ThingsCore-1 Yocto meta-st Layer

In this repository, the yocto layer for the DreamXLabs ThingsCore-1 SOM is shared. It is based on the official OpenSTLinux BSP provided by STMicroelectronics and it extends functionality of the image-core-minimal recipe.

Details

The meta-st-thingcore layer generates the fip.bin file implementing the TF-A->OPTEE->TF-A->UBoot->Linux boot chain by using the device tree sources under /mx and building the patched sources by ST. Also, Uboot and Linux kernel recipes are added and used to modify sources using artifact files.

Two are the main recipies:

• thingscore-image-full: package-rich file system used to be installed on the eMMC rootFSA/B partition
• thingscore-image-recovery: compressed root file system for initramfs kernel installed on NAND flassh with minimal packages and linux tools to recover the main eMMC root file system partition.

Packages also include file system overlay recipes that install the necessary kernel modules and firmware/config files for the WF200 tranceiver.

The end-user is free to modify and add the necessary packages for the end-application.

Package list:

python3 python3-pip htop nano i2c-tools wireguard-tools iw wpa-supplicant 
iproute2 curl wget gzip tar util-linux-lsblk util-linux-blkid parted 
util-linux-fdisk e2fsprogs openssh 

Cloning repositories

mkdir yocto
cd yocto
git clone https://github.com/patsaoglou/meta-st-thingcore.git
./git-repo/repo init -u https://github.com/STMicroelectronics/oe-manifest.git -b refs/tags/openstlinux-6.1-yocto-mickledore-mpu-v24.06.26
./git-repo/repo sync

Set environment

MACHINE=thingscore-1-mx DISTRO=openstlinux-weston source layers/meta-st/scripts/envsetup.sh

Build ThingCore full image

bitbake thingscore-image-full

Build ThingCore recovery image

bitbake thingscore-image-recovery

TODOs

• Add complete image generation for NAND and eMMC, structrured for OTA
• Secure images and secure boot