From e174239bd8aa389fb39d8600b22dc1095a0dccf2 Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Sun, 19 Apr 2009 04:15:06 -0700
Subject: X86: Mask the PIC at startup to avoid a glitch which causes an NMI.

---
 src/dev/x86/i8259.hh | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

(limited to 'src/dev/x86/i8259.hh')

diff --git a/src/dev/x86/i8259.hh b/src/dev/x86/i8259.hh
index dfb56646a..a9c5baa8c 100644
--- a/src/dev/x86/i8259.hh
+++ b/src/dev/x86/i8259.hh
@@ -39,8 +39,6 @@
 namespace X86ISA
 {
 
-class I82094AA;
-
 class I8259 : public BasicPioDevice, public IntDev
 {
   protected:
@@ -94,6 +92,18 @@ class I8259 : public BasicPioDevice, public IntDev
     Tick read(PacketPtr pkt);
     Tick write(PacketPtr pkt);
 
+    void
+    maskAll()
+    {
+        IMR = 0xFF;
+    }
+
+    void
+    unmaskAll()
+    {
+        IMR = 0x00;
+    }
+
     void signalInterrupt(int line);
     void raiseInterruptPin(int number);
     void lowerInterruptPin(int number);
-- 
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