src/bsv/peripheral_gen/jtag.py

   1 from bsv.peripheral_gen.base import PBase
   2
   3
   4 class jtag(PBase):
   5
   6     def slowimport(self):
   7         return "import jtagdtm::*;\n"
   8
   9     def extfastifinstance(self, name, count):
  10         return self._extifinstance(name, count, "_out", "", True)
  11
  12     def fastifdecl(self, name, count):
  13         # YUK!
  14         return "interface Ifc_jtagdtm jtag{0}_out;".format(count)
  15
  16     def get_clk_spc(self, typ):
  17         return "tck, trst"
  18
  19     def get_clock_reset(self, name, count):
  20         return "slow_clock,  slow_reset"
  21
  22     def pinname_in(self, pname):
  23         return {'tms': 'tms',
  24                 'tdi': 'tdi',
  25                 }.get(pname, '')
  26
  27     def pinname_out(self, pname):
  28         return {'tck': 'tck',
  29                 'tdo': 'tdo',
  30                 }.get(pname, '')
  31
  32     def mkfast_peripheral(self):
  33         return """\
  34 Ifc_jtagdtm jtag{0} <-mkjtagdtm(clocked_by tck, reset_by trst);
  35 rule drive_tmp_scan_outs;
  36     jtag{0}.scan_out_1_i(1'b0);
  37     jtag{0}.scan_out_2_i(1'b0);
  38     jtag{0}.scan_out_3_i(1'b0);
  39     jtag{0}.scan_out_4_i(1'b0);
  40     jtag{0}.scan_out_5_i(1'b0);
  41 endrule
  42 """
  43
  44     def axi_slave_name(self, name, ifacenum, typ=None):
  45         return ''
  46
  47     def axi_slave_idx(self, idx, name, ifacenum, typ):
  48         return ('', 0)
  49
  50     def axi_addr_map(self, name, ifacenum, typ=None):
  51         return ''