[yocto] initramfs image

[Manuel Bessler]

Hi Andrea,

thanks for the link, I will try that out.

Manuel

On Wed, May 9, 2012 at 2:45 PM, Andrea Adami <andrea.adami at gmail.com> wrote:
> 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