TQMLS1028A - YOCTO Linux BSP documentation

The meta-tq layer extends the Yocto Project's reference system Poky to provide support for a selection of TQ Embedded CPU Modules, including the TQMLS1028A.

It uses the same codebase as the PTXdist based TQ Linux BSPs and therefore provides the same versions of U-Boot and Linux kernel, but doesn't define a specific root filesystem configuration.

Because of the dependencies to the other yocto layers we recommend to use ci-meta-tq which already provides all required yocto layers as git submodules instead of meta-tq to build this BSP release.

The instructions on this page refer to the BSP and ancillary tools listed in the following table:

BSP Revision 0109
meta-tq release kirkstone.TQMLS1028A.BSP.SW.0109
Yocto Project / Poky Release 4.0.11
Target machine1) tqmls1028a-mbls1028a
U-Boot u-boot-2019.10-LSDK-20.04
Linux Kernel lf-5.15.5-1.0.0
The goal of these wiki pages is to get you started using ci-meta-tq with the STKLS1028A, so instead of reinventing the wheel we will adhere to the very compact Yocto Project Quick Build and supply details specific to the STKLS1028A where necessary.

For further details regarding Yocto Project 4.0.11 - Kirkstone please refer to its official documentation.

Build Host

Yocto Project / Poky requires a Linux build host, so first of all you need a development workstation (or a virtual machine2)) with a Linux distribution installed.

Please refer to section Supported Linux Distribution of the Yocto Project Quick Start for supported linux distributions and section Required Packages for the Build Host for required build host packages for those distributions.

The instructions on this page have been tested on Ubuntu 22.04 (64 bit) in a VMWare virtual machine.

Although not required by Yocto Project / Poky, we also recommend to configure and run a tftp server (for image download / update) and an nfs server (for network mounted root filesystem) on your development host.

Yocto BSP

1. Open a new terminal and create a directory for the BSP build e.g. in the home directory and navigate to that directory.

mkdir -p ~/workspace/kirkstone.TQMLS1028A.BSP.SW.0109
cd ~/workspace/kirkstone.TQMLS1028A.BSP.SW.0109

2. Create a local copy of meta-tq

git clone --recurse-submodules https://github.com/tq-systems/ci-meta-tq.git

3. Checkout BSP release on new local branch.

cd ci-meta-tq
git checkout kirkstone.TQMLS1028A.BSP.SW.0109 -b kirkstone-tqmls1028a

4. Update git submodules:

git submodule sync
git submodule update --init

5. Setup local branch to track the remote branch.

git branch -u origin/kirkstone

6. Export the environment DISTRO and MACHINE3) environment variable:

export DISTRO=dumpling-ls
export MACHINE=tqmls1028a-mbls1028a

7. Configure the Build:

source setup-environment tqmls1028a_build ls
Each time a new terminal is opened, the build environment must be reinitialised. The command described above is intended for the initial build space initialisation. To return to an existing buildspace open up a new terminal and navigate to the ci-meta-tq folder and execute the following command:
source setup-environment tqmls1028a_build  

8. Build an Image for STKLS1028A:

Image with debug features/root login

bitbake tq-image-generic-debug

Image without debug features/root login

bitbake tq-image-generic

9. Write the Image6)7)

sudo dd if=tmp/deploy/images/tqmls1028a-mbls1028a/tq-image-generic-tqmls1028a-mbls1028a.wic of=/dev/<TARGET_DEVICE>

10. Boot the STKLS1028A from SD card (cf. tqmls1028a DIP switch settings) |

i.e. value for MACHINE variable
for testing purposes Yocto Project provides a ready to use virtual machine called Build Appliance
valid machines are
valid machines are
valid machines are
valid machines are
TARGET_DEVICE has to be an SD card

  • Last modified: 2023/08/09 14:26