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 ---
Changes in v6: None Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None
arch/x86/lib/fsp/fsp_graphics.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/x86/lib/fsp/fsp_graphics.c b/arch/x86/lib/fsp/fsp_graphics.c index 91d2d08557..226c7e66b3 100644 --- a/arch/x86/lib/fsp/fsp_graphics.c +++ b/arch/x86/lib/fsp/fsp_graphics.c @@ -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);