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Setup

  1. If you don't have the repo tool installed, please refer to Build Torizon OS From Source with Yocto Project.
  2. Initialize and sync the repo manifest for Synaptics:
$ mkdir common-torizon; cd common-torizon
$ repo init -u https://git.toradex.com/toradex-manifest.git -b scarthgap-7.x.y -m common-torizon/syn/integration.xml
$ repo sync -j 10

Manifests for Wrynose are still under development

Important

Until an official release of Common Torizon OS, only the integration.xml manifest is suitable for end-users to build. After an official release, users will be able to use the default.xml manifest.

Note that integration.xml is a development manifest used internally and it might contain development features and thus be considered unstable.

Important

Common Torizon OS is only available on branches scarthgap-7.x.y or newer!

Alternatively, you can manually clone all layers one by one. Refer to the section Manual Setup at the end of this document to learn how.

Build Environment

You can use Synaptics Crops container to also build Common Torizon

  The following command must be run inside the common-torizon directory
$ docker run --rm -it --name=syn-crops-common -v $(pwd):/workdir --workdir=/workdir ghcr.io/synaptics-astra/crops:latest

Build

Board MACHINE Status
Luna SL1680 luna-sl1680 Supported
Astra SL1680 sl1680 Supported
  1. Source setup-environment, specifying the machine to build with the MACHINE variable e.g.:
$ MACHINE=sl1680 . setup-environment <build-directory>

If a build directory is not given, the script will create one named build-${DISTRO}, where all build artifacts will be stored. By default DISTRO is automatically set to common-torizon with the Synaptics boards.

  1. Inside the build directory, start the build e.g.:
$ bitbake torizon-docker

All artifacts should be inside <build-directory>/deploy/images/${MACHINE}, including the SYNAIMG folder.

Recovery Mode

Astra SL1680

On the device, press the USB-Boot button, and while holding it down either power on the device or press the RESET button.

Luna SL1680

To the right of the USB-C connector there is a jumper, that's the board USB-Boot jumper. Power off the device on the Power Switch, short this jumper and then power it on again. After the flashing is done, remove the short on that jumper so the device can boot normally.

Flashing eMMC

For flashing, there are two possible ways: use the helper script flash-image.sh or doing the steps manually.

  1. The easiest way is to use the helper script:

    a. After the build is done, get the file called SYNAIMG-flash.tar.gz from the deploy/images/${MACHINE} folder.
    b. Unpack it into a proper folder, using the tar command: tar -xf SYNAIMG-flash.tar.gz.
    c. With the board in recovery mode, execute the script: ./flash-image.sh.

  2. Another option is to do all the steps manually:

    a. For flashing, you'll need the latest release of Synaptics' usb-tool. Please refer to their usb-tool GitHub repository and download the latest astra-update. On Luna SL1680, make sure to check the important note at the bottom of this section.

    b. Unpack its contents somewhere, go into that folder and copy SYNAIMG from the generated artifacts of your build.

    $ cd usb-tool
$ cp -r <build-directory>/deploy/images/${MACHINE}/SYNAIMG SYNAIMG
    • Or make a symlink to it
    $ cd usb-tool
$ ln -s <build-directory>/deploy/images/${MACHINE}/SYNAIMG SYNAIMG

    c. Grab the manifest ID:

    $ cat astra-usbboot-images/sl1680_suboot/manifest.yaml | grep ^id:

    d. Run astra-update

    $ sudo ./bin/linux/x86_64/astra-update -c sl1680 -m 4gb -d lpddr4x -t emmc -i <manifest ID from previous step>

    Or, if you like you could make it in one line using shyaml

    $ pip install shyaml
$ sudo ./bin/linux/x86_64/astra-update -c sl1680 -m 4gb -d lpddr4x -t emmc -i "$(cat astra-usbboot-images/sl1680_suboot/manifest.yaml | shyaml get-value id)"

Important

For Luna SL1680, you'll need to replace the folder astra-usbboot-images with the one provided here. Just rename the current one something else, for instance astra-usbboot-images-sl1680 and add the provided astra-usbboot-images in usb-tool And if you'll need to flash Astra SL1680, you'll need to switch back to the original binaries, so keep that in mind!

Manual Setup

  1. Create the directory structure for the Yocto layers e.g.:
$ mkdir common-torizon; cd common-torizon
  1. Clone the necessary layers to build the Common Torizon image for the Synaptics boards:
$ git clone https://github.com/synaptics-astra/sdk.git -b scarthgap_6.12_<last_release_version> layers

For example:

$ git clone https://github.com/synaptics-astra/sdk.git -b scarthgap_6.12_v2.1.0 layers
  • Download meta-torizon, meta-torizon-bsp, and their dependencies:
$ cd layers
$ git clone https://github.com/torizon/meta-torizon.git -b master
$ git clone https://github.com/torizon/meta-torizon-bsp.git -b master
$ git clone https://github.com/uptane/meta-updater.git -b master
  • Go back to our top folder common-torizon;
  • Create a symlink to our setup-environment:
$ ln -s layers/meta-torizon-bsp/scripts/setup-environment setup-environment