Linux 5.4, Trizeps VII

Gitlab Access:

How to Build Linux Kernel for Trizeps VII

This is only a quick-reference on how to build a Linux Kernel including the Seco specific changes.
For details please view the Linux and NXP i.MX6 documentation.

Get the Linux source code from the git repository:

$ mkdir linux-imx
$ git clone http://gitlab.keith-koep.com/imx/linux-imx.git -b kuk_5.4_t7

Setup Cross-Build environment (View Software-Development-Kit on how to install.):

$ source /opt/fsl-imx-fb/5.4-zeus/environment-setup-cortexa9t2hf-neon-poky-linux-gnueabi

Build Linux Kernel from source code:

~/linux-imx$ make trizeps7_defconfig
~/linux-imx$ make -j$(nproc)

This will generate the linux kernel ('zImage') and device-tree binary ('*.dtb') files.

~/linux-imx/arch/arm/boot/zImage
~/linux-imx/arch/arm/boot/dts/pConXS-t7dl-v1r3.dtb

After you generated the kernel you might want to build the kernel modules:

~/linux-imx$ make modules_install INSTALL_MOD_PATH=MODULES

Update Kernel

Updating the kernel involves copying the 'zImage' and the contents of the MODULES directory to the device.

Update µSD-Card

Mount the µSD-Card and copy the kernel zImage and the device tree in the partition containing the linux file system:

$ lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0   200G  0 disk 
└─sda1   8:1    0   200G  0 part /
sdb      8:16   1   3,8G  0 disk 
├─sdb1   8:17   1   3,7G  0 part /media/imx6/linux_roofs
└─sdb2   8:18   1    16M  0 part 
sr0     11:0    1  1024M  0 rom  

sudo cp ~/linux-imx/arch/arm/boot/zImage /media/imx6/linux_roofs/zImage
sudo cp ~/linux-imx/arch/arm/boot/dts/pConXS-t7dl-v1r3.dtb /media/imx6/linux_roofs/oftree.dtb

Copy the kernel-modules-directory to /lib/modules/ in the linux file system.

sudo cp -pr ~/linux-imx/MODULES/lib/modules/5.4.24* /media/imx6/linux_roofs/lib/modules/

An Ubuntu 18.04 Image with the 5.4.24 Linux Kernel and the 2020.07 U-Boot for Trizeps7 is available here: tr7-5_4_24-pconxs-edt7-debian-lxde-18.04-2021-07-12.imz
Use the 'restore' function of the usb_image_tool.zip to copy it to an sd card.