[U-Boot] [PATCH v2 05/22] x86: config: Always scroll the display by 5 lines, for speed

Simon Glass sjg at chromium.org
Fri Jan 2 00:17:58 CET 2015


Scrolling a line at a time is very slow for reasons that I don't understand.
It seems to take about 100ms to copy 4MB of RAM in the frame buffer. To cope
with this, scroll 5 lines each time.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v2: None

 include/configs/x86-common.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/configs/x86-common.h b/include/configs/x86-common.h
index f16ae32..4f0a3c5 100644
--- a/include/configs/x86-common.h
+++ b/include/configs/x86-common.h
@@ -179,6 +179,7 @@
 #define VIDEO_FB_16BPP_WORD_SWAP
 #define CONFIG_I8042_KBD
 #define CONFIG_CFB_CONSOLE
+#define CONFIG_CONSOLE_SCROLL_LINES 5
 
 /*-----------------------------------------------------------------------
  * CPU Features
-- 
2.2.0.rc0.207.ga3a616c



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