FwRuntimeServices: Fixed enabling RO/WO variables before OS start

Causes vsmc-status not being set when FwRuntimeServices.efi was loading before VirtualSmc.efi.
closes acidanthera/bugtracker#515

Changelog.md

@@ -1,6 +1,9 @@
 AppleSupport Changelog
 ======================
 
+#### v2.1.2
+- Fixed enabling RO/WO variables before OS start
+
 #### v2.1.1
 - Moved AppleGenericInput into OpenCore mainline
 

Include/AppleSupportPkgVersion.h

@@ -19,7 +19,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #ifndef APPLE_SUPPORT_VERSION_H
 #define APPLE_SUPPORT_VERSION_H
 
-#define APPLE_SUPPORT_VERSION  L"2.1.1"
+#define APPLE_SUPPORT_VERSION  L"2.1.2"
 
 
 #endif // APPLE_SUPPORT_VERSION_H

Platform/FwRuntimeServices/UefiRuntimeServices.c

@@ -49,6 +49,7 @@ OC_FWRT_CONFIG  *gCurrentConfig;
 **/
 STATIC EFI_EVENT                     mTranslateEvent;
 STATIC EFI_GET_VARIABLE              mCustomGetVariable;
+STATIC BOOLEAN                       mKernelStarted;
 
 STATIC
 VOID
@@ -271,6 +272,7 @@ WrapGetVariable (
   // Abort access to write-only variables.
   //
   if (gCurrentConfig->RestrictedVariables
+    && mKernelStarted
     && CompareGuid (VendorGuid, &gOcWriteOnlyVariableGuid)) {
     return EFI_SECURITY_VIOLATION;
   }
@@ -528,6 +530,7 @@ WrapSetVariable (
   // Abort access to read-only variables.
   //
   if (gCurrentConfig->RestrictedVariables
+    && mKernelStarted
     && CompareGuid (VendorGuid, &gOcReadOnlyVariableGuid)) {
     return EFI_SECURITY_VIOLATION;
   }
@@ -641,6 +644,11 @@ TranslateAddressesHandler (
 
   gRT->ConvertPointer (0, (VOID **) &gCurrentConfig);
   mCustomGetVariable = NULL;
+
+  //
+  // Ideally we do that from ExitBootServices, but VirtualAddressChange is fine as well.
+  //
+  mKernelStarted     = TRUE;
 }
 
 VOID