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scripts/split-mems-conf.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+
+import json
+import argparse
+from typing import List, Optional
+
+# Schema of json emitted by circt
+"""
+{
+  "module_name": "mem_ext",
+  "depth": 512,
+  "width": 64,
+  "masked": true,
+  "read": false,
+  "write": false,
+  "readwrite": true,
+  "mask_granularity": 8,
+  "extra_ports": [],
+  "hierarchy": [
+    "TestHarness.ram.srams.mem.mem_ext"
+  ]
+}
+"""
+
+def get_modules(js: dict) -> List[str]:
+    if 'instances' not in js:
+        return js['module_name']
+    else:
+        mods = []
+        for mod in js['instances']:
+            mods.extend(get_modules(mod))
+        return [js['module_name']] + mods
+
+def find_mod_by_name(js: dict, name: str) -> Optional[List[dict]]:
+    if 'instances' not in js:
+        return None
+    else:
+        mods = []
+        for mod in js['instances']:
+            if mod['module_name'] == name:
+                mods.append(mod)
+            other_mods = find_mod_by_name(mod, name)
+            if other_mods is not None:
+                mods.extend(other_mods)
+        return mods
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description='Use CIRCT (firtool) smems JSONs to create DUT and test harness smems confs')
+    parser.add_argument('--in-smems-conf', type=str, required=True, help='')
+    parser.add_argument('--in-dut-smems-json', type=str, required=True, help='')
+    parser.add_argument('--in-tb-smems-json', type=str, required=True, help='')
+    parser.add_argument('--out-dut-smems-conf', type=str, required=True, help='')
+    parser.add_argument('--out-tb-smems-conf', type=str, required=True, help='')
+    args = parser.parse_args()
+
+    with open(args.in_smems_conf) as isc:
+        with open(args.in_dut_smems_json) as idsj:
+            with open(args.in_tb_smems_json) as itsj:
+                idsj_data = json.load(idsj)
+                itsj_data  = json.load(itsj)
+
+                dut_mods = set()
+                for e in idsj_data:
+                    dut_mods.add(e['module_name'])
+
+                tb_mods = set()
+                for e in itsj_data:
+                    tb_mods.add(e['module_name'])
+
+                with open(args.out_dut_smems_conf, "w") as odsc:
+                    with open(args.out_tb_smems_conf, "w") as otsc:
+                        for l in isc:
+                            sl = l.split()
+                            name = sl[1]
+
+                            if name in dut_mods:
+                                odsc.write(l)
+                            elif name in tb_mods:
+                                otsc.write(l)
+                            else:
+                                assert False, "Unable to find smem CONF module in firtool emitted JSON files."