configs: Add --param to starter_se

This commit adds the --param option to the starter_se
configuration script for the Arm ISA. This is in order
to support attaching remote debugger sessions.

Change-Id: I2d8cc9f677f731948872003cca6066d1072ad570
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>

configs/example/arm/starter_se.py

@@ -1,4 +1,4 @@
-# Copyright (c) 2016-2017, 2022-2023 Arm Limited
+# Copyright (c) 2016-2017, 2022-2024 Arm Limited
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
@@ -203,6 +203,19 @@ def main():
         default="stdoutput",
         help="Destination for the Tarmac trace output. [Default: stdoutput]",
     )
+    parser.add_argument(
+        "-P",
+        "--param",
+        action="append",
+        default=[],
+        help="Set a SimObject parameter relative to the root node. "
+        "An extended Python multi range slicing syntax can be used "
+        "for arrays. For example: "
+        "'system.cpu[0,1,3:8:2].max_insts_all_threads = 42' "
+        "sets max_insts_all_threads for cpus 0, 1, 3, 5 and 7 "
+        "Direct parameters of the root object are not accessible, "
+        "only parameters of its children.",
+    )
 
     args = parser.parse_args()
 
@@ -215,6 +228,7 @@ def main():
     # Populate the root node with a system. A system corresponds to a
     # single node with shared memory.
     root.system = create(args)
+    root.apply_config(args.param)
 
     # Instantiate the C++ object hierarchy. After this point,
     # SimObjects can't be instantiated anymore.