topic Re: How to re-configure kernel for imx devices in i.MX Processors

How to re-configure kernel for imx devices

vivekraj — Tue, 28 Apr 2015 12:46:50 GMT

hi,

I'm trying to build the image with PCIe USB3 and usb wlan (rtl8188) support.

I followed the steps mentioned in the Task #5 - Kernel.

But after :

bitbake linux-imx -c menuconfig

if i try this line -- cp tmp/work/imx6qsabresd-poky-linux-gnueabi/linux-imx/3.14.28-r0/git/.config ../sources/meta-fsl-arm/recipes-kernel/linux/linux-imx-3.14.28/mx6/defconfig

the error is -- cp: cannot stat ‘tmp/work/imx6qsabresd-poky-linux-gnueabi/linux-imx/3.14.28-r0/git/.config’: No such file or directory

please tell me after kernel config, where the latest .config or defconfig deployed. how to build linus kernel with changed defconfig????

[update]:

today i just tried with fsl-release-bsp packages kernel v3.10.17. i could see .config file here after menuconfig but not in fsl-community-bsp kernel v3.14.28. the build boots fine if i'm not doing menuconfig in both package, but if do the menuconfig and try to boot them it does not simply work... halts at starting kernel.....

Re: How to re-configure kernel for imx devices

madisox — Wed, 29 Apr 2015 22:38:13 GMT

With the latest Yocto tools used with the 3.14.28 kernel, the kernel build happens outside the source tree, so instead of

tmp/work/imx6qsabresd-poky-linux-gnueabi/linux-imx/3.14.28-r0/git/.config

you should find the generated config in

tmp/work/imx6qsabresd-poky-linux-gnueabi/linux-imx/3.14.28-r0/build/.config

Re: How to re-configure kernel for imx devices

gusarambula — Fri, 01 May 2015 19:16:26 GMT

Thanks for the help, Masidox! I'm sure it will help other community users as well!

Vivek, would you please confirm if this answered your quesion?

Re: How to re-configure kernel for imx devices

vivekraj — Sat, 02 May 2015 10:04:54 GMT

Thank you very much madisox, i found it..

Re: How to re-configure kernel for imx devices

taruntejkanakam — Tue, 08 Mar 2016 06:29:00 GMT

Hi,

I am using 3.14.38-r0 for an iMX6UL and I am not able to find the .config anywhere in the build folder after "bitbake linux-imx -c menuconfig"

Has something else changed in the kernel build directory from 3.14.28-r0 to 3.14.38-r0?

Could please help me get the location where the .config was supposed to be saved?

Thanks,

Tarun