1# Copyright (c) 2008 The Regents of The University of Michigan 2# All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions are 6# met: redistributions of source code must retain the above copyright 7# notice, this list of conditions and the following disclaimer; 8# redistributions in binary form must reproduce the above copyright --- 15 unchanged lines hidden (view full) --- 24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26# 27# Authors: Gabe Black 28 29from m5.params import * 30from m5.proxy import * 31from Cmos import Cmos |
32from I82094AA import I82094AA |
33from I8254 import I8254 34from I8259 import I8259 35from PcSpeaker import PcSpeaker 36from m5.SimObject import SimObject 37 38def x86IOAddress(port): 39 IO_address_space_base = 0x8000000000000000 40 return IO_address_space_base + port; 41 42class SouthBridge(SimObject): 43 type = 'SouthBridge' 44 pio_latency = Param.Latency('1ns', "Programmed IO latency in simticks") 45 platform = Param.Platform(Parent.any, "Platform this device is part of") 46 47 _pic1 = I8259(pio_addr=x86IOAddress(0x20), mode='I8259Master') 48 _pic2 = I8259(pio_addr=x86IOAddress(0xA0), mode='I8259Slave') 49 _cmos = Cmos(pio_addr=x86IOAddress(0x70)) 50 _pit = I8254(pio_addr=x86IOAddress(0x40)) 51 _speaker = PcSpeaker(pio_addr=x86IOAddress(0x61)) |
52 _io_apic = I82094AA(pio_addr=0xFEC00000) |
53 54 pic1 = Param.I8259(_pic1, "Master PIC") 55 pic2 = Param.I8259(_pic2, "Slave PIC") 56 cmos = Param.Cmos(_cmos, "CMOS memory and real time clock device") 57 pit = Param.I8254(_pit, "Programmable interval timer") 58 speaker = Param.PcSpeaker(_speaker, "PC speaker") |
59 io_apic = Param.I82094AA(_io_apic, "I/O APIC") |
60 61 def attachIO(self, bus): 62 # Make internal connections |
63 self.pic1.output = self.io_apic.pin(0) |
64 self.pic2.output = self.pic1.pin(2) 65 self.cmos.int_pin = self.pic2.pin(0) 66 self.pit.int_pin = self.pic1.pin(0) 67 self.speaker.i8254 = self.pit 68 # Connect to the bus 69 self.cmos.pio = bus.port 70 self.pic1.pio = bus.port 71 self.pic2.pio = bus.port 72 self.pit.pio = bus.port 73 self.speaker.pio = bus.port |
74 self.io_apic.pio = bus.port |