Device firmware

Device firmware are binary blobs containing code that are executed by device hardware. The binary blob is available in the driver's namespace for loading.

Device firmware are stored in CIPD (Chrome Infrastructure Package Deployment) and mirrored in Google Storage.

Create a Firmware Package

To create a firmware package, create a directory containing the following files:

• One or more firmware files
• A license file
• README.fuchsia

README.fuchsia must contain at least the following directives:

• Name
• Version
• Upstream Git
• License
• License File

If this is the first time you uploaded to CIPD from the host system, authenticate with CIPD:

fx cipd auth-login

Upload and tag the package in CIPD using the following command:

fx cipd create -in <package-directory> -install-mode copy \
    -name <package-name> \
    -tag git_repository:<source-git-repositry> \
    -tag git_revision:<source-git-revision>

package-name has the format fuchsia/firmware/<name>.

<name> should be a string that identifies the firmware. It may contain any non-whitespace character. It is helpful to identify the driver that will use the firmware in the name.

After this step, the package is uploaded to CIPD. Check the CIPD browser here for packages under fuchsia/firmware.

Adding the Firmware Package to the Build

This must be done in the integration.git repository. See the firmware file in the open-source repository for examples.