[PATCH xserver] Add definitions for the AArch64 architecture

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Mon Jan 7 05:10:07 PST 2013

Dear Marcin Juszkiewicz,

On Mon, 07 Jan 2013 14:00:33 +0100, Marcin Juszkiewicz wrote:

> >> Order is reverse. I went that way first time but image booted in 
> >> AArch64 commercial fast model shown distorted xterm [1]. Changed
> >> to MSBFirst and xterm starts and displays properly [2].
> > 
> > I guess AArch64 runs Little-endian, no?
> So far everyone agreed that AArch64 will be used with Little endian.
> Big endian should be possible but can be skipped for now.

Ok, that was my understanding as well, which lead to the usage of

> > If so, why would the order be MSBFirst? Of course, I see that it
> > "fixes" the problem for you, but I'd like to understand the fix.
> I concentrated on getting it working. Will try to understand it
> later ;(

Ok. Using MSBFirst for a little-endian architecture sounds odd, no?
Except if the graphics hardware somehow has a different endianess, I
don't know.

> > Also, is the AArch64 model with graphic support publicly available?
> You need to buy license from ARM Ltd. I have access due to my Linaro
> work.

Argh. Too bad.


Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.

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