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build/lattice/trellis: add package support

This commit is contained in:
Florent Kermarrec 2019-03-01 15:20:02 +01:00
parent 1b34c07da9
commit 5ef28bdf75
1 changed files with 17 additions and 3 deletions
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20
litex/build/lattice/trellis.py
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@ -28,6 +28,18 @@ nextpnr_ecp5_architectures = {
} }
def nextpnr_ecp5_package(package):
if "285" in package:
return "CSFBGA285"
elif "381" in package:
return "CABGA381"
elif "554" in package:
return "CABGA554"
elif "756" in package:
return "CABGA756"
raise ValueError("Unknown package")
def _format_constraint(c): def _format_constraint(c):
if isinstance(c, Pins): if isinstance(c, Pins):
return ("LOCATE COMP ", " SITE " + "\"" + c.identifiers[0] + "\"") return ("LOCATE COMP ", " SITE " + "\"" + c.identifiers[0] + "\"")
@ -60,7 +72,7 @@ def _build_lpf(named_sc, named_pc):
def _build_script(source, build_template, build_name, architecture, def _build_script(source, build_template, build_name, architecture,
freq_constraint): package, freq_constraint):
if sys.platform in ("win32", "cygwin"): if sys.platform in ("win32", "cygwin"):
script_ext = ".bat" script_ext = ".bat"
build_script_contents = "@echo off\nrem Autogenerated by Migen\n\n" build_script_contents = "@echo off\nrem Autogenerated by Migen\n\n"
@ -74,6 +86,7 @@ def _build_script(source, build_template, build_name, architecture,
s_fail = s + "{fail_stmt}\n" # Required so Windows scripts fail early. s_fail = s + "{fail_stmt}\n" # Required so Windows scripts fail early.
build_script_contents += s_fail.format(build_name=build_name, build_script_contents += s_fail.format(build_name=build_name,
architecture=architecture, architecture=architecture,
package=package,
freq_constraint=freq_constraint, freq_constraint=freq_constraint,
fail_stmt=fail_stmt) fail_stmt=fail_stmt)
@ -129,7 +142,7 @@ class LatticeTrellisToolchain:
self.build_template = [ self.build_template = [
"yosys -q -l {build_name}.rpt {build_name}.ys", "yosys -q -l {build_name}.rpt {build_name}.ys",
"nextpnr-ecp5 --json {build_name}.json --lpf {build_name}.lpf --textcfg {build_name}.config --{architecture} --freq {freq_constraint}", "nextpnr-ecp5 --json {build_name}.json --lpf {build_name}.lpf --textcfg {build_name}.config --{architecture} --package {package} --freq {freq_constraint}",
"ecppack {build_name}.config {build_name}.bit" "ecppack {build_name}.config {build_name}.bit"
] ]
@ -168,11 +181,12 @@ class LatticeTrellisToolchain:
# transform platform.device to nextpnr's architecture # transform platform.device to nextpnr's architecture
(family, size, package) = platform.device.split("-") (family, size, package) = platform.device.split("-")
architecture = nextpnr_ecp5_architectures[(family + "-" + size).lower()] architecture = nextpnr_ecp5_architectures[(family + "-" + size).lower()]
package = nextpnr_ecp5_package(package)
freq_constraint = str(max(self.freq_constraints.values(), freq_constraint = str(max(self.freq_constraints.values(),
default=0.0)) default=0.0))
script = _build_script(False, self.build_template, build_name, script = _build_script(False, self.build_template, build_name,
architecture, freq_constraint) architecture, package, freq_constraint)
# run scripts # run scripts
if run: if run: