franzflasch/linux_for_riscv_em

Scripts to automate building linux images for my emulator riscv_em

linux_for_riscv_em's Issues

Linux 32 bit build issue

I seem to have an issue building the Linux 32 bit payload on Ubuntu 21.10:

nico@lenovo:~/perso/git/linux_for_riscv_em$ ./riscv_em_rv32_mmu_linux.sh  
...
>>> host-m4 1.4.18 Building
PATH="/home/nico/perso/git/linux_for_riscv_em/output_mmu_rv32/buildroot-2021.02.1/output/host/bin:/home/nico/perso/git/linux_for_riscv_em/output_mmu_rv32/buildroot-2021.02.1/output/host/sbin:~/bin:/home/nico/Downloads/clang+llvm-12.0.0-x86_64-linux-gnu-ubuntu-20.04/bin:~/bin:/home/nico/Downloads/clang+llvm-12.0.0-x86_64-linux-gnu-ubuntu-20.04/bin:/home/nico/.cargo/bin:/home/nico/.local/bin:/home/nico/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/nico/perso/git/riscv-gnu-toolchain/the_install/bin:/home/nico/perso/git/vade:/home/nico/perso/git/riscv-gnu-toolchain/the_install/bin" PKG_CONFIG="/home/nico/perso/git/linux_for_riscv_em/output_mmu_rv32/buildroot-2021.02.1/output/host/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG_LIBDIR="/home/nico/perso/git/linux_for_riscv_em/output_mmu_rv32/buildroot-2021.02.1/output/host/lib/pkgconfig:/home/nico/perso/git/linux_for_riscv_em/output_mmu_rv32/buildroot-2021.02.1/output/host/share/pkgconfig"  /usr/bin/make   -C /home/nico/perso/git/linux_for_riscv_em/output_mmu_rv32/buildroot-2021.02.1/output/build/host-m4-1.4.18/
/usr/bin/make  all-recursive
Making all in .
make[4]: Nothing to be done for 'all-am'.
Making all in examples
make[4]: Nothing to be done for 'all'.
Making all in lib
  GEN      alloca.h
  GEN      configmake.h
  GEN      c++defs.h
  GEN      arg-nonnull.h
  GEN      warn-on-use.h
  GEN      unused-parameter.h
  GEN      limits.h
  GEN      sys/types.h
  GEN      fcntl.h
  GEN      locale.h
  GEN      langinfo.h
  GEN      math.h
  GEN      signal.h
  GEN      spawn.h
  GEN      stdio.h
  GEN      stdlib.h
  GEN      string.h
  GEN      sys/stat.h
  GEN      sys/time.h
  GEN      sys/wait.h
  GEN      time.h
  GEN      unistd.h
  GEN      wchar.h
  GEN      wctype.h
/usr/bin/make  all-am
  CC       binary-io.o
  CC       gl_avltree_oset.o
  CC       c-ctype.o
  CC       c-stack.o
  CC       c-strcasecmp.o
  CC       c-strncasecmp.o
  CC       clean-temp.o
  CC       cloexec.o
  CC       close-stream.o
  CC       closein.o
  CC       closeout.o
  CC       dirname.o
  CC       basename.o
  CC       dirname-lgpl.o
  CC       basename-lgpl.o
  CC       stripslash.o
  CC       execute.o
  CC       exitfail.o
In file included from /usr/include/signal.h:328,
                 from ./signal.h:52,
                 from c-stack.c:49:
c-stack.c:55:26: error: missing binary operator before token "("
   55 | #elif HAVE_LIBSIGSEGV && SIGSTKSZ < 16384
      |                          ^~~~~~~~
  CC       fatal-signal.o
  CC       fd-hook.o
make[5]: *** [Makefile:1915: c-stack.o] Error 1
make[5]: *** Waiting for unfinished jobs....
  CC       fd-safer-flag.o
make[4]: *** [Makefile:1674: all] Error 2
make[3]: *** [Makefile:1572: all-recursive] Error 1
make[2]: *** [Makefile:1528: all] Error 2
make[1]: *** [package/pkg-generic.mk:250: /home/nico/perso/git/linux_for_riscv_em/output_mmu_rv32/buildroot-2021.02.1/output/build/host-m4-1.4.18/.stamp_built] Error 2
make: *** [Makefile:84: _all] Error 2

Do you have an idea of what's happening or something I missed ?
Note that I didn't follow your first step as I already had a riscv32 (rv32g) toolchain installed according to this doc:
https://github.com/nsauzede/myrv
Maybe the error actually comes from the alternate riscv toolchain ?

scripts/Kconfig.include:39: compiler 'riscv32-linux-gnu-gcc' not found

Links to toolchain collections are broken

Hi,
I've tried the two links for the RISCV32 and RISCV64 toolchain zip archives, and they are both broken. The error message is:

Error 404 – Not Found
GitHub produced an error for the download of artifact #359688336.
Usually this means that the artifact has expired (>90 days).

Greetings, Hans-Georg

fw_payload.bin does not display any output in riscv_em

I got this to build, but when I run the payload bin in riscv_em, it just sits there with no output no matter how long I wait. I'm not sure what the issue could be. Do you have a known working fw_payload.bin for RV32 MMU that I could try?

Building and dtc, dtb

Hi!

I compiled the firmware and emulator. What is dtc? I don't know how to build the dtb file.

fw_payload.bin doesn't exist after running the rv32 linux script

Ran the script apparently successfully.

output_mmu_rv32/opensbi/build/platform/generic/firmware/fw_payload.bin

This file doesn't exist. In fact, the whole opensbi folder doesn't exist. Any ideas? Thanks.

riscv32 toolchain is already included in the buildroot?

I have tried to set PATH to linux_for_riscv_em/output_mmu_rv32/buildroot/output/host/bin/, I built the Linux kernel and it runs successfully in your emulator.

I think buildroot has built the toolchain already, so there is no need to download your pre-built binaries from https://github.com/franzflasch/gcc-build-tools. Should we mention this in the README?