litex/build/xilinx/platform.py

   1 # This file is Copyright (c) 2015 Sebastien Bourdeauducq <sb@m-labs.hk>
   2 # This file is Copyright (c) 2015-2018 Florent Kermarrec <florent@enjoy-digital.fr>
   3 # License: BSD
   4
   5 import os
   6
   7 from litex.build.generic_platform import GenericPlatform
   8 from litex.build.xilinx import common, vivado, ise
   9
  10
  11 class XilinxPlatform(GenericPlatform):
  12     bitstream_ext = ".bit"
  13
  14     def __init__(self, *args, toolchain="ise", **kwargs):
  15         GenericPlatform.__init__(self, *args, **kwargs)
  16         self.edifs = set()
  17         self.ips = set()
  18         if toolchain == "ise":
  19             self.toolchain = ise.XilinxISEToolchain()
  20         elif toolchain == "vivado":
  21             self.toolchain = vivado.XilinxVivadoToolchain()
  22         else:
  23             raise ValueError("Unknown toolchain")
  24
  25     def add_edif(self, filename):
  26         self.edifs.add((os.path.abspath(filename)))
  27
  28     def add_ip(self, filename):
  29         self.ips.add((os.path.abspath(filename)))
  30
  31     def get_verilog(self, *args, special_overrides=dict(), **kwargs):
  32         so = dict(common.xilinx_special_overrides)
  33         if self.device[:3] == "xc6":
  34             so.update(common.xilinx_s6_special_overrides)
  35         if self.device[:3] == "xc7":
  36             so.update(common.xilinx_s7_special_overrides)
  37         if self.device[:4] == "xcku":
  38             so.update(common.xilinx_ku_special_overrides)
  39         so.update(special_overrides)
  40         return GenericPlatform.get_verilog(self, *args,
  41             special_overrides=so, attr_translate=self.toolchain.attr_translate, **kwargs)
  42
  43     def get_edif(self, fragment, **kwargs):
  44         return GenericPlatform.get_edif(self, fragment, "UNISIMS", "Xilinx", self.device, **kwargs)
  45
  46     def build(self, *args, **kwargs):
  47         return self.toolchain.build(self, *args, **kwargs)
  48
  49     def add_period_constraint(self, clk, period):
  50         if hasattr(clk, "p"):
  51             clk = clk.p
  52         self.toolchain.add_period_constraint(self, clk, period)
  53
  54     def add_false_path_constraint(self, from_, to):
  55         if hasattr(from_, "p"):
  56             from_ = from_.p
  57         if hasattr(to, "p"):
  58             to = to.p
  59         self.toolchain.add_false_path_constraint(self, from_, to)