machxo3_sk: add MachXO3L and MachXO3LF variants.

Author: wanda-phi

amaranth_boards/machxo3_sk.py

@@ -1,16 +1,16 @@
 import os
+import argparse
 import subprocess
 
 from amaranth.build import *
 from amaranth.vendor import LatticeMachXO3LPlatform
 from .resources import *
 
 
-__all__ = ["MachXO3SKPlatform"]
+__all__ = ["MachXO3LSKPlatform", "MachXO3LFSKPlatform"]
 
 
-class MachXO3SKPlatform(LatticeMachXO3LPlatform):
-    device      = "LCMXO3LF-6900C"
+class _MachXO3SKPlatform(LatticeMachXO3LPlatform):
     package     = "BG256"
     speed       = "5"
     default_clk = "clk12"
@@ -69,6 +69,27 @@ def toolchain_program(self, products, name):
             subprocess.check_call([openFPGALoader, bitstream_filename])
 
 
+class MachXO3LSKPlatform(_MachXO3SKPlatform):
+    device      = "LCMXO3L-6900C"
+
+
+class MachXO3LFSKPlatform(_MachXO3SKPlatform):
+    device      = "LCMXO3LF-6900C"
+
+
 if __name__ == "__main__":
     from .test.blinky import *
-    MachXO3SKPlatform().build(Blinky(), do_program=True)
+
+    variants = {
+        'MachXO3L':  MachXO3LSKPlatform,
+        'MachXO3LF': MachXO3LFSKPlatform,
+    }
+
+    # Figure out which FPGA variant we want to target...
+    parser = argparse.ArgumentParser()
+    parser.add_argument('variant', choices=variants.keys())
+    parser.add_argument('toolchain', nargs="?", choices=["Trellis", "Diamond"], default="Trellis")
+    args = parser.parse_args()
+
+    platform = variants[args.variant]
+    platform(toolchain=args.toolchain).build(Blinky(), do_program=True)