[PATCH] MdeModulePkg/Logo: Add a PCD to control the position of the Logo

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

When set to true, the Logo is positioned according to the BGRT
specification, 38.2% from the top of the screen. When set to false,
no behaviour is changed and the logo is positioned centrally.

Cc: Zhichao Gao <zhichao.gao@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
---
 MdeModulePkg/Logo/Logo.c      | 28 +++++++++++++++++++++++++++-
 MdeModulePkg/Logo/LogoDxe.inf |  4 ++++
 MdeModulePkg/MdeModulePkg.dec |  6 ++++++
 MdeModulePkg/MdeModulePkg.uni |  6 ++++++
 4 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/MdeModulePkg/Logo/Logo.c b/MdeModulePkg/Logo/Logo.c
index 8ab874d2da..96e34b2011 100644
--- a/MdeModulePkg/Logo/Logo.c
+++ b/MdeModulePkg/Logo/Logo.c
@@ -13,6 +13,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include <Protocol/HiiPackageList.h>
 #include <Library/UefiBootServicesTableLib.h>
 #include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
 
 typedef struct {
   EFI_IMAGE_ID                             ImageId;
@@ -51,12 +52,14 @@ GetImage (
   IN     EDKII_PLATFORM_LOGO_PROTOCOL        *This,
   IN OUT UINT32                              *Instance,
   OUT EFI_IMAGE_INPUT                        *Image,
+  EFI_GRAPHICS_OUTPUT_PROTOCOL               *GraphicsOutput,
   OUT EDKII_PLATFORM_LOGO_DISPLAY_ATTRIBUTE  *Attribute,
   OUT INTN                                   *OffsetX,
   OUT INTN                                   *OffsetY
   )
 {
-  UINT32  Current;
+  UINT32      Current;
+  EFI_STATUS  Status;
 
   if ((Instance == NULL) || (Image == NULL) ||
       (Attribute == NULL) || (OffsetX == NULL) || (OffsetY == NULL))
@@ -69,6 +72,29 @@ GetImage (
     return EFI_NOT_FOUND;
   }
 
+  if (PcdGetBool (PcdFollowMicrosoftRecommended)) {
+    //
+    // Get current video resolution and text mode
+    //
+    Status = gBS->HandleProtocol (
+                    gST->ConsoleOutHandle,
+                    &gEfiGraphicsOutputProtocolGuid,
+                    (VOID **)&GraphicsOutput
+                    );
+    if (!EFI_ERROR (Status)) {
+      //
+      // Center of LOGO is in the vertical position 38.2% when PcdBootLogoOnlyEnable is TRUE
+      // Y = (VerticalResolution - LogoHeight) / 2
+      // Y' = VerticalResolution * 0.382 - LogoHeight * 0.5
+      // OffsetY + Y = Y'
+      // OffsetY = Y' - Y = -0.118 * VerticalResolution
+      //
+      *Attribute = EdkiiPlatformLogoDisplayAttributeCenter;
+      *OffsetX   = 0;
+      *OffsetY   = -118 * (INTN)GraphicsOutput->Mode->Info->VerticalResolution / 1000;
+    }
+  }
+
   (*Instance)++;
   *Attribute = mLogos[Current].Attribute;
   *OffsetX   = mLogos[Current].OffsetX;
diff --git a/MdeModulePkg/Logo/LogoDxe.inf b/MdeModulePkg/Logo/LogoDxe.inf
index 41215d25d8..ce29950089 100644
--- a/MdeModulePkg/Logo/LogoDxe.inf
+++ b/MdeModulePkg/Logo/LogoDxe.inf
@@ -41,6 +41,7 @@
   UefiBootServicesTableLib
   UefiDriverEntryPoint
   DebugLib
+  PcdLib
 
 [Protocols]
   gEfiHiiDatabaseProtocolGuid        ## CONSUMES
@@ -48,6 +49,9 @@
   gEfiHiiPackageListProtocolGuid     ## PRODUCES CONSUMES
   gEdkiiPlatformLogoProtocolGuid     ## PRODUCES
 
+[Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFollowMicrosoftRecommended ## CONSUMES
+
 [Depex]
   gEfiHiiDatabaseProtocolGuid AND
   gEfiHiiImageExProtocolGuid
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index be5e829ca9..c8bb51df3b 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -2102,6 +2102,12 @@
   # @Prompt The shared bit mask when Intel Tdx is enabled.
   gEfiMdeModulePkgTokenSpaceGuid.PcdTdxSharedBitMask|0x0|UINT64|0x10000025
 
+  ## This PCD sets the position of the Boot Logo.
+  #   TRUE  - The Logo is positioned following the recommendations from Microsoft.
+  #   FALSE - The logo is positioned in the center of the screen.
+  # @ Prompt This position of the boot logo
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFollowMicrosoftRecommended|FALSE|BOOLEAN|0x10000026
+
 [PcdsPatchableInModule]
   ## Specify memory size with page number for PEI code when
   #  Loading Module at Fixed Address feature is enabled.
diff --git a/MdeModulePkg/MdeModulePkg.uni b/MdeModulePkg/MdeModulePkg.uni
index 33ce9f6198..09c1ac1cc1 100644
--- a/MdeModulePkg/MdeModulePkg.uni
+++ b/MdeModulePkg/MdeModulePkg.uni
@@ -1338,3 +1338,9 @@
 #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdPcieResizableBarSupport_HELP #language en-US "Indicates if the PCIe Resizable BAR Capability Supported.<BR><BR>\n"
                                                                                             "TRUE  - PCIe Resizable BAR Capability is supported.<BR>\n"
                                                                                             "FALSE - PCIe Resizable BAR Capability is not supported.<BR>"
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdFollowMicrosoftRecommended_PROMPT #language en-US "The position of the Boot Logo"
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdFollowMicrosoftRecommend_HELP   #language en-US "Sets the position of the Logo. When set to true, the Logo is positioned following the recommendations"
+                                                                                             " from Microsoft, 38.2% from the top of the screen."
+
-- 
2.37.2