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more testbench improvements.

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This commit is contained in:
Ross Thompson 2023-06-14 12:23:26 -05:00
parent 8caa4dfcfb
commit 7fb58f5cac
1 changed files with 24 additions and 63 deletions
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87
testbench/testbench.sv
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@ -49,6 +49,9 @@ module testbench;
int test, i, errors, totalerrors; int test, i, errors, totalerrors;
string InstrFName, InstrDName, InstrEName, InstrMName, InstrWName; string InstrFName, InstrDName, InstrEName, InstrMName, InstrWName;
string outputfile;
integer outputFilePointer;
logic [31:0] InstrW; logic [31:0] InstrW;
string tests[]; string tests[];
@ -219,30 +222,12 @@ module testbench;
NextState = STATE_RESET_MEMORIES; NextState = STATE_RESET_MEMORIES;
ResetCntRst = 1; ResetCntRst = 1;
SelectTest = 1; SelectTest = 1;
// 4 major steps: select test, reset wally, reset memories, and load memories
// 1: test selection
// fill memory with defined values to reduce Xs in simulation
// Quick note the memory will need to be initialized. The C library does not
// guarantee the initialized reads. For example a strcmp can read 6 byte
// strings, but uses a load double to read them in. If the last 2 bytes are
// not initialized the compare results in an 'x' which propagates through
// the design.
// read test vectors into memory
/* if (tests[0] == `IMPERASTEST)
pathname = tvpaths[0];
else pathname = tvpaths[1]; */
// 2: reset wally
reset_ext = 1; reset_ext = 1;
end end
STATE_RESET_MEMORIES: begin STATE_RESET_MEMORIES: begin
NextState = STATE_RESET_MEMORIES2; NextState = STATE_RESET_MEMORIES2;
reset_ext = 1; reset_ext = 1;
// this initialization is very expensive, only do it for coremark. if (TEST == "coremark") ResetMem = 1; // this initialization is very expensive, only do it for coremark.
if (TEST == "coremark") ResetMem = 1;
end end
STATE_RESET_MEMORIES2: begin // Give the reset enough time to ensure the bus is reset before loading the memories. STATE_RESET_MEMORIES2: begin // Give the reset enough time to ensure the bus is reset before loading the memories.
NextState = STATE_LOAD_MEMORIES; NextState = STATE_LOAD_MEMORIES;
@ -307,7 +292,6 @@ module testbench;
ProgramAddrMapFile = {pathname, tests[test], ".elf.objdump.addr"}; ProgramAddrMapFile = {pathname, tests[test], ".elf.objdump.addr"};
ProgramLabelMapFile = {pathname, tests[test], ".elf.objdump.lab"}; ProgramLabelMapFile = {pathname, tests[test], ".elf.objdump.lab"};
end end
// declare memory labels that interest us, the updateProgramAddrLabelArray task will find // 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 // 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) // and initialize them to zero (also initilaize them to zero at the start of the next test)
@ -323,6 +307,26 @@ module testbench;
$display("Benchmark: coremark is done."); $display("Benchmark: coremark is done.");
$stop; $stop;
end end
else 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;
$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 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
end
if (!begin_signature_addr) if (!begin_signature_addr)
$display("begin_signature addr not found in %s", ProgramLabelMapFile); $display("begin_signature addr not found in %s", ProgramLabelMapFile);
else begin else begin
@ -401,7 +405,6 @@ module testbench;
logic HREADY; logic HREADY;
logic HSELEXT; logic HSELEXT;
logic InReset;
logic BeginSample; logic BeginSample;
// instantiate device to be tested // instantiate device to be tested
@ -453,48 +456,6 @@ module testbench;
// if ($time % 100000 == 0) $display("Time is %0t", $time); // if ($time % 100000 == 0) $display("Time is %0t", $time);
end end
// check results
// *** Probably need to take some of this code about embench and transfer to new fsm.
/* -----\/----- EXCLUDED -----\/-----
always @(negedge clk)
begin
if(InReset == 1) begin
end else begin
// Termination condition (i.e. we finished running current test)
if (DCacheFlushDone) begin
InReset = 1;
//begin_signature_addr = ProgramAddrLabelArray["begin_signature"];
if (!begin_signature_addr)
$display("begin_signature addr not found in %s", ProgramLabelMapFile);
testadr = ($unsigned(begin_signature_addr))/(P.XLEN/8);
testadrNoBase = (begin_signature_addr - P.UNCORE_RAM_BASE)/(P.XLEN/8);
#600; // give time for instructions in pipeline to finish
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;
$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 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
end
end // if (DCacheFlushDone)
end
end // always @ (negedge clk)
-----/\----- EXCLUDED -----/\----- */
if(PrintHPMCounters & P.ZICOUNTERS_SUPPORTED) begin : HPMCSample if(PrintHPMCounters & P.ZICOUNTERS_SUPPORTED) begin : HPMCSample
integer HPMCindex; integer HPMCindex;
logic StartSampleFirst; logic StartSampleFirst;