From: whitequark <whitequark@whitequark.org>
Date: Fri, 6 Nov 2020 01:31:14 +0000 (+0000)
Subject: vendor.lattice_{ice40,ecp5}: clean up $verilog_initial_trigger wires.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=75e8830de406ba77f07f3aece0baa12ba93a3e67;p=nmigen.git

vendor.lattice_{ice40,ecp5}: clean up $verilog_initial_trigger wires.

These only matter in simulation and after conversion to Verilog.
During synthesis they cause Yosys to produce warnings:

  Warning: Wire $verilog_initial_trigger has an unprocessed 'init' attribute.
---

diff --git a/nmigen/vendor/lattice_ecp5.py b/nmigen/vendor/lattice_ecp5.py
index 3affa8f..2a68dad 100644
--- a/nmigen/vendor/lattice_ecp5.py
+++ b/nmigen/vendor/lattice_ecp5.py
@@ -122,6 +122,7 @@ class LatticeECP5Platform(TemplatedPlatform):
                 read_ilang {{file}}
             {% endfor %}
             read_ilang {{name}}.il
+            delete w:$verilog_initial_trigger
             {{get_override("script_after_read")|default("# (script_after_read placeholder)")}}
             synth_ecp5 {{get_override("synth_opts")|options}} -top {{name}}
             {{get_override("script_after_synth")|default("# (script_after_synth placeholder)")}}
diff --git a/nmigen/vendor/lattice_ice40.py b/nmigen/vendor/lattice_ice40.py
index d5e4dd6..4e6b282 100644
--- a/nmigen/vendor/lattice_ice40.py
+++ b/nmigen/vendor/lattice_ice40.py
@@ -124,6 +124,7 @@ class LatticeICE40Platform(TemplatedPlatform):
                 read_ilang {{file}}
             {% endfor %}
             read_ilang {{name}}.il
+            delete w:$verilog_initial_trigger
             {{get_override("script_after_read")|default("# (script_after_read placeholder)")}}
             synth_ice40 {{get_override("synth_opts")|options}} -top {{name}}
             {{get_override("script_after_synth")|default("# (script_after_synth placeholder)")}}