Yocto Qt5 Integration for Wandboard - Kernel Panic

Yocto Qt5 Integration for Wandboard - Kernel Panic

[Jay Cady]

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Hi,

I'm trying to integrate Qt5 with Yocto on the Wandboard Dual (i.MX6).  I've
been following these two tutorials:

http://wiki.wandboard.org/index.php/Getting_started_with_Yocto_on_Wandboard
http://wiki.wandboard.org/index.php/Building_Qt5_using_yocto_on_Wandboard

The problem occurs when I am ready to bitbake the meta-qt5 recipe into the
core-image-minimal.  I add the recommended features to the local.conf and
remove the x11 and wayland components in order to get the eglfs drivers.
 Then I bitbake core-image-minimal, the bitbake succeeds fine.  I then run
a dd command to write the core-image-minimal-wandboard-dual.sdcard to my
sdcard.

Finally, upon inserting the sdcard into my wandboard, I boot it up and view
the output through serial.  The boot fails with a "Kernel panic - not
syncing: No init found.".

Here is the log of the first boot: http://pastebin.com/gr8LpMRU
And here is the log of when the board is reset: http://pastebin.com/eauuw3Q2

Does anyone have any idea why this is happening and how I can fix it?

Thank you!

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Re: Yocto Qt5 Integration for Wandboard - Kernel Panic

[John Weber]

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Re: Yocto Qt5 Integration for Wandboard - Kernel Panic

[Jay Cady]

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Hey John,

Wow, that is really surprising.  I will give that build a try tonight and
see my results.

Do I exclude git by writing the line "DISTRO_FEATURES_remove = "git"" in my
local.conf?

If this solves it, you will be my hero.

Thanks!
Jay


On Tue, Jan 21, 2014 at 4:57 PM, John Weber <rjohnweber@gmail.com> wrote:

>  Hi Jay,
>
>
> On 1/19/14 3:21 PM, Jay Cady wrote:
>
> Hi,
>
>  I'm trying to integrate Qt5 with Yocto on the Wandboard Dual (i.MX6).
>  I've been following these two tutorials:
>
>
> http://wiki.wandboard.org/index.php/Getting_started_with_Yocto_on_Wandboard
>
>  http://wiki.wandboard.org/index.php/Building_Qt5_using_yocto_on_Wandboard
>
>  The problem occurs when I am ready to bitbake the meta-qt5 recipe into
> the core-image-minimal.  I add the recommended features to the local.conf
> and remove the x11 and wayland components in order to get the eglfs
> drivers.  Then I bitbake core-image-minimal, the bitbake succeeds fine.  I
> then run a dd command to write the core-image-minimal-wandboard-dual.sdcard
> to my sdcard.
>
> I was curious so I tried replicating those steps and was able to get it to
> fail on my Wandboard Dual immediately.
>
> There are a LOT of packages added to the image, so I figured that one of
> them was somehow causing the problem.  I started binary searching.  After 9
> iterations of including/excluding packages from the build, I found that GIT
> of all things was causing the kernel panic.  If you exclude git, then you
> get a successful boot.
>
> That is just *weird*.  I don't have the time to figure out why this is,
> but I hope that this helps you.
>
> John
>
>
>  Finally, upon inserting the sdcard into my wandboard, I boot it up and
> view the output through serial.  The boot fails with a "Kernel panic - not
> syncing: No init found.".
>
>  Here is the log of the first boot: http://pastebin.com/gr8LpMRU
> And here is the log of when the board is reset:
> http://pastebin.com/eauuw3Q2
>
>  Does anyone have any idea why this is happening and how I can fix it?
>
>  Thank you!
>
>
> _______________________________________________
> meta-freescale mailing listmeta-freescale@yoctoproject.orghttps://lists.yoctoproject.org/listinfo/meta-freescale
>
>
>
> _______________________________________________
> meta-freescale mailing list
> meta-freescale@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/meta-freescale
>
>

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Re: Yocto Qt5 Integration for Wandboard - Kernel Panic

[Jay Cady]

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All,

John's solution worked marvelously.

The wiki page has been updated for anyone else in my situation.  If anyone
encounters the same error, simply don't include git in the install_appends.

Thanks John!


On Tue, Jan 21, 2014 at 5:06 PM, Jay Cady <jcady92@gmail.com> wrote:

> Hey John,
>
> Wow, that is really surprising.  I will give that build a try tonight and
> see my results.
>
> Do I exclude git by writing the line "DISTRO_FEATURES_remove = "git"" in
> my local.conf?
>
> If this solves it, you will be my hero.
>
> Thanks!
> Jay
>
>
> On Tue, Jan 21, 2014 at 4:57 PM, John Weber <rjohnweber@gmail.com> wrote:
>
>>  Hi Jay,
>>
>>
>> On 1/19/14 3:21 PM, Jay Cady wrote:
>>
>> Hi,
>>
>>  I'm trying to integrate Qt5 with Yocto on the Wandboard Dual (i.MX6).
>>  I've been following these two tutorials:
>>
>>
>> http://wiki.wandboard.org/index.php/Getting_started_with_Yocto_on_Wandboard
>>
>>
>> http://wiki.wandboard.org/index.php/Building_Qt5_using_yocto_on_Wandboard
>>
>>  The problem occurs when I am ready to bitbake the meta-qt5 recipe into
>> the core-image-minimal.  I add the recommended features to the local.conf
>> and remove the x11 and wayland components in order to get the eglfs
>> drivers.  Then I bitbake core-image-minimal, the bitbake succeeds fine.  I
>> then run a dd command to write the core-image-minimal-wandboard-dual.sdcard
>> to my sdcard.
>>
>> I was curious so I tried replicating those steps and was able to get it
>> to fail on my Wandboard Dual immediately.
>>
>> There are a LOT of packages added to the image, so I figured that one of
>> them was somehow causing the problem.  I started binary searching.  After 9
>> iterations of including/excluding packages from the build, I found that GIT
>> of all things was causing the kernel panic.  If you exclude git, then you
>> get a successful boot.
>>
>> That is just *weird*.  I don't have the time to figure out why this is,
>> but I hope that this helps you.
>>
>> John
>>
>>
>>  Finally, upon inserting the sdcard into my wandboard, I boot it up and
>> view the output through serial.  The boot fails with a "Kernel panic - not
>> syncing: No init found.".
>>
>>  Here is the log of the first boot: http://pastebin.com/gr8LpMRU
>> And here is the log of when the board is reset:
>> http://pastebin.com/eauuw3Q2
>>
>>  Does anyone have any idea why this is happening and how I can fix it?
>>
>>  Thank you!
>>
>>
>> _______________________________________________
>> meta-freescale mailing listmeta-freescale@yoctoproject.orghttps://lists.yoctoproject.org/listinfo/meta-freescale
>>
>>
>>
>> _______________________________________________
>> meta-freescale mailing list
>> meta-freescale@yoctoproject.org
>> https://lists.yoctoproject.org/listinfo/meta-freescale
>>
>>
>

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Re: Yocto Qt5 Integration for Wandboard - Kernel Panic

[Otavio Salvador]

On Wed, Jan 22, 2014 at 1:37 PM, Jay Cady <jcady92@gmail.com> wrote:
> All,
>
> John's solution worked marvelously.
>
> The wiki page has been updated for anyone else in my situation.  If anyone
> encounters the same error, simply don't include git in the install_appends.

Oh man, I'd like to understand WHY!

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
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