[yocto] [meta-raspberrypi] how to customize kernel config?

[Jens Lucius]

Hi

Had the same problem. The problem is in file linux-raspberrpi.inc the 
following line:

install -m 0644 ${S}/arch/${ARCH}/configs/${KERNEL_DEFCONFIG} 
${WORKDIR}/defconfig || die "No default configuration for ${MACHINE} / 
${KERNEL_DEFCONFIG} available."

it installs always the defconfig at the path above. I changed that and 
it works.

Am 12.06.2014 08:48, schrieb Jonatan Magnusson:
> Hi
>
> I’m trying to use the meta-raspberrypi BSP with Yocto (1.6, Daisy).
>
> It works great, except I have no idea how to use a custom kernel config!
>
> I have a custom kernel recipe that bbappends to the meta-raspberrypi kernel recipe.
>
> I’ve tried using defconfig as well as configuration fragments, but neither work.
>
> I’ve also tried using the kernel_configure_variable function, and that almost works, except if I try to disable an option that is enabled earlier in the the config file, the option is still enabled since kernel_configure_variable only appends to the config file.
>
> Example:
>
> do_configure_append() {
>    kernel_configure_variable SPI_SPIDEV n
> }
>
> So I wonder: how is this supposed to work?
>
> In my case I need to enable CONFIG_IEEE802154_MRF24J40 and it’s dependencies and disable CONFIG_SPI_SPIDEV and a few more.
>
> I’ve found no help on IRC and all Google comes up with is this old discussion, which does not lead to a solution:
>
> https://lists.yoctoproject.org/pipermail/yocto/2013-November/017113.html
>
> I would be very happy to get any hints on how this is supposed to work!
>
> Regards,
> Jonatan Magnusson