[Bug 240294] x11-drivers/xf86-video-ast does not work on FreeBSD 12

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240294

--- Comment #13 from darius at dons.net.au ---
I did some more digging and found this patch to the Linux DRM driver:
https://patchwork.kernel.org/patch/9578793/

Where it talks about P2A access being disabled for security - so I am wondering
if a BMC or BIOS update has flipped that to fix a security vulnerability.

That patch talks about using device tree but I don't know how to do that in
FreeBSD so hard coded defaults will have to do.

I will also submit this patch upstream.

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