gabriele Zampieri <gabbla.malist at gmail.com> wrote:
> Hi JH,
>
> wks is the extension used by wic to generate different kind of flashable
> (partitioned) images. I never used it, but looking around (
> https://www.yoctoproject.org/docs/latest/ref-manual/ref-manual.html#command-bootloader
> ) I see two relevant arguments:
>
>    - *--append *
>    - *--configfile*
>
> Check them in the link above.
>
> Here is an example for --append:
> https://github.com/openembedded/openembedded-core/blob/master/scripts/lib/wic/canned-wks/directdisk-multi-rootfs.wks#L22
>
> Digging a bit deeper it seems that you cannot feed a custom config to uboot
> via wic (and again, correct me if I'm wrong), but only for extlinux (see:
> https://github.com/openembedded/openembedded-core/blob/master/scripts/lib/wic/plugins/source/bootimg-partition.py#L110
> )
>
> I do not have time to replicate your environment, so I'm just giving you
> suggestions.
>
> Best regards,
> Gabriele
>
> Il giorno lun 15 lug 2019 alle ore 14:45 JH <jupiter.hce at gmail.com> ha
> scritto:
>
>> Thanks Gabriele and Maciej, I use meta-freescale for imx6. The u-boot
>> argements seem defined in wks files such as imx-uboot-mxs.wks,
>> imx-uboot-bootpart.wks, not quite sure how to extend or overwrite it.
>> Sorry still learning the Yocto.
>>
>> Thank you.
>>
>> Kind regards,
>>
>> - jh
>>
>> On 7/15/19, Gabriele Zampieri <gabbla.malist at gmail.com> wrote:
>> > Yes, thanks Maciej for pointing that out! It may be a good starting
>> > point
>> > for JH.
>> >
>> > Gabriele
>> >
>> > Il giorno lun 15 lug 2019 alle ore 10:29 Maciej Pijanowski <
>> > maciej.pijanowski at 3mdeb.com> ha scritto:
>> >
>> >>
>> >> On 15.07.2019 08:45, Gabriele Zampieri wrote:
>> >>
>> >> Hi,
>> >>
>> >> as far as I know, there is no mechanism to add custom bootargs and/or
>> >> bootcmd to uboot via Yocto (correct me if I'm wrong). I usually patch
>> the
>> >> upstream uboot to achieve this task.
>> >>
>> >> I also haven't heard of any standardized way. It may depend on the
>> target
>> >> hardware
>> >> and the BSP layer you are using. Apart from patching the U-Boot, there
>> >> also might
>> >> be boot.cmd script to modify or the config.txt in case of the RPI, for
>> >> example.
>> >>
>> >>
>> >> Best regards,
>> >> Gabriele
>> >>
>> >> Il giorno lun 8 lug 2019 alle ore 22:43 JH <jupiter.hce at gmail.com> ha
>> >> scritto:
>> >>
>> >>> Hi,
>> >>>
>> >>> Which Yocto files and which statement can I add my own U-Boot
>> >>> bootargs
>> >>> and bootcmd?
>> >>>
>> >>> Thank you.
>> >>>
>> >>> - jupiter
>> >>> --
>> >>> _______________________________________________
>> >>> yocto mailing list
>> >>> yocto at yoctoproject.org
>> >>> https://lists.yoctoproject.org/listinfo/yocto
>> >>>
>> >>
>> >> --
>> >> Maciej Pijanowski
>> >> Embedded Systems Engineerhttps://3mdeb.com | @3mdeb_com
>> >>
>> >> --
>> >> _______________________________________________
>> >> yocto mailing list
>> >> yocto at yoctoproject.org
>> >> https://lists.yoctoproject.org/listinfo/yocto
>> >>
>> >
>>
>