104 lines
4.6 KiB
Python
104 lines
4.6 KiB
Python
# 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 I8042 import I8042
|
|
from I82094AA import I82094AA
|
|
from I8237 import I8237
|
|
from I8254 import I8254
|
|
from I8259 import I8259
|
|
from PcSpeaker import PcSpeaker
|
|
from X86IntPin import X86IntLine
|
|
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))
|
|
_dma1 = I8237(pio_addr=x86IOAddress(0x0))
|
|
_keyboard = I8042(data_port=x86IOAddress(0x60), \
|
|
command_port=x86IOAddress(0x64))
|
|
_pit = I8254(pio_addr=x86IOAddress(0x40))
|
|
_speaker = PcSpeaker(pio_addr=x86IOAddress(0x61))
|
|
_io_apic = I82094AA(pio_addr=0xFEC00000)
|
|
# This is to make sure the interrupt lines are instantiated. Don't use
|
|
# it for anything directly.
|
|
int_lines = VectorParam.X86IntLine([], "Interrupt lines")
|
|
|
|
pic1 = Param.I8259(_pic1, "Master PIC")
|
|
pic2 = Param.I8259(_pic2, "Slave PIC")
|
|
cmos = Param.Cmos(_cmos, "CMOS memory and real time clock device")
|
|
dma1 = Param.I8237(_dma1, "The first dma controller")
|
|
keyboard = Param.I8042(_keyboard, "The keyboard controller")
|
|
pit = Param.I8254(_pit, "Programmable interval timer")
|
|
speaker = Param.PcSpeaker(_speaker, "PC speaker")
|
|
io_apic = Param.I82094AA(_io_apic, "I/O APIC")
|
|
|
|
def connectPins(self, source, sink):
|
|
self.int_lines.append(X86IntLine(source=source, sink=sink))
|
|
|
|
def attachIO(self, bus):
|
|
# Route interupt signals
|
|
self.connectPins(self.pic1.output, self.io_apic.pin(0))
|
|
self.connectPins(self.pic2.output, self.pic1.pin(2))
|
|
self.connectPins(self.cmos.int_pin, self.pic2.pin(0))
|
|
self.connectPins(self.pit.int_pin, self.pic1.pin(0))
|
|
self.connectPins(self.pit.int_pin, self.io_apic.pin(2))
|
|
# self.connectPins(self.keyboard.keyboard_int_pin,
|
|
# self.pic1.pin(1))
|
|
self.connectPins(self.keyboard.keyboard_int_pin,
|
|
self.io_apic.pin(1))
|
|
# self.connectPins(self.keyboard.mouse_int_pin,
|
|
# self.pic2.pin(4))
|
|
self.connectPins(self.keyboard.mouse_int_pin,
|
|
self.io_apic.pin(12))
|
|
# Tell the devices about each other
|
|
self.pic1.slave = self.pic2
|
|
self.speaker.i8254 = self.pit
|
|
self.io_apic.external_int_pic = self.pic1
|
|
# Connect to the bus
|
|
self.cmos.pio = bus.port
|
|
self.dma1.pio = bus.port
|
|
self.keyboard.pio = bus.port
|
|
self.pic1.pio = bus.port
|
|
self.pic2.pio = bus.port
|
|
self.pit.pio = bus.port
|
|
self.speaker.pio = bus.port
|
|
self.io_apic.pio = bus.port
|
|
self.io_apic.int_port = bus.port
|