ArmPlatformPkg: Introduce ArmPlatformGlobalVariableLib

[mirror_edk2.git] / ArmPlatformPkg / PrePi / PrePi.c

diff --git a/ArmPlatformPkg/PrePi/PrePi.c b/ArmPlatformPkg/PrePi/PrePi.c
index a1c1c443f0cefb2fb4d95db31d68e43edb735569..9fd1a270856a9c4eb8bb67f8e8be41081cc54463 100755 (executable)
--- a/ArmPlatformPkg/PrePi/PrePi.c
+++ b/ArmPlatformPkg/PrePi/PrePi.c
@@ -15,19 +15,28 @@
 #include <PiPei.h>\r
 \r
 #include <Library/DebugAgentLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
 #include <Library/PrePiLib.h>\r
 #include <Library/IoLib.h>\r
 #include <Library/PrintLib.h>\r
 #include <Library/PeCoffGetEntryPointLib.h>\r
+#include <Library/PrePiHobListPointerLib.h>\r
 #include <Library/TimerLib.h>\r
 #include <Library/PerformanceLib.h>\r
 \r
 #include <Ppi/GuidedSectionExtraction.h>\r
 #include <Guid/LzmaDecompress.h>\r
+#include <Guid/ArmGlobalVariableHob.h>\r
 \r
 #include "PrePi.h"\r
 #include "LzmaDecompress.h"\r
 \r
+#define IS_XIP() ((FixedPcdGet32 (PcdFdBaseAddress) > (FixedPcdGet32 (PcdSystemMemoryBase) + FixedPcdGet32 (PcdSystemMemorySize))) || \\r
+                  ((FixedPcdGet32 (PcdFdBaseAddress) + FixedPcdGet32 (PcdFdSize)) < FixedPcdGet32 (PcdSystemMemoryBase)))\r
+\r
+// Not used when PrePi in run in XIP mode\r
+UINTN mGlobalVariableBase = 0;\r
+\r
 VOID\r
 PrePiCommonExceptionEntry (\r
   IN UINT32 Entry,\r
@@ -46,19 +55,41 @@ LzmaDecompressLibConstructor (
   VOID\r
   );\r
 \r
+VOID\r
+EFIAPI\r
+BuildGlobalVariableHob (\r
+  IN EFI_PHYSICAL_ADDRESS         GlobalVariableBase,\r
+  IN UINT32                       GlobalVariableSize\r
+  )\r
+{\r
+  ARM_HOB_GLOBAL_VARIABLE  *Hob;\r
+\r
+  Hob = CreateHob (EFI_HOB_TYPE_GUID_EXTENSION, sizeof (ARM_HOB_GLOBAL_VARIABLE));\r
+  ASSERT(Hob != NULL);\r
+\r
+  CopyGuid (&(Hob->Header.Name), &gArmGlobalVariableGuid);\r
+  Hob->GlobalVariableBase = GlobalVariableBase;\r
+  Hob->GlobalVariableSize = GlobalVariableSize;\r
+}\r
+\r
 VOID\r
 PrePiMain (\r
   IN  UINTN                     UefiMemoryBase,\r
+  IN  UINTN                     StacksBase,\r
+  IN  UINTN                     GlobalVariableBase,\r
   IN  UINT64                    StartTimeStamp\r
   )\r
 {\r
-  EFI_HOB_HANDOFF_INFO_TABLE**  PrePiHobBase;\r
+  EFI_HOB_HANDOFF_INFO_TABLE*   HobList;\r
   EFI_STATUS                    Status;\r
   CHAR8                         Buffer[100];\r
   UINTN                         CharCount;\r
-  UINTN                         UefiMemoryTop;\r
   UINTN                         StacksSize;\r
-  UINTN                         StacksBase;\r
+\r
+  // If ensure the FD is either part of the System Memory or totally outside of the System Memory (XIP)\r
+  ASSERT (IS_XIP() || \r
+          ((FixedPcdGet32 (PcdFdBaseAddress) >= FixedPcdGet32 (PcdSystemMemoryBase)) &&\r
+           ((FixedPcdGet32 (PcdFdBaseAddress) + FixedPcdGet32 (PcdFdSize)) <= (FixedPcdGet32 (PcdSystemMemoryBase) + FixedPcdGet32 (PcdSystemMemorySize)))));\r
 \r
   // Enable program flow prediction, if supported.\r
   ArmEnableBranchPrediction ();\r
@@ -76,30 +107,30 @@ PrePiMain (
   InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, NULL, NULL);\r
   SaveAndSetDebugTimerInterrupt (TRUE);\r
 \r
-  UefiMemoryTop = UefiMemoryBase + FixedPcdGet32 (PcdSystemMemoryUefiRegionSize);\r
-  StacksSize = PcdGet32 (PcdCPUCoresNonSecStackSize) * PcdGet32 (PcdMPCoreMaxCores);\r
-  StacksBase = UefiMemoryTop - StacksSize;\r
-\r
-  // Check the PcdCPUCoresNonSecStackBase match with the calculated StackBase\r
-  ASSERT (StacksBase == PcdGet32 (PcdCPUCoresNonSecStackBase));\r
+  if (!IS_XIP()) {\r
+    mGlobalVariableBase = GlobalVariableBase;\r
+  }\r
   \r
-  PrePiHobBase = (EFI_HOB_HANDOFF_INFO_TABLE**)(PcdGet32 (PcdCPUCoresNonSecStackBase) + (PcdGet32 (PcdCPUCoresNonSecStackSize) / 2) - PcdGet32 (PcdHobListPtrGlobalOffset));\r
-\r
   // Declare the PI/UEFI memory region\r
-  *PrePiHobBase = HobConstructor (\r
+  HobList = HobConstructor (\r
     (VOID*)UefiMemoryBase,\r
     FixedPcdGet32 (PcdSystemMemoryUefiRegionSize),\r
     (VOID*)UefiMemoryBase,\r
     (VOID*)StacksBase  // The top of the UEFI Memory is reserved for the stacks\r
     );\r
+  PrePeiSetHobList (HobList);\r
 \r
   // Initialize MMU and Memory HOBs (Resource Descriptor HOBs)\r
   Status = MemoryPeim (UefiMemoryBase, FixedPcdGet32 (PcdSystemMemoryUefiRegionSize));\r
   ASSERT_EFI_ERROR (Status);\r
 \r
   // Create the Stacks HOB (reserve the memory for all stacks)\r
+  StacksSize = PcdGet32 (PcdCPUCorePrimaryStackSize) + (FixedPcdGet32(PcdClusterCount) * 4 * FixedPcdGet32(PcdCPUCoreSecondaryStackSize));\r
   BuildStackHob (StacksBase, StacksSize);\r
 \r
+  // Declare the Global Variable HOB\r
+  BuildGlobalVariableHob (GlobalVariableBase, FixedPcdGet32 (PcdPeiGlobalVariableSize));\r
+\r
   // Set the Boot Mode\r
   SetBootMode (ArmPlatformGetBootMode ());\r
 \r
@@ -109,9 +140,6 @@ PrePiMain (
 \r
   BuildMemoryTypeInformationHob ();\r
 \r
-  InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, NULL, NULL);\r
-  SaveAndSetDebugTimerInterrupt (TRUE);\r
-\r
   // Now, the HOB List has been initialized, we can register performance information\r
   PERF_START (NULL, "PEI", NULL, StartTimeStamp);\r
 \r
@@ -138,13 +166,15 @@ PrePiMain (
 \r
 VOID\r
 CEntryPoint (\r
-  IN  UINTN                     CoreId,\r
-  IN  UINTN                     UefiMemoryBase\r
+  IN  UINTN                     MpId,\r
+  IN  UINTN                     UefiMemoryBase,\r
+  IN  UINTN                     StacksBase,\r
+  IN  UINTN                     GlobalVariableBase\r
   )\r
 {\r
   UINT64   StartTimeStamp;\r
  \r
-  if ((CoreId == ARM_PRIMARY_CORE) && PerformanceMeasurementEnabled ()) {\r
+  if (IS_PRIMARY_CORE(MpId) && PerformanceMeasurementEnabled ()) {\r
     // Initialize the Timer Library to setup the Timer HW controller\r
     TimerConstructor ();\r
     // We cannot call yet the PerformanceLib because the HOB List has not been initialized\r
@@ -170,11 +200,11 @@ CEntryPoint (
   ArmWriteVBar ((UINT32)PrePiVectorTable);\r
 \r
   // If not primary Jump to Secondary Main\r
-  if (CoreId == ARM_PRIMARY_CORE) {\r
+  if (IS_PRIMARY_CORE(MpId)) {\r
     // Goto primary Main.\r
-    PrimaryMain (UefiMemoryBase, StartTimeStamp);\r
+    PrimaryMain (UefiMemoryBase, StacksBase, GlobalVariableBase, StartTimeStamp);\r
   } else {\r
-    SecondaryMain (CoreId);\r
+    SecondaryMain (MpId);\r
   }\r
 \r
   // DXE Core should always load and never return\r