Linux version:
$ lsb_release -a
Distributor ID: Ubuntu
Description: Ubuntu 20.04.4 LTS
Release: 20.04
Codename: focal
Download and build Qemu-7.2.0:
# Dependent library
$ apt-get install libslirp-dev
# Qemu
$ wget https://download.qemu.org/qemu-7.2.0.tar.xz
$ wget https://download.qemu.org/qemu-7.2.0.tar.xz
$ tar xvJf qemu-7.2.0.tar.xz
$ cd qemu-7.2.0
$ ./configure
$ sudo make & make installCreate workplace:
$ mkdir ~/raspbianDownload qemu-rpi-kernel:
$ cd ~ && git clone https://github.com/dhruvvyas90/qemu-rpi-kernel.git
$ cp ~/qemu-rpi-kernel/kernel-qemu-4.14.79-stretch ~/raspbian/
$ cp ~/qemu-rpi-kernel/versatile-pb.dtb ~/raspbian/
$ rm -rf ~/qemu-rpi-kernelDownload Raspbian disk image and unzip:
$ cd ~/raspbian/
$ wget http://downloads.raspberrypi.org/raspbian/images/raspbian-2020-02-14/2020-02-13-raspbian-buster.zip
$ unzip 2020-02-13-raspbian-buster.zip && rm 2020-02-13-raspbian-buster.zip
$ mv 2020-02-13-raspbian-buster.img raspbian.imgFiles in the current directory:
$ ls ~/raspbian/
kernel-qemu-4.14.79-stretch raspbian.img versatile-pb.dtbFind starting sector of the image's second partition:
$ fdisk -l raspbian.img
Disk raspbian.img: 3.54 GiB, 3787456512 bytes, 7397376 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xea7d04d6
Device Boot Start End Sectors Size Id Type
raspbian.img1 8192 532479 524288 256M c W95 FAT32 (LBA)
raspbian.img2 532480 7397375 6864896 3.3G 83 LinuxMultiply that sector number by 512 and use the result as the offset in mounting the image:
$ mkdir /mnt/raspbian
# 532480*512 = 272629760
$ sudo mount ./raspbian.img -o offset=272629760 /mnt/raspbianEdit the ld.so.preload file to comment:
$ sudo vi /mnt/raspbian/etc/ld.so.preload
# comment the only line
/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so
$ sudo umount /mnt/raspbianConvert the raw img file to qcow2 format:
$ qemu-img convert -f raw -O qcow2 ./raspbian.img raspbian.qcow2Copy the following code into a startup script called something like "start.sh":
#！/usr/bin/env bash
sudo qemu-system-arm -kernel kernel-qemu-4.14.79-stretch \
-cpu arm1176 -m 256 \
-M versatilepb -dtb versatile-pb.dtb \
-no-reboot \
-serial stdio \
-append " root=/dev/sda2 panic=1 rootfstype=ext4 rw " \
-hda raspbian.qcow2 \
-net nic \
-net user,hostfwd=tcp::5555-:22 \
-net tap,ifname=tap0,script=no,downscript=noStarting the virtual machine:
$ ./start.sh
...
raspberrypi login:pi
Password:raspberry
...
pi@raspberrypi:~$ The shipping image is 91% full:
pi@raspberrypi:~$ df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/root ext4 3.1G 2.8G 0.3G 91% /
...Shut down the virtual machine:
pi@raspberrypi:~$ sudo shutdown -h nowIncrease the disk size:
$ qemu-img resize raspbian.qcow2 +4G
$ ./start.sh
...
pi@raspberrypi:~$ sudo sed -E 's/mmcblk0p?/sda/' /usr/bin/raspi-config | sudo bash
# Select: (7) Advanced options -> (A1) Expand Filesystem -> <Finish>
# Reboot now: <Yes>Confirm the expanded disk size is recognized by the system:
pi@raspberrypi:~$ df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/root ext4 7.1G 2.8G 4.1G 41% /
...pi@raspberrypi:~$ sudo raspi-config
# (5)Interfacing Options -> (P2)SSh -> enable ssh? <yes>
pi@raspberrypi:~$ service ssh status
● ssh.service - OpenBSD Secure Shell server
Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enab
Active: active (running) since Sun 2023-02-26 07:27:52 GMT; 39s ago
...$ ssh [email protected] -p 5555
[email protected]'s password: raspberry
...
pi@raspberrypi:~ $ Emulating a Raspberry Pi with QEMU