Re: [PATCH] Framebuffer support on the Intel Mac

[Marco Gerards <mgerards@xs4all.nl>]

Marco Gerards <mgerards@xs4all.nl> writes:

Hi,

> When booting the Intel Mac in non-legacy mode (EFI), it doesn't
> support textmode.  In order to get a console in Xen, I have written a
> framebuffer for the Intel Mac.  At the moment it was only tested on
> the MacBook.  Because a framebuffer is capable of showing more than
> just text, I have added the Xen logo at startup.  I made a photo last
> week, although this was while I was hacking it and this was under
> xen-testing.  But it should give you an impression of what it looks
> like.  See the end of the email for the URLs.

Something I forgot to mention is that I was unable to use ioremap to
map in the video memory.  But the memory was already mapped to the
virtual memory address that matches the physical address.  

To be honest, I do not know (yet) why ioremap doesn't work in this
case and why directly accessing the memory does work.  I am wondering
if this will cause problems at a later stage, Xen does not boot all
the way yet because there other other things I have to change before
Xen will work properly with EFI.

--
Marco