Problems with provided toolchain due to geographical restrictions

[juampe]

For the provided toolchain URL, right now, is not posible to register and download, (AFAIK) from out of china phone number. https://occ.t-head.cn/community/download?id=3948120165480468480

With an spanish phone number (+34XXXXXXXXX), I cannot register an account to download the toolchain. I tried with my dingchat account, but again the form asked for a +86 phone number

Sadly the RiscV toolchain provided with Ubuntu does not support newlib-nano

/openc910/smart_run/work#  make -s clean && make -s all CPU_ARCH_FLAG_0=c910  ENDIAN_MODE=little-endian CASENAME=hello_world FILE=hello_world
riscv64-unknown-elf-gcc: fatal error: cannot read spec file 'nano.specs': No such file or directory

¿Must I build my own RiscV tool chain (with newlib-nano)?

[smtdta]

Hi , can you provide pointers to which tool chain are you using ?

[smtdta]

Have you tried with this

https://github.com/T-head-Semi/xuantie-gnu-toolchain ?

[juampe]

Hi @smtdta , thanks a lot. I'm building my own tookchain from standard GNU with newlib, but the resulting tookchain lacks of "xtheadc" ISA extension https://github.com/juampe/toolchain -> make build-riscv64

~/openc910/smart_run/work# make -s all CPU_ARCH_FLAG_0=c910  ENDIAN_MODE=little-endian CASENAME=hello_world FILE=hello_world
Assembler messages:
Error: x ISA extension `xtheadc' must be set with the versions
make: *** [Makefile:67: core_lsu.o] Error 1

Now I'll try with the repo provided https://github.com/juampe/toolchain -> make build-xuantie

[smtdta]

Good to know Sir ..

I'm a newbie and tried to run the basic tests provided by them like ISA_RV32F under the case list .

my tool chain is std riscv gnu tool chain in linux(RHEL) for rv32 . I tried giving the path of my tool chain in example_setup.csh and sourcing it but not able to run .

https://github.com/riscv-collab/riscv-gnu-toolchain

Highly appreciate if could you pl help me out on that .

[juampe]

Hi @smtdta, now I built my own xuantie toolchain, with the recomended T-Head sources. Forget "bizarre setup scripts" and use bash and exports provided in this example run. Patch 'mk' file with 'sed' to avoid shell 'fd' error. With this configuration I can run the "hello_world". Those are the steps:

Build xuantie T-Head toolchain

~# sudo apt-get -y install git make curl perl buildah iverilog
~# git clone https://github.com/juampe/toolchain.git
~# cd toolchain
~# make build-xuantie
# The toolchain built is in the repo directory
~# sudo tar -C / -xvjf repo/toolchain-gcc-elf-newlib-xtheadc-riscv64-11.2.0.tbz2
~# /opt/toolchain/riscv64/bin/riscv64-unknown-elf-gcc --version
riscv64-unknown-elf-gcc (GCC) 10.2.0

Build git verilator (optional for make runcase CASE=hello_world SIM=verilator)

~# cd
~# git clone https://github.com/verilator/verilator
~# sudo apt-get -y install git perl python3 make autoconf g++ flex bison ccache libgoogle-perftools-dev numactl perl-doc libfl2  libfl-dev zlib1g zlib1g-dev
~# cd verilator
~# git checkout master
~# autoconf
~# ./configure
~# make
~# make test
~# make install
~# verilator --version
Verilator 4.215 devel rev v4.214-28-g185e5d8f

Make a runcase with iverilog

~# cd
~# git clone https://github.com/T-head-Semi/openc910.git
~# cd openc910/smart_run
~# export CODE_BASE_PATH=~/openc910/C910_RTL_FACTORY
~# export TOOL_EXTENSION=/opt/toolchain/riscv64/bin
~# mkdir -p work
~# make runcase CASE=hello_world 
make[1]: Entering directory '/root/openc910/smart_run'
make[1]: Leaving directory '/root/openc910/smart_run'
  [THead-smart] Compiling smart now ...
  [THead-smart] SIM = iverilog
  Toolchain path: /opt/toolchain/riscv64/bin
/bin/sh: 1: Syntax error: Bad fd number
make[2]: *** [setup/smart_cfg.mk:98: hello_world_build] Error 2
make[1]: *** [Makefile:175: buildcase] Error 2
make: *** [Makefile:196: runcase] Error 2

Fix shell (bash) where it fails (smart_cfg.mk:98)

~# sed -i setup/smart_cfg.mk -e 's/>&/>/'
~# make runcase CASE=hello_world
make[1]: Entering directory '/root/openc910/smart_run'
make[1]: Leaving directory '/root/openc910/smart_run'
  [THead-smart] Compiling smart now ... 
  [THead-smart] SIM = iverilog
  Toolchain path: /opt/toolchain/riscv64/bin
cd ./work && vvp xuantie_core.vvp 
intc.c: In function 'ck_intc_init':
intc.c:19:34: warning: initialization of 'int *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
   19 | #define APB_BASE                 0x10000000
      |                                  ^~~~~~~~~~
intc.c:25:14: note: in expansion of macro 'APB_BASE'
   25 |  int *picr = APB_BASE;
      |              ^~~~~~~~
intc.c:20:34: warning: initialization of 'int *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
   20 | #define INTC_BASE                0x10010000
      |                                  ^~~~~~~~~~
intc.c:29:22: note: in expansion of macro 'INTC_BASE'
   29 |         int *piser = INTC_BASE + 0x10;
      |                      ^~~~~~~~~
vtimer.c: In function 'sim_end':
vtimer.c:31:12: warning: assignment to 'int *' from 'unsigned int' makes pointer from integer without a cast [-Wint-conversion]
   31 |   END_ADDR = 0xA001FF48;
      |            ^
vtimer.c:34:13: warning: unsigned conversion from 'long int' to 'unsigned int' changes value from '18324075042' to '1144205858' [-Woverflow]
   34 |   END_DATA= 0x444333222;
      |             ^~~~~~~~~~~
        ********* Init Program *********
        ********* Wipe memory to 0 *********
        ********* Read program *********
WARNING: ../logical/tb/tb.v:136: $readmemh: Standard inconsistency, following 1364-2005.
WARNING: ../logical/tb/tb.v:137: $readmemh: Standard inconsistency, following 1364-2005.
        ********* Load program to memory *********

Hello Friend!
Welcome to T-HEAD World!

a is 1!
b is 2!
c is 0!
!!! PASS !!!after ASM c is changed to 3!
**********************************************
*    simulation finished successfully        *
**********************************************

[juampe]

Provided a functional openc910 starter pack. https://github.com/juampe/toolchain