[PATCH v2] IntelFsp2Pkg: add TempRamExitPpi.h.

["Chiu, Chasel" <chasel.chiu@intel.com>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1883

Add header file for FSP_TEMP_RAM_EXIT_PPI which is
defined by FSP 2.1 spec.

Test: Build successfully.

Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Signed-off-by: Chasel Chiu <chasel.chiu@intel.com>
---
 IntelFsp2Pkg/Include/Ppi/TempRamExitPpi.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 IntelFsp2Pkg/IntelFsp2Pkg.dec             |  5 +++++
 2 files changed, 57 insertions(+)

diff --git a/IntelFsp2Pkg/Include/Ppi/TempRamExitPpi.h b/IntelFsp2Pkg/Include/Ppi/TempRamExitPpi.h
new file mode 100644
index 0000000000..0db54dfa45
--- /dev/null
+++ b/IntelFsp2Pkg/Include/Ppi/TempRamExitPpi.h
@@ -0,0 +1,52 @@
+/** @file
+  This file defines the Silicon Temp Ram Exit PPI which implements the
+  required programming steps for disabling temporary memory.
+
+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _FSP_TEMP_RAM_EXIT_PPI_H_
+#define _FSP_TEMP_RAM_EXIT_PPI_H_
+
+///
+/// Global ID for the FSP_TEMP_RAM_EXIT_PPI.
+///
+#define FSP_TEMP_RAM_EXIT_GUID \
+  { \
+    0xbc1cfbdb, 0x7e50, 0x42be, { 0xb4, 0x87, 0x22, 0xe0, 0xa9, 0x0c, 0xb0, 0x52 } \
+  }
+
+//
+// Forward declaration for the FSP_TEMP_RAM_EXIT_PPI.
+//
+typedef struct _FSP_TEMP_RAM_EXIT_PPI FSP_TEMP_RAM_EXIT_PPI;
+
+/**
+  Silicon function for disabling temporary memory.
+  @param[in] TempRamExitParamPtr - Pointer to the TempRamExit parameters structure.
+                                   This structure is normally defined in the Integration
+                                   Guide. If it is not defined in the Integration Guide,
+                                   pass NULL.
+  @retval EFI_SUCCESS            - FSP execution environment was initialized successfully.
+  @retval EFI_INVALID_PARAMETER  - Input parameters are invalid.
+  @retval EFI_UNSUPPORTED        - The FSP calling conditions were not met.
+  @retval EFI_DEVICE_ERROR       - Temporary memory exit.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *FSP_TEMP_RAM_EXIT) (
+  IN  VOID    *TempRamExitParamPtr
+  );
+
+///
+/// This PPI provides function to disable temporary memory.
+///
+struct _FSP_TEMP_RAM_EXIT_PPI {
+  FSP_TEMP_RAM_EXIT   TempRamExit;
+};
+
+extern EFI_GUID gFspTempRamExitPpiGuid;
+
+#endif // _FSP_TEMP_RAM_EXIT_PPI_H_
diff --git a/IntelFsp2Pkg/IntelFsp2Pkg.dec b/IntelFsp2Pkg/IntelFsp2Pkg.dec
index cc17164742..ad2b7f7fb5 100644
--- a/IntelFsp2Pkg/IntelFsp2Pkg.dec
+++ b/IntelFsp2Pkg/IntelFsp2Pkg.dec
@@ -49,6 +49,11 @@
   #
   gFspInApiModePpiGuid                  = { 0xa1eeab87, 0xc859, 0x479d, {0x89, 0xb5, 0x14, 0x61, 0xf4, 0x06, 0x1a, 0x3e}}
 
+  #
+  # PPI to tear down the temporary memory set up by TempRamInit ().
+  #
+  gFspTempRamExitPpiGuid      = {0xbc1cfbdb, 0x7e50, 0x42be, {0xb4, 0x87, 0x22, 0xe0, 0xa9, 0x0c, 0xb0, 0x52}}
+
 [Guids]
   #
   # GUID defined in package
-- 
2.13.3.windows.1