RSE: Add system routing table to BL1_1

In the case that the routing tables are not in the OTP, they are
compiled into BL1_1 instead. In order to facilitate this, we add a new
script which parses the Routing_tables python class and uses it to
generate a C source file. This can then be added to the BL1_1 source
files.

Change-Id: Ie6653da8ef00b8553383e500bba0e4f87bc3425a
Signed-off-by: Jackson Cooper-Driver <[email protected]>

Author: jaccoo01

platform/ext/target/arm/rse/common/CMakeLists.txt

@@ -915,6 +915,28 @@ if (RSE_AMOUNT GREATER 1)
                 --topology_graph_file=${MULTI_RSE_TOPOLOGY_FILE}
                 --routing_tables_output_file=${CMAKE_CURRENT_BINARY_DIR}/config/routing_tables.pickle
     )
+
+    if (NOT RSE_OTP_HAS_ROUTING_TABLES)
+        add_custom_target(routing_tables_definition_source_file
+            SOURCES ${CMAKE_CURRENT_BINARY_DIR}/rse_system_routing_tables_definition.c
+        )
+
+        add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/rse_system_routing_tables_definition.c
+            DEPENDS  ${CMAKE_CURRENT_SOURCE_DIR}/scripts/create_routing_tables_source_file.py
+            DEPENDS  ${CMAKE_CURRENT_BINARY_DIR}/config/routing_tables.pickle
+            COMMAND ${CMAKE_COMMAND} -E env PYTHONPATH=${CMAKE_SOURCE_DIR}/tools/modules
+                ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/create_routing_tables_source_file.py
+                    --routing_tables=${CMAKE_CURRENT_BINARY_DIR}/config/routing_tables.pickle
+                    --c_source_output_file ${CMAKE_CURRENT_BINARY_DIR}/rse_system_routing_tables_definition.c
+        )
+
+        add_dependencies(platform_bl1_1 routing_tables_definition_source_file)
+
+        target_sources(platform_bl1_1
+            PRIVATE
+                ${CMAKE_CURRENT_BINARY_DIR}/rse_system_routing_tables_definition.c
+        )
+    endif()
 endif()
 
 #========================= Files for building NS side platform ================#

platform/ext/target/arm/rse/common/scripts/create_routing_tables_source_file.py

@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+#-------------------------------------------------------------------------------
+# SPDX-FileCopyrightText: Copyright The TrustedFirmware-M Contributors
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+#-------------------------------------------------------------------------------
+
+import argparse
+import sys
+import os
+
+import arg_utils
+
+import logging
+logger = logging.getLogger("TF-M.{}".format(__name__))
+
+sys.path.append(os.path.join(sys.path[0], 'modules'))
+
+import routing_tables as rt
+from routing_tables import Routing_tables
+
+C_SOURCE = """/*
+ * SPDX-FileCopyrightText: Copyright The TrustedFirmware-M Contributors
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+/* This file is autogenerated - DO NOT EDIT! */
+
+#include "rse_routing_tables.h"
+
+const struct rse_whole_system_routing_tables_t rse_system_routing_tables =
+    {};
+"""
+
+def add_arguments(parser : argparse.ArgumentParser,
+                  prefix : str = "",
+                  required : bool = True,
+                  ) -> None:
+    rt.add_arguments(parser, prefix, required=True)
+
+def parse_args(args : argparse.Namespace,
+               prefix : str = "",
+               ) -> dict:
+    out = {}
+
+    out |= rt.parse_args(args, prefix=prefix)
+
+    return out
+
+script_description = """
+This script takes in the routing tables configuration and uses it to
+generate a C source file with the system wide routing tables definition
+"""
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(allow_abbrev=False,
+                                     formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+                                     description=script_description)
+
+    add_arguments(parser)
+
+    parser.add_argument("--c_source_output_file",    help="File to output the generated source file to", required=True)
+    parser.add_argument("--log_level", help="log level", required=False, default="ERROR", choices=logging._levelToName.values())
+
+    args = parser.parse_args()
+    logging.getLogger("TF-M").setLevel(args.log_level)
+    logger.addHandler(logging.StreamHandler())
+
+    kwargs = parse_args(args)
+
+    with open(args.c_source_output_file, "w") as f:
+        f.write(C_SOURCE.format(kwargs['routing_tables'].get_routing_tables_source()))