Three things:
[1] The initramfs is NOT the initrd (te second one is the temp
stage in booting the linux to mmcblk...);
[2] There are some config parameters you need to set up in
your kernel .config file:
https://github.com/ZoranStojsavljevic/bbb-yocto/blob/master/custom/config-in
I'm trying to generate an initramfs for a raspberry pi 3 for a sumo build. We
are based off of the Qt boot2qt system.
I have followed the instructions in the meta-raspberrypi.pdf documentation,
section 3.14 Image with Initramfs.
I edited the meta-raspberrypi/recipes-kernel/linux/linux-raspberry