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Swupdate for NVIDIA Tegra (Jetson) platforms

This dynamic layer provides an example implementation for Nvidia Jetson and swupdate.

The simplest way to use on tegra is to add to a forked copy of tegra-demo-distro which also contains relevant images and submodules used to build tegra images. However, this is not strictly required. The only dependency required is the meta-tegra layer.

Build with KAS

The files under conf/kas support building with the kas.

The setups here represent the last configuration tested.

Install kas

pip3 install kas

Build with kas

Use the scripts at scripts, for instance

./scripts/build-jetson-orin-nano-devkit-nvme.sh

to build for the jetson-orin-nano-devkit-nvme MACHINE on the default branch configuration.

The default build will build for whatever branch of this repository you've cloned and latest branch of corresponding repositories.

To build the latest tested configuration instead, use kas build to specify the swupdate-oe4t-lasttested.yml file from the base directory, for instance:

kas build layers/meta-tegrademo/dynamic-layers/meta-swupdate/conf/kas/swupdate-oe4t-lasttested.yml

You may need to modify the machine setting or set KAS_MACHINE appropriately.

Build with tegra-demo-distro

Use these instructions to add to tegra-demo-distro on whatever branch you'd like to target (kirkstone and later are supported).

cd repos
git submodule add https://github.com/sbabic/meta-swupdate
cd ../layers
ln -s ../repos/meta-swupdate

Then use the setup-env script to start a bitbake shell, and add this layer to your build

bitbake-layers add-layer ../layers/meta-swupdate

In your local.conf (or distro/machine configuration) add these lines:

IMAGE_INSTALL:append = " swupdate"
USE_REDUNDANT_FLASH_LAYOUT = "1"
IMAGE_FSTYPES:append = " tar.gz"

If you desire an image other than demo-image-base as your base image, you may add a definition for SWUPDATE_CORE_IMAGE_NAME with the desired base image.

Finally, build the update image using:

bitbake swupdate-image-tegra

Deploy and Test

  • Tegraflash the inital image (demo-image-base or, whatever image you've set as SWUPDATE_CORE_IMAGE_NAME
  • Deploy the .swu file built with swupdate-image-tegra to the target
  • Run the update with:
swupdate -i </path/to/swu/file>
  • Reboot to apply the update.
    • The root partition should change
    • The nvbootctrl dump-slots-info output should show boot from the alternate boot slot with Capsule update status:1.