Ports/riscv64/QEMU: Difference between revisions

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QEMU, starting with version 6.0, include OpenSBI firmware. If you have an older QEMU version, follow the instructions to obtain and use the firmware below.
Some older ALT images for QEMU include a VNC server that is used for system setup and graphics (see [[Regular/riscv64#VNC]] for more details). To access that server, it's convenient to forward port 5900. The necessary parameters for that are included into QEMU command lines below.
== QEMU 6.0+ ==
QEMU 6.0 virtual machines with kernel 5.14+ have graphis (virtuo-gpu) and input (virtio-keyboard and virtio-mouse) working.
Here are the steps to start a riscv64 virtual machine:
'''Step 0''': Install QEMU with riscv64 support. If your host system is running ALT, you need [http://sisyphus.ru/en/srpm/Sisyphus/qemu qemu-system-riscv-core package]:
  apt-get install qemu-system-riscv-core
On Ubuntu, riscv64 emulation is part of <tt>qemu-system-misc</tt>.
'''Step 1''':  Download the recent version of [https://packages.altlinux.org/ru/sisyphus/srpms/u-boot-qemu u-boot-qemu for riscv64]. You can use the riscv64 link from https://packages.altlinux.org/ru/sisyphus/srpms/u-boot-qemu/rpms.
From the downloaded package, extract <tt>/usr/share/u-boot/qemu-riscv64_smode/u-boot.bin</tt>. For example:
  rpm2cpio u-boot-qemu-*riscv64.rpm | cpio -vi --to-stdout './usr/share/u-boot/qemu-riscv64_smode/u-boot.bin' > u-boot.bin
'''Step 2''':  Now you can start a virtual machine via the following commands:


{{Stub}}


== Old QEMU (pre-6.0) ==
<source lang="shell">
$ IMAGE=<path to riscv64 image in img or qcow2 format>
$ UBOOT=<path to u-boot.bin from step 1>
$ qemu-system-riscv64 \
          -nographic -m 2G  -machine virt -kernel "$UBOOT" \
          -smp cpus=4 \
          -drive file=$IMAGE,id=hd0 -device virtio-blk-device,drive=hd0  \
          -netdev user,id=eth0,hostfwd=tcp::5900-:5900 -device virtio-net-device,netdev=eth0 \
          -device virtio-gpu,xres=1280,yres=800 -device virtio-keyboard -device virtio-tablet -sdl
</source>


To the QEMU virt machine with one of the images one could proceed through the following steps:
== Older QEMU (pre-6.0) ==


'''Step 0.''' Install QEMU with riscv64 system support. For example, in the case of ALT x86_64: [http://sisyphus.ru/en/srpm/Sisyphus/qemu qemu-system-riscv-core].
For older QEMU, you need OpenSB (firmware) binary.


'''Step 1.a''' The OpenSBI firmware is placed inside the qcow2/qcow2c image. Let us copy it out of the image.
'''Option #1''' There is an OpenSBI firmware binary inside the qcow2/qcow2c image. You can copy it out of the image:


<source lang=shell>
<source lang=shell>
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</source>  
</source>  


'''Step 1.b''' Alternative option: [http://ftp.altlinux.org/pub/distributions/ALTLinux/ports/riscv64/Sisyphus/noarch/RPMS.classic/ download]
'''Option #2''' [http://ftp.altlinux.org/pub/distributions/ALTLinux/ports/riscv64/Sisyphus/noarch/RPMS.classic/ Download] and install the latest version of OpenSBI for QEMU.
and install the last version of the OpenSBI for QEMU virt machine.
 
The OpenSBI firmware for QEMU virt will be at /usr/share/opensbi/qemu/virt/firmware/fw_payload.elf
The OpenSBI firmware for QEMU virt will be at <tt>/usr/share/opensbi/qemu/virt/firmware/fw_payload.elf</tt>.


For example:
For example:
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user$ FIRM=/usr/share/opensbi/qemu/virt/firmware/fw_payload.elf
user$ FIRM=/usr/share/opensbi/qemu/virt/firmware/fw_payload.elf
</source>
</source>
'''Step 2.''' Now, it is all set to run the QEMU with a qcow2/qcow2c image, just place the path to the image in QCOW variable:


<source lang="shell">
<source lang="shell">
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           -netdev user,id=eth0,hostfwd=tcp::5900-:5900 -device virtio-net-device,netdev=eth0
           -netdev user,id=eth0,hostfwd=tcp::5900-:5900 -device virtio-net-device,netdev=eth0
</source>
</source>
'''Step 3.''' For a graphical system, the following system setup is performing through [[Regular/riscv64#VNC|VNC]]. To connect to the X11 VNC server one should enter the default
password '''<tt>alt</tt>''', it could be changed to another one at the inital setup of the system through GUI.

Revision as of 09:51, 22 November 2021

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Under construction.
This page is not finished yet and may lack substantial information.


QEMU, starting with version 6.0, include OpenSBI firmware. If you have an older QEMU version, follow the instructions to obtain and use the firmware below.

Some older ALT images for QEMU include a VNC server that is used for system setup and graphics (see Regular/riscv64#VNC for more details). To access that server, it's convenient to forward port 5900. The necessary parameters for that are included into QEMU command lines below.

QEMU 6.0+

QEMU 6.0 virtual machines with kernel 5.14+ have graphis (virtuo-gpu) and input (virtio-keyboard and virtio-mouse) working.

Here are the steps to start a riscv64 virtual machine:

Step 0: Install QEMU with riscv64 support. If your host system is running ALT, you need qemu-system-riscv-core package: 

 apt-get install qemu-system-riscv-core

On Ubuntu, riscv64 emulation is part of qemu-system-misc.

Step 1: Download the recent version of u-boot-qemu for riscv64. You can use the riscv64 link from https://packages.altlinux.org/ru/sisyphus/srpms/u-boot-qemu/rpms.

From the downloaded package, extract /usr/share/u-boot/qemu-riscv64_smode/u-boot.bin. For example: 

 rpm2cpio u-boot-qemu-*riscv64.rpm | cpio -vi --to-stdout './usr/share/u-boot/qemu-riscv64_smode/u-boot.bin' > u-boot.bin


Step 2: Now you can start a virtual machine via the following commands: 


$ IMAGE=<path to riscv64 image in img or qcow2 format>
$ UBOOT=<path to u-boot.bin from step 1>
$ qemu-system-riscv64 \
          -nographic -m 2G  -machine virt -kernel "$UBOOT" \
          -smp cpus=4 \
          -drive file=$IMAGE,id=hd0 -device virtio-blk-device,drive=hd0  \
          -netdev user,id=eth0,hostfwd=tcp::5900-:5900 -device virtio-net-device,netdev=eth0 \
          -device virtio-gpu,xres=1280,yres=800 -device virtio-keyboard -device virtio-tablet -sdl

Older QEMU (pre-6.0)

For older QEMU, you need OpenSB (firmware) binary.

Option #1 There is an OpenSBI firmware binary inside the qcow2/qcow2c image. You can copy it out of the image: 

root$ qemu-nbd -c /dev/nbd0 qemu-riscv64.qcow2c
root$ mount /dev/nbd0p1 /mnt
root$ cp -v /mnt/usr/share/opensbi/qemu/virt/firmware/fw_payload.elf .
user$ FIRM=./fw_payload.elf

Option #2 Download and install the latest version of OpenSBI for QEMU.

The OpenSBI firmware for QEMU virt will be at /usr/share/opensbi/qemu/virt/firmware/fw_payload.elf.

For example: 

user$ curl -O http://ftp.altlinux.org/pub/distributions/ALTLinux/ports/riscv64/Sisyphus/noarch/RPMS.classic/opensbi-firmware-qemu-0.6-alt1.noarch.rpm
root$ rpm -i opensbi-firmware-qemu-0.6-alt1.noarch.rpm
user$ FIRM=/usr/share/opensbi/qemu/virt/firmware/fw_payload.elf

$ QCOW=qemu-riscv64.qcow2c
$ qemu-system-riscv64 \
          -nographic -machine virt -kernel "$FIRM" \
          -m 2G -smp cpus=4 \
          -drive file="$QCOW",id=hd0 -device virtio-blk-device,drive=hd0 \
          -netdev user,id=eth0,hostfwd=tcp::5900-:5900 -device virtio-net-device,netdev=eth0