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build/microsemi/libero_soc: add additional_timing_constraints

This commit is contained in:
Florent Kermarrec 2018-11-23 09:04:42 +01:00
parent b166882308
commit a98e1ad689
1 changed files with 5 additions and 2 deletions
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7
litex/build/microsemi/libero_soc.py
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@ -142,7 +142,7 @@ def _build_tcl(platform, sources, build_dir, build_name):
tools.write_to_file(build_name + ".tcl", "\n".join(tcl))
def _build_sdc(vns, clocks, false_paths, build_name):
def _build_timing_sdc(vns, clocks, false_paths, build_name, additional_timing_constraints):
sdc = []
for clk, period in sorted(clocks.items(), key=lambda x: x[0].duid):
@ -158,6 +158,7 @@ def _build_sdc(vns, clocks, false_paths, build_name):
"-asynchronous".format(from_=from_, to=to))
# generate sdc
sdc += additional_timing_constraints
tools.write_to_file(build_name + ".sdc", "\n".join(sdc))
def _build_script(build_name, device, toolchain_path, ver=None):
@ -206,6 +207,7 @@ class MicrosemiLiberoSoCPolarfireToolchain:
self.false_paths = set()
self.additional_io_constraints = []
self.additional_fp_constraints = []
self.additional_timing_constraints = []
def build(self, platform, fragment, build_dir="build", build_name="top",
toolchain_path=None, run=False, **kwargs):
@ -234,7 +236,8 @@ class MicrosemiLiberoSoCPolarfireToolchain:
_build_fp_pdc(build_name, self.additional_fp_constraints)
# generate design timing constraints (sdc)
_build_sdc(top_output.ns, self.clocks, self.false_paths, build_name)
_build_timing_sdc(top_output.ns, self.clocks, self.false_paths, build_name,
self.additional_timing_constraints)
# generate build script
script = _build_script(build_name, platform.device, toolchain_path)