ArmPkg: Introduce ArmCpuLib to abstract ARM Cpu specific initialization

Every CPUs have their own initialization requirements.
This library allows to allows to abstract these initialization requirements
into the ARM Platform common components.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12448 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/Sec/SecEntryPoint.S

@@ -13,15 +13,11 @@
 
 #include <AutoGen.h>
 #include <AsmMacroIoLib.h>
-#include <Base.h>
-#include <Library/PcdLib.h>
-#include <Library/ArmPlatformLib.h>
+#include "SecInternal.h"
 
 .text
 .align 3
 
-GCC_ASM_EXPORT(_ModuleEntryPoint)
-
 GCC_ASM_IMPORT(CEntryPoint)
 GCC_ASM_IMPORT(ArmPlatformSecBootAction)
 GCC_ASM_IMPORT(ArmPlatformInitializeBootMemory)
@@ -30,13 +26,10 @@ GCC_ASM_IMPORT(ArmDisableCachesAndMmu)
 GCC_ASM_IMPORT(ArmWriteVBar)
 GCC_ASM_IMPORT(ArmReadMpidr)
 GCC_ASM_IMPORT(SecVectorTable)
-
-#if (FixedPcdGet32(PcdMPCoreSupport))
-GCC_ASM_IMPORT(ArmIsScuEnable)
-#endif
+GCC_ASM_IMPORT(ArmCpuSynchronizeWait)
+GCC_ASM_EXPORT(_ModuleEntryPoint)
 
 StartupAddr:        .word       ASM_PFX(CEntryPoint)
-SecVectorTableAddr: .word	ASM_PFX(SecVectorTable)
 
 ASM_PFX(_ModuleEntryPoint):
   // First ensure all interrupts are disabled
@@ -65,14 +58,11 @@ _IdentifyCpu:
   // Only the primary core initialize the memory (SMC)
   beq   _InitMem
   
-#if (FixedPcdGet32(PcdMPCoreSupport))
-  // ... The secondary cores wait for SCU to be enabled
-_WaitForEnabledScu:
-  bl    ASM_PFX(ArmIsScuEnable)
-  tst   r1, #1
-  beq   _WaitForEnabledScu
+_WaitInitMem:
+  mov   r0, #ARM_CPU_EVENT_BOOT_MEM_INIT
+  bl    ASM_PFX(ArmCpuSynchronizeWait)
+  // Now the Init Mem is initialized, we setup the secondary core stacks
   b     _SetupSecondaryCoreStack
-#endif
   
 _InitMem:
   // Initialize Init Boot Memory
@@ -110,7 +100,7 @@ _SetupSecondaryCoreStack:
 
   // Get the base of the stack for the secondary cores
   LoadConstantToReg (FixedPcdGet32(PcdCPUCoresSecStackBase), r1)
-  LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecPrimaryStackSize), r2)
+  LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecSecondaryStackSize), r2)
   add   r1, r1, r2
 
   // StackOffset = CorePos * StackSize