cd-boot-images-arm64 20 (armhf binary) in ubuntu mantic

 architecture specific boot images (both signed and unsigned) are
 assembled here to be used by debian-cd and ubuntu-image.
 .
 Trees of booloader components are profided together with a sample
 xorriso command to use.
 .
 In addition to the provided files, grub.cfg has to be provided by
 consumer of these products.
 .
 This package must be rebuild whenever Built-Using declared packages
 are updated - namely grub2-signed and shim-signed.