[yocto] custom linux kernel recipe

[Bruce Ashfield]

On 2016-09-05 6:06 AM, Mircea Gliga wrote:
> Thanks Bruce for your help!
>
> It works now, with the defconfig from 4.8.

Great news!

Bruce

>
> Have a nice day !
> Mircea
>
> On 09/02/2016 06:26 PM, Bruce Ashfield wrote:
>> On 2016-09-02 09:58 AM, Bruce Ashfield wrote:
>>> On 2016-09-02 03:51 AM, Mircea Gliga wrote:
>>>> Hi Bruce,
>>>>
>>>> Do you have any new input in regards with qemuarm booting with kernel
>>>> 4.7.2 LTS ?
>>>> Have you managed to test this ?
>>>> I wander if this can be reproduce elsewhere and what's the solution
>>>> for it.
>>>
>>> I was tied up with the introduction of the 4.8 kernel, but I *think*
>>> the coast is clear on that front (for the moment).
>>>
>>> I can try and spin up a korg based 4.7.x build and see how it goes.
>>
>> The issue is in your defconfig.
>>
>> qemuarm login: root
>> root at qemuarm:~# uname -a
>> Linux qemuarm 4.7.2-yocto-standard #1 PREEMPT Fri Sep 2 11:15:30 EDT
>> 2016 armv5tejl GNU/Linux
>> root at qemuarm:~#
>>
>> I created a similar recipe:
>>
>> --------
>> inherit kernel
>>
>> require recipes-kernel/linux/linux-yocto.inc
>>
>> FILESEXTRAPATHS_prepend := "${THISDIR}/linux-stable:"
>>
>> KBRANCH ?= "linux-4.7.y"
>>
>> SRCREV ?= "84fae3f89282ce86a0c0da30e35fe66dbcadda6f"
>>
>> KBRANCH ?= "linux-4.7.y"
>> SRCREV_machine_qemuarm ?= "84fae3f89282ce86a0c0da30e35fe66dbcadda6f"
>>
>> KERNEL_DEVICETREE_qemuarm = "versatile-pb.dtb"
>>
>> KBRANCH_qemuarm ?= "linux-4.7.y"
>>
>> SRC_URI =
>> "git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git;bareclone=1;branch=${KBRANCH}"
>>
>>
>> SRC_URI += "file://defconfig"
>>
>> LINUX_VERSION = "4.7.2"
>> PV = "${LINUX_VERSION}+git${SRCPV}"
>>
>> COMPATIBLE_MACHINE = "qemuarm"
>>
>> ----------
>>
>> And I took the "defconfig" from the -stable tree (the
>> defconfig_versatile).
>>
>> When I built and booted that, I had no output.
>>
>> So I grabbed the .config from my 4.8 build, copied it into my layer
>> as the 'defconfig', rebuilt .. and was able to log in with the prompt
>> you see above.
>>
>> So the 4.7 defconfig is missing something, I didn't iterate to find
>> it.
>>
>> Cheers,
>>
>> Bruce
>>
>>
>>>
>>> Bruce
>>>
>>>>
>>>> Thanks
>>>> Mircea
>>>>
>>>> On 08/30/2016 06:09 PM, Bruce Ashfield wrote:
>>>>>
>>>>> I'm finishing up 4.8 today, but without doing a boot test, I can't say
>>>>> for sure. I'll see if I can cycle in some korg 4.7.x testing
>>>>> tomorrow to
>>>>> see if I can get a clean boot.
>>>>
>>>
>>
>