View source for OS Builder/Run under emulation

Purpose: bootstrapping XO-4 to Fedora 20 using QEMU.

Outcome: a .zd file for installation.

== Ingredients ==

* an XO-4, the target,
* a conventional 32-bit or 64-bit computer running Ubuntu 14.04, the host,
* a USB drive.

== Recipe ==

* install needed tools on the host,
 apt-get install qemu-system-arm libguestfs-tools
* download the armhfp Fedora 20 Minimal image, from https://fedoraproject.org/wiki/Architectures/ARM/F20/Installation#For_Versatile_Express_Emulation_with_QEMU
 wget http://mirror.aarnet.edu.au/pub/fedora/linux/releases/20/Images/armhfp/Fedora-Minimal-armhfp-20-1-sda.raw.xz
* extract the kernel and initramfs from the image,
 sudo virt-copy-out -a Fedora-Minimal-armhfp-20-1-sda.raw \
    /boot/vmlinuz-3.11.10-301.fc20.armv7hl .
 sudo virt-copy-out -a Fedora-Minimal-armhfp-20-1-sda.raw \
    /boot/initramfs-3.11.10-301.fc20.armv7hl.img .
* boot the emulated system,
 sudo qemu-system-arm -machine vexpress-a9 -m 1024 -nographic \
    -net nic -net user \
    -append "console=ttyAMA0,115200n8 rw root=/dev/mmcblk0p3 rootwait physmap.enabled=0" \
    -kernel vmlinuz-3.11.10-301.fc20.armv7hl \
    -initrd initramfs-3.11.10-301.fc20.armv7hl.img \
    -sd Fedora-Minimal-armhfp-20-1-sda.raw
* follow [[OSBuilder/Run_on_XO_hardware]] to make a minimal build.