1 files changed, 30 insertions, 0 deletions
diff --git a/OvmfPkg/Library/BaseMemEncryptSevLib/X64/SnpPageStateChange.h b/OvmfPkg/Library/BaseMemEncryptSevLib/X64/SnpPageStateChange.h
new file mode 100644
index 0000000000..b396f0ffbd
--- /dev/null
+++ b/OvmfPkg/Library/BaseMemEncryptSevLib/X64/SnpPageStateChange.h
@@ -0,0 +1,30 @@
+/** @file
+
+  SEV-SNP Page Validation functions.
+
+  Copyright (c) 2021 AMD Incorporated. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef SNP_PAGE_STATE_INTERNAL_H_
+#define SNP_PAGE_STATE_INTERNAL_H_
+
+//
+// SEV-SNP Page states
+//
+typedef enum {
+  SevSnpPagePrivate,
+  SevSnpPageShared,
+} SEV_SNP_PAGE_STATE;
+
+VOID
+InternalSetPageState (
+  IN EFI_PHYSICAL_ADDRESS  BaseAddress,
+  IN UINTN                 NumPages,
+  IN SEV_SNP_PAGE_STATE    State,
+  IN BOOLEAN               UseLargeEntry
+  );
+
+#endif