BUILDROOT

Buildroot integration

Same bake contract as Yocto. A template for a RAUC image, not a certified board.

Buildroot images that use RAUC follow DEVICE-INTEGRATION.md. This page does not ship a defconfig and does not claim a board.

Rootfs overlay

Build static binaries with make dist, then:

scripts/bake-rootfs-overlay.sh output/target

Run that from a post-build.sh after packages are installed. Install:

• zyvor-otad and zyvor-ota under /usr/local/bin
• packaging/systemd/zyvor-otad.service
• D-Bus and polkit examples only after you review them for your init and policy stack
• /etc/zyvor-ota/agent.json with the board compatible, pinned trust key, and download host allowlist

Keep /var/lib/zyvor-ota on storage that both A/B slots mount. The journal must not live on the rootfs that an update replaces.

Bundle and enroll

Produce rootfs.ext4 and the matching boot image from Buildroot, then rauc bundle as in YOCTO.md. Enroll the device against Fleet or zyvor-fleet-ref using the tutorial. Hardware rows stay unsigned until the checklist in evidence/qualification/hardware-checklist.md is filled on the real board.