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build/lattice/icestorm: refactor the build options string for yosys and NextPnr

This commit is contained in:
Gwenhael Goavec-Merou 2022-06-25 15:36:38 +02:00
parent c8b336957f
commit 04617027f4
1 changed files with 18 additions and 10 deletions
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28
litex/build/lattice/icestorm.py
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@ -31,6 +31,8 @@ class LatticeIceStormToolchain(GenericToolchain):
super().__init__()
self.yosys_template = self._yosys_template
self.build_template = self._build_template
self._synth_opts = "-dsp "
self._pnr_opts = ""
def build(self, platform, fragment,
timingstrict = False,
@ -41,6 +43,19 @@ class LatticeIceStormToolchain(GenericToolchain):
self.timingstrict = timingstrict
self.ignoreloops = ignoreloops
self.seed = seed
# Translate device to Nextpnr architecture/package
self.platform = platform # GGM: FIXME
(_, self.architecture, self.package) = self.parse_device()
# NextPnr options
self._pnr_opts += " --pre-pack {build_name}_pre_pack.py \
--{architecture} --package {package} {timefailarg} {ignoreloops} --seed {seed}".format(
build_name = kwargs["build_name"] if "build_name" in kwargs else "top", # FIXME
architecture = self.architecture,
package = self.package,
timefailarg = "--timing-allow-fail " if not self.timingstrict else "",
ignoreloops = "--ignore-loops " if self.ignoreloops else "",
seed = self.seed)
return self._build(platform, fragment, **kwargs)
@ -87,7 +102,7 @@ class LatticeIceStormToolchain(GenericToolchain):
"{read_files}",
"verilog_defaults -pop",
"attrmap -tocase keep -imap keep=\"true\" keep=1 -imap keep=\"false\" keep=0 -remove keep=0",
"synth_ice40 {synth_opts} -json {build_name}.json -top {build_name} -dsp",
"synth_ice40 {synth_opts} -json {build_name}.json -top {build_name}",
]
# Project (.ys) --------------------------------------------------------------------------------
@ -106,14 +121,11 @@ class LatticeIceStormToolchain(GenericToolchain):
_build_template = [
"yosys -l {build_name}.rpt {build_name}.ys",
"nextpnr-ice40 --json {build_name}.json --pcf {build_name}.pcf --asc {build_name}.txt \
--pre-pack {build_name}_pre_pack.py --{architecture} --package {package} {timefailarg} {ignoreloops} --seed {seed}",
"nextpnr-ice40 --json {build_name}.json --pcf {build_name}.pcf --asc {build_name}.txt {pnr_opts}",
"icepack -s {build_name}.txt {build_name}.bin"
]
def build_script(self):
# Translate device to Nextpnr architecture/package
(family, architecture, package) = self.parse_device()
if sys.platform in ("win32", "cygwin"):
script_ext = ".bat"
@ -128,12 +140,8 @@ class LatticeIceStormToolchain(GenericToolchain):
s_fail = s + "{fail_stmt}\n" # Required so Windows scripts fail early.
script_contents += s_fail.format(
build_name = self._build_name,
architecture = architecture,
package = package,
timefailarg = "--timing-allow-fail" if not self.timingstrict else "",
ignoreloops = "--ignore-loops" if self.ignoreloops else "",
fail_stmt = fail_stmt,
seed = self.seed)
pnr_opts = self._pnr_opts)
script_file = "build_" + self._build_name + script_ext
tools.write_to_file(script_file, script_contents, force_unix=False)