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 # XilinxPlatform -----------------------------------------------------------------------------------
  11
  12 class XilinxPlatform(GenericPlatform):
  13     bitstream_ext = ".bit"
  14
  15     def __init__(self, *args, toolchain="ise", **kwargs):
  16         GenericPlatform.__init__(self, *args, **kwargs)
  17         self.edifs = set()
  18         self.ips   = set()
  19         if toolchain == "ise":
  20             self.toolchain = ise.XilinxISEToolchain()
  21         elif toolchain == "vivado":
  22             self.toolchain = vivado.XilinxVivadoToolchain()
  23         else:
  24             raise ValueError("Unknown toolchain")
  25
  26     def add_edif(self, filename):
  27         self.edifs.add((os.path.abspath(filename)))
  28
  29     def add_ip(self, filename):
  30         self.ips.add((os.path.abspath(filename)))
  31
  32     def get_verilog(self, *args, special_overrides=dict(), **kwargs):
  33         so = dict(common.xilinx_special_overrides)
  34         if self.device[:3] == "xc6":
  35             so.update(common.xilinx_s6_special_overrides)
  36         if self.device[:3] == "xc7":
  37             so.update(common.xilinx_s7_special_overrides)
  38         if self.device[:4] == "xcku":
  39             so.update(common.xilinx_us_special_overrides)
  40         so.update(special_overrides)
  41         return GenericPlatform.get_verilog(self, *args, special_overrides=so,
  42             attr_translate=self.toolchain.attr_translate, **kwargs)
  43
  44     def get_edif(self, fragment, **kwargs):
  45         return GenericPlatform.get_edif(self, fragment, "UNISIMS", "Xilinx", self.device, **kwargs)
  46
  47     def build(self, *args, **kwargs):
  48         return self.toolchain.build(self, *args, **kwargs)
  49
  50     def add_period_constraint(self, clk, period):
  51         if clk is None: return
  52         if hasattr(clk, "p"):
  53             clk = clk.p
  54         self.toolchain.add_period_constraint(self, clk, period)
  55
  56     def add_false_path_constraint(self, from_, to):
  57         if hasattr(from_, "p"):
  58             from_ = from_.p
  59         if hasattr(to, "p"):
  60             to = to.p
  61         self.toolchain.add_false_path_constraint(self, from_, to)