Add initial version of Open Virtual Machine Firmware (OVMF) platform.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8398 6f19259b-4bc3-4df7-8a09-765794883524

OvmfPkg/Sec/X64/SecEntry.S

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+#      TITLE   SecEntry.asm
+
+#------------------------------------------------------------------------------
+#*
+#*   Copyright 2006 - 2009, Intel Corporation
+#*   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.
+#*
+#*    CpuAsm.asm
+#*
+#*   Abstract:
+#*
+#------------------------------------------------------------------------------
+
+
+#include "SecMain.h"
+
+#EXTERN ASM_PFX(SecCoreStartupWithStack)
+
+#
+#  SecCore Entry Point
+#
+#  Processor is in flat protected mode
+#
+#  @param  ESI  Pointer to SEC Core Entry Point (this function)
+#  @param  EDI  Pointer to PEI Core Entry Point
+#  @param  EBP  Pointer to the start of the Boot Firmware Volume
+#
+#  @return None
+#
+#
+.intel_syntax
+ASM_GLOBAL ASM_PFX(_ModuleEntryPoint)
+ASM_PFX(_ModuleEntryPoint):
+
+    #
+    # Load temporary stack top at very low memory.  The C code
+    # can reload to a better address.
+    #
+    mov     %rsp, INITIAL_TOP_OF_STACK
+    nop
+
+    #
+    # Setup parameters and call SecCoreStartupWithStack
+    #   rcx: BootFirmwareVolumePtr
+    #   rdx: SecCoreEntryPoint
+    #   r8:  PeiCoreEntryPoint
+    #   r9:  TopOfCurrentStack
+    #
+    mov     %rcx, %rbp
+    mov     %rdx, %rsi
+    mov     %r8, %rdi
+    mov     %r9, %rsp
+    call    ASM_PFX(SecCoreStartupWithStack)
+