Files required for mkboot:
- cmdline - cmdline for Linux kernel or Multiboot image
- bootstub - SFI-Bootstub binary.
- font - 8x16 binary font (that one was tested), required for framebuffer logging to work in SFI-Bootstub.
- kernel - Linux kernel image or Multiboot 1 specification compliant image.
- ramdisk - Initial ramdisk image.