ArmPlatformPkg: Updated the stack setup to have the same geometry between the Secure and Normal World

Having a similar setup reduces the error during the MPCore stack setup.
The stack setup is described on this wikipage:
https://sourceforge.net/apps/mediawiki/tianocore/index.php?title=ArmPlatformPkg/Stack



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13058 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 18 insertions, 25 deletions

diff --git a/ArmPlatformPkg/Sec/SecEntryPoint.S b/ArmPlatformPkg/Sec/SecEntryPoint.S
index 6d3eb36531..42b18c40de 100644
--- a/ArmPlatformPkg/Sec/SecEntryPoint.S
+++ b/ArmPlatformPkg/Sec/SecEntryPoint.S
@@ -1,5 +1,5 @@
 //

-//  Copyright (c) 2011, ARM Limited. All rights reserved.

+//  Copyright (c) 2011-2012, 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         

@@ -53,8 +53,8 @@ _IdentifyCpu:
   and   r5, r0, r1

   

   // Is it the Primary Core ?

-  LoadConstantToReg (FixedPcdGet32(PcdArmPrimaryCore), r1)

-  cmp   r5, r1

+  LoadConstantToReg (FixedPcdGet32(PcdArmPrimaryCore), r3)

+  cmp   r5, r3

   // Only the primary core initialize the memory (SMC)

   beq   _InitMem

   

@@ -72,42 +72,35 @@ _InitMem:
   LoadConstantToReg (FixedPcdGet32(PcdArmPrimaryCore), r5)

 

 _SetupPrimaryCoreStack:

-  LoadConstantToReg (FixedPcdGet32(PcdCPUCoresSecStackBase), r2)

-  LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecPrimaryStackSize), r3)

-  // Calculate the Top of the Stack

-  add   r2, r2, r3

-  LoadConstantToReg (FixedPcdGet32(PcdSecGlobalVariableSize), r3)

+  // Get the top of the primary stacks (and the base of the secondary stacks)

+  LoadConstantToReg (FixedPcdGet32(PcdCPUCoresSecStackBase), r1)

+  LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecPrimaryStackSize), r2)

+  add   r1, r1, r2

+

+  LoadConstantToReg (FixedPcdGet32(PcdSecGlobalVariableSize), r2)

 

   // The reserved space for global variable must be 8-bytes aligned for pushing

   // 64-bit variable on the stack

-  SetPrimaryStack (r2, r3, r1)

-

-  // Set all the SEC global variables to 0

-  mov     r3, sp

-  mov     r1, #0x0

-_InitGlobals:

-  cmp     r3, r2

-  beq     _PrepareArguments

-  str     r1, [r3], #4

-  b       _InitGlobals

+  SetPrimaryStack (r1, r2, r3)

+  b     _PrepareArguments

 

 _SetupSecondaryCoreStack:

+  // Get the top of the primary stacks (and the base of the secondary stacks)

+  LoadConstantToReg (FixedPcdGet32(PcdCPUCoresSecStackBase), r1)

+  LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecPrimaryStackSize), r2)

+  add   r1, r1, r2

+

   // Get the Core Position (ClusterId * 4) + CoreId

-  GetCorePositionInStack(r0, r5, r1)

+  GetCorePositionInStack(r0, r5, r2)

   // The stack starts at the top of the stack region. Add '1' to the Core Position to get the top of the stack

   add   r0, r0, #1

 

-  // Get the base of the stack for the secondary cores

-  LoadConstantToReg (FixedPcdGet32(PcdCPUCoresSecStackBase), r1)

-  LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecSecondaryStackSize), r2)

-  add   r1, r1, r2

-

   // StackOffset = CorePos * StackSize

+  LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecSecondaryStackSize), r2)

   mul   r0, r0, r2

   // SP = StackBase + StackOffset

   add   sp, r1, r0

 

-

 _PrepareArguments:

   // Move sec startup address into a data register

   // Ensure we're jumping to FV version of the code (not boot remapped alias)