[yocto] initramfs image

[Andrea Adami]

On Wed, May 9, 2012 at 8:44 PM, Andrea Adami <andrea.adami at gmail.com> wrote:
> On Wed, May 9, 2012 at 8:18 PM, Darren Hart <dvhart at linux.intel.com> wrote:
>>
>>
>> On 05/08/2012 06:54 PM, Manuel Bessler wrote:
>>> Hi,
>>>
>>> I'm trying to figure out how to build an image of type initramfs, ie.
>>> kernel with built-in rootfs.
>>> I've got a rootfs.cpio.gz in build/tmp/deploy/images. But how do I
>>> tell the kernel to actually use it
>>> and "swallow in" the rootfs.
>>
>> This isn't currently supported. The problem is the kernel would have to
>> wait for the image to be completed, and the image currently waits for
>> the kernel to be completed. In practice, this is often done in two
>> stages, the kernel is built, the rootfs is built, then the kernel is
>> rebuilt. This workflow has not been configured for OE/Yocto yet. If this
>> is an important feature for you, please consider opening a feature request.
>>
>> Regards,
>>
>> Darren Hart
>>
>>>
>>> I've found a few variable that have to do with initramfs', but there
>>> are no simple examples,
>>> and for some variables I've not found any examples nor documentation at all.
>>>
>>> in  .../images/myimage-initramfs.bb I have:
>>> require myimage.bb
>>> INITRAMFS_FSTYPES = "cpio.gz"
>>> IMAGE_FSTYPES = "${INITRAMFS_FSTYPES}"
>>>
>>> In the same file I tried to set INITRAMFS_IMAGE to:
>>> INITRAMFS_IMAGE = "myimage "
>>>
>>>
>>> Do I need to set CONFIG_INITRAMFS_SOURCE in my kernel config manually,
>>> and if yes, to what?
>>> My kernel recipe is (for now) a simple kernel build, ie "inherit
>>> kernel"-based only.
>>>
>>> Am I using INITRAMFS_IMAGE the right way? What about INITRAMFS_TASK ?
>>> I could not find any information on this variable....
>>>
>>> I'm using yocto 1.2.
>>>
>>>
>>> Does anyone have a simple example on how to build a kernel with
>>> initramfs built in?
>>>
>>> I'd appreciate any help.
>>> Thanks,
>>> Manuel
>>> _______________________________________________
>>> yocto mailing list
>>> yocto at yoctoproject.org
>>> https://lists.yoctoproject.org/listinfo/yocto
>>
>> --
>> Darren Hart
>> Intel Open Source Technology Center
>> Yocto Project - Linux Kernel
>> _______________________________________________
>> yocto mailing list
>> yocto at yoctoproject.org
>> https://lists.yoctoproject.org/listinfo/yocto
>
>
> I think I've answered a similar question last week.
>
> Pls. see  this thread:
> https://lists.yoctoproject.org/pipermail/yocto/2012-May/008625.htmlsimilar
> question was answ
>
> Regards
>
> Andrea

Bad copy&paste :/ sry

 https://lists.yoctoproject.org/pipermail/yocto/2012-May/008625.html