https://github.com/torvalds/linux
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Tip revision: 33d930e59a98fa10a0db9f56c7fa2f21a4aef9b9 authored by Linus Torvalds on 16 October 2017, 01:01:12 UTC
Linux 4.14-rc5
Tip revision: 33d930e
efifb.txt

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>
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