How to use *.bb file to select different kernel config/feature?

How to use *.bb file to select different kernel config/feature?

[Richard Zhang]

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Hi all


I want   to use one linux-kernel-myown.bb file to select different config for several boxes.

I think when I give MACHINE to box1\box2\box3, the kernel config and features select can be done.


Is it correct :


when use MACHINE=box1\box2\box3 and so on:


KERNEL_FEATURES_append_box1=" cfg/box1.scc"

KERNEL_CONFIG_box1=" cfg/box1_defconfig.cfg"


this instruction could work?or any suggestion.



Regards

Richard

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Re: How to use *.bb file to select different kernel config/feature?

[Bruce Ashfield]

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On Tue, Mar 21, 2017 at 3:15 AM, Richard Zhang <richard.zhang@pica8.com>
wrote:

> Hi all
>
>
> I want   to use one linux-kernel-myown.bb file to select different config
> for several boxes.
>
> I think when I give MACHINE to box1\box2\box3, the kernel config and
> features select can be done.
>
>
> Is it correct :
>
>
> when use MACHINE=box1\box2\box3 and so on:
>
>
> KERNEL_FEATURES_append_box1=" cfg/box1.scc"
>

These are variables like any other in bitbake. They can take a variety of
overrides, one of which is the machine
name. So yes, you could append a kernel feature only for your $MACHINE with
the line above.

But you must be using a kernel recipe that inherits kernel-yocto for the
feature to be processed.

> KERNEL_CONFIG_box1=" cfg/box1_defconfig.cfg"
>

Assuming KERNEL_CONFIG is a valid variable in your layers, this would also
work. But if you are using
configuration fragments and kernel-yocto, that isn't a variable that is
used.

Bruce


>
>
> this instruction could work?or any suggestion.
>
>
>
> Regards
>
> Richard
>
> --
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
>
>


-- 
"Thou shalt not follow the NULL pointer, for chaos and madness await thee
at its end"

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Re: How to use *.bb file to select different kernel config/feature?

[Richard Zhang]

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So, maybe I should take a KERNEL_CONFIG into my own kernel recipe.


Thanks


Richard

________________________________
From: Bruce Ashfield <bruce.ashfield@gmail.com>
Sent: Tuesday, March 21, 2017 8:33:09 PM
To: Richard Zhang
Cc: yocto@yoctoproject.org
Subject: Re: [yocto] How to use *.bb file to select different kernel config/feature?



On Tue, Mar 21, 2017 at 3:15 AM, Richard Zhang <richard.zhang@pica8.com<mailto:richard.zhang@pica8.com>> wrote:

Hi all


I want   to use one linux-kernel-myown.bb<http://linux-kernel-myown.bb> file to select different config for several boxes.

I think when I give MACHINE to box1\box2\box3, the kernel config and features select can be done.


Is it correct :


when use MACHINE=box1\box2\box3 and so on:


KERNEL_FEATURES_append_box1=" cfg/box1.scc"

These are variables like any other in bitbake. They can take a variety of overrides, one of which is the machine
name. So yes, you could append a kernel feature only for your $MACHINE with the line above.

But you must be using a kernel recipe that inherits kernel-yocto for the feature to be processed.

KERNEL_CONFIG_box1=" cfg/box1_defconfig.cfg"

Assuming KERNEL_CONFIG is a valid variable in your layers, this would also work. But if you are using
configuration fragments and kernel-yocto, that isn't a variable that is used.

Bruce




this instruction could work?or any suggestion.



Regards

Richard

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https://lists.yoctoproject.org/listinfo/yocto




--
"Thou shalt not follow the NULL pointer, for chaos and madness await thee at its end"

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