1 files changed, 67 insertions, 0 deletions
diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/IA32/InterruptTable.S b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/IA32/InterruptTable.S
new file mode 100644
index 0000000000..a785256052
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+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/IA32/InterruptTable.S
@@ -0,0 +1,67 @@
+## @file
+#  Interrupt Redirection Template
+#
+# Copyright (c) 2006, 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.
+#
+##
+
+ASM_GLOBAL ASM_PFX(InterruptRedirectionTemplate)
+
+#----------------------------------------------------------------------------
+# Procedure:    InterruptRedirectionTemplate: Redirects interrupts 0x68-0x6F 
+#
+# Input:        None
+#
+# Output:       None
+#
+# Prototype:    VOID
+#               InterruptRedirectionTemplate (  
+#                                VOID
+#                                );
+#
+# Saves:        None
+#
+# Modified:     None
+#
+# Description:  Contains the code that is copied into low memory (below 640K).
+#               This code reflects interrupts 0x68-0x6f to interrupts 0x08-0x0f.
+#               This template must be copied into low memory, and the IDT entries
+#               0x68-0x6F must be point to the low memory copy of this code.  Each
+#               entry is 4 bytes long, so IDT entries 0x68-0x6F can be easily 
+#               computed.
+#
+#----------------------------------------------------------------------------
+ASM_PFX(InterruptRedirectionTemplate):
+  int     $0x8
+  .byte   0xcf
+  nop
+  int     $0x9
+  .byte   0xcf
+  nop
+  int     $0xa
+  .byte   0xcf
+  nop
+  int     $0xb
+  .byte   0xcf
+  nop
+  int     $0xc
+  .byte   0xcf
+  nop
+  int     $0xd
+  .byte   0xcf
+  nop
+  int     $0xe
+  .byte   0xcf
+  nop
+  int     $0xf
+  .byte   0xcf
+  nop