gem5 with ARM

[Tanu Hari Dixit]

Hello all,
Thank you for creating
https://devel.rtems.org/wiki/Developer/Simulators/gem5 just in time. I
installed gem5 and scons build/ARM/gem5.opt ran to give the following
output at the end:
scons: done building targets.

I ran the following, after this:
build/ARM/gem5.opt configs/example/fs.py
--kernel=${HOME}/development/rtems/src/builds/realview_pbx_a9_qemu/arm-rtems4.12/c/realview_pbx_a9_qemu/testsuites/samples/hello/hello.exe
--mem-size=256MB --bare-metal --machine-type=RealView_PBX
--dtb-filename=None --enable-security-extensions
as instructed in the link.

But it gave the following output:
Usage: fs.py [options]
fs.py: error: no such option: --enable-security-extensions

I tried it without the option, and still found no luck;

thd at thd-Inspiron-5537:~/gem5$ build/ARM/gem5.opt configs/example/fs.py
--kernel=${HOME}/development/rtems/src/builds/realview_pbx_a9_qemu/arm-rtems4.12/c/realview_pbx_a9_qemu/testsuites/samples/hello/hello.exe
--mem-size=256MB --bare-metal --machine-type=RealView_PBX
--dtb-filename=None
gem5 Simulator System.  http://gem5.org
gem5 is copyrighted software; use the --copyright option for details.

gem5 compiled Mar 16 2017 02:46:18
gem5 started May 23 2017 02:59:01
gem5 executing on thd-Inspiron-5537, pid 7719
command line: build/ARM/gem5.opt configs/example/fs.py
--kernel=/home/thd/development/rtems/src/builds/realview_pbx_a9_qemu/arm-rtems4.12/c/realview_pbx_a9_qemu/testsuites/samples/hello/hello.exe
--mem-size=256MB --bare-metal --machine-type=RealView_PBX
--dtb-filename=None

Global frequency set at 1000000000000 ticks per second
warn: DRAM device capacity (8192 Mbytes) does not match the address
range assigned (256 Mbytes)
info: kernel located at:
/home/thd/development/rtems/src/builds/realview_pbx_a9_qemu/arm-rtems4.12/c/realview_pbx_a9_qemu/testsuites/samples/hello/hello.exe
Listening for system connection on port 5900
Listening for system connection on port 3456
0: system.remote_gdb.listener: listening for remote gdb #0 on port 7000
warn: ClockedObject: More than one power state change request
encountered within the same simulation tick
**** REAL SIMULATION ****
warn: Existing EnergyCtrl, but no enabled DVFSHandler found.
info: Entering event queue @ 0.  Starting simulation...
warn:     instruction 'mcr bpiall' unimplemented
panic: Tried to write SCU at offset 0
Memory Usage: 660292 KBytes
Program aborted at tick 56000
--- BEGIN LIBC BACKTRACE ---
build/ARM/gem5.opt(_Z15print_backtracev+0x15)[0xc45c55]
build/ARM/gem5.opt(_Z12abortHandleri+0x36)[0xc55786]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x10330)[0x7f3b92e6c330]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x37)[0x7f3b916bdc37]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x148)[0x7f3b916c1028]
build/ARM/gem5.opt(_ZN5A9SCU5writeEP6Packet+0x4e)[0xb39e8e]
build/ARM/gem5.opt(_ZN7PioPort10recvAtomicEP6Packet+0x66)[0xafd666]
build/ARM/gem5.opt(_ZN12CoherentXBar10recvAtomicEP6Packets+0x3cf)[0x9c98ef]
build/ARM/gem5.opt(_ZN15AtomicSimpleCPU8writeMemEPhjm5FlagsIjEPm+0x337)[0xe102c7]
build/ARM/gem5.opt(_ZN17SimpleExecContext8writeMemEPhjm5FlagsIjEPm+0x21)[0xe1b181]
build/ARM/gem5.opt(_Z14writeMemAtomicI11ExecContextjESt10shared_ptrI9FaultBaseEPT_PN5Trace10InstRecordERKT0_m5FlagsIjEPm+0x4b)[0x156653b]
build/ARM/gem5.opt(_ZNK10ArmISAInst28STORE_IMM_AY_PN_SN_UN_WN_SZ47executeEP11ExecContextPN5Trace10InstRecordE+0x171)[0x1525461]
build/ARM/gem5.opt(_ZN15AtomicSimpleCPU4tickEv+0x277)[0xe0ed27]
build/ARM/gem5.opt(_ZN10EventQueue10serviceOneEv+0xb1)[0xc4dcc1]
build/ARM/gem5.opt(_Z9doSimLoopP10EventQueue+0x38)[0xc6fc38]
build/ARM/gem5.opt(_Z8simulatem+0x35b)[0xc7031b]
build/ARM/gem5.opt[0x965e7c]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x45f7)[0x7f3b92a375b7]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x80d)[0x7f3b92a39c3d]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x48d8)[0x7f3b92a37898]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x4b59)[0x7f3b92a37b19]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x4b59)[0x7f3b92a37b19]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x80d)[0x7f3b92a39c3d]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x32)[0x7f3b92a39f22]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x563e)[0x7f3b92a385fe]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x80d)[0x7f3b92a39c3d]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x48d8)[0x7f3b92a37898]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x80d)[0x7f3b92a39c3d]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x32)[0x7f3b92a39f22]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyRun_StringFlags+0x79)[0x7f3b9294c529]
build/ARM/gem5.opt(_Z6m5MainiPPc+0x5f)[0xc54d1f]
build/ARM/gem5.opt(main+0x33)[0x8e3b53]
--- END LIBC BACKTRACE ---
Aborted (core dumped)

Can you please help me with this? I can't figure out what is wrong.
I need to run the simulator for sparc64/usiii and
arm/realview_pbx_a9_qemu BSPs and eventually automate it with
rtems-tester (as part of GSoC, '17).

Thank you,
Tanu Hari Dixit.