gaohy1003 / biriscv-sw

biRISC-V - 32-bit dual issue RISC-V CPU Software Environment

biRISC-V - 32-bit dual issue RISC-V CPU Software Environment

biRISC-V is a 32-bit dual issue RISC-V CPU core, which can be obtained from here,

github: http://github.com/ultraembedded/biriscv

This repo is for the software code running in the biRISC-V verilator simulation enviroment. It includes coremark and dhrystone benchmarks.

Notes: The coremark and dhrystone reuquire a memory size of 256Kb. The original biRISC-V TCM is only 64Kb. In order to run benchmarks in TCM, I configured it to 256Kb.

Geting Started

git clone --recursive https://github.com/kuopinghsu/biriscv.git

The SystemC and Verilator must be installed properly in system.

Building toolchains

Install RISCV toolchains.

# Ubuntu packages needed:
sudo apt install autoconf automake autotools-dev curl libmpc-dev \
    libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo \
    gperf libtool patchutils bc zlib1g-dev git libexpat1-dev
    
git clone --recursive https://github.com/riscv/riscv-gnu-toolchain
cd riscv-gnu-toolchain

mkdir build; cd build
../configure --prefix=/opt/riscv --enable-multilib
make -j$(nproc)

Install Verilator & SystemC

# Ubuntu packages needed:
sudo apt-get install verilator

# install systemc
wget https://www.accellera.org/images/downloads/standards/systemc/systemc-2.3.3.tar.gz
tar xzf systemc-2.3.3.tar.gz
cd systemc-2.3.3
mkdir build && cd build
../configure --prefix=/usr/local
make
sudo make install

# add the env into .bashrc
export SYSTEMC_HOME=/usr/local/systemc-2.3.3
export SYSTEMC_INCLUDE=$SYSTEMC_HOME/include
export SYSTEMC_LIBDIR=$SYSTEMC_HOME/lib-linux64

export LD_LIBRARY_PATH=$SYSTEMC_LIBDIR:$LD_LIBRARY_PATH

Running Example

$ make hello
$ make coremark
$ make dhrystone

To run benchmarks in TCM, running the following commands.

$ make tcm=1 coremark
$ make tcm=1 dhrystone

Coremark benchmark running with code and data in external memories

This is the results of running coremark in external memory using gcc-10.2.0.

        SystemC 2.3.3-Accellera --- May 18 2021 20:21:23
        Copyright (c) 1996-2018 by all Contributors,
        ALL RIGHTS RESERVED
Running: ../../../sw/coremark/coremark.elf
Memory: 0x80000000 - 0x8001d3d7 (Size=116KB) [.text]
Memory: 0x8001d3d8 - 0x8001d413 (Size=0KB) [.eh_frame]
Memory: 0x8001d418 - 0x8001f2fb (Size=7KB) [.data]
Memory: 0x8001f2fc - 0x8002334f (Size=16KB) [.bss]

Info: (I702) default timescale unit used for tracing: 1 ns (sysc_wave.vcd)
2K performance run parameters for coremark.
CoreMark Size    : 666
Total ticks      : 1112886
Total time (secs): 0.011129
Iterations/Sec   : 359.425853
Iterations       : 4
Compiler version : GCC10.2.0
Compiler flags   : -O2 -march=rv32im -mabi=ilp32 -nostartfiles -nostdlib -L../common -DPERFORMANCE_RUN=1 -fno-common -funroll-loops -finline-functions -falign-functions=16 -falign-jumps=4 -falign-loops=4 -finline-limit=1000 -fno-if-conversion2 -fselective-scheduling -fno-tree-dominator-opts -fno-reg-struct-return -fno-rename-registers --param case-values-threshold=8 -fno-crossjumping -freorder-blocks-and-partition -fno-tree-loop-if-convert -fno-tree-sink -fgcse-sm -fno-strict-overflow   -lc -lm -lgcc -lsys -T ../common/default.ld
Memory location  : STACK
seedcrc          : 0xe9f5
[0]crclist       : 0xe714
[0]crcmatrix     : 0x1fd7
[0]crcstate      : 0x8e3a
[0]crcfinal      : 0x9f95
Correct operation validated. See README.md for run and reporting rules.
CoreMark 1.0 : 359.425853 / GCC10.2.0 -O2 -march=rv32im -mabi=ilp32 -nostartfiles -nostdlib -L../common -DPERFORMANCE_RUN=1 -fno-common -funroll-loops -finline-functions -falign-functions=16 -falign-jumps=4 -falign-loops=4 -finline-limit=1000 -fno-if-conversion2 -fselective-scheduling -fno-tree-dominator-opts -fno-reg-struct-return -fno-rename-registers --param case-values-threshold=8 -fno-crossjumping -freorder-blocks-and-partition -fno-tree-loop-if-convert -fno-tree-sink -fgcse-sm -fno-strict-overflow   -lc -lm -lgcc -lsys -T ../common/default.ld / STACK
CoreMark/MHz: 3.594259
TB: Aborted at 14088860 ns

Dhrystone benchmark running with code and data in external memories

This is the results of running dhrystone in external memory using gcc-10.2.0.

        SystemC 2.3.3-Accellera --- May 18 2021 20:21:23
        Copyright (c) 1996-2018 by all Contributors,
        ALL RIGHTS RESERVED
Running: ../../../sw/dhrystone/dhrystone.elf
Memory: 0x80000000 - 0x80015387 (Size=84KB) [.text]
Memory: 0x80015388 - 0x800153c3 (Size=0KB) [.eh_frame]
Memory: 0x800153c8 - 0x80017123 (Size=7KB) [.data]
Memory: 0x80017124 - 0x8001d967 (Size=26KB) [.bss]

Info: (I702) default timescale unit used for tracing: 1 ns (sysc_wave.vcd)

Dhrystone Benchmark, Version 2.1 (Language: C)

Program compiled without 'register' attribute

Please give the number of runs through the benchmark: 
Execution starts, 100 runs through Dhrystone
Execution ends

Final values of the variables used in the benchmark:

Int_Glob:            5
        should be:   5
Bool_Glob:           1
        should be:   1
Ch_1_Glob:           A
        should be:   A
Ch_2_Glob:           B
        should be:   B
Arr_1_Glob[8]:       7
        should be:   7
Arr_2_Glob[8][7]:    110
        should be:   Number_Of_Runs + 10
Ptr_Glob->
  Ptr_Comp:          -2147378832
        should be:   (implementation-dependent)
  Discr:             0
        should be:   0
  Enum_Comp:         2
        should be:   2
  Int_Comp:          17
        should be:   17
  Str_Comp:          DHRYSTONE PROGRAM, SOME STRING
        should be:   DHRYSTONE PROGRAM, SOME STRING
Next_Ptr_Glob->
  Ptr_Comp:          -2147378832
        should be:   (implementation-dependent), same as above
  Discr:             0
        should be:   0
  Enum_Comp:         1
        should be:   1
  Int_Comp:          18
        should be:   18
  Str_Comp:          DHRYSTONE PROGRAM, SOME STRING
        should be:   DHRYSTONE PROGRAM, SOME STRING
Int_1_Loc:           5
        should be:   5
Int_2_Loc:           13
        should be:   13
Int_3_Loc:           7
        should be:   7
Enum_Loc:            1
        should be:   1
Str_1_Loc:           DHRYSTONE PROGRAM, 1'ST STRING
        should be:   DHRYSTONE PROGRAM, 1'ST STRING
Str_2_Loc:           DHRYSTONE PROGRAM, 2'ND STRING
        should be:   DHRYSTONE PROGRAM, 2'ND STRING

Number_Of_Runs: 100
User_Time: 24960 cycles
Dhrystones_Per_Second_Per_MHz: 4006
DMIPS_Per_MHz: 2.280
TB: Aborted at 1655460 ns

Benchmark scores

This is the summaries obtained using different compiler versions.

In External Memory	gcc-7.2.0	gcc-8.3.0	gcc-9.2.0	gcc-10.2.0	gcc-11.1.0
DMIPS/MHz	2.228	2.244	2.292	2.280	2.269
CoreMark/MHz	4.059887	4.08323	3.592209	3.594259	3.978821

In TCM	gcc-7.2.0	gcc-8.3.0	gcc-9.2.0	gcc-10.2.0	gcc-11.1.0
DMIPS/MHz	2.346	2.349	2.389	2.400	2.383
CoreMark/MHz	4.142030	4.161448	3.649139	3.668722	4.052968