These is just some stuff I use when I want to try stuff without having to deal with Yocto
./init.shto download lk2nd and kernelmake abootto make lk2ndmake kernel_defconfig || kernel_menuconfig || kernel_buildto make the kernel defconfig/buildmake MACHINE=mdm9640 ...to select mdm9640 as a target (use at your own risk...)
NOTE: If building a mainline kernel, make sure you still keep
qcom,msm-id = <290 0x10000>, <296 0x10000>, <297 0x10000>,
<298 0x10000>, <299 0x10000>;
qcom,board-id = <8 0>;
in the DTS so dtbtool can build the dtb correctly and LK finds it