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Compiling the Kernel

Compiling the Kernel​

Armbian was using a default config linux-rockchip-default.config, to be found in $HOME/lib/config/kernel, which should be copied to ................. arch/arm/configs DEFCONFIG=linux-rockchip-default.config DTB=rk3288-miniarm.dtb

make clean does nothing on first compile, as there is nothing to clean. Otherwise it is a good idea to start with this when options are going to be changed.

cd $HOME/sources/linux-rockchip/miqi/release-4.4
make clean
make linux-rockchip-default_defconfig
make menuconfig

At this stage go to section File Systems and make sure overlayfs has been enabled as a module. Then go to Miscellaneous Filesystems and check if squashfs has been enabled as a module (including the various compression options). Then save and exit menuconfig.

When you want to keep the changes permanent: 

cp .config arch/arm/configs/my_tinker-default_defconfig

Or easier if you keep the same name: 

make savedefconfig

Continue compiling the kernel

make -jx                    (For x take 1.5 times the number of cpus you have available)

Save the kernel and dtb's

cp arch/arm/boot/zImage your-platform-file-folder/boot
cp arch/arm/boot/dts/*.dtb your-platform-file-folder/boot/dtb

Save the modules and firmware

Compiling the Kernel​

First we will rename the kernel config to something more logical.
This is normally not necessary, but in this case we started when the original miniarm-rk3288 was not renamed to Tinker Board yet.

cd linux-asus/arch/arm/configs
cp miniarm-rk3288_defconfig tinker-rockchip_defconfig

We will use this renamed default kernel config

Let us build the kernel step by step. Of course 'make clean' does nothing on first compile, as there is nothing to clean. Otherwise it is a good idea to start with this when options are going to be changed. After that we select the kernel config tu use and in this case we also start kernel configuration.

cd $HOME/linux-asus
make clean
make tinker-rockchip_defconfig
make menuconfig

At this stage ensure all minimum options from the previous chapter have been selected. To get a bootable, first volumio image, we need at least overlayfs, squashfs and nls437 as a module.
Then save and exit menuconfig.

When you want to keep the changes permanent: 

cp .config arch/arm/configs/my_tinker-default_defconfig

Or easier if you keep the same name: 

make savedefconfig

Continue compiling the kernel

make -jx                    (For x take 1.5 times the number of cpus you have available)

This does all the work defined in the makefile, including dts compilation