[yocto] kernel.bbclass do_bundle_initramfs did not work

[JH]

Hi,

It seems to me if both INITRAMFS_IMAGE and INITRAMFS_IMAGE_BUNDLE are
set it should generate initramfs, but I did not get. I set up in my
image:

INITRAMFS_IMAGE = "zImage-initramfs"
INITRAMFS_IMAGE_BUNDLE = "1"

But it did not build zImage-initramfs, what I could be missing here?

Thank you.

Kind regards,

- jh