1 files changed, 104 insertions, 0 deletions
diff --git a/ArmPlatformPkg/Sec/SecEntryPoint.asm b/ArmPlatformPkg/Sec/SecEntryPoint.asm
new file mode 100644
index 0000000000..794a8c02d1
--- /dev/null
+++ b/ArmPlatformPkg/Sec/SecEntryPoint.asm
@@ -0,0 +1,104 @@
+//
+//  Copyright (c) 2011, ARM Limited. All rights reserved.
+//  
+//  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        
+//  http://opensource.org/licenses/bsd-license.php                                            
+//
+//  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+//  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+//
+//
+
+#include <AutoGen.h>
+#include <AsmMacroIoLib.h>
+#include <Base.h>
+#include <Library/PcdLib.h>
+#include <Library/ArmPlatformLib.h>
+
+  INCLUDE AsmMacroIoLib.inc
+  
+  IMPORT  CEntryPoint
+  IMPORT  ArmPlatformIsMemoryInitialized
+  IMPORT  ArmPlatformInitializeBootMemory
+  IMPORT  ArmDisableInterrupts
+  IMPORT  ArmDisableCachesAndMmu
+  IMPORT  ArmWriteVBar
+  IMPORT  ArmReadMpidr
+  IMPORT  SecVectorTable
+  EXPORT  _ModuleEntryPoint
+
+#if (FixedPcdGet32(PcdMPCoreSupport))
+  IMPORT  ArmIsScuEnable
+#endif
+  
+  PRESERVE8
+  AREA    SecEntryPoint, CODE, READONLY
+  
+StartupAddr        DCD      CEntryPoint
+
+_ModuleEntryPoint
+  //Set VBAR to the start of the exception vectors in Secure Mode
+  ldr   r0, =SecVectorTable
+  blx   ArmWriteVBar
+
+  // First ensure all interrupts are disabled
+  blx   ArmDisableInterrupts
+
+  // Ensure that the MMU and caches are off
+  blx   ArmDisableCachesAndMmu
+
+_IdentifyCpu 
+  // Identify CPU ID
+  bl    ArmReadMpidr
+  and   r5, r0, #0xf
+  
+  //get ID of this CPU in Multicore system
+  cmp   r5, #0
+  // Only the primary core initialize the memory (SMC)
+  beq   _InitMem
+  
+#if (FixedPcdGet32(PcdMPCoreSupport))
+  // ... The secondary cores wait for SCU to be enabled
+_WaitForEnabledScu
+  bl    ArmIsScuEnable
+  tst   r1, #1
+  beq   _WaitForEnabledScu
+  b     _SetupStack
+#endif
+  
+_InitMem
+  bl    ArmPlatformIsMemoryInitialized
+  bne   _SetupStack
+  
+  // Initialize Init Memory
+  bl    ArmPlatformInitializeBootMemory
+
+  // Only Primary CPU could run this line (the secondary cores have jumped from _IdentifyCpu to _SetupStack)
+  mov   r5, #0
+
+_SetupStack
+  // Setup Stack for the 4 CPU cores
+  //Read Stack Base address from PCD
+  LoadConstantToReg (FixedPcdGet32(PcdCPUCoresSecStackBase), r1)
+
+  // Read Stack size from PCD
+  LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecStackSize), r2)
+
+  // Calcuate Stack Pointer reg value using Stack size and CPU ID.
+  mov     r3,r5         // r3 = core_id
+  mul     r3,r3,r2      // r3 = core_id * stack_size = offset from the stack base
+  add     r3,r3,r1      // r3 = stack_base + offset
+  mov     sp, r3
+  
+  // Move sec startup address into a data register
+  // ensure we're jumping to FV version of the code (not boot remapped alias)
+  ldr   r3, StartupAddr
+  
+  // Jump to SEC C code
+  //    r0 = core_id
+  mov   r0, r5
+  blx   r3
+  
+  END