axi_lite_to_axi.sv

// Copyright (c) 2018 ETH Zurich, University of Bologna
// All rights reserved.
//
// This code is under development and not yet released to the public.
// Until it is released, the code is under the copyright of ETH Zurich and
// the University of Bologna, and may contain confidential and/or unpublished
// work. Any reuse/redistribution is strictly forbidden without written
// permission from ETH Zurich.
//
// Bug fixes and contributions will eventually be released under the
// SolderPad open hardware license in the context of the PULP platform
// (http://www.pulp-platform.org), under the copyright of ETH Zurich and the
// University of Bologna.
//
// Fabian Schuiki <fschuiki@iis.ee.ethz.ch>

/// An AXI4-Lite to AXI4 adapter.
module axi_lite_to_axi (
  AXI_LITE.in in,
  AXI_BUS.out out
);

  `ifndef SYNTHESIS
  initial begin
    assert(in.AXI_ADDR_WIDTH == out.AXI_ADDR_WIDTH);
    assert(in.AXI_DATA_WIDTH == out.AXI_DATA_WIDTH);
  end
  `endif

  assign out.aw_id     = '0;
  assign out.aw_addr   = in.aw_addr;
  assign out.aw_len    = '0;
  assign out.aw_size   = $unsigned($clog2($bits(out.w_data)/8));
  assign out.aw_burst  = axi_pkg::BURST_FIXED;
  assign out.aw_lock   = '0;
  assign out.aw_cache  = '0; // non-modifiable and non-bufferable mandated by std
  assign out.aw_prot   = '0;
  assign out.aw_qos    = '0;
  assign out.aw_region = '0;
  assign out.aw_user   = '0;
  assign out.aw_valid  = in.aw_valid;
  assign in.aw_ready   = out.aw_ready;

  assign out.w_data    = in.w_data;
  assign out.w_strb    = in.w_strb;
  assign out.w_last    = '1;
  assign out.w_user    = '0;
  assign out.w_valid   = in.w_valid;
  assign in.w_ready    = out.w_ready;

  assign in.b_resp     = out.b_resp;
  assign in.b_valid    = out.b_valid;
  assign out.b_ready   = in.b_ready;

  assign out.ar_id     = '0;
  assign out.ar_addr   = in.ar_addr;
  assign out.ar_len    = '0;
  assign out.ar_size   = $unsigned($clog2($bits(out.r_data)/8));
  assign out.ar_burst  = axi_pkg::BURST_FIXED;
  assign out.ar_lock   = '0;
  assign out.ar_cache  = '0; // non-modifiable and non-bufferable mandated by std
  assign out.ar_prot   = '0;
  assign out.ar_qos    = '0;
  assign out.ar_region = '0;
  assign out.ar_user   = '0;
  assign out.ar_valid  = in.ar_valid;
  assign in.ar_ready   = out.ar_ready;

  assign in.r_data     = out.r_data;
  assign in.r_resp     = out.r_resp;
  assign in.r_valid    = out.r_valid;
  assign out.r_ready   = in.r_ready;

endmodule