path: root/Documentation/fb/efifb.rst

==============
What is efifb?
==============

This is a generic EFI platform driver for Intel based Apple computers.
efifb is only for EFI booted Intel Macs.

Supported Hardware
==================

- iMac 17"/20"
- Macbook
- Macbook Pro 15"/17"
- MacMini

How to use it?
==============

efifb does not have any kind of autodetection of your machine.
You have to add the following kernel parameters in your elilo.conf::

	Macbook :
		video=efifb:macbook
	MacMini :
		video=efifb:mini
	Macbook Pro 15", iMac 17" :
		video=efifb:i17
	Macbook Pro 17", iMac 20" :
		video=efifb:i20

Accepted options:

======= ===========================================================
nowc	Don't map the framebuffer write combined. This can be used
	to workaround side-effects and slowdowns on other CPU cores
	when large amounts of console data are written.
======= ===========================================================

Edgar Hucek <gimli@dark-green.com>