OpenCoreMisc: Support Boot Resolution option

Docs/Configuration.tex

@@ -1221,6 +1221,20 @@ behaviour that does not go to any other sections
   \textbf{Description}: Reinstalls apple boot policy protocol with a builtin
   version. This may be used to ensure APFS compatibility on VMs or legacy Macs.
 
+\item
+  \texttt{Resolution}\\
+  \textbf{Type}: \texttt{plist\ string}\\
+  \textbf{Default value}: Empty string\\
+  \textbf{Description}: Sets console output screen resolution as specified
+  with the \texttt{WxH@Bpp} (e.g. \texttt{1920x1080@32}) or
+  \texttt{WxH} (e.g. \texttt{1920x1080}) formatted string. Set to empty string
+  not to change screen resolution. Set to \texttt{Max} to try to use largest
+  available screen resolution.
+
+  \emph{Note}: This will fail when console handle has no GOP protocol. When
+  the firmware does not provide it, it can be added with \texttt{ProvideConsoleGop}
+  UEFI quirk set to \texttt{true}.
+
 \item
   \texttt{ShowPicker}\\
   \textbf{Type}: \texttt{plist\ boolean}\\

Docs/Sample.plist

@@ -357,6 +357,8 @@
 			<true/>
 			<key>ReinstallProtocol</key>
 			<true/>
+			<key>Resolution</key>
+			<string></string>
 			<key>ShowPicker</key>
 			<true/>
 			<key>Timeout</key>

Platform/OpenCore/OpenCoreMisc.c

@@ -21,6 +21,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Library/DevicePathLib.h>
 #include <Library/MemoryAllocationLib.h>
 #include <Library/OcAppleBootPolicyLib.h>
+#include <Library/OcConsoleLib.h>
 #include <Library/OcDebugLogLib.h>
 #include <Library/PrintLib.h>
 #include <Library/UefiBootServicesTableLib.h>
@@ -143,7 +144,11 @@ OcMiscLateInit (
   OUT EFI_HANDLE                *LoadHandle OPTIONAL
   )
 {
-  EFI_STATUS  Status;
+  EFI_STATUS   Status;
+  UINT32       Width;
+  UINT32       Height;
+  UINT32       Bpp;
+  BOOLEAN      SetMax;
 
   if (Config->Misc.Debug.ExposeBootPath) {
     OcStoreLoadPath (LoadPath);
@@ -172,5 +177,24 @@ OcMiscLateInit (
     }
   }
 
+  ParseScreenResolution (
+    OC_BLOB_GET (&Config->Misc.Boot.Resolution),
+    &Width,
+    &Height,
+    &Bpp,
+    &SetMax
+    );
+
+  if (SetMax || (Width > 0 && Height > 0)) {
+    Status = SetConsoleResolution (Width, Height, Bpp);
+    DEBUG ((
+      DEBUG_INFO,
+      "OC: Changed resolution to %u:%u@%u (max: %d)\n",
+      Width,
+      Height,
+      Bpp
+      ));
+  }
+
   return Status;
 }