OvmfPkg/Sec/Ia32/SecEntry.asm

   1       TITLE   SecEntry.asm
   2 ;------------------------------------------------------------------------------
   3 ;*
   4 ;*   Copyright 2006 - 2009, Intel Corporation
   5 ;*   All rights reserved. This program and the accompanying materials
   6 ;*   are licensed and made available under the terms and conditions of the BSD License
   7 ;*   which accompanies this distribution.  The full text of the license may be found at
   8 ;*   http://opensource.org/licenses/bsd-license.php
   9 ;*
  10 ;*   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 ;*   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 ;*
  13 ;*    CpuAsm.asm
  14 ;*
  15 ;*   Abstract:
  16 ;*
  17 ;------------------------------------------------------------------------------
  18
  19 #include "SecMain.h"
  20
  21     .686
  22     .model  flat,C
  23     .code
  24
  25 EXTERN SecCoreStartupWithStack:PROC
  26
  27 ;
  28 ;  SecCore Entry Point
  29 ;
  30 ;  Processor is in flat protected mode
  31 ;
  32 ;  @param  ESI  Pointer to SEC Core Entry Point (this function)
  33 ;  @param  EDI  Pointer to PEI Core Entry Point
  34 ;  @param  EBP  Pointer to the start of the Boot Firmware Volume
  35 ;
  36 ;  @return None
  37 ;
  38 ;
  39 _ModuleEntryPoint PROC PUBLIC
  40
  41     ;
  42     ; Load temporary stack top at very low memory.  The C code
  43     ; can reload to a better address.
  44     ;
  45     mov     eax, INITIAL_TOP_OF_STACK
  46     mov     esp, eax
  47     nop
  48
  49     ;
  50     ; Call into C code
  51     ;
  52     push    eax
  53     push    edi
  54     push    esi
  55     push    ebp
  56     call    SecCoreStartupWithStack
  57
  58 _ModuleEntryPoint ENDP
  59
  60 END