diff --git a/docs/environment.yml b/docs/environment.yml
index 115e12c..2bddf94 100644
--- a/docs/environment.yml
+++ b/docs/environment.yml
@@ -13,6 +13,7 @@
 # limitations under the License.
 #
 # SPDX-License-Identifier: Apache-2.0
+
 name: caravel-docs
 channels:
 - defaults
diff --git a/docs/source/conf.py b/docs/source/conf.py
index c015db1..5502d53 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -1,3 +1,19 @@
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+
 # Configuration file for the Sphinx documentation builder.
 #
 # This file only contains a selection of the most common options. For a full
diff --git a/docs/source/counter-timers.rst b/docs/source/counter-timers.rst
index 78d444a..b27f99d 100644
--- a/docs/source/counter-timers.rst
+++ b/docs/source/counter-timers.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Counter-Timers
 ==============
 
diff --git a/docs/source/description.rst b/docs/source/description.rst
index 1d6b485..4ab01e7 100644
--- a/docs/source/description.rst
+++ b/docs/source/description.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Description
 ===========
 
diff --git a/docs/source/external-clock.rst b/docs/source/external-clock.rst
index 6e8fc7f..e076fbc 100644
--- a/docs/source/external-clock.rst
+++ b/docs/source/external-clock.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 External clock
 ==============
 
diff --git a/docs/source/further-work.rst b/docs/source/further-work.rst
index d3897a9..e92bc7c 100644
--- a/docs/source/further-work.rst
+++ b/docs/source/further-work.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Further work
 ============
 
diff --git a/docs/source/gpio.rst b/docs/source/gpio.rst
index 2593715..5752fc0 100644
--- a/docs/source/gpio.rst
+++ b/docs/source/gpio.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 General Purpose Input/Output
 ============================
 
diff --git a/docs/source/housekeeping-spi.rst b/docs/source/housekeeping-spi.rst
index f55a10a..8432519 100644
--- a/docs/source/housekeeping-spi.rst
+++ b/docs/source/housekeeping-spi.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Housekeeping SPI
 ================
 
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 888d4c5..6703921 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 ==============================
 Efabless Caravel "harness" SoC
 ==============================
diff --git a/docs/source/introduction.rst b/docs/source/introduction.rst
index 64de192..ee98415 100644
--- a/docs/source/introduction.rst
+++ b/docs/source/introduction.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Introduction
 ============
 
diff --git a/docs/source/irq.rst b/docs/source/irq.rst
index e01f862..ccb3ab5 100644
--- a/docs/source/irq.rst
+++ b/docs/source/irq.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Interrupts (IRQ)
 ================
 
diff --git a/docs/source/maximum-ratings.rst b/docs/source/maximum-ratings.rst
index 05aded7..65901b1 100644
--- a/docs/source/maximum-ratings.rst
+++ b/docs/source/maximum-ratings.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Absolute maximum ratings
 ========================
 
diff --git a/docs/source/memory-mapped-io-summary.rst b/docs/source/memory-mapped-io-summary.rst
index 3f66741..9d03f81 100644
--- a/docs/source/memory-mapped-io-summary.rst
+++ b/docs/source/memory-mapped-io-summary.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Memory Mapped I/O summary
 =========================
 
diff --git a/docs/source/pinout.rst b/docs/source/pinout.rst
index 3bd3393..0fe87c0 100644
--- a/docs/source/pinout.rst
+++ b/docs/source/pinout.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Pinout description
 ==================
 
diff --git a/docs/source/programming.rst b/docs/source/programming.rst
index 4fa31f4..ea2c4ee 100644
--- a/docs/source/programming.rst
+++ b/docs/source/programming.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Programming
 ===========
 
diff --git a/docs/source/qspi-flash.rst b/docs/source/qspi-flash.rst
index a605bba..47d8b1f 100644
--- a/docs/source/qspi-flash.rst
+++ b/docs/source/qspi-flash.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 QSPI Flash interface
 ====================
 
diff --git a/docs/source/quick-start.rst b/docs/source/quick-start.rst
index d9b43cf..194c15e 100644
--- a/docs/source/quick-start.rst
+++ b/docs/source/quick-start.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 User project quick start guide
 ==============================
 
diff --git a/docs/source/references.rst b/docs/source/references.rst
index 03c48a6..c78d989 100644
--- a/docs/source/references.rst
+++ b/docs/source/references.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 References
 ==========
 
diff --git a/docs/source/spi.rst b/docs/source/spi.rst
index bb1ca89..6111afd 100644
--- a/docs/source/spi.rst
+++ b/docs/source/spi.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 SPI Controller
 ==============
 
diff --git a/docs/source/sram.rst b/docs/source/sram.rst
index ebe74dc..1546400 100644
--- a/docs/source/sram.rst
+++ b/docs/source/sram.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 SRAM
 ====
 
diff --git a/docs/source/supplementary-figures.rst b/docs/source/supplementary-figures.rst
index 5568f2b..fd63346 100644
--- a/docs/source/supplementary-figures.rst
+++ b/docs/source/supplementary-figures.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 Supplementary figures
 =====================
 
diff --git a/docs/source/uart.rst b/docs/source/uart.rst
index c621529..ae12c7a 100644
--- a/docs/source/uart.rst
+++ b/docs/source/uart.rst
@@ -1,3 +1,23 @@
+.. raw:: html
+
+   <!---
+   # SPDX-FileCopyrightText: 2020 Efabless Corporation
+   #
+   # 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.
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   -->
+
 UART interface
 ==============