Adding Cyclone IV (E, GX), Arria 10, Cyclone V and LPM functions (ALTPLL and M9K); M9K is not finished yet. Achronix Speedster also in this commit. Both Arria10 and Speedster-i are still experimental due complexity, but you can experiment around those devices right now

techlibs/intel/a10gx/cells_sim.v

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+/*
+ *  yosys -- Yosys Open SYnthesis Suite
+ *
+ *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+module VCC (output V);
+   assign V = 1'b1;
+endmodule // VCC
+
+module GND (output G);
+   assign G = 1'b0;
+endmodule // GND
+
+/* Altera Arria 10 GX devices Input Buffer Primitive */
+module twentynm_io_ibuf (output o, input i, input ibar);
+   assign ibar = ibar;
+   assign o    = i;
+endmodule // twentynm_io_ibuf
+
+/* Altera Arria 10 GX  devices Output Buffer Primitive */
+module twentynm_io_obuf (output o, input i, input oe);
+   assign o  = i;
+   assign oe = oe;
+endmodule // twentynm_io_obuf
+
+/* Altera Arria 10 GX  LUT Primitive */
+module twentynm_lcell_comb (output combout, cout, sumout,
+                            input  dataa, datab, datac, datad, 
+                            input  datae, dataf, datag, cin,
+                            input  sharein);
+
+parameter lut_mask      = 64'hFFFFFFFFFFFFFFFF;
+parameter dont_touch    = "off";
+parameter lpm_type      = "twentynm_lcell_comb";
+parameter shared_arith  = "off";
+parameter extended_lut  = "off";
+
+// TODO: This is still WIP
+initial begin
+  $display("Simulation model is still under investigation\n");
+end
+
+endmodule // twentynm_lcell_comb
+
+
+