1 files changed, 42 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/ResetVector/Vtf0/Ia16/Init16.asm b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/ResetVector/Vtf0/Ia16/Init16.asm
new file mode 100644
index 00000000..9626ca0a
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/ResetVector/Vtf0/Ia16/Init16.asm
@@ -0,0 +1,42 @@
+;------------------------------------------------------------------------------
+; @file
+; 16-bit initialization code
+;
+; Copyright (c) 2008 - 2009, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+;------------------------------------------------------------------------------
+
+
+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
+