[RFC PATCH v4 12/12] CryptoPkg/BaseCryptLib: allow MM_STANDALONE drivers to use this library

[Jagadeesh Ujja <jagadeesh.ujja@arm.com>]

“BaseCryptLib” library can be used by MM_STANDALONE drivers as well.
So add MM_STANDALONE as the module type this library supports

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jagadeesh Ujja <jagadeesh.ujja@arm.com>
---
 CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf       |  7 ++++++-
 CryptoPkg/Library/BaseCryptLib/RuntimeCryptLib.inf    |  4 ++++
 CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c | 15 +++++++++------
 3 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf b/CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf
index f29445c..7d93fe2 100644
--- a/CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf
+++ b/CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf
@@ -7,6 +7,7 @@
 #  buffer overflow or integer overflow.
 #
 #  Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2018, ARM Limited. All rights reserved.<BR>
 #  This program and the accompanying materials
 #  are licensed and made available under the terms and conditions of the BSD License
 #  which accompanies this distribution.  The full text of the license may be found at
@@ -24,7 +25,7 @@
   FILE_GUID                      = be3bb803-91b6-4da0-bd91-a8b21c18ca5d
   MODULE_TYPE                    = DXE_DRIVER
   VERSION_STRING                 = 1.0
-  LIBRARY_CLASS                  = BaseCryptLib|DXE_DRIVER DXE_CORE UEFI_APPLICATION UEFI_DRIVER
+  LIBRARY_CLASS                  = BaseCryptLib|DXE_DRIVER DXE_CORE UEFI_APPLICATION UEFI_DRIVER MM_STANDALONE
 
 #
 # The following information is for reference only and not required by the build tools.
@@ -85,6 +86,10 @@
   OpensslLib
   IntrinsicLib
   PrintLib
+  PcdLib
+
+[Pcd]
+  gEfiMdePkgTokenSpaceGuid.PcdStandaloneMmVariableEnabled
 
 #
 # Remove these [BuildOptions] after this library is cleaned up
diff --git a/CryptoPkg/Library/BaseCryptLib/RuntimeCryptLib.inf b/CryptoPkg/Library/BaseCryptLib/RuntimeCryptLib.inf
index 32628c8..4ce5a6f 100644
--- a/CryptoPkg/Library/BaseCryptLib/RuntimeCryptLib.inf
+++ b/CryptoPkg/Library/BaseCryptLib/RuntimeCryptLib.inf
@@ -91,6 +91,10 @@
   OpensslLib
   IntrinsicLib
   PrintLib
+  PcdLib
+
+[Pcd]
+  gEfiMdePkgTokenSpaceGuid.PcdStandaloneMmVariableEnabled
 
 #
 # Remove these [BuildOptions] after this library is cleaned up
diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c b/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
index 5f9b0c2..b7c57bb 100644
--- a/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
+++ b/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
@@ -3,6 +3,7 @@
   for OpenSSL-based Cryptographic Library (used in DXE & RUNTIME).
 
 Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2018, ARM Limited. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -77,12 +78,14 @@ time_t time (time_t *timer)
   time_t      CalTime;
   UINTN       Year;
 
-  //
-  // Get the current time and date information
-  //
-  Status = gRT->GetTime (&Time, NULL);
-  if (EFI_ERROR (Status) || (Time.Year < 1970)) {
-    return 0;
+  if (!PcdGetBool (PcdStandaloneMmVariableEnabled)) {
+    //
+    // Get the current time and date information
+    //
+    Status = gRT->GetTime (&Time, NULL);
+    if (EFI_ERROR (Status) || (Time.Year < 1970)) {
+      return 0;
+    }
   }
 
   //
-- 
2.7.4