199ff5e677
Implements the Device Tree generating code for devices required by the RealView VExpress_GEM5_V1 platform Change-Id: I14244b2f3c028cbddba3c23ce7433fe3b301a0e8 Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/5965 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
106 lines
4.5 KiB
Python
106 lines
4.5 KiB
Python
# Copyright (c) 2012-2016 ARM Limited
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# All rights reserved.
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Copyright (c) 2005-2007 The Regents of The University of Michigan
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Nathan Binkert
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# Glenn Bergmans
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from m5.params import *
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from m5.proxy import *
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from m5.util.fdthelper import *
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from MemObject import MemObject
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class PioDevice(MemObject):
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type = 'PioDevice'
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cxx_header = "dev/io_device.hh"
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abstract = True
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pio = SlavePort("Programmed I/O port")
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system = Param.System(Parent.any, "System this device is part of")
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def generateBasicPioDeviceNode(self, state, name, pio_addr,
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size, interrupts = None):
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node = FdtNode("%s@%x" % (name, long(pio_addr)))
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node.append(FdtPropertyWords("reg",
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state.addrCells(pio_addr) +
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state.sizeCells(size) ))
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if interrupts:
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if any([i < 32 for i in interrupts]):
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raise(("Interrupt number smaller than 32 "+
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" in PioDevice %s") % name)
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# subtracting 32 because Linux assumes that SPIs start at 0, while
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# gem5 uses the internal GIC numbering (SPIs start at 32)
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node.append(FdtPropertyWords("interrupts", sum(
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[[0, i - 32, 4] for i in interrupts], []) ))
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return node
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class BasicPioDevice(PioDevice):
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type = 'BasicPioDevice'
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cxx_header = "dev/io_device.hh"
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abstract = True
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pio_addr = Param.Addr("Device Address")
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pio_latency = Param.Latency('100ns', "Programmed IO latency")
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class DmaDevice(PioDevice):
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type = 'DmaDevice'
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cxx_header = "dev/dma_device.hh"
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abstract = True
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dma = MasterPort("DMA port")
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class IsaFake(BasicPioDevice):
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type = 'IsaFake'
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cxx_header = "dev/isa_fake.hh"
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pio_size = Param.Addr(0x8, "Size of address range")
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ret_data8 = Param.UInt8(0xFF, "Default data to return")
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ret_data16 = Param.UInt16(0xFFFF, "Default data to return")
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ret_data32 = Param.UInt32(0xFFFFFFFF, "Default data to return")
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ret_data64 = Param.UInt64(0xFFFFFFFFFFFFFFFF, "Default data to return")
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ret_bad_addr = Param.Bool(False, "Return pkt status bad address on access")
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update_data = Param.Bool(False, "Update the data that is returned on writes")
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warn_access = Param.String("", "String to print when device is accessed")
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fake_mem = Param.Bool(False,
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"Is this device acting like a memory and thus may get a cache line sized req")
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class BadAddr(IsaFake):
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pio_addr = 0
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ret_bad_addr = Param.Bool(True, "Return pkt status bad address on access")
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