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authorPeter Enns <Peter.Enns@arm.com>2015-04-23 13:37:48 -0400
committerPeter Enns <Peter.Enns@arm.com>2015-04-23 13:37:48 -0400
commit2e64590b884540820072b0ea95707f50da5b0a65 (patch)
tree4b309a378d25580449523e002e428259c76a8e32 /src/dev/I2C.py
parentc8c4f66889686d621abe9393306d3aea1fda3782 (diff)
downloadgem5-2e64590b884540820072b0ea95707f50da5b0a65.tar.xz
dev: Add support for i2c devices
This patch adds an I2C bus and base device. I2C is used to connect a variety of sensors, and this patch serves as a starting point to enable a range of I2C devices.
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+# Copyright (c) 2012 ARM Limited
+# All rights reserved.
+#
+# The license below extends only to copyright in the software and shall
+# not be construed as granting a license to any other intellectual
+# property including but not limited to intellectual property relating
+# to a hardware implementation of the functionality of the software
+# licensed hereunder. You may use the software subject to the license
+# terms below provided that you ensure that this notice is replicated
+# unmodified and in its entirety in all distributions of the software,
+# modified or unmodified, in source code or in binary form.
+#
+# 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: Peter Enns
+
+from m5.SimObject import SimObject
+from m5.params import *
+from Device import BasicPioDevice
+
+class I2CDevice(SimObject):
+ type = 'I2CDevice'
+ cxx_header = "dev/i2cdev.hh"
+ abstract = True
+ i2c_addr = Param.UInt8("Address of device on i2c bus")
+
+class I2CBus(BasicPioDevice):
+ type = 'I2CBus'
+ cxx_header = "dev/i2cbus.hh"
+ devices = VectorParam.I2CDevice([], "Devices")