[coreboot-gerrit] Patch set updated for coreboot: 3639d78 lenovo/x60/i915.c: Add comment about `FRAME_BUFFER_PAGES` in `set_gtt()`

[Paul Menzel]

Paul Menzel ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5938

-gerrit

commit 3639d78694c9a32c5c065cda7b44381f884da36a
Author: Paul Menzel 
Date:   Thu Jun 5 21:36:18 2014 +0200

lenovo/x60/i915.c: Add comment about `FRAME_BUFFER_PAGES` in `set_gtt()`

The define FRAME_BUFFER_PAGES = (1024 * 768)/1024 should be exactly
    the amount of needed pages. But using that value causes corruptions
    of the GRUB menu screen.

Change-Id: Ifae2a50080b0fbcdd0d3489c8da1535cbbb05eef
    Signed-off-by: Paul Menzel 
---
 src/mainboard/lenovo/x60/i915.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/mainboard/lenovo/x60/i915.c b/src/mainboard/lenovo/x60/i915.c
index 328b0cb..af7a789 100644
--- a/src/mainboard/lenovo/x60/i915.c
+++ b/src/mainboard/lenovo/x60/i915.c
@@ -352,6 +352,7 @@ int i915lightup(unsigned int pphysbase, unsigned int piobase,
    	return 0;
    }

+	/* Why does FRAME_BUFFER_PAGES = 768 cause corruptions in GRUB? */
    setgtt(0, 800, physbase, 4096);

temp = READ32(PGETBL_CTL);