[PATCH 03/18] MdeModulePackage: Add option to follow BGRT spec

["Sean Rhodes" <sean@starlabs.systems>]

Add option to centre the Boot Logo 38.2% from the top of screen, following
the BGRT specification.

Signed-off-by: Sean Rhodes <sean@starlabs.systems>
---
 MdeModulePkg/Library/BootLogoLib/BootLogoLib.c   | 7 ++++++-
 MdeModulePkg/Library/BootLogoLib/BootLogoLib.inf | 3 +++
 MdeModulePkg/MdeModulePkg.dec                    | 3 +++
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/MdeModulePkg/Library/BootLogoLib/BootLogoLib.c b/MdeModulePkg/Library/BootLogoLib/BootLogoLib.c
index 478ec2d40e..928f37a2e1 100644
--- a/MdeModulePkg/Library/BootLogoLib/BootLogoLib.c
+++ b/MdeModulePkg/Library/BootLogoLib/BootLogoLib.c
@@ -176,7 +176,12 @@ BootLogoEnableLogo (
         break;
       case EdkiiPlatformLogoDisplayAttributeCenter:
         DestX = (SizeOfX - Image.Width) / 2;
-        DestY = (SizeOfY - Image.Height) / 2;
+        if (FixedPcdGetBool (PcdFollowBGRTSpec)) {
+          DestY = (SizeOfY * 382) / 1000 - Image.Height / 2;
+        } else {
+          DestY = (SizeOfY - Image.Height) / 2;
+        }
+
         break;
       case EdkiiPlatformLogoDisplayAttributeCenterRight:
         DestX = SizeOfX - Image.Width;
diff --git a/MdeModulePkg/Library/BootLogoLib/BootLogoLib.inf b/MdeModulePkg/Library/BootLogoLib/BootLogoLib.inf
index 7d50f2dfa3..03ff038f47 100644
--- a/MdeModulePkg/Library/BootLogoLib/BootLogoLib.inf
+++ b/MdeModulePkg/Library/BootLogoLib/BootLogoLib.inf
@@ -48,5 +48,8 @@
   gEfiUserManagerProtocolGuid                   ## CONSUMES
   gEdkiiPlatformLogoProtocolGuid                ## CONSUMES
 
+[Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFollowBGRTSpec
+
 [FeaturePcd]
   gEfiMdePkgTokenSpaceGuid.PcdUgaConsumeSupport ## CONSUMES
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index 463e889e9a..b4855431b0 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -2079,6 +2079,9 @@
   # @Prompt Enable PCIe Resizable BAR Capability support.
   gEfiMdeModulePkgTokenSpaceGuid.PcdPcieResizableBarSupport|FALSE|BOOLEAN|0x10000024
 
+  # Follow BGRT Specifcation
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFollowBGRTSpec|FALSE|BOOLEAN|0x00000025
+
 [PcdsPatchableInModule]
   ## Specify memory size with page number for PEI code when
   #  Loading Module at Fixed Address feature is enabled.
-- 
2.32.0