1 files changed, 63 insertions, 0 deletions
diff --git a/OvmfPkg/ResetVector/JumpToSec.asm b/OvmfPkg/ResetVector/JumpToSec.asm
new file mode 100644
index 0000000000..d7442f0e9d
--- /dev/null
+++ b/OvmfPkg/ResetVector/JumpToSec.asm
@@ -0,0 +1,63 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2008, 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.
+;
+; Module Name:
+;
+;   JumpToSec.asm
+;
+; Abstract:
+;
+;   Jump from the reset vector binary to SEC
+;
+;------------------------------------------------------------------------------
+
+BITS    32
+
+TransitionFrom16RealTo32FlatComplete:
+
+    OneTimeCall Flat32SearchForBfvBase
+
+    OneTimeCall Flat32SearchForSecAndPeiEntries
+
+    ;
+    ; ESI - SEC Core entry point
+    ; EDI - PEI Core entry point
+    ; EBP - Start of BFV
+    ;
+    ; Jump to SEC Core entry point
+    ;
+
+%ifdef ARCH_IA32
+
+    jmp     esi
+
+%else
+
+    OneTimeCall Transition32FlatTo64Flat
+BITS    64
+
+    mov     rax, 0x00000000ffffffff
+    and     rsi, rax
+    and     rdi, rax
+    and     rbp, rax
+    ;
+    ; RSI - SEC Core entry point
+    ; RDI - PEI Core entry point
+    ; RBP - Start of BFV
+    ;
+    ; Jump to SEC Core entry point
+    ;
+
+    jmp     rsi
+
+%endif
+
+