1 files changed, 35 insertions, 0 deletions
diff --git a/roms/edk2/IntelFsp2Pkg/Library/BaseCacheAsRamLibNull/DisableCacheAsRamNull.c b/roms/edk2/IntelFsp2Pkg/Library/BaseCacheAsRamLibNull/DisableCacheAsRamNull.c
new file mode 100644
index 000000000..78abb6d5d
--- /dev/null
+++ b/roms/edk2/IntelFsp2Pkg/Library/BaseCacheAsRamLibNull/DisableCacheAsRamNull.c
@@ -0,0 +1,35 @@
+/** @file
+
+  Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi.h>
+#include <Library/BaseLib.h>
+#include <Library/CacheAsRamLib.h>
+
+/**
+  This function disable CAR.
+
+  @param[in] DisableCar       TRUE means use INVD, FALSE means use WBINVD
+
+**/
+VOID
+EFIAPI
+DisableCacheAsRam (
+  IN BOOLEAN                   DisableCar
+  )
+{
+  //
+  // Disable CAR
+  //
+
+  if (DisableCar) {
+    AsmInvd ();
+  } else {
+    AsmWbinvd();
+  }
+
+  return ;
+}