diff options
Diffstat (limited to 'IntelFrameworkModulePkg/Csm/LegacyBiosDxe/X64')
-rw-r--r-- | IntelFrameworkModulePkg/Csm/LegacyBiosDxe/X64/InterruptTable.S | 72 | ||||
-rw-r--r-- | IntelFrameworkModulePkg/Csm/LegacyBiosDxe/X64/InterruptTable.asm | 71 |
2 files changed, 143 insertions, 0 deletions
diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/X64/InterruptTable.S b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/X64/InterruptTable.S new file mode 100644 index 0000000000..95a0888863 --- /dev/null +++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/X64/InterruptTable.S @@ -0,0 +1,72 @@ +## @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. +# +## + +#text SEGMENT + + +#---------------------------------------------------------------------------- +# 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_GLOBAL ASM_PFX(InterruptRedirectionTemplate) +ASM_PFX(InterruptRedirectionTemplate): + int $0x08 + .byte 0x0cf # IRET + nop + int $0x09 + .byte 0x0cf # IRET + nop + int $0x0a + .byte 0x0cf # IRET + nop + int $0x0b + .byte 0x0cf # IRET + nop + int $0x0c + .byte 0x0cf # IRET + nop + int $0x0d + .byte 0x0cf # IRET + nop + int $0x0e + .byte 0x0cf # IRET + nop + int $0x0f + .byte 0x0cf # IRET + nop + +#END diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/X64/InterruptTable.asm b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/X64/InterruptTable.asm new file mode 100644 index 0000000000..750423e5b7 --- /dev/null +++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/X64/InterruptTable.asm @@ -0,0 +1,71 @@ +;; @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.
+;
+;;
+
+text SEGMENT
+
+;----------------------------------------------------------------------------
+; 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.
+;
+;----------------------------------------------------------------------------
+
+InterruptRedirectionTemplate PROC
+ int 08h
+ DB 0cfh ; IRET
+ nop
+ int 09h
+ DB 0cfh ; IRET
+ nop
+ int 0ah
+ DB 0cfh ; IRET
+ nop
+ int 0bh
+ DB 0cfh ; IRET
+ nop
+ int 0ch
+ DB 0cfh ; IRET
+ nop
+ int 0dh
+ DB 0cfh ; IRET
+ nop
+ int 0eh
+ DB 0cfh ; IRET
+ nop
+ int 0fh
+ DB 0cfh ; IRET
+ nop
+InterruptRedirectionTemplate ENDP
+
+END
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