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Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main

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This commit is contained in:
kipmacsaigoren 2021-10-04 12:28:03 -05:00
commit b72e94badf
35 changed files with 643 additions and 480 deletions
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4
wally-pipelined/config/buildroot/wally-config.vh
View File

@ -66,6 +66,10 @@
`define ICACHE_WAYSIZEINBYTES 4096
`define ICACHE_BLOCKLENINBITS 256
// Integer Divider Configuration
// DIV_BITSPERCYCLE must be 1, 2, or 4
`define DIV_BITSPERCYCLE 4
// Legal number of PMP entries are 0, 16, or 64
`define PMP_ENTRIES 16

4
wally-pipelined/config/busybear/wally-config.vh
View File

@ -66,6 +66,10 @@
`define ICACHE_WAYSIZEINBYTES 4096
`define ICACHE_BLOCKLENINBITS 256
// Integer Divider Configuration
// DIV_BITSPERCYCLE must be 1, 2, or 4
`define DIV_BITSPERCYCLE 4
// Legal number of PMP entries are 0, 16, or 64
`define PMP_ENTRIES 16

7
wally-pipelined/config/coremark/wally-config.vh
View File

@ -65,6 +65,13 @@
`define ICACHE_WAYSIZEINBYTES 4096
`define ICACHE_BLOCKLENINBITS 256
// Integer Divider Configuration
// DIV_BITSPERCYCLE must be 1, 2, or 4
`define DIV_BITSPERCYCLE 4
// Legal number of PMP entries are 0, 16, or 64
`define PMP_ENTRIES 16
// Address space
`define RESET_VECTOR 64'h00000000000100b0

4
wally-pipelined/config/coremark_bare/wally-config.vh
View File

@ -66,6 +66,10 @@
`define ICACHE_WAYSIZEINBYTES 4096
`define ICACHE_BLOCKLENINBITS 256
// Integer Divider Configuration
// DIV_BITSPERCYCLE must be 1, 2, or 4
`define DIV_BITSPERCYCLE 4
// Legal number of PMP entries are 0, 16, or 64
`define PMP_ENTRIES 64

4
wally-pipelined/config/rv32ic/wally-config.vh
View File

@ -64,6 +64,10 @@
`define ICACHE_WAYSIZEINBYTES 4096
`define ICACHE_BLOCKLENINBITS 256
// Integer Divider Configuration
// DIV_BITSPERCYCLE must be 1, 2, or 4
`define DIV_BITSPERCYCLE 4
// Legal number of PMP entries are 0, 16, or 64
`define PMP_ENTRIES 16

4
wally-pipelined/config/rv32icfd/wally-config.vh
View File

@ -64,6 +64,10 @@
`define ICACHE_WAYSIZEINBYTES 4096
`define ICACHE_BLOCKLENINBITS 256
// Integer Divider Configuration
// DIV_BITSPERCYCLE must be 1, 2, or 4
`define DIV_BITSPERCYCLE 4
// Legal number of PMP entries are 0, 16, or 64
`define PMP_ENTRIES 16

7
wally-pipelined/config/rv64BP/wally-config.vh
View File

@ -66,6 +66,13 @@
`define ICACHE_WAYSIZEINBYTES 4096
`define ICACHE_BLOCKLENINBITS 256
// Integer Divider Configuration
// DIV_BITSPERCYCLE must be 1, 2, or 4
`define DIV_BITSPERCYCLE 4
// Legal number of PMP entries are 0, 16, or 64
`define PMP_ENTRIES 16
// Address space
`define RESET_VECTOR 64'h0000000000000000

4
wally-pipelined/config/rv64ic/wally-config.vh
View File

@ -65,6 +65,10 @@
`define ICACHE_WAYSIZEINBYTES 4096
`define ICACHE_BLOCKLENINBITS 256
// Integer Divider Configuration
// DIV_BITSPERCYCLE must be 1, 2, or 4
`define DIV_BITSPERCYCLE 1
// Legal number of PMP entries are 0, 16, or 64
`define PMP_ENTRIES 64

4
wally-pipelined/config/rv64icfd/wally-config.vh
View File

@ -66,6 +66,10 @@
`define ICACHE_WAYSIZEINBYTES 4096
`define ICACHE_BLOCKLENINBITS 256
// Integer Divider Configuration
// DIV_BITSPERCYCLE must be 1, 2, or 4
`define DIV_BITSPERCYCLE 4
// Legal number of PMP entries are 0, 16, or 64
`define PMP_ENTRIES 64

7
wally-pipelined/config/rv64imc/wally-config.vh
View File

@ -64,6 +64,13 @@
`define ICACHE_WAYSIZEINBYTES 4096
`define ICACHE_BLOCKLENINBITS 256
// Integer Divider Configuration
// DIV_BITSPERCYCLE must be 1, 2, or 4
`define DIV_BITSPERCYCLE 4
// Legal number of PMP entries are 0, 16, or 64
`define PMP_ENTRIES 64
// Address space
`define RESET_VECTOR 64'h0000000080000000

6
wally-pipelined/linux-testgen/linux-testvectors/tvLinker.sh
View File

@ -1,9 +1,5 @@
echo "Warning: this script will only work if your repo is on Tera"
ln -s /courses/e190ax/buildroot_boot/parsedCSRs.txt parsedCSRs.txt
ln -s /courses/e190ax/buildroot_boot/parsedMemRead.txt parsedMemRead.txt
ln -s /courses/e190ax/buildroot_boot/parsedMemWrite.txt parsedMemWrite.txt
ln -s /courses/e190ax/buildroot_boot/parsedPC.txt parsedPC.txt
ln -s /courses/e190ax/buildroot_boot/parsedRegs.txt parsedRegs.txt
ln -s /courses/e190ax/buildroot_boot/all.txt all.txt
ln -s /courses/e190ax/buildroot_boot/bootmem.txt bootmem.txt
ln -s /courses/e190ax/buildroot_boot/ram.txt ram.txt
echo "Done!"

6
wally-pipelined/linux-testgen/linux-testvectors/tvUnlinker.sh
View File

@ -1,10 +1,6 @@
# This could be nice to use if you want to mess with the testvectors
# without corrupting the stable copies on Tera.
unlink parsedCSRs.txt
unlink parsedMemRead.txt
unlink parsedMemWrite.txt
unlink parsedPC.txt
unlink parsedRegs.txt
unlink all.txt
unlink bootmem.txt
unlink ram.txt
echo "Done!"

35
wally-pipelined/linux-testgen/testvector-generation/GenerateCheckpoint.sh Executable file
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@ -0,0 +1,35 @@
#!/bin/bash
# Oftentimes this script runs so long you'll go to sleep.
# But you don't want the script to die when your computer goes to sleep.
# So consider invoking this with nohup (i.e. "nohup ./logAllBuildroot.sh")
# You can run "tail -f nohup.out" to see what would've
# outputted to the terminal if you didn't use nohup
# use on tera.
customQemu="/courses/e190ax/qemu_sim/rv64_initrd/qemu_experimental/qemu/build/qemu-system-riscv64"
# use on other systems
#customQemu="qemu-system-riscv64"
instrs=50000000
imageDir="../buildroot-image-output"
outDir="../linux-testvectors/checkpoint$instrs"
intermedDir="$outDir/intermediate-outputs"
read -p "This scripts is going to create a checkpoint at $instrs instrs.
Is that what you wanted? (y/n) " -n 1 -r
echo
if [[ $REPLY =~ ^[Yy]$ ]]
then
mkdir -p $outDir
mkdir -p $intermedDir
# Simulate QEMU, parse QEMU trace, run GDB script which logs a bunch of data at the checkpoint
($customQemu -M virt -nographic -bios $imageDir/fw_jump.elf -kernel $imageDir/Image -append "root=/dev/vda ro" -initrd $imageDir/rootfs.cpio -rtc clock=vm -icount shift=1 -d nochain,cpu,in_asm -serial /dev/null -singlestep -gdb tcp::1240 -S 2>&1 1>&2 | ./parse_qemu.py | ./parseNew.py | ./remove_dup.awk > $intermedDir/rawTrace.txt) & riscv64-unknown-elf-gdb -x ./checkpoint.gdb -ex "createCheckpoint $instrs \"$intermedDir\""
# Post-Process GDB outputs
./parseState.py "$outDir"
./fix_mem.py "$intermedDir/ramGDB.txt" "$outDir/ram.txt"
else
echo "You can change the number of instructions by editing the \"instrs\" variable in this script."
echo "Have a nice day!"
fi

56
wally-pipelined/linux-testgen/testvector-generation/checkpoint.gdb Executable file
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@ -0,0 +1,56 @@
define createCheckpoint
# GDB config
set pagination off
set logging overwrite on
set logging redirect on
set confirm off
# QEMU must also use TCP port 1240
target extended-remote :1240
# QEMU Config
maintenance packet Qqemu.PhyMemMode:1
# Argument Parsing
set $statePath=$arg1
set $ramPath=$arg1
eval "set $statePath = \"%s/stateGDB.txt\"", $statePath
eval "set $ramPath = \"%s/ramGDB.txt\"", $ramPath
# Symbol file
file ../buildroot-image-output/vmlinux
# Step over reset vector into actual code
stepi 1000
# Set breakpoint for where to stop
b do_idle
# Proceed to checkpoint
printf "GDB proceeding to checkpoint at %d instrs\n", $arg0
stepi $arg0-1000
printf "Reached checkpoint at %d instrs\n", $arg0
# Log all registers to a file
printf "GDB storing state to %s\n", $statePath
eval "set logging file %s", $statePath
set logging on
info all-registers
set logging off
# Log main memory to a file
printf "GDB storing RAM to %s\n", $ramPath
eval "set logging file %s", $ramPath
set logging on
x/134217728xb 0x80000000
set logging off
# Continue to checkpoint; stop on the 3rd time
# Should reach login prompt by then
printf "GDB continuing execution to login prompt\n"
ignore 1 2
c
printf "GDB reached login prompt!\n"
kill
q
end

5
wally-pipelined/linux-testgen/testvector-generation/fix_mem.py
View File

@ -6,9 +6,10 @@ if len(sys.argv) != 3:
inputFile = sys.argv[1]
outputFile = sys.argv[2]
if not os.path.exists(inputFile):
sys.exit('Error input file '+inputFile+'not found')
print('Translating '+os.path.basename(inputFile)+' to '+os.path.basename(outputFile))
sys.exit('Error input file '+inputFile+' not found')
print('Begin translating '+os.path.basename(inputFile)+' to '+os.path.basename(outputFile))
with open(inputFile, 'r') as f:
with open(outputFile, 'w') as w:
for l in f:
w.write(f'{"".join([x[2:] for x in l.split()[:0:-1]])}\n')
print('Finished translating '+os.path.basename(inputFile)+' to '+os.path.basename(outputFile)+'!')

5
wally-pipelined/linux-testgen/testvector-generation/parseNew.py
View File

@ -140,6 +140,7 @@ CurrentInstr = ['0', '0', None, 'other', {'zero': 0, 'ra': 0, 'sp': 0, 'gp': 0,
lineNum = 0
StartLine = 0
EndLine = 0
numInstrs = 0
#instructions = []
MemAdr = 0
lines = []
@ -195,6 +196,10 @@ for line in fileinput.input('-'):
lines.clear()
#instructions.append(MoveInstrToRegWriteLst)
PrintInstr(MoveInstrToRegWriteLst, sys.stdout)
numInstrs +=1
if (numInstrs % 1e4 == 0):
sys.stderr.write('Trace parser reached '+str(numInstrs/1.0e6)+' million instrs.\n')
sys.stderr.flush()
lineNum += 1

79
wally-pipelined/linux-testgen/testvector-generation/parseState.py Executable file
View File

@ -0,0 +1,79 @@
#! /usr/bin/python3
import sys, os
################
# Helper Funcs #
################
def tokenize(string):
tokens = []
token = ''
whitespace = 0
prevWhitespace = 0
for char in string:
prevWhitespace = whitespace
whitespace = char in ' \t\n'
if (whitespace):
if ((not prevWhitespace) and (token != '')):
tokens.append(token)
token = ''
else:
token = token + char
return tokens
#############
# Main Code #
#############
print("Begin parsing state.")
# Parse Args
if len(sys.argv) != 2:
sys.exit('Error parseState.py expects 1 arg:\n parseState.py <path_to_checkpoint_dir>')
outDir = sys.argv[1]+'/'
stateGDBpath = outDir+'intermediate-outputs/stateGDB.txt'
if not os.path.exists(stateGDBpath):
sys.exit('Error input file '+stateGDBpath+'not found')
listCSRs = ['hpmcounter','pmpcfg','pmpaddr']
singleCSRs = ['mip','mie','mscratch','mcause','mepc','mtvec','medeleg','mideleg','mcounteren','sscratch','scause','sepc','stvec','sedeleg','sideleg','scounteren','satp','mstatus']
# Initialize List CSR files to empty
# (because later we'll open them in append mode)
for csr in listCSRs:
outFileName = 'checkpoint-'+csr.upper()
outFile = open(outDir+outFileName, 'w')
outFile.close()
# Initial State for Main Loop
currState = 'regFile'
regFileIndex = 0
outFileName = 'checkpoint-regfile.txt'
outFile = open(outDir+outFileName, 'w')
# Main Loop
with open(stateGDBpath, 'r') as stateGDB:
for line in stateGDB:
line = tokenize(line)
name = line[0]
val = line[1][2:]
if (currState == 'regFile'):
if (regFileIndex == 0 and name != 'zero'):
print('Whoops! Expected regFile registers to come first, starting with zero')
exit(1)
outFile.write(val+'\n')
regFileIndex += 1
if (regFileIndex == 32):
outFile.close()
currState = 'CSRs'
elif (currState == 'CSRs'):
if name in singleCSRs:
outFileName = 'checkpoint-'+name.upper()
outFile = open(outDir+outFileName, 'w')
outFile.write(val+'\n')
outFile.close()
elif name.strip('0123456789') in listCSRs:
outFileName = 'checkpoint-'+name.upper().strip('0123456789')
outFile = open(outDir+outFileName, 'a')
outFile.write(val+'\n')
outFile.close()
print("Finished parsing state!")

2
wally-pipelined/regression/linux-wave.do
View File

@ -176,7 +176,7 @@ add wave -noupdate -group muldiv /testbench/dut/hart/mdu/FlushM
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/FlushW
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/MulDivResultW
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/genblk1/div/start
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/DivDoneE
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/DivDoneM
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/DivBusyE
add wave -noupdate -group divider /testbench/dut/hart/mdu/genblk1/div/fsm1/CURRENT_STATE
add wave -noupdate -group divider /testbench/dut/hart/mdu/genblk1/div/N

2
wally-pipelined/regression/wally-pipelined.do
View File

@ -43,7 +43,7 @@ view wave
do ./wave-dos/peripheral-waves.do
-- Run the Simulation
#run 5000
#run 3600
run -all
#quit
noview ../testbench/testbench-imperas.sv

9
wally-pipelined/regression/wave-dos/peripheral-waves.do
View File

@ -35,6 +35,11 @@ add wave -hex /testbench/dut/hart/ieu/dp/SrcAE
add wave -hex /testbench/dut/hart/ieu/dp/SrcBE
add wave -hex /testbench/dut/hart/ieu/dp/ALUResultE
#add wave /testbench/dut/hart/ieu/dp/PCSrcE
add wave /testbench/dut/hart/mdu/genblk1/div/StartDivideE
add wave /testbench/dut/hart/mdu/DivBusyE
add wave -hex /testbench/dut/hart/mdu/genblk1/div/RemM
add wave -hex /testbench/dut/hart/mdu/genblk1/div/QuotM
add wave -divider
add wave -hex /testbench/dut/hart/ifu/PCM
add wave -hex /testbench/dut/hart/ifu/InstrM
@ -48,9 +53,9 @@ add wave -hex /testbench/dut/hart/lsu/dcache/ReadDataM
add wave -hex /testbench/dut/hart/ebu/ReadDataM
add wave -divider
add wave -hex /testbench/PCW
add wave -hex /testbench/InstrW
#add wave -hex /testbench/InstrW
add wave -hex /testbench/dut/hart/ieu/c/InstrValidW
add wave /testbench/InstrWName
#add wave /testbench/InstrWName
add wave -hex /testbench/dut/hart/ReadDataW
add wave -hex /testbench/dut/hart/ieu/dp/ResultW
add wave -hex /testbench/dut/hart/ieu/dp/RegWriteW

2
wally-pipelined/regression/wave.do
View File

@ -179,7 +179,7 @@ add wave -noupdate -group muldiv /testbench/dut/hart/mdu/FlushM
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/FlushW
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/MulDivResultW
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/genblk1/div/start
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/DivDoneE
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/DivDoneM
add wave -noupdate -group muldiv /testbench/dut/hart/mdu/DivBusyE
add wave -noupdate -group divider /testbench/dut/hart/mdu/genblk1/div/fsm1/CURRENT_STATE
add wave -noupdate -group divider /testbench/dut/hart/mdu/genblk1/div/N

35
wally-pipelined/src/generic/adder.sv Normal file
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@ -0,0 +1,35 @@
///////////////////////////////////////////
// adder.sv
//
// Written: David_Harris@hmc.edu 2 October 2021
// Modified:
//
// Purpose: Adder
//
// A component of the Wally configurable RISC-V project.
//
// Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
// modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
// OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
///////////////////////////////////////////
`include "wally-config.vh"
module adder #(parameter WIDTH=8) (
input logic [WIDTH-1:0] a, b,
output logic [WIDTH-1:0] y);
assign y = a + b;
endmodule

34
wally-pipelined/src/generic/neg.sv Normal file
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@ -0,0 +1,34 @@
///////////////////////////////////////////
// neg.sv
//
// Written: David_Harris@hmc.edu 28 September 2021
// Modified:
//
// Purpose: 2's complement negator
//
// A component of the Wally configurable RISC-V project.
//
// Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
// modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
// OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
///////////////////////////////////////////
`include "wally-config.vh"
module neg #(parameter WIDTH = 8) (
input logic [WIDTH-1:0] a,
output logic [WIDTH-1:0] y);
assign y = ~a + 1;
endmodule

5
wally-pipelined/src/ieu/forward.sv
View File

@ -30,9 +30,10 @@ module forward(
input logic [4:0] Rs1D, Rs2D, Rs1E, Rs2E, RdE, RdM, RdW,
input logic MemReadE, MulDivE, CSRReadE,
input logic RegWriteM, RegWriteW,
input logic DivDoneE, DivBusyE,
input logic DivBusyE,
input logic FWriteIntE, FWriteIntM, FWriteIntW,
input logic SCE,
input logic StallD,
// Forwarding controls
output logic [1:0] ForwardAE, ForwardBE,
output logic FPUStallD, LoadStallD, MulDivStallD, CSRRdStallD
@ -53,7 +54,7 @@ module forward(
// Stall on dependent operations that finish in Mem Stage and can't bypass in time
assign FPUStallD = FWriteIntE & ((Rs1D == RdE) | (Rs2D == RdE));
assign LoadStallD = (MemReadE|SCE) & ((Rs1D == RdE) | (Rs2D == RdE));
assign MulDivStallD = MulDivE & ((Rs1D == RdE) | (Rs2D == RdE)) | MulDivE | DivBusyE; // *** extend with stalls for divide
assign MulDivStallD = MulDivE & ((Rs1D == RdE) | (Rs2D == RdE));
assign CSRRdStallD = CSRReadE & ((Rs1D == RdE) | (Rs2D == RdE));
endmodule

1
wally-pipelined/src/ieu/ieu.sv
View File

@ -73,7 +73,6 @@ module ieu (
input logic FlushD, FlushE, FlushM, FlushW,
output logic FPUStallD, LoadStallD, MulDivStallD, CSRRdStallD,
output logic PCSrcE,
input logic DivDoneE,
input logic DivBusyE,
output logic CSRReadM, CSRWriteM, PrivilegedM,
output logic CSRWritePendingDEM,

3
wally-pipelined/src/muldiv/div.sv
View File

@ -278,13 +278,14 @@ module otf #(parameter WIDTH=8)
assign QMstar = R1Q;
endmodule // otf8
/*
module adder #(parameter WIDTH=8) (input logic [WIDTH-1:0] a, b,
output logic [WIDTH-1:0] y);
assign y = a + b;
endmodule // adder
*/
module fa (input logic a, b, c, output logic sum, carry);

76
wally-pipelined/src/muldiv/intdiv_restoring.sv
View File

@ -1,76 +0,0 @@
///////////////////////////////////////////
// intdiv_restoring.sv
//
// Written: David_Harris@hmc.edu 12 September 2021
// Modified:
//
// Purpose: Restoring integer division using a shift register a subtractor
//
// A component of the Wally configurable RISC-V project.
//
// Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
// modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
// OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
///////////////////////////////////////////
`include "wally-config.vh"
module intdiv_restoring (
input logic clk,
input logic reset,
input logic signedDivide,
input logic start,
input logic [`XLEN-1:0] X, D,
output logic busy, done,
output logic [`XLEN-1:0] Q, REM
);
logic [`XLEN-1:0] W, Win, Wshift, Wprime, Wnext, XQ, XQin, XQshift;
logic qi; // curent quotient bit
localparam STEPBITS = $clog2(`XLEN);
logic [STEPBITS:0] step;
logic div0;
// restoring division
mux2 #(`XLEN) wmux(W, 0, start, Win);
mux2 #(`XLEN) xmux(0, X, start, XQin);
assign {Wshift, XQshift} = {Win[`XLEN-2:0], XQin, qi};
assign {qi, Wprime} = Wshift - D; // subtractor, carry out determines quotient bit
mux2 #(`XLEN) wrestoremux(Wshift, Wprime, qi, Wnext);
flopen #(`XLEN) wreg(clk, busy, Wnext, W);
flopen #(`XLEN) xreg(clk, busy, XQshift, XQ);
// outputs
// *** sign extension, handling W instructions
assign div0 = (D == 0);
mux2 #(`XLEN) qmux(XQ, {`XLEN{1'b1}}, div0, Q); // Q taken from XQ register, or all 1s when dividing by zero
mux2 #(`XLEN) remmux(W, X, div0, REM); // REM taken from W register, or from X when dividing by zero
// busy logic
always_ff @(posedge clk)
if (start) begin
busy = 1; done = 0; step = 0;
end else if (busy) begin
step = step + 1;
if (step[STEPBITS] | div0) begin // *** early terminate on division by 0
step = 0;
busy = 0;
done = 1;
end
end else if (done) begin
done = 0;
end
endmodule // muldiv

134
wally-pipelined/src/muldiv/intdivrestoring.sv Normal file
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@ -0,0 +1,134 @@
///////////////////////////////////////////
// intdivrestoring.sv
//
// Written: David_Harris@hmc.edu 12 September 2021
// Modified:
//
// Purpose: Restoring integer division using a shift register and subtractor
//
// A component of the Wally configurable RISC-V project.
//
// Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
// modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
// OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
///////////////////////////////////////////
`include "wally-config.vh"
/* verilator lint_off UNOPTFLAT */
module intdivrestoring (
input logic clk,
input logic reset,
input logic StallM, FlushM,
input logic SignedDivideE, W64E,
input logic StartDivideE,
input logic [`XLEN-1:0] SrcAE, SrcBE,
output logic BusyE, DivDoneM,
output logic [`XLEN-1:0] QuotM, RemM
);
logic [`XLEN-1:0] WE[`DIV_BITSPERCYCLE:0];
logic [`XLEN-1:0] XQE[`DIV_BITSPERCYCLE:0];
logic [`XLEN-1:0] DSavedE, XSavedE, XSavedM, DinE, XinE, DnE, DAbsBE, XnE, XInitE, WM, XQM, WnM, XQnM;
localparam STEPBITS = $clog2(`XLEN/`DIV_BITSPERCYCLE);
logic [STEPBITS:0] step;
logic Div0E, Div0M;
logic DivInitE, SignXE, SignXM, SignDE, SignDM, NegWM, NegQM;
logic SignedDivideM;
// save inputs on the negative edge of the execute clock.
// This is unusual practice, but the inputs are not guaranteed to be stable due to some hazard and forwarding logic.
// Saving the inputs is the most hardware-efficient way to fix the issue.
flopen #(`XLEN) xsavereg(~clk, StartDivideE, SrcAE, XSavedE);
flopen #(`XLEN) dsavereg(~clk, StartDivideE, SrcBE, DSavedE);
// Handle sign extension for W-type instructions
generate
if (`XLEN == 64) begin // RV64 has W-type instructions
mux2 #(`XLEN) xinmux(XSavedE, {XSavedE[31:0], 32'b0}, W64E, XinE);
mux2 #(`XLEN) dinmux(DSavedE, {{32{DSavedE[31]&SignedDivideE}}, DSavedE[31:0]}, W64E, DinE);
end else begin // RV32 has no W-type instructions
assign XinE = XSavedE;
assign DinE = DSavedE;
end
endgenerate
// Extract sign bits and check fo division by zero
assign SignDE = DinE[`XLEN-1];
assign SignXE = XinE[`XLEN-1];
assign Div0E = (DinE == 0);
// pipeline registers
flopenrc #(1) SignedDivideMReg(clk, reset, FlushM, ~StallM, SignedDivideE, SignedDivideM);
flopenrc #(1) Div0eMReg(clk, reset, FlushM, ~StallM, Div0E, Div0M);
flopenrc #(1) SignDMReg(clk, reset, FlushM, ~StallM, SignDE, SignDM);
flopenrc #(1) SignXMReg(clk, reset, FlushM, ~StallM, SignXE, SignXM);
flopenrc #(`XLEN) XSavedMReg(clk, reset, FlushM, ~StallM, XSavedE, XSavedM); // is this truly necessary?
// Take absolute value for signed operations, and negate D to handle subtraction in divider stages
neg #(`XLEN) negd(DinE, DnE);
mux2 #(`XLEN) dabsmux(DnE, DinE, SignedDivideE & SignDE, DAbsBE); // take absolute value for signed operations, and negate for subtraction setp
neg #(`XLEN) negx(XinE, XnE);
mux2 #(`XLEN) xabsmux(XinE, XnE, SignedDivideE & SignXE, XInitE); // need original X as remainder if doing divide by 0
// initialization multiplexers on first cycle of operation (one cycle after start is asserted)
mux2 #(`XLEN) wmux(WM, {`XLEN{1'b0}}, DivInitE, WE[0]);
mux2 #(`XLEN) xmux(XQM, XInitE, DivInitE, XQE[0]);
// one copy of divstep for each bit produced per cycle
generate
genvar i;
for (i=0; i<`DIV_BITSPERCYCLE; i = i+1)
intdivrestoringstep divstep(WE[i], XQE[i], DAbsBE, WE[i+1], XQE[i+1]);
endgenerate
// registers after division steps
flopen #(`XLEN) wreg(clk, BusyE, WE[`DIV_BITSPERCYCLE], WM);
flopen #(`XLEN) xreg(clk, BusyE, XQE[`DIV_BITSPERCYCLE], XQM);
// Output selection logic in Memory Stage
// On final setp of signed operations, negate outputs as needed
assign NegWM = SignedDivideM & SignXM; // Remainder should have same sign as X
assign NegQM = SignedDivideM & (SignXM ^ SignDM); // Quotient should be negative if one operand is positive and the other is negative
neg #(`XLEN) wneg(WM, WnM);
neg #(`XLEN) qneg(XQM, XQnM);
// Select appropriate output: normal, negated, or for divide by zero
mux3 #(`XLEN) qmux(XQM, XQnM, {`XLEN{1'b1}}, {Div0M, NegQM}, QuotM); // Q taken from XQ register, negated if necessary, or all 1s when dividing by zero
mux3 #(`XLEN) remmux(WM, WnM, XSavedM, {Div0M, NegWM}, RemM); // REM taken from W register, negated if necessary, or from X when dividing by zero
// Divider FSM to sequence Init, Busy, and Done
always_ff @(posedge clk)
if (reset) begin
BusyE = 0; DivDoneM = 0; step = 0; DivInitE = 0;
end else if (StartDivideE & ~StallM) begin
if (Div0E) DivDoneM = 1;
else begin
BusyE = 1; step = 0; DivInitE = 1;
end
end else if (BusyE & ~DivDoneM) begin // pause one cycle at beginning of signed operations for absolute value
DivInitE = 0;
step = step + 1;
if (step[STEPBITS] | (`XLEN==64) & W64E & step[STEPBITS-1]) begin // complete in half the time for W-type instructions
step = 0;
BusyE = 0;
DivDoneM = 1;
end
end else if (DivDoneM) begin
DivDoneM = 0;
BusyE = 0;
end
endmodule
/* verilator lint_on UNOPTFLAT */

43
wally-pipelined/src/muldiv/intdivrestoringstep.sv Normal file
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@ -0,0 +1,43 @@
///////////////////////////////////////////
// intdivrestoringstep.sv
//
// Written: David_Harris@hmc.edu 2 October 2021
// Modified:
//
// Purpose: Restoring integer division using a shift register and subtractor
//
// A component of the Wally configurable RISC-V project.
//
// Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
// modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
// OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
///////////////////////////////////////////
`include "wally-config.vh"
/* verilator lint_off UNOPTFLAT */
module intdivrestoringstep(
input logic [`XLEN-1:0] W, XQ, DAbsB,
output logic [`XLEN-1:0] WOut, XQOut);
logic [`XLEN-1:0] WShift, WPrime;
logic qi, qib;
assign {WShift, XQOut} = {W[`XLEN-2:0], XQ, qi}; // shift W and X/Q left, insert quotient bit at bottom
adder #(`XLEN+1) wdsub({1'b0, WShift}, {1'b1, DAbsB}, {qib, WPrime}); // effective subtractor, carry out determines quotient bit
assign qi = ~qib;
mux2 #(`XLEN) wrestoremux(WShift, WPrime, qi, WOut); // if quotient is zero, restore W
endmodule
/* verilator lint_on UNOPTFLAT */

111
wally-pipelined/src/muldiv/muldiv.sv
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@ -31,12 +31,11 @@ module muldiv (
input logic [31:0] InstrD,
// Execute Stage interface
input logic [`XLEN-1:0] SrcAE, SrcBE,
input logic [2:0] Funct3E,
input logic [2:0] Funct3E, Funct3M,
input logic MulDivE, W64E,
// Writeback stage
output logic [`XLEN-1:0] MulDivResultW,
// Divide Done
output logic DivDoneE,
output logic DivBusyE,
// hazards
input logic StallE, StallM, StallW, FlushM, FlushW
@ -45,104 +44,54 @@ module muldiv (
generate
if (`M_SUPPORTED) begin
logic [`XLEN-1:0] MulDivResultE, MulDivResultM;
logic [`XLEN-1:0] PrelimResultE;
logic [`XLEN-1:0] QuotE, RemE;
logic [`XLEN*2-1:0] ProdE;
logic [`XLEN-1:0] PrelimResultM;
logic [`XLEN-1:0] QuotM, RemM;
logic [`XLEN*2-1:0] ProdE, ProdM;
logic enable_q;
logic [2:0] Funct3E_Q;
logic div0error; // ***unused
logic [`XLEN-1:0] N, D;
logic [`XLEN-1:0] Num0, Den0;
logic gclk;
logic DivStartE;
logic startDivideE;
logic signedDivide;
logic StartDivideE, BusyE, DivDoneM;
logic SignedDivideE;
logic W64M;
// Multiplier
mul mul(.*);
flopenrc #(`XLEN*2) ProdMReg(clk, reset, FlushM, ~StallM, ProdE, ProdM);
// Divide
// Start a divide when a new division instruction is received and the divider isn't already busy or finishing
assign StartDivideE = MulDivE & Funct3E[2] & ~BusyE & ~DivDoneM;
assign DivBusyE = StartDivideE | BusyE;
assign SignedDivideE = ~Funct3E[0];
intdivrestoring div(.clk, .reset, .StallM, .FlushM,
.SignedDivideE, .W64E, .StartDivideE, .SrcAE, .SrcBE, .BusyE, .DivDoneM, .QuotM, .RemM);
// *** replace this clock gater
always @(negedge clk) begin
enable_q <= ~StallM;
end
assign gclk = enable_q & clk;
// Handle sign extension for W-type instructions
if (`XLEN == 64) begin // RV64 has W-type instructions
assign Num0 = W64E ? {{32{SrcAE[31]&signedDivide}}, SrcAE[31:0]} : SrcAE;
assign Den0 = W64E ? {{32{SrcBE[31]&signedDivide}}, SrcBE[31:0]} : SrcBE;
end else begin // RV32 has no W-type instructions
assign Num0 = SrcAE;
assign Den0 = SrcBE;
end
// capture the Numerator/Denominator
flopenrc #(`XLEN) reg_num (.d(Num0), .q(N),
.en(startDivideE), .clear(DivDoneE),
.reset(reset), .clk(~gclk));
flopenrc #(`XLEN) reg_den (.d(Den0), .q(D),
.en(startDivideE), .clear(DivDoneE),
.reset(reset), .clk(~gclk));
assign signedDivide = (Funct3E[2]&~Funct3E[1]&~Funct3E[0]) | (Funct3E[2]&Funct3E[1]&~Funct3E[0]);
intdiv #(`XLEN) div (QuotE, RemE, DivDoneE, DivBusyE, div0error, N, D, gclk, reset, startDivideE, signedDivide);
//intdiv_restoring div(.clk, .reset, .signedDivide, .start(startDivideE), .X(N), .D(D), .busy(DivBusyE), .done(DivDoneE), .Q(QuotE), .REM(RemE));
// Added for debugging of start signal for divide
assign startDivideE = MulDivE&DivStartE&~DivBusyE;
// capture the start control signals since they are not held constant.
// *** appears to be unused
flopenrc #(3) funct3ereg (.d(Funct3E),
.q(Funct3E_Q),
.en(DivStartE),
.clear(DivDoneE),
.reset(reset),
.clk(clk));
// Select result
// Result multiplexer
always_comb
case (Funct3E)
3'b000: PrelimResultE = ProdE[`XLEN-1:0];
3'b001: PrelimResultE = ProdE[`XLEN*2-1:`XLEN];
3'b010: PrelimResultE = ProdE[`XLEN*2-1:`XLEN];
3'b011: PrelimResultE = ProdE[`XLEN*2-1:`XLEN];
3'b100: PrelimResultE = QuotE;
3'b101: PrelimResultE = QuotE;
3'b110: PrelimResultE = RemE;
3'b111: PrelimResultE = RemE;
endcase // case (Funct3E)
// Start Divide process. This simplifies to DivStartE = Funct3E[2];
always_comb
case (Funct3E)
3'b000: DivStartE = 1'b0;
3'b001: DivStartE = 1'b0;
3'b010: DivStartE = 1'b0;
3'b011: DivStartE = 1'b0;
3'b100: DivStartE = 1'b1;
3'b101: DivStartE = 1'b1;
3'b110: DivStartE = 1'b1;
3'b111: DivStartE = 1'b1;
case (Funct3M)
3'b000: PrelimResultM = ProdM[`XLEN-1:0];
3'b001: PrelimResultM = ProdM[`XLEN*2-1:`XLEN];
3'b010: PrelimResultM = ProdM[`XLEN*2-1:`XLEN];
3'b011: PrelimResultM = ProdM[`XLEN*2-1:`XLEN];
3'b100: PrelimResultM = QuotM;
3'b101: PrelimResultM = QuotM;
3'b110: PrelimResultM = RemM;
3'b111: PrelimResultM = RemM;
endcase
// Handle sign extension for W-type instructions
flopenrc #(1) W64MReg(clk, reset, FlushM, ~StallM, W64E, W64M);
if (`XLEN == 64) begin // RV64 has W-type instructions
assign MulDivResultE = W64E ? {{32{PrelimResultE[31]}}, PrelimResultE[31:0]} : PrelimResultE;
assign MulDivResultM = W64M ? {{32{PrelimResultM[31]}}, PrelimResultM[31:0]} : PrelimResultM;
end else begin // RV32 has no W-type instructions
assign MulDivResultE = PrelimResultE;
assign MulDivResultM = PrelimResultM;
end
flopenrc #(`XLEN) MulDivResultMReg(clk, reset, FlushM, ~StallM, MulDivResultE, MulDivResultM);
// Writeback stage pipeline register
flopenrc #(`XLEN) MulDivResultWReg(clk, reset, FlushW, ~StallW, MulDivResultM, MulDivResultW);
end else begin // no M instructions supported
assign MulDivResultW = 0;
assign DivBusyE = 0;
assign DivDoneE = 0;
end
endgenerate

1
wally-pipelined/src/wally/wallypipelinedhart.sv
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@ -88,7 +88,6 @@ module wallypipelinedhart
logic InvalidateICacheM, FlushDCacheM;
logic PCSrcE;
logic CSRWritePendingDEM;
logic DivDoneE;
logic DivBusyE;
logic RegWriteD;
logic LoadStallD, StoreStallD, MulDivStallD, CSRRdStallD;

2
wally-pipelined/testbench/common/instrTrackerTB.sv
View File

@ -13,5 +13,5 @@ module instrTrackerTB(
instrNameDecTB ddec(InstrD, InstrDName);
instrNameDecTB edec(InstrE, InstrEName);
instrNameDecTB mdec(InstrM, InstrMName);
instrNameDecTB wdec(InstrW, InstrWName);
instrNameDecTB wdec(InstrW, InstrWName); // *** delete this because InstrW is deleted from IFU
endmodule

4
wally-pipelined/testbench/testbench-arch.sv
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@ -430,7 +430,7 @@ string tests32f[] = '{
// tests = {tests64p,tests64i, tests64periph};
if (`C_SUPPORTED) tests = {tests, tests64ic};
// else tests = {tests, tests64iNOc};
if (`M_SUPPORTED) tests = {tests, tests64m};
if (`M_SUPPORTED) tests = {tests64m, tests};
/* if (`F_SUPPORTED) tests = {tests64f, tests};
if (`D_SUPPORTED) tests = {tests64d, tests};
if (`MEM_VIRTMEM) tests = {tests64mmu, tests};
@ -449,7 +449,7 @@ string tests32f[] = '{
tests = {tests32priv, tests32i};
//tests = {tests32i, tests32priv};
if (`C_SUPPORTED) tests = {tests, tests32ic};
if (`M_SUPPORTED) tests = {tests, tests32m};
if (`M_SUPPORTED) tests = {tests32m, tests};
//if (`C_SUPPORTED) tests = {tests32ic, tests};
//if (`M_SUPPORTED) tests = {tests32m, tests};
/* tests = {tests32i, tests32p};//,tests32periph}; *** broken at the moment

31
wally-pipelined/testbench/testbench-imperas.sv
View File

@ -161,6 +161,10 @@ string tests32f[] = '{
};
string tests64m[] = '{
"rv64m/I-REMUW-01", "3000",
"rv64m/I-REMW-01", "3000",
"rv64m/I-DIVUW-01", "3000",
"rv64m/I-DIVW-01", "3000",
"rv64m/I-MUL-01", "3000",
"rv64m/I-MULH-01", "3000",
"rv64m/I-MULHSU-01", "3000",
@ -168,12 +172,8 @@ string tests32f[] = '{
"rv64m/I-MULW-01", "3000",
"rv64m/I-DIV-01", "3000",
"rv64m/I-DIVU-01", "3000",
"rv64m/I-DIVUW-01", "3000",
"rv64m/I-DIVW-01", "3000",
"rv64m/I-REM-01", "3000",
"rv64m/I-REMU-01", "3000",
"rv64m/I-REMUW-01", "3000",
"rv64m/I-REMW-01", "3000"
"rv64m/I-REMU-01", "3000"
};
string tests64ic[] = '{
@ -318,14 +318,14 @@ string tests32f[] = '{
};
string tests32m[] = '{
"rv32m/I-DIVU-01", "2000",
"rv32m/I-REMU-01", "2000",
"rv32m/I-DIV-01", "2000",
"rv32m/I-REM-01", "2000",
"rv32m/I-MUL-01", "2000",
"rv32m/I-MULH-01", "2000",
"rv32m/I-MULHSU-01", "2000",
"rv32m/I-MULHU-01", "2000",
"rv32m/I-DIV-01", "2000",
"rv32m/I-DIVU-01", "2000",
"rv32m/I-REM-01", "2000",
"rv32m/I-REMU-01", "2000"
"rv32m/I-MULHU-01", "2000"
};
string tests32ic[] = '{
@ -536,11 +536,11 @@ string tests32f[] = '{
tests = {tests64p,tests64i, tests64periph};
if (`C_SUPPORTED) tests = {tests, tests64ic};
else tests = {tests, tests64iNOc};
if (`M_SUPPORTED) tests = {tests, tests64m};
if (`F_SUPPORTED) tests = {tests64f, tests};
if (`D_SUPPORTED) tests = {tests64d, tests};
if (`MEM_VIRTMEM) tests = {tests64mmu, tests};
if (`A_SUPPORTED) tests = {tests64a, tests};
if (`M_SUPPORTED) tests = {tests64m, tests};
end
//tests = {tests64a, tests};
end else begin // RV32
@ -551,12 +551,12 @@ string tests32f[] = '{
tests = tests32p;
else begin
tests = {tests32i, tests32p};//,tests32periph}; *** broken at the moment
if (`C_SUPPORTED % 2 == 1) tests = {tests, tests32ic};
if (`C_SUPPORTED) tests = {tests, tests32ic};
else tests = {tests, tests32iNOc};
if (`M_SUPPORTED % 2 == 1) tests = {tests, tests32m};
if (`F_SUPPORTED) tests = {tests32f, tests};
if (`MEM_VIRTMEM) tests = {tests32mmu, tests};
if (`A_SUPPORTED) tests = {tests32a, tests};
if (`M_SUPPORTED) tests = {tests32m, tests};
end
end
end
@ -607,9 +607,9 @@ string tests32f[] = '{
end
// read test vectors into memory
memfilename = {"../../imperas-riscv-tests/work/", tests[test], ".elf.memfile"};
romfilename = {"../../imperas-riscv-tests/imperas-boottim.txt"};
// romfilename = {"../../imperas-riscv-tests/imperas-boottim.txt"};
$readmemh(memfilename, dut.uncore.dtim.RAM);
$readmemh(romfilename, dut.uncore.bootdtim.bootdtim.RAM);
// $readmemh(romfilename, dut.uncore.bootdtim.bootdtim.RAM);
ProgramAddrMapFile = {"../../imperas-riscv-tests/work/", tests[test], ".elf.objdump.addr"};
ProgramLabelMapFile = {"../../imperas-riscv-tests/work/", tests[test], ".elf.objdump.lab"};
$display("Read memfile %s", memfilename);
@ -743,6 +743,7 @@ module riscvassertions();
// Legal number of PMP entries are 0, 16, or 64
initial begin
assert (`PMP_ENTRIES == 0 || `PMP_ENTRIES==16 || `PMP_ENTRIES==64) else $error("Illegal number of PMP entries: PMP_ENTRIES must be 0, 16, or 64");
assert (`DIV_BITSPERCYCLE == 1 || `DIV_BITSPERCYCLE==2 || `DIV_BITSPERCYCLE==4) else $error("Illegal number of divider bits/cycle: DIV_BITSPERCYCLE must be 1, 2, or 4");
assert (`F_SUPPORTED || ~`D_SUPPORTED) else $error("Can't support double without supporting float");
assert (`XLEN == 64 || ~`D_SUPPORTED) else $error("Wally does not yet support D extensions on RV32");
assert (`DCACHE_WAYSIZEINBYTES <= 4096 || `MEM_DCACHE == 0 || `MEM_VIRTMEM == 0) else $error("DCACHE_WAYSIZEINBYTES cannot exceed 4 KiB when caches and vitual memory is enabled (to prevent aliasing)");

337
wally-pipelined/testbench/testbench-linux.sv
View File

@ -21,24 +21,30 @@
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
// OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// When letting Wally go for it, let wally generate own interrupts
///////////////////////////////////////////
`include "wally-config.vh"
`define DEBUG_TRACE 0
`define DontHaltOnCSRMisMatch 1
// Debug Levels
// 0: don't check against QEMU
// 1: print disagreements with QEMU, but only halt on PCW disagreements
// 2: halt on any disagreement with QEMU except CSRs
// 3: halt on all disagreements with QEMU
// 4: print memory accesses whenever they happen
// 5: print everything
module testbench();
parameter waveOnICount = `BUSYBEAR*140000 + `BUILDROOT*6779000; // # of instructions at which to turn on waves in graphical sim
parameter waveOnICount = `BUSYBEAR*140000 + `BUILDROOT*8700000; // # of instructions at which to turn on waves in graphical sim
string ProgramAddrMapFile, ProgramLabelMapFile;
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////// DUT /////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
logic clk, reset;
logic [`AHBW-1:0] readDataExpected;
logic [31:0] HADDR;
logic [`AHBW-1:0] HWDATA;
@ -51,7 +57,6 @@ module testbench();
logic HCLK, HRESETn;
logic [`AHBW-1:0] HRDATAEXT;
logic HREADYEXT, HRESPEXT;
logic [31:0] GPIOPinsIn;
logic [31:0] GPIOPinsOut, GPIOPinsEn;
logic UARTSin, UARTSout;
@ -73,9 +78,11 @@ module testbench();
// Testbench Core
integer warningCount = 0;
integer errorCount = 0;
integer MIPexpected;
// P, Instr Checking
logic [`XLEN-1:0] PCW;
integer data_file_all;
string name;
// Write Back stage signals needed for trace compare, but don't actually
// exist in CPU.
@ -85,7 +92,6 @@ module testbench();
logic checkInstrW;
//integer RegAdr;
integer fault;
logic TrapW;
@ -130,16 +136,26 @@ module testbench();
integer NumCSRMIndex;
integer NumCSRWIndex;
integer NumCSRPostWIndex;
// logic CurrentInterruptForce;
logic [`XLEN-1:0] InstrCountW;
// -----------
// Error Macro
// -----------
`define ERROR \
errorCount +=1; \
$display("processed %0d instructions with %0d warnings", InstrCountW, warningCount); \
$stop;
// ------
// Macros
// ------
`define CSRwarn(CSR) \
begin \
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], CSR, ExpectedCSRArrayValueW[NumCSRPostWIndex]); \
if (CSR != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin \
$display("%tns, %d instrs: CSR %s = %016x, does not equal expected value %016x", $time, InstrCountW, ExpectedCSRArrayW[NumCSRPostWIndex], CSR, ExpectedCSRArrayValueW[NumCSRPostWIndex]); \
if(`DEBUG_TRACE >= 3) fault = 1; \
end \
end
`define checkEQ(NAME, VAL, EXPECTED) \
if(VAL != EXPECTED) begin \
$display("%tns, %d instrs: %s %x differs from expected %x", $time, InstrCountW, NAME, VAL, EXPECTED); \
if ((NAME == "PCW") || (`DEBUG_TRACE >= 2)) fault = 1; \
end
initial begin
data_file_all = $fopen({`LINUX_TEST_VECTORS,"all.txt"}, "r");
@ -149,16 +165,11 @@ module testbench();
force dut.hart.priv.ExtIntM = 0;
end
/* -----\/----- EXCLUDED -----\/-----
initial begin
CurrentInterruptForce = 1'b0;
end
-----/\----- EXCLUDED -----/\----- */
assign checkInstrM = dut.hart.ieu.InstrValidM & ~dut.hart.priv.trap.InstrPageFaultM & ~dut.hart.priv.trap.InterruptM & ~dut.hart.StallM;
// trapW will already be invalid in there was an InstrPageFault in the previous instruction.
assign checkInstrW = dut.hart.ieu.InstrValidW & ~dut.hart.StallW;
assign checkInstrW = dut.hart.ieu.InstrValidW & ~dut.hart.StallW; // trapW will already be invalid in there was an InstrPageFault in the previous instruction.
// Additonal W stage registers
flopenrc #(`XLEN) MemAdrWReg(clk, reset, dut.hart.FlushW, ~dut.hart.StallW, dut.hart.ieu.dp.MemAdrM, MemAdrW);
flopenrc #(`XLEN) WriteDataWReg(clk, reset, dut.hart.FlushW, ~dut.hart.StallW, dut.hart.WriteDataM, WriteDataW);
flopenrc #(`XLEN) PCWReg(clk, reset, dut.hart.FlushW, ~dut.hart.ieu.dp.StallW, dut.hart.ifu.PCM, PCW);
@ -177,7 +188,8 @@ module testbench();
if (checkInstrM) begin
// read 1 line of the trace file
matchCount = $fgets(line, data_file_all);
if(`DEBUG_TRACE > 1) $display("Time %t, line %x", $time, line);
if(`DEBUG_TRACE >= 5) $display("Time %t, line %x", $time, line);
// extract PC, Instr
matchCount = $sscanf(line, "%x %x %s", ExpectedPCM, ExpectedInstrM, textM);
//$display("matchCount %d, PCM %x ExpectedInstrM %x textM %x", matchCount, ExpectedPCM, ExpectedInstrM, textM);
@ -213,18 +225,14 @@ module testbench();
RegWriteM = ExpectedTokens[MarkerIndex];
matchCount = $sscanf(ExpectedTokens[MarkerIndex+1], "%d", ExpectedRegAdrM);
matchCount = $sscanf(ExpectedTokens[MarkerIndex+2], "%x", ExpectedRegValueM);
MarkerIndex += 3;
// parse memory address, read data, and/or write data
end else if(ExpectedTokens[MarkerIndex].substr(0, 2) == "Mem") begin
MemOpM = ExpectedTokens[MarkerIndex];
matchCount = $sscanf(ExpectedTokens[MarkerIndex+1], "%x", ExpectedMemAdrM);
matchCount = $sscanf(ExpectedTokens[MarkerIndex+2], "%x", ExpectedMemWriteDataM);
matchCount = $sscanf(ExpectedTokens[MarkerIndex+3], "%x", ExpectedMemReadDataM);
MarkerIndex += 4;
// parse CSRs, because there are 1 or more CSRs after the CSR token
// we check if the CSR token or the number of CSRs is greater than 0.
// if so then we want to parse for a CSR.
@ -235,29 +243,12 @@ module testbench();
end
matchCount = $sscanf(ExpectedTokens[MarkerIndex], "%s", ExpectedCSRArrayM[NumCSRM]);
matchCount = $sscanf(ExpectedTokens[MarkerIndex+1], "%x", ExpectedCSRArrayValueM[NumCSRM]);
MarkerIndex += 2;
// if we get an xcause with the interrupt bit set we must generate an interrupt as interrupts
// are imprecise. Forcing the trap at this time will allow wally to track what qemu does.
// the msb of xcause will be set.
// bits 1:0 select mode; 0 = user, 1 = superviser, 3 = machine
// bits 3:2 select the type of interrupt, 0 = software, 1 = timer, 2 = external
if(ExpectedCSRArrayM[NumCSRM].substr(1, 5) == "cause" && (ExpectedCSRArrayValueM[NumCSRM][`XLEN-1] == 1'b1)) begin
//what type?
ExpectedIntType = ExpectedCSRArrayValueM[NumCSRM] & 64'h0000_000C;
$display("%tns, %d instrs: CSR = %s. Forcing interrupt of cause = %x", $time, InstrCountW, ExpectedCSRArrayM[NumCSRM], ExpectedCSRArrayValueM[NumCSRM]);
forcedInterrupt = 1;
if(ExpectedIntType == 0) begin
force dut.hart.priv.SwIntM = 1'b1;
$display("Activate spoofed SwIntM");
end else if(ExpectedIntType == 4) begin
force dut.hart.priv.TimerIntM = 1'b1;
$display("Activate spoofed TimeIntM");
end else if(ExpectedIntType == 8) begin
force dut.hart.priv.ExtIntM = 1'b1;
$display("Activate spoofed ExtIntM");
end else forcedInterrupt = 0;
// match MIP to QEMU's because interrupts are imprecise
if(ExpectedCSRArrayM[NumCSRM].substr(0, 2) == "mip") begin
$display("%tns: Updating MIP to %x",$time,ExpectedCSRArrayValueM[NumCSRM]);
MIPexpected = ExpectedCSRArrayValueM[NumCSRM];
force dut.hart.priv.csr.genblk1.csri.MIP_REGW = MIPexpected;
end
NumCSRM++;
end
@ -268,12 +259,10 @@ module testbench();
force dut.hart.ieu.dp.ReadDataM = ExpectedMemReadDataM;
end
if(textM.substr(0,5) == "rdtime") begin
$display("%tns, %d instrs: Overwrite MTIME_CLINT on read of MTIME in memory stage.", $time, InstrCountW);
//$display("%tns, %d instrs: Overwrite MTIME_CLINT on read of MTIME in memory stage.", $time, InstrCountW);
force dut.uncore.clint.clint.MTIME = ExpectedRegValueM;
//dut.hart.ieu.dp.regf.wd3
end
end // if (checkInstrM)
end
end
// step 1: register expected state into the write back stage.
@ -320,38 +309,17 @@ module testbench();
ExpectedCSRArrayValueW[NumCSRWIndex] = ExpectedCSRArrayValueM[NumCSRWIndex];
end
end
// override on special conditions
#1;
// override on special conditions
if(~dut.hart.StallW) begin
if(textW.substr(0,5) == "rdtime") begin
$display("%tns, %d instrs: Releasing force of MTIME_CLINT.", $time, InstrCountW);
//$display("%tns, %d instrs: Releasing force of MTIME_CLINT.", $time, InstrCountW);
release dut.uncore.clint.clint.MTIME;
//release dut.hart.ieu.dp.regf.wd3;
end
if (ExpectedMemAdrM == 'h10000005) begin
//$display("%tns, %d instrs: releasing force of ReadDataM.", $time, InstrCountW);
release dut.hart.ieu.dp.ReadDataM;
end
// force interrupts to 0
if (forcedInterrupt) begin
forcedInterrupt = 0;
if(ExpectedIntType == 0) begin
force dut.hart.priv.SwIntM = 1'b0;
$display("Deactivate spoofed SwIntM");
end
else if(ExpectedIntType == 4) begin
force dut.hart.priv.TimerIntM = 1'b0;
$display("Deactivate spoofed TimeIntM");
end
else if(ExpectedIntType == 8) begin
force dut.hart.priv.ExtIntM = 1'b0;
$display("Deactivate spoofed ExtIntM");
end
end
end
end
end
@ -365,203 +333,56 @@ module testbench();
if (InstrCountW == waveOnICount) $stop;
// print progress message
if (InstrCountW % 'd100000 == 0) $display("Reached %d instructions", InstrCountW);
// check PCW
fault = 0;
if(PCW != ExpectedPCW) begin
$display("PCW: %016x does not equal ExpectedPCW: %016x", PCW, ExpectedPCW);
fault = 1;
end
// check instruction value
if(dut.hart.ifu.InstrW != ExpectedInstrW) begin
$display("InstrW: %x does not equal ExpectedInstrW: %x", dut.hart.ifu.InstrW, ExpectedInstrW);
fault = 1;
end
// check the number of instructions
if(dut.hart.priv.csr.genblk1.counters.genblk1.INSTRET_REGW != InstrCountW) begin
$display("%t, Number of instruction Retired = %d does not equal number of instructions in trace = %d", $time, dut.hart.priv.csr.genblk1.counters.genblk1.INSTRET_REGW, InstrCountW);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
if (`DEBUG_TRACE >= 1) begin
`checkEQ("PCW",PCW,ExpectedPCW)
`checkEQ("InstrW",dut.hart.ifu.InstrW,ExpectedInstrW)
`checkEQ("Instr Count",dut.hart.priv.csr.genblk1.counters.genblk1.INSTRET_REGW,InstrCountW)
#2; // delay 2 ns.
if(`DEBUG_TRACE > 2) begin
$display("Reg Write Address: %02d ? expected value: %02d", dut.hart.ieu.dp.regf.a3, ExpectedRegAdrW);
$display("RF[%02d]: %016x ? expected value: %016x", ExpectedRegAdrW, dut.hart.ieu.dp.regf.rf[ExpectedRegAdrW], ExpectedRegValueW);
if(`DEBUG_TRACE >= 5) begin
$display("%tns, %d instrs: Reg Write Address %02d ? expected value: %02d", $time, InstrCountW, dut.hart.ieu.dp.regf.a3, ExpectedRegAdrW);
$display("%tns, %d instrs: RF[%02d] %016x ? expected value: %016x", $time, InstrCountW, ExpectedRegAdrW, dut.hart.ieu.dp.regf.rf[ExpectedRegAdrW], ExpectedRegValueW);
end
if (RegWriteW == "GPR") begin
if (dut.hart.ieu.dp.regf.a3 != ExpectedRegAdrW) begin
$display("Reg Write Address: %02d does not equal expected value: %02d", dut.hart.ieu.dp.regf.a3, ExpectedRegAdrW);
fault = 1;
`checkEQ("Reg Write Address",dut.hart.ieu.dp.regf.a3,ExpectedRegAdrW)
$sprintf(name,"RF[%02d]",ExpectedRegAdrW);
`checkEQ(name, dut.hart.ieu.dp.regf.rf[ExpectedRegAdrW], ExpectedRegValueW)
end
if (dut.hart.ieu.dp.regf.rf[ExpectedRegAdrW] != ExpectedRegValueW) begin
$display("RF[%02d]: %016x does not equal expected value: %016x", ExpectedRegAdrW, dut.hart.ieu.dp.regf.rf[ExpectedRegAdrW], ExpectedRegValueW);
fault = 1;
end
end
if (MemOpW.substr(0,2) == "Mem") begin
if(`DEBUG_TRACE > 3) $display("\tMemAdrW: %016x ? expected: %016x", MemAdrW, ExpectedMemAdrW);
// always check address
if (MemAdrW != ExpectedMemAdrW) begin
$display("MemAdrW: %016x does not equal expected value: %016x", MemAdrW, ExpectedMemAdrW);
fault = 1;
end
// check read data
if(`DEBUG_TRACE >= 4) $display("\tMemAdrW: %016x ? expected: %016x", MemAdrW, ExpectedMemAdrW);
`checkEQ("MemAdrW",MemAdrW,ExpectedMemAdrW)
if(MemOpW == "MemR" || MemOpW == "MemRW") begin
if(`DEBUG_TRACE > 3) $display("\tReadDataW: %016x ? expected: %016x", dut.hart.ieu.dp.ReadDataW, ExpectedMemReadDataW);
if (dut.hart.ieu.dp.ReadDataW != ExpectedMemReadDataW) begin
$display("ReadDataW: %016x does not equal expected value: %016x", dut.hart.ieu.dp.ReadDataW, ExpectedMemReadDataW);
fault = 1;
if(`DEBUG_TRACE >= 4) $display("\tReadDataW: %016x ? expected: %016x", dut.hart.ieu.dp.ReadDataW, ExpectedMemReadDataW);
`checkEQ("ReadDataW",dut.hart.ieu.dp.ReadDataW,ExpectedMemReadDataW)
end else if(ExpectedTokens[MarkerIndex] == "MemW" || ExpectedTokens[MarkerIndex] == "MemRW") begin
if(`DEBUG_TRACE >= 4) $display("\tWriteDataW: %016x ? expected: %016x", WriteDataW, ExpectedMemWriteDataW);
`checkEQ("WriteDataW",ExpectedMemWriteDataW,ExpectedMemWriteDataW)
end
end
// check write data
else if(ExpectedTokens[MarkerIndex] == "MemW" || ExpectedTokens[MarkerIndex] == "MemRW") begin
if(`DEBUG_TRACE > 3) $display("\tWriteDataW: %016x ? expected: %016x", WriteDataW, ExpectedMemWriteDataW);
if (WriteDataW != ExpectedMemWriteDataW) begin
$display("WriteDataW: %016x does not equal expected value: %016x", WriteDataW, ExpectedMemWriteDataW);
fault = 1;
end
end
end
// check csr
//$display("%t, about to check csr, NumCSRW = %d", $time, NumCSRW);
for(NumCSRPostWIndex = 0; NumCSRPostWIndex < NumCSRW; NumCSRPostWIndex++) begin
/* -----\/----- EXCLUDED -----\/-----
if(`DEBUG_TRACE > 0) begin
$display("%t, NumCSRPostWIndex = %d, Expected CSR: %s = %016x", $time, NumCSRPostWIndex, ExpectedCSRArrayW[NumCSRPostWIndex], ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
-----/\----- EXCLUDED -----/\----- */
case(ExpectedCSRArrayW[NumCSRPostWIndex])
"mhartid": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MHARTID_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
"mhartid": `CSRwarn(dut.hart.priv.csr.genblk1.csrm.MHARTID_REGW)
"mstatus": `CSRwarn(dut.hart.priv.csr.genblk1.csrm.MSTATUS_REGW)
"mtvec": `CSRwarn(dut.hart.priv.csr.genblk1.csrm.MTVEC_REGW)
"mip": `CSRwarn(dut.hart.priv.csr.genblk1.csrm.MIP_REGW)
"mie": `CSRwarn(dut.hart.priv.csr.genblk1.csrm.MIE_REGW)
"mideleg":`CSRwarn(dut.hart.priv.csr.genblk1.csrm.MIDELEG_REGW)
"medeleg": `CSRwarn(dut.hart.priv.csr.genblk1.csrm.MEDELEG_REGW)
"mepc": `CSRwarn(dut.hart.priv.csr.genblk1.csrm.MEPC_REGW)
"mtval": `CSRwarn(dut.hart.priv.csr.genblk1.csrm.MTVAL_REGW)
"sepc": `CSRwarn(dut.hart.priv.csr.genblk1.csrs.SEPC_REGW)
"scause": `CSRwarn(dut.hart.priv.csr.genblk1.csrs.genblk1.SCAUSE_REGW)
"stvec": `CSRwarn(dut.hart.priv.csr.genblk1.csrs.STVEC_REGW)
"stval": `CSRwarn(dut.hart.priv.csr.genblk1.csrs.genblk1.STVAL_REGW)
endcase
end
if (dut.hart.priv.csr.genblk1.csrm.MHARTID_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MHARTID_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
if (fault == 1) begin
errorCount +=1;
$display("processed %0d instructions with %0d warnings", InstrCountW, warningCount);
$stop;
end
end
"mstatus": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MSTATUS_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if ((dut.hart.priv.csr.genblk1.csrm.MSTATUS_REGW) != (ExpectedCSRArrayValueW[NumCSRPostWIndex])) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MSTATUS_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"mtvec": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MTVEC_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrm.MTVEC_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MTVEC_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"mip": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MIP_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrm.MIP_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MIP_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"mie": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MIE_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrm.MIE_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MIE_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"mideleg": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MIDELEG_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrm.MIDELEG_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MIDELEG_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"medeleg": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MEDELEG_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrm.MEDELEG_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MEDELEG_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"mepc": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MEPC_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrm.MEPC_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MEPC_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"mtval": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MTVAL_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrm.MTVAL_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrm.MTVAL_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"sepc": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrs.SEPC_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrs.SEPC_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrs.SEPC_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"scause": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrs.genblk1.SCAUSE_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrs.genblk1.SCAUSE_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrs.genblk1.SCAUSE_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"stvec": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrs.STVEC_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrs.STVEC_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrs.STVEC_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
"stval": begin
if(`DEBUG_TRACE > 0) begin
$display("CSR: %s = %016x, expected = %016x", ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrs.genblk1.STVAL_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
end
if (dut.hart.priv.csr.genblk1.csrs.genblk1.STVAL_REGW != ExpectedCSRArrayValueW[NumCSRPostWIndex]) begin
$display("%t, CSR: %s = %016x, does not equal expected value %016x", $time, ExpectedCSRArrayW[NumCSRPostWIndex], dut.hart.priv.csr.genblk1.csrs.genblk1.STVAL_REGW, ExpectedCSRArrayValueW[NumCSRPostWIndex]);
if(!`DontHaltOnCSRMisMatch) fault = 1;
end
end
endcase // case (ExpectedCSRArrayW[NumCSRPostWIndex])
end // for (NumCSRPostWIndex = 0; NumCSRPostWIndex < NumCSRW; NumCSRPostWIndex++)
if (fault == 1) begin `ERROR end
end // if (`DEBUG_TRACE >= 1)
end // if (checkInstrW)
end // always @ (negedge clk)