stdlib, configs: Add example SE mode script for RISCV matched

This script runs the riscv-hello binary from gem5 resources on the
RISCV matched prebuilt board found in the
src/python/gem5/prebuilt/riscvmatched/ directory.

Change-Id: I1b527588b0319e9ab853dfcbfa381db2137d1a98
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/63571
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>

configs/example/gem5_library/riscvmatched-hello.py

@@ -0,0 +1,65 @@
+# Copyright (c) 2022 The Regents of the University of California
+# All rights reserved.
+#
+# 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.
+"""
+This gem5 configuation script runs a "hello world" binary on the
+RISCVMatched prebuilt board found in src/python/gem5/prebuilt/riscvmatched/
+
+Usage
+-----
+
+```
+scons build/RISCV/gem5.opt
+./build/RISCV/gem5.opt \
+    configs/example/gem5_library/riscvmatched-hello.py
+```
+"""
+
+from gem5.resources.resource import Resource
+from gem5.simulate.simulator import Simulator
+from python.gem5.prebuilt.riscvmatched.riscvmatched_board import (
+    RISCVMatchedBoard,
+)
+from gem5.isas import ISA
+from gem5.utils.requires import requires
+
+requires(isa_required=ISA.RISCV)
+
+# instantiate the riscv matched board with default parameters
+board = RISCVMatchedBoard()
+
+# set the hello world riscv binary as the board workload
+board.set_se_binary_workload(Resource("riscv-hello"))
+
+# run the simulation with the RISCV Matched board
+simulator = Simulator(board=board, full_system=False)
+simulator.run()
+
+print(
+    "Exiting @ tick {} because {}.".format(
+        simulator.get_current_tick(),
+        simulator.get_last_exit_event_cause(),
+    )
+)