Building Linux kernel (XELK)

Info Box Applies to Axel Ultra Applies to Axel Lite Applies to AXEL ESATTA Applies to SBC AXEL

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	THIS PAGE IS OBSOLETE, DON'T USE IT AS REFERENCE
The new documentation is available here: DESK-MX6-L/Development/Building_Linux_kernel

History

Version	Date	XELK version	Notes
1.0.0	Nov 2013	XELK 1.0.0
1.2.0	May 2014	XELK 1.2.0
2.0.0	Nov 2014	XELK 2.0.0
2.1.0	May 2015	XELK 2.1.0
2.2.0	Feb 2016	XELK 2.2.0
3.0.1	Nov 2017	XELK 3.0.1
4.0.0	Aug 2019	XELK 4.0.0

Quick reference

Repository Information

URL	git@git.dave.eu:axel/u-boot-imx.git
stable branch	axel
stable tag	xelk-4.0.0

Build Information

defconfig	imx_v7_axel_defconfig
Kernel binary	UIMAGE_LOADADDR=0x10008000 uImage
Device trees	Platform	DTB
	SBC-AXEL	imx6q-sbcx-cb0012.dtb (Quad processor) imx6dl-sbcx-cb0012.dtb (DualLite processor)
	EVB	imx6q-xelk-l-2.0.0.dtb (Quad processor) imx6dl-xelk-l.dtb (DualLite processor)

Detailed Instructions

It is assumed that the development environment has been set up.

• start the Linux development VM and login into the system
• open a terminal window and cd into Linux kernel source code

cd axel/linux/

• in case of needs you can update your local repository with the following git command

git pull

• configure the build environment

source ~/env.sh

• to build the binaries run the following commands:

make imx_v7_axel_defconfig
make UIMAGE_LOADADDR=0x10008000 uImage imx6dl-sbcx-cb0012.dtb

The former command selects the default XELK configuration, while the latter builds the kernel binary image with the required u-boot header and the kernel device tree.

Default Linux kernel configuration can be changed by using the standard menuconfig, xconfig, or gconfig make target. Subsequent builds just require uImage make target to update the binary image. Once the build process is complete, the kernel binary image is stored into the arch/arm/boot/uImage file. Both this file and the kernel device tree can be copied to the tftp root directory /tftpboot/axel/ with the following commands:

cp arch/arm/boot/uImage /tftpboot/axel/
cp arch/arm/boot/dts/*.dtb /tftpboot/axel/