UEFI keyboard config

[cervicad]

we use network ipxe config to allow our users to install Ubuntu, Debian on various systems
most of them have azerty keyboard to identify themselves by a request to AD server
no problem in legacy mode, azerty keyboard is ok and splash image also
here are our console.h regarding to documentation http://ipxe.org/buildcfg/keyboard_map
simple$ cat console.h
#define CONSOLE_PCBIOS /* Default BIOS console */
#define CONSOLE_VESAFB /* VESA framebuffer console */
#undef KEYBOARD_MAP
#define KEYBOARD_MAP fr

but actually more and more system are UEFI compliant
despite our fr config in console.h qwerty config remains and slash image cannot load (we have a blue screen instead)
simpleefi$ cat console.h
#define CONSOLE_PCBIOS /* Default BIOS console */
#define CONSOLE_VESAFB /* VESA framebuffer console */
#undef KEYBOARD_MAP
#define KEYBOARD_MAP fr

any ideas.......