Merge pull request #231 from riscv/copilot/sub-pr-230

Accept multibase string literals in CSR enum value parsing

Author: james-ball-qualcomm

tools/create_params.py

@@ -651,12 +651,12 @@ def parse_multibase_int(value: Any, label: str, csr_name: str) -> int:
             fatal(f"CSR {representative_name} in {def_filename} has invalid or empty enum.legal")
         csr_legal_enum = []
         for value in raw_legal:
-            if not isinstance(value, int) or isinstance(value, bool):
+            if not isinstance(value, (int, str)) or isinstance(value, bool):
                 fatal(
-                    f"CSR {representative_name} in {def_filename} has non-integer "
-                    f"value in enum.legal: {value!r}"
+                    f"CSR {representative_name} in {def_filename} has invalid value in enum.legal: "
+                    f"{value!r}; expected integer, hex string, or binary string"
                 )
-            csr_legal_enum.append(value)
+            csr_legal_enum.append(parse_multibase_int(value, "enum.legal", representative_name))
 
         # Parse illegal-write behavior (must be one of the two)
         raw_illegal_ignore = raw_enum.get("illegal-write-ignore")