diff --git a/BUILD.gn b/BUILD.gn
index c215a5a..3c1c0fd 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1,16 +1,8 @@
 # Copyright 2018 The Hafnium Authors.
 #
-# 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
-#
-#     https://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.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/BSD-3-Clause.
 
 import("//build/toolchain/embedded.gni")
 import("//build/toolchain/host.gni")
diff --git a/LICENSE b/LICENSE
index d645695..180e4ed 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,202 +1,27 @@
+Copyright 2020 The Hafnium Authors
 
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
 
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of the copyright holder nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
 
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-   distributed under the License is distributed on an "AS IS" BASIS,
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+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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diff --git a/aem_v8a_fvp/BUILD.gn b/aem_v8a_fvp/BUILD.gn
index 140bf9e..ac39689 100644
--- a/aem_v8a_fvp/BUILD.gn
+++ b/aem_v8a_fvp/BUILD.gn
@@ -1,16 +1,8 @@
 # Copyright 2018 The Hafnium Authors.
 #
-# 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
-#
-#     https://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.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/BSD-3-Clause.
 
 source_set("aem_v8a_fvp") {
 }
diff --git a/android_aarch64/BUILD.gn b/android_aarch64/BUILD.gn
index b8bff16..1983fe3 100644
--- a/android_aarch64/BUILD.gn
+++ b/android_aarch64/BUILD.gn
@@ -1,16 +1,8 @@
 # Copyright 2020 The Hafnium Authors.
 #
-# 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
-#
-#     https://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.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/BSD-3-Clause.
 
 source_set("android_aarch64") {
 }
diff --git a/qemu_aarch64/BUILD.gn b/qemu_aarch64/BUILD.gn
index a477c50..1a14312 100644
--- a/qemu_aarch64/BUILD.gn
+++ b/qemu_aarch64/BUILD.gn
@@ -1,16 +1,8 @@
 # Copyright 2018 The Hafnium Authors.
 #
-# 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
-#
-#     https://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.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/BSD-3-Clause.
 
 source_set("qemu_aarch64") {
 }
diff --git a/rpi/BUILD.gn b/rpi/BUILD.gn
index fb7d701..c6e03cf 100644
--- a/rpi/BUILD.gn
+++ b/rpi/BUILD.gn
@@ -1,16 +1,8 @@
 # Copyright 2019 The Hafnium Authors.
 #
-# 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
-#
-#     https://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.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/BSD-3-Clause.
 
 import("args.gni")
 
diff --git a/rpi/args.gni b/rpi/args.gni
index c322192..0f92f08 100644
--- a/rpi/args.gni
+++ b/rpi/args.gni
@@ -1,16 +1,8 @@
 # Copyright 2019 The Hafnium Authors.
 #
-# 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
-#
-#     https://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.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/BSD-3-Clause.
 
 declare_args() {
   gpio_base_address = 0
diff --git a/rpi/mini_uart.c b/rpi/mini_uart.c
index cb23ce6..c43a1d0 100644
--- a/rpi/mini_uart.c
+++ b/rpi/mini_uart.c
@@ -1,17 +1,9 @@
 /*
  * Copyright 2019 The Hafnium Authors.
  *
- * 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
- *
- *     https://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.
+ * Use of this source code is governed by a BSD-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/BSD-3-Clause.
  */
 
 #include "hf/io.h"
diff --git a/rpi4/BUILD.gn b/rpi4/BUILD.gn
index bf974e6..6decd71 100644
--- a/rpi4/BUILD.gn
+++ b/rpi4/BUILD.gn
@@ -1,16 +1,8 @@
 # Copyright 2019 The Hafnium Authors.
 #
-# 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
-#
-#     https://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.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/BSD-3-Clause.
 
 source_set("rpi4") {
 }