The use-case is that the thing that loaded u-boot already put a splash
image on screen. And we want to preserve that until grub boot menu
takes over.
Signed-off-by: Rob Clark <robdcl...@gmail.com>
---
drivers/video/Kconfig | 8 ++++++++
drivers/video/cfb_console.c | 3 ++-
drivers/video/video-uclass.c | 4 +++-
3 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 8eb0359231..7b56b20344 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -98,6 +98,14 @@ config SYS_WHITE_ON_BLACK
better in low-light situations or to reduce eye strain in some
cases.
+config NO_FB_CLEAR
+ bool "Skip framebuffer clear"
+ help
+ If firmware (whatever loads u-boot) has already put a splash image
+ on screen, you might want to preserve it until whatever u-boots
+ loads takes over the screen. This, for example, can be used to
+ keep splash image on screen until grub graphical boot menu starts.
+
source "drivers/video/fonts/Kconfig"
config VIDCONSOLE_AS_LCD
diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c
index f54802052e..85fa5b0cae 100644
--- a/drivers/video/cfb_console.c
+++ b/drivers/video/cfb_console.c
@@ -2091,7 +2091,8 @@ static int cfg_video_init(void)
}
eorx = fgx ^ bgx;
- video_clear();
+ if (!CONFIG_IS_ENABLED(NO_FB_CLEAR))
+ video_clear();
#ifdef CONFIG_VIDEO_LOGO
/* Plot the logo and get start point of console */
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index 3036e3a1f2..dfa39b0d1b 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -199,7 +199,9 @@ static int video_post_probe(struct udevice *dev)
#else
priv->colour_bg = 0xffffff;
#endif
- video_clear(dev);
+
+ if (!CONFIG_IS_ENABLED(NO_FB_CLEAR))
+ video_clear(dev);
/*
* Create a text console device. For now we always do this, although
--
2.13.0
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
