Supported Devices
Vexpress-aarch64
Introduction
Qemu emulation platform for Versatile-express aarch64 (ARM64bits)
 | CPU Information processor : 0 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x41 CPU architecture: 8 CPU variant : 0x1 CPU part : 0xd07 CPU revision : 0 boot.log |
Installation
Enviroment preparation
- Get the needed files:
- Create a hd image
$ qemu-img create hd.img 1G $ mkfs.ext2 -F -m 0 -b 1024 hd.img
- Install the rootfs in the new hd
$ sudo mount -o loop -t ext2 hd.img /mnt $ sudo rm -rf /mnt/lost+found $ sudo tar -C /mnt -pxvf $ sudo tar -C /mnt -pxvf
Setting up the enviroment
- Check before umounting the hd you have made the needed changes (rc.conf, fstab, net, serial...). We shall see later how to
configure certain files.
Booting the system
- Booting up
$ qemu-system-arm -M vexpress-a9 -cpu cortex-a9 -m 1024 -kernel Image -sd hd.img -append "rw console=ttyAMA0 console=tty root=/dev/mmcblk0"
Configuration
Serial console
- To obtain serial access we need to make some modifications to two files:
- Adding in /etc/inittab:
T0:23:respawn:/sbin/agetty -L ttyAMA0 9600 vt100
- and in /etc/securetty:
ttyAMA0
Add a swap file
# dd if=/dev/zero of=/var/swap bs=128K count=1024 1024+0 records in 1024+0 records out 134217728 bytes (134 MB) copied, 22.2331 s, 6.0 MB/s # mkswap /var/swap Setting up swapspace version 1, size = 131068 KiB no label, UUID=882f6a5c-12a8-4cbd-9e45-d0cdaac2c2f7 # swapon /var/swap
Booting from Initrd
Configuration
We should setup all the important files: pkgmk.conf, prt-get.conf, inittab, fstab, rc.conf, net ...
Any extra info
qemu-system-aarch64 -kernel Image-4.1.1 -initrd initrd.gz -machine virt -cpu cortex-a57 -machine type=virt -nographic -smp 1 -m 1024 -append "root=/dev/ramdisk console=ttyAMA0"