ArmPlatformPkg/Bds: Signal when the variable 'Fdt' has been updated

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16589 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/Bds/BootMenu.c

@@ -15,6 +15,7 @@
 #include "BdsInternal.h"
 
 #include <Guid/ArmGlobalVariableHob.h>
+#include <Guid/ArmPlatformEvents.h>
 
 extern BDS_LOAD_OPTION_SUPPORT *BdsLoadOptionSupportList;
 
@@ -834,6 +835,7 @@ UpdateFdtPath (
   BDS_SUPPORTED_DEVICE      *SupportedBootDevice;
   EFI_DEVICE_PATH_PROTOCOL  *FdtDevicePathNodes;
   EFI_DEVICE_PATH_PROTOCOL  *FdtDevicePath;
+  EFI_EVENT                 UpdateFdtEvent;
 
   Status = SelectBootDevice (&SupportedBootDevice);
   if (EFI_ERROR(Status)) {
@@ -873,6 +875,23 @@ UpdateFdtPath (
     ASSERT_EFI_ERROR(Status);
   }
 
+  if (!EFI_ERROR (Status)) {
+    //
+    // Signal FDT has been updated
+    //
+    Status = gBS->CreateEventEx (
+        EVT_NOTIFY_SIGNAL,
+        TPL_NOTIFY,
+        EmptyCallbackFunction,
+        NULL,
+        &gArmPlatformUpdateFdtEventGuid,
+        &UpdateFdtEvent
+        );
+    if (!EFI_ERROR (Status)) {
+      gBS->SignalEvent (UpdateFdtEvent);
+    }
+  }
+
 EXIT:
   if (Status == EFI_ABORTED) {
     Print(L"\n");