FeatureFlag type PCD flags are declared by typecasting an integer value
to BOOLEAN. These flags cannot be use in assembly code as assembler does
not recognise C primitive types. Change the flag data type from BOOLEAN
to UINT32.

Signed-off-by: Nishant Sharma <nishant.sha...@arm.com>
---
 ArmPkg/ArmPkg.dec                                                              
     | 14 +++++++-------
 ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf                    
     |  4 ++--
 
StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf
   |  4 ++--
 ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.c                      
     |  8 ++++----
 
StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/StandaloneMmCoreEntryPoint.c
 |  8 ++++----
 5 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/ArmPkg/ArmPkg.dec b/ArmPkg/ArmPkg.dec
index 1a16d044c94b..c36c23e2e059 100644
--- a/ArmPkg/ArmPkg.dec
+++ b/ArmPkg/ArmPkg.dec
@@ -155,13 +155,6 @@
   # hardware coherency (i.e., no virtualization or cache coherent DMA)
   
gArmTokenSpaceGuid.PcdNormalMemoryNonshareableOverride|FALSE|BOOLEAN|0x00000043
 
-[PcdsFeatureFlag.AARCH64, PcdsFeatureFlag.ARM]
-  ## Used to select method for requesting services from S-EL1.<BR><BR>
-  #   TRUE  - Selects FF-A calls for communication between S-EL0 and SPMC.<BR>
-  #   FALSE - Selects SVC calls for communication between S-EL0 and SPMC.<BR>
-  # @Prompt Enable FF-A support.
-  gArmTokenSpaceGuid.PcdFfaEnable|FALSE|BOOLEAN|0x0000005B
-
 [PcdsFixedAtBuild.common]
   gArmTokenSpaceGuid.PcdTrustzoneSupport|FALSE|BOOLEAN|0x00000006
 
@@ -298,6 +291,13 @@
   # not currently supported.
   gArmTokenSpaceGuid.PcdArmNonSecModeTransition|0x3c9|UINT32|0x0000003E
 
+  ## Used to select method for requesting services from S-EL1.<BR><BR>
+  #   1 - Selects FF-A calls for communication between S-EL0 and SPMC.<BR>
+  #   0 - Selects SVC calls for communication between S-EL0 and SPMC.<BR>
+  #   Using unsigned integer as boolean does not work on assembler.
+  # @Prompt Enable FF-A support.
+  gArmTokenSpaceGuid.PcdFfaEnable|0|UINT32|0x0000005B
+
 
 #
 # These PCDs are also defined as 'PcdsDynamic' or 'PcdsPatchableInModule' to be
diff --git a/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf 
b/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf
index ff20e5898051..3c733585f573 100644
--- a/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf
+++ b/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf
@@ -1,6 +1,6 @@
 #/** @file
 #
-#  Copyright (c) 2017 - 2021, Arm Limited. All rights reserved.<BR>
+#  Copyright (c) 2017 - 2023, Arm Limited. All rights reserved.
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -23,7 +23,7 @@
   ArmPkg/ArmPkg.dec
   MdePkg/MdePkg.dec
 
-[FeaturePcd.ARM, FeaturePcd.AARCH64]
+[FixedPcd]
   gArmTokenSpaceGuid.PcdFfaEnable
 
 [LibraryClasses]
diff --git 
a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf
 
b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf
index 75cfb98c0e75..dc6d3d859911 100644
--- 
a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf
+++ 
b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/StandaloneMmCoreEntryPoint.inf
@@ -1,7 +1,7 @@
 ## @file
 # Module entry point library for DXE core.
 #
-# Copyright (c) 2017 - 2021, Arm Ltd. All rights reserved.<BR>
+# Copyright (c) 2017 - 2023, Arm Ltd. All rights reserved.
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -51,7 +51,7 @@
   gEfiStandaloneMmNonSecureBufferGuid
   gEfiArmTfCpuDriverEpDescriptorGuid
 
-[FeaturePcd.ARM, FeaturePcd.AARCH64]
+[FixedPcd]
   gArmTokenSpaceGuid.PcdFfaEnable
 
 #
diff --git a/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.c 
b/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.c
index d55aff76201e..1a41a289ef17 100644
--- a/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.c
+++ b/ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.c
@@ -1,7 +1,7 @@
 /** @file
   File managing the MMU for ARMv8 architecture in S-EL0
 
-  Copyright (c) 2017 - 2021, Arm Limited. All rights reserved.<BR>
+  Copyright (c) 2017 - 2023, Arm Limited. All rights reserved.
   Copyright (c) 2021, Linaro Limited
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -54,7 +54,7 @@ SendMemoryPermissionRequest (
   }
 
   ArmCallSvc (SvcArgs);
-  if (FeaturePcdGet (PcdFfaEnable)) {
+  if (FixedPcdGet32 (PcdFfaEnable) != 0) {
     // Get/Set memory attributes is an atomic call, with
     // StandaloneMm at S-EL0 being the caller and the SPM
     // core being the callee. Thus there won't be a
@@ -163,7 +163,7 @@ GetMemoryPermissions (
   // Prepare the message parameters.
   // See [1], Section 13.5.5.1 MM_SP_MEMORY_ATTRIBUTES_GET_AARCH64.
   ZeroMem (&SvcArgs, sizeof (ARM_SVC_ARGS));
-  if (FeaturePcdGet (PcdFfaEnable)) {
+  if (FixedPcdGet32 (PcdFfaEnable) != 0) {
     // See [2], Section 10.2 FFA_MSG_SEND_DIRECT_REQ.
     SvcArgs.Arg0 = ARM_SVC_ID_FFA_MSG_SEND_DIRECT_REQ;
     SvcArgs.Arg1 = ARM_FFA_DESTINATION_ENDPOINT_ID;
@@ -218,7 +218,7 @@ RequestMemoryPermissionChange (
   // Prepare the message parameters.
   // See [1], Section 13.5.5.2 MM_SP_MEMORY_ATTRIBUTES_SET_AARCH64.
   ZeroMem (&SvcArgs, sizeof (ARM_SVC_ARGS));
-  if (FeaturePcdGet (PcdFfaEnable)) {
+  if (FixedPcdGet32 (PcdFfaEnable) != 0) {
     // See [2], Section 10.2 FFA_MSG_SEND_DIRECT_REQ.
     SvcArgs.Arg0 = ARM_SVC_ID_FFA_MSG_SEND_DIRECT_REQ;
     SvcArgs.Arg1 = ARM_FFA_DESTINATION_ENDPOINT_ID;
diff --git 
a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/StandaloneMmCoreEntryPoint.c
 
b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/StandaloneMmCoreEntryPoint.c
index 96de10405af8..5dd1d9747995 100644
--- 
a/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/StandaloneMmCoreEntryPoint.c
+++ 
b/StandaloneMmPkg/Library/StandaloneMmCoreEntryPoint/Arm/StandaloneMmCoreEntryPoint.c
@@ -2,7 +2,7 @@
   Entry point to the Standalone MM Foundation when initialized during the SEC
   phase on ARM platforms
 
-Copyright (c) 2017 - 2021, Arm Ltd. All rights reserved.<BR>
+Copyright (c) 2017 - 2023, Arm Ltd. All rights reserved.
 SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
@@ -140,7 +140,7 @@ DelegatedEventLoop (
     DEBUG ((DEBUG_INFO, "X6 :  0x%x\n", (UINT32)EventCompleteSvcArgs->Arg6));
     DEBUG ((DEBUG_INFO, "X7 :  0x%x\n", (UINT32)EventCompleteSvcArgs->Arg7));
 
-    FfaEnabled = FeaturePcdGet (PcdFfaEnable);
+    FfaEnabled = FixedPcdGet32 (PcdFfaEnable != 0);
     if (FfaEnabled) {
       Status = CpuDriverEntryPoint (
                  EventCompleteSvcArgs->Arg0,
@@ -225,7 +225,7 @@ GetSpmVersion (
   UINT32        SpmVersion;
   ARM_SVC_ARGS  SpmVersionArgs;
 
-  if (FeaturePcdGet (PcdFfaEnable)) {
+  if (FixedPcdGet32 (PcdFfaEnable) != 0) {
     SpmVersionArgs.Arg0  = ARM_SVC_ID_FFA_VERSION_AARCH32;
     SpmVersionArgs.Arg1  = mSpmMajorVerFfa << SPM_MAJOR_VER_SHIFT;
     SpmVersionArgs.Arg1 |= mSpmMinorVerFfa;
@@ -293,7 +293,7 @@ InitArmSvcArgs (
   OUT INT32         *Ret
   )
 {
-  if (FeaturePcdGet (PcdFfaEnable)) {
+  if (FixedPcdGet32 (PcdFfaEnable) != 0) {
     InitMmFoundationSvcArgs->Arg0 = ARM_SVC_ID_FFA_MSG_SEND_DIRECT_RESP;
     InitMmFoundationSvcArgs->Arg1 = 0;
     InitMmFoundationSvcArgs->Arg2 = 0;
-- 
2.34.1



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