Embedded module TQMa6ulx - 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 TQMa6ULx.

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	0117
meta-tq release all releases	kirkstone.TQMa6UL.BSP.SW.0117
Yocto Project / Poky Release	4.0.5
Target machine¹⁾	tqma6ulx-mba6ulx TQMa6ulx with 256MB RAM on MBa6ULx \ tqma6ulx-512mb-mba6ulx TQMa6ULx with 512MB RAM on MBa6ULx \ tqma6ullx-mba6ulx TQMa6ULLx on MBa6ULx \ tqma6ullx-512mb-mba6ulx TQMa6ULLx with 512MB RAM on MBa6ULx
U-Boot	2016.03 NXP imx-rel_imx_4.1.15_2.0.0_ga
Linux Kernel	5.15.55 Linux Mainline

It's strongly recommended to use git for downloading both the Yocto Project / Poky Release as well as ci-meta-tq (instead of downloading archives and extracting them)

The goal of these wiki pages is to get you started using ci-meta-tq with the STKa6ULx, so instead of reinventing the wheel we will adhere to the very compact Yocto Project Quick Build and supply details specific to the STKa6ULx where necessary.

For further details regarding Yocto Project 4.0.5 - 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 20.04 (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 Hardknott BSP

Please setup the build host as described in the Prerequisites section above .

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.TQMa6UL.BSP.SW.0117
cd ~/workspace/kirkstone.TQMa6UL.BSP.SW.0117

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.TQMa6UL.BSP.SW.0117 -b kirkstone-tqma6ulx

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. Configure and the Build for a specific Linux ³⁾:

Configuration for Linux mainline kernel

export DISTRO=dumpling-wayland
export MACHINE=tqma6ulx-mba6ulx
source setup-environment tqma6ulx_build mainline

Configuration for Linux RT kernel

export DISTRO=dumpling
export MACHINE=tqma6ulx-mba6ulx
source setup-environment tqma6ulx_build mainline
echo 'PREFERRED_PROVIDER_virtual/kernel = "linux-rt-tq"' >> conf/local.conf

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 tqma6ulx_build

7. Build an Image for STKa6ULx:

Linux mainline kernel

Image with debug features/root login

bitbake tq-image-weston-debug

Image without debug features/root login

bitbake tq-image-weston

Linux RT kernel

Image with debug features/root login

bitbake tq-image-generic-debug

Image without debug features/root login

bitbake tq-image-generic

The resulting image is tmp/deploy/images/tqma6ulx-mba6ulx⁴⁾/tq-image-weston-tqma6ulx-mba6ulx⁵⁾.wic

9. Write the Image⁶⁾⁷⁾

sudo dd if=tmp/deploy/images/tqma6ulx-mba6ulx/tq-image-weston-tqma6ulx-mba6ulx.wic of=/dev/<TARGET_DEVICE>

Please see Create SD Card with BSP Image for detailed instructions.

10. Boot the STKa6ULx from SD card (cf. MBa6ULx DIP switch settings) |

¹⁾

i.e. value for MACHINE variable

²⁾

for testing purposes Yocto Project provides a ready to use virtual machine called Build Appliance

³⁾

valid machines are
tqma6ulx-mba6ulx \
tqma6ulx-512mb-mba6ulx \
tqma6ullx-mba6ulx \
tqma6ullx-512mb-mba6ulx

⁴⁾

valid machines are
tqma6ulx-mba6ulx \
tqma6ulx-512mb-mba6ulx \
tqma6ullx-mba6ulx \
tqma6ullx-512mb-mba6ulx

⁵⁾

valid machines are
tqma6ulx-mba6ulx \
tqma6ulx-512mb-mba6ulx \
tqma6ullx-mba6ulx \
tqma6ullx-512mb-mba6ulx

⁶⁾

valid machines are
tqma6ulx-mba6ulx \
tqma6ulx-512mb-mba6ulx \
tqma6ullx-mba6ulx \
tqma6ullx-512mb-mba6ulx

⁷⁾

TARGET_DEVICE has to be an SD card

Embedded module TQMa6ulx - YOCTO Linux BSP documentation

Preface

Prerequisites

Build Host

Yocto BSP Build Instructions

Yocto Hardknott BSP

Linux mainline kernel

Image with debug features/root login

Image without debug features/root login

Linux RT kernel

Image with debug features/root login

Image without debug features/root login