From: "Alex Bennée" <firstname.lastname@example.org> To: Peter Maydell <email@example.com> Cc: "Huacai Chen" <firstname.lastname@example.org>, "Philippe Mathieu-Daudé" <email@example.com>, "QEMU Developers" <firstname.lastname@example.org> Subject: Re: Could we document exact steps for loongson3-virt in the manual? Date: Wed, 07 Apr 2021 09:37:36 +0100 [thread overview] Message-ID: <email@example.com> (raw) In-Reply-To: <CAFEAcA8V94ac+UNcP6nKfNJQAxSzeY_dbpZx1tKa0xnXHhekEA@mail.gmail.com> Peter Maydell <firstname.lastname@example.org> writes: > On Tue, 6 Apr 2021 at 14:23, Alex Bennée <email@example.com> wrote: >> >> Hi, >> >> I was trying to bootstrap a Loongson3 Debian image but ran into some >> roadblocks. Philippe pointed me at: >> >> https://firstname.lastname@example.org/msg768848.html >> >> which gives a bit of detail but elides over details such as how to >> handle block devices. AFAICT it should support virtio-blk although maybe >> Debian bullseye doesn't support the target, it's hard to say: >> >> ./qemu-system-mips64el -M loongson3-virt -m 4096 -nographic >> -blockdev >> driver=raw,node-name=hd0,discard=unmap,file.driver=host_device,file.filename=/dev/zvol/hackpool-0/debian-bullseye-mips64le >> -device virtio-blk,drive=hd0 -kernel ./vmlinuz-5.9.0-4-loongson-3 >> -initrd initrd.gz -append "root=/dev/sda1 console=tty0 nokaslr" >> >> Gets as far as: >> >> [ 0.008641] printk: console [tty0] enabled >> [ 0.009507] printk: bootconsole [early0] disabled >> >> and then just goes silent. > > Oddly enough somebody on stackoverflow had the same problem for > a different board (malta) the other day: > https://stackoverflow.com/questions/66904366/qemu-system-mips-stuck-after-console-tty0-enabled/66910192 > > As Jiaxun says, the problem is that your kernel command line says "send the > console output to the virtual console on the graphics device (tty0)" but your > QEMU command line is using a serial console and not trying to use graphics. > So as soon as the kernel gets to the point where it can honour your request > it disables the early-boot console and enables tty0 and then you don't > see anything any more :-) Doh - should have spotted that. I guess the -nographic doesn't prompt the kernel enough to warn about switching to a non-existent graphics device. I can get to the installer now although it fails later failing to find kernel modules. I suspect this is a Debian problem with a mismatch between installer and archives. > > thanks > -- PMM -- Alex Bennée
prev parent reply other threads:[~2021-04-07 8:41 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-06 13:06 Alex Bennée 2021-04-07 3:47 ` Jiaxun Yang 2021-04-07 7:47 ` Peter Maydell 2021-04-07 8:37 ` Alex Bennée [this message]
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