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authorHans de Goede <hdegoede@redhat.com>2018-09-26 18:11:22 +0200
committerBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2018-09-26 18:11:22 +0200
commitcf7389b8095fabae076ef28b49dc3059b9eb899f (patch)
treeadf90970f5ff1857a2796227a28ebec0d3ae75ce /drivers/video
parent1bafcbf59fed92af58955024452f45430d3898c5 (diff)
downloadlinux-cf7389b8095fabae076ef28b49dc3059b9eb899f.tar.bz2
efifb: BGRT: Add nobgrt option
In some setups restoring the BGRT logo is undesirable, allow passing video=efifb:nobgrt on the kernel commandline to disable it. Reported-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/fbdev/efifb.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index 3946649b85c8..ba906876cc45 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -42,6 +42,7 @@ struct bmp_dib_header {
u32 colors_important;
} __packed;
+static bool use_bgrt = true;
static bool request_mem_succeeded = false;
static u64 mem_flags = EFI_MEMORY_WC | EFI_MEMORY_UC;
@@ -160,6 +161,9 @@ static void efifb_show_boot_graphics(struct fb_info *info)
void *bgrt_image = NULL;
u8 *dst = info->screen_base;
+ if (!use_bgrt)
+ return;
+
if (!bgrt_tab.image_address) {
pr_info("efifb: No BGRT, not showing boot graphics\n");
return;
@@ -290,6 +294,8 @@ static int efifb_setup(char *options)
screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0);
else if (!strcmp(this_opt, "nowc"))
mem_flags &= ~EFI_MEMORY_WC;
+ else if (!strcmp(this_opt, "nobgrt"))
+ use_bgrt = false;
}
}