Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / verif / env / common / vera / classes / sparcParams.vr

// ========== Copyright Header Begin ==========================================
// 
// OpenSPARC T2 Processor File: sparcParams.vr
// Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved
// 4150 Network Circle, Santa Clara, California 95054, U.S.A.
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// GNU General Public License for more details.
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// along with this program; if not, write to the Free Software
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// ========== Copyright Header End ============================================
#include <vera_defines.vrh>
#include <globals.vri>

// defines
#include <plusArgMacros.vri>
#include <ccx.vri>
#include <std_display_defines.vri>
#include <baseParamDefines.vri>

// classes
#include <std_display_class.vrh>
#include <baseParamsClass.vrh>

class Params extends BaseParams {

  local string className = "paramsClass";
  local StandardDisplay dbg;

  // Temporary/scratch  variables
  local string tempstr, tempstr2;
  local reg [2048:0] getstr;
  local integer i;
  local bit [63:0] tmp;

  // misc
  integer coreCount = 0;

    
  ///////////////////////////////////////
  // variables that only come in as +args (not in a config file)

  string paramPath = null;
  string paramFile = null;
  string forceParamFile = null;
  string dv_root = null;
//   reg [63:0] thread_enables = 1;

  // CCX
  reg ccxPktPrint [5];  // print packets
  reg [16:0] ccxPktPrintMask = 0;
  reg ccxPktPrintOn = 0;
  
  // MCU
  reg mcuMemPrint [2];
  reg mcuMemPrintOn = 0;
  
  string veraDiagName = null;
  string asmDiagName = null;

  //
  ///////////////////////////////////////

  
  ///////////////////////////////////////
  // config file paramaters (can also be +args)

  // -- SPC2 specific
  reg stub_l1_enable;   // if 0, disable tag table updates in ccx stub
  reg [7:0] min_ccx_gnt_delay;
  reg [7:0] max_ccx_gnt_delay;
  reg rand_ccx_gnt_enable;
  reg l2latOn;          // To use L2 latency values from file
  reg l2lat_fixed;      // Allow L2 latency to vary
  integer l2lat_value;  // L2 latency between gnt and gnt_data 
  // file names
  string l2lat_in = null;
  integer FPl2lat;          // Used for file pointers
  
  // SPC2 debug testing
  reg noDebugDrv;
  reg noDebugChecks;
  reg noDebugModes;
  reg showDebugCounts;
  reg wmrVecMask;
  integer ssModeFreq;
  integer ssModeMaxSessions;
  integer ssModeInterleaveWeight;
  reg [7:0] ssModeTidMask;
  integer ssModeMin;
  integer ssModeMax;
  integer ssModeBurstMin;
  integer ssModeBurstMax;
  integer ssModeHolesMin;
  integer ssModeHolesMax;
  integer doModeFreq;
  integer doModeMaxSessions;
  reg [7:0] doModeTidMask;
  integer doModeLenMin;
  integer doModeLenMax;
  integer   softStopFreq;
  integer   softStopMaxSessions;
  reg [7:0] softStopTidMask;
  integer   softStopLenMin;
  integer   softStopLenMax;
  reg nodebugParkExit;
  
  // POR/WMR/MBIST/LBIST
  reg        por_enable;
  reg        lbist_enable;
  reg  [2:0] mbist_mode;
  reg        mbist_enable;
  reg        mbist_errinj;
  reg  [7:0] user_loop_count;
  reg        user_loop_mode;
  reg [15:0] lbist_abort_count;
  reg  [2:0] lbist_run_count;
  reg        lbist_pgm;
  reg [23:0] mbist_fail_count;

  //err
  integer err_freq;
  integer err_burst_freq;
  integer err_burst_len_min;
  integer err_burst_len_max;
  integer err_ce_wt;
  integer err_nd_wt;
  reg rand_err;
  reg err_itlb_on;
  integer err_itlb_freq;
  reg err_dtlb_on;
  integer err_dtlb_freq;
  reg err_ic_on;
  integer err_ic_freq;
  reg err_dc_on;
  integer err_dc_freq;
  reg err_irf_on;
  integer err_irf_freq;
  reg err_frf_on;
  integer err_frf_freq;
  reg err_stb_on;
  integer err_stb_freq;
  reg err_sca_on;
  integer err_sca_freq;
  reg err_tcc_on;
  integer err_tcc_freq;
  reg err_tsa_on;
  integer err_tsa_freq;
  reg err_mra_on;
  integer err_mra_freq;
  reg err_l2c_on;
  integer err_l2c_freq;
  reg err_mamem_on;
  integer err_mamem_freq;
  // -- end SPC2 specific

  
  
  // Coverage Vars
  reg coverage_on;
  reg coverage_off;
  reg force_save_cov;


  // CMP regs
  reg [63:0] coreAvilableReg;
  reg [63:0] coreEnableReg;
  // copies reduced to 8
  reg [7:0] coreAvilable;
  reg [7:0] coreEnable;
  reg [2:0] coreMax = 0;  // max/highest core number (0-7)
  reg [3:0] bank_set_mask = 4'hf;
  reg [7:0] banksMask = 8'hff;
  
  // MCU BFM (CMP bench)
  integer mcuReq2ackDelayMin;
  integer mcuReq2ackDelayMax;
  integer mcuAck2dataDelayMin;
  integer mcuAck2dataDelayMax;
  integer mcuIntraDataDelayMin;
  integer mcuIntraDataDelayMax;
  integer mcuWrReq2ackDelayMin;
  integer mcuWrReq2ackDelayMax;
  integer mcuWrReq2ackFullDelay;

  // CCX BFMs (CMP/CCM bench)
  reg [7:0] enableSpcBFM; // instantiate if set
  reg [7:0] enableMemBFM; // instantiate if set
  integer stallStart;   // start stalling when this many outstanding requests
  integer stallStop;    // stop  stalling when this many outstanding requests
  integer hitRate;      // percent of time that shorter "hit" latencies will be used
  integer hitDelayMin;  // min value of latency if "hit"
  integer hitDelayMax;  // max value of latency if "hit"
  integer missDelayMin; // min value of latency if NOT "hit"
  integer missDelayMax; // max value of latency if NOT "hit"
  integer pkt2DelayMin; // min value of latency for second pkt of pair
  integer pkt2DelayMax; // max value of latency for second pkt of pair

  integer evictFloodFreq;
  integer evictFloodAmount;
  reg [7:0] evictFloodTargets;
  integer bufferFloodFreq;
  integer bufferFloodAmount;
  integer bufferFloodTarget;
  
  integer burstAmount;
  integer burstHoldoff;
  integer burstSync;

  
  // misc
  reg        hash_on;
  integer    por_delay_min;  // # clocks between POR packets
  integer    por_delay_max;  // # clocks between POR packets
  reg        pokeCorners;  // concentrate randoms on corner cases.
  reg        show_store;       // Display store data to logfile
  reg        show_load;        // Display load data to logfile
  integer    inval_rate;     // evict # times per 10000
  reg [2:0]  inval_type;
  reg[39:0]  inval_pa_min; // eviction pa range
  reg[39:0]  inval_pa_max;
  reg[1:0]   l2miss_type;  // 0,1,2 - off, on, random
  reg        forcePORstate;
  
  // interrupts
  integer    intr_tid;    // 1st TID that get Interrupt packet
  integer    intr_delay;  // # clocks between Intr packets
  integer    intr_wait;   // # clocks before Intr packets
  reg [1:0]  intr_type;   // Ext Intr type value
  reg [5:0]  intr_vect;   // Ext Intr vector value
  reg [63:0] intr_en;     // Threads that are enabled to send ext Intr

 
  // simulation
  integer maxCycle; // max clks
  integer timeOut;  // idle

  reg [63:0] finishMask;

  
  task new(StandardDisplay dbgin);
  task getCfg(string fileName);
  local task getPlus();
  task check4conflict();
}


task Params::new(StandardDisplay dbgin) {
  integer i;
  
  this.dbg = dbgin;
  for (i=0;i<5;i++) ccxPktPrint[i] = 0;
  for (i=0;i<2;i++) mcuMemPrint[i] = 0;
  this.getPlus();
  this.getCfg(paramFile);
}

// This is where it all happens. Put all knobs, +args here.
// Paramater precedence is:
// highest) If paramater is a +arg passed into vcs.
// middle)  If paramater is in the config/param file.
// last)    Default value given in getParam call.
// There will always be a value.
//
// Any vera testcase can change knobs on the fly, after the fact,
// by calling getCfg(path/testcaseTestConfig.cfg);
task Params::getCfg(string fileName = null)
{

  integer i;

  // check to see if fileName is null or bogus
  // if so, we will be using defaults only.
  if (fileName.len() < 3) fileName = null;

  // "open" config/param/knob file for the testcase, even if null!
  openFile(fileName);


  // CMP regs
  coreAvilableReg = getParam(HEX, "ASI_CORE_AVILABLE", 0, 64'hFFFFFFFFFFFFFFFF, 64'hFF);
  for (i=0;i<8;i++)
    if (coreAvilableReg[i*8+7:i*8]) {
      coreAvilable[i] = 1;
      coreMax = i;
    } else coreAvilable[i] = 0;
  coreEnableReg = getParam(HEX, "ASI_CORE_ENABLE", 0, 64'hFFFFFFFFFFFFFFFF, 64'hFF);
  for (i=0;i<8;i++)
    if (coreEnableReg[i*8+7:i*8]) {
      coreEnable[i] = 1;
      coreCount++;
    }
    else coreEnable[i] = 0;

  
  //               getParam(type,name,min,max,default,RANDOK)
  //               see base class

  // partial banks
  bank_set_mask = getParam(HEX, "bank_set_mask", 1, 4'hf, 4'hf);
  banksMask[1:0] = {bank_set_mask[0],bank_set_mask[0]};
  banksMask[3:2] = {bank_set_mask[1],bank_set_mask[1]};
  banksMask[5:4] = {bank_set_mask[2],bank_set_mask[2]};
  banksMask[7:6] = {bank_set_mask[3],bank_set_mask[3]};
      
#ifdef CMP_BENCH
  // MCU
  // delay from read request to read ack
  mcuReq2ackDelayMin = getParam(DEC, "mcuReq2ackDelayMin", 1, 500, 1);
  mcuReq2ackDelayMax = getParam(DEC, "mcuReq2ackDelayMax", 1, 500, 8);
  // delay from read ack to read data returning
  mcuAck2dataDelayMin = getParam(DEC, "mcuAck2dataDelayMin", 1, 500, 4);
  mcuAck2dataDelayMax = getParam(DEC, "mcuAck2dataDelayMax", 1, 500, 11);
  // delay between the 4 read data chunks
  mcuIntraDataDelayMin = getParam(DEC, "mcuIntraDataDelayMin", 1, 16, 1);
  mcuIntraDataDelayMax = getParam(DEC, "mcuIntraDataDelayMax", 1, 16, 9);
  // delay from write request to write ack
  mcuWrReq2ackDelayMin = getParam(DEC, "mcuWrReq2ackDelayMin", 1, 500, 2);
  mcuWrReq2ackDelayMax = getParam(DEC, "mcuWrReq2ackDelayMax", 1, 500, 5);
  // every 64 writes, really extend the ack delay as if the 8 write buffers are full.
  mcuWrReq2ackFullDelay = getParam(DEC, "mcuWrReq2ackFullDelay", 1, 500, 6);
#endif
  
  // CCX BFMs instantiate if set
  enableSpcBFM = getParam(HEX, "enableSpcBFM", 0, 8'hff, 8'h00);
  enableMemBFM = getParam(HEX, "enableMemBFM", 0, 8'hff, 8'h00);

  // CCX BFMs
  // getArray(DEC, "knobName", min, max, default, variableName, elementCount);
  //
  // percent of time that shorter "hit" latencies will be used
  hitRate = getParam(DEC, "hitRate", 1, 100, 90);
  // min value of latency if "hit"
  hitDelayMin = getParam(DEC, "hitDelayMin", 1, 30, 1);
  // max value of latency if "hit"
  hitDelayMax = getParam(DEC, "hitDelayMax", 2, 60, 5);
  // min value of latency if NOT "hit"
  missDelayMin = getParam(DEC, "missDelayMin", 1, 100, 10);
  // max value of latency if NOT "hit"
  missDelayMax = getParam(DEC, "missDelayMax", 2, 500, 20);
  // min value of latency for second pkt of pair
  pkt2DelayMin = getParam(DEC, "pkt2DelayMin", 1, 3, 1);
  // max value of latency for second pkt of pair
  pkt2DelayMax = getParam(DEC, "pkt2DelayMax", 1, 5, 3);
  // start stalling when this many outstanding requests
  // Number of cores * 8 (should be based on # cores)
  stallStart = getParam(DEC, "stallStart", 4, 50, coreCount*8);
  // stallStartNcu = (DEC, "stallStartNcu", 4, 50, coreCount*12);
  // stop  stalling when this many outstanding requests
  // Number of cores * 8 - 2 (should be based on # cores)
  stallStop = getParam(DEC, "stallStop", 2, 45, (coreCount*8)-3);

  // make responses bursty. Will burst once there are this many responses held up.
  burstAmount = getParam(DEC, "burstAmount", 0, 35, 0);
  // Will always burst when this many clocks have elapsed. Prevents starvation.
  burstHoldoff = getParam(DEC, "burstHoldoff", 10, 500, 150);
  // Setting burstSync will cause all banks to burst at once
  // if possible. All banks will follow the master bank when it bursts.
  // +burstSync=master <0-16> port number
  burstSync = getParam(DEC, "burstSync", 0, 16, 99);
  
  // CCX coverage/irritator activity. Flood of bogus evictions.
  evictFloodFreq = getParam(DEC, "evictFloodFreq", 0, 100000, 0);
  evictFloodAmount = getParam(DEC, "evictFloodAmount", 1, 100, 10);
  evictFloodTargets = getParam(HEX, "evictFloodTargets", 1, 8'hff, 1);

  // CCX coverage/irritator activity. ifills followed by evictions.
  // Will target any SPC port that does not have a real core.
  bufferFloodFreq = getParam(DEC, "bufferFloodFreq", 0, 100000, 0);
  bufferFloodAmount = getParam(DEC, "bufferFloodAmount", 1, 100, 10);
  bufferFloodTarget = getParam(HEX, "bufferFloodTarget", 0, 7, 7);


  
  
  hash_on = getParam(FLAG, "hash_on", 0, 1, 0);
  
  // clocks between POR
  por_delay_min = getParam(DEC, "por_delay_min", 1, 10000, 25);
  por_delay_max = getParam(DEC, "por_delay_max", 1, 20000, 200);

  // FC like state for SPC
  forcePORstate = getParam(FLAG, "forcePORstate", 0, 1, 0);
  
  // concentrate randoms on corner cases (if you coded it that way).
  pokeCorners = getParam(DEC, "pokeCorners", 0, 1, 0);

  // interrupts (from spc)
  // 1st TID that get Interrupt packet
  intr_tid = getParam(DEC,"intr_tid", 0, 63, RAND, RANDOK);
  // # clocks between Intr packets
  intr_delay = getParam(DEC,"intr_delay", 0, 100000, 10);
  // # clocks before Intr packets
  intr_wait = getParam(DEC,"intr_wait", 0, 100000, 3000);
  // Ext Intr type value
  intr_type = getParam(HEX, "intr_type", 0, 32'hffffffff, INTR_RESET);
  // Ext Intr vector value
  intr_vect = getParam(HEX, "intr_vect", 0, 32'hffffffff, INTR_XIR);
  // Threads that are enabled to send ext Intr
  intr_en = getParam(HEX, "intr_en", 0, 64'hFFFFFFFFFFFFFFFF, 0);

  // # times per 10000 to evict
  inval_rate = getParam(DEC, "inval_rate", 0, 10000, 0);  // Default OFF
  inval_type = getParam(DEC, "inval_type", 1, 7, 1);      // Default evict only

  inval_pa_min = getParam(HEX, "inval_pa_min", 0, 40'hffffffffff, 0);
  inval_pa_max = getParam(HEX, "inval_pa_max", 0, 40'hffffffffff, 40'hffffffffff);
  
  // value that CCX stub will use for l2miss
  l2miss_type = getParam(HEX, "l2miss_type", 0, 2'h2, 2'h2);
  
  // sim
  maxCycle = getParam(DEC,"max_cycle", 0, MAXINT,MAXINT);//,*,NOWARN); // max clks
  timeOut = getParam(DEC,"TIMEOUT", 0, MAXINT,MAXINT);//,*,NOWARN);    // idle timmer

  show_store = getParam(FLAG, "show_store", 0, 1, 0);
  show_load = getParam(FLAG, "show_load", 0, 1, 0);

  // coverage
  force_save_cov = getParam(FLAG, "force_save_cov", 0, 1, 0);
  coverage_on = getParam(FLAG, "coverage_on", 0, 1, 0);
  coverage_on = ~getParam(FLAG, "coverage_off", 0, 1, 0);

  

  //                     //
  // debug logic testing //
  //                     //
#ifdef SPC_BENCH
  // enable warm reset vector
  wmrVecMask = getParam(FLAG, "wmrVecMask", 0, 1, 0);
  // enable fast boot
  wmrVecMask = getParam(FLAG, "fast_boot", 0, 1, 0); // alias
  // do not use
  showDebugCounts = getParam(FLAG, "showDebugCounts", 0, 1, 0);
  // no vera driver
  noDebugDrv = getParam(FLAG, "noDebugDrv", 0, 1, 0);
#endif
  
  // no verilog checker
  noDebugChecks = getParam(FLAG, "noDebugChecks", 0, 1, 0);

  // cancel all use of debug knobs. for diags that can not do debug.
  noDebugModes = getParam(FLAG, "noDebugModes", 0, 1, 0);
  
  // ssModeFreq = initiate SS session every freq clocks.
  ssModeFreq = getParam(DEC, "ssModeFreq", 0, 100000, 0);
  // ssModeMaxSessions = limit SS sessions to this many sessions
  ssModeMaxSessions = getParam(DEC, "ssModeMaxSessions", 0, 100, 50);
  // ssModeInterleaveWeight = do interleaving or not within SS session based on weight
  ssModeInterleaveWeight = getParam(DEC, "ssModeInterleaveWeight", 0, 100, 40);
  // ssModeTidMask = which tids to involve in SS sessions
  ssModeTidMask = getParam(HEX, "ssModeTidMask", 0, 8'hff, 0);
  // ssModeBurstMin,ssModeBurstMax = how many steps to take per tid interleave
  ssModeBurstMin = getParam(DEC, "ssModeBurstMin", 0, 500, 10);
  ssModeBurstMax = getParam(DEC, "ssModeBurstMax", 1, 500, 250);
  // ssModeMin,ssModeMax = how many total steps to take per SS session
  ssModeMin = getParam(DEC, "ssModeMin", 0, 5000, 20+ssModeBurstMin);
  ssModeMax = getParam(DEC, "ssModeMax", 1, 5000, 500+ssModeBurstMax);
  // let dead clks pass before next SS req in session
  ssModeHolesMin = getParam(DEC, "ssModeHolesMin", 0, 500, 0);
  ssModeHolesMax = getParam(DEC, "ssModeHolesMax", 1, 500, 10);

  // doModeFreq = initiate session every freq clocks.
  doModeFreq = getParam(DEC, "doModeFreq", 0, 100000, 0);
  // doModeMaxSessions = limit DO sessions to this many sessions
  doModeMaxSessions = getParam(DEC, "doModeMaxSessions", 0, 100, 50);
  // doModeTidMask = which tids to involve in sessions
  doModeTidMask = getParam(DEC, "doModeTidMask", 0, 8'hff, 0);
  // doModeLenMin,doModeLenMax = how many total clocks to run per session
  doModeLenMin = getParam(DEC, "doModeLenMin", 1, 5000000, 200);
  doModeLenMax = getParam(DEC, "doModeLenMax", 1, 5000000, 5000);

  // softStopFreq  = initiate session every freq clocks.
  softStopFreq = getParam(DEC, "softStopFreq", 1000, 100000, 0);
  // softStopMaxSessions = limit sessions to this many sessions
  softStopMaxSessions = getParam(DEC, "softStopMaxSessions", 0, 100, 50);
  // doModeTidMask = which tids to involve in sessions
  softStopTidMask = getParam(DEC, "softStopTidMask", 0, 8'hff, 0);
  // softStopLenMin,doModeLenMax = how many total clocks to run per session
  softStopLenMin = getParam(DEC, "softStopLenMin", 0, 500, 50);
  softStopLenMax = getParam(DEC, "softStopLenMax", 1, 600, 500);

  // exit diag if it parks and we are doing do/ss/softStop
  nodebugParkExit = getParam(FLAG, "nodebugParkExit", 0, 1, 0);
  
  //                         //
  // end debug logic testing //
  //                         //



#ifdef SPC_BENCH  
  // ccx stub
  rand_ccx_gnt_enable = getParam(FLAG, "random_ccx_gnt", 0, 1, 0);
  min_ccx_gnt_delay   = getParam(DEC, "min_ccx_gnt_delay", 0, 1000, 0);
  max_ccx_gnt_delay   = getParam(DEC, "max_ccx_gnt_delay", 0, 1000, 0);
  stub_l1_enable = getParam(FLAG, "stub_l1_disable", 0, 1, 1);
  l2lat_value = getParam(DEC, "l2lat_value", 0, 500, 6);
  l2lat_fixed = getParam(FLAG, "l2lat_fixed", 0, 1, 0); 
  l2lat_in = getStringParam("latmom");

  // POR/WMR/LBIST/MBISI
  por_enable        = getParam(FLAG, "por_enable",   0, 1, 0); 
  lbist_enable      = getParam(FLAG, "lbist_enable", 0, 1, 0); 
  mbist_mode        = getParam(DEC, "mbist_mode",  0, 7, 0); 
  mbist_enable      = mbist_mode[2];
  mbist_errinj      = getParam(FLAG, "mbist_errinj", 0, 1, 0);
  user_loop_mode    = getParam(DEC, "user_loop_mode",  0, 1, 0); 
  user_loop_count   = getParam(DEC, "user_loop_count",  0, 256, 3); 
  lbist_abort_count = getParam(DEC, "lbist_abort_count",  0, 65000, 0); 
  lbist_run_count   = getParam(HEX, "lbist_run_count",  1, 7, 1); 
  lbist_pgm         = getParam(DEC, "lbist_pgm",0, 1, 0);
  mbist_fail_count  = getParam(DEC, "mbist_fail_count",  0, 16777000, 0); 

  //err
  err_freq = getParam(DEC, "err_freq", 0, 100, 10);
  err_burst_freq = getParam(DEC, "err_burst_freq", 0, 100, 5);
  err_burst_len_min = getParam(DEC, "err_burst_len_min", 0, 10, 1);
  err_burst_len_max = getParam(DEC, "err_burst_len_max", 1, 50, 10);
  err_ce_wt = getParam(DEC, "err_ce_wt", 0, 100, 50);
  err_nd_wt = getParam(DEC, "err_nd_wt", 0, 100, 25);
  rand_err = getParam(FLAG, "rand_err", 0, 1, 0);

  err_itlb_on = getParam(FLAG, "err_itlb_on", 0, 1, 0);
  err_itlb_freq = getParam(DEC, "err_itlb_freq", 0, 100, 20);
  
  err_dtlb_on = getParam(FLAG, "err_dtlb_on", 0, 1, 0);
  err_dtlb_freq = getParam(DEC, "err_dtlb_freq", 0, 100, 5);
  
  err_ic_on = getParam(FLAG, "err_ic_on", 0, 1, 0);
  err_ic_freq = getParam(DEC, "err_ic_freq", 0, 100, 20);
  
  err_dc_on = getParam(FLAG, "err_dc_on", 0, 1, 0);
  err_dc_freq = getParam(DEC, "err_dc_freq", 0, 100, 5);
  
  err_irf_on = getParam(FLAG, "err_irf_on", 0, 1, 0);
  err_irf_freq = getParam(DEC, "err_irf_freq", 0, 100, 20);
  
  err_frf_on = getParam(FLAG, "err_frf_on", 0, 1, 0);
  err_frf_freq = getParam(DEC, "err_frf_freq", 0, 100, 20);
  
  err_stb_on = getParam(FLAG, "err_stb_on", 0, 1, 0);
  err_stb_freq = getParam(DEC, "err_stb_freq", 0, 100, 20);
  
  err_sca_on = getParam(FLAG, "err_sca_on", 0, 1, 0);
  err_sca_freq = getParam(DEC, "err_sca_freq", 0, 100, 20);
  
  err_tcc_on = getParam(FLAG, "err_tcc_on", 0, 1, 0);
  err_tcc_freq = getParam(DEC, "err_tcc_freq", 0, 100, 20);
  
  err_tsa_on = getParam(FLAG, "err_tsa_on", 0, 1, 0);
  err_tsa_freq = getParam(DEC, "err_tsa_freq", 0, 100, 4);
  
  err_mra_on = getParam(FLAG, "err_mra_on", 0, 1, 0);
  err_mra_freq = getParam(DEC, "err_mra_freq", 0, 100, 20);
  
  err_l2c_on = getParam(FLAG, "err_l2c_on", 0, 1, 0);
  err_l2c_freq = getParam(DEC, "err_l2c_freq", 0, 100, 20);
  
  err_mamem_on = getParam(FLAG, "err_mamem_on", 0, 1, 0);
  err_mamem_freq = getParam(DEC, "err_mamem_freq", 0, 100, 20);
#endif




  
  // add more here...




  
  closeFile(fileName);
  check4conflict();
}

// things that are ONLY gotten from +args, not in config/paramaters file.
// strings mostly.
// Put all "knobs" in getCfg task above!!!
task Params::getPlus() {

  // +dv_root is passed in by sims. Everything lives below that.
  // +dv_root=path
  if (mChkPlusarg(dv_root=)) {
    mGetPlusargStr(dv_root=,getstr);
    tempstr.bittostr (getstr);
    dv_root = tempstr;
    //printf("\n%7d paramsClass::getPlus dv_root = %s\n",get_cycle(),dv_root);
  }

  // If all param files are in one dir or are along one path, why not
  // get that partial path and then go from there? If you set it, you
  // should use it.
  // Put in bench.config as vcs_run_arg=+paramPath=verif/diag/bench.
  // Will prepend dv_root.  +paramPath=path
  if (mChkPlusarg(paramPath=)) {
    mGetPlusargStr(paramPath=,getstr);
    tempstr.bittostr (getstr);
    paramPath = tempstr;
  }

  // You could pass in the default location (in bench.config) for a
  // default paramFile that will be used when none other is given, either
  // on the command line or in the testlist (which becomes the command line).
  // +defaultParam

  // Look for +paramFile= to append to +paramPath=path
  // +paramFile=file.cfg
  if (mChkPlusarg(paramFile=)) {
    mGetPlusargStr(paramFile=,getstr);
    tempstr.bittostr (getstr);
    paramFile = tempstr;
    //printf("%7d paramsClass::getPlus paramFile = %s\n",get_cycle(),paramFile);
  }

  // Look for +forceParamFile= so user can force a param/config/knobs file.
  // Will ignore +paramPath= and +paramFile= and +dv_root=
  // +forceParamFile=FULLPATH/slowMem.cfg
  if (mChkPlusarg(forceParamFile=)) {
    mGetPlusargStr(forceParamFile=,getstr);
    tempstr.bittostr (getstr);
    forceParamFile = tempstr;
    printf("\n%7d paramsClass::getPlus forceParamFile = %s\n",get_cycle(),forceParamFile);
  }

  // OK make sense of it...
  if (forceParamFile !== null) {
    printf("\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
    printf("using forceParamFile: %s\n",forceParamFile);
    printf("You probably need to repeat this to reproduce failures!\n");
    printf("Use -vcs_run_args=+forceParamFile=%s to do that!\n",forceParamFile);
    printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
  }
  else if (paramFile !== null) {
    printf("\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
    printf("using paramFile: %s\n",paramFile);
    printf("You may need to repeat this to reproduce failures!\n");
    printf("Use -vcs_run_args=+paramFile=%s (or +forceParamFile=) to do that!\n",paramFile);
    printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
  }

  // now use paramFile. May be null and if so, default params will be used.
  if (paramFile !== null) {
    paramFile = {paramPath,paramFile};
  }
  if (forceParamFile !== null) {
    paramFile = forceParamFile;
  }

  // what kind of diags are running?
  if (mChkPlusarg(vera_diag_name=)) {
    mGetPlusargStr(vera_diag_name=,getstr);
    tempstr.bittostr (getstr);
    veraDiagName = tempstr;
  }

  if (mChkPlusarg(asm_diag_name=)) {
    mGetPlusargStr(asm_diag_name=,getstr);
    tempstr.bittostr (getstr);
    asmDiagName = tempstr;
  }

  // only Verilog knows what this is because it can be randomized in verilog.
  // Use gUtil.getThreadEnables or sparcBenchUtils_if.th_check_enable
//   if (mChkPlusarg(thread=)) {
//     mGetPlusargStr(thread=,getstr);
//     tempstr.bittostr(getstr);
//     if (tempstr == "all") getstr = 64'hffffffffffffffff; // special case
//     else getstr = tempstr.atohex();
//     thread_enables = getstr;
//   }

  // CCX packet print
  if (mChkPlusarg(ccxPktPrint=)) {
    mGetPlusargStr(ccxPktPrint=,getstr);
    tempstr.bittostr (getstr);
    if (tempstr == "all") {
      ccxPktPrint[PP_PCX] = 1;
      ccxPktPrint[PP_CPX] = 1;
    }
    else if (tempstr == "pcx") ccxPktPrint[PP_PCX] = 1;
    else if (tempstr == "cpx") ccxPktPrint[PP_CPX] = 1;
    else if (tempstr == "mem") ccxPktPrint[PP_MEM] = 1;
    else if (tempstr == "spc") ccxPktPrint[PP_SPC] = 1;
    else if (tempstr == "targets") ccxPktPrint[PP_TRG] = 1;
    else if (tempstr == "target") ccxPktPrint[PP_TRG] = 1;
    else ccxPktPrintMask = tempstr.atohex();
    ccxPktPrintOn = 1;
  }

  // MCU mem print
  if (mChkPlusarg(mcuMemPrint=)) {
    mGetPlusargStr(mcuMemPrint=,getstr);
    tempstr.bittostr (getstr);
    if (tempstr == "all") {
      mcuMemPrint[READ] = 1;
      mcuMemPrint[WRITE] = 1;
    }
    else if (tempstr == "rd" || tempstr == "read") mcuMemPrint[READ] = 1;
    else if (tempstr == "wr" || tempstr == "write") mcuMemPrint[WRITE] = 1;
    mcuMemPrintOn = 1;
  }

  if (mChkPlusarg(finish_mask=)) {
    mGetPlusargStr(finish_mask=,getstr);
    tempstr.bittostr (getstr);
    if (tempstr == "all") tmp = 64'hffffffffffffffff; // special case
    else tmp = tempstr.atohex();
    finishMask = tmp;
  } else if (mChkPlusarg(threads=)) {
    mGetPlusargStr(threads=,getstr);
    tempstr.bittostr (getstr);
    if (tempstr == "all") tmp = 64'hffffffffffffffff; // special case
    else tmp = tempstr.atohex();
    finishMask = tmp;
  } else finishMask = 1;
    

  // you probably don't want to add here, see task getCfg above.


}



// This task will try to resolve conflicts in paramaters
// PROVIDED that someone has thought of them.
task Params::check4conflict() {

  integer i;

  intr_en = intr_en & coreEnableReg;
  finishMask = finishMask & coreEnableReg & coreAvilableReg;

}