Le 08/03/2021 à 23:47, Philippe Mathieu-Daudé a écrit : > Hi Laurent, > > On 3/8/21 10:24 PM, Laurent Vivier wrote: >> The Quadra 800 machine is very limited to run linux, it manages >> only 1 GiB of memory and only some specific interfaces. >> >> The Virtual M68k Machine is based on Goldfish interfaces defined by Google >> for Android simulator. It uses Goldfish-rtc (timer and RTC), >> Goldfish-pic (PIC) and Goldfish-tty (for serial port and early tty). >> >> https://android.googlesource.com/platform/external/qemu/+/master/docs/GOLDFIS= >> H-VIRTUAL-HARDWARE.TXT >> >> The machine is created with 128 virtio-mmio busses, and they can >> be used to add serial console, GPU, disk, NIC, HID, ... >> >> This series re-use the goldfish-rtc implemented for RISCV, and >> adds the two others based on the goldfish specs, the kernel driver >> and android simulator ones. >> >> The machine can manage up to 3.2 GiB of memory, not because of an hardware >> limitation but because the kernel crashes after this value. >> >> Simply configure qemu with: >> >> .../configure --target-list=3Dm68k-softmmu >> >> To run the machine you need a modified kernel you can find here: >> >> https://github.com/vivier/linux/tree/m68k-virt >> >> You need to compile the kernel with: >> >> make virt_defconfig >> make vmlinux >> >> The disk must be installed using the q800 machine because the debian >> installer >> doesn't want to be used with a kernel that is not the one on the ISO. >> >> And then you can run the machine with something like: >> >> qemu-system-m68k -M virt \ >> -m 3399672K \ >> -chardev stdio,signal=3Doff,mux=3Don,id=3Dchar0 \ >> -mon chardev=3Dchar0,mode=3Dreadline \ >> -kernel vmlinux \ >> -append "console=3Dhvc0 root=3D/dev/vda2" \ >> -blockdev node-name=3Dsystem,driver=3Dfile,filename=3Ddebian-10.0.qcow2 \ >> -blockdev node-name=3Ddrive0,driver=3Dqcow2,file=3Dsystem \ >> -device virtio-blk-device,drive=3Ddrive0 \ >> -serial chardev:char0 \ >> -device virtio-net-device,netdev=3Dhostnet0 \ >> -netdev bridge,id=3Dhostnet0,br=3Dvirbr0 \ >> -device virtio-rng-device \ >> -device virtio-serial-device \ >> -device virtio-gpu-device \ >> -device virtconsole,chardev=3Dchar0 \ >> -device virtio-keyboard-device \ >> -device virtio-mouse-device >> >> if you want to use Goldfish-tty for the console rather than virtconsole, you >> can add "console=3DttyGF". >> >> To start the debian-installer, you can try by adding: >> >> -device virtio-scsi-device \ >> -blockdev >> node-name=3Ddebian10,driver=3Dfile,filename=3Ddebian-10.0.0-m68k-= >> NETINST-1.iso \ >> -blockdev node-name=3Dcdrom0,driver=3Draw,file=3Ddebian10 \ >> -device scsi-cd,drive=3Dcdrom0 \ >> -initrd installer-m68k/20200315/images/cdrom/initrd.gz >> >> ISO: >> https://cdimage.debian.org/cdimage/ports/snapshots/2020-10-12/debian-= >> 10.0.0-m68k-NETINST-1.iso >> initrd: >> https://cdimage.debian.org/cdimage/ports/debian-installer/2020-10-12/= >> m68k/debian-installer-images_20200315_m68k.tar.gz >> >> v6: >> m68k-virt-ctrl: >> Renamed to virt-ctrl to be generic >> Add a simple specs document > > Thanks for this document! Series LGTM. > > I tested doing: > > qemu$ docker run -it --rm -v $PWD:$PWD -w $PWD -v /tmp:/tmp -u 0 > --network host registry.gitlab.com/qemu-project/qemu/qemu/debian-m68k-cross > # apt-get update > # apt-get install flex bison libssl-dev > # git clone https://github.com/vivier/linux.git > # cd linux > # git checkout m68k-virt > # make O=build ARCH=m68k CROSS_COMPILE=m68k-linux-gnu- virt_defconfig > # make O=build ARCH=m68k CROSS_COMPILE=m68k-linux-gnu- vmlinux -j8 > > [ 0.000000] Linux version 5.11.0-rc5-00002-g8a00b8b1edb (root@x1w) > (m68k-linux-gnu-gcc (Debian 8.3.0-2) 8.3.0, GNU ld (GNU Binutils for > Debian) 2.31.1) #1 Mon Mar 8 22:27:19 UTC 2021 > > I also tested the Goldfish-tty: > > [ 1.390000] printk: console [ttyGF0] enabled > [ 1.390000] printk: console [ttyGF0] enabled > [ 1.390000] printk: bootconsole [early_gf_tty0] disabled > [ 1.390000] printk: bootconsole [early_gf_tty0] disabled > > So: > Tested-by: Philippe Mathieu-Daudé <f4...@amsat.org>
Thank you Philippe. > Don't you want to share a preinstalled qcow2 image like Aurelien? > > https://people.debian.org/~aurel32/qemu/ For the moment, my next move is to have the kernel changes merged. But I have a qcow2 available here: http://vivier.eu/debian-10.0.qcow2 > > Also, do you plan to add functional testing later? Yes, except if someone else does it before me :) Thanks, Laurent
