_arguments -S \
  '-1[only boot once, then exit]' \
  '-a[only boot device with this IPv6 address]:size:' \
  '-b[tftp block size (default=1024, ignored with --netboot)]:size:' \
  '-i[number of microseconds between packets (default=20, ignored with --tftp)]:msecs:' \
  '-n[only boot device with this nodename]:nodename:__fx_nodename' \
  '-w[tftp window size (default=1024, ignored with --netboot)]:size:' \
  '--netboot[use the netboot protocol]' \
  '--tftp[use the tftp protocol (default)]' \
  '--nocolor[disable ANSI color (false)]' \
  '1::kernel:_files' \
  '2::ramdisk:_files'

# TODO: complete kernel args?