configs: Added LupV script to configs

This commit adds run_lupv.py, the script to run the LupVBoard, as well
as a README that details how to set up your system in order to run
the LupIO devices.

Change-Id: Ibea098f0409819b4c79063ab0be01518c7c6a61f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/53046
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

configs/example/lupv/README.md

@@ -0,0 +1,44 @@
+# README
+
+This README details how to build a RISCV full system that utilizes the
+lupIO devices. The LupIO devices were created by Professor Joël Porquet-Lupine,
+and more information about the device can be found [here](
+https://luplab.cs.ucdavis.edu/assets/lupio/wcae21-porquet-lupio-paper.pdf). The
+specs for each individual device can be found [here](
+https://gitlab.com/luplab/lupio/lupio-specs), and the Linux drivers for each of
+these devices can be found [here](https://gitlab.com/luplab/lupio/linux).
+
+To build the RISCV gem5 binary execute:
+
+```sh
+scons build/RISCV/gem5.opt
+```
+
+Then, to run the LupIO example execute:
+
+
+``` bash
+.build/RISCV/gem5.opt configs/example/lupv/run_lupv.py  [cpu type] [num cpus]
+```
+
+Note: valid cpu types are `atomic` and `timing` for now.
+
+For example:
+
+```bash
+gem5/build/RISCV/gem5.opt configs/example/lupv/run_lupv.py atomic 1
+```
+
+You can observe the stdout of the simulated system in `m5out/system.terminal`.
+Then, you can open up a separate terminal and use m5term to connect to the
+simulated console. The port number will be specified in the gem5 simulation
+as `0: system.remote_gdb: listening for remote gdb on port <port>`
+
+example:
+
+```bash
+m5term localhost 3456
+```
+
+This should allow you to run busybox, in which you can see the LupIO device at
+work!

configs/example/lupv/run_lupv.py

@@ -0,0 +1,112 @@
+# Copyright (c) 2021 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 example runs a simple linux boot.
+Characteristics
+---------------
+* Runs exclusively on the RISC-V ISA with the classic caches
+* Assumes that the kernel is compiled into the bootloader
+* Automatically generates the DTB file
+"""
+
+import m5
+from m5.objects import Root
+
+from gem5.runtime import get_runtime_isa
+from gem5.components.boards.experimental.lupv_board import LupvBoard
+from gem5.components.memory.single_channel import SingleChannelDDR3_1600
+from gem5.components.processors.simple_processor import SimpleProcessor
+from gem5.components.processors.cpu_types import CPUTypes
+from gem5.isas import ISA
+from gem5.utils.requires import requires
+from gem5.resources.resource import Resource, CustomResource
+
+import argparse
+
+# Run a check to ensure the right version of gem5 is being used.
+requires(isa_required=ISA.RISCV)
+
+from gem5.components.cachehierarchies.classic.\
+    private_l1_private_l2_cache_hierarchy import (
+    PrivateL1PrivateL2CacheHierarchy,
+)
+
+parser = argparse.ArgumentParser(description="Runs Linux fs test with RISCV.")
+parser.add_argument(
+    "cpu_type",
+    choices=("timing", "atomic"),
+    help="The type of CPU in the system",
+)
+parser.add_argument(
+    "num_cpus", type=int, help="The number of CPU in the system"
+)
+
+args = parser.parse_args()
+
+cache_hierarchy = PrivateL1PrivateL2CacheHierarchy(
+    l1d_size="32KiB", l1i_size="32KiB", l2_size="512KiB"
+)
+
+# Setup the system memory.
+memory = SingleChannelDDR3_1600(size="128MB")
+# Setup a single core Processor.
+if args.cpu_type == "atomic":
+    processor = SimpleProcessor(
+        cpu_type=CPUTypes.ATOMIC, num_cores=args.num_cpus
+    )
+elif args.cpu_type == "timing":
+    processor = SimpleProcessor(
+        cpu_type=CPUTypes.TIMING, num_cores=args.num_cpus
+    )
+
+# Setup the board.
+board = LupvBoard(
+    clk_freq="1GHz",
+    processor=processor,
+    memory=memory,
+    cache_hierarchy=cache_hierarchy,
+)
+# Set the Full System workload.
+
+board.set_kernel_disk_workload(
+    kernel=Resource("riscv-lupio-linux-kernel"),
+    disk_image=Resource("riscv-lupio-busybox-img"),
+)
+
+
+# Begin running of the simulation.
+print("Running with ISA: " + get_runtime_isa().name)
+print()
+root = Root(full_system=True, system=board)
+m5.instantiate()
+print("Beginning simulation!")
+
+exit_event = m5.simulate()
+
+print(
+    "Exiting @ tick {} because {}.".format(m5.curTick(), exit_event.getCause())
+)