From 759530f272500bc7d5ab24bdaee1dfac801205f5 Mon Sep 17 00:00:00 2001
From: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Date: Fri, 23 Sep 2022 18:43:22 +0200
Subject: [PATCH] build/generic_platform, generic_toolchain,
 yosys_nextpnr_wrapper: introduce the information about ability to do
 synthesis with mixed languages

---
 litex/build/generic_platform.py        | 5 +++++
 litex/build/generic_toolchain.py       | 5 +++++
 litex/build/yosys_nextpnr_toolchain.py | 3 +++
 3 files changed, 13 insertions(+)

diff --git a/litex/build/generic_platform.py b/litex/build/generic_platform.py
index c327b9f6a..0826e4a28 100644
--- a/litex/build/generic_platform.py
+++ b/litex/build/generic_platform.py
@@ -323,6 +323,7 @@ class ConstraintManager:
 
 class GenericPlatform:
     def __init__(self, device, io, connectors=[], name=None):
+        self.toolchain          = None
         self.device             = device
         self.constraint_manager = ConstraintManager(io, connectors)
         if name is None:
@@ -462,3 +463,7 @@ class GenericPlatform:
 
     def create_programmer(self):
         raise NotImplementedError
+
+    @property
+    def support_mixed_language(self):
+        return self.toolchain.support_mixed_language
diff --git a/litex/build/generic_toolchain.py b/litex/build/generic_toolchain.py
index 08c6c2144..998f66576 100644
--- a/litex/build/generic_toolchain.py
+++ b/litex/build/generic_toolchain.py
@@ -18,6 +18,7 @@ class GenericToolchain:
     }
 
     supported_build_backend = ["litex"]
+    _support_mixed_language  = True
 
     def __init__(self):
         self.clocks      = dict()
@@ -27,6 +28,10 @@ class GenericToolchain:
         self._vns        = None
         self._synth_opts = ""
 
+    @property
+    def support_mixed_language(self):
+        return self._support_mixed_language
+
     def finalize(self):
         pass # Pass since optional.
 
diff --git a/litex/build/yosys_nextpnr_toolchain.py b/litex/build/yosys_nextpnr_toolchain.py
index 04fc3a65b..e875bf3e0 100644
--- a/litex/build/yosys_nextpnr_toolchain.py
+++ b/litex/build/yosys_nextpnr_toolchain.py
@@ -57,10 +57,13 @@ class YosysNextPNRToolchain(GenericToolchain):
         target package  (optional/target dependant)
     _speed_grade: str
         target speed grade (optional/target dependant)
+    _support_mixed_language: bool
+        informs if toolchain is able to use only verilog or verilog + vhdl
     """
     attr_translate = {
         "keep": ("keep", "true"),
     }
+    _support_mixed_language  = False
 
     family     = ""
     synth_fmt  = ""