QEMU 4.1 and RISC-V

[Li-Wen Hsu]

On Sun, Sep 29, 2019 at 10:48 PM Mitchell Horne <mhorne at freebsd.org> wrote:
>
>
> On Sun, Sep 29, 2019, 15:17 Li-Wen Hsu <lwhsu at freebsd.org> wrote:
>>
>> I found that RISC-V test started failing recently:
>> https://ci.freebsd.org/job/FreeBSD-head-riscv64-test/
>>
>> After some checking, I found the issue is our bbl image cannot boot
>> with this command:
>>
>> qemu-system-riscv64 -nographic -m 2048M -kernel ./bbl
>>
>> in QEMU 4.1, while 3.1 and 4.0 are fine.  I've switched the QEMU
>> version used in that job to 4.0, but I think it would be best if we
>> can find the root cause is in FreeBSD or QEMU.
>>
>> Can anyone also help on this?
>
>
> Hi Li-Wen,
>
> I can take a look in the coming week if you're okay with the workaround for the time being. Locally
> I've had no issue running bbl with qemu 4.1 but perhaps there's something more specific that the
> CI script is doing.
>
> I'm hoping we will soon be able to replace bbl with the more actively maintained OpenSBI firmware.
> I have some pending changes that will allow us to boot FreeBSD with it, and after that I'd like to
> create ports for both bootloaders, which I hope will make the CI setup a little simpler and less fragile
> than building bbl currently is.

Thanks very much, Mitchell,

Let's narrow down the scope, are you using the qemu-devel pkg from
official repository or building by yourself?

And can you try this bbl image?
https://artifact.ci.freebsd.org/snapshot/head/r352870/riscv/riscv64/bbl.xz

Best,
Li-Wen