OvmfPkg/PlatformPei: Add InitializeRamRegions function

In the next commit we will update the Xen boot path
to also use this function.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15206 6f19259b-4bc3-4df7-8a09-765794883524

OvmfPkg/PlatformPei/MemDetect.c

@@ -122,19 +122,19 @@ PublishPeiMemory (
 
 
 /**
-  Peform Memory Detection
-
-  @return Top of memory
+  Peform Memory Detection for QEMU / KVM
 
 **/
-EFI_PHYSICAL_ADDRESS
-MemDetect (
+STATIC
+VOID
+QemuInitializeRam (
+  VOID
   )
 {
   UINT64                      LowerMemorySize;
   UINT64                      UpperMemorySize;
 
-  DEBUG ((EFI_D_ERROR, "MemDetect called\n"));
+  DEBUG ((EFI_D_INFO, "%a called\n", __FUNCTION__));
 
   //
   // Determine total memory size available
@@ -157,7 +157,16 @@ MemDetect (
 
     MtrrSetMemoryAttribute (BASE_4GB, UpperMemorySize, CacheWriteBack);
   }
-
-  return LowerMemorySize;
 }
 
+/**
+  Publish system RAM and reserve memory regions
+
+**/
+VOID
+InitializeRamRegions (
+  VOID
+  )
+{
+  QemuInitializeRam ();
+}

OvmfPkg/PlatformPei/Platform.c

@@ -355,7 +355,7 @@ InitializePlatform (
   PublishPeiMemory ();
 
   if (!mXen) {
-    MemDetect ();
+    InitializeRamRegions ();
   }
 
   if (mXen) {

OvmfPkg/PlatformPei/Platform.h

@@ -69,8 +69,8 @@ GetSystemMemorySizeBelow4gb (
   VOID
   );
 
-EFI_PHYSICAL_ADDRESS
-MemDetect (
+VOID
+InitializeRamRegions (
   VOID
   );