* Problem with exporting variable in bbappend file
@ 2016-08-30 12:30 Gujulan Elango, Hari Prasath (H.)
2016-09-06 18:18 ` Khem Raj
0 siblings, 1 reply; 4+ messages in thread
From: Gujulan Elango, Hari Prasath (H.) @ 2016-08-30 12:30 UTC (permalink / raw)
To: yocto
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Hello all,
We are working on a platform based on Renesas processor. The BSP provided by them has arm-trusted-firmware. Now in order to enable all the 8 cores, they have suggested to add a environment variable in the arm-trusted-firmware_git.bb file in their BSP layer as below.
export PSCI_DISABLE_BIGLITTLE_IN_CA57BOOT="0"
We would prefer to make this change in our custom layer by creating a .bbappend file. We added the change in bbappend file,recompiled it and tested, but couldn't get the expected results. When I do the same change in the .bb file itself in their BSP layer, I am able to see the expected result.
Is it okay to just add the export as mentioned above in the .bbappend file ? Am I missing something else ?
Thanks & Regards,
Hari Prasath
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Problem with exporting variable in bbappend file
2016-08-30 12:30 Problem with exporting variable in bbappend file Gujulan Elango, Hari Prasath (H.)
@ 2016-09-06 18:18 ` Khem Raj
2016-09-12 4:13 ` Gujulan Elango, Hari Prasath (H.)
0 siblings, 1 reply; 4+ messages in thread
From: Khem Raj @ 2016-09-06 18:18 UTC (permalink / raw)
To: Gujulan Elango, Hari Prasath (H.); +Cc: yocto
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> On Aug 30, 2016, at 5:30 AM, Gujulan Elango, Hari Prasath (H.) <hgujulan@visteon.com> wrote:
>
> Hello all,
>
> We are working on a platform based on Renesas processor. The BSP provided by them has arm-trusted-firmware. Now in order to enable all the 8 cores, they have suggested to add a environment variable in the arm-trusted-firmware_git.bb file in their BSP layer as below.
>
> export PSCI_DISABLE_BIGLITTLE_IN_CA57BOOT="0"
>
> We would prefer to make this change in our custom layer by creating a .bbappend file. We added the change in bbappend file,recompiled it and tested, but couldn't get the expected results. When I do the same change in the .bb file itself in their BSP layer, I am able to see the expected result.
>
> Is it okay to just add the export as mentioned above in the .bbappend file ? Am I missing something else ?
ensure that your bbappend is actually applying to the final parsed recipe. You can use bitbake-layers show-appends to ensure that or simply bitbake -e and grep for this change
>
> Thanks & Regards,
> Hari Prasath
> --
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org <mailto:yocto@yoctoproject.org>
> https://lists.yoctoproject.org/listinfo/yocto <https://lists.yoctoproject.org/listinfo/yocto>
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Problem with exporting variable in bbappend file
2016-09-06 18:18 ` Khem Raj
@ 2016-09-12 4:13 ` Gujulan Elango, Hari Prasath (H.)
2016-09-12 7:34 ` Paul Eggleton
0 siblings, 1 reply; 4+ messages in thread
From: Gujulan Elango, Hari Prasath (H.) @ 2016-09-12 4:13 UTC (permalink / raw)
To: Khem Raj; +Cc: yocto
Hi Raj
Thanks for your reply. I tried bitbake-layers show-appends. I could see my bbappend file. But when I tried to grep the environment variable I am trying to set using bitbake -e, I am not able to see any output. Is there any way to confirm that the environment variable is set to the value I am trying to set ?
Regards,
Hari Prasath
From: Khem Raj [mailto:raj.khem@gmail.com]
Sent: Tuesday, September 06, 2016 11:49 PM
To: Gujulan Elango, Hari Prasath (H.)
Cc: yocto@yoctoproject.org
Subject: Re: [yocto] Problem with exporting variable in bbappend file
On Aug 30, 2016, at 5:30 AM, Gujulan Elango, Hari Prasath (H.) <hgujulan@visteon.com> wrote:
Hello all,
We are working on a platform based on Renesas processor. The BSP provided by them has arm-trusted-firmware. Now in order to enable all the 8 cores, they have suggested to add a environment variable in the arm-trusted-firmware_git.bb file in their BSP layer as below.
export PSCI_DISABLE_BIGLITTLE_IN_CA57BOOT="0"
We would prefer to make this change in our custom layer by creating a .bbappend file. We added the change in bbappend file, recompiled it and tested, but couldn't get the expected results. When I do the same change in the .bb file itself in their BSP layer, I am able to see the expected result.
Is it okay to just add the export as mentioned above in the .bbappend file ? Am I missing something else ?
ensure that your bbappend is actually applying to the final parsed recipe. You can use bitbake-layers show-appends to ensure that or simply bitbake -e and grep for this change
Thanks & Regards,
Hari Prasath
--
_______________________________________________
yocto mailing list
yocto@yoctoproject.org
https://lists.yoctoproject.org/listinfo/yocto
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Problem with exporting variable in bbappend file
2016-09-12 4:13 ` Gujulan Elango, Hari Prasath (H.)
@ 2016-09-12 7:34 ` Paul Eggleton
0 siblings, 0 replies; 4+ messages in thread
From: Paul Eggleton @ 2016-09-12 7:34 UTC (permalink / raw)
To: Gujulan Elango, Hari Prasath (H.); +Cc: yocto
A couple of things:
1) If you're not already, use bitbake -e <recipename> and not just bitbake -e
2) I'd also recommend not piping through grep - pipe through "less" instead
and search for the variable with / - this means you can see the history of how
the variable's value got set.
Cheers,
Paul
On Mon, 12 Sep 2016 04:13:09 Gujulan Elango, Hari Prasath wrote:
> Hi Raj
>
> Thanks for your reply. I tried bitbake-layers show-appends. I could see my
> bbappend file. But when I tried to grep the environment variable I am
> trying to set using bitbake -e, I am not able to see any output. Is there
> any way to confirm that the environment variable is set to the value I am
> trying to set ?
>
> Regards,
> Hari Prasath
>
> From: Khem Raj [mailto:raj.khem@gmail.com]
> Sent: Tuesday, September 06, 2016 11:49 PM
> To: Gujulan Elango, Hari Prasath (H.)
> Cc: yocto@yoctoproject.org
> Subject: Re: [yocto] Problem with exporting variable in bbappend file
>
>
> On Aug 30, 2016, at 5:30 AM, Gujulan Elango, Hari Prasath (H.)
> <hgujulan@visteon.com> wrote:
>
> Hello all,
>
> We are working on a platform based on Renesas processor. The BSP provided by
> them has arm-trusted-firmware. Now in order to enable all the 8 cores, they
> have suggested to add a environment variable in the
> arm-trusted-firmware_git.bb file in their BSP layer as below.
>
> export PSCI_DISABLE_BIGLITTLE_IN_CA57BOOT="0"
>
> We would prefer to make this change in our custom layer by creating a
> .bbappend file. We added the change in bbappend file, recompiled it and
> tested, but couldn't get the expected results. When I do the same change in
> the .bb file itself in their BSP layer, I am able to see the expected
> result.
>
> Is it okay to just add the export as mentioned above in the .bbappend file ?
> Am I missing something else ?
>
> ensure that your bbappend is actually applying to the final parsed recipe.
> You can use bitbake-layers show-appends to ensure that or simply bitbake -e
> and grep for this change
>
>
>
> Thanks & Regards,
> Hari Prasath
> --
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
--
Paul Eggleton
Intel Open Source Technology Centre
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-09-12 7:35 UTC | newest]
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-- links below jump to the message on this page --
2016-08-30 12:30 Problem with exporting variable in bbappend file Gujulan Elango, Hari Prasath (H.)
2016-09-06 18:18 ` Khem Raj
2016-09-12 4:13 ` Gujulan Elango, Hari Prasath (H.)
2016-09-12 7:34 ` Paul Eggleton
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