UefiCpuPkg/ResetVector/Vtf0/Ia16/Init16.asm

;------------------------------------------------------------------------------
; @file
; 16-bit initialization code
;
; Copyright (c) 2008 - 2009, Intel Corporation. All rights reserved.<BR>
; 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.
;
;------------------------------------------------------------------------------


BITS    16

;
; @param[out] DI    'BP' to indicate boot-strap processor
;
EarlyBspInitReal16:
    mov     di, 'BP'
    jmp     short Main16

;
; @param[out] DI    'AP' to indicate application processor
;
EarlyApInitReal16:
    mov     di, 'AP'
    jmp     short Main16

;
; Modified:  EAX
;
; @param[in]  EAX   Initial value of the EAX register (BIST: Built-in Self Test)
; @param[out] ESP   Initial value of the EAX register (BIST: Built-in Self Test)
;
EarlyInit16:
    ;
    ; ESP -  Initial value of the EAX register (BIST: Built-in Self Test)
    ;
    mov     esp, eax

    debugInitialize

    OneTimeCallRet EarlyInit16