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Ok. How does it still work? testbench-imperas.sv the same as testbench.sv now.

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Rose Thompson 2024-05-17 16:08:14 -05:00
parent d9807bb909
commit e6902eb4d2
1 changed files with 421 additions and 198 deletions
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testbench/testbench-imperas.sv
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@ -240,6 +240,12 @@ module testbench;
`endif `endif
end // initial begin end // initial begin
// Model the testbench as an fsm.
// Do this in parts so it easier to verify
// part 1: build a version which echos the same behavior as the below code, but does not drive anything
// part 2: drive some of the controls
// part 3: drive all logic and remove old inital and always @ negedge clk block
typedef enum logic [3:0]{STATE_TESTBENCH_RESET, typedef enum logic [3:0]{STATE_TESTBENCH_RESET,
STATE_INIT_TEST, STATE_INIT_TEST,
STATE_RESET_MEMORIES, STATE_RESET_MEMORIES,
@ -260,33 +266,204 @@ module testbench;
logic ResetCntRst; logic ResetCntRst;
logic CopyRAM; logic CopyRAM;
string signame, bootmemfilename, uartoutfilename, pathname; string signame, elffilename, memfilename, bootmemfilename, uartoutfilename, pathname;
integer begin_signature_addr, end_signature_addr, signature_size; integer begin_signature_addr, end_signature_addr, signature_size;
integer uartoutfile; integer uartoutfile;
logic reset_extNew; logic reset_extNew;
logic DCacheFlushStartNew; logic DCacheFlushStartNew;
assign ResetThresholdNew = 3'd5;
initial begin
TestBenchReset = 1'b1;
# 100;
TestBenchReset = 1'b0;
end
always_ff @(posedge clk)
if (TestBenchReset) CurrState <= STATE_TESTBENCH_RESET;
else CurrState <= NextState;
// fsm next state logic
always_comb begin
// riscof tests have a different signature, tests[0] == "1" refers to RiscvArchTests
// and tests[0] == "2" refers to WallyRiscvArchTests
//pathname = tvpaths[tests[0].atoi()];
case(CurrState)
STATE_TESTBENCH_RESET: NextState = STATE_INIT_TEST;
STATE_INIT_TEST: NextState = STATE_RESET_MEMORIES;
STATE_RESET_MEMORIES: NextState = STATE_RESET_MEMORIES2;
STATE_RESET_MEMORIES2: NextState = STATE_LOAD_MEMORIES; // Give the reset enough time to ensure the bus is reset before loading the memories.
STATE_LOAD_MEMORIES: NextState = STATE_RESET_TEST;
STATE_RESET_TEST: if(ResetCountNew < ResetThresholdNew) NextState = STATE_RESET_TEST;
else NextState = STATE_RUN_TEST;
STATE_RUN_TEST: if(TestComplete) NextState = STATE_COPY_RAM;
else NextState = STATE_RUN_TEST;
STATE_COPY_RAM: NextState = STATE_CHECK_TEST;
STATE_CHECK_TEST: if (DCacheFlushDone) NextState = STATE_VALIDATE;
else NextState = STATE_CHECK_TEST_WAIT;
STATE_CHECK_TEST_WAIT: if(DCacheFlushDone) NextState = STATE_VALIDATE;
else NextState = STATE_CHECK_TEST_WAIT;
STATE_VALIDATE: NextState = STATE_INIT_TEST;
STATE_INCR_TEST: NextState = STATE_INIT_TEST;
default: NextState = STATE_TESTBENCH_RESET;
endcase
end // always_comb
// fsm output control logic
assign reset_ext = CurrState == STATE_TESTBENCH_RESET | CurrState == STATE_INIT_TEST |
CurrState == STATE_RESET_MEMORIES | CurrState == STATE_RESET_MEMORIES2 |
CurrState == STATE_LOAD_MEMORIES | CurrState ==STATE_RESET_TEST;
// this initialization is very expensive, only do it for coremark.
assign ResetMem = (CurrState == STATE_RESET_MEMORIES | CurrState == STATE_RESET_MEMORIES2);
assign LoadMem = CurrState == STATE_LOAD_MEMORIES;
assign ResetCntRst = CurrState == STATE_INIT_TEST;
assign ResetCntEn = CurrState == STATE_RESET_TEST;
assign Validate = CurrState == STATE_VALIDATE;
assign SelectTest = CurrState == STATE_INIT_TEST;
assign CopyRAM = TestComplete & CurrState == STATE_RUN_TEST;
assign DCacheFlushStartNew = CurrState == STATE_COPY_RAM;
// fsm reset counter
counter #(3) RstCounter(clk, ResetCntRst, ResetCntEn, ResetCountNew);
logic [P.XLEN-1:0] testadr, testadrNoBase; ////////////////////////////////////////////////////////////////////////////////
string InstrFName, InstrDName, InstrEName, InstrMName, InstrWName; // Find the test vector files and populate the PC to function label converter
logic [31:0] InstrW; ////////////////////////////////////////////////////////////////////////////////
logic [P.XLEN-1:0] testadr;
logic [P.XLEN-1:0] PCW;
logic [31:0] NextInstrE, InstrM;
string testName;
string memfilename, testDir, adrstr, elffilename;
logic InitializingMemories;
integer ResetCount, ResetThreshold;
logic InReset;
integer memFile;
integer readResult;
//VCS ignores the dynamic types while processing the implicit sensitivity lists of always @*, always_comb, and always_latch
//procedural blocks. VCS supports the dynamic types in the implicit sensitivity list of always @* block as specified in the Section 9.2 of the IEEE Standard SystemVerilog Specification 1800-2012.
//To support memory load and dump task verbosity: flag : -diag sys_task_mem
always @(*) begin
begin_signature_addr = ProgramAddrLabelArray["begin_signature"];
end_signature_addr = ProgramAddrLabelArray["sig_end_canary"];
signature_size = end_signature_addr - begin_signature_addr;
end
logic EcallFaultM;
if (P.ZICSR_SUPPORTED)
assign EcallFaultM = dut.core.priv.priv.EcallFaultM;
else
assign EcallFaultM = 0;
always @(posedge clk) begin
////////////////////////////////////////////////////////////////////////////////
// Verify the test ran correctly by checking the memory against a known signature.
////////////////////////////////////////////////////////////////////////////////
if(TestBenchReset) test = 1;
if (P.ZICSR_SUPPORTED & TEST == "coremark")
if (EcallFaultM) begin
$display("Benchmark: coremark is done.");
$stop;
end
if (P.ZICSR_SUPPORTED & dut.core.ifu.PCM == 0 & dut.core.ifu.InstrM == 0 & dut.core.ieu.InstrValidM) begin
$display("Program fetched illegal instruction 0x00000000 from address 0x00000000. Might be fault with no fault handler.");
//$stop; // presently wally32/64priv tests trigger this for reasons not yet understood.
end
// modifications 4/3/24 kunlin & harris to speed up Verilator
// For some reason, Verilator runs ~100x slower when these SelectTest and Validate codes are in the posedge clk block
//end // added
//always @(posedge SelectTest) // added
if(SelectTest) begin
if (riscofTest) begin
memfilename = {pathname, tests[test], "/ref/ref.elf.memfile"};
elffilename = {pathname, tests[test], "ref/ref.elf"};
ProgramAddrMapFile = {pathname, tests[test], "/ref/ref.elf.objdump.addr"};
ProgramLabelMapFile = {pathname, tests[test], "/ref/ref.elf.objdump.lab"};
end else if(TEST == "buildroot") begin
memfilename = {RISCV_DIR, "/linux-testvectors/ram.bin"};
elffilename = "buildroot";
bootmemfilename = {RISCV_DIR, "/linux-testvectors/bootmem.bin"};
uartoutfilename = {"logs/", TEST, "_uart.out"};
uartoutfile = $fopen(uartoutfilename, "w"); // delete UART output file
ProgramAddrMapFile = {RISCV_DIR, "/buildroot/output/images/disassembly/vmlinux.objdump.addr"};
ProgramLabelMapFile = {RISCV_DIR, "/buildroot/output/images/disassembly/vmlinux.objdump.lab"};
end else if(ElfFile != "none") begin
elffilename = ElfFile;
memfilename = {ElfFile, ".memfile"};
ProgramAddrMapFile = {ElfFile, ".objdump.addr"};
ProgramLabelMapFile = {ElfFile, ".objdump.lab"};
end else begin
elffilename = {pathname, tests[test], ".elf"};
memfilename = {pathname, tests[test], ".elf.memfile"};
ProgramAddrMapFile = {pathname, tests[test], ".elf.objdump.addr"};
ProgramLabelMapFile = {pathname, tests[test], ".elf.objdump.lab"};
end
// declare memory labels that interest us, the updateProgramAddrLabelArray task will find
// the addr of each label and fill the array. To expand, add more elements to this array
// and initialize them to zero (also initilaize them to zero at the start of the next test)
updateProgramAddrLabelArray(ProgramAddrMapFile, ProgramLabelMapFile, ProgramAddrLabelArray);
end
`ifdef VERILATOR // this macro is defined when verilator is used
// Simulator Verilator has an issue that the validate logic below slows runtime 110x if it is
// in the posedge clk block rather than a separate posedge Validate block.
// Until it is fixed, provide a silly posedge Validate block to keep Verilator happy.
// https://github.com/verilator/verilator/issues/4967
end // restored
always @(posedge Validate) // added
`endif
if(Validate) begin
if (TEST == "buildroot")
$fclose(uartoutfile);
if (TEST == "embench") begin
// Writes contents of begin_signature to .sim.output file
// this contains instret and cycles for start and end of test run, used by embench
// python speed script to calculate embench speed score.
// also, begin_signature contains the results of the self checking mechanism,
// which will be read by the python script for error checking
$display("Embench Benchmark: %s is done.", tests[test]);
if (riscofTest) outputfile = {pathname, tests[test], "/ref/ref.sim.output"};
else outputfile = {pathname, tests[test], ".sim.output"};
outputFilePointer = $fopen(outputfile, "w");
i = 0;
testadr = ($unsigned(begin_signature_addr))/(P.XLEN/8);
while ($unsigned(i) < $unsigned(5'd5)) begin
$fdisplayh(outputFilePointer, DCacheFlushFSM.ShadowRAM[testadr+i]);
i = i + 1;
end
$fclose(outputFilePointer);
$display("Embench Benchmark: created output file: %s", outputfile);
end else if (TEST == "coverage64gc") begin
$display("Coverage tests don't get checked");
end else if (ElfFile != "none") begin
$display("Single Elf file tests are not signatured verified.");
`ifdef VERILATOR // this macro is defined when verilator is used
$finish; // Simulator Verilator needs $finish to terminate simulation.
`elsif SIM_VCS // this macro is defined when vcs is used
$finish; // Simulator VCS needs $finish to terminate simulation.
`else
$stop; // if this is changed to $finish for Questa, wally-batch.do does not go to the next step to run coverage, and wally.do terminates without allowing GUI debug
`endif
end else begin
// for tests with no self checking mechanism, read .signature.output file and compare to check for errors
// clear signature to prevent contamination from previous tests
if (!begin_signature_addr)
$display("begin_signature addr not found in %s", ProgramLabelMapFile);
else if (TEST != "embench") begin // *** quick hack for embench. need a better long term solution
CheckSignature(pathname, tests[test], riscofTest, begin_signature_addr, errors);
if(errors > 0) totalerrors = totalerrors + 1;
end
end
test = test + 1; // *** this probably needs to be moved.
if (test == tests.size()) begin
if (totalerrors == 0) $display("SUCCESS! All tests ran without failures.");
else $display("FAIL: %d test programs had errors", totalerrors);
`ifdef VERILATOR // this macro is defined when verilator is used
$finish; // Simulator Verilator needs $finish to terminate simulation.
`elsif SIM_VCS // this macro is defined when vcs is used
$finish; // Simulator VCS needs $finish to terminate simulation.
`else
$stop; // if this is changed to $finish for Questa, wally-batch.do does not go to the next step to run coverage, and wally.do terminates without allowing GUI debug
`endif
end
end
`ifndef VERILATOR
// Remove this when issue 4967 is resolved and the posedge Validate logic above is removed
end
`endif
//////////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////////
// load memories with program image // load memories with program image
@ -297,6 +474,8 @@ module testbench;
integer StartIndex; integer StartIndex;
integer EndIndex; integer EndIndex;
integer BaseIndex; integer BaseIndex;
integer memFile;
integer readResult;
if (P.SDC_SUPPORTED) begin if (P.SDC_SUPPORTED) begin
always @(posedge clk) begin always @(posedge clk) begin
if (LoadMem) begin if (LoadMem) begin
@ -365,6 +544,155 @@ module testbench;
for (adrindex=0; adrindex<(P.UNCORE_RAM_RANGE>>1+(P.XLEN/32)); adrindex = adrindex+1) for (adrindex=0; adrindex<(P.UNCORE_RAM_RANGE>>1+(P.XLEN/32)); adrindex = adrindex+1)
dut.uncoregen.uncore.ram.ram.memory.RAM[adrindex] = '0; dut.uncoregen.uncore.ram.ram.memory.RAM[adrindex] = '0;
////////////////////////////////////////////////////////////////////////////////
// Actual hardware
////////////////////////////////////////////////////////////////////////////////
// instantiate device to be tested
assign GPIOIN = '0;
assign UARTSin = 1'b1;
assign SPIIn = 1'b0;
if(P.EXT_MEM_SUPPORTED) begin
ram_ahb #(.P(P), .BASE(P.EXT_MEM_BASE), .RANGE(P.EXT_MEM_RANGE))
ram (.HCLK, .HRESETn, .HADDR, .HWRITE, .HTRANS, .HWDATA, .HSELRam(HSELEXT),
.HREADRam(HRDATAEXT), .HREADYRam(HREADYEXT), .HRESPRam(HRESPEXT), .HREADY, .HWSTRB);
end else begin
assign HREADYEXT = 1'b1;
assign {HRESPEXT, HRDATAEXT} = '0;
end
if(P.SDC_SUPPORTED) begin : sdcard
// *** fix later
/* -----\/----- EXCLUDED -----\/-----
sdModel sdcard
(.sdClk(SDCCLK),
.cmd(SDCCmd),
.dat(SDCDat));
assign SDCCmd = SDCCmdOE ? SDCCmdOut : 1'bz;
assign SDCCmdIn = SDCCmd;
assign SDCDat = sd_dat_reg_t ? sd_dat_reg_o : sd_dat_i;
assign SDCDatIn = SDCDat;
-----/\----- EXCLUDED -----/\----- */
assign SDCIntr = 1'b0;
end else begin
assign SDCIntr = 1'b0;
end
wallypipelinedsoc #(P) dut(.clk, .reset_ext, .reset, .HRDATAEXT, .HREADYEXT, .HRESPEXT, .HSELEXT, .HSELEXTSDC,
.HCLK, .HRESETn, .HADDR, .HWDATA, .HWSTRB, .HWRITE, .HSIZE, .HBURST, .HPROT,
.HTRANS, .HMASTLOCK, .HREADY, .TIMECLK(1'b0), .GPIOIN, .GPIOOUT, .GPIOEN,
.UARTSin, .UARTSout, .SDCIntr, .SPIIn, .SPIOut, .SPICS);
// generate clock to sequence tests
always begin
clk = 1'b1; # 5; clk = 1'b0; # 5;
end
/*
// Print key info each cycle for debugging
always @(posedge clk) begin
#2;
$display("PCM: %x InstrM: %x (%5s) WriteDataM: %x IEUResultM: %x",
dut.core.PCM, dut.core.InstrM, InstrMName, dut.core.WriteDataM, dut.core.ieu.dp.IEUResultM);
end
*/
////////////////////////////////////////////////////////////////////////////////
// Support logic
////////////////////////////////////////////////////////////////////////////////
// Duplicate copy of pipeline registers that are optimized out of some configurations
logic [31:0] NextInstrE, InstrM;
mux2 #(32) FlushInstrMMux(dut.core.ifu.InstrE, dut.core.ifu.nop, dut.core.ifu.FlushM, NextInstrE);
flopenr #(32) InstrMReg(clk, reset, ~dut.core.ifu.StallM, NextInstrE, InstrM);
// Track names of instructions
string InstrFName, InstrDName, InstrEName, InstrMName, InstrWName;
logic [31:0] InstrW;
flopenr #(32) InstrWReg(clk, reset, ~dut.core.ieu.dp.StallW, InstrM, InstrW);
instrTrackerTB it(clk, reset, dut.core.ieu.dp.FlushE,
dut.core.ifu.InstrRawF[31:0],
dut.core.ifu.InstrD, dut.core.ifu.InstrE,
InstrM, InstrW,
InstrFName, InstrDName, InstrEName, InstrMName, InstrWName);
// watch for problems such as lockup, reading unitialized memory, bad configs
watchdog #(P.XLEN, 1000000) watchdog(.clk, .reset); // check if PCW is stuck
ramxdetector #(P.XLEN, P.LLEN) ramxdetector(clk, dut.core.lsu.MemRWM[1], dut.core.lsu.LSULoadAccessFaultM, dut.core.lsu.ReadDataM,
dut.core.ifu.PCM, InstrM, dut.core.lsu.IEUAdrM, InstrMName);
riscvassertions #(P) riscvassertions(); // check assertions for a legal configuration
loggers #(P, PrintHPMCounters, I_CACHE_ADDR_LOGGER, D_CACHE_ADDR_LOGGER, BPRED_LOGGER)
loggers (clk, reset, DCacheFlushStart, DCacheFlushDone, memfilename, TEST);
// track the current function or global label
if (DEBUG > 0 | ((PrintHPMCounters | BPRED_LOGGER) & P.ZICNTR_SUPPORTED)) begin : FunctionName
FunctionName #(P) FunctionName(.reset(reset_ext | TestBenchReset),
.clk(clk), .ProgramAddrMapFile(ProgramAddrMapFile), .ProgramLabelMapFile(ProgramLabelMapFile));
end
// Append UART output to file for tests
if (P.UART_SUPPORTED) begin: uart_logger
always @(posedge clk) begin
if (TEST == "buildroot") begin
if (~dut.uncoregen.uncore.uartgen.uart.MEMWb & dut.uncoregen.uncore.uartgen.uart.uartPC.A == 3'b000 & ~dut.uncoregen.uncore.uartgen.uart.uartPC.DLAB) begin
$fwrite(uartoutfile, "%c", dut.uncoregen.uncore.uartgen.uart.uartPC.Din); // append characters one at a time so we see a consistent log appearing during the run
$fflush(uartoutfile);
end
end
end
end
// Termination condition
// terminate on a specific ECALL after li x3,1 for old Imperas tests, *** remove this when old imperas tests are removed
// or sw gp,-56(t0) for new Imperas tests
// or sd gp, -56(t0)
// or on a jump to self infinite loop (6f) for RISC-V Arch tests
logic ecf; // remove this once we don't rely on old Imperas tests with Ecalls
if (P.ZICSR_SUPPORTED) assign ecf = dut.core.priv.priv.EcallFaultM;
else assign ecf = 0;
always_comb begin
TestComplete = ecf &
(dut.core.ieu.dp.regf.rf[3] == 1 |
(dut.core.ieu.dp.regf.we3 &
dut.core.ieu.dp.regf.a3 == 3 &
dut.core.ieu.dp.regf.wd3 == 1)) |
((InstrM == 32'h6f | InstrM == 32'hfc32a423 | InstrM == 32'hfc32a823) & dut.core.ieu.c.InstrValidM ) |
((dut.core.lsu.IEUAdrM == ProgramAddrLabelArray["tohost"] & dut.core.lsu.IEUAdrM != 0) & InstrMName == "SW" );
end
DCacheFlushFSM #(P) DCacheFlushFSM(.clk, .start(DCacheFlushStart), .done(DCacheFlushDone));
if(P.ZICSR_SUPPORTED) begin
logic [P.XLEN-1:0] Minstret;
assign Minstret = testbench.dut.core.priv.priv.csr.counters.counters.HPMCOUNTER_REGW[2];
always @(negedge clk) begin
if (INSTR_LIMIT > 0) begin
if((Minstret != 0) && (Minstret % 'd100000 == 0)) $display("Reached %d instructions", Minstret);
if((Minstret == INSTR_LIMIT) & (INSTR_LIMIT!=0)) begin $finish; end
end
end
end
logic [P.XLEN-1:0] testadrNoBase;
string testName;
string testDir, adrstr;
logic InitializingMemories;
integer ResetCount, ResetThreshold;
logic InReset;
// Imperas look here. // Imperas look here.
initial initial
begin begin
@ -394,67 +722,8 @@ module testbench;
end end
// Model the testbench as an fsm.
// Do this in parts so it easier to verify
// part 1: build a version which echos the same behavior as the below code, but does not drive anything
// part 2: drive some of the controls
// part 3: drive all logic and remove old inital and always @ negedge clk block
assign ResetThresholdNew = 3'd5;
initial begin
TestBenchReset = 1'b1;
# 100;
TestBenchReset = 1'b0;
end
always_ff @(posedge clk)
if (TestBenchReset) CurrState <= STATE_TESTBENCH_RESET;
else CurrState <= NextState;
// fsm next state logic
always_comb begin
// riscof tests have a different signature, tests[0] == "1" refers to RiscvArchTests
// and tests[0] == "2" refers to WallyRiscvArchTests
//pathname = tvpaths[tests[0].atoi()];
case(CurrState)
STATE_TESTBENCH_RESET: NextState = STATE_INIT_TEST;
STATE_INIT_TEST: NextState = STATE_RESET_MEMORIES;
STATE_RESET_MEMORIES: NextState = STATE_RESET_MEMORIES2;
STATE_RESET_MEMORIES2: NextState = STATE_LOAD_MEMORIES; // Give the reset enough time to ensure the bus is reset before loading the memories.
STATE_LOAD_MEMORIES: NextState = STATE_RESET_TEST;
STATE_RESET_TEST: if(ResetCountNew < ResetThresholdNew) NextState = STATE_RESET_TEST;
else NextState = STATE_RUN_TEST;
STATE_RUN_TEST: if(TestComplete) NextState = STATE_COPY_RAM;
else NextState = STATE_RUN_TEST;
STATE_COPY_RAM: NextState = STATE_CHECK_TEST;
STATE_CHECK_TEST: if (DCacheFlushDone) NextState = STATE_VALIDATE;
else NextState = STATE_CHECK_TEST_WAIT;
STATE_CHECK_TEST_WAIT: if(DCacheFlushDone) NextState = STATE_VALIDATE;
else NextState = STATE_CHECK_TEST_WAIT;
STATE_VALIDATE: NextState = STATE_INIT_TEST;
STATE_INCR_TEST: NextState = STATE_INIT_TEST;
default: NextState = STATE_TESTBENCH_RESET;
endcase
end // always_comb
// fsm output control logic
assign reset_extNew = CurrState == STATE_TESTBENCH_RESET | CurrState == STATE_INIT_TEST |
CurrState == STATE_RESET_MEMORIES | CurrState == STATE_RESET_MEMORIES2 |
CurrState == STATE_LOAD_MEMORIES | CurrState ==STATE_RESET_TEST;
// this initialization is very expensive, only do it for coremark.
assign ResetMem = (CurrState == STATE_RESET_MEMORIES | CurrState == STATE_RESET_MEMORIES2);
assign LoadMem = CurrState == STATE_LOAD_MEMORIES;
assign ResetCntRst = CurrState == STATE_INIT_TEST;
assign ResetCntEn = CurrState == STATE_RESET_TEST;
assign Validate = CurrState == STATE_VALIDATE;
assign SelectTest = CurrState == STATE_INIT_TEST;
assign CopyRAM = TestComplete & CurrState == STATE_RUN_TEST;
assign DCacheFlushStartNew = CurrState == STATE_COPY_RAM;
// fsm reset counter
counter #(3) RstCounter(clk, ResetCntRst, ResetCntEn, ResetCountNew);
`ifdef USE_IMPERAS_DV `ifdef USE_IMPERAS_DV
@ -615,134 +884,88 @@ module testbench;
`endif `endif
flopenr #(P.XLEN) PCWReg(clk, reset, ~dut.core.ieu.dp.StallW, dut.core.ifu.PCM, PCW); task automatic CheckSignature;
flopenr #(32) InstrWReg(clk, reset, ~dut.core.ieu.dp.StallW, InstrM, InstrW); // This task must be declared inside this module as it needs access to parameter P. There is
// no way to pass P to the task unless we convert it to a module.
input string pathname;
input string TestName;
input logic riscofTest;
input integer begin_signature_addr;
output integer errors;
int fd, code;
string line;
int siglines, sigentries;
// check assertions for a legal configuration localparam SIGNATURESIZE = 5000000;
riscvassertions #(P) riscvassertions(); integer i;
logic [31:0] sig32[0:SIGNATURESIZE];
logic [31:0] parsed;
logic [P.XLEN-1:0] signature[0:SIGNATURESIZE];
string signame;
logic [P.XLEN-1:0] testadr, testadrNoBase;
//$display("Invoking CheckSignature %s %s %0t", pathname, TestName, $time);
// read .signature.output file and compare to check for errors
if (riscofTest) signame = {pathname, TestName, "/ref/Reference-sail_c_simulator.signature"};
else signame = {pathname, TestName, ".signature.output"};
// instantiate device to be tested // read signature file from memory and count lines. Can't use readmemh because we need the line count
assign GPIOIN = 0; // $readmemh(signame, sig32);
assign UARTSin = 1; fd = $fopen(signame, "r");
siglines = 0;
if(P.EXT_MEM_SUPPORTED) begin if (fd == 0) $display("Unable to read %s", signame);
ram_ahb #(.BASE(P.EXT_MEM_BASE), .RANGE(P.EXT_MEM_RANGE)) else begin
ram (.HCLK, .HRESETn, .HADDR, .HWRITE, .HTRANS, .HWDATA, .HSELRam(HSELEXT), while (!$feof(fd)) begin
.HREADRam(HRDATAEXT), .HREADYRam(HREADYEXT), .HRESPRam(HRESPEXT), .HREADY, code = $fgets(line, fd);
.HWSTRB); if (code != 0) begin
end else begin int errno;
assign HREADYEXT = 1; string errstr;
assign HRESPEXT = 0; errno = $ferror(fd, errstr);
assign HRDATAEXT = 0; if (errno != 0) $display("Error %d (code %d) reading line %d of %s: %s", errno, code, siglines, signame, errstr);
end if (line.len() > 1) begin // skip blank lines
if ($sscanf(line, "%x", parsed) != 0) begin
if(P.SDC_SUPPORTED) begin : sdcard sig32[siglines] = parsed;
// *** fix later siglines = siglines + 1; // increment if line is not blank
/* -----\/----- EXCLUDED -----\/----- end
sdModel sdcard end
(.sdClk(SDCCLK),
.cmd(SDCCmd),
.dat(SDCDat));
assign SDCCmd = SDCCmdOE ? SDCCmdOut : 1'bz;
assign SDCCmdIn = SDCCmd;
assign SDCDatIn = SDCDat;
-----/\----- EXCLUDED -----/\----- */
assign SDCIntr = 0;
end else begin
assign SDCIntr = 0;
end
wallypipelinedsoc #(P) dut(.clk, .reset_ext, .reset, .HRDATAEXT, .HREADYEXT, .HRESPEXT, .HSELEXT, .HSELEXTSDC,
.HCLK, .HRESETn, .HADDR, .HWDATA, .HWSTRB, .HWRITE, .HSIZE, .HBURST, .HPROT,
.HTRANS, .HMASTLOCK, .HREADY, .TIMECLK(1'b0), .GPIOIN, .GPIOOUT, .GPIOEN,
.UARTSin, .UARTSout, .SDCIntr, .SPICS, .SPIOut, .SPIIn);
// Track names of instructions
instrTrackerTB it(clk, reset, dut.core.ieu.dp.FlushE,
dut.core.ifu.InstrRawF[31:0],
dut.core.ifu.InstrD, dut.core.ifu.InstrE,
InstrM, InstrW,
InstrFName, InstrDName, InstrEName, InstrMName, InstrWName);
// initialize tests
// generate clock to sequence tests
always
begin
clk = 1; # 5; clk = 0; # 5;
// if ($time % 100000 == 0) $display("Time is %0t", $time);
end
// check results
assign reset_ext = InReset;
always @(negedge clk)
begin
InitializingMemories = 0;
if(InReset == 1) begin
// once the test inidicates it's done we need to immediately hold reset for a number of cycles.
if(ResetCount < ResetThreshold) ResetCount = ResetCount + 1;
else begin // hit reset threshold so we remove reset.
InReset = 0;
ResetCount = 0;
end
end
end // always @ (negedge clk)
// track the current function or global label
if (DEBUG == 1) begin : FunctionName
FunctionName #(P) FunctionName(.reset(reset),
.clk(clk),
.ProgramAddrMapFile(ProgramAddrMapFile),
.ProgramLabelMapFile(ProgramLabelMapFile));
end
// Duplicate copy of pipeline registers that are optimized out of some configurations
mux2 #(32) FlushInstrMMux(dut.core.ifu.InstrE, dut.core.ifu.nop, dut.core.ifu.FlushM, NextInstrE);
flopenr #(32) InstrMReg(clk, reset, ~dut.core.ifu.StallM, NextInstrE, InstrM);
// Termination condition
// terminate on a specific ECALL after li x3,1 for old Imperas tests, *** remove this when old imperas tests are removed
// or sw gp,-56(t0) for new Imperas tests
// or sd gp, -56(t0)
// or on a jump to self infinite loop (6f) for RISC-V Arch tests
logic ecf; // remove this once we don't rely on old Imperas tests with Ecalls
if (P.ZICSR_SUPPORTED) assign ecf = dut.core.priv.priv.EcallFaultM;
else assign ecf = 0;
assign DCacheFlushStart = ecf &
(dut.core.ieu.dp.regf.rf[3] == 1 |
(dut.core.ieu.dp.regf.we3 &
dut.core.ieu.dp.regf.a3 == 3 &
dut.core.ieu.dp.regf.wd3 == 1)) |
((InstrM == 32'h6f | InstrM == 32'hfc32a423 | InstrM == 32'hfc32a823) & dut.core.ieu.c.InstrValidM ) |
((dut.core.lsu.IEUAdrM == ProgramAddrLabelArray["tohost"]) & InstrMName == "SW" );
DCacheFlushFSM #(P) DCacheFlushFSM(.clk(clk),
.start(DCacheFlushStart),
.done(DCacheFlushDone));
// initialize the branch predictor
if (P.BPRED_SUPPORTED == 1)
begin
genvar adrindex;
// Initializing all zeroes into the branch predictor memory.
for(adrindex = 0; adrindex < 1024; adrindex++) begin
initial begin
force dut.core.ifu.bpred.bpred.Predictor.DirPredictor.PHT.mem[adrindex] = 0;
force dut.core.ifu.bpred.bpred.TargetPredictor.memory.mem[adrindex] = 0;
#1;
release dut.core.ifu.bpred.bpred.Predictor.DirPredictor.PHT.mem[adrindex];
release dut.core.ifu.bpred.bpred.TargetPredictor.memory.mem[adrindex];
end end
end end
$fclose(fd);
end end
watchdog #(P.XLEN, 1000000) watchdog(.clk, .reset); // check if PCW is stuck // Check valid number of lines were read
if (siglines == 0) begin
errors = 1;
$display("Error: empty test file %s", signame);
end else if (P.XLEN == 64 & (siglines % 2)) begin
errors = 1;
$display("Error: RV64 signature has odd number of lines %s", signame);
end else errors = 0;
// copy lines into signature, converting to XLEN if necessary
sigentries = (P.XLEN == 32) ? siglines : siglines/2; // number of signature entries
for (i=0; i<sigentries; i++) begin
signature[i] = (P.XLEN == 32) ? sig32[i] : {sig32[i*2+1], sig32[i*2]};
//$display("XLEN = %d signature[%d] = %x", P.XLEN, i, signature[i]);
end
// Check errors
testadr = ($unsigned(begin_signature_addr))/(P.XLEN/8);
testadrNoBase = (begin_signature_addr - P.UNCORE_RAM_BASE)/(P.XLEN/8);
for (i=0; i<sigentries; i++) begin
if (signature[i] !== testbench.DCacheFlushFSM.ShadowRAM[testadr+i]) begin
errors = errors+1;
$display(" Error on test %s result %d: adr = %h sim (D$) %h signature = %h",
TestName, i, (testadr+i)*(P.XLEN/8), testbench.DCacheFlushFSM.ShadowRAM[testadr+i], signature[i]);
$stop; // if this is changed to $finish, wally-batch.do does not get to the next step to run coverage
end
end
if (errors) $display("%s failed with %d errors. :(", TestName, errors);
else $display("%s succeeded. Brilliant!!!", TestName);
endtask
endmodule endmodule