Change to Apache 2.0 License (#1901)

26 files changed, 27 insertions, 22 deletions

diff --git a/src/test/resources/blackboxes/AdderExtModule.v b/src/test/resources/blackboxes/AdderExtModule.v
index d0313fba..ba0bd87c 100644
--- a/src/test/resources/blackboxes/AdderExtModule.v
+++ b/src/test/resources/blackboxes/AdderExtModule.v
@@ -1,4 +1,4 @@
-// See LICENSE for license details.
+// SPDX-License-Identifier: Apache-2.0
 module AdderExtModule(
   input [15:0] foo,
   output [15:0] bar
diff --git a/src/test/resources/blackboxes/LargeParam.v b/src/test/resources/blackboxes/LargeParam.v
index 3a0dcd9e..94c903ff 100644
--- a/src/test/resources/blackboxes/LargeParam.v
+++ b/src/test/resources/blackboxes/LargeParam.v
@@ -1,4 +1,4 @@
-// See LICENSE for license details.
+// SPDX-License-Identifier: Apache-2.0
 module LargeParamUnsigned #(parameter DATA=0, WIDTH=1) (
   output [WIDTH-1:0] out
 );
diff --git a/src/test/resources/blackboxes/LargeParamTester.fir b/src/test/resources/blackboxes/LargeParamTester.fir
index 29027c36..81d9dd2b 100644
--- a/src/test/resources/blackboxes/LargeParamTester.fir
+++ b/src/test/resources/blackboxes/LargeParamTester.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit LargeParamTester :
   extmodule LargeParam :
     output out : UInt<1>
diff --git a/src/test/resources/blackboxes/MultiExtModuleTester.fir b/src/test/resources/blackboxes/MultiExtModuleTester.fir
index 82ac172f..3acdd9b3 100644
--- a/src/test/resources/blackboxes/MultiExtModuleTester.fir
+++ b/src/test/resources/blackboxes/MultiExtModuleTester.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit MultiExtModuleTester :
   extmodule SimpleExtModule :
     input foo : UInt<16>
diff --git a/src/test/resources/blackboxes/ParameterizedExtModule.v b/src/test/resources/blackboxes/ParameterizedExtModule.v
index 28635b6c..f7578091 100644
--- a/src/test/resources/blackboxes/ParameterizedExtModule.v
+++ b/src/test/resources/blackboxes/ParameterizedExtModule.v
@@ -1,4 +1,4 @@
-// See LICENSE for license details.
+// SPDX-License-Identifier: Apache-2.0
 module ParameterizedExtModule(
   input [15:0] foo,
   output [15:0] bar
diff --git a/src/test/resources/blackboxes/ParameterizedExtModuleTester.fir b/src/test/resources/blackboxes/ParameterizedExtModuleTester.fir
index b6771bd5..9e33e1eb 100644
--- a/src/test/resources/blackboxes/ParameterizedExtModuleTester.fir
+++ b/src/test/resources/blackboxes/ParameterizedExtModuleTester.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit ParameterizedExtModuleTester :
   extmodule ParameterizedExtModule_1 :
     input foo : UInt<16>
diff --git a/src/test/resources/blackboxes/ParameterizedViaHeaderAdderExtModule.v b/src/test/resources/blackboxes/ParameterizedViaHeaderAdderExtModule.v
index fcba38d5..1042ef54 100644
--- a/src/test/resources/blackboxes/ParameterizedViaHeaderAdderExtModule.v
+++ b/src/test/resources/blackboxes/ParameterizedViaHeaderAdderExtModule.v
@@ -1,4 +1,4 @@
-// See LICENSE for license details.
+// SPDX-License-Identifier: Apache-2.0
 module ParameterizedViaHeaderAdderExtModule(
   input [15:0] foo,
   output [15:0] bar
diff --git a/src/test/resources/blackboxes/RenamedExtModuleTester.fir b/src/test/resources/blackboxes/RenamedExtModuleTester.fir
index 37338c9f..a5979d59 100644
--- a/src/test/resources/blackboxes/RenamedExtModuleTester.fir
+++ b/src/test/resources/blackboxes/RenamedExtModuleTester.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit RenamedExtModuleTester :
   extmodule ThisIsJustTheFirrtlName :
     input foo : UInt<16>
diff --git a/src/test/resources/blackboxes/SimpleExtModule.v b/src/test/resources/blackboxes/SimpleExtModule.v
index 127291ca..586003bd 100644
--- a/src/test/resources/blackboxes/SimpleExtModule.v
+++ b/src/test/resources/blackboxes/SimpleExtModule.v
@@ -1,4 +1,4 @@
-// See LICENSE for license details.
+// SPDX-License-Identifier: Apache-2.0
 module SimpleExtModule(
   input [15:0] foo,
   output [15:0] bar
diff --git a/src/test/resources/blackboxes/SimpleExtModuleTester.fir b/src/test/resources/blackboxes/SimpleExtModuleTester.fir
index 7118ec9f..892f593b 100644
--- a/src/test/resources/blackboxes/SimpleExtModuleTester.fir
+++ b/src/test/resources/blackboxes/SimpleExtModuleTester.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit SimpleExtModuleTester :
   extmodule SimpleExtModule :
     input foo : UInt<16>
diff --git a/src/test/resources/blackboxes/VerilogHeaderFile.vh b/src/test/resources/blackboxes/VerilogHeaderFile.vh
index 0844c95f..122732a7 100644
--- a/src/test/resources/blackboxes/VerilogHeaderFile.vh
+++ b/src/test/resources/blackboxes/VerilogHeaderFile.vh
@@ -1,4 +1,4 @@
-// See LICENSE for license details.
+// SPDX-License-Identifier: Apache-2.0
 `ifndef _parameters_vh_
 `define _parameters_vh_
 parameter VALUE = 2;
diff --git a/src/test/resources/features/AsyncResetTester.fir b/src/test/resources/features/AsyncResetTester.fir
index 15efbd8d..3066e4bb 100644
--- a/src/test/resources/features/AsyncResetTester.fir
+++ b/src/test/resources/features/AsyncResetTester.fir
@@ -1,4 +1,4 @@
-
+; SPDX-License-Identifier: Apache-2.0
 circuit AsyncResetTester :
   module AsyncResetTester :
     input clock : Clock
diff --git a/src/test/resources/features/ChirrtlMems.fir b/src/test/resources/features/ChirrtlMems.fir
index de5b3cf3..fa9ec1c0 100644
--- a/src/test/resources/features/ChirrtlMems.fir
+++ b/src/test/resources/features/ChirrtlMems.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit ChirrtlMems :
   module ChirrtlMems :
     input clock : Clock
diff --git a/src/test/resources/features/CustomTransform.fir b/src/test/resources/features/CustomTransform.fir
index de00f261..99cb1800 100644
--- a/src/test/resources/features/CustomTransform.fir
+++ b/src/test/resources/features/CustomTransform.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit CustomTransform :
   ; Replaced in custom transform by an implementation
   extmodule Delay :
diff --git a/src/test/resources/features/EmptyChirrtlMem.fir b/src/test/resources/features/EmptyChirrtlMem.fir
index 036d3830..56f3798e 100644
--- a/src/test/resources/features/EmptyChirrtlMem.fir
+++ b/src/test/resources/features/EmptyChirrtlMem.fir
@@ -1,3 +1,5 @@
+; SPDX-License-Identifier: Apache-2.0
+
 circuit Queue :
   module Queue :
     input clock : Clock
diff --git a/src/test/resources/features/HasDeadCode.fir b/src/test/resources/features/HasDeadCode.fir
index db87ff7a..a634388f 100644
--- a/src/test/resources/features/HasDeadCode.fir
+++ b/src/test/resources/features/HasDeadCode.fir
@@ -1,3 +1,4 @@
+; SPDX-License-Identifier: Apache-2.0
 circuit HasDeadCode :
   module HasDeadCode :
     input i : UInt<1>
diff --git a/src/test/resources/features/HasLoops.fir b/src/test/resources/features/HasLoops.fir
index e238761d..341937fa 100644
--- a/src/test/resources/features/HasLoops.fir
+++ b/src/test/resources/features/HasLoops.fir
@@ -1,3 +1,4 @@
+; SPDX-License-Identifier: Apache-2.0
 circuit HasLoops :
   module HasLoops :
     input i : UInt<1>
diff --git a/src/test/resources/features/NestedSubAccessTester.fir b/src/test/resources/features/NestedSubAccessTester.fir
index 84b4cfbe..f81ab251 100644
--- a/src/test/resources/features/NestedSubAccessTester.fir
+++ b/src/test/resources/features/NestedSubAccessTester.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit NestedSubAccessTester :
   module NestedSubAccess :
     input foo : UInt<1>[4]
diff --git a/src/test/resources/features/NodeType.fir b/src/test/resources/features/NodeType.fir
index fe48871b..f55a30ce 100644
--- a/src/test/resources/features/NodeType.fir
+++ b/src/test/resources/features/NodeType.fir
@@ -1,3 +1,4 @@
+; SPDX-License-Identifier: Apache-2.0
 circuit NodeType :
   module NodeType :
     input clock : Clock
diff --git a/src/test/resources/features/PresetTester.fir b/src/test/resources/features/PresetTester.fir
index a2395c99..22bdc5a6 100644
--- a/src/test/resources/features/PresetTester.fir
+++ b/src/test/resources/features/PresetTester.fir
@@ -1,4 +1,4 @@
-
+; SPDX-License-Identifier: Apache-2.0
 circuit PresetTester :
 
   module Test :
diff --git a/src/test/resources/features/Printf.fir b/src/test/resources/features/Printf.fir
index 5e065b9c..cc0aec49 100644
--- a/src/test/resources/features/Printf.fir
+++ b/src/test/resources/features/Printf.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit Printf : 
   module Printf : 
     input clock : Clock
diff --git a/src/test/resources/features/ZeroPortMem.fir b/src/test/resources/features/ZeroPortMem.fir
index 96327f5c..1ae4f68c 100644
--- a/src/test/resources/features/ZeroPortMem.fir
+++ b/src/test/resources/features/ZeroPortMem.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit ZeroPortMem :
   module ZeroPortMem :
     input clock : Clock
diff --git a/src/test/resources/features/ZeroWidthMem.fir b/src/test/resources/features/ZeroWidthMem.fir
index a909b041..018cc25d 100644
--- a/src/test/resources/features/ZeroWidthMem.fir
+++ b/src/test/resources/features/ZeroWidthMem.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit ZeroWidthMem :
   module ZeroWidthMem :
     input clock : Clock
diff --git a/src/test/resources/firrtl/testTop.cpp b/src/test/resources/firrtl/testTop.cpp
index ba27c917..4dafd60f 100644
--- a/src/test/resources/firrtl/testTop.cpp
+++ b/src/test/resources/firrtl/testTop.cpp
@@ -1,4 +1,4 @@
-// See LICENSE for license details.
+// SPDX-License-Identifier: Apache-2.0
 
 #include <verilated.h>
 #include <iostream>
diff --git a/src/test/resources/passes/ExpandWhens/ExpandWhens.fir b/src/test/resources/passes/ExpandWhens/ExpandWhens.fir
index 291cf1b4..25706d28 100644
--- a/src/test/resources/passes/ExpandWhens/ExpandWhens.fir
+++ b/src/test/resources/passes/ExpandWhens/ExpandWhens.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit ExpandWhens :
   module ExpandWhens :
     input clock : Clock
diff --git a/src/test/resources/passes/Legalize/Legalize.fir b/src/test/resources/passes/Legalize/Legalize.fir
index 716dff83..7e538695 100644
--- a/src/test/resources/passes/Legalize/Legalize.fir
+++ b/src/test/resources/passes/Legalize/Legalize.fir
@@ -1,4 +1,4 @@
-; See LICENSE for license details.
+; SPDX-License-Identifier: Apache-2.0
 circuit Legalize :
   module Legalize :
     input clock : Clock