small_jtag_test/vbe2vst.py

   1 #!/usr/bin/env python3
   2 """converts NIOLIB and NSXLIB from VBE into VHDL
   3 """
   4
   5 import os
   6 import sys
   7
   8 # use the chroot to set up
   9 # https://git.libre-soc.org/?p=dev-env-setup.git;a=blob;f=coriolis2-chroot;hb=HEAD
  10 # reason for using the chroot: it's standardised across the ls180 project
  11
  12 VASY_CMD = "schroot -c coriolis -d /tmp -- ~/alliance/install/bin/vasy"
  13 ALLIANCEBASE = "../alliance-check-toolkit/cells"
  14 ALLIANCE_LIBS = ['nsxlib', 'niolib']
  15
  16 yosys_ghdl_template = "ghdl --std=08 -g %s\n"
  17 yosys_ghdl_footer = """proc
  18 write_verilog %s.v
  19 write_ilang %s.il
  20 """
  21
  22 for libname in ALLIANCE_LIBS:
  23
  24     NSXLIB = "%s/%s" % (ALLIANCEBASE, libname)
  25
  26     os.system("mkdir -p %s" % libname)
  27
  28     # yosys ghdl loader script
  29     ghdl_txt = "plugin -i ghdl\n"
  30
  31     for fname in os.listdir(NSXLIB):
  32         if not fname.endswith(".vbe"):
  33             continue
  34         print (fname)
  35         prefix = fname[:-4] # strip ".vbe"
  36         os.system("cp %s/%s /tmp" % (NSXLIB, fname))
  37         os.system("rm -f /tmp/%s.vhd" % (prefix))
  38         os.system("%s -s -I vbe %s %s" % (VASY_CMD, fname, prefix))
  39         os.system("cp /tmp/%s.vhd %s" % (prefix, libname))
  40         # add loader template for this module
  41         if fname == 'sff1r_x4.vbe':
  42             # don't ask.
  43             #ghdl_txt += 'read_verilog freepdk_45/sff1r_x4.v\n'
  44             os.system("cp freepdk_45/%s.vhd %s" % (prefix, libname))
  45         ghdl_txt += yosys_ghdl_template % prefix
  46
  47     ghdl_txt += yosys_ghdl_footer % (libname, libname)
  48
  49     # write out the ghdl script
  50     fname = "%s/ghdl.ys" % libname
  51     print ("text to %s\n" % fname, ghdl_txt)
  52     with open(fname, "w") as f:
  53         f.write(ghdl_txt)