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security/vboot: Add config option to always enable the display 

In order to always show the bootlogo very early in coreboot we need the
option to always enable the display when VBOOT is enabled.

To do this a config option is added to make sure this functionality can
be provided without interfering with systems that require the standard
VBOOT display handing.

BUG=N/A
TEST=tested on facebook fbg1701.

Change-Id: I3ffaac85d2082717bb9608d536f7cec66a583789
Signed-off-by: Wim Vervoorn <wvervoorn@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36547
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Wim Vervoorn 2019-11-15 14:02:02 +01:00 committed by Patrick Georgi
parent 3557f12458
commit e7087a19bc
2 changed files with 7 additions and 1 deletions
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6
src/security/vboot/Kconfig
View File

@ -167,6 +167,12 @@ config VBOOT_MUST_REQUEST_DISPLAY
Unless display is specifically requested, the video option ROM is not
loaded, and any other native display initialization code is not run.
config VBOOT_ALWAYS_ENABLE_DISPLAY
bool "Force to always enable display"
default n
help
Set this option to indicate to vboot that display should always be enabled.
config VBOOT_HAS_REC_HASH_SPACE
bool
default n

2
src/security/vboot/vboot_logic.c
View File

@ -369,7 +369,7 @@ void verstage_main(void)
ctx->flags |= VB2_CONTEXT_NOFAIL_BOOT;
/* Mainboard/SoC always initializes display. */
if (!CONFIG(VBOOT_MUST_REQUEST_DISPLAY))
if (!CONFIG(VBOOT_MUST_REQUEST_DISPLAY) || CONFIG(VBOOT_ALWAYS_ENABLE_DISPLAY))
ctx->flags |= VB2_CONTEXT_DISPLAY_INIT;
/* Do early init (set up secdata and NVRAM, load GBB) */