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build/lattice/trellis: use a single fonction to parse device

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This commit is contained in:
Florent Kermarrec 2020-01-08 19:38:27 +01:00
parent 018c7ca890
commit 83ad674feb
1 changed files with 25 additions and 21 deletions
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46
litex/build/lattice/trellis.py
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@ -74,6 +74,28 @@ def _build_yosys(template, platform, nowidelut, build_name):
)) ))
tools.write_to_file(build_name + ".ys", "\n".join(ys)) tools.write_to_file(build_name + ".ys", "\n".join(ys))
def nextpnr_ecp5_parse_device(device):
device = device.lower()
family = device.split("-")[0]
size = device.split("-")[1]
speed_grade = device.split("-")[2][0]
if speed_grade not in ["6", "7", "8"]:
raise ValueError("Invalid speed grade {}".format(speed_grade))
package = device.split("-")[2][1:]
if "256" in package:
package = "CABGA256"
elif "285" in package:
package = "CSFBGA285"
elif "381" in package:
package = "CABGA381"
elif "554" in package:
package = "CABGA554"
elif "756" in package:
package = "CABGA756"
else:
raise ValueError("Invalid package {}".format(package))
return (family, size, speed_grade, package)
nextpnr_ecp5_architectures = { nextpnr_ecp5_architectures = {
"lfe5u-25f" : "25k", "lfe5u-25f" : "25k",
"lfe5u-45f" : "45k", "lfe5u-45f" : "45k",
@ -86,22 +108,6 @@ nextpnr_ecp5_architectures = {
"lfe5um5g-85f": "um5g-85k", "lfe5um5g-85f": "um5g-85k",
} }
def nextpnr_ecp5_package(package):
if "256" in package:
return "CABGA256"
elif "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 {}".format(package))
def nextpnr_ecp5_speed_grade(package):
return package[0] if package[0] in ["6", "7", "8"] else "6"
# Script ------------------------------------------------------------------------------------------- # Script -------------------------------------------------------------------------------------------
_build_template = [ _build_template = [
@ -203,11 +209,9 @@ class LatticeTrellisToolchain:
# Generate Yosys script # Generate Yosys script
_build_yosys(self.yosys_template, platform, nowidelut, build_name) _build_yosys(self.yosys_template, platform, nowidelut, build_name)
# Translate device to Nextpnr architecture/package # Translate device to Nextpnr architecture/package/speed_grade
(family, size, package) = platform.device.split("-") (family, size, speed_grade, package) = nextpnr_ecp5_parse_device(platform.device)
architecture = nextpnr_ecp5_architectures[(family + "-" + size).lower()] architecture = nextpnr_ecp5_architectures[(family + "-" + size)]
speed_grade = nextpnr_ecp5_speed_grade(package)
package = nextpnr_ecp5_package(package)
# Generate build script # Generate build script
script = _build_script(False, self.build_template, build_name, architecture, package, script = _build_script(False, self.build_template, build_name, architecture, package,