imx8: cleanup framebuffer code

We can get rid of a bunch of stuff now that we'r using a softscreen.

Get rid of the static Memimage and Memdata for the framebuffer;
just allocate gscreen as a memimage from the image pool.

Avoid exporting fbraw pointer, just have screeninit() return it.

Remove fbmemalloc() function. it used to create a write-thru
mapping but given that we are no more reading the framebuffer,
we can use ucalloc() instead.

1 files changed, 0 insertions, 6 deletions

diff --git a/sys/src/9/imx8/mmu.c b/sys/src/9/imx8/mmu.c
index 031514018..56e840fcf 100644
--- a/sys/src/9/imx8/mmu.c
+++ b/sys/src/9/imx8/mmu.c
@@ -517,9 +517,3 @@ ucalloc(usize size)
 {
 	return ucramalloc(size, 8, PTEUNCACHED);
 }
-
-void*
-fbmemalloc(usize size)
-{
-	return ucramalloc(PGROUND(size), BY2PG, PTEWT);
-}