// Copyright 2020-2022 F4PGA Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// SPDX-License-Identifier: Apache-2.0

`timescale 1ns / 10ps
module ahb_gen_bfm (

    // AHB Slave Interface to AHB Bus Matrix
    //
    A2F_HCLK,
    A2F_HRESET,

    A2F_HADDRS,
    A2F_HSEL,
    A2F_HTRANSS,
    A2F_HSIZES,
    A2F_HWRITES,
    A2F_HREADYS,
    A2F_HWDATAS,

    A2F_HREADYOUTS,
    A2F_HRESPS,
    A2F_HRDATAS

);

  //------Port Parameters----------------
  //

  parameter ADDRWIDTH = 32;
  parameter DATAWIDTH = 32;

  //
  // Define the default address between transfers
  //
  parameter DEFAULT_AHB_ADDRESS = {(ADDRWIDTH) {1'b1}};

  //
  // Define the standard delay from clock
  //
  parameter STD_CLK_DLY = 2;

  //
  // Define Debug Message Controls
  //
  parameter ENABLE_AHB_REG_WR_DEBUG_MSG = 1'b1;
  parameter ENABLE_AHB_REG_RD_DEBUG_MSG = 1'b1;

  //
  // Define the size of the message arrays
  //
  parameter TEST_MSG_ARRAY_SIZE = (64 * 8);


  //------Port Signals-------------------
  //

  // AHB connection to master
  //
  input A2F_HCLK;
  input A2F_HRESET;

  output [ADDRWIDTH-1:0] A2F_HADDRS;
  output A2F_HSEL;
  output [1:0] A2F_HTRANSS;
  output [2:0] A2F_HSIZES;
  output A2F_HWRITES;
  output A2F_HREADYS;
  output [DATAWIDTH-1:0] A2F_HWDATAS;

  input A2F_HREADYOUTS;
  input A2F_HRESPS;
  input [DATAWIDTH-1:0] A2F_HRDATAS;


  wire                           A2F_HCLK;
  wire                           A2F_HRESET;

  reg  [          ADDRWIDTH-1:0] A2F_HADDRS;
  reg                            A2F_HSEL;
  reg  [                    1:0] A2F_HTRANSS;
  reg  [                    2:0] A2F_HSIZES;
  reg                            A2F_HWRITES;
  reg                            A2F_HREADYS;
  reg  [          DATAWIDTH-1:0] A2F_HWDATAS;

  wire                           A2F_HREADYOUTS;
  wire                           A2F_HRESPS;
  wire [          DATAWIDTH-1:0] A2F_HRDATAS;


  //------Define Parameters--------------
  //

  //
  // None at this time
  //

  //------Internal Signals---------------
  //

  //	Define internal signals
  //
  reg  [TEST_MSG_ARRAY_SIZE-1:0] ahb_bfm_msg1;  // Bus used for depositing test messages in ASCI
  reg  [TEST_MSG_ARRAY_SIZE-1:0] ahb_bfm_msg2;  // Bus used for depositing test messages in ASCI
  reg  [TEST_MSG_ARRAY_SIZE-1:0] ahb_bfm_msg3;  // Bus used for depositing test messages in ASCI
  reg  [TEST_MSG_ARRAY_SIZE-1:0] ahb_bfm_msg4;  // Bus used for depositing test messages in ASCI
  reg  [TEST_MSG_ARRAY_SIZE-1:0] ahb_bfm_msg5;  // Bus used for depositing test messages in ASCI
  reg  [TEST_MSG_ARRAY_SIZE-1:0] ahb_bfm_msg6;  // Bus used for depositing test messages in ASCI


  //------Logic Operations---------------
  //

  // Define the intial state of key signals
  //
  initial begin

    A2F_HADDRS   <= DEFAULT_AHB_ADDRESS;  // Default Address
    A2F_HSEL     <= 1'b0;  // Bridge not selected
    A2F_HTRANSS  <= 2'h0;  // "IDLE" State
    A2F_HSIZES   <= 3'h0;  // "Byte" Transfer Size
    A2F_HWRITES  <= 1'b0;  // "Read" operation
    A2F_HREADYS  <= 1'b0;  // Slave is not ready
    A2F_HWDATAS  <= {(DATAWIDTH) {1'b0}};  // Write Data Value of "0"

    ahb_bfm_msg1 <= "NO ACTIVITY";  // Bus used for depositing test messages in ASCI
    ahb_bfm_msg2 <= "NO ACTIVITY";  // Bus used for depositing test messages in ASCI
    ahb_bfm_msg3 <= "NO ACTIVITY";  // Bus used for depositing test messages in ASCI
    ahb_bfm_msg4 <= "NO ACTIVITY";  // Bus used for depositing test messages in ASCI
    ahb_bfm_msg5 <= "NO ACTIVITY";  // Bus used for depositiog test messages in ASCI
    ahb_bfm_msg6 <= "NO ACTIVITY";  // Bus used for depositiog test messages in ASCI
  end


  //------Instantiate Modules------------
  //

  //
  // None at this time
  //


  //------BFM Routines-------------------
  //
`ifndef YOSYS
  task ahb_read_al4s3b_fabric;
    input [ADDRWIDTH-1:0] TARGET_ADDRESS;  //        Address to be written on the SPI bus
    input [2:0] TARGET_XFR_SIZE;  //        Transfer Size for AHB bus
    output [DATAWIDTH-1:0] TARGET_DATA;  //        Data    to be written on the SPI bus

    reg [DATAWIDTH-1:0] read_data;

    integer i, j, k;

    begin
      // Read Command Bit
      //
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      // Issue Diagnostic Messages
      //
      ahb_bfm_msg1 = "AHB Single Read";
      ahb_bfm_msg2 = "Address Phase";
      ahb_bfm_msg3 = "SEQ";

      A2F_HADDRS   = TARGET_ADDRESS;  // Transfer Address

      // Define the Transfer Request
      //
      // Transfer decode of: A2F_HTRANS[1]  A2F_HTRANS[0]  Description
      //                     -------------  -------------  ------------------------------------
      //                          0             0            IDLE               (No Transfer)
      //                          0             1            BUSY               (No Transfer)
      //                          1             0            NONSEQ             (Do Transfer)
      //                          1             1            SEQ                (Do Transfer)
      //
      // Transfer decode of: A2F_HREADYS                   Description
      //                     -----------                   ------------------------------------
      //                          0                          Slave is not ready (No Transfer)
      //                          1                          Slave is     ready (Do Transfer)
      //
      A2F_HSEL     = 1'b1;  // Bridge   selected
      A2F_HREADYS  = 1'b1;  // Slave is ready
      A2F_HTRANSS  = 2'h2;  // "NONSEQ" State

      //
      // Define "Transfer Size Encoding" is based on the following:
      //
      //       HSIZE[2]  HSIZE[1]  HSIZE[0]  Bits  Description
      //       --------  --------  --------  ----  -----------
      //          0         0         0         8  Byte
      //          0         0         1        16  Halfword
      //          0         1         0        32  Word
      //          0         1         1        64  Doublword
      //          1         0         0       128  4-word line
      //          1         0         1       256  8-word line
      //          1         1         0       512  -
      //          1         1         1      1024  -
      //
      //       The fabric design only supports up to 32 bits at a time.
      //
      A2F_HSIZES   = TARGET_XFR_SIZE;  // Transfer Size

      A2F_HWRITES  = 1'b0;  // "Read"  operation
      A2F_HWDATAS  = {(DATAWIDTH) {1'b0}};  // Write Data Value of "0"

      //
      // Wait for next clock to sampe the slave's response
      //
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      ahb_bfm_msg2 = "Data Phase";
      ahb_bfm_msg3 = "IDLE";
      ahb_bfm_msg4 = "Waiting for Slave";

      // Set the next transfer cycle to "IDLE"
      A2F_HADDRS   = DEFAULT_AHB_ADDRESS;  // Default Address
      A2F_HSEL     = 1'b0;  // Bridge not selected
      A2F_HTRANSS  = 2'h0;  // "IDLE" State
      A2F_HSIZES   = 3'h0;  // "Byte" Transfer Size

      //
      // Check if the slave has returend data
      //
      while (A2F_HREADYOUTS == 1'b0) begin
        @(posedge A2F_HCLK) #STD_CLK_DLY;
      end

      A2F_HREADYS = 1'b0;  // Slave is not ready
      TARGET_DATA = A2F_HRDATAS;  // Read slave data value

      // Clear Diagnostic Messages
      //
      ahb_bfm_msg1 <= "NO ACTIVITY";
      ahb_bfm_msg2 <= "NO ACTIVITY";
      ahb_bfm_msg3 <= "NO ACTIVITY";
      ahb_bfm_msg4 <= "NO ACTIVITY";
      ahb_bfm_msg5 <= "NO ACTIVITY";
      ahb_bfm_msg6 <= "NO ACTIVITY";

    end
  endtask


  task ahb_write_al4s3b_fabric;
    input [ADDRWIDTH-1:0] TARGET_ADDRESS;  //        Address to be written on the SPI bus
    input [2:0] TARGET_XFR_SIZE;  //        Transfer Size for AHB bus
    input [DATAWIDTH-1:0] TARGET_DATA;  //        Data    to be written on the SPI bus

    reg [DATAWIDTH-1:0] read_data;

    integer i, j, k;

    begin
      // Read Command Bit
      //
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      // Issue Diagnostic Messages
      //
      ahb_bfm_msg1 = "AHB Single Write";
      ahb_bfm_msg2 = "Address Phase";
      ahb_bfm_msg3 = "SEQ";

      A2F_HADDRS   = TARGET_ADDRESS;  // Transfer Address

      // Define the Transfer Request
      //
      // Transfer decode of: A2F_HTRANS[1]  A2F_HTRANS[0]  Description
      //                     -------------  -------------  ------------------------------------
      //                          0             0            IDLE               (No Transfer)
      //                          0             1            BUSY               (No Transfer)
      //                          1             0            NONSEQ             (Do Transfer)
      //                          1             1            SEQ                (Do Transfer)
      //
      // Transfer decode of: A2F_HREADYS                   Description
      //                     -----------                   ------------------------------------
      //                          0                          Slave is not ready (No Transfer)
      //                          1                          Slave is     ready (Do Transfer)
      //
      A2F_HSEL     = 1'b1;  // Bridge   selected
      A2F_HREADYS  = 1'b1;  // Slave is ready
      A2F_HTRANSS  = 2'h2;  // "NONSEQ" State

      //
      // Define "Transfer Size Encoding" is based on the following:
      //
      //       HSIZE[2]  HSIZE[1]  HSIZE[0]  Bits  Description
      //       --------  --------  --------  ----  -----------
      //          0         0         0         8  Byte
      //          0         0         1        16  Halfword
      //          0         1         0        32  Word
      //          0         1         1        64  Doublword
      //          1         0         0       128  4-word line
      //          1         0         1       256  8-word line
      //          1         1         0       512  -
      //          1         1         1      1024  -
      //
      //       The fabric design only supports up to 32 bits at a time.
      //
      A2F_HSIZES   = TARGET_XFR_SIZE;  // Transfer Size

      A2F_HWRITES  = 1'b1;  // "Write"  operation
      A2F_HWDATAS  = {(DATAWIDTH) {1'b0}};  // Write Data Value of "0"

      //
      // Wait for next clock to sampe the slave's response
      //
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      ahb_bfm_msg2 = "Data Phase";
      ahb_bfm_msg3 = "IDLE";
      ahb_bfm_msg4 = "Waiting for Slave";

      // Set the next transfer cycle to "IDLE"
      A2F_HADDRS   = DEFAULT_AHB_ADDRESS;  // Default Address
      A2F_HSEL     = 1'b0;  // Bridge not selected
      A2F_HTRANSS  = 2'h0;  // "IDLE" State
      A2F_HSIZES   = 3'h0;  // "Byte" Transfer Size
      A2F_HWDATAS  = TARGET_DATA;  // Write From test routine
      A2F_HWRITES  = 1'b0;  // "Read"  operation

      //
      // Check if the slave has returend data
      //
      while (A2F_HREADYOUTS == 1'b0) begin
        @(posedge A2F_HCLK) #STD_CLK_DLY;
      end

      A2F_HREADYS = 1'b0;  // Slave is not ready
      TARGET_DATA = A2F_HRDATAS;  // Read slave data value

      // Clear Diagnostic Messages
      //
      ahb_bfm_msg1 <= "NO ACTIVITY";
      ahb_bfm_msg2 <= "NO ACTIVITY";
      ahb_bfm_msg3 <= "NO ACTIVITY";
      ahb_bfm_msg4 <= "NO ACTIVITY";
      ahb_bfm_msg5 <= "NO ACTIVITY";
      ahb_bfm_msg6 <= "NO ACTIVITY";

    end
  endtask

  task ahb_read_word_al4s3b_fabric;
    input [ADDRWIDTH-1:0] TARGET_ADDRESS;  //        Address to be written on the SPI bus
    output [DATAWIDTH-1:0] TARGET_DATA;  //        Data    to be written on the SPI bus

    reg [DATAWIDTH-1:0] read_data;

    integer i, j, k;

    begin
      // Read Command Bit
      //

      wait(A2F_HRESET == 0);
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      // Issue Diagnostic Messages
      //
      ahb_bfm_msg1 = "AHB Single Read";
      ahb_bfm_msg2 = "Address Phase";
      ahb_bfm_msg3 = "SEQ";

      A2F_HADDRS   = TARGET_ADDRESS;  // Transfer Address

      // Define the Transfer Request
      //
      // Transfer decode of: A2F_HTRANS[1]  A2F_HTRANS[0]  Description
      //                     -------------  -------------  ------------------------------------
      //                          0             0            IDLE               (No Transfer)
      //                          0             1            BUSY               (No Transfer)
      //                          1             0            NONSEQ             (Do Transfer)
      //                          1             1            SEQ                (Do Transfer)
      //
      // Transfer decode of: A2F_HREADYS                   Description
      //                     -----------                   ------------------------------------
      //                          0                          Slave is not ready (No Transfer)
      //                          1                          Slave is     ready (Do Transfer)
      //
      A2F_HSEL     = 1'b1;  // Bridge   selected
      A2F_HREADYS  = 1'b1;  // Slave is ready
      A2F_HTRANSS  = 2'h2;  // "NONSEQ" State

      //
      // Define "Transfer Size Encoding" is based on the following:
      //
      //       HSIZE[2]  HSIZE[1]  HSIZE[0]  Bits  Description
      //       --------  --------  --------  ----  -----------
      //          0         0         0         8  Byte
      //          0         0         1        16  Halfword
      //          0         1         0        32  Word
      //          0         1         1        64  Doublword
      //          1         0         0       128  4-word line
      //          1         0         1       256  8-word line
      //          1         1         0       512  -
      //          1         1         1      1024  -
      //
      //       The fabric design only supports up to 32 bits at a time.
      //
      A2F_HSIZES   = 3'b010;  // Transfer Size

      A2F_HWRITES  = 1'b0;  // "Read"  operation
      A2F_HWDATAS  = {(DATAWIDTH) {1'b0}};  // Write Data Value of "0"

      //
      // Wait for next clock to sampe the slave's response
      //
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      ahb_bfm_msg2 = "Data Phase";
      ahb_bfm_msg3 = "IDLE";
      ahb_bfm_msg4 = "Waiting for Slave";

      // Set the next transfer cycle to "IDLE"
      A2F_HADDRS   = DEFAULT_AHB_ADDRESS;  // Default Address
      A2F_HSEL     = 1'b0;  // Bridge not selected
      A2F_HTRANSS  = 2'h0;  // "IDLE" State
      A2F_HSIZES   = 3'h0;  // "Byte" Transfer Size

      //
      // Check if the slave has returend data
      //
      while (A2F_HREADYOUTS == 1'b0) begin
        @(posedge A2F_HCLK) #STD_CLK_DLY;
      end

      A2F_HREADYS = 1'b0;  // Slave is not ready
      TARGET_DATA = A2F_HRDATAS;  // Read slave data value

      // Clear Diagnostic Messages
      //
      ahb_bfm_msg1 <= "NO ACTIVITY";
      ahb_bfm_msg2 <= "NO ACTIVITY";
      ahb_bfm_msg3 <= "NO ACTIVITY";
      ahb_bfm_msg4 <= "NO ACTIVITY";
      ahb_bfm_msg5 <= "NO ACTIVITY";
      ahb_bfm_msg6 <= "NO ACTIVITY";

    end
  endtask


  task ahb_write_word_al4s3b_fabric;
    input [ADDRWIDTH-1:0] TARGET_ADDRESS;  //        Address to be written on the SPI bus
    input [DATAWIDTH-1:0] TARGET_DATA;  //        Data    to be written on the SPI bus

    reg [DATAWIDTH-1:0] read_data;

    integer i, j, k;

    begin
      // Read Command Bit
      //
      wait(A2F_HRESET == 0);

      @(posedge A2F_HCLK) #STD_CLK_DLY;

      // Issue Diagnostic Messages
      //
      ahb_bfm_msg1 = "AHB Single Write";
      ahb_bfm_msg2 = "Address Phase";
      ahb_bfm_msg3 = "SEQ";

      A2F_HADDRS   = TARGET_ADDRESS;  // Transfer Address

      // Define the Transfer Request
      //
      // Transfer decode of: A2F_HTRANS[1]  A2F_HTRANS[0]  Description
      //                     -------------  -------------  ------------------------------------
      //                          0             0            IDLE               (No Transfer)
      //                          0             1            BUSY               (No Transfer)
      //                          1             0            NONSEQ             (Do Transfer)
      //                          1             1            SEQ                (Do Transfer)
      //
      // Transfer decode of: A2F_HREADYS                   Description
      //                     -----------                   ------------------------------------
      //                          0                          Slave is not ready (No Transfer)
      //                          1                          Slave is     ready (Do Transfer)
      //
      A2F_HSEL     = 1'b1;  // Bridge   selected
      A2F_HREADYS  = 1'b1;  // Slave is ready
      A2F_HTRANSS  = 2'h2;  // "NONSEQ" State

      //
      // Define "Transfer Size Encoding" is based on the following:
      //
      //       HSIZE[2]  HSIZE[1]  HSIZE[0]  Bits  Description
      //       --------  --------  --------  ----  -----------
      //          0         0         0         8  Byte
      //          0         0         1        16  Halfword
      //          0         1         0        32  Word
      //          0         1         1        64  Doublword
      //          1         0         0       128  4-word line
      //          1         0         1       256  8-word line
      //          1         1         0       512  -
      //          1         1         1      1024  -
      //
      //       The fabric design only supports up to 32 bits at a time.
      //
      A2F_HSIZES   = 3'b010;  // Transfer Size

      A2F_HWRITES  = 1'b1;  // "Write"  operation
      A2F_HWDATAS  = {(DATAWIDTH) {1'b0}};  // Write Data Value of "0"

      //
      // Wait for next clock to sampe the slave's response
      //
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      ahb_bfm_msg2 = "Data Phase";
      ahb_bfm_msg3 = "IDLE";
      ahb_bfm_msg4 = "Waiting for Slave";

      // Set the next transfer cycle to "IDLE"
      A2F_HADDRS   = DEFAULT_AHB_ADDRESS;  // Default Address
      A2F_HSEL     = 1'b0;  // Bridge not selected
      A2F_HTRANSS  = 2'h0;  // "IDLE" State
      A2F_HSIZES   = 3'h0;  // "Byte" Transfer Size
      A2F_HWDATAS  = TARGET_DATA;  // Write From test routine
      A2F_HWRITES  = 1'b0;  // "Read"  operation

      //
      // Check if the slave has returend data
      //
      while (A2F_HREADYOUTS == 1'b0) begin
        @(posedge A2F_HCLK) #STD_CLK_DLY;
      end

      A2F_HREADYS = 1'b0;  // Slave is not ready
      TARGET_DATA = A2F_HRDATAS;  // Read slave data value

      // Clear Diagnostic Messages
      //
      ahb_bfm_msg1 <= "NO ACTIVITY";
      ahb_bfm_msg2 <= "NO ACTIVITY";
      ahb_bfm_msg3 <= "NO ACTIVITY";
      ahb_bfm_msg4 <= "NO ACTIVITY";
      ahb_bfm_msg5 <= "NO ACTIVITY";
      ahb_bfm_msg6 <= "NO ACTIVITY";

      //$stop();

    end
  endtask

  task ahb_write_al4s3b_fabric_mod;
    input [ADDRWIDTH-1:0] TARGET_ADDRESS;  //        Address to be written on the SPI bus
    input [2:0] TARGET_XFR_SIZE;  //        Transfer Size for AHB bus
    input [DATAWIDTH-1:0] TARGET_DATA;  //        Data    to be written on the SPI bus

    reg [DATAWIDTH-1:0] read_data;

    integer i, j, k;

    begin
      // Read Command Bit
      //
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      // Issue Diagnostic Messages
      //
      ahb_bfm_msg1 = "AHB Single Write";
      ahb_bfm_msg2 = "Address Phase";
      ahb_bfm_msg3 = "SEQ";

      //A2F_HADDRS    =  TARGET_ADDRESS;       // Transfer Address
      A2F_HADDRS = {
        TARGET_ADDRESS[ADDRWIDTH-1:11], (TARGET_ADDRESS[10:0] << 2)
      };  // Transfer Address

      // Define the Transfer Request
      //
      // Transfer decode of: A2F_HTRANS[1]  A2F_HTRANS[0]  Description
      //                     -------------  -------------  ------------------------------------
      //                          0             0            IDLE               (No Transfer)
      //                          0             1            BUSY               (No Transfer)
      //                          1             0            NONSEQ             (Do Transfer)
      //                          1             1            SEQ                (Do Transfer)
      //
      // Transfer decode of: A2F_HREADYS                   Description
      //                     -----------                   ------------------------------------
      //                          0                          Slave is not ready (No Transfer)
      //                          1                          Slave is     ready (Do Transfer)
      //
      A2F_HSEL = 1'b1;  // Bridge   selected
      A2F_HREADYS = 1'b1;  // Slave is ready
      A2F_HTRANSS = 2'h2;  // "NONSEQ" State

      //
      // Define "Transfer Size Encoding" is based on the following:
      //
      //       HSIZE[2]  HSIZE[1]  HSIZE[0]  Bits  Description
      //       --------  --------  --------  ----  -----------
      //          0         0         0         8  Byte
      //          0         0         1        16  Halfword
      //          0         1         0        32  Word
      //          0         1         1        64  Doublword
      //          1         0         0       128  4-word line
      //          1         0         1       256  8-word line
      //          1         1         0       512  -
      //          1         1         1      1024  -
      //
      //       The fabric design only supports up to 32 bits at a time.
      //
      A2F_HSIZES = TARGET_XFR_SIZE;  // Transfer Size

      A2F_HWRITES = 1'b1;  // "Write"  operation
      A2F_HWDATAS = {(DATAWIDTH) {1'b0}};  // Write Data Value of "0"

      //
      // Wait for next clock to sampe the slave's response
      //
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      ahb_bfm_msg2 = "Data Phase";
      ahb_bfm_msg3 = "IDLE";
      ahb_bfm_msg4 = "Waiting for Slave";

      // Set the next transfer cycle to "IDLE"
      A2F_HADDRS   = DEFAULT_AHB_ADDRESS;  // Default Address
      A2F_HSEL     = 1'b0;  // Bridge not selected
      A2F_HTRANSS  = 2'h0;  // "IDLE" State
      A2F_HSIZES   = 3'h0;  // "Byte" Transfer Size
      A2F_HWDATAS  = TARGET_DATA;  // Write From test routine
      A2F_HWRITES  = 1'b0;  // "Read"  operation

      //
      // Check if the slave has returend data
      //
      while (A2F_HREADYOUTS == 1'b0) begin
        @(posedge A2F_HCLK) #STD_CLK_DLY;
      end

      A2F_HREADYS = 1'b0;  // Slave is not ready
      TARGET_DATA = A2F_HRDATAS;  // Read slave data value

      // Clear Diagnostic Messages
      //
      ahb_bfm_msg1 <= "NO ACTIVITY";
      ahb_bfm_msg2 <= "NO ACTIVITY";
      ahb_bfm_msg3 <= "NO ACTIVITY";
      ahb_bfm_msg4 <= "NO ACTIVITY";
      ahb_bfm_msg5 <= "NO ACTIVITY";
      ahb_bfm_msg6 <= "NO ACTIVITY";

    end
  endtask


  task ahb_read_al4s3b_fabric_mod;
    input [ADDRWIDTH-1:0] TARGET_ADDRESS;  //        Address to be written on the SPI bus
    input [2:0] TARGET_XFR_SIZE;  //        Transfer Size for AHB bus
    output [DATAWIDTH-1:0] TARGET_DATA;  //        Data    to be written on the SPI bus

    reg [DATAWIDTH-1:0] read_data;

    integer i, j, k;

    begin
      // Read Command Bit
      //
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      // Issue Diagnostic Messages
      //
      ahb_bfm_msg1 = "AHB Single Read";
      ahb_bfm_msg2 = "Address Phase";
      ahb_bfm_msg3 = "SEQ";

      //A2F_HADDRS    =  TARGET_ADDRESS;       // Transfer Address
      A2F_HADDRS = {
        TARGET_ADDRESS[ADDRWIDTH-1:11], (TARGET_ADDRESS[10:0] << 2)
      };  // Transfer Address

      // Define the Transfer Request
      //
      // Transfer decode of: A2F_HTRANS[1]  A2F_HTRANS[0]  Description
      //                     -------------  -------------  ------------------------------------
      //                          0             0            IDLE               (No Transfer)
      //                          0             1            BUSY               (No Transfer)
      //                          1             0            NONSEQ             (Do Transfer)
      //                          1             1            SEQ                (Do Transfer)
      //
      // Transfer decode of: A2F_HREADYS                   Description
      //                     -----------                   ------------------------------------
      //                          0                          Slave is not ready (No Transfer)
      //                          1                          Slave is     ready (Do Transfer)
      //
      A2F_HSEL = 1'b1;  // Bridge   selected
      A2F_HREADYS = 1'b1;  // Slave is ready
      A2F_HTRANSS = 2'h2;  // "NONSEQ" State

      //
      // Define "Transfer Size Encoding" is based on the following:
      //
      //       HSIZE[2]  HSIZE[1]  HSIZE[0]  Bits  Description
      //       --------  --------  --------  ----  -----------
      //          0         0         0         8  Byte
      //          0         0         1        16  Halfword
      //          0         1         0        32  Word
      //          0         1         1        64  Doublword
      //          1         0         0       128  4-word line
      //          1         0         1       256  8-word line
      //          1         1         0       512  -
      //          1         1         1      1024  -
      //
      //       The fabric design only supports up to 32 bits at a time.
      //
      A2F_HSIZES = TARGET_XFR_SIZE;  // Transfer Size

      A2F_HWRITES = 1'b0;  // "Read"  operation
      A2F_HWDATAS = {(DATAWIDTH) {1'b0}};  // Write Data Value of "0"

      //
      // Wait for next clock to sampe the slave's response
      //
      @(posedge A2F_HCLK) #STD_CLK_DLY;

      ahb_bfm_msg2 = "Data Phase";
      ahb_bfm_msg3 = "IDLE";
      ahb_bfm_msg4 = "Waiting for Slave";

      // Set the next transfer cycle to "IDLE"
      A2F_HADDRS   = DEFAULT_AHB_ADDRESS;  // Default Address
      A2F_HSEL     = 1'b0;  // Bridge not selected
      A2F_HTRANSS  = 2'h0;  // "IDLE" State
      A2F_HSIZES   = 3'h0;  // "Byte" Transfer Size

      //
      // Check if the slave has returend data
      //
      while (A2F_HREADYOUTS == 1'b0) begin
        @(posedge A2F_HCLK) #STD_CLK_DLY;
      end

      A2F_HREADYS = 1'b0;  // Slave is not ready
      TARGET_DATA = A2F_HRDATAS;  // Read slave data value

      // Clear Diagnostic Messages
      //
      ahb_bfm_msg1 <= "NO ACTIVITY";
      ahb_bfm_msg2 <= "NO ACTIVITY";
      ahb_bfm_msg3 <= "NO ACTIVITY";
      ahb_bfm_msg4 <= "NO ACTIVITY";
      ahb_bfm_msg5 <= "NO ACTIVITY";
      ahb_bfm_msg6 <= "NO ACTIVITY";

    end
  endtask
`endif

endmodule

`timescale 1ns / 10ps

module oscillator_s1 (

    OSC_CLK_EN,
    OSC_CLK

);

  //	Define the oscillator's frequency
  //
  //	Note:	The parameter above assumes that values are calculated in units of nS.
  //
  parameter T_CYCLE_CLK = (1000.0 / 19.2);

  input OSC_CLK_EN;
  output OSC_CLK;

  wire OSC_CLK_EN;
  wire OSC_CLK;

  reg  osc_int_clk;

  //	Define the output enable
  //
  assign OSC_CLK = OSC_CLK_EN ? osc_int_clk : 1'bZ;

  // Define the clock oscillator section
  //
  initial begin
    osc_int_clk = 0;  // Intialize the clock at time 0ns.
`ifndef YOSYS
    forever				// Generate a clock with an expected frequency.
	begin
      #(T_CYCLE_CLK / 2) osc_int_clk = 1;
      #(T_CYCLE_CLK / 2) osc_int_clk = 0;
    end
`endif
  end

endmodule

`timescale 1ns / 10ps

module sdma_bfm (

    // SDMA Interface Signals
    //
    sdma_req_i,
    sdma_sreq_i,
    sdma_done_o,
    sdma_active_o

);

  input [3:0] sdma_req_i;
  input [3:0] sdma_sreq_i;
  output [3:0] sdma_done_o;
  output [3:0] sdma_active_o;

  reg [3:0] sdma_done_sig;
  reg [3:0] sdma_active_sig;

  assign sdma_done_o   = sdma_done_sig;
  assign sdma_active_o = sdma_active_sig;

  initial begin
    sdma_done_sig   <= 4'h0;
    sdma_active_sig <= 4'h0;

  end

`ifndef YOSYS
  task drive_dma_active;
    input [3:0] dma_active_i;
    begin
      sdma_active_sig <= dma_active_i;
      #100;
      //sdma_active_sig <= 4'h0;

    end
  endtask
`endif
endmodule

`timescale 1ns / 10ps
module ahb2fb_asynbrig_if (

    A2F_HCLK,  // clock
    A2F_HRESET,  // reset

    // AHB connection to master
    //
    A2F_HSEL,
    A2F_HADDRS,
    A2F_HTRANSS,
    A2F_HSIZES,
    A2F_HWRITES,
    A2F_HREADYS,

    A2F_HREADYOUTS,
    A2F_HRESPS,

    // Fabric Interface
    //
    AHB_ASYNC_ADDR_O,
    AHB_ASYNC_READ_EN_O,
    AHB_ASYNC_WRITE_EN_O,
    AHB_ASYNC_BYTE_STROBE_O,

    AHB_ASYNC_STB_TOGGLE_O,

    FABRIC_ASYNC_ACK_TOGGLE_I

);


  //-----Port Parameters-----------------
  //

  parameter DATAWIDTH = 32;
  parameter APERWIDTH = 17;

  parameter STATE_WIDTH = 1;

  parameter AHB_ASYNC_IDLE = 0;
  parameter AHB_ASYNC_WAIT = 1;


  //-----Port Signals--------------------
  //


  //------------------------------------------
  // AHB connection to master
  //
  input A2F_HCLK;  // clock
  input A2F_HRESET;  // reset

  input [APERWIDTH-1:0] A2F_HADDRS;
  input A2F_HSEL;
  input [1:0] A2F_HTRANSS;
  input [2:0] A2F_HSIZES;
  input A2F_HWRITES;
  input A2F_HREADYS;

  output A2F_HREADYOUTS;
  output A2F_HRESPS;


  //------------------------------------------
  // Fabric Interface
  //
  output [APERWIDTH-1:0] AHB_ASYNC_ADDR_O;
  output AHB_ASYNC_READ_EN_O;
  output AHB_ASYNC_WRITE_EN_O;
  output [3:0] AHB_ASYNC_BYTE_STROBE_O;

  output AHB_ASYNC_STB_TOGGLE_O;

  input FABRIC_ASYNC_ACK_TOGGLE_I;


  //------------------------------------------
  // AHB connection to master
  //
  wire                   A2F_HCLK;  // clock
  wire                   A2F_HRESET;  // reset

  wire [  APERWIDTH-1:0] A2F_HADDRS;
  wire                   A2F_HSEL;
  wire [            1:0] A2F_HTRANSS;
  wire [            2:0] A2F_HSIZES;
  wire                   A2F_HWRITES;
  wire                   A2F_HREADYS;

  reg                    A2F_HREADYOUTS;
  reg                    A2F_HREADYOUTS_nxt;

  wire                   A2F_HRESPS;


  //------------------------------------------
  // Fabric Interface
  //
  reg  [  APERWIDTH-1:0] AHB_ASYNC_ADDR_O;
  reg                    AHB_ASYNC_READ_EN_O;
  reg                    AHB_ASYNC_WRITE_EN_O;

  reg  [            3:0] AHB_ASYNC_BYTE_STROBE_O;
  reg  [            3:0] AHB_ASYNC_BYTE_STROBE_O_nxt;


  reg                    AHB_ASYNC_STB_TOGGLE_O;
  reg                    AHB_ASYNC_STB_TOGGLE_O_nxt;

  wire                   FABRIC_ASYNC_ACK_TOGGLE_I;


  //------Define Parameters---------
  //

  //
  // None at this time
  //


  //-----Internal Signals--------------------
  //

  wire                   trans_req;  // transfer request 

  reg  [STATE_WIDTH-1:0] ahb_to_fabric_state;
  reg  [STATE_WIDTH-1:0] ahb_to_fabric_state_nxt;

  reg                    fabric_async_ack_toggle_i_1ff;
  reg                    fabric_async_ack_toggle_i_2ff;
  reg                    fabric_async_ack_toggle_i_3ff;

  wire                   fabric_async_ack;

  //------Logic Operations----------
  //


  // Define the Transfer Request
  //
  // Transfer decode of: A2F_HTRANS[1]  A2F_HTRANS[0]  Description
  //                     -------------  -------------  ------------------------------------
  //                          0             0            IDLE               (No Transfer)
  //                          0             1            BUSY               (No Transfer)
  //                          1             0            NONSEQ             (Do Transfer)
  //                          1             1            SEQ                (Do Transfer)
  //
  // Transfer decode of: A2F_HREADYS                   Description
  //                     -----------                   ------------------------------------
  //                          0                          Slave is not ready (No Transfer)
  //                          1                          Slave is     ready (Do Transfer)
  //
  assign trans_req        =   A2F_HSEL
	                        &   A2F_HREADYS 
						    &   A2F_HTRANSS[1]; // transfer request issued only in SEQ and NONSEQ status and slave is
  // selected and last transfer finish


  // Check for acknowldge from the fabric
  //
  // Note: The fabric is on a different and potentially asynchronous clock.
  //       Therefore, acknowledge is passed as a toggle signal.
  //
  assign fabric_async_ack = fabric_async_ack_toggle_i_2ff ^ fabric_async_ack_toggle_i_3ff;


  // Issue transfer status
  //
  // Note: All transfers are considered to have completed successfully.
  //
  assign A2F_HRESPS = 1'b0;  // OKAY response from slave


  // Address signal registering, to make the address and data active at the same cycle
  //
  always @(posedge A2F_HCLK or posedge A2F_HRESET) begin
    if (A2F_HRESET) begin
      ahb_to_fabric_state           <= AHB_ASYNC_IDLE;

      AHB_ASYNC_ADDR_O              <= {(APERWIDTH) {1'b0}};  //default address 0 is selected
      AHB_ASYNC_READ_EN_O           <= 1'b0;
      AHB_ASYNC_WRITE_EN_O          <= 1'b0;
      AHB_ASYNC_BYTE_STROBE_O       <= 4'b0;

      AHB_ASYNC_STB_TOGGLE_O        <= 1'b0;

      fabric_async_ack_toggle_i_1ff <= 1'b0;
      fabric_async_ack_toggle_i_2ff <= 1'b0;
      fabric_async_ack_toggle_i_3ff <= 1'b0;

      A2F_HREADYOUTS                <= 1'b0;
    end else begin
      ahb_to_fabric_state <= ahb_to_fabric_state_nxt;

      if (trans_req) begin
        AHB_ASYNC_ADDR_O        <= A2F_HADDRS[APERWIDTH-1:0];
        AHB_ASYNC_READ_EN_O     <= ~A2F_HWRITES;
        AHB_ASYNC_WRITE_EN_O    <= A2F_HWRITES;
        AHB_ASYNC_BYTE_STROBE_O <= AHB_ASYNC_BYTE_STROBE_O_nxt;
      end

      AHB_ASYNC_STB_TOGGLE_O        <= AHB_ASYNC_STB_TOGGLE_O_nxt;

      fabric_async_ack_toggle_i_1ff <= FABRIC_ASYNC_ACK_TOGGLE_I;
      fabric_async_ack_toggle_i_2ff <= fabric_async_ack_toggle_i_1ff;
      fabric_async_ack_toggle_i_3ff <= fabric_async_ack_toggle_i_2ff;

      A2F_HREADYOUTS                <= A2F_HREADYOUTS_nxt;
    end
  end


  // Byte Strobe Signal Decode
  //
  // Note: The "Transfer Size Encoding" is defined as follows:
  //
  //       HSIZE[2]  HSIZE[1]  HSIZE[0]  Bits  Description
  //       --------  --------  --------  ----  -----------
  //          0         0         0         8  Byte
  //          0         0         1        16  Halfword
  //          0         1         0        32  Word
  //          0         1         1        64  Doublword
  //          1         0         0       128  4-word line
  //          1         0         1       256  8-word line
  //          1         1         0       512  -
  //          1         1         1      1024  -
  //
  //       The fabric design only supports up to 32 bits at a time.
  //
  always @(A2F_HSIZES or A2F_HADDRS) begin
    case (A2F_HSIZES)
      3'b000:                                  //byte
        begin
        case (A2F_HADDRS[1:0])
          2'b00:   AHB_ASYNC_BYTE_STROBE_O_nxt <= 4'b0001;
          2'b01:   AHB_ASYNC_BYTE_STROBE_O_nxt <= 4'b0010;
          2'b10:   AHB_ASYNC_BYTE_STROBE_O_nxt <= 4'b0100;
          2'b11:   AHB_ASYNC_BYTE_STROBE_O_nxt <= 4'b1000;
          default: AHB_ASYNC_BYTE_STROBE_O_nxt <= 4'b0000;
        endcase
      end
      3'b001:                                  //half word
        begin
        case (A2F_HADDRS[1])
          1'b0:    AHB_ASYNC_BYTE_STROBE_O_nxt <= 4'b0011;
          1'b1:    AHB_ASYNC_BYTE_STROBE_O_nxt <= 4'b1100;
          default: AHB_ASYNC_BYTE_STROBE_O_nxt <= 4'b0000;
        endcase
      end
      default: AHB_ASYNC_BYTE_STROBE_O_nxt <= 4'b1111;  // default 32 bits, word
    endcase
  end


  // Define the AHB Interface Statemachine
  //
  always @(trans_req or fabric_async_ack or AHB_ASYNC_STB_TOGGLE_O or ahb_to_fabric_state) begin
    case (ahb_to_fabric_state)
      AHB_ASYNC_IDLE: begin
        case (trans_req)
          1'b0:  // Wait for an AHB Transfer
            begin
            ahb_to_fabric_state_nxt    <= AHB_ASYNC_IDLE;
            A2F_HREADYOUTS_nxt         <= 1'b1;
            AHB_ASYNC_STB_TOGGLE_O_nxt <= AHB_ASYNC_STB_TOGGLE_O;
          end
          1'b1:  // AHB Transfer Detected
            begin
            ahb_to_fabric_state_nxt    <= AHB_ASYNC_WAIT;
            A2F_HREADYOUTS_nxt         <= 1'b0;
            AHB_ASYNC_STB_TOGGLE_O_nxt <= ~AHB_ASYNC_STB_TOGGLE_O;
          end
        endcase
      end
      AHB_ASYNC_WAIT: begin
        AHB_ASYNC_STB_TOGGLE_O_nxt <= AHB_ASYNC_STB_TOGGLE_O;

        case (fabric_async_ack)
          1'b0:  // Wait for Acknowledge from Fabric Interface
            begin
            ahb_to_fabric_state_nxt <= AHB_ASYNC_WAIT;
            A2F_HREADYOUTS_nxt      <= 1'b0;
          end
          1'b1:  // Received Acknowledge from Fabric Interface
            begin
            ahb_to_fabric_state_nxt <= AHB_ASYNC_IDLE;
            A2F_HREADYOUTS_nxt      <= 1'b1;
          end
        endcase
      end
      default: begin
        ahb_to_fabric_state_nxt    <= AHB_ASYNC_IDLE;
        A2F_HREADYOUTS_nxt         <= 1'b0;
        AHB_ASYNC_STB_TOGGLE_O_nxt <= AHB_ASYNC_STB_TOGGLE_O;
      end
    endcase
  end

endmodule

`timescale 1ns / 10ps

module fb2ahb_asynbrig_if (

    A2F_HRDATAS,

    // AHB Interface
    //
    AHB_ASYNC_READ_EN_I,
    AHB_ASYNC_WRITE_EN_I,
    AHB_ASYNC_BYTE_STROBE_I,

    AHB_ASYNC_STB_TOGGLE_I,

    // Fabric Interface
    //
    WB_CLK_I,
    WB_RST_I,
    WB_ACK_I,
    WB_DAT_I,

    WB_CYC_O,
    WB_BYTE_STB_O,
    WB_WE_O,
    WB_RD_O,
    WB_STB_O,

    FABRIC_ASYNC_ACK_TOGGLE_O

);


  //-----Port Parameters-----------------
  //

  parameter DATAWIDTH = 32;

  parameter STATE_WIDTH = 1;

  parameter FAB_ASYNC_IDLE = 0;
  parameter FAB_ASYNC_WAIT = 1;


  //-----Port Signals--------------------
  //


  //------------------------------------------
  // AHB connection to master
  //
  output [DATAWIDTH-1:0] A2F_HRDATAS;


  //------------------------------------------
  // Fabric Interface
  //
  input AHB_ASYNC_READ_EN_I;
  input AHB_ASYNC_WRITE_EN_I;
  input [3:0] AHB_ASYNC_BYTE_STROBE_I;

  input AHB_ASYNC_STB_TOGGLE_I;


  input WB_CLK_I;
  input WB_RST_I;
  input WB_ACK_I;
  input [DATAWIDTH-1:0] WB_DAT_I;

  output WB_CYC_O;
  output [3:0] WB_BYTE_STB_O;
  output WB_WE_O;
  output WB_RD_O;
  output WB_STB_O;

  output FABRIC_ASYNC_ACK_TOGGLE_O;


  //------------------------------------------
  // AHB connection to master
  //

  reg  [  DATAWIDTH-1:0] A2F_HRDATAS;
  reg  [  DATAWIDTH-1:0] A2F_HRDATAS_nxt;


  //------------------------------------------
  // Fabric Interface
  //
  wire                   AHB_ASYNC_READ_EN_I;
  wire                   AHB_ASYNC_WRITE_EN_I;

  wire [            3:0] AHB_ASYNC_BYTE_STROBE_I;

  wire                   AHB_ASYNC_STB_TOGGLE_I;


  wire                   WB_CLK_I;
  wire                   WB_RST_I;
  wire                   WB_ACK_I;

  reg                    WB_CYC_O;
  reg                    WB_CYC_O_nxt;

  reg  [            3:0] WB_BYTE_STB_O;
  reg  [            3:0] WB_BYTE_STB_O_nxt;

  reg                    WB_WE_O;
  reg                    WB_WE_O_nxt;

  reg                    WB_RD_O;
  reg                    WB_RD_O_nxt;

  reg                    WB_STB_O;
  reg                    WB_STB_O_nxt;

  reg                    FABRIC_ASYNC_ACK_TOGGLE_O;
  reg                    FABRIC_ASYNC_ACK_TOGGLE_O_nxt;


  //------Define Parameters---------
  //

  //
  // None at this time
  //


  //-----Internal Signals--------------------
  //

  reg  [STATE_WIDTH-1:0] fabric_to_ahb_state;
  reg  [STATE_WIDTH-1:0] fabric_to_ahb_state_nxt;

  reg                    ahb_async_stb_toggle_i_1ff;
  reg                    ahb_async_stb_toggle_i_2ff;
  reg                    ahb_async_stb_toggle_i_3ff;

  wire                   ahb_async_stb;


  //------Logic Operations----------
  //


  // Check for transfer from the AHB
  //
  // Note: The AHB is on a different and potentially asynchronous clock.
  //       Therefore, strobe is passed as a toggle signal.
  //
  assign ahb_async_stb = ahb_async_stb_toggle_i_2ff ^ ahb_async_stb_toggle_i_3ff;


  // Address signal registering, to make the address and data active at the same cycle
  //
  always @(posedge WB_CLK_I or posedge WB_RST_I) begin
    if (WB_RST_I) begin
      fabric_to_ahb_state        <= FAB_ASYNC_IDLE;

      A2F_HRDATAS                <= {(DATAWIDTH) {1'b0}};

      WB_CYC_O                   <= 1'b0;
      WB_BYTE_STB_O              <= 4'b0;
      WB_WE_O                    <= 1'b0;
      WB_RD_O                    <= 1'b0;
      WB_STB_O                   <= 1'b0;

      FABRIC_ASYNC_ACK_TOGGLE_O  <= 1'b0;

      ahb_async_stb_toggle_i_1ff <= 1'b0;
      ahb_async_stb_toggle_i_2ff <= 1'b0;
      ahb_async_stb_toggle_i_3ff <= 1'b0;

    end else begin

      fabric_to_ahb_state        <= fabric_to_ahb_state_nxt;

      A2F_HRDATAS                <= A2F_HRDATAS_nxt;

      WB_CYC_O                   <= WB_CYC_O_nxt;
      WB_BYTE_STB_O              <= WB_BYTE_STB_O_nxt;
      WB_WE_O                    <= WB_WE_O_nxt;
      WB_RD_O                    <= WB_RD_O_nxt;
      WB_STB_O                   <= WB_STB_O_nxt;

      FABRIC_ASYNC_ACK_TOGGLE_O  <= FABRIC_ASYNC_ACK_TOGGLE_O_nxt;

      ahb_async_stb_toggle_i_1ff <= AHB_ASYNC_STB_TOGGLE_I;
      ahb_async_stb_toggle_i_2ff <= ahb_async_stb_toggle_i_1ff;
      ahb_async_stb_toggle_i_3ff <= ahb_async_stb_toggle_i_2ff;

    end
  end


  // Define the Fabric Interface Statemachine
  //
  always @(
            ahb_async_stb             or
            AHB_ASYNC_READ_EN_I       or
            AHB_ASYNC_WRITE_EN_I      or
            AHB_ASYNC_BYTE_STROBE_I   or
            A2F_HRDATAS               or
            WB_ACK_I                  or
            WB_DAT_I                  or
            WB_CYC_O                  or
            WB_BYTE_STB_O             or
            WB_WE_O                   or
            WB_RD_O                   or
            WB_STB_O                  or
            FABRIC_ASYNC_ACK_TOGGLE_O or
            fabric_to_ahb_state
    )
    begin
    case (fabric_to_ahb_state)
      FAB_ASYNC_IDLE: begin
        FABRIC_ASYNC_ACK_TOGGLE_O_nxt <= FABRIC_ASYNC_ACK_TOGGLE_O;
        A2F_HRDATAS_nxt               <= A2F_HRDATAS;

        case (ahb_async_stb)
          1'b0:  // Wait for an AHB Transfer
            begin
            fabric_to_ahb_state_nxt <= FAB_ASYNC_IDLE;

            WB_CYC_O_nxt            <= 1'b0;
            WB_BYTE_STB_O_nxt       <= 4'b0;
            WB_WE_O_nxt             <= 1'b0;
            WB_RD_O_nxt             <= 1'b0;
            WB_STB_O_nxt            <= 1'b0;

          end
          1'b1:  // AHB Transfer Detected
            begin
            fabric_to_ahb_state_nxt <= FAB_ASYNC_WAIT;

            WB_CYC_O_nxt            <= 1'b1;
            WB_BYTE_STB_O_nxt       <= AHB_ASYNC_BYTE_STROBE_I;
            WB_WE_O_nxt             <= AHB_ASYNC_WRITE_EN_I;
            WB_RD_O_nxt             <= AHB_ASYNC_READ_EN_I;
            WB_STB_O_nxt            <= 1'b1;

          end
        endcase
      end
      FAB_ASYNC_WAIT: begin

        case (WB_ACK_I)
          1'b0:  // Wait for Acknowledge from Fabric Interface
            begin
            fabric_to_ahb_state_nxt       <= FAB_ASYNC_WAIT;

            A2F_HRDATAS_nxt               <= A2F_HRDATAS;

            WB_CYC_O_nxt                  <= WB_CYC_O;
            WB_BYTE_STB_O_nxt             <= WB_BYTE_STB_O;
            WB_WE_O_nxt                   <= WB_WE_O;
            WB_RD_O_nxt                   <= WB_RD_O;
            WB_STB_O_nxt                  <= WB_STB_O;

            FABRIC_ASYNC_ACK_TOGGLE_O_nxt <= FABRIC_ASYNC_ACK_TOGGLE_O;
          end
          1'b1:  // Received Acknowledge from Fabric Interface
            begin
            fabric_to_ahb_state_nxt       <= FAB_ASYNC_IDLE;

            A2F_HRDATAS_nxt               <= WB_DAT_I;

            WB_CYC_O_nxt                  <= 1'b0;
            WB_BYTE_STB_O_nxt             <= 4'b0;
            WB_WE_O_nxt                   <= 1'b0;
            WB_RD_O_nxt                   <= 1'b0;
            WB_STB_O_nxt                  <= 1'b0;

            FABRIC_ASYNC_ACK_TOGGLE_O_nxt <= ~FABRIC_ASYNC_ACK_TOGGLE_O;
          end
        endcase
      end
      default: begin
        fabric_to_ahb_state_nxt       <= FAB_ASYNC_IDLE;

        A2F_HRDATAS_nxt               <= A2F_HRDATAS;

        WB_CYC_O_nxt                  <= 1'b0;
        WB_BYTE_STB_O_nxt             <= 4'b0;
        WB_WE_O_nxt                   <= 1'b0;
        WB_RD_O_nxt                   <= 1'b0;
        WB_STB_O_nxt                  <= 1'b0;

        FABRIC_ASYNC_ACK_TOGGLE_O_nxt <= FABRIC_ASYNC_ACK_TOGGLE_O;
      end
    endcase
  end

endmodule

`timescale 1ns / 10ps

module ahb2fb_asynbrig (

    // AHB Slave Interface to AHB Bus Matrix
    //
    A2F_HCLK,
    A2F_HRESET,

    A2F_HADDRS,
    A2F_HSEL,
    A2F_HTRANSS,
    A2F_HSIZES,
    A2F_HWRITES,
    A2F_HREADYS,
    A2F_HWDATAS,

    A2F_HREADYOUTS,
    A2F_HRESPS,
    A2F_HRDATAS,

    // Fabric Wishbone Bus
    //
    WB_CLK_I,
    WB_RST_I,
    WB_DAT_I,
    WB_ACK_I,

    WB_ADR_O,
    WB_CYC_O,
    WB_BYTE_STB_O,
    WB_WE_O,
    WB_RD_O,
    WB_STB_O,
    WB_DAT_O

);


  //-----Port Parameters-----------------
  //

  parameter ADDRWIDTH = 32;
  parameter DATAWIDTH = 32;
  parameter APERWIDTH = 17;


  //-----Port Signals--------------------
  //

  input A2F_HCLK;  // Clock
  input A2F_HRESET;  // Reset

  // AHB connection to master
  //
  input [ADDRWIDTH-1:0] A2F_HADDRS;
  input A2F_HSEL;
  input [1:0] A2F_HTRANSS;
  input [2:0] A2F_HSIZES;
  input A2F_HWRITES;
  input A2F_HREADYS;
  input [DATAWIDTH-1:0] A2F_HWDATAS;

  output A2F_HREADYOUTS;
  output A2F_HRESPS;
  output [DATAWIDTH-1:0] A2F_HRDATAS;

  // Wishbone connection to Fabric IP
  //
  input WB_CLK_I;  // Fabric Clock Input         from Fabric
  input WB_RST_I;  // Fabric Reset Input         from Fabric
  input [DATAWIDTH-1:0] WB_DAT_I;  // Read Data Bus              from Fabric
  input WB_ACK_I;  // Transfer Cycle Acknowledge from Fabric

  output [APERWIDTH-1:0] WB_ADR_O;  // Address Bus                to   Fabric
  output WB_CYC_O;  // Cycle Chip Select          to   Fabric
  output [3:0] WB_BYTE_STB_O;  // Byte Select                to   Fabric
  output WB_WE_O;  // Write Enable               to   Fabric
  output WB_RD_O;  // Read  Enable               to   Fabric
  output WB_STB_O;  // Strobe Signal              to   Fabric
  output [DATAWIDTH-1:0] WB_DAT_O;  // Write Data Bus             to   Fabric


  wire                 A2F_HCLK;  // Clock
  wire                 A2F_HRESET;  // Reset

  // AHB connection to master
  //
  wire [ADDRWIDTH-1:0] A2F_HADDRS;
  wire                 A2F_HSEL;
  wire [          1:0] A2F_HTRANSS;
  wire [          2:0] A2F_HSIZES;
  wire                 A2F_HWRITES;
  wire                 A2F_HREADYS;
  wire [DATAWIDTH-1:0] A2F_HWDATAS;

  wire                 A2F_HREADYOUTS;
  wire                 A2F_HRESPS;
  wire [DATAWIDTH-1:0] A2F_HRDATAS;


  // Wishbone connection to Fabric IP
  //
  wire                 WB_CLK_I;  // Fabric Clock Input         from Fabric
  wire                 WB_RST_I;  // Fabric Reset Input         from Fabric
  wire [DATAWIDTH-1:0] WB_DAT_I;  // Read Data Bus              from Fabric
  wire                 WB_ACK_I;  // Transfer Cycle Acknowledge from Fabric

  wire [APERWIDTH-1:0] WB_ADR_O;  // Address Bus (128KB)        to   Fabric
  wire                 WB_CYC_O;  // Cycle Chip Select          to   Fabric
  wire [          3:0] WB_BYTE_STB_O;  // Byte Select                to   Fabric
  wire                 WB_WE_O;  // Write Enable               to   Fabric
  wire                 WB_RD_O;  // Read  Enable               to   Fabric
  wire                 WB_STB_O;  // Strobe Signal              to   Fabric
  wire [DATAWIDTH-1:0] WB_DAT_O;  // Write Data Bus             to   Fabric


  //------Define Parameters---------
  //

  //
  // None at this time
  //


  //-----Internal Signals--------------------
  //

  // Register module interface signals
  wire [APERWIDTH-1:0] ahb_async_addr;
  wire                 ahb_async_read_en;
  wire                 ahb_async_write_en;
  wire [          3:0] ahb_async_byte_strobe;

  wire                 ahb_async_stb_toggle;

  wire                 fabric_async_ack_toggle;


  //------Logic Operations----------
  //

  // Define the data input from the AHB and output to the fabric
  //
  // Note: Due to the nature of the bus timing, there is no need to register
  //       this value locally.
  //
  assign WB_DAT_O = A2F_HWDATAS;

  // Define the Address bus output from the AHB and output to the fabric
  //
  // Note: Due to the nature of the bus timing, there is no need to register
  //       this value locally.
  //
  assign WB_ADR_O = ahb_async_addr;


  //------Instantiate Modules----------------
  //

  // Interface block to convert AHB transfers to simple read/write
  // controls.
  ahb2fb_asynbrig_if #(

      .DATAWIDTH(DATAWIDTH),
      .APERWIDTH(APERWIDTH)

  ) u_FFE_ahb_to_fabric_async_bridge_interface (
      .A2F_HCLK  (A2F_HCLK),
      .A2F_HRESET(A2F_HRESET),

      // Input slave port: 32 bit data bus interface
      .A2F_HSEL   (A2F_HSEL),
      .A2F_HADDRS (A2F_HADDRS[APERWIDTH-1:0]),
      .A2F_HTRANSS(A2F_HTRANSS),
      .A2F_HSIZES (A2F_HSIZES),
      .A2F_HWRITES(A2F_HWRITES),
      .A2F_HREADYS(A2F_HREADYS),

      .A2F_HREADYOUTS(A2F_HREADYOUTS),
      .A2F_HRESPS    (A2F_HRESPS),

      // Register interface
      .AHB_ASYNC_ADDR_O       (ahb_async_addr),
      .AHB_ASYNC_READ_EN_O    (ahb_async_read_en),
      .AHB_ASYNC_WRITE_EN_O   (ahb_async_write_en),
      .AHB_ASYNC_BYTE_STROBE_O(ahb_async_byte_strobe),
      .AHB_ASYNC_STB_TOGGLE_O (ahb_async_stb_toggle),

      .FABRIC_ASYNC_ACK_TOGGLE_I(fabric_async_ack_toggle)

  );


  fb2ahb_asynbrig_if  //                                     #(
  //                                      )

  u_FFE_fabric_to_ahb_async_bridge_interface (
      .A2F_HRDATAS(A2F_HRDATAS),

      .AHB_ASYNC_READ_EN_I    (ahb_async_read_en),
      .AHB_ASYNC_WRITE_EN_I   (ahb_async_write_en),
      .AHB_ASYNC_BYTE_STROBE_I(ahb_async_byte_strobe),
      .AHB_ASYNC_STB_TOGGLE_I (ahb_async_stb_toggle),

      .WB_CLK_I(WB_CLK_I),  // Fabric Clock Input         from Fabric
      .WB_RST_I(WB_RST_I),  // Fabric Reset Input         from Fabric
      .WB_ACK_I(WB_ACK_I),  // Transfer Cycle Acknowledge from Fabric
      .WB_DAT_I(WB_DAT_I),  // Data Bus Input             from Fabric

      .WB_CYC_O     (WB_CYC_O),  // Cycle Chip Select          to   Fabric
      .WB_BYTE_STB_O(WB_BYTE_STB_O),  // Byte Select                to   Fabric
      .WB_WE_O      (WB_WE_O),  // Write Enable               to   Fabric
      .WB_RD_O      (WB_RD_O),  // Read  Enable               to   Fabric
      .WB_STB_O     (WB_STB_O),  // Strobe Signal              to   Fabric

      .FABRIC_ASYNC_ACK_TOGGLE_O(fabric_async_ack_toggle)

  );
endmodule


`timescale 1ns / 10ps
module qlal4s3b_cell_macro_bfm (

    // AHB-To-Fabric Bridge
    //
    WBs_ADR,
    WBs_CYC,
    WBs_BYTE_STB,
    WBs_WE,
    WBs_RD,
    WBs_STB,
    WBs_WR_DAT,
    WB_CLK,
    WB_RST,
    WBs_RD_DAT,
    WBs_ACK,
    //
    // SDMA Signals
    //
    SDMA_Req,
    SDMA_Sreq,
    SDMA_Done,
    SDMA_Active,
    //
    // FB Interrupts
    //
    FB_msg_out,
    FB_Int_Clr,
    FB_Start,
    FB_Busy,
    //
    // FB Clocks
    //
    Sys_Clk0,
    Sys_Clk0_Rst,
    Sys_Clk1,
    Sys_Clk1_Rst,
    //
    // Packet FIFO
    //
    Sys_PKfb_Clk,
    Sys_PKfb_Rst,
    FB_PKfbData,
    FB_PKfbPush,
    FB_PKfbSOF,
    FB_PKfbEOF,
    FB_PKfbOverflow,
    //
    // Sensor Interface
    //
    Sensor_Int,
    TimeStamp,
    //
    // SPI Master APB Bus
    //
    Sys_Pclk,
    Sys_Pclk_Rst,
    Sys_PSel,
    SPIm_Paddr,
    SPIm_PEnable,
    SPIm_PWrite,
    SPIm_PWdata,
    SPIm_Prdata,
    SPIm_PReady,
    SPIm_PSlvErr,
    //
    // Misc
    //
    Device_ID,
    //
    // FBIO Signals
    //
    FBIO_In,
    FBIO_In_En,
    FBIO_Out,
    FBIO_Out_En,
    //
    // ???
    //
    SFBIO,
    Device_ID_6S,
    Device_ID_4S,
    SPIm_PWdata_26S,
    SPIm_PWdata_24S,
    SPIm_PWdata_14S,
    SPIm_PWdata_11S,
    SPIm_PWdata_0S,
    SPIm_Paddr_8S,
    SPIm_Paddr_6S,
    FB_PKfbPush_1S,
    FB_PKfbData_31S,
    FB_PKfbData_21S,
    FB_PKfbData_19S,
    FB_PKfbData_9S,
    FB_PKfbData_6S,
    Sys_PKfb_ClkS,
    FB_BusyS,
    WB_CLKS
);
  //------Port Parameters----------------
  //

  //
  // None at this time
  //

  //------Port Signals-------------------
  //

  //
  // AHB-To-Fabric Bridge
  //
  output [16:0] WBs_ADR;
  output WBs_CYC;
  output [3:0] WBs_BYTE_STB;
  output WBs_WE;
  output WBs_RD;
  output WBs_STB;
  output [31:0] WBs_WR_DAT;
  input WB_CLK;
  output WB_RST;
  input [31:0] WBs_RD_DAT;
  input WBs_ACK;
  //
  // SDMA Signals
  //
  input [3:0] SDMA_Req;
  input [3:0] SDMA_Sreq;
  output [3:0] SDMA_Done;
  output [3:0] SDMA_Active;
  //
  // FB Interrupts
  //
  input [3:0] FB_msg_out;
  input [7:0] FB_Int_Clr;
  output FB_Start;
  input FB_Busy;
  //
  // FB Clocks
  //
  output Sys_Clk0;
  output Sys_Clk0_Rst;
  output Sys_Clk1;
  output Sys_Clk1_Rst;
  //
  // Packet FIFO
  //
  input Sys_PKfb_Clk;
  output Sys_PKfb_Rst;
  input [31:0] FB_PKfbData;
  input [3:0] FB_PKfbPush;
  input FB_PKfbSOF;
  input FB_PKfbEOF;
  output FB_PKfbOverflow;
  //
  // Sensor Interface
  //
  output [7:0] Sensor_Int;
  output [23:0] TimeStamp;
  //
  // SPI Master APB Bus
  //
  output Sys_Pclk;
  output Sys_Pclk_Rst;
  input Sys_PSel;
  input [15:0] SPIm_Paddr;
  input SPIm_PEnable;
  input SPIm_PWrite;
  input [31:0] SPIm_PWdata;
  output [31:0] SPIm_Prdata;
  output SPIm_PReady;
  output SPIm_PSlvErr;
  //
  // Misc
  //
  input [15:0] Device_ID;
  //
  // FBIO Signals
  //
  output [13:0] FBIO_In;
  input [13:0] FBIO_In_En;
  input [13:0] FBIO_Out;
  input [13:0] FBIO_Out_En;
  //
  // ???
  //
  inout [13:0] SFBIO;
  input Device_ID_6S;
  input Device_ID_4S;
  input SPIm_PWdata_26S;
  input SPIm_PWdata_24S;
  input SPIm_PWdata_14S;
  input SPIm_PWdata_11S;
  input SPIm_PWdata_0S;
  input SPIm_Paddr_8S;
  input SPIm_Paddr_6S;
  input FB_PKfbPush_1S;
  input FB_PKfbData_31S;
  input FB_PKfbData_21S;
  input FB_PKfbData_19S;
  input FB_PKfbData_9S;
  input FB_PKfbData_6S;
  input Sys_PKfb_ClkS;
  input FB_BusyS;
  input WB_CLKS;


  wire [16:0] WBs_ADR;
  wire        WBs_CYC;
  wire [ 3:0] WBs_BYTE_STB;
  wire        WBs_WE;
  wire        WBs_RD;
  wire        WBs_STB;
  wire [31:0] WBs_WR_DAT;
  wire        WB_CLK;
  reg         WB_RST;
  wire [31:0] WBs_RD_DAT;
  wire        WBs_ACK;

  wire [ 3:0] SDMA_Req;
  wire [ 3:0] SDMA_Sreq;
  //reg      [3:0]  SDMA_Done;//SDMA BFM
  //reg      [3:0]  SDMA_Active;//SDMA BFM
  wire [ 3:0] SDMA_Done;
  wire [ 3:0] SDMA_Active;

  wire [ 3:0] FB_msg_out;
  wire [ 7:0] FB_Int_Clr;
  reg         FB_Start;
  wire        FB_Busy;

  wire        Sys_Clk0;
  reg         Sys_Clk0_Rst;
  wire        Sys_Clk1;
  reg         Sys_Clk1_Rst;

  wire        Sys_PKfb_Clk;
  reg         Sys_PKfb_Rst;
  wire [31:0] FB_PKfbData;
  wire [ 3:0] FB_PKfbPush;
  wire        FB_PKfbSOF;
  wire        FB_PKfbEOF;
  reg         FB_PKfbOverflow;

  reg  [ 7:0] Sensor_Int;
  reg  [23:0] TimeStamp;

  reg         Sys_Pclk;
  reg         Sys_Pclk_Rst;
  wire        Sys_PSel;

  wire [15:0] SPIm_Paddr;
  wire        SPIm_PEnable;
  wire        SPIm_PWrite;
  wire [31:0] SPIm_PWdata;
  reg  [31:0] SPIm_Prdata;
  reg         SPIm_PReady;
  reg         SPIm_PSlvErr;

  wire [15:0] Device_ID;

  reg  [13:0] FBIO_In;
  wire [13:0] FBIO_In_En;
  wire [13:0] FBIO_Out;
  wire [13:0] FBIO_Out_En;

  wire [13:0] SFBIO;
  wire        Device_ID_6S;
  wire        Device_ID_4S;

  wire        SPIm_PWdata_26S;
  wire        SPIm_PWdata_24S;
  wire        SPIm_PWdata_14S;
  wire        SPIm_PWdata_11S;
  wire        SPIm_PWdata_0S;
  wire        SPIm_Paddr_8S;
  wire        SPIm_Paddr_6S;

  wire        FB_PKfbPush_1S;
  wire        FB_PKfbData_31S;
  wire        FB_PKfbData_21S;
  wire        FB_PKfbData_19S;
  wire        FB_PKfbData_9S;
  wire        FB_PKfbData_6S;
  wire        Sys_PKfb_ClkS;

  wire        FB_BusyS;
  wire        WB_CLKS;


  //------Define Parameters--------------
  //

  parameter ADDRWIDTH = 32;
  parameter DATAWIDTH = 32;
  parameter APERWIDTH = 17;

  parameter ENABLE_AHB_REG_WR_DEBUG_MSG = 1'b1;
  parameter ENABLE_AHB_REG_RD_DEBUG_MSG = 1'b1;

  parameter       T_CYCLE_CLK_SYS_CLK0        = 200;//230;//ACSLIPTEST-230;//100;//180;//(1000.0/(80.0/16)) ; // Default EOS S3B Clock Rate
  parameter       T_CYCLE_CLK_SYS_CLK1        = 650;//3906;//650;////83.33;//250;//30517;//(1000.0/(80.0/16)) ; // Default EOS S3B Clock Rate
  parameter T_CYCLE_CLK_A2F_HCLK = (1000.0 / (80.0 / 12));  // Default EOS S3B Clock Rate

  parameter SYS_CLK0_RESET_LOOP = 5;  //4.34;//5;
  parameter SYS_CLK1_RESET_LOOP = 5;
  parameter WB_CLK_RESET_LOOP = 5;
  parameter A2F_HCLK_RESET_LOOP = 5;


  //------Internal Signals---------------
  //

  integer        Sys_Clk0_Reset_Loop_Cnt;
  integer        Sys_Clk1_Reset_Loop_Cnt;
  integer        WB_CLK_Reset_Loop_Cnt;
  integer        A2F_HCLK_Reset_Loop_Cnt;


  wire           A2F_HCLK;
  reg            A2F_HRESET;

  wire    [31:0] A2F_HADDRS;
  wire           A2F_HSEL;
  wire    [ 1:0] A2F_HTRANSS;
  wire    [ 2:0] A2F_HSIZES;
  wire           A2F_HWRITES;
  wire           A2F_HREADYS;
  wire    [31:0] A2F_HWDATAS;

  wire           A2F_HREADYOUTS;
  wire           A2F_HRESPS;
  wire    [31:0] A2F_HRDATAS;


  //------Logic Operations---------------
  //

  // Apply Reset to Sys_Clk0 domain
  //
  initial begin

    Sys_Clk0_Rst <= 1'b1;
`ifndef YOSYS
    for (
        Sys_Clk0_Reset_Loop_Cnt = 0;
        Sys_Clk0_Reset_Loop_Cnt < SYS_CLK0_RESET_LOOP;
        Sys_Clk0_Reset_Loop_Cnt = Sys_Clk0_Reset_Loop_Cnt + 1
    ) begin
      wait(Sys_Clk0 == 1'b1) #1;
      wait(Sys_Clk0 == 1'b0) #1;
    end

    wait(Sys_Clk0 == 1'b1) #1;
`endif
    Sys_Clk0_Rst <= 1'b0;

  end

  // Apply Reset to Sys_Clk1 domain
  //
  initial begin

    Sys_Clk1_Rst <= 1'b1;
`ifndef YOSYS
    for (
        Sys_Clk1_Reset_Loop_Cnt = 0;
        Sys_Clk1_Reset_Loop_Cnt < SYS_CLK1_RESET_LOOP;
        Sys_Clk1_Reset_Loop_Cnt = Sys_Clk1_Reset_Loop_Cnt + 1
    ) begin
      wait(Sys_Clk1 == 1'b1) #1;
      wait(Sys_Clk1 == 1'b0) #1;
    end

    wait(Sys_Clk1 == 1'b1) #1;
`endif
    Sys_Clk1_Rst <= 1'b0;

  end

  // Apply Reset to the Wishbone domain
  //
  // Note: In the ASSP, this reset is distict from the reset domains for Sys_Clk[1:0].
  //
  initial begin

    WB_RST <= 1'b1;
`ifndef YOSYS
    for (
        WB_CLK_Reset_Loop_Cnt = 0;
        WB_CLK_Reset_Loop_Cnt < WB_CLK_RESET_LOOP;
        WB_CLK_Reset_Loop_Cnt = WB_CLK_Reset_Loop_Cnt + 1
    ) begin
      wait(WB_CLK == 1'b1) #1;
      wait(WB_CLK == 1'b0) #1;
    end

    wait(WB_CLK == 1'b1) #1;
`endif
    WB_RST <= 1'b0;

  end

  // Apply Reset to the AHB Bus domain
  //
  // Note: The AHB bus clock domain is separate from the Sys_Clk[1:0] domains
  initial begin

    A2F_HRESET <= 1'b1;
`ifndef YOSYS
    for (
        A2F_HCLK_Reset_Loop_Cnt = 0;
        A2F_HCLK_Reset_Loop_Cnt < A2F_HCLK_RESET_LOOP;
        A2F_HCLK_Reset_Loop_Cnt = A2F_HCLK_Reset_Loop_Cnt + 1
    ) begin
      wait(A2F_HCLK == 1'b1) #1;
      wait(A2F_HCLK == 1'b0) #1;
    end

    wait(A2F_HCLK == 1'b1) #1;
`endif
    A2F_HRESET <= 1'b0;

  end

  // Initialize all outputs
  //
  // Note: These may be replaced in the future by BFMs as the become available.
  //
  //       These registers allow test bench routines to drive these signals as needed.
  //
  initial begin

    //
    // SDMA Signals
    //
    //SDMA_Done       <=  4'h0;//Added SDMA BFM
    // SDMA_Active     <=  4'h0;//Added SDMA BFM

    //
    // FB Interrupts
    //
    FB_Start        <= 1'b0;

    //
    // Packet FIFO
    //
    Sys_PKfb_Rst    <= 1'b0;
    FB_PKfbOverflow <= 1'b0;

    //
    // Sensor Interface
    //
    Sensor_Int      <= 8'h0;
    TimeStamp       <= 24'h0;

    //
    // SPI Master APB Bus
    //
    Sys_Pclk        <= 1'b0;
    Sys_Pclk_Rst    <= 1'b0;

    SPIm_Prdata     <= 32'h0;
    SPIm_PReady     <= 1'b0;
    SPIm_PSlvErr    <= 1'b0;

    //
    // FBIO Signals
    //
    FBIO_In         <= 14'h0;

  end


  //------Instantiate Modules------------
  //

  ahb2fb_asynbrig #(
      .ADDRWIDTH(ADDRWIDTH),
      .DATAWIDTH(DATAWIDTH),
      .APERWIDTH(APERWIDTH)
  ) u_ffe_ahb_to_fabric_async_bridge (
      // AHB Slave Interface to AHB Bus Matrix
      //
      .A2F_HCLK  (A2F_HCLK),
      .A2F_HRESET(A2F_HRESET),

      .A2F_HADDRS (A2F_HADDRS),
      .A2F_HSEL   (A2F_HSEL),
      .A2F_HTRANSS(A2F_HTRANSS),
      .A2F_HSIZES (A2F_HSIZES),
      .A2F_HWRITES(A2F_HWRITES),
      .A2F_HREADYS(A2F_HREADYS),
      .A2F_HWDATAS(A2F_HWDATAS),

      .A2F_HREADYOUTS(A2F_HREADYOUTS),
      .A2F_HRESPS    (A2F_HRESPS),
      .A2F_HRDATAS   (A2F_HRDATAS),

      // Fabric Wishbone Bus
      //
      .WB_CLK_I(WB_CLK),
      .WB_RST_I(WB_RST),
      .WB_DAT_I(WBs_RD_DAT),
      .WB_ACK_I(WBs_ACK),

      .WB_ADR_O     (WBs_ADR),
      .WB_CYC_O     (WBs_CYC),
      .WB_BYTE_STB_O(WBs_BYTE_STB),
      .WB_WE_O      (WBs_WE),
      .WB_RD_O      (WBs_RD),
      .WB_STB_O     (WBs_STB),
      .WB_DAT_O     (WBs_WR_DAT)

  );


  ahb_gen_bfm #(
      .ADDRWIDTH                  (ADDRWIDTH),
      .DATAWIDTH                  (DATAWIDTH),
      .DEFAULT_AHB_ADDRESS        ({(ADDRWIDTH) {1'b1}}),
      .STD_CLK_DLY                (2),
      .ENABLE_AHB_REG_WR_DEBUG_MSG(ENABLE_AHB_REG_WR_DEBUG_MSG),
      .ENABLE_AHB_REG_RD_DEBUG_MSG(ENABLE_AHB_REG_RD_DEBUG_MSG)
  ) u_ahb_gen_bfm (
      // AHB Slave Interface to AHB Bus Matrix
      //
      .A2F_HCLK  (A2F_HCLK),
      .A2F_HRESET(A2F_HRESET),

      .A2F_HADDRS (A2F_HADDRS),
      .A2F_HSEL   (A2F_HSEL),
      .A2F_HTRANSS(A2F_HTRANSS),
      .A2F_HSIZES (A2F_HSIZES),
      .A2F_HWRITES(A2F_HWRITES),
      .A2F_HREADYS(A2F_HREADYS),
      .A2F_HWDATAS(A2F_HWDATAS),

      .A2F_HREADYOUTS(A2F_HREADYOUTS),
      .A2F_HRESPS    (A2F_HRESPS),
      .A2F_HRDATAS   (A2F_HRDATAS)

  );

  // Define the clock cycle times.
  //
  // Note:    Values are calculated to output in units of nS.
  //
  oscillator_s1 #(
      .T_CYCLE_CLK(T_CYCLE_CLK_SYS_CLK0)
  ) u_osc_sys_clk0 (
      .OSC_CLK_EN(1'b1),
      .OSC_CLK(Sys_Clk0)
  );
  oscillator_s1 #(
      .T_CYCLE_CLK(T_CYCLE_CLK_SYS_CLK1)
  ) u_osc_sys_clk1 (
      .OSC_CLK_EN(1'b1),
      .OSC_CLK(Sys_Clk1)
  );
  oscillator_s1 #(
      .T_CYCLE_CLK(T_CYCLE_CLK_A2F_HCLK)
  ) u_osc_a2f_hclk (
      .OSC_CLK_EN(1'b1),
      .OSC_CLK(A2F_HCLK)
  );


  //SDMA bfm
  sdma_bfm sdma_bfm_inst0 (
      .sdma_req_i			( SDMA_Req),
      .sdma_sreq_i		( SDMA_Sreq),
      .sdma_done_o		( SDMA_Done),
      .sdma_active_o		( SDMA_Active)
  );


endmodule  /* qlal4s3b_cell_macro_bfm*/

(* keep *)
module qlal4s3b_cell_macro (
    input WB_CLK,
    input WBs_ACK,
    input [31:0] WBs_RD_DAT,
    output [3:0] WBs_BYTE_STB,
    output WBs_CYC,
    output WBs_WE,
    output WBs_RD,
    output WBs_STB,
    output [16:0] WBs_ADR,
    input [3:0] SDMA_Req,
    input [3:0] SDMA_Sreq,
    output [3:0] SDMA_Done,
    output [3:0] SDMA_Active,
    input [3:0] FB_msg_out,
    input [7:0] FB_Int_Clr,
    output FB_Start,
    input FB_Busy,
    output WB_RST,
    output Sys_PKfb_Rst,
    output Clk_C16,
    output Clk_C16_Rst,
    output Clk_C21,
    output Clk_C21_Rst,
    output Sys_Pclk,
    output Sys_Pclk_Rst,
    input Sys_PKfb_Clk,
    input [31:0] FB_PKfbData,
    output [31:0] WBs_WR_DAT,
    input [3:0] FB_PKfbPush,
    input FB_PKfbSOF,
    input FB_PKfbEOF,
    output [7:0] Sensor_Int,
    output FB_PKfbOverflow,
    output [23:0] TimeStamp,
    input Sys_PSel,
    input [15:0] SPIm_Paddr,
    input SPIm_PEnable,
    input SPIm_PWrite,
    input [31:0] SPIm_PWdata,
    output SPIm_PReady,
    output SPIm_PSlvErr,
    output [31:0] SPIm_Prdata,
    input [15:0] Device_ID,
    input [13:0] FBIO_In_En,
    input [13:0] FBIO_Out,
    input [13:0] FBIO_Out_En,
    output [13:0] FBIO_In,
    inout [13:0] SFBIO,
    input Device_ID_6S,
    input Device_ID_4S,
    input SPIm_PWdata_26S,
    input SPIm_PWdata_24S,
    input SPIm_PWdata_14S,
    input SPIm_PWdata_11S,
    input SPIm_PWdata_0S,
    input SPIm_Paddr_8S,
    input SPIm_Paddr_6S,
    input FB_PKfbPush_1S,
    input FB_PKfbData_31S,
    input FB_PKfbData_21S,
    input FB_PKfbData_19S,
    input FB_PKfbData_9S,
    input FB_PKfbData_6S,
    input Sys_PKfb_ClkS,
    input FB_BusyS,
    input WB_CLKS
);


  qlal4s3b_cell_macro_bfm u_ASSP_bfm_inst (
      .WBs_ADR        (WBs_ADR),
      .WBs_CYC        (WBs_CYC),
      .WBs_BYTE_STB   (WBs_BYTE_STB),
      .WBs_WE         (WBs_WE),
      .WBs_RD         (WBs_RD),
      .WBs_STB        (WBs_STB),
      .WBs_WR_DAT     (WBs_WR_DAT),
      .WB_CLK         (WB_CLK),
      .WB_RST         (WB_RST),
      .WBs_RD_DAT     (WBs_RD_DAT),
      .WBs_ACK        (WBs_ACK),
      //
      // SDMA Signals
      //
      .SDMA_Req       (SDMA_Req),
      .SDMA_Sreq      (SDMA_Sreq),
      .SDMA_Done      (SDMA_Done),
      .SDMA_Active    (SDMA_Active),
      //
      // FB Interrupts
      //
      .FB_msg_out     (FB_msg_out),
      .FB_Int_Clr     (FB_Int_Clr),
      .FB_Start       (FB_Start),
      .FB_Busy        (FB_Busy),
      //
      // FB Clocks
      //
      .Sys_Clk0       (Clk_C16),
      .Sys_Clk0_Rst   (Clk_C16_Rst),
      .Sys_Clk1       (Clk_C21),
      .Sys_Clk1_Rst   (Clk_C21_Rst),
      //
      // Packet FIFO
      //
      .Sys_PKfb_Clk   (Sys_PKfb_Clk),
      .Sys_PKfb_Rst   (Sys_PKfb_Rst),
      .FB_PKfbData    (FB_PKfbData),
      .FB_PKfbPush    (FB_PKfbPush),
      .FB_PKfbSOF     (FB_PKfbSOF),
      .FB_PKfbEOF     (FB_PKfbEOF),
      .FB_PKfbOverflow(FB_PKfbOverflow),
      //
      // Sensor Interface
      //
      .Sensor_Int     (Sensor_Int),
      .TimeStamp      (TimeStamp),
      //
      // SPI Master APB Bus
      //
      .Sys_Pclk       (Sys_Pclk),
      .Sys_Pclk_Rst   (Sys_Pclk_Rst),
      .Sys_PSel       (Sys_PSel),
      .SPIm_Paddr     (SPIm_Paddr),
      .SPIm_PEnable   (SPIm_PEnable),
      .SPIm_PWrite    (SPIm_PWrite),
      .SPIm_PWdata    (SPIm_PWdata),
      .SPIm_Prdata    (SPIm_Prdata),
      .SPIm_PReady    (SPIm_PReady),
      .SPIm_PSlvErr   (SPIm_PSlvErr),
      //
      // Misc
      //
      .Device_ID      (Device_ID),
      //
      // FBIO Signals
      //
      .FBIO_In        (FBIO_In),
      .FBIO_In_En     (FBIO_In_En),
      .FBIO_Out       (FBIO_Out),
      .FBIO_Out_En    (FBIO_Out_En),
      //
      // ???
      //
      .SFBIO          (SFBIO),
      .Device_ID_6S   (Device_ID_6S),
      .Device_ID_4S   (Device_ID_4S),
      .SPIm_PWdata_26S(SPIm_PWdata_26S),
      .SPIm_PWdata_24S(SPIm_PWdata_24S),
      .SPIm_PWdata_14S(SPIm_PWdata_14S),
      .SPIm_PWdata_11S(SPIm_PWdata_11S),
      .SPIm_PWdata_0S (SPIm_PWdata_0S),
      .SPIm_Paddr_8S  (SPIm_Paddr_8S),
      .SPIm_Paddr_6S  (SPIm_Paddr_6S),
      .FB_PKfbPush_1S (FB_PKfbPush_1S),
      .FB_PKfbData_31S(FB_PKfbData_31S),
      .FB_PKfbData_21S(FB_PKfbData_21S),
      .FB_PKfbData_19S(FB_PKfbData_19S),
      .FB_PKfbData_9S (FB_PKfbData_9S),
      .FB_PKfbData_6S (FB_PKfbData_6S),
      .Sys_PKfb_ClkS  (Sys_PKfb_ClkS),
      .FB_BusyS       (FB_BusyS),
      .WB_CLKS        (WB_CLKS)
  );

endmodule  /* qlal4s3b_cell_macro */


(* keep *)
module gpio_cell_macro (

    ESEL,
    IE,
    OSEL,
    OQI,
    OQE,
    DS,
    FIXHOLD,
    IZ,
    IQZ,
    IQE,
    IQC,
    IQCS,
    IQR,
    WPD,
    INEN,
    IP
);

  input ESEL;
  input IE;
  input OSEL;
  input OQI;
  input OQE;
  input DS;
  input FIXHOLD;
  output IZ;
  output IQZ;
  input IQE;
  input IQC;
  input IQCS;
  input INEN;
  input IQR;
  input WPD;
  inout IP;

  reg EN_reg, OQ_reg, IQZ;
  wire AND_OUT;

  assign rstn = ~IQR;
  assign IQCP = IQCS ? ~IQC : IQC;

  always @(posedge IQCP or negedge rstn)
    if (~rstn) EN_reg <= 1'b0;
    else EN_reg <= IE;

  always @(posedge IQCP or negedge rstn)
    if (~rstn) OQ_reg <= 1'b0;
    else if (OQE) OQ_reg <= OQI;


  always @(posedge IQCP or negedge rstn)
    if (~rstn) IQZ <= 1'b0;
    else if (IQE) IQZ <= AND_OUT;

  assign IZ = AND_OUT;

  assign AND_OUT = INEN ? IP : 1'b0;

  assign EN = ESEL ? IE : EN_reg;

  assign OQ = OSEL ? OQI : OQ_reg;

  assign IP = EN ? OQ : 1'bz;

endmodule