litex/make.py

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#!/usr/bin/env python3
import sys, os, argparse, importlib, subprocess, struct
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from mibuild.tools import write_to_file
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from migen.util.misc import autotype
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from migen.fhdl import simplify
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from misoclib.gensoc import cpuif
from misoclib.sdramphy import initsequence
import programmer
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def _get_args():
parser = argparse.ArgumentParser(formatter_class=argparse.RawDescriptionHelpFormatter,
description="""\
MiSoC - a high performance and small footprint SoC based on Migen.
This program builds and/or loads MiSoC components.
One or several actions can be specified:
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clean delete previous build(s).
build-bitstream build FPGA bitstream. Implies build-bios on targets with
integrated BIOS.
build-headers build software header files with CPU/CSR/IRQ/SDRAM_PHY definitions.
build-csr-csv save CSR map into CSV file.
build-bios build BIOS. Implies build-header.
load-bitstream load bitstream into volatile storage.
flash-bitstream load bitstream into non-volatile storage.
flash-bios load BIOS into non-volatile storage.
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all clean, build-bitstream, build-bios, flash-bitstream, flash-bios.
Load/flash actions use the existing outputs, and do not trigger new builds.
""")
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parser.add_argument("-t", "--target", default="mlabs_video", help="SoC type to build")
parser.add_argument("-s", "--sub-target", default="", help="variant of the SoC type to build")
parser.add_argument("-p", "--platform", default=None, help="platform to build for")
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parser.add_argument("-Ot", "--target-option", default=[], nargs=2, action="append", help="set target-specific option")
parser.add_argument("-X", "--external", default="", help="use external directory for targets, platforms and imports")
parser.add_argument("--csr_csv", default="csr.csv", help="CSV file to save the CSR map into")
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parser.add_argument("-d", "--decorate", default=[], action="append", help="apply simplification decorator to top-level")
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parser.add_argument("-Ob", "--build-option", default=[], nargs=2, action="append", help="set build option")
parser.add_argument("-f", "--flash-proxy-dir", default=None, help="set search directory for flash proxy bitstreams")
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parser.add_argument("action", nargs="+", help="specify an action")
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return parser.parse_args()
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def _misoc_import(default, external, name):
if external:
try:
del sys.modules[name] # force external path search
except KeyError:
pass
loader = importlib.find_loader(name, [external])
if loader is None:
# try internal import
return importlib.import_module(default + "." + name)
return loader.load_module()
else:
return importlib.import_module(default + "." + name)
if __name__ == "__main__":
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args = _get_args()
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external_target = ""
external_platform = ""
if args.external:
external_target = os.path.join(args.external, "targets")
external_platform = os.path.join(args.external, "platforms")
sys.path.insert(1, os.path.abspath(args.external))
# create top-level SoC object
target_module = _misoc_import("targets", external_target, args.target)
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if args.sub_target:
top_class = getattr(target_module, args.sub_target)
else:
top_class = target_module.default_subtarget
if args.platform is None:
platform_name = top_class.default_platform
else:
platform_name = args.platform
platform_module = _misoc_import("mibuild.platforms", external_platform, platform_name)
platform = platform_module.Platform()
if args.external:
platform.soc_ext_path = os.path.abspath(args.external)
build_name = top_class.__name__.lower() + "-" + platform_name
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top_kwargs = dict((k, autotype(v)) for k, v in args.target_option)
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soc = top_class(platform, **top_kwargs)
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soc.finalize()
# decode actions
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action_list = ["clean", "build-bitstream", "build-headers", "build-csr-csv", "build-bios",
"load-bitstream", "flash-bitstream", "flash-bios", "all"]
actions = {k: False for k in action_list}
for action in args.action:
if action in actions:
actions[action] = True
else:
print("Unknown action: "+action+". Valid actions are:")
for a in action_list:
print(" "+a)
sys.exit(1)
print("""\
__ ___ _ ____ _____
/ |/ / (_) / __/__ / ___/
/ /|_/ / / / _\ \/ _ \/ /__
/_/ /_/ /_/ /___/\___/\___/
a high performance and small footprint SoC based on Migen
====== Building for: ======
Platform: {}
Target: {}
Subtarget: {}
CPU type: {}
===========================""".format(platform_name, args.target, top_class.__name__, soc.cpu_type))
# dependencies
if actions["all"]:
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actions["clean"] = True
actions["build-bitstream"] = True
actions["build-bios"] = True
actions["flash-bitstream"] = True
actions["flash-bios"] = True
if actions["build-bitstream"] and hasattr(soc, "init_bios_memory"):
actions["build-bios"] = True
if actions["build-bios"]:
actions["build-headers"] = True
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if actions["clean"]:
subprocess.call(["rm", "-rf", "build/*"])
subprocess.call(["make", "-C", "software/libcompiler-rt", "clean"])
subprocess.call(["make", "-C", "software/libbase", "clean"])
subprocess.call(["make", "-C", "software/libnet", "clean"])
subprocess.call(["make", "-C", "software/bios", "clean"])
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if actions["build-headers"]:
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boilerplate = """/*
* Platform: {}
* Target: {}
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* Subtarget: {}
* CPU type: {}
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*/
""".format(platform_name, args.target, top_class.__name__, soc.cpu_type)
cpu_mak = cpuif.get_cpu_mak(soc.cpu_type)
write_to_file("software/include/generated/cpu.mak", cpu_mak)
linker_output_format = cpuif.get_linker_output_format(soc.cpu_type)
write_to_file("software/include/generated/output_format.ld", linker_output_format)
linker_regions = cpuif.get_linker_regions(soc.cpu_memory_regions)
write_to_file("software/include/generated/regions.ld", boilerplate + linker_regions)
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try:
flash_boot_address = soc.flash_boot_address
except AttributeError:
flash_boot_address = None
mem_header = cpuif.get_mem_header(soc.cpu_memory_regions, flash_boot_address)
write_to_file("software/include/generated/mem.h", boilerplate + mem_header)
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csr_header = cpuif.get_csr_header(soc.csr_base, soc.csrbankarray, soc.interrupt_map)
write_to_file("software/include/generated/csr.h", boilerplate + csr_header)
for sdram_phy in ["sdrphy", "ddrphy"]:
if hasattr(soc, sdram_phy):
sdram_phy_header = initsequence.get_sdram_phy_header(getattr(soc, sdram_phy))
write_to_file("software/include/generated/sdram_phy.h", boilerplate + sdram_phy_header)
if actions["build-csr-csv"]:
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csr_csv = cpuif.get_csr_csv(soc.csr_base, soc.csrbankarray)
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write_to_file(args.csr_csv, csr_csv)
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if actions["build-bios"]:
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ret = subprocess.call(["make", "-C", "software/bios"])
if ret:
raise OSError("BIOS build failed")
if actions["build-bitstream"]:
if hasattr(soc, "init_bios_memory"):
with open("software/bios/bios.bin", "rb") as bios_file:
bios_data = []
while True:
w = bios_file.read(4)
if not w:
break
bios_data.append(struct.unpack(">I", w)[0])
soc.init_bios_memory(bios_data)
for decorator in args.decorate:
soc = getattr(simplify, decorator)(soc)
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build_kwargs = dict((k, autotype(v)) for k, v in args.build_option)
platform.build(soc, build_name=build_name, **build_kwargs)
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if actions["load-bitstream"] or actions["flash-bitstream"] or actions["flash-bios"]:
prog = programmer.create_programmer(platform.name, args.flash_proxy_dir)
if actions["load-bitstream"]:
prog.load_bitstream("build/" + build_name + platform.bitstream_ext)
if actions["flash-bitstream"]:
if prog.needs_bitreverse:
flashbit = "build/" + build_name + ".fpg"
subprocess.call(["tools/byteswap",
"build/" + build_name + ".bin",
flashbit])
else:
flashbit = "build/" + build_name + ".bin"
prog.flash(0, flashbit)
if actions["flash-bios"]:
prog.flash(soc.cpu_reset_address, "software/bios/bios.bin")