We do not have a Keith&Koep specific Zeus Yocto recipe.
In short, we describe how to build the generic NXP Yocto recipe and patch this with Seco U-Boot and Linux 5.4, Trizeps VIII (-/Mini/Nano)-Kernel.
Yocto Images
Date | Description | Download |
|---|---|---|
13.04.2021 | Yocto Zeus with 5.4 kernel. | myon2-ipanm7-yocto_zeus-20210413.imz, |
Yocto Project Setup
This is only a quick-reference on how to setup and build a Yocto image.
For details please view the Linux and NXP i.MX8M documentation. Especially the „i.MX_Yocto_Project_User's_Guide“.
$ mkdir <project-dir> $ cd <project-dir> $ repo init -u https://source.codeaurora.org/external/imx/imx-manifest -b <Branch> -m <Manifest-File> $ repo sync
Example
$ mkdir imx-yocto-bsp $ cd imx-yocto-bsp $ repo init -u https://source.codeaurora.org/external/imx/imx-manifest -b imx-linux-zeus -m imx-5.4.24-2.1.0.xml $ repo sync
When this process is completed, the source code is checked out into the directory imx-yocto-bsp/sources.
You can perform repo synchronization, with the command repo sync, periodically to update to the latest code.
Distribution | Remarks |
|---|---|
fsl-imx-wayland | Wayland weston graphics. |
fsl-imx-xwayland | Wayland graphics and X11. X11 applications using EGL are not supported. |
fsl-imx-fb | Frame Buffer graphics - no X11 or Wayland. Frame Buffer is not supported on i.MX 8. |
Machine | Remarks |
|---|---|
imx8mmevk | NXP i.MX 8M Mini Eval-Kit. Use for Trizeps VIII Mini, Myon II, SBCSOM |
$ DISTRO=<Distribution> MACHINE=<Machine> source fsl-setup-release.sh -b <build-dir>
Example
$ DISTRO=fsl-imx-wayland MACHINE=imx8mmevk source fsl-setup-release.sh -b build-wayland
Image Build
After the setup of the build-environment, you can start to run bitbake to build the image.
$ bitbake <project-image>
Project-Image | Target | Provided by layer |
|---|---|---|
core-image-minimal | A small image that only allows a device to boot. | Poky |
core-image-base | A console-only image that fully supports the target device hardware. | Poky |
core-image-sato | An image with Sato, a mobile environment and visual style for mobile devices. The image supports a Sato theme and uses Pimlico applications. It contains a terminal, an editor and a file manager. | Poky |
imx-image-core | An i.MX image with i.MX test applications to be used for Wayland backends. This image is used by our daily core testing. | meta-imx/meta-sdk |
fsl-image-machine-test | An FSL Community i.MX core image with console environment - no GUI interface. | meta-freescale-distro |
imx-image-multimedia | Builds an i.MX image with a GUI without any Qt content. | meta-imx/meta-sdk |
imx-image-full | Builds an opensource Qt 5 image with Machine Learning features. These images are only supported for i.MX SoCwith hardware graphics. They are not supported on the i.MX 6UltraLite, i.MX 6UltraLiteLite, i.MX 6SLL, and i.MX 7Dual. | meta-imx/meta-sdk |
After reboot or opening a new terminal window, you can restart the build environment with:
$ source setup-environment <build-dir>
Example
$ source setup-environment ./build-wayland $ bitbake imx-image-multimedia
After a build is complete, the image can be found at <build-dir>/tmp/deploy/images.
The image_name will be <Project-Image>-<Machine>.sdcard.bz2; i.e. imx-image-multimedia-imx8mmevk.sdcard.bz2.
Deploy Image
How to deploy the image depends on wether you have a module with eMMC oder uSD-card-slot.
For a module with eMMC you will use the NXP Universal Update Utility (UUU) to update the files while the module is in USB Serial Download Mode.
For a module with uSD-Slot you can either use NXP Universal Update Utility (UUU) or deploy the image directly to the uSD-card using an uSD-card-reader with your PC.
Flash Image to SD card
Identify the uSD-card plugged to your PC; i.e. by using „lsblk | grep disk“
$ bunzip2 -dk -f <image_name>.sdcard.bz2 $ sudo dd if=<image_name>.sdcard of=/dev/sd<disk> bs=1M conv=fsync
Flash Image to eMMC
Put the module into USB Serial Download Mode and run:
$ sudo ./uuu -b emmc_all <bootloader> <image_name>.sdcard
Patch Image with Seco Linux Bootloader and Kernel
Bootloader
Linux-Kernel
Linux 5.4, Trizeps VIII (-/Mini/Nano)
Select Device-Tree
After flashing the image you will need to select the correct device-tree for your device.
This can be done in two ways:
Through the bootloader-console (115k2, 8N1):
u-boot=> env set fdt_file kuk-trizeps8mini-pconxs-edt7.dtb u-boot=> env save
You can get a list of installed *.dtb files by calling „fatls mmc 0“.
Rename the wished device-tree file (.dtb) to the default fdt_file setting:
Module | Default fdt_file setting |
|---|---|
Trizeps VIII | kuk-trizeps8.dtb |
Trizeps VIII Mini | kuk-trizeps8mini.dtb |
Myon II | kuk-trizeps8mini.dtb |
(Myon II and Trizeps VIII Mini use the same bootloader )