Yocto Sumo

http://gitlab.keith-koep.com/imx/imx-manifest
http://gitlab.keith-koep.com/imx/meta-fsl-bsp-release

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 http://gitlab.keith-koep.com/imx/imx-manifest.git -b <Branch> -m <Manifest-File>
$ repo sync

$ mkdir imx-yocto-bsp
$ cd imx-yocto-bsp
$ repo init -u http://gitlab.keith-koep.com/imx/imx-manifest.git -b kuk_imx-linux-sumo -m kuk_imx-p9.0.0_2.3.4.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.

$ DISTRO=<Distribution> MACHINE=<Machine> source fsl-setup-release.sh -b <build-dir>

$ DISTRO=fsl-imx-wayland MACHINE=imx8mm_trizeps8mini source fsl-setup-release.sh -b build-wayland

After the setup of the build-environment, you can start to run bitbake to build the image.

$ bitbake <project-image>

After reboot or opening a new terminal window, you can restart the build environment with:

$ source setup-environment <build-dir>

$ source setup-environment ./build-wayland
$ bitbake fsl-image-qt5-validation-imx

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. fsl-image-qt5-validation-imx-imx8mm_trizeps8mini.sdcard.bz2.
The bootloader will be imx-boot-<Machine>-sd.bin-flash_<Module>; i.e. imx-boot-imx8mm_trizeps8mini-sd.bin-flash_trizeps8mini.

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.

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

Put the module into USB Serial Download Mode and run:

$ sudo ./uuu -b emmc_all <bootloader> <image_name>.sdcard

After flashing the image you will need to select the correct device-tree for your device.

This can be done in two ways:
1. 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“.

2. Rename the wished device-tree file (.dtb) to the default fdt_file setting:

(Myon II and Trizeps VIII Mini use the same bootloader )

Yocto-Images uploaded to the wiki can be supplied in different formats.
The current format is a zip-file which contains the images and scripts.

You may use

$ sudo ./uuu <file.zip>

This will use the uuu.auto script-file to deploy the image through USB.

You may also unzip the file and run the deploy script-file.
It will show usage information if run without parameters and can either flash the image through USB or uSD-card.

Previous deployment-packages typical included:

 uuu.auto  A script run by uuu
 xxx.sdcard  SDCard-image
 flash.bin  U-Boot bootloader

View readme.txt. It should instruct to do something like:

• Connect Serial Port 1 (115k2, 8N1) and USB-OTG with PC and enter Serial-Download-Mode
• Run

   $ sudo ./uuu package.zip

• Use 'ctrl-c' to enter bootloader-console and run

  u-boot=> ums 0 mmc 0

• Copy contents of '.\boot' to Boot-FAT-partition of module; i.e.:

  $ cp -r ./boot/* "/media/imx6/Boot imx8mq"/

• Copy contents of '.\root' to Ext4-partition of module; i.e.:

  $ cp -r ./root/* "/media/imx6/2695102b-264f-4b1f-b58b-6bdd5a04db3a"/

• Unmount store and use 'ctrl-c' to re-enter bootloader-console.
• Select device-tree to use; i.e.:

  u-boot=> env set fdt_file kuk-trizeps8-pconxs-edt7.dtb
  u-boot=> env save

• Restart system.