grub-kbdcomp ,-o OUTPUT CKBMAP_ARGUMENTS/...
grub-kbdcomp processes a X keyboard layout description in keymaps(5) format into a format that can be used by GRUB's keymap command.
Make GRUB keyboard layout file.
grub-kbdcomp generates a keyboard layout for GRUB using ckbcomp
Report bugs to <firstname.lastname@example.org>.
The full documentation for grub-kbdcomp is maintained as a Texinfo manual. If the info and grub-kbdcomp programs are properly installed at your site, the command
should give you access to the complete manual.