On 2015-06-23 11:27 AM, Chen, Simon wrote:
Hi all,
I am trying to integrate the AMD Radeon E8860 graphics card on to a
Yocto (poky-dizzy-12.0.1) embedded machine. Ialready have the open
source xf86-video-ati driver (7.4.0) installed into my Yocto image. The
problem is that the kernel module radeon.ko, and all of its dependencies
under the GPU and I2C folders seems to be missing from the kernel.
Without these .ko files, Yocto cannot recognize the external graphics
card, and udev cannot generate an appropriate device node
(/dev/dri/card0) for Xorg to use.
I’ve already tried adding the following line to my local.conf:
CORE_IMAGE_EXTRA_INSTALL_append = "kernel-modules"
How are you invoking the rebuild of the kernel modules after you've
added them via menuconfig ?
kernel-modules is a meta package that has embedded RDEPENDS on
individual kernel module packages. If you are rebuilding the kernel,
but not re-building and repacking the kernel modules then any additions
won't be in the RDEPENDS and hence won't make it to the image.
Bruce
This populates the file system with .ko’s but none seem to be the ones I
need for my graphics card to run, which are radeon.ko, drm.ko,
drm_kms_helper.ko, ttm.ko, and i2c_algo_bit.ko. I am missing the entire
lib/modules/<KERNEL_VERSION>/kernel/drivers/gpu folder and also most of
the contents in lib/modules/<KERNEL_VERSION/kernel/drivers/i2c.
I wondered if it was just a matter of implementing the .config file
correctly. But I’ve already executed “$bitbake linux-yocto –c menconfig”
and enabled the appropriate configuration flags for each of these
modules. Perhaps this just a matter of appending to the kernel.bbclass
file which is responsible for executing the kernel Makefiles, and
building these .ko’s?
Can you guys please check your own lib/modules/<KERNEL_VERSION>/kernel
directory to see that these .ko’s exist? I’d like to know if there is
something else that isn’t enabled or included into the build, or if it’s
something I need to hardcode in order to fix this issue.
Thanks,
Simon
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