ArmPlatformPkg/Sec: Added support for Non Cold Boot Paths

For instance, in case of CpuHotPlug boot path the platform has already been
initialized. The CPU core should not execute any of the platform initialization
in this case.

Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13492 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/Sec/SecEntryPoint.asm

@@ -33,13 +33,16 @@
   
 StartupAddr        DCD      CEntryPoint
 
-_ModuleEntryPoint
+_ModuleEntryPoint FUNCTION
   // First ensure all interrupts are disabled
   blx   ArmDisableInterrupts
 
   // Ensure that the MMU and caches are off
   blx   ArmDisableCachesAndMmu
 
+  // By default, we are doing a cold boot
+  mov   r10, #ARM_SEC_COLD_BOOT
+
   // Jump to Platform Specific Boot Action function
   blx   ArmPlatformSecBootAction
 
@@ -61,6 +64,11 @@ _IdentifyCpu
   beq   _InitMem
   
 _WaitInitMem
+  // If we are not doing a cold boot in this case we should assume the Initial Memory to be already initialized
+  // Otherwise we have to wait the Primary Core to finish the initialization
+  cmp   r10, #ARM_SEC_COLD_BOOT
+  bne   _SetupSecondaryCoreStack
+
   // Wait for the primary core to initialize the initial memory (event: BOOT_MEM_INIT)
   bl    ArmCallWFE
   // Now the Init Mem is initialized, we setup the secondary core stacks
@@ -110,8 +118,11 @@ _PrepareArguments
   
   // Jump to SEC C code
   //    r0 = mp_id
+  //    r1 = Boot Mode
   mov   r0, r5
+  mov   r1, r10
   blx   r3
+  ENDFUNC
   
 _NeverReturn
   b _NeverReturn