diff options
| author | Simon Glass <sjg@chromium.org> | 2025-03-15 14:25:30 +0000 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2025-04-03 11:41:55 -0600 |
| commit | 899ab6cd52a4827b80dc58d25695392da40eb8ab (patch) | |
| tree | 8ad0f788b0643122426a641123a33384abe91fbe | |
| parent | a9ba0080db7fd01b7e36c98fe6cf532a993c5127 (diff) | |
x86: Avoid clearing the VESA display
U-Boot clears the display when it starts up, so there is no need to ask
the VESA driver to do this. Fix this and add a comment explaining the
flags.
Signed-off-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | arch/x86/lib/bios.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/lib/bios.c b/arch/x86/lib/bios.c index 5dfe5a647eb..de4578666fb 100644 --- a/arch/x86/lib/bios.c +++ b/arch/x86/lib/bios.c @@ -231,7 +231,11 @@ static void vbe_set_graphics(int vesa_mode, struct vesa_state *mode_info) { unsigned char *framebuffer; - mode_info->video_mode = (1 << 14) | vesa_mode; + /* + * bit 14 is linear-framebuffer mode + * bit 15 means don't clear the display + */ + mode_info->video_mode = (1 << 14) | (1 << 15) | vesa_mode; vbe_get_mode_info(mode_info); framebuffer = (unsigned char *)(ulong)mode_info->vesa.phys_base_ptr; |