Started working on an ArmEb package. GIC is ported. SEC is a start. Still missing memory map and DRAM init stuff. Hey but it compiles.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10090 6f19259b-4bc3-4df7-8a09-765794883524

ArmEbPkg/Sec/ModuleEntryPoint.S

@@ -0,0 +1,50 @@
+#------------------------------------------------------------------------------ 
+#
+# Copyright (c) 2008-2009 Apple Inc. All rights reserved.
+#
+# 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 <AsmMacroIoLib.h>
+#include <Library/PcdLib.h>
+
+.text
+.align 3
+
+.globl ASM_PFX(CEntryPoint)
+.globl ASM_PFX(_ModuleEntryPoint)
+
+ASM_PFX(_ModuleEntryPoint):
+
+  //
+  // Set stack based on PCD values. Need to do it this way to make C code work 
+  // when it runs from FLASH. 
+  //  
+  LoadConstantToReg (FixedPcdGet32(PcdPrePiStackBase) ,r2)    /* stack base arg2  */
+  LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3)    /* stack size arg3  */
+  add     r4, r2, r3
+
+  //Enter SVC mode and set up SVC stack pointer
+  mov     r0,#0x13|0x80|0x40
+  msr     CPSR_c,r0
+  sub     r4, r4, #0x400
+  mov     r13,r4
+
+  // Call C entry point
+  LoadConstantToReg (FixedPcdGet32(PcdMemorySize) ,r1)    /* memory size arg1          */
+  LoadConstantToReg (FixedPcdGet32(PcdMemoryBase) ,r0)    /* memory size arg0         */
+
+  blx      ASM_PFX(CEntryPoint) /* Assume C code is ARM      */
+
+ShouldNeverGetHere:
+  /* _CEntryPoint should never return */
+  b       ShouldNeverGetHere
+
+