Merge pull request #110 from antmicro/apache-2.0

Relicense to Apache-2.0

.github/workflows/ci.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 86c12c1..1eb9abe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,10 +1,18 @@
-# Copyright (C) 2021  The Symbiflow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier: ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 on: [push, pull_request]
 

.readthedocs.yml

diff --git a/.readthedocs.yml b/.readthedocs.yml
index f0a333c..05dbf18 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -1,10 +1,18 @@
-# Copyright (C) 2021  The Symbiflow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier: ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 # .readthedocs.yml
 # Read the Docs configuration file

COPYING

diff --git a/COPYING b/COPYING
deleted file mode 100644
index dd9bfa0..0000000
--- a/COPYING
+++ /dev/null
@@ -1,13 +0,0 @@
-Copyright (C) 2019 The Symbiflow Authors
-
-Permission to use, copy, modify, and/or distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

LICENSE

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
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+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+      including but not limited to software source code, documentation
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+      "Work" shall mean the work of authorship, whether in Source or
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+      form, that is based on (or derived from) the Work and for which the
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+      of this License, Derivative Works shall not include works that remain
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+      "Contribution" shall mean any work of authorship, including
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+      communication on electronic mailing lists, source code control systems,
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+          notices within Derivative Works that You distribute, alongside
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+
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+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
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+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
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+      Work (including but not limited to damages for loss of goodwill,
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+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
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+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
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+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
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+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

MANIFEST.in

diff --git a/MANIFEST.in b/MANIFEST.in
index cee3d1d..a9249da 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -11,7 +11,7 @@
 include *.md
 
 # Include the license file
-include COPYING
+include LICENSE
 
 include *.yapf
 include *.txt

Makefile

diff --git a/Makefile b/Makefile
index 99422c0..9b5fca5 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,18 @@
-# Copyright (C) 2021  The Symbiflow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier: ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 SHELL=bash
 

docs/Makefile

diff --git a/docs/Makefile b/docs/Makefile
index 4673ff7..7912dbf 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -1,10 +1,18 @@
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 # Minimal makefile for Sphinx documentation
 #

docs/collect_examples.py

diff --git a/docs/collect_examples.py b/docs/collect_examples.py
index d640df1..394d3b5 100644
--- a/docs/collect_examples.py
+++ b/docs/collect_examples.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 import os
 from shutil import copy, copytree, ignore_patterns

docs/conf.py

diff --git a/docs/conf.py b/docs/conf.py
index c6175f9..d16abde 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 #
 # SymbiFlow V2X documentation build configuration file, created by
 # sphinx-quickstart on Mon Feb  5 11:04:37 2018.

docs/environment.yml

diff --git a/docs/environment.yml b/docs/environment.yml
index a07fbc7..d36b16c 100644
--- a/docs/environment.yml
+++ b/docs/environment.yml
@@ -1,10 +1,18 @@
-# Copyright (C) 2021  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier: ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 name: v2x-docs
 channels:

docs/make_xml_for_docs.py

diff --git a/docs/make_xml_for_docs.py b/docs/make_xml_for_docs.py
index 92d0adc..4d47493 100644
--- a/docs/make_xml_for_docs.py
+++ b/docs/make_xml_for_docs.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 import argparse
 import os

environment.yml

diff --git a/environment.yml b/environment.yml
index e0375b6..87d562f 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,10 +1,18 @@
-# Copyright (C) 2021  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 name: symbiflow-v2x
 channels:

prepareenv.sh

diff --git a/prepareenv.sh b/prepareenv.sh
index 238f04c..81d93e1 100755
--- a/prepareenv.sh
+++ b/prepareenv.sh
@@ -1,12 +1,20 @@
 #!/bin/bash
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh
 bash miniconda.sh -b -p $HOME/miniconda

setup.py

diff --git a/setup.py b/setup.py
index 47df2b2..a01488d 100644
--- a/setup.py
+++ b/setup.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 import setuptools
 
@@ -37,7 +45,7 @@
     ],
     classifiers=[
         "Programming Language :: Python :: 3",
-        "License :: OSI Approved :: ISC License",
+        "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",
     ],
 )

tests/carry/carry.sim.v

diff --git a/tests/carry/carry.sim.v b/tests/carry/carry.sim.v
index e49685d..2f98bf2 100644
--- a/tests/carry/carry.sim.v
+++ b/tests/carry/carry.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `default_nettype none

tests/carry/cblock/cblock.sim.v

diff --git a/tests/carry/cblock/cblock.sim.v b/tests/carry/cblock/cblock.sim.v
index 75f6f36..16b20dc 100644
--- a/tests/carry/cblock/cblock.sim.v
+++ b/tests/carry/cblock/cblock.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `default_nettype none

tests/clock_mux/gmux.sim.v

diff --git a/tests/clock_mux/gmux.sim.v b/tests/clock_mux/gmux.sim.v
index c2490d7..9dedec6 100644
--- a/tests/clock_mux/gmux.sim.v
+++ b/tests/clock_mux/gmux.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:     ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 // A model of a clock multiplexer with two clock inputs, one clock output and

tests/clocks/dff_comb_one_clock/dff_comb_one_clock.sim.v

diff --git a/tests/clocks/dff_comb_one_clock/dff_comb_one_clock.sim.v b/tests/clocks/dff_comb_one_clock/dff_comb_one_clock.sim.v
index 6a6a355..645ea49 100644
--- a/tests/clocks/dff_comb_one_clock/dff_comb_one_clock.sim.v
+++ b/tests/clocks/dff_comb_one_clock/dff_comb_one_clock.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/clocks/dff_one_clock/dff_one_clock.sim.v

diff --git a/tests/clocks/dff_one_clock/dff_one_clock.sim.v b/tests/clocks/dff_one_clock/dff_one_clock.sim.v
index 4549365..ce4cef7 100644
--- a/tests/clocks/dff_one_clock/dff_one_clock.sim.v
+++ b/tests/clocks/dff_one_clock/dff_one_clock.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/clocks/dff_two_clocks/dff_two_clocks.sim.v

diff --git a/tests/clocks/dff_two_clocks/dff_two_clocks.sim.v b/tests/clocks/dff_two_clocks/dff_two_clocks.sim.v
index 4d27af3..16c2040 100644
--- a/tests/clocks/dff_two_clocks/dff_two_clocks.sim.v
+++ b/tests/clocks/dff_two_clocks/dff_two_clocks.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 module BLOCK(c1, c2, a, b, c, o1, o2);

tests/clocks/input_attr_clock/input_attr_clock.sim.v

diff --git a/tests/clocks/input_attr_clock/input_attr_clock.sim.v b/tests/clocks/input_attr_clock/input_attr_clock.sim.v
index 57b744d..96e8d49 100644
--- a/tests/clocks/input_attr_clock/input_attr_clock.sim.v
+++ b/tests/clocks/input_attr_clock/input_attr_clock.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/clocks/input_attr_not_clock/block.sim.v

diff --git a/tests/clocks/input_attr_not_clock/block.sim.v b/tests/clocks/input_attr_not_clock/block.sim.v
index 856cdd0..46e0508 100644
--- a/tests/clocks/input_attr_not_clock/block.sim.v
+++ b/tests/clocks/input_attr_not_clock/block.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/clocks/input_named_clk/input_named_clk.sim.v

diff --git a/tests/clocks/input_named_clk/input_named_clk.sim.v b/tests/clocks/input_named_clk/input_named_clk.sim.v
index e730c87..c7aa855 100644
--- a/tests/clocks/input_named_clk/input_named_clk.sim.v
+++ b/tests/clocks/input_named_clk/input_named_clk.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/clocks/input_named_rdclk/input_named_rdclk.sim.v

diff --git a/tests/clocks/input_named_rdclk/input_named_rdclk.sim.v b/tests/clocks/input_named_rdclk/input_named_rdclk.sim.v
index 9ebb2cf..1a17c56 100644
--- a/tests/clocks/input_named_rdclk/input_named_rdclk.sim.v
+++ b/tests/clocks/input_named_rdclk/input_named_rdclk.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/clocks/input_named_regex/block.sim.v

diff --git a/tests/clocks/input_named_regex/block.sim.v b/tests/clocks/input_named_regex/block.sim.v
index bbb5838..0dbff67 100644
--- a/tests/clocks/input_named_regex/block.sim.v
+++ b/tests/clocks/input_named_regex/block.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* whitebox *)

tests/clocks/multiple_inputs_named_clk/multiple_inputs_named_clk.sim.v

diff --git a/tests/clocks/multiple_inputs_named_clk/multiple_inputs_named_clk.sim.v b/tests/clocks/multiple_inputs_named_clk/multiple_inputs_named_clk.sim.v
index e8146e5..adadcbd 100644
--- a/tests/clocks/multiple_inputs_named_clk/multiple_inputs_named_clk.sim.v
+++ b/tests/clocks/multiple_inputs_named_clk/multiple_inputs_named_clk.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/clocks/multiple_outputs_named_clk/multiple_outputs_named_clk.sim.v

diff --git a/tests/clocks/multiple_outputs_named_clk/multiple_outputs_named_clk.sim.v b/tests/clocks/multiple_outputs_named_clk/multiple_outputs_named_clk.sim.v
index 6ce6f50..966ec62 100644
--- a/tests/clocks/multiple_outputs_named_clk/multiple_outputs_named_clk.sim.v
+++ b/tests/clocks/multiple_outputs_named_clk/multiple_outputs_named_clk.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/clocks/output_attr_clock/output_attr_clock.sim.v

diff --git a/tests/clocks/output_attr_clock/output_attr_clock.sim.v b/tests/clocks/output_attr_clock/output_attr_clock.sim.v
index fc3b6bc..168c287 100644
--- a/tests/clocks/output_attr_clock/output_attr_clock.sim.v
+++ b/tests/clocks/output_attr_clock/output_attr_clock.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/clocks/output_named_clk/output_named_clk.sim.v

diff --git a/tests/clocks/output_named_clk/output_named_clk.sim.v b/tests/clocks/output_named_clk/output_named_clk.sim.v
index 331a5a4..a30865e 100644
--- a/tests/clocks/output_named_clk/output_named_clk.sim.v
+++ b/tests/clocks/output_named_clk/output_named_clk.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/clocks/output_named_rdclk/output_named_rdclk.sim.v

diff --git a/tests/clocks/output_named_rdclk/output_named_rdclk.sim.v b/tests/clocks/output_named_rdclk/output_named_rdclk.sim.v
index ef20d94..0a3f620 100644
--- a/tests/clocks/output_named_rdclk/output_named_rdclk.sim.v
+++ b/tests/clocks/output_named_rdclk/output_named_rdclk.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /*

tests/dsp/dsp_combinational/dsp_combinational.sim.v

diff --git a/tests/dsp/dsp_combinational/dsp_combinational.sim.v b/tests/dsp/dsp_combinational/dsp_combinational.sim.v
index 635eef3..9414b0d 100644
--- a/tests/dsp/dsp_combinational/dsp_combinational.sim.v
+++ b/tests/dsp/dsp_combinational/dsp_combinational.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `ifndef DSP_COMB

tests/dsp/dsp_in_registered/dsp_in_registered.sim.v

diff --git a/tests/dsp/dsp_in_registered/dsp_in_registered.sim.v b/tests/dsp/dsp_in_registered/dsp_in_registered.sim.v
index 930674d..7439649 100644
--- a/tests/dsp/dsp_in_registered/dsp_in_registered.sim.v
+++ b/tests/dsp/dsp_in_registered/dsp_in_registered.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "../../vtr/dff/dff.sim.v"

tests/dsp/dsp_inout_registered/dsp_inout_registered.sim.v

diff --git a/tests/dsp/dsp_inout_registered/dsp_inout_registered.sim.v b/tests/dsp/dsp_inout_registered/dsp_inout_registered.sim.v
index 87b0164..a2267a2 100644
--- a/tests/dsp/dsp_inout_registered/dsp_inout_registered.sim.v
+++ b/tests/dsp/dsp_inout_registered/dsp_inout_registered.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "../../vtr/dff/dff.sim.v"

tests/dsp/dsp_inout_registered_dualclk/dsp_inout_registered_dualclk.sim.v

diff --git a/tests/dsp/dsp_inout_registered_dualclk/dsp_inout_registered_dualclk.sim.v b/tests/dsp/dsp_inout_registered_dualclk/dsp_inout_registered_dualclk.sim.v
index 4a928a9..fd20828 100644
--- a/tests/dsp/dsp_inout_registered_dualclk/dsp_inout_registered_dualclk.sim.v
+++ b/tests/dsp/dsp_inout_registered_dualclk/dsp_inout_registered_dualclk.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "../../vtr/dff/dff.sim.v"

tests/dsp/dsp_modes/dsp_modes.sim.v

diff --git a/tests/dsp/dsp_modes/dsp_modes.sim.v b/tests/dsp/dsp_modes/dsp_modes.sim.v
index f93b858..19d8fd6 100644
--- a/tests/dsp/dsp_modes/dsp_modes.sim.v
+++ b/tests/dsp/dsp_modes/dsp_modes.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "../dsp_combinational/dsp_combinational.sim.v"

tests/dsp/dsp_out_registered/dsp_out_registered.sim.v

diff --git a/tests/dsp/dsp_out_registered/dsp_out_registered.sim.v b/tests/dsp/dsp_out_registered/dsp_out_registered.sim.v
index f6c8cfa..ab3eb43 100644
--- a/tests/dsp/dsp_out_registered/dsp_out_registered.sim.v
+++ b/tests/dsp/dsp_out_registered/dsp_out_registered.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "../../vtr/dff/dff.sim.v"

tests/dsp/dsp_partial_registered/dsp_partial_registered.sim.v

diff --git a/tests/dsp/dsp_partial_registered/dsp_partial_registered.sim.v b/tests/dsp/dsp_partial_registered/dsp_partial_registered.sim.v
index 3ee235e..f26c31f 100644
--- a/tests/dsp/dsp_partial_registered/dsp_partial_registered.sim.v
+++ b/tests/dsp/dsp_partial_registered/dsp_partial_registered.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "../../vtr/dff/dff.sim.v"

tests/gates/and/and.sim.v

diff --git a/tests/gates/and/and.sim.v b/tests/gates/and/and.sim.v
index be2ee47..8c2a34f 100644
--- a/tests/gates/and/and.sim.v
+++ b/tests/gates/and/and.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 module AND (

tests/gates/nor/nor.sim.v

diff --git a/tests/gates/nor/nor.sim.v b/tests/gates/nor/nor.sim.v
index 7517e0e..f2696fb 100644
--- a/tests/gates/nor/nor.sim.v
+++ b/tests/gates/nor/nor.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 module NOR (

tests/gates/not/not.sim.v

diff --git a/tests/gates/not/not.sim.v b/tests/gates/not/not.sim.v
index 0452fd2..3e052c0 100644
--- a/tests/gates/not/not.sim.v
+++ b/tests/gates/not/not.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 module NOT (

tests/gates/xor/xor.sim.v

diff --git a/tests/gates/xor/xor.sim.v b/tests/gates/xor/xor.sim.v
index 23adbb4..b459ad7 100644
--- a/tests/gates/xor/xor.sim.v
+++ b/tests/gates/xor/xor.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "../nor/nor.sim.v"

tests/internal_conn/child/child.sim.v

diff --git a/tests/internal_conn/child/child.sim.v b/tests/internal_conn/child/child.sim.v
index 9867f80..dc0ca04 100644
--- a/tests/internal_conn/child/child.sim.v
+++ b/tests/internal_conn/child/child.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* blackbox *)

tests/internal_conn/parent.sim.v

diff --git a/tests/internal_conn/parent.sim.v b/tests/internal_conn/parent.sim.v
index 6d10ee1..93d06b6 100644
--- a/tests/internal_conn/parent.sim.v
+++ b/tests/internal_conn/parent.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "./child/child.sim.v"

tests/io/input/ipad.sim.v

diff --git a/tests/io/input/ipad.sim.v b/tests/io/input/ipad.sim.v
index 76c88d4..c310628 100644
--- a/tests/io/input/ipad.sim.v
+++ b/tests/io/input/ipad.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* CLASS="input" *)

tests/io/output/opad.sim.v

diff --git a/tests/io/output/opad.sim.v b/tests/io/output/opad.sim.v
index f82b7f0..3b4b6ad 100644
--- a/tests/io/output/opad.sim.v
+++ b/tests/io/output/opad.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* CLASS="output" *)

tests/logicbox/logicbox.sim.v

diff --git a/tests/logicbox/logicbox.sim.v b/tests/logicbox/logicbox.sim.v
index b850219..406d210 100644
--- a/tests/logicbox/logicbox.sim.v
+++ b/tests/logicbox/logicbox.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* whitebox *)

tests/modes/inv.sim.v

diff --git a/tests/modes/inv.sim.v b/tests/modes/inv.sim.v
index 893673f..5663104 100644
--- a/tests/modes/inv.sim.v
+++ b/tests/modes/inv.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "./not/not.sim.v"

tests/modes/not/not.sim.v

diff --git a/tests/modes/not/not.sim.v b/tests/modes/not/not.sim.v
index 760a2ca..160dc78 100644
--- a/tests/modes/not/not.sim.v
+++ b/tests/modes/not/not.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* whitebox *)

tests/multiple_instance/multiple_instance.sim.v

diff --git a/tests/multiple_instance/multiple_instance.sim.v b/tests/multiple_instance/multiple_instance.sim.v
index ab3423a..8ca6f8b 100644
--- a/tests/multiple_instance/multiple_instance.sim.v
+++ b/tests/multiple_instance/multiple_instance.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "../vtr/full-adder/adder.sim.v"

tests/mux_class/mux_class.sim.v

diff --git a/tests/mux_class/mux_class.sim.v b/tests/mux_class/mux_class.sim.v
index 497c953..b53c339 100644
--- a/tests/mux_class/mux_class.sim.v
+++ b/tests/mux_class/mux_class.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* CLASS="mux" *)

tests/muxes/use_mux.sim.v

diff --git a/tests/muxes/use_mux.sim.v b/tests/muxes/use_mux.sim.v
index 5b256fa..dea0fd1 100644
--- a/tests/muxes/use_mux.sim.v
+++ b/tests/muxes/use_mux.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "routing/rmux.sim.v"

tests/net_attr/child/child.sim.v

diff --git a/tests/net_attr/child/child.sim.v b/tests/net_attr/child/child.sim.v
index dc71b17..fd80328 100644
--- a/tests/net_attr/child/child.sim.v
+++ b/tests/net_attr/child/child.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 module CHILD(

tests/net_attr/parent.sim.v

diff --git a/tests/net_attr/parent.sim.v b/tests/net_attr/parent.sim.v
index 84d80bc..fbba910 100644
--- a/tests/net_attr/parent.sim.v
+++ b/tests/net_attr/parent.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "./child/child.sim.v"

tests/no_comb/ff.sim.v

diff --git a/tests/no_comb/ff.sim.v b/tests/no_comb/ff.sim.v
index d5c8507..28d11dc 100644
--- a/tests/no_comb/ff.sim.v
+++ b/tests/no_comb/ff.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* whitebox *)

tests/no_seq/lut_ff_macro.sim.v

diff --git a/tests/no_seq/lut_ff_macro.sim.v b/tests/no_seq/lut_ff_macro.sim.v
index fad14e5..9663665 100644
--- a/tests/no_seq/lut_ff_macro.sim.v
+++ b/tests/no_seq/lut_ff_macro.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier: ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* whitebox *)

tests/pack_pattern/dff/dff.sim.v

diff --git a/tests/pack_pattern/dff/dff.sim.v b/tests/pack_pattern/dff/dff.sim.v
index 8eb2141..3fb58fe 100644
--- a/tests/pack_pattern/dff/dff.sim.v
+++ b/tests/pack_pattern/dff/dff.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* whitebox *)

tests/pack_pattern/lut/lut4.sim.v

diff --git a/tests/pack_pattern/lut/lut4.sim.v b/tests/pack_pattern/lut/lut4.sim.v
index d8b9487..bf4ae88 100644
--- a/tests/pack_pattern/lut/lut4.sim.v
+++ b/tests/pack_pattern/lut/lut4.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* whitebox *)

tests/pack_pattern/pack_pattern.sim.v

diff --git a/tests/pack_pattern/pack_pattern.sim.v b/tests/pack_pattern/pack_pattern.sim.v
index 8006fd9..14285e0 100644
--- a/tests/pack_pattern/pack_pattern.sim.v
+++ b/tests/pack_pattern/pack_pattern.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "lut/lut4.sim.v"

tests/simple_pll/simple_pll.sim.v

diff --git a/tests/simple_pll/simple_pll.sim.v b/tests/simple_pll/simple_pll.sim.v
index e7e6324..e976a7a 100644
--- a/tests/simple_pll/simple_pll.sim.v
+++ b/tests/simple_pll/simple_pll.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /* Simple model of a PLL which divides the input block by 64 */

tests/test_v2x.py

diff --git a/tests/test_v2x.py b/tests/test_v2x.py
index 34215d1..3f509c5 100644
--- a/tests/test_v2x.py
+++ b/tests/test_v2x.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 from pathlib import Path
 import os

tests/vtr/dff/dff.sim.v

diff --git a/tests/vtr/dff/dff.sim.v b/tests/vtr/dff/dff.sim.v
index ed67b34..0261f80 100644
--- a/tests/vtr/dff/dff.sim.v
+++ b/tests/vtr/dff/dff.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 `ifndef DFF
 `define DFF

tests/vtr/full-adder/adder.sim.v

diff --git a/tests/vtr/full-adder/adder.sim.v b/tests/vtr/full-adder/adder.sim.v
index c07e0e1..64fd7de 100644
--- a/tests/vtr/full-adder/adder.sim.v
+++ b/tests/vtr/full-adder/adder.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* whitebox *)

tests/vtr/lutff-pair/dff/dff.sim.v

diff --git a/tests/vtr/lutff-pair/dff/dff.sim.v b/tests/vtr/lutff-pair/dff/dff.sim.v
index 8eb2141..3fb58fe 100644
--- a/tests/vtr/lutff-pair/dff/dff.sim.v
+++ b/tests/vtr/lutff-pair/dff/dff.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* whitebox *)

tests/vtr/lutff-pair/lut/lut4.sim.v

diff --git a/tests/vtr/lutff-pair/lut/lut4.sim.v b/tests/vtr/lutff-pair/lut/lut4.sim.v
index d8b9487..bf4ae88 100644
--- a/tests/vtr/lutff-pair/lut/lut4.sim.v
+++ b/tests/vtr/lutff-pair/lut/lut4.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 (* whitebox *)

tests/vtr/lutff-pair/omux/omux.sim.v

diff --git a/tests/vtr/lutff-pair/omux/omux.sim.v b/tests/vtr/lutff-pair/omux/omux.sim.v
index 54258b5..7123d66 100644
--- a/tests/vtr/lutff-pair/omux/omux.sim.v
+++ b/tests/vtr/lutff-pair/omux/omux.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 /* 

tests/vtr/lutff-pair/pair.sim.v

diff --git a/tests/vtr/lutff-pair/pair.sim.v b/tests/vtr/lutff-pair/pair.sim.v
index 7f7e8b5..c23d439 100644
--- a/tests/vtr/lutff-pair/pair.sim.v
+++ b/tests/vtr/lutff-pair/pair.sim.v
@@ -1,11 +1,19 @@
 /*
- * Copyright (C) 2020  The SymbiFlow Authors.
+ * Copyright 2020-2022 F4PGA Authors
  *
- * Use of this source code is governed by a ISC-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/ISC
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * SPDX-License-Identifier:	ISC
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 `include "lut/lut4.sim.v"

v2x/__init__.py

diff --git a/v2x/__init__.py b/v2x/__init__.py
index d01b7b8..b2b4362 100644
--- a/v2x/__init__.py
+++ b/v2x/__init__.py
@@ -1,10 +1,18 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0

v2x/__main__.py

diff --git a/v2x/__main__.py b/v2x/__main__.py
index 8791a2f..b2a9618 100644
--- a/v2x/__main__.py
+++ b/v2x/__main__.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 from . import vlog_to_pbtype
 from . import vlog_to_model

v2x/lib/__init__.py

diff --git a/v2x/lib/__init__.py b/v2x/lib/__init__.py
index d01b7b8..b2b4362 100644
--- a/v2x/lib/__init__.py
+++ b/v2x/lib/__init__.py
@@ -1,10 +1,18 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0

v2x/lib/argparse_extra.py

diff --git a/v2x/lib/argparse_extra.py b/v2x/lib/argparse_extra.py
index 7babe4b..d5d9ecd 100644
--- a/v2x/lib/argparse_extra.py
+++ b/v2x/lib/argparse_extra.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 import argparse
 

v2x/lib/asserts.py

diff --git a/v2x/lib/asserts.py b/v2x/lib/asserts.py
index 1fcd4e0..d76fed1 100644
--- a/v2x/lib/asserts.py
+++ b/v2x/lib/asserts.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 
 def __safe_call(f, a):

v2x/lib/mux.py

diff --git a/v2x/lib/mux.py b/v2x/lib/mux.py
index 596df19..6069152 100644
--- a/v2x/lib/mux.py
+++ b/v2x/lib/mux.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 import lxml.etree as ET
 from enum import Enum

v2x/mux_gen.py

diff --git a/v2x/mux_gen.py b/v2x/mux_gen.py
index eb6efb9..b4f5482 100755
--- a/v2x/mux_gen.py
+++ b/v2x/mux_gen.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 """
 Generate MUX.
 

v2x/vlog_to_model.py

diff --git a/v2x/vlog_to_model.py b/v2x/vlog_to_model.py
index 98bc4ee..95294a0 100755
--- a/v2x/vlog_to_model.py
+++ b/v2x/vlog_to_model.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 """
 Convert a Verilog simulation model to a VPR `model.xml`
 

v2x/vlog_to_pbtype.py

diff --git a/v2x/vlog_to_pbtype.py b/v2x/vlog_to_pbtype.py
index 99bdb26..de5db80 100755
--- a/v2x/vlog_to_pbtype.py
+++ b/v2x/vlog_to_pbtype.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 """\
 Convert a Verilog simulation model to a VPR `pb_type.xml`
 

v2x/xmlinc/__init__.py

diff --git a/v2x/xmlinc/__init__.py b/v2x/xmlinc/__init__.py
index d01b7b8..b2b4362 100644
--- a/v2x/xmlinc/__init__.py
+++ b/v2x/xmlinc/__init__.py
@@ -1,10 +1,18 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0

v2x/xmlinc/xmlinc.py

diff --git a/v2x/xmlinc/xmlinc.py b/v2x/xmlinc/xmlinc.py
index b519953..ca64e77 100644
--- a/v2x/xmlinc/xmlinc.py
+++ b/v2x/xmlinc/xmlinc.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 import lxml.etree as ET
 import os

v2x/yosys/__init__.py

diff --git a/v2x/yosys/__init__.py b/v2x/yosys/__init__.py
index d01b7b8..b2b4362 100644
--- a/v2x/yosys/__init__.py
+++ b/v2x/yosys/__init__.py
@@ -1,10 +1,18 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0

v2x/yosys/json.py

diff --git a/v2x/yosys/json.py b/v2x/yosys/json.py
index 4159207..44c9c93 100755
--- a/v2x/yosys/json.py
+++ b/v2x/yosys/json.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 """
 This is intended to provide a range of helper functions around the output of
 Yosys' `write_json`. Depending on the tasks, this may need to be flattened

v2x/yosys/run.py

diff --git a/v2x/yosys/run.py b/v2x/yosys/run.py
index 92843a2..8678bb2 100755
--- a/v2x/yosys/run.py
+++ b/v2x/yosys/run.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 import json
 import os

v2x/yosys/utils.py

diff --git a/v2x/yosys/utils.py b/v2x/yosys/utils.py
index 1afd475..2efa3a0 100644
--- a/v2x/yosys/utils.py
+++ b/v2x/yosys/utils.py
@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright 2020-2022 F4PGA Authors
 #
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-# SPDX-License-Identifier:	ISC
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 import re