dany/u-boot-megous
1
0
Fork 0
mirror of https://xff.cz/git/u-boot/ synced 2025-09-01 00:32:04 +02:00
Code Issues Packages Projects Releases Wiki Activity

x86: fsp: Set up an MTRR for the graphics frame buffer

Browse Source 
The FSP-S may do this but at least for coral it does not. Set this up so
that graphics is not deathly slow.

It isn't clear whether the FSP is expected to set up MTRR. It is not
mentioned in the APL FSP document.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2019-12-06 21:42:19 -07:00
committed by Bin Meng
parent cf87d3b503
commit e98791ab80
1 changed files with 4 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/lib/fsp/fsp_graphics.c
View File

@@ -8,6 +8,7 @@
#include <vbe.h>
#include <video.h>
#include <asm/fsp/fsp_support.h>
#include <asm/mtrr.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -97,6 +98,9 @@ static int fsp_video_probe(struct udevice *dev)
if (ret)
goto err;
mtrr_add_request(MTRR_TYPE_WRCOMB, vesa->phys_base_ptr, 256 << 20);
mtrr_commit(true);
printf("%dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
vesa->bits_per_pixel);