1 files changed, 28 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Include/Protocol/SmmPciRootBridgeIo.h b/roms/edk2/MdePkg/Include/Protocol/SmmPciRootBridgeIo.h
new file mode 100644
index 000000000..a275be3d5
--- /dev/null
+++ b/roms/edk2/MdePkg/Include/Protocol/SmmPciRootBridgeIo.h
@@ -0,0 +1,28 @@
+/** @file
+  SMM PCI Root Bridge IO protocol as defined in the PI 1.2 specification.
+
+  This protocol provides PCI I/O and memory access within SMM.
+
+  Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _SMM_PCI_ROOT_BRIDGE_IO_H_
+#define _SMM_PCI_ROOT_BRIDGE_IO_H_
+
+#include <Protocol/MmPciRootBridgeIo.h>
+
+#define EFI_SMM_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID EFI_MM_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID
+
+///
+/// This protocol provides the same functionality as the PCI Root Bridge I/O Protocol defined in the
+/// UEFI 2.1 Specifcation, section 13.2, except that the functions for Map() and Unmap() may return
+/// EFI_UNSUPPORTED.
+///
+typedef EFI_MM_PCI_ROOT_BRIDGE_IO_PROTOCOL  EFI_SMM_PCI_ROOT_BRIDGE_IO_PROTOCOL;
+
+extern EFI_GUID gEfiSmmPciRootBridgeIoProtocolGuid;
+
+#endif
+