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Merge pull request #30 from enjoy-digital/yosys_template

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Yosys/Build template update
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Sean Cross 2020-01-03 10:16:51 +08:00 committed by GitHub
commit 4f24c432a8
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1 changed files with 20 additions and 6 deletions
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26
hw/foboot-bitstream.py
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@ -251,25 +251,39 @@ class BaseSoC(SoCCore, AutoDoc):
("0x3f", "?", "Unknown model"),
])
# Override default LiteX's yosys/build templates
assert hasattr(platform.toolchain, "yosys_template")
assert hasattr(platform.toolchain, "build_template")
platform.toolchain.yosys_template = [
"{read_files}",
"attrmap -tocase keep -imap keep=\"true\" keep=1 -imap keep=\"false\" keep=0 -remove keep=0",
"synth_ice40 -json {build_name}.json -top {build_name}",
]
platform.toolchain.build_template = [
"yosys -q -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}",
"icepack {build_name}.txt {build_name}.bin"
]
# Add "-relut -dffe_min_ce_use 4" to the synth_ice40 command.
# The "-reult" adds an additional LUT pass to pack more stuff in,
# and the "-dffe_min_ce_use 4" flag prevents Yosys from generating a
# Clock Enable signal for a LUT that has fewer than 4 flip-flops.
# This increases density, and lets us use the FPGA more efficiently.
platform.toolchain.nextpnr_yosys_template[2] += " -relut -abc2 -dffe_min_ce_use 4 -relut"
platform.toolchain.yosys_template[2] += " -relut -abc2 -dffe_min_ce_use 4 -relut"
if use_dsp:
platform.toolchain.nextpnr_yosys_template[2] += " -dsp"
platform.toolchain.yosys_template[2] += " -dsp"
# Disable final deep-sleep power down so firmware words are loaded
# onto softcore's address bus.
platform.toolchain.build_template[3] = "icepack -s {build_name}.txt {build_name}.bin"
platform.toolchain.nextpnr_build_template[2] = "icepack -s {build_name}.txt {build_name}.bin"
platform.toolchain.build_template[2] = "icepack -s {build_name}.txt {build_name}.bin"
# Allow us to set the nextpnr seed
platform.toolchain.nextpnr_build_template[1] += " --seed " + str(pnr_seed)
platform.toolchain.build_template[1] += " --seed " + str(pnr_seed)
if placer is not None:
platform.toolchain.nextpnr_build_template[1] += " --placer {}".format(placer)
platform.toolchain.build_template[1] += " --placer {}".format(placer)
def copy_memory_file(self, src):
import os