OVMF ResetVector: Modify interface with SEC module

Previously it was:
  ESI/RSI - SEC Core entry point
  EDI/RDI - PEI Core entry point
  EBP/RBP - Start of BFV

Now it is:
  RAX/EAX  Initial value of the EAX register
           (BIST: Built-in Self Test)
  DI       'BP': boot-strap processor, or
           'AP': application processor
  RBP/EBP  Address of Boot Firmware Volume (BFV)

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9571 6f19259b-4bc3-4df7-8a09-765794883524

OvmfPkg/ResetVector/Ia16/ResetVectorVtf0.asm

@@ -1,6 +1,8 @@
 ;------------------------------------------------------------------------------
+; @file
+; First code exectuted by processor after resetting.
 ;
-; Copyright (c) 2008, Intel Corporation
+; Copyright (c) 2008 - 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
@@ -9,28 +11,25 @@
 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 ;
-; Module Name:
-;
-;   Reset-16Bit-vft0.asm
-;
-; Abstract:
-;
-;   First code exectuted by processor after resetting.
-;
 ;------------------------------------------------------------------------------
 
-BITS	16
+BITS    16
 
-earlyInit_Real16:
+ALIGN   16
 
-	jmp	real16InitSerialPort
-real16SerialPortInitReturn:
+applicationProcessorEntryPoint:
+;
+; Application Processors entry point
+;
+; GenFv generates code aligned on a 4k boundary which will jump to this
+; location.  (0xffffffe0)  This allows the Local APIC Startup IPI to be
+; used to wake up the application processors.
+;
+    jmp     short EarlyApInitReal16
 
-	jmp	to32BitFlat
+ALIGN   8
 
-ALIGN	16
-
-	DD	0, 0, 0
+    DD      0
 
 ;
 ; The VTF signature
@@ -39,16 +38,20 @@ ALIGN	16
 ; any fixups.
 ;
 vtfSignature:
-	DB	'V', 'T', 'F', 0
+    DB      'V', 'T', 'F', 0
 
+ALIGN   16
+
+resetVector:
 ;
 ; Reset Vector
 ;
 ; This is where the processor will begin execution
 ;
-	jmp	short earlyInit_Real16
+    wbinvd
+    jmp     short EarlyBspInitReal16
 
-ALIGN	16
+ALIGN   16
 
 fourGigabytes: