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

1 files changed, 7 insertions, 12 deletions

diff --git a/OvmfPkg/ResetVector/Ia32/32FlatTo64Flat.asm b/OvmfPkg/ResetVector/Ia32/32FlatTo64Flat.asm
index f0528d4460..a97f9cc707 100644
--- a/OvmfPkg/ResetVector/Ia32/32FlatTo64Flat.asm
+++ b/OvmfPkg/ResetVector/Ia32/32FlatTo64Flat.asm
@@ -1,6 +1,8 @@
 ;------------------------------------------------------------------------------

+; @file

+; Transition from 32 bit flat protected mode into 64 bit flat protected mode

 ;

-; 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

@@ -9,18 +11,13 @@
 ; 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:

-;

-;   32FlatTo64Flat.asm

-;

-; Abstract:

-;

-;   Transition from 32 bit flat protected mode into 64 bit flat protected mode

-;

 ;------------------------------------------------------------------------------

 

 BITS    32

 

+;

+; Modified:  EAX

+;

 Transition32FlatTo64Flat:

 

     mov     eax, ((ADDR_OF_START_OF_RESET_CODE & ~0xfff) - 0x1000)

@@ -43,9 +40,7 @@ Transition32FlatTo64Flat:
 BITS    64

 jumpTo64BitAndLandHere:

 

-    writeToSerialPort '6'

-    writeToSerialPort '4'

-    writeToSerialPort ' '

+    debugShowPostCode POSTCODE_64BIT_MODE

 

     OneTimeCallRet Transition32FlatTo64Flat