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Re: Emulation for riscv
Re: Emulation for riscv
Wed, 13 Jan 2021 16:01:45 -0800
On Fri, Nov 6, 2020 at 2:36 AM Alex Bennée <email@example.com> wrote:
> Palmer Dabbelt <firstname.lastname@example.org> writes:
> > On Thu, 22 Oct 2020 17:56:38 PDT (-0700), email@example.com wrote:
> >> On Thu, Oct 22, 2020 at 4:58 PM Moises Arreola <firstname.lastname@example.org>
> >> wrote:
> >>> Hello everyone, my name is Moses and I'm trying to set up a VM for a
> >>> risc-v processor, I'm using the Risc-V Getting Started Guide and on the
> >>> final step I'm getting an error while trying to launch the virtual
> >>> machine using the cmd:
> >> Hello,
> >> Please don't use the RISC-V Getting Started Guide. Pretty much all of
> >> the information there is out of date and wrong. Unfortunately we are
> >> unable to correct it.
> >> The QEMU wiki is a much better place for information:
> >> https://wiki.qemu.org/Documentation/Platforms/RISCV
> > Ya, everything at riscv.org is useless. It's best to stick to the open
> > source
> > documentation, as when that gets out of date we can at least fix it. Using
> > a
> > distro helps a lot here, the wiki describes how to run a handful of popular
> > ones that were ported to RISC-V early but if your favorite isn't on the list
> > then it may have its own documentation somewhere else.
> Even better if you could submit some .rst pages for QEMU's git:
> docs/system/riscv/virt.rst (and maybe the other models)
> then we could improve the user manual where RiscV is currently a little
> under-represented. A number of the systems have simple example command
> lines or explain the kernel support needed for the model.
Thanks for pointing that out Alex. Bin has sent some patches for this
so RISC-V should have a presence soon.
> >>> sudo qemu-system-riscv64 -nographic -machine virt \
> >>> -kernel linux/arch/riscv/boot/Image -append "root=/dev/vda ro
> >>> console=ttyS0" \
> >>> -drive file=busybox,format=raw,id=hd0 \
> >>> -device virtio-blk-device,drive=hd0
> >>> But what I get in return is a message telling me that the file I gave
> >>> wasn't the right one, the actual output is:
> >>> qemu-system-riscv64: -drive file=busybox,format=raw,id=hd0: A regular
> >>> file was expected by the 'file' driver, but something else was given
> >>> And I checked the file busybox with de cmd "file" and got the following :
> >>> busybox: ELF 64-bit LSB executable, UCB RISC-V, version 1 (SYSV),
> >>> dynamically linked, interpreter /lib/ld-linux-riscv64-lp64d.so.1, for
> >>> GNU/Linux 4.15.0, stripped
> >> That looks like an ELF, which won't work when attached as a drive.
> >> How are you building this rootFS?
> >> Alistair
> >>> So I was wondering if the error message was related to qemu.
> >>> Thanks in advance for answering any suggestions are welcome
> Alex Bennée
- Re: Emulation for riscv,
Alistair Francis <=