[PATCH edk2-platforms v2 2/3] Platform/ARM/SgiPkg: Setup memory buffers for MmCommunicate

[Sughosh Ganu <sughosh.ganu@arm.com>]

Add memory regions for MmCommuncate buffers into the virtual memory
table.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
---
 Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf  | 4 ++++
 Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c | 8 +++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf
index 260be58fb38c..c0fcc8198201 100644
--- a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf
+++ b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLib.inf
@@ -25,6 +25,7 @@ [Packages]
   MdeModulePkg/MdeModulePkg.dec
   MdePkg/MdePkg.dec
   Platform/ARM/SgiPkg/SgiPlatform.dec
+  StandaloneMmPkg/StandaloneMmPkg.dec
 
 [LibraryClasses]
   ArmLib
@@ -62,6 +63,9 @@ [FixedPcd]
   gArmTokenSpaceGuid.PcdPciMmio64Base
   gArmTokenSpaceGuid.PcdPciMmio64Size
 
+  gArmTokenSpaceGuid.PcdMmBufferBase
+  gArmTokenSpaceGuid.PcdMmBufferSize
+
   gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress
 
 [Guids]
diff --git a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c
index 6ec2e8a7096d..60729e3c7158 100644
--- a/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c
+++ b/Platform/ARM/SgiPkg/Library/PlatformLib/PlatformLibMem.c
@@ -22,7 +22,7 @@
 #include <SgiPlatform.h>
 
 // Total number of descriptors, including the final "end-of-table" descriptor.
-#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS  12
+#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS  13
 
 /**
   Returns the Virtual Memory Map of the platform.
@@ -136,6 +136,12 @@ ArmPlatformGetVirtualMemoryMap (
                                                SIZE_1MB;
   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 
+ // MM Memory Space
+  VirtualMemoryTable[++Index].PhysicalBase  = PcdGet64 (PcdMmBufferBase);
+  VirtualMemoryTable[Index].VirtualBase     = PcdGet64 (PcdMmBufferBase);
+  VirtualMemoryTable[Index].Length          = PcdGet64 (PcdMmBufferSize);
+  VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED;
+
   // End of Table
   VirtualMemoryTable[++Index].PhysicalBase  = 0;
   VirtualMemoryTable[Index].VirtualBase     = 0;
-- 
2.7.4