In the next post we will do something useful with this. This was tested on Arch Linux (qemu-arm version 2.8.0), and only some parts on a Debian container. #Qemu network bridge software# Free Software Foundation, Inc., 59 Temple Place, Suite 330, # along with this script if not, write to the #Qemu network bridge license# You should have received a copy of the GNU General Public License # GNU General Public License for more details. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # but WITHOUT ANY WARRANTY without even the implied warranty of # This script is distributed in the hope that it will be useful, # the Free Software Foundation either version 2 of the License, or # under the terms of the GNU General Public License as published by # This script is free software you can redistribute it and/or modify it no-reboot -append "root=/dev/sda2 panic=1" -drive format=raw,file=$IMG \Įcho "$ROUTES" | tac | while read l do ip r a $l done Qemu-system-arm -kernel $KERNEL -cpu arm1176 -m 256 -M versatilepb $NET_ARGS \ Grep -q tun /etc/qemu-ifup /etc/qemu-ifdown tmpmnt/etc/udev/rules.d/les /dev/null #Qemu network bridge macMAC='52:54:be:36:42:a9' # comment this line for random MAC (annoying if on DHCP) NO_NETWORK=1 # set to 1 to skip network configurationīRIDGE=br0 # name for the bridge to share network with the raspbian img # Cmnd_Alias QEMU=/usr/bin/ip,/usr/bin/modprobe,/usr/bin/brctl # For the network bridge configuration, this needs to be in /etc/sudoers # It enables SSH on the image (but have to login once on lite version) # It requires a modified kernel image for qemu. # in order to obtain network access inside raspbian # If NO_NETWORK=1 (default), that configuration will have to be done manually # with the same gateway and routes, and restore it when exiting qemu # If NO_NETWORK=0 it will include your network interface on a bridge # qemu-pi.sh -raspbian-jessie.img # or any other image # GPL licensed (see end of file) * Use at your own risk! That is what the following lines of the script do cat > tmpmnt/etc/udev/rules.d/les /etc/qemu-ifup /etc/qemu-ifdown Then, we are only left with the task of interfacing the block devices that raspbian expects, which are of the form mmcblk0 to what it will receive from the QEMU virtual block device, which come on the form sda . I included a modified kernel 4.4.34 is in my repo.Īfter this, it is a matter of invoking qemu with the -kernel option to replace the one that comes with Raspbian, and the -M versatilepb option to specify the emulated hardware. The problem is that the kernel that ships with Raspbian is taylored for the Raspberry Pi board, which is not supported by QEMU.įor this reason, the kernel needs to be patched and cross-compiled in order to be run on the ARM Versatile development board, which is supported by QEMU. To see what your qemu-system-arm can emulate run $ qemu-arm -cpu help I recommend going easy for the arm1136 or arm1176 . The original Raspberry Pi has an ARM11 (ARMv6) processor, RPi2 has an ARM Cortex-A7, and RPi3 has an ARM Cortex-A53. For this, we want to run it on the QEMU virtual machine. It can be convenient to play around with the OS without the need for a Rasberry Pi or an SD card. The Raspbian operating system is a Debian based GNU/Linux distribution that targets the Raspberry Pi board. Remember to use g in order to regain mouse control on QEMU. When you are done modifying the image, you can dd it to an SD card and run it directly on a Raspberry Pi. If you ever need more disk space, you can qemu-img resize -raspbian-jessie-lite.img 2G Cmnd_Alias QEMU=/usr/bin/ip,/usr/bin/modprobe,/usr/bin/brctl Now your Raspbian image will have network connectivity, so you can SSH to it, and apt-get from it.įor QEMU to have access to the network bridge configuration, this needs to be in /etc/sudoers. IFACE=enp3s0 # interface that we currently use for internetīRIDGE=br0 # name for the bridge we will create to share network with the raspbian img NO_NETWORK=1 # set to 1 to skip network configuration If you want to modify this behaviour, change the relevant lines in the script. If you do this, the script will setup a bridge called br0 on your enp3s0 interface, and restore your routes after QEMU exits. If you want network access, edit qemu-pi.sh line 30 and set NO_NETWORK=0 qemu-pi.sh -raspbian-jessie-lite.img # correct to real name #Qemu network bridge downloadThen, clone my qemu-raspbian-network repository, download a raspbian image and launch qemu-pi.sh git clone #Qemu network bridge installOn Debian based sudo apt-get install kvm qemu bridge-utils On my Arch machine this means sudo pacman -S qemu qemu-arch-extra bridge-utils If you haven’t yet, install QEMU on your system. I found most resources on this outdated, relying on broken links, and lacking the steps for network access, so I reviewed them and streamlined the process. This is a little guide to emulate the Raspbian operating system for ARM on QEMU with network connectivity.
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