add CONTRIBUTORS file and add copyright header to all files.

CONTRIBUTORS

@@ -0,0 +1,18 @@
+LiteX ecosystem would not exist without the collaborative work of contributors! Here is below the
+list of all the LiteScope contributors.
+
+In the source code, each file list the main authors/contributors:
+- author(s) that created the initial content.
+- contributor(s) that added essential features/improvements.
+
+If you think you should be in this list and don't find yourself, write to florent@enjoy-digital.fr
+and we'll fix it!
+
+Contributors:
+Copyright (c) 2018 bunnie <bunnie@kosagi.com>
+Copyright (c) 2018 Felix Held <felix-github@felixheld.de>
+Copyright (c) 2015-2019 Florent Kermarrec <florent@enjoy-digital.fr>
+Copyright (c) 2019 kees.jongenburger <kees.jongenburger@gmail.com>
+Copyright (c) 2018 Sean Cross <sean@xobs.io>
+Copyright (c) 2016 Tim Ansell <mithro@mithis.com>
+Copyright (c) 2016 Tim 'mithro' Ansell <mithro@mithis.com>

examples/fast_scope_arty.py

@@ -1,5 +1,8 @@
 #!/usr/bin/env python3
 
+# This file is Copyright (c) 2019 kees.jongenburger <kees.jongenburger@gmail.com>
+# License: BSD
+
 from migen import *
 
 from litex.boards.platforms import arty
@@ -18,8 +21,8 @@ from litescope import LiteScopeIO, LiteScopeAnalyzer
 # Those are the fast and not so well protected pins.
 _serdes_io = [
     ("serdes_io", 0,
-        Subsignal("d0", Pins("E15"),IOStandard("LVCMOS33")), 
-        Subsignal("d1", Pins("E16"),IOStandard("LVCMOS33")), 
+        Subsignal("d0", Pins("E15"),IOStandard("LVCMOS33")),
+        Subsignal("d1", Pins("E16"),IOStandard("LVCMOS33")),
         Subsignal("d2", Pins("D15"),IOStandard("LVCMOS33")),
         Subsignal("d3", Pins("C15"),IOStandard("LVCMOS33")),
         Subsignal("d4", Pins("J17"),IOStandard("LVCMOS33")),
@@ -34,9 +37,9 @@ class SerdesInputSignal(Module):
 
         self.signals = Signal(8)
         #
-        # Based on a 100MHz input clock and a 400MHz sample clock and 
+        # Based on a 100MHz input clock and a 400MHz sample clock and
         # Measuring at ddr speed we are sampling at 800Mhz
-        # 
+        #
         self.specials += Instance("ISERDESE2",
                 p_DATA_WIDTH=8, p_DATA_RATE="DDR",
                 p_SERDES_MODE="MASTER", p_INTERFACE_TYPE="NETWORKING",
@@ -98,7 +101,7 @@ class LiteScopeSoC(SoCCore):
 
     def __init__(self, platform):
         sys_clk_freq = int(100e6)
-    
+
         SoCCore.__init__(self, platform, sys_clk_freq,
             cpu_type=None,
             csr_data_width=32,

examples/make.py

@@ -1,5 +1,8 @@
 #!/usr/bin/env python3
 
+# This file is Copyright (c) 2015-2019 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 import sys
 import os
 import argparse

examples/targets/core.py

@@ -1,3 +1,6 @@
+# This file is Copyright (c) 2015-2018 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 from migen import *
 from migen.genlib.io import CRG
 

examples/targets/simple.py

@@ -1,3 +1,6 @@
+# This file is Copyright (c) 2015-2018 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 from migen import *
 from migen.genlib.io import CRG
 

examples/test/test_analyzer_counter.py

@@ -1,5 +1,8 @@
 #!/usr/bin/env python3
 
+# This file is Copyright (c) 2018 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 from litex import RemoteClient
 
 from litescope import LiteScopeAnalyzerDriver

examples/test/test_analyzer_wishbone.py

@@ -1,5 +1,8 @@
 #!/usr/bin/env python3
 
+# This file is Copyright (c) 2018 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 from litex import RemoteClient
 
 from litescope import LiteScopeAnalyzerDriver

examples/test/test_fast_scope_arty.py

@@ -1,5 +1,8 @@
 #!/usr/bin/env python3
 
+# This file is Copyright (c) 2019 kees.jongenburger <kees.jongenburger@gmail.com>
+# License: BSD
+
 from litex import RemoteClient
 
 from litescope import LiteScopeAnalyzerDriver
@@ -19,7 +22,7 @@ analyzer.upload()
 
 #
 # Convert parallel input back to a flaten view (e.g. the 8 bits values are flattened)
-# 
+#
 analyzer.save("dump.vcd",flatten=True)
 
 # # #

examples/test/test_identifier.py

@@ -1,5 +1,8 @@
 #!/usr/bin/env python3
 
+# This file is Copyright (c) 2015-2018 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 from litex import RemoteClient
 
 wb = RemoteClient()

examples/test/test_io.py

@@ -1,5 +1,8 @@
 #!/usr/bin/env python3
 
+# This file is Copyright (c) 2015-2018 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 import time
 
 from litex import RemoteClient

litescope/core.py

@@ -1,3 +1,8 @@
+# This file is Copyright (c) 2016-2018 Florent Kermarrec <florent@enjoy-digital.fr>
+# This file is Copyright (c) 2018 bunnie <bunnie@kosagi.com>
+# This file is Copyright (c) 2016 Tim 'mithro' Ansell <mithro@mithis.com>
+# License: BSD
+
 from migen import *
 from migen.genlib.misc import WaitTimer
 from migen.genlib.cdc import MultiReg, PulseSynchronizer

litescope/software/driver/analyzer.py

@@ -1,3 +1,8 @@
+# This file is Copyright (c) 2015-2018 Florent Kermarrec <florent@enjoy-digital.fr>
+# This file is Copyright (c) 2019 kees.jongenburger <kees.jongenburger@gmail.com>
+# This file is Copyright (c) 2018 Sean Cross <sean@xobs.io>
+# License: BSD
+
 import os
 import sys
 

litescope/software/driver/io.py

@@ -1,3 +1,6 @@
+# This file is Copyright (c) 2015-2017 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 class LiteScopeIODriver:
     def __init__(self, regs, name):
         self.regs = regs

litescope/software/dump/common.py

@@ -1,3 +1,7 @@
+# This file is Copyright (c) 2015-2019 Florent Kermarrec <florent@enjoy-digital.fr>
+# This file is Copyright (c) 2019 kees.jongenburger <kees.jongenburger@gmail.com>
+# License: BSD
+
 def dec2bin(d, width=0):
     if d == "x":
         return "x"*width

litescope/software/dump/csv.py

@@ -1,3 +1,6 @@
+# This file is Copyright (c) 2015 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 from litescope.software.dump.common import Dump, dec2bin
 
 

litescope/software/dump/python.py

@@ -1,3 +1,6 @@
+# This file is Copyright (c) 2015 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 from litescope.software.dump.common import Dump
 
 

litescope/software/dump/sigrok.py

@@ -1,3 +1,6 @@
+# This file is Copyright (c) 2015-2017 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 import os
 import math
 import shutil

litescope/software/dump/vcd.py

@@ -1,3 +1,6 @@
+# This file is Copyright (c) 2015-2018 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 from itertools import count
 import datetime
 from litescope.software.dump.common import Dump, dec2bin

test/test_analyzer.py

@@ -1,3 +1,6 @@
+# This file is Copyright (c) 2017-2018 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 import unittest
 
 from migen import *

test/test_dump.py

@@ -1,3 +1,6 @@
+# This file is Copyright (c) 2017 Florent Kermarrec <florent@enjoy-digital.fr>
+# License: BSD
+
 import unittest
 import os
 from math import cos, sin