Binary package “mkvmlinuz” in ubuntu trusty
create a kernel to boot a PowerPC machine from Open Firmware
This little program takes a PowerPC Linux kernel as an uncompressed
ELF image file (usually called vmlinux or such) and adds boot code
and possibly a ramdisk to create a compressed kernel image that
can be booted directly from Open Firmware, thus eliminating the
need for a second-stage bootloader such as yaboot or quik. This is
especially useful on PowerPC sub-architectures which do not have a
bootloader at all, but may also come in handy for install kernels,
netboot systems, and the like.