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| author | Rob Clark <robdclark@gmail.com> | 2017-08-03 12:47:01 -0400 |
|---|---|---|
| committer | Anatolij Gustschin <agust@denx.de> | 2017-09-12 13:40:47 +0200 |
| commit | 8ef05352508f99b9e69feeca17a49671cc3d0ccf (patch) | |
| tree | 2d306cda8e7d18c70881e1b816f344d73d33809c | |
| parent | 971d7e64245d5970ae9fe9a1f418e2900663248a (diff) | |
| download | u-boot-8ef05352508f99b9e69feeca17a49671cc3d0ccf.tar.gz u-boot-8ef05352508f99b9e69feeca17a49671cc3d0ccf.tar.xz u-boot-8ef05352508f99b9e69feeca17a49671cc3d0ccf.zip | |
video: add config option to skip framebuffer clear
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 <robdclark@gmail.com>
| -rw-r--r-- | drivers/video/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/video/cfb_console.c | 3 | ||||
| -rw-r--r-- | drivers/video/video-uclass.c | 4 |
3 files changed, 13 insertions, 2 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 5505ee6f57..7ba7b580db 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -119,6 +119,14 @@ 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-boot + 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 6c5425c195..74cc20d653 100644 --- a/drivers/video/cfb_console.c +++ b/drivers/video/cfb_console.c @@ -2081,7 +2081,8 @@ 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 |