1 files changed, 69 insertions, 0 deletions
diff --git a/src/dev/x86/SouthBridge.py b/src/dev/x86/SouthBridge.py
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+++ b/src/dev/x86/SouthBridge.py
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+# Copyright (c) 2008 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Gabe Black
+
+from m5.params import *
+from m5.proxy import *
+from Cmos import Cmos
+from I8254 import I8254
+from I8259 import I8259
+from PcSpeaker import PcSpeaker
+from m5.SimObject import SimObject
+
+def x86IOAddress(port):
+    IO_address_space_base = 0x8000000000000000
+    return IO_address_space_base + port;
+
+class SouthBridge(SimObject):
+    type = 'SouthBridge'
+    pio_latency = Param.Latency('1ns', "Programmed IO latency in simticks")
+    platform = Param.Platform(Parent.any, "Platform this device is part of")
+
+    _pic1 = I8259(pio_addr=x86IOAddress(0x20), mode='I8259Master')
+    _pic2 = I8259(pio_addr=x86IOAddress(0xA0), mode='I8259Slave')
+    _cmos = Cmos(pio_addr=x86IOAddress(0x70))
+    _pit = I8254(pio_addr=x86IOAddress(0x40))
+    _speaker = PcSpeaker(pio_addr=x86IOAddress(0x61))
+
+    pic1 = Param.I8259(_pic1, "Master PIC")
+    pic2 = Param.I8259(_pic2, "Slave PIC")
+    cmos = Param.Cmos(_cmos, "CMOS memory and real time clock device")
+    pit = Param.I8254(_pit, "Programmable interval timer")
+    speaker = Param.PcSpeaker(_speaker, "PC speaker")
+
+    def attachIO(self, bus):
+        # Make internal connections
+        self.pic2.output = self.pic1.pin(2)
+        self.cmos.int_pin = self.pic2.pin(0)
+        self.pit.int_pin = self.pic1.pin(0)
+        self.speaker.i8254 = self.pit
+        # Connect to the bus
+        self.cmos.pio = bus.port
+        self.pic1.pio = bus.port
+        self.pic2.pio = bus.port
+        self.pit.pio = bus.port
+        self.speaker.pio = bus.port