Kernel config file used by Yocto

[dhavalvadhar]

Hello,

I able to configure the Ubuntu machine and build the images using Yocto. But now I would like to modify the kernel configuration and build the kernel with that configuration. I read somewhere that Yocto uses the kernel configuration file "<build_dir>/../sources/meta-fsl-arm/recipes-kernel/linux/linux-imx-3.10.17/mx6/defconfig". But the linux kernel version is 3.14.28. Then how come the Yocto build uses the configuration file of linux kernel v3.10.17.

Please help me to understand this.

Appreciate your quick reply.

Thanks,

Dhaval

[BiyongSUN]

ls fsl-release-bsp/sources/meta-fsl-bsp-release/imx/meta-fsl-arm/recipes-kernel/linux/

linux-imx_3.14.28.bb  linux-imx_%.bbappend  linux-imx-mfgtool_3.14.28.bb

[dhavalvadhar]

Thanks Biyong for your quick response!

I ran 'bitbake linux-imx -c menuconfig' command. And thus .bb file of linux kernel version 3.14.28, it will first run the do_configure_prepend() function before starting configuration. So it will copy the 'imx_v7_defconfig' to '.config' and 'defconfig' files.

1. What is the need of copying imx_v7_defconfig to those files?

2. How did the bitbake command use the .bb file of 3.14.28 linux kernel and not of 3.10.17 linux kernel?

[BiyongSUN]

For how to use the yocto, please refer to the yocto official site.

And 3.10.17 and 3.14.28 use the different way to handle the linux config file. It depends on the designer.

In the 3.14.28, it copy the default config file to .config. cheat the linux. it has run the make <default config> already.

you can add you owner recipe for your owner favorite way. 

[dhavalvadhar]

Ok.. Thanks Biyong.