1 files changed, 48 insertions, 0 deletions
diff --git a/UefiCpuPkg/ResetVector/Vtf0/Ia16/Init16.asm b/UefiCpuPkg/ResetVector/Vtf0/Ia16/Init16.asm
new file mode 100644
index 0000000000..3d3d8b0267
--- /dev/null
+++ b/UefiCpuPkg/ResetVector/Vtf0/Ia16/Init16.asm
@@ -0,0 +1,48 @@
+;------------------------------------------------------------------------------
+; @file
+; 16-bit initialization code
+;
+; 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
+; 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
+