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arm: DT autogeneration - autogenerate RealView Platform devices

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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>
This commit is contained in:
Glenn Bergmans
2015-12-17 11:49:51 +00:00
committed by Curtis Dunham
parent 1a51f335ff
commit 199ff5e677
2 changed files with 219 additions and 1 deletions
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33
src/dev/Device.py
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@@ -1,3 +1,15 @@
# Copyright (c) 2012-2016 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.
#
# Copyright (c) 2005-2007 The Regents of The University of Michigan
# All rights reserved.
#
@@ -25,9 +37,11 @@
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Nathan Binkert
# Glenn Bergmans
from m5.params import *
from m5.proxy import *
from m5.util.fdthelper import *
from MemObject import MemObject
class PioDevice(MemObject):
@@ -37,6 +51,25 @@ class PioDevice(MemObject):
pio = SlavePort("Programmed I/O port")
system = Param.System(Parent.any, "System this device is part of")
def generateBasicPioDeviceNode(self, state, name, pio_addr,
size, interrupts = None):
node = FdtNode("%s@%x" % (name, long(pio_addr)))
node.append(FdtPropertyWords("reg",
state.addrCells(pio_addr) +
state.sizeCells(size) ))
if interrupts:
if any([i < 32 for i in interrupts]):
raise(("Interrupt number smaller than 32 "+
" in PioDevice %s") % name)
# subtracting 32 because Linux assumes that SPIs start at 0, while
# gem5 uses the internal GIC numbering (SPIs start at 32)
node.append(FdtPropertyWords("interrupts", sum(
[[0, i - 32, 4] for i in interrupts], []) ))
return node
class BasicPioDevice(PioDevice):
type = 'BasicPioDevice'
cxx_header = "dev/io_device.hh"