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====== Edge-2L Build Linux Kernel ======

===== Ubuntu =====


We provide [[kg>fenix|Fenix]] for you to build the Ubuntu OS images easily. You can follow the steps below to build Linux Kernel.


==== Setup environment ====

Configure the environment by choosing your ''board'' (e.g., ''Edge-2L''), ''U-Boot version'', ''Linux kernel version'', ''system version'', etc.

```shell
$ source setenv.sh
```

Select the options that match your requirements.

==== Change the Kernel config ====

<WRAP tip >
This is an optional operation.
</WRAP>

Follow these steps to change the default kernel configuration.

```shell
$ make kernel-config
$ make kernel-saveconfig
```

==== Build ====

Build the Linux Debian package.

```shell
$ make kernel
$ make kernel-deb
```

The generated Debian packages are located in the folder ''build/images/debs/{VERSION}/{BOARD}/''.

  * **VERSION** : refers to the Fenix version, e.g. ''1.1.1''
  * **BOARD** : refers to the Khadas SBC, e.g. ''Edge-2L''

For example, the folder location would be ''build/images/debs/1.1.1/Edge-2L/'', and you will need the following three packages: the ''DTB package'', the ''image package'', and the ''header package''.

  * DTB package - ''linux-dtb-rockchip-6.1_1.1.1_arm64.deb''
  * Image package - ''linux-image-rockchip-6.1_1.1.1_arm64.deb''
  * Header package - ''linux-headers-rockchip-6.1_1.1.1_arm64.deb''

==== See also ====

  * [[products:sbc:edge-2l:development:linux:build-linux-uboot|Build U-Boot]].
  * [[products:sbc:edge-2l:development:linux:build-ubuntu|Build Ubuntu]].
  * [[products:sbc:edge-2l:configurations:upgrade-linux-kernel|Upgrade Linux Kernel]]