ArmPkg,ArmPlatformPkg: Allow dynamic PCDs for memory base and size

This changes the definition and a bunch of references to
gArmTokenSpaceGuid.PcdSystemMemoryBase and
gArmTokenSpaceGuid.PcdSystemMemorySize so they can be declared as dynamic PCDs
by the platform. Also, move the non-SEC call to
ArmPlatformInitializeSystemMemory() earlier, so a platform has a chance to set
these PCDs before they are first referenced.

The purpose is allowing dynamically instantiated virtual machines to declare
the system memory by passing a device tree.

Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16079 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/ArmPkg.dec

@@ -105,12 +105,6 @@
   gArmTokenSpaceGuid.PcdHypFvBaseAddress|0|UINT32|0x0000003C
   gArmTokenSpaceGuid.PcdHypFvSize|0|UINT32|0x0000003D
 
-  # System Memory (DRAM): These PCDs define the region of in-built system memory
-  # Some platforms can get DRAM extensions, these additional regions will be declared
-  # to UEFI by ArmPlatformLib
-  gArmTokenSpaceGuid.PcdSystemMemoryBase|0|UINT64|0x00000029
-  gArmTokenSpaceGuid.PcdSystemMemorySize|0|UINT64|0x0000002A
-
   # Use ClusterId + CoreId to identify the PrimaryCore
   gArmTokenSpaceGuid.PcdArmPrimaryCoreMask|0xF03|UINT32|0x00000031
   # The Primary Core is ClusterId[0] & CoreId[0]
@@ -214,6 +208,12 @@
 # context of virtual machine.
 #
 [PcdsFixedAtBuild.common, PcdsDynamic.common]
+  # System Memory (DRAM): These PCDs define the region of in-built system memory
+  # Some platforms can get DRAM extensions, these additional regions will be declared
+  # to UEFI by ArmPlatformLib
+  gArmTokenSpaceGuid.PcdSystemMemoryBase|0|UINT64|0x00000029
+  gArmTokenSpaceGuid.PcdSystemMemorySize|0|UINT64|0x0000002A
+
   #
   # ARM Architectural Timer
   #

ArmPkg/Library/BdsLib/BdsLib.inf

@@ -78,10 +78,11 @@
 [FeaturePcd]
   gArmTokenSpaceGuid.PcdArmLinuxSpinTable
 
-[FixedPcd]
+[Pcd]
   gArmTokenSpaceGuid.PcdSystemMemoryBase
   gArmTokenSpaceGuid.PcdSystemMemorySize
 
+[FixedPcd]
   gArmTokenSpaceGuid.PcdArmMachineType
   gArmTokenSpaceGuid.PcdArmLinuxFdtMaxOffset
   gArmTokenSpaceGuid.PcdArmLinuxFdtAlignment

ArmPlatformPkg/Library/ArmPlatformGlobalVariableLib/PrePi/PrePiArmPlatformGlobalVariableLib.inf

@@ -37,9 +37,10 @@
   gArmTokenSpaceGuid.PcdFdBaseAddress
   gArmTokenSpaceGuid.PcdFdSize
 
-  gArmTokenSpaceGuid.PcdSystemMemoryBase
-  gArmTokenSpaceGuid.PcdSystemMemorySize
-
   gArmPlatformTokenSpaceGuid.PcdCPUCorePrimaryStackSize
   gArmPlatformTokenSpaceGuid.PcdPeiGlobalVariableSize
 
+[Pcd]
+  gArmTokenSpaceGuid.PcdSystemMemoryBase
+  gArmTokenSpaceGuid.PcdSystemMemorySize
+

ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.inf

@@ -1,6 +1,6 @@
 #/** @file
 #
-#  Copyright (c) 2011, ARM Ltd. All rights reserved.<BR>
+#  Copyright (c) 2011-2014, ARM Ltd. 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
@@ -39,8 +39,6 @@
 [Guids]
   gEfiMemoryTypeInformationGuid
 
-[Ppis]
-
 [FeaturePcd]
   gEmbeddedTokenSpaceGuid.PcdPrePiProduceMemoryTypeInformationHob
 
@@ -48,8 +46,6 @@
   gArmTokenSpaceGuid.PcdFdBaseAddress
   gArmTokenSpaceGuid.PcdFdSize
 
-  gArmTokenSpaceGuid.PcdSystemMemoryBase
-  gArmTokenSpaceGuid.PcdSystemMemorySize
   gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize
 
   gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiACPIReclaimMemory
@@ -62,5 +58,9 @@
   gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiLoaderCode
   gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiLoaderData
 
-[depex]
+[Pcd]
+  gArmTokenSpaceGuid.PcdSystemMemoryBase
+  gArmTokenSpaceGuid.PcdSystemMemorySize
+
+[Depex]
   TRUE

ArmPlatformPkg/MemoryInitPei/MemoryInitPeim.c

@@ -103,14 +103,6 @@ InitializeMemory (
 
   DEBUG ((EFI_D_ERROR, "Memory Init PEIM Loaded\n"));
 
-  // Ensure PcdSystemMemorySize has been set
-  ASSERT (FixedPcdGet64 (PcdSystemMemorySize) != 0);
-
-  SystemMemoryBase = (UINTN)FixedPcdGet64 (PcdSystemMemoryBase);
-  SystemMemoryTop = SystemMemoryBase + (UINTN)FixedPcdGet64 (PcdSystemMemorySize);
-  FdBase = (UINTN)PcdGet32 (PcdFdBaseAddress);
-  FdTop = FdBase + (UINTN)PcdGet32 (PcdFdSize);
-
   //
   // Initialize the System Memory (DRAM)
   //
@@ -119,6 +111,14 @@ InitializeMemory (
     ArmPlatformInitializeSystemMemory ();
   }
 
+  // Ensure PcdSystemMemorySize has been set
+  ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);
+
+  SystemMemoryBase = (UINTN)PcdGet64 (PcdSystemMemoryBase);
+  SystemMemoryTop = SystemMemoryBase + (UINTN)PcdGet64 (PcdSystemMemorySize);
+  FdBase = (UINTN)PcdGet32 (PcdFdBaseAddress);
+  FdTop = FdBase + (UINTN)PcdGet32 (PcdFdSize);
+
   //
   // Declare the UEFI memory to PEI
   //

ArmPlatformPkg/MemoryInitPei/MemoryInitPeim.inf

@@ -1,6 +1,6 @@
 #/** @file
 #
-#  Copyright (c) 2011, ARM Ltd. All rights reserved.<BR>
+#  Copyright (c) 2011-2014, ARM Ltd. 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
@@ -55,8 +55,6 @@
   gArmTokenSpaceGuid.PcdFdBaseAddress
   gArmTokenSpaceGuid.PcdFdSize
 
-  gArmTokenSpaceGuid.PcdSystemMemoryBase
-  gArmTokenSpaceGuid.PcdSystemMemorySize
   gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize
 
   gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiACPIReclaimMemory
@@ -69,5 +67,9 @@
   gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiLoaderCode
   gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiLoaderData
 
+[Pcd]
+  gArmTokenSpaceGuid.PcdSystemMemoryBase
+  gArmTokenSpaceGuid.PcdSystemMemorySize
+
 [Depex]
   TRUE

ArmPlatformPkg/PrePi/PeiUniCore.inf

@@ -88,8 +88,6 @@
 
   gArmPlatformTokenSpaceGuid.PcdPeiGlobalVariableSize
 
-  gArmTokenSpaceGuid.PcdSystemMemoryBase
-  gArmTokenSpaceGuid.PcdSystemMemorySize
   gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize
 
   gArmPlatformTokenSpaceGuid.PcdCoreCount
@@ -106,3 +104,7 @@
   gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiBootServicesData
   gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiLoaderCode
   gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiLoaderData
+
+[Pcd]
+  gArmTokenSpaceGuid.PcdSystemMemoryBase
+  gArmTokenSpaceGuid.PcdSystemMemorySize