Amol N Sukerkar has uploaded this change for review.

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src/lib: Add option to support native display init with vboot 2.0

This change allows display initialization natively in coreboot with vboot 2.0
authentication mechanism is enabled on a non-chromeos platform.

TEST=Set option CONFIG_VBOOT and clear CONFIG_VBOOT_MAY_SKIP_DISPLAY_INIT
     and the display should initialize in ramstage when platform boots. Set
     CONFIG_VBOOT and set CONFIG_VBOOT_MAY_SKIP_DISPLAY_INIT and the display
     initialization should be skipped in coreboot.

Signed-off-by: Sukerkar, Amol N <amol.n.sukerkar@intel.com>
Change-Id: I51361c267e0317d44a58cc5d740c3beb8924a57b
---
M src/lib/bootmode.c
1 file changed, 7 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/45/33845/1

diff --git a/src/lib/bootmode.c b/src/lib/bootmode.c
index 737dcf9..bb14cd1 100644
--- a/src/lib/bootmode.c
+++ b/src/lib/bootmode.c
@@ -2,6 +2,7 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -33,8 +34,12 @@
 
 int display_init_required(void)
 {
-	/* For vboot, always honor VBOOT_WD_FLAG_DISPLAY_INIT. */
-	if (CONFIG(VBOOT)) {
+	/* For vboot, always honor VBOOT_WD_FLAG_DISPLAY_INIT.
+	 * VBOOT_MAY_SKIP_DISPLAY_INIT, when selected, assumes
+	 * CHROMEOS configuration and allows the platform to skip
+	 * display init in normal boot.
+	 */
+	if (CONFIG(VBOOT_MAY_SKIP_DISPLAY_INIT)) {
 		/* Must always select MUST_REQUEST_DISPLAY when using this
 		   function. */
 		if (!CONFIG(VBOOT_MUST_REQUEST_DISPLAY))

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