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vendor.lattice_machxo_2_3l: fix sdc generation #547

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vendor.lattice_machxo_2_3l: fix sdc generation #547

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306eb7e
vendor.lattice_{ecp5,machxo_2_3l}: fix hierarchy seperator in sdc files
anuejn Jan 1, 2021
50de645
vendor.lattice_{ecp5,machxo_2_3l}: special case quoting in sdc files
anuejn Jan 1, 2021
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7 changes: 7 additions & 0 deletions amaranth/build/plat.py
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Original file line number Diff line number Diff line change
Expand Up @@ -426,6 +426,12 @@ def tcl_escape(string):
def tcl_quote(string):
return '"' + re.sub(r"([$[\\])", r"\\\1", string) + '"'

def sdc_quote(string):
# synplify used in lattice diamond requires different quoting
# than standard tcl quoting: wrapped in curly braces but escaped
# as if wrapped in quotation marks.
return "{" + re.sub(r"([${}\\])", r"\\\1", string) + "}"

def verbose(arg):
if get_override_flag("verbose"):
return arg
Expand All @@ -448,6 +454,7 @@ def render(source, origin, syntax=None):
compiled.environment.filters["ascii_escape"] = ascii_escape
compiled.environment.filters["tcl_escape"] = tcl_escape
compiled.environment.filters["tcl_quote"] = tcl_quote
compiled.environment.filters["sdc_quote"] = sdc_quote
except jinja2.TemplateSyntaxError as e:
e.args = (f"{e.message} (at {origin}:{e.lineno})",)
raise
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5 changes: 3 additions & 2 deletions amaranth/vendor/_lattice_ecp5.py
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Expand Up @@ -234,11 +234,12 @@ class LatticeECP5Platform(TemplatedPlatform):
{{get_override("add_preferences")|default("# (add_preferences placeholder)")}}
""",
"{{name}}.sdc": r"""
set_hierarchy_separator {/}
{% for net_signal, port_signal, frequency in platform.iter_clock_constraints() -%}
{% if port_signal is not none -%}
create_clock -name {{port_signal.name|tcl_escape}} -period {{1000000000/frequency}} [get_ports {{port_signal.name|tcl_escape}}]
create_clock -name {{port_signal.name|sdc_quote}} -period {{1000000000/frequency}} [get_ports {{port_signal.name|sdc_quote}}]
{% else -%}
create_clock -name {{net_signal.name|tcl_escape}} -period {{1000000000/frequency}} [get_nets {{net_signal|hierarchy("/")|tcl_escape}}]
create_clock -name {{net_signal.name|sdc_quote}} -period {{1000000000/frequency}} [get_nets {{net_signal|hierarchy("/")|sdc_quote}}]
{% endif %}
{% endfor %}
{{get_override("add_constraints")|default("# (add_constraints placeholder)")}}
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5 changes: 3 additions & 2 deletions amaranth/vendor/_lattice_machxo_2_3l.py
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Expand Up @@ -101,11 +101,12 @@ class LatticeMachXO2Or3LPlatform(TemplatedPlatform):
{{get_override("add_preferences")|default("# (add_preferences placeholder)")}}
""",
"{{name}}.sdc": r"""
set_hierarchy_separator {/}
{% for net_signal, port_signal, frequency in platform.iter_clock_constraints() -%}
{% if port_signal is not none -%}
create_clock -name {{port_signal.name|tcl_escape}} -period {{1000000000/frequency}} [get_ports {{port_signal.name|tcl_escape}}]
create_clock -name {{port_signal.name|sdc_quote}} -period {{1000000000/frequency}} [get_ports {{port_signal.name|sdc_quote}}]
{% else -%}
create_clock -name {{net_signal.name|tcl_escape}} -period {{1000000000/frequency}} [get_nets {{net_signal|hierarchy("/")|tcl_escape}}]
create_clock -name {{net_signal.name|sdc_quote}} -period {{1000000000/frequency}} [get_nets {{net_signal|hierarchy("/")|sdc_quote}}]
{% endif %}
{% endfor %}
{{get_override("add_constraints")|default("# (add_constraints placeholder)")}}
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