The image disk can be produced with qemu by following the steps behind:
- Create a qemu disk image for the OS files and swap. A size of 10GB is sufficient:
qemu-img create -f raw linux-x86.img 10G
- Donwload the Debian Wheezy netinstall kernel and ramdisk:
wget http://ftp.debian.org/debian/dists/wheezy/main/installer-amd64/current/images/netboot/debian-installer/amd64/linux
wget http://ftp.debian.org/debian/dists/wheezy/main/installer-amd64/current/images/netboot/debian-installer/amd64/initrd.gz
- Boot the downloaded kernel (not the gem5 kernel) and ramdisk using a default PC and serial output:
qemu-kvm -M q35 -kernel linux -initrd initrd.gz -hda disks/linux-x86.img -m 2G -nographic -append "auto=true root=/dev/sda1 console=ttyS0 hostname=debian domain= url=<URL>"
where <URL> is the HTTP link (netinstaller only support this) to the debian-preseed file. HTTPS is not supported neither. Uploading the file content on Pastebin and using the raw URL is a quick workaround.
This will create the base image automatically with root/root and tux/tux sets of user/passwords.
- Once the installation done, reboot QEMU with the freshly built kernel in Section \ref{appendix:kernel} and no ramdisk.
qemu-kvm -M q35 -kernel binaries/bzImage -hda disks/linux-x86.img -m 2G -nographic -append "root=/dev/sda1 console=ttyS0"
- On the target machine as root, clone the disk image repository:
git clone https://github.com/anthonygego/gem5-parsec3.git
- Launch the setup script located in the \texttt{disk} folder:
cd gem5-parsec3/disk
./setup.sh
This will automatically install PARSEC dependencies, build and copy the m5 executable in the /sbin folder, copy the new init startup file and build the whole PARSEC suite.
- When ready to launch on gem5, switch between the startup files:
mv /etc/init.d/rcS /etc/init.d/rcS.orig
mv /etc/init.d/rcS.gem5 /etc/init.d/rcS