Hey, When we're building a full software setup for a certain embedded architecture to completly setup a device, that contains various components which are collected in some "post-rootfs-packaging"
* A rootfs * Kernel * Bootloaders * Firmware * potentially setup components not ending up on the final device state (initramfs for USB bootstrap for example) * tooling for USB/flasher/etc (eg ADB) Those to bootstrap a device (e.g. via USB/flasher/...), something therefore collects the output of various recipes, both images (rootfs) and non-images (bootloader files, firmware, ...) and packages them in a custom way. Often this includs additional tooling, like flashing tools or install scripting. Working with various SoC vendors, I've seen various setups, and I'm not sure if there is any guidance on whats correct * Some vendors have external tooling. This tooling expects the right files in the right place (eg. deploy dir) to bootstrap a device * Some vendors integrate this into yocto, having a custom recipe that depends on recipes and packages the output * Some meta-layers for OTA update do something similar, inherit the image type, but disable most image tasks and don't actually build an "image" (e.g. swupdate) * Some vendors implement custom image types When trying to support multiple SoC/BSP vendors, this sometimes leads to conflicts and questions, but I was unable to find some references to this in the yocto documentation. A custom image type feels most integrated into yocto, but I've seen some "hacks" in there that make me question if this is intended? Is there anything like a reference implementation for "post-rootfs-packaging"? Best regards, Olli
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