MdeModulePkg/Library: commonize some duplicate code in ArmFfaLib

Some of code for handling Rx/Tx buffer is duplicate.
This patch commonize some of duplication routine used in
Rx/Tx buffer related functions.

Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>

5 files changed, 194 insertions, 225 deletions

diff --git a/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.c b/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.c
index 3423455..332628a 100644
--- a/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.c
+++ b/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.c
@@ -21,12 +21,15 @@
 #include <Library/BaseLib.h>

 #include <Library/BaseMemoryLib.h>

 #include <Library/DebugLib.h>

+#include <Library/HobLib.h>

 #include <Library/PcdLib.h>

 

 #include <IndustryStandard/ArmFfaSvc.h>

 #include <IndustryStandard/ArmFfaPartInfo.h>

 #include <IndustryStandard/ArmStdSmc.h>

 

+#include <Guid/ArmFfaRxTxBufferInfo.h>

+

 #include "ArmFfaCommon.h"

 

 BOOLEAN  gFfaSupported;

@@ -752,3 +755,146 @@ ArmFfaLibCommonInit (
 

   return EFI_SUCCESS;

 }

+

+/**

+  Get first Rx/Tx Buffer allocation hob.

+  If UseGuid is TRUE, BufferAddr and BufferSize parameters are ignored.

+

+  @param[in]  BufferAddr       Buffer address

+  @param[in]  BufferSize       Buffer Size

+  @param[in]  UseGuid          Find MemoryAllocationHob using gArmFfaRxTxBufferInfoGuid.

+

+  @retval     NULL             Not found

+  @retval     Other            MemoryAllocationHob related to Rx/Tx buffer

+

+**/

+EFI_HOB_MEMORY_ALLOCATION *

+EFIAPI

+GetRxTxBufferAllocationHob (

+  IN EFI_PHYSICAL_ADDRESS  BufferAddr,

+  IN UINT64                BufferSize,

+  IN BOOLEAN               UseGuid

+  )

+{

+  EFI_PEI_HOB_POINTERS       Hob;

+  EFI_HOB_MEMORY_ALLOCATION  *MemoryAllocationHob;

+  EFI_PHYSICAL_ADDRESS       MemoryBase;

+  UINT64                     MemorySize;

+

+  if (!UseGuid && (BufferAddr == 0x00)) {

+    return NULL;

+  }

+

+  MemoryAllocationHob = NULL;

+  Hob.Raw             = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);

+

+  while (Hob.Raw != NULL) {

+    if (Hob.MemoryAllocation->AllocDescriptor.MemoryType == EfiConventionalMemory) {

+      continue;

+    }

+

+    MemoryBase = Hob.MemoryAllocation->AllocDescriptor.MemoryBaseAddress;

+    MemorySize = Hob.MemoryAllocation->AllocDescriptor.MemoryLength;

+

+    if ((!UseGuid && (BufferAddr >= MemoryBase) &&

+         ((BufferAddr + BufferSize) <= (MemoryBase + MemorySize))) ||

+        (UseGuid && CompareGuid (

+                      &gArmFfaRxTxBufferInfoGuid,

+                      &Hob.MemoryAllocation->AllocDescriptor.Name

+                      )))

+    {

+      MemoryAllocationHob = (EFI_HOB_MEMORY_ALLOCATION *)Hob.Raw;

+      break;

+    }

+

+    Hob.Raw = GET_NEXT_HOB (Hob);

+    Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);

+  }

+

+  return MemoryAllocationHob;

+}

+

+/**

+  Get Rx/Tx buffer MinSizeAndAign and MaxSize

+

+  @param[out] MinSizeAndAlign  Minimum size of Buffer.

+

+  @retval EFI_SUCCESS

+  @retval EFI_UNSUPPORTED          Wrong min size received from SPMC

+  @retval EFI_INVALID_PARAMETER    Wrong buffer size

+  @retval Others                   Failure of ArmFfaLibGetFeatures()

+

+**/

+EFI_STATUS

+EFIAPI

+GetRxTxBufferMinSizeAndAlign (

+  OUT UINTN  *MinSizeAndAlign

+  )

+{

+  EFI_STATUS  Status;

+  UINTN       MinAndAlign;

+  UINTN       MaxSize;

+  UINTN       Property1;

+  UINTN       Property2;

+

+  Status = ArmFfaLibGetFeatures (

+             ARM_FID_FFA_RXTX_MAP,

+             FFA_RXTX_MAP_INPUT_PROPERTY_DEFAULT,

+             &Property1,

+             &Property2

+             );

+  if (EFI_ERROR (Status)) {

+    DEBUG ((

+      DEBUG_ERROR,

+      "%a: Failed to get RX/TX buffer property... Status: %r\n",

+      __func__,

+      Status

+      ));

+    return Status;

+  }

+

+  MinAndAlign =

+    ((Property1 >>

+      ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_SHIFT) &

+     ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_MASK);

+

+  switch (MinAndAlign) {

+    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_4K:

+      MinAndAlign = SIZE_4KB;

+      break;

+    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_16K:

+      MinAndAlign = SIZE_16KB;

+      break;

+    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_64K:

+      MinAndAlign = SIZE_64KB;

+      break;

+    default:

+      DEBUG ((DEBUG_ERROR, "%a: Invalid MinSizeAndAlign: 0x%x\n", __func__, MinAndAlign));

+      return EFI_UNSUPPORTED;

+  }

+

+  MaxSize =

+    (((Property1 >>

+       ARM_FFA_BUFFER_MAXSIZE_PAGE_COUNT_SHIFT) &

+      ARM_FFA_BUFFER_MAXSIZE_PAGE_COUNT_MASK));

+

+  MaxSize = ((MaxSize == 0) ? MAX_UINTN : (MaxSize * MinAndAlign));

+

+  if ((MinAndAlign > (PcdGet64 (PcdFfaTxRxPageCount) * EFI_PAGE_SIZE)) ||

+      (MaxSize < (PcdGet64 (PcdFfaTxRxPageCount) * EFI_PAGE_SIZE)))

+  {

+    DEBUG ((

+      DEBUG_ERROR,

+      "%a: Buffer is too small! MinSize: 0x%x, MaxSize: 0x%x, PageCount: %d\n",

+      __func__,

+      MinAndAlign,

+      MaxSize,

+      PcdGet64 (PcdFfaTxRxPageCount)

+      ));

+    return EFI_INVALID_PARAMETER;

+  }

+

+  *MinSizeAndAlign = MinAndAlign;

+

+  return EFI_SUCCESS;

+}

diff --git a/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.h b/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.h
index 5bb1b77..1994dd8 100644
--- a/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.h
+++ b/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.h
@@ -49,4 +49,41 @@ ArmFfaLibCommonInit (
   IN VOID

   );

 

+/**

+  Get first Rx/Tx Buffer allocation hob.

+  If UseGuid is TRUE, BufferAddr and BufferSize parameters are ignored.

+

+  @param[in]  BufferAddr       Buffer address

+  @param[in]  BufferSize       Buffer Size

+  @param[in]  UseGuid          Find MemoryAllocationHob using gArmFfaRxTxBufferInfoGuid.

+

+  @retval     NULL             Not found

+  @retval     Other            MemoryAllocationHob related to Rx/Tx buffer

+

+**/

+EFI_HOB_MEMORY_ALLOCATION *

+EFIAPI

+GetRxTxBufferAllocationHob (

+  IN EFI_PHYSICAL_ADDRESS  BufferAddr,

+  IN UINT64                BufferSize,

+  IN BOOLEAN               UseGuid

+  );

+

+/**

+  Get Rx/Tx buffer MinSizeAndAign and MaxSize

+

+  @param[out] MinSizeAndAlign  Minimum size of Buffer.

+

+  @retval EFI_SUCCESS

+  @retval EFI_UNSUPPORTED          Wrong min size received from SPMC

+  @retval EFI_INVALID_PARAMETER    Wrong buffer size

+  @retval Others                   Failure of ArmFfaLibGetFeatures()

+

+**/

+EFI_STATUS

+EFIAPI

+GetRxTxBufferMinSizeAndAlign (

+  OUT UINTN  *MinSizeAndAlign

+  );

+

 #endif

diff --git a/MdeModulePkg/Library/ArmFfaLib/ArmFfaRxTxMap.c b/MdeModulePkg/Library/ArmFfaLib/ArmFfaRxTxMap.c
index 528058e..6b75332 100644
--- a/MdeModulePkg/Library/ArmFfaLib/ArmFfaRxTxMap.c
+++ b/MdeModulePkg/Library/ArmFfaLib/ArmFfaRxTxMap.c
@@ -101,10 +101,7 @@ ArmFfaLibRxTxMap (
 {

   EFI_STATUS    Status;

   ARM_FFA_ARGS  FfaArgs;

-  UINTN         Property1;

-  UINTN         Property2;

   UINTN         MinSizeAndAlign;

-  UINTN         MaxSize;

   VOID          *Buffers;

   VOID          *TxBuffer;

   VOID          *RxBuffer;

@@ -122,65 +119,11 @@ ArmFfaLibRxTxMap (
     return EFI_ALREADY_STARTED;

   }

 

-  Status = ArmFfaLibGetFeatures (

-             ARM_FID_FFA_RXTX_MAP,

-             FFA_RXTX_MAP_INPUT_PROPERTY_DEFAULT,

-             &Property1,

-             &Property2

-             );

+  Status = GetRxTxBufferMinSizeAndAlign (&MinSizeAndAlign);

   if (EFI_ERROR (Status)) {

-    DEBUG ((

-      DEBUG_ERROR,

-      "%a: Failed to get RX/TX buffer property... Status: %r\n",

-      __func__,

-      Status

-      ));

     return Status;

   }

 

-  ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));

-

-  MinSizeAndAlign =

-    ((Property1 >>

-      ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_SHIFT) &

-     ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_MASK);

-

-  switch (MinSizeAndAlign) {

-    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_4K:

-      MinSizeAndAlign = SIZE_4KB;

-      break;

-    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_16K:

-      MinSizeAndAlign = SIZE_16KB;

-      break;

-    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_64K:

-      MinSizeAndAlign = SIZE_64KB;

-      break;

-    default:

-      DEBUG ((DEBUG_ERROR, "%a: Invalid MinSizeAndAlign: 0x%x\n", __func__, MinSizeAndAlign));

-      return EFI_UNSUPPORTED;

-  }

-

-  MaxSize =

-    (((Property1 >>

-       ARM_FFA_BUFFER_MAXSIZE_PAGE_COUNT_SHIFT) &

-      ARM_FFA_BUFFER_MAXSIZE_PAGE_COUNT_MASK));

-

-  MaxSize = ((MaxSize == 0) ? MAX_UINTN : (MaxSize * MinSizeAndAlign));

-

-  if ((MinSizeAndAlign > (PcdGet64 (PcdFfaTxRxPageCount) * EFI_PAGE_SIZE)) ||

-      (MaxSize < (PcdGet64 (PcdFfaTxRxPageCount) * EFI_PAGE_SIZE)))

-  {

-    DEBUG ((

-      DEBUG_ERROR,

-      "%a: Buffer is too small! MinSize: 0x%x, MaxSize: 0x%x, PageCount: %d\n",

-      __func__,

-      MinSizeAndAlign,

-      MaxSize,

-      PcdGet64 (PcdFfaTxRxPageCount)

-      ));

-    return EFI_INVALID_PARAMETER;

-  }

-

   Buffers = AllocateAlignedPages ((PcdGet64 (PcdFfaTxRxPageCount) * 2), MinSizeAndAlign);

   if (Buffers == NULL) {

     return EFI_OUT_OF_RESOURCES;

@@ -189,6 +132,7 @@ ArmFfaLibRxTxMap (
   TxBuffer = Buffers;

   RxBuffer = Buffers + BufferSize;

 

+  ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));

   FfaArgs.Arg0 = ARM_FID_FFA_RXTX_MAP;

   FfaArgs.Arg1 = (UINTN)TxBuffer;

   FfaArgs.Arg2 = (UINTN)RxBuffer;

@@ -307,47 +251,13 @@ FindRxTxBufferAllocationHob (
   IN BOOLEAN  UseGuid

   )

 {

-  EFI_PEI_HOB_POINTERS       Hob;

-  EFI_HOB_MEMORY_ALLOCATION  *MemoryAllocationHob;

-  EFI_PHYSICAL_ADDRESS       BufferBase;

-  UINT64                     BufferSize;

-  EFI_PHYSICAL_ADDRESS       MemoryBase;

-  UINT64                     MemorySize;

+  EFI_PHYSICAL_ADDRESS  BufferBase;

+  UINT64                BufferSize;

 

   BufferBase = (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdFfaTxBuffer);

   BufferSize = PcdGet64 (PcdFfaTxRxPageCount) * EFI_PAGE_SIZE * 2;

 

-  if (!UseGuid && (BufferBase == 0x00)) {

-    return NULL;

-  }

-

-  MemoryAllocationHob = NULL;

-  Hob.Raw             = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);

-

-  while (Hob.Raw != NULL) {

-    if (Hob.MemoryAllocation->AllocDescriptor.MemoryType == EfiConventionalMemory) {

-      continue;

-    }

-

-    MemoryBase = Hob.MemoryAllocation->AllocDescriptor.MemoryBaseAddress;

-    MemorySize = Hob.MemoryAllocation->AllocDescriptor.MemoryLength;

-

-    if ((!UseGuid && (BufferBase >= MemoryBase) &&

-         ((BufferBase + BufferSize) <= (MemoryBase + MemorySize))) ||

-        (UseGuid && CompareGuid (

-                      &gArmFfaRxTxBufferInfoGuid,

-                      &Hob.MemoryAllocation->AllocDescriptor.Name

-                      )))

-    {

-      MemoryAllocationHob = (EFI_HOB_MEMORY_ALLOCATION *)Hob.Raw;

-      break;

-    }

-

-    Hob.Raw = GET_NEXT_HOB (Hob);

-    Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);

-  } // while

-

-  return MemoryAllocationHob;

+  return GetRxTxBufferAllocationHob (BufferBase, BufferSize, UseGuid);

 }

 

 /**

@@ -371,8 +281,6 @@ RemapFfaRxTxBuffer (
   UINTN                      NewBufferBase;

   UINTN                      NewTxBuffer;

   UINTN                      NewRxBuffer;

-  UINTN                      Property1;

-  UINTN                      Property2;

   UINTN                      MinSizeAndAlign;

   EFI_HOB_MEMORY_ALLOCATION  *RxTxBufferAllocationHob;

 

@@ -381,41 +289,7 @@ RemapFfaRxTxBuffer (
     return EFI_NOT_FOUND;

   }

 

-  Status = ArmFfaLibGetFeatures (

-             ARM_FID_FFA_RXTX_MAP,

-             FFA_RXTX_MAP_INPUT_PROPERTY_DEFAULT,

-             &Property1,

-             &Property2

-             );

-  if (EFI_ERROR (Status)) {

-    DEBUG ((

-      DEBUG_ERROR,

-      "%a: Failed to get RX/TX buffer property... Status: %r\n",

-      __func__,

-      Status

-      ));

-    return Status;

-  }

-

-  MinSizeAndAlign =

-    ((Property1 >>

-      ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_SHIFT) &

-     ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_MASK);

-

-  switch (MinSizeAndAlign) {

-    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_4K:

-      MinSizeAndAlign = SIZE_4KB;

-      break;

-    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_16K:

-      MinSizeAndAlign = SIZE_16KB;

-      break;

-    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_64K:

-      MinSizeAndAlign = SIZE_64KB;

-      break;

-    default:

-      DEBUG ((DEBUG_ERROR, "%a: Invalid MinSizeAndAlign: 0x%x\n", __func__, MinSizeAndAlign));

-      return EFI_UNSUPPORTED;

-  }

+  Status = GetRxTxBufferMinSizeAndAlign (&MinSizeAndAlign);

 

   ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));

   FfaArgs.Arg0 = ARM_FID_FFA_RXTX_UNMAP;

diff --git a/MdeModulePkg/Library/ArmFfaLib/ArmFfaSecRxTxMap.c b/MdeModulePkg/Library/ArmFfaLib/ArmFfaSecRxTxMap.c
index fdc0dce..13f5215 100644
--- a/MdeModulePkg/Library/ArmFfaLib/ArmFfaSecRxTxMap.c
+++ b/MdeModulePkg/Library/ArmFfaLib/ArmFfaSecRxTxMap.c
@@ -297,47 +297,13 @@ FindRxTxBufferAllocationHob (
   IN BOOLEAN  UseGuid

   )

 {

-  EFI_PEI_HOB_POINTERS       Hob;

-  EFI_HOB_MEMORY_ALLOCATION  *MemoryAllocationHob;

-  EFI_PHYSICAL_ADDRESS       BufferBase;

-  UINT64                     BufferSize;

-  EFI_PHYSICAL_ADDRESS       MemoryBase;

-  UINT64                     MemorySize;

+  EFI_PHYSICAL_ADDRESS  BufferBase;

+  UINT64                BufferSize;

 

   BufferBase = (EFI_PHYSICAL_ADDRESS)((UINTN)mTxBuffer);

   BufferSize = PcdGet64 (PcdFfaTxRxPageCount) * EFI_PAGE_SIZE * 2;

 

-  if (!UseGuid && (BufferBase == 0x00)) {

-    return NULL;

-  }

-

-  MemoryAllocationHob = NULL;

-  Hob.Raw             = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);

-

-  while (Hob.Raw != NULL) {

-    if (Hob.MemoryAllocation->AllocDescriptor.MemoryType == EfiConventionalMemory) {

-      continue;

-    }

-

-    MemoryBase = Hob.MemoryAllocation->AllocDescriptor.MemoryBaseAddress;

-    MemorySize = Hob.MemoryAllocation->AllocDescriptor.MemoryLength;

-

-    if ((!UseGuid && (BufferBase >= MemoryBase) &&

-         ((BufferBase + BufferSize) <= (MemoryBase + MemorySize))) ||

-        (UseGuid && CompareGuid (

-                      &gArmFfaRxTxBufferInfoGuid,

-                      &Hob.MemoryAllocation->AllocDescriptor.Name

-                      )))

-    {

-      MemoryAllocationHob = (EFI_HOB_MEMORY_ALLOCATION *)Hob.Raw;

-      break;

-    }

-

-    Hob.Raw = GET_NEXT_HOB (Hob);

-    Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);

-  }

-

-  return MemoryAllocationHob;

+  return GetRxTxBufferAllocationHob (BufferBase, BufferSize, UseGuid);

 }

 

 /**

diff --git a/MdeModulePkg/Library/ArmFfaLib/ArmFfaStandaloneMmRxTxMap.c b/MdeModulePkg/Library/ArmFfaLib/ArmFfaStandaloneMmRxTxMap.c
index 2d087ed..c2c7f1b 100644
--- a/MdeModulePkg/Library/ArmFfaLib/ArmFfaStandaloneMmRxTxMap.c
+++ b/MdeModulePkg/Library/ArmFfaLib/ArmFfaStandaloneMmRxTxMap.c
@@ -112,10 +112,7 @@ ArmFfaLibRxTxMap (
 {

   EFI_STATUS    Status;

   ARM_FFA_ARGS  FfaArgs;

-  UINTN         Property1;

-  UINTN         Property2;

   UINTN         MinSizeAndAlign;

-  UINTN         MaxSize;

   VOID          *Buffers;

   VOID          *TxBuffer;

   VOID          *RxBuffer;

@@ -131,63 +128,11 @@ ArmFfaLibRxTxMap (
     return EFI_ALREADY_STARTED;

   }

 

-  Status = ArmFfaLibGetFeatures (

-             ARM_FID_FFA_RXTX_MAP,

-             FFA_RXTX_MAP_INPUT_PROPERTY_DEFAULT,

-             &Property1,

-             &Property2

-             );

+  Status = GetRxTxBufferMinSizeAndAlign (&MinSizeAndAlign);

   if (EFI_ERROR (Status)) {

-    DEBUG ((

-      DEBUG_ERROR,

-      "%a: Failed to get RX/TX buffer property... Status: %r\n",

-      __func__,

-      Status

-      ));

     return Status;

   }

 

-  ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));

-

-  MinSizeAndAlign =

-    ((Property1 >>

-      ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_SHIFT) &

-     ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_MASK);

-

-  switch (MinSizeAndAlign) {

-    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_4K:

-      MinSizeAndAlign = SIZE_4KB;

-      break;

-    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_16K:

-      MinSizeAndAlign = SIZE_16KB;

-      break;

-    case ARM_FFA_BUFFER_MINSIZE_AND_ALIGN_64K:

-      MinSizeAndAlign = SIZE_64KB;

-      break;

-    default:

-      DEBUG ((DEBUG_ERROR, "%a: Invalid MinSizeAndAlign: 0x%x\n", __func__, MinSizeAndAlign));

-      return EFI_UNSUPPORTED;

-  }

-

-  MaxSize = (Property1 >> ARM_FFA_BUFFER_MAXSIZE_PAGE_COUNT_SHIFT) &

-            ARM_FFA_BUFFER_MAXSIZE_PAGE_COUNT_MASK;

-

-  MaxSize = ((MaxSize == 0) ? MAX_UINTN : (MaxSize * MinSizeAndAlign));

-

-  if ((MinSizeAndAlign > (PcdGet64 (PcdFfaTxRxPageCount) * EFI_PAGE_SIZE)) ||

-      (MaxSize < (PcdGet64 (PcdFfaTxRxPageCount) * EFI_PAGE_SIZE)))

-  {

-    DEBUG ((

-      DEBUG_ERROR,

-      "%a: Buffer is too small! MinSize: 0x%x, MaxSize: 0x%x, PageCount: %d\n",

-      __func__,

-      MinSizeAndAlign,

-      MaxSize,

-      PcdGet64 (PcdFfaTxRxPageCount)

-      ));

-    return EFI_INVALID_PARAMETER;

-  }

-

   Buffers = AllocateAlignedPages ((PcdGet64 (PcdFfaTxRxPageCount) * 2), MinSizeAndAlign);

   if (Buffers == NULL) {

     return EFI_OUT_OF_RESOURCES;

@@ -197,6 +142,7 @@ ArmFfaLibRxTxMap (
   TxBuffer   = Buffers;

   RxBuffer   = Buffers + BufferSize;

 

+  ZeroMem (&FfaArgs, sizeof (ARM_FFA_ARGS));

   FfaArgs.Arg0 = ARM_FID_FFA_RXTX_MAP;

   FfaArgs.Arg1 = (UINTN)TxBuffer;

   FfaArgs.Arg2 = (UINTN)RxBuffer;