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438 lines
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C++

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// simple verilator top
// uses a2owb with WB interface
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#define TRACING
// old public access method
//#define OLD_PUBLIC
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#include <cstddef>
#include <iostream>
#include <fstream>
#include <iomanip>
#include <unordered_map>
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#include "verilated.h"
#include "Va2owb.h"
#ifndef OLD_PUBLIC
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// internal nets
#include "Va2owb___024root.h"
#endif
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#include "Va2owb_a2owb.h"
#include "Va2owb_a2l2wb.h"
#include "Va2owb_c.h"
#include "Va2owb_iuq.h"
#include "Va2owb_iuq_cpl_top.h"
#include "Va2owb_iuq_cpl.h"
//#include "Va2owb_iuq_cpl_ctrl.h" // getting rid of public sim.a2o.root.iuq0.iuq_cpl_top0.iuq_cpl0.iuq_cpl_ctrl.cp3_nia_q fixed sim probs?#??!?~@?
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#ifdef TRACING
#include "verilated_vcd_c.h"
VerilatedVcdC *t;
#else
unsigned int t = 0;
#endif
/*
#include "uart/uartsim.h"
*/
Va2owb* m;
#ifdef OLD_PUBLIC
Va2owb* root;
#else
Va2owb___024root* root;
#endif
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vluint64_t main_time = 0; // in units of timeprecision used in verilog or --timescale-override
double sc_time_stamp() { // $time in verilog
return main_time;
}
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const char* tbName = "tb_litex";
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const int resetCycle = 10;
const int threadRunCycle = resetCycle + 5;
const int runCycles = 15000;
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const int hbCycles = 500;
const int quiesceCycles = 50;
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const int threads = 1;
const std::string testFile = "../mem/test3/rom.init";
const unsigned int bootAdr = 0x00000000;
const bool failMaxCycles = true;
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const unsigned int stopOnHang = 200;
const unsigned int stopOnLoop = 10;
const unsigned long iarPass = 0x7F0;
const unsigned long iarFail = 0x7F4;
const bool debugWB = false;
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// Cythonize this and use it for cocotb too...
class Memory {
std::unordered_map<unsigned int, unsigned int> mem;
public:
bool le;
bool logStores;
int defaultVal;
Memory();
void loadFile(std::string filename, unsigned int adr=0, bool le=false, std::string format="ascii");
int read(unsigned int adr);
void write(unsigned int adr, unsigned int dat);
void write(unsigned int adr, unsigned int be, unsigned int dat);
};
Memory::Memory() {
this->defaultVal = 0;
this->le = false;
this->logStores = true;
}
void Memory::loadFile(std::string filename, unsigned int adr, bool le, std::string format) {
unsigned int dat;
std::ifstream f;
f.open(filename, std::fstream::in);
// "ascii"
//while (f.peek()!=EOF) {
//f >> std::hex >> dat;
// f >> dat;
while (f >> std::hex >> dat) {
this->write(adr, dat);
adr += 4;
}
}
// adr is word-aligned byte address
int Memory::read(unsigned int adr) {
if (this->mem.find(adr) != this->mem.end()) {
return this->mem[adr];
} else {
return this->defaultVal;
}
}
// adr is word-aligned byte address
void Memory::write(unsigned int adr, unsigned int dat) {
unsigned int startDat = this->read(adr);
this->write(adr, 0xF, dat);
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}
void Memory::write(unsigned int adr, unsigned int be, unsigned int dat) {
if (be == 0) return;
int mask = 0, startDat;
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if (be >= 8) {
be = be - 8;
mask = 0xFF000000;
} else {
mask = 0;
}
if (be >= 4) {
be = be - 4;
mask |= 0x00FF0000;
}
if (be >= 2) {
be = be - 2;
mask |= 0x0000FF00;
}
if (be = 1) {
mask |= 0x000000FF;
}
startDat = this->read(adr);
this->mem[adr] = (startDat & ~mask) | (dat & mask);
if (this->logStores) {
std::cout << " * Mem Update @" << std::setw(8) << std::setfill('0') << std::uppercase << std::hex << adr <<
" " <<std::setw(8) << std::setfill('0') << std::uppercase << std::hex << startDat <<
"->" <<std::setw(8) << std::setfill('0') << std::uppercase << std::hex << this->read(adr) << std::endl;
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}
}
Memory mem;
int main(int argc, char **argv) {
using namespace std;
cout << setfill('0');
Verilated::commandArgs(argc, argv);
m = new Va2owb;
#ifdef OLD_PUBLIC
root = m;
#else
root = m->rootp;
#endif
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#ifdef TRACING
Verilated::traceEverOn(true);
t = new VerilatedVcdC;
m->trace(t, 99);
t->open("a2olitex.vcd");
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cout << "Tracing enabled." << endl;
#endif
bool ok = true;
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bool done = false;
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bool resetDone = false;
bool booted = false;
unsigned int quiesceCount = 0;
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unsigned int threadStop = 0x3;
unsigned int tick = 0;
unsigned int cycle = 1;
unsigned int readPending = 0;
unsigned int readAddr = 0;
unsigned int readTag = 0;
unsigned int readTID = 0;
unsigned int countReads = 0;
unsigned int lastCompCycle = 0;
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unsigned int lastCompSame = 0;
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bool wbRdPending = false, wbWrPending = false;
//unsigned int wbSel, wbDatW;
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unsigned int iu0Comp, iu1Comp, iu0CompLast, iu1CompLast;
unsigned long iu0CompIFAR, iu1CompIFAR, iu0CompIFARLast, iu1CompIFARLast, iuCompFlushIFAR;
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/*
# GPR pool and arch map
gprCompMap = []
lastGprCompMap = []
#wtf check what 33:36 are!
for i in range(36):
gprCompMap.append(sim.a2o.root.iuq0.iuq_slice_top0.slice0.rn_top0.fx_rn0.gpr_rn_map.xhdl3.comp_map0[i].comp_map_latch.dout)
lastGprCompMap.append(i)
gpr = []
for i in range(144):
gpr.append(sim.a2o.root.xu0.gpr.gpr0.loc[i].dat)
# CR fields pool and arch map
crCompMap = []
lastCrCompMap = []
for i in range(8):
crCompMap.append(sim.a2o.root.iuq0.iuq_slice_top0.slice0.rn_top0.fx_rn0.cr_rn_map.xhdl3.comp_map0[i].comp_map_latch.dout)
lastCrCompMap.append(i)
cr = []
for i in range(24):
cr.append(sim.a2o.root.xu0.cr.entry[i].reg_latch.dout)
# XER pool and arch map
xerCompMap = []
lastXerCompMap = []
for i in range(1):
xerCompMap.append(sim.a2o.root.iuq0.iuq_slice_top0.slice0.rn_top0.fx_rn0.xer_rn_map.xhdl3.comp_map0[i].comp_map_latch.dout)
lastXerCompMap.append(i)
xer = []
for i in range(12):
xer.append(sim.a2o.root.xu0.xer.entry[i].reg_latch.dout)
# CTR pool and arch map
ctrCompMap = []
lastCtrCompMap = []
for i in range(1):
ctrCompMap.append(sim.a2o.root.iuq0.iuq_slice_top0.slice0.rn_top0.fx_rn0.ctr_rn_map.xhdl3.comp_map0[i].comp_map_latch.dout)
lastCtrCompMap.append(i)
ctr = []
for i in range(8):
ctr.append(sim.a2o.root.xu0.ctr.entry[i].reg_latch.dout)
# LR pool and arch map
lrCompMap = []
lastLrCompMap = []
for i in range(1):
lrCompMap.append(sim.a2o.root.iuq0.iuq_slice_top0.slice0.rn_top0.fx_rn0.lr_rn_map.xhdl3.comp_map0[i].comp_map_latch.dout)
lastLrCompMap.append(i)
lr = []
for i in range(8):
lr.append(sim.a2o.root.xu0.lr.entry[i].reg_latch.dout)
*/
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mem.write(0xFFFFFFFC, 0x48000002);
mem.loadFile(testFile);
m->rst = 1;
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cout << dec << setw(8) << cycle << " Resetting..." << endl;
//m->an_ac_pm_thread_stop = threadStop;
//cout << dec << setw(8) << cycle << " Thread stop=" << threadStop << endl;
//const int clocks[4] = {0x3, 0x2, 0x1, 0x0}; // 1x, 2x
//const int ticks1x = 4;
// all clk2x and clk4x fpga arrays overridden
const int clocks[2] = {0x1, 0x0}; // 1x
const int ticks1x = 2;
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while (!Verilated::gotFinish() && (ok | quiesceCount > 0) && cycle <= runCycles && !done) {
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if (!resetDone && (cycle > resetCycle)) {
m->rst = 0;
cout << dec << setw(8) << cycle << " Releasing reset." << endl;
resetDone = true;
}
if (threadStop && (cycle > threadRunCycle)) {
//threadStop = 0x0;
//m->an_ac_pm_thread_stop = threadStop;
//cout << dec << setw(8) << cycle << " Thread stop=" << threadStop << endl;
}
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m->clk = clocks[tick % ticks1x];
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m->eval();
// 1x clock
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if ((tick % ticks1x) == 0) {
// core
iu0Comp = root->a2owb->c0->iuq0->iuq_cpl_top0->iuq_cpl0->cp2_i0_completed;
iu1Comp = root->a2owb->c0->iuq0->iuq_cpl_top0->iuq_cpl0->cp2_i1_completed;
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iu0CompIFAR = root->a2owb->c0->iuq0->iuq_cpl_top0->iuq_cpl0->cp2_i0_ifar << 2;
iu1CompIFAR = root->a2owb->c0->iuq0->iuq_cpl_top0->iuq_cpl0->cp2_i1_ifar << 2;
iuCompFlushIFAR = root->a2owb->c0->cp_t0_flush_ifar << 2;
if (iu0Comp || iu1Comp) {
cout << dec << setw(8) << setfill('0') << uppercase << cycle << " C0: CP";
if (iu0Comp)
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cout << " 0:" << setw(6) << setfill('0') << hex << (iu0CompIFAR);
if (iu1Comp)
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cout << " 1:" << setw(6) << setfill('0') << hex << (iu1CompIFAR);
cout << " " << setw(16) << setfill('0') << hex << (iuCompFlushIFAR);
cout << endl;
lastCompCycle = cycle;
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if (quiesceCount > 0) {
// skip remaining checks
} else if ((iu0Comp && (iu0CompIFAR == iarPass)) || (iu1Comp && (iu1CompIFAR == iarPass))) {
cout << "*** Passing IAR detected ***" << endl;
quiesceCount = 5;
} else if ((iu0Comp && (iu0CompIFAR == iarFail)) || (iu1Comp && (iu1CompIFAR == iarFail))) {
cout << "*** Failing IAR detected ***" << endl;
ok = false;
quiesceCount = 5;
} else if ((iu0Comp == iu0CompLast) && (!iu0Comp || (iu0CompIFAR == iu0CompIFARLast)) &&
(iu1Comp == iu1CompLast) && (!iu1Comp || (iu1CompIFAR == iu1CompIFARLast))) {
lastCompSame++;
if (stopOnLoop && (lastCompSame == stopOnLoop)) {
ok = false;
cout << "*** Loop detected for " << dec << stopOnLoop << " iterations ***" << endl;
}
} else {
iu0CompLast = iu0Comp;
iu0CompIFARLast = iu0CompIFAR;
iu1CompLast = iu1Comp;
iu1CompIFARLast = iu1CompIFAR;
lastCompSame = 0;
}
} else if (!quiesceCount && (stopOnHang != 0) && (cycle - lastCompCycle > stopOnHang)) {
ok = false;
cout << "*** No completion detected in " << dec << stopOnHang << " cycles ***" << endl;
}
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// wb
m->wb_ack = 0;
if (wbRdPending) {
m->wb_datr = mem.read(m->wb_adr & 0xFFFFFFFC);
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m->wb_ack = 1;
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if (debugWB)
cout << dec << setw(8) << setfill('0') << uppercase << cycle << " WB RD ACK RA=" << setw(8) << hex << setfill('0') << (m->wb_adr & 0xFFFFFFFC) <<
" DATA=" << setw(8) << hex << setfill('0') << m->wb_datr << endl;
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wbRdPending = false;
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} else if (wbWrPending) {
mem.write(m->wb_adr, m->wb_sel, m->wb_datw);
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m->wb_ack = 1;
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if (debugWB)
cout << dec << setw(8) << setfill('0') << uppercase << cycle << " WB WR ACK RA=" << setw(8) << hex << setfill('0') << (m->wb_adr & 0xFFFFFFFC) <<
" SEL=" << setw(1) << setfill('0') << uppercase << hex << (unsigned int)m->wb_sel <<
" DATA=" << setw(8) << hex << setfill('0') << m->wb_datw << endl;
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wbWrPending = false;
} else if (m->wb_cyc && m->wb_stb) {
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if (!m->wb_we) {
//cout << dec << setw(8) << setfill('0') << uppercase << cycle << " WB RD RA=" << setw(8) << hex << setfill('0') << m->wb_adr << endl;
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wbRdPending = true;
/* only for debug - completions should be checked for loops, hangs, boot re-execute
if (m->wb_adr == bootAdr) {
if (booted) {
cout << "*** Fetch to boot address (" << dec << setw(8) << bootAdr << ") after initial boot ***" << endl;
ok = false;
} else {
booted = true;
}
}
*/
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} else {
//cout << dec << setw(8) << setfill('0') << uppercase << cycle << " WB WR RA=" << setw(8) << hex << setfill('0') << m->wb_adr <<
// " SEL=" << m->wb_sel << " DATA=" << setw(8) << hex << setfill('0') << m->wb_datw << endl;
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wbWrPending = true;
}
}
}
m->eval(); // NEED THIS!!!!
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// finish clock stuff
if ((tick % ticks1x) == 0) {
cycle++;
if ((cycle % hbCycles) == 0) {
cout << dec << setw(8) << setfill('0') << cycle << " ...tick..." << endl;
}
if (failMaxCycles && (cycle == runCycles)) {
cout << "*** Max cycles reached ***" << endl;
ok = false;
}
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}
tick++;
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#ifdef TRACING
t->dump(tick);
t->flush();
#endif
// check for fails
if (!ok && quiesceCount == 0) {
quiesceCount = quiesceCycles;
cout << "Quiescing..." << endl;
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} else if (quiesceCount > 0) {
quiesceCount--;
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if (ok && quiesceCount == 0) {
done = true;
}
}
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}
#ifdef TRACING
t->close();
#endif
m->final();
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cout << endl << endl << tbName << endl;
cout << endl << "Cycles run=" << dec << cycle << endl << endl;
if (!ok) {
cout << "You are worthless and weak." << endl;
exit(EXIT_FAILURE);
} else {
cout << "You has opulence." << endl;
exit(EXIT_SUCCESS);
}
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}