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vendor._gowin: fix clock name quotes for Gowin IDE [0.5 backport] #1503

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Sep 5, 2024
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vendor._gowin: fix clock name quotes for Gowin IDE [0.5 backport] #1503

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6 changes: 4 additions & 2 deletions amaranth/vendor/_gowin.py
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Original file line number Diff line number Diff line change
Expand Up @@ -437,13 +437,15 @@ def _osc_div(self):
file delete -force {{name}}.fs
file copy -force impl/pnr/project.fs {{name}}.fs
""",
# Gowin is using neither Tcl nor the Synopsys code to parse SDC files, so the grammar
# deviates from the usual (eg. no quotes, no nested braces).
"{{name}}.sdc": r"""
// {{autogenerated}}
{% for signal, frequency in platform.iter_signal_clock_constraints() -%}
create_clock -name {{signal.name|tcl_quote}} -period {{1000000000/frequency}} [get_nets {{signal|hierarchy("/")|tcl_quote}}]
create_clock -name {{ "{" }}{{signal.name}}{{ "}" }} -period {{1000000000/frequency}} [get_nets {{signal|hierarchy("/")|tcl_quote}}]
{% endfor %}
{% for port, frequency in platform.iter_port_clock_constraints() -%}
create_clock -name {{port.name|tcl_quote}} -period {{1000000000/frequency}} [get_ports
create_clock -name {{ "{" }}{{port.name}}{{ "}" }} -period {{1000000000/frequency}} [get_ports
{{ "{" }}{{port.name}}{{ "}" }}]
{% endfor %}
{{get_override("add_constraints")|default("// (add_constraints placeholder)")}}
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