Poky images with QEMU ===================== Poky can generate qemu bootable kernels and images with can be used on a desktop system. Both arm and x86 images can currently be booted. There are two scripts, runqemu and poky-qemu, one for use within poky, the other externally. QEMU outside Poky (poky-qemu) ============================= The poky-qemu script is run as: MACHINE=<machine> poky-qemu <zimage> <filesystem> where: <zimage> is the path to a kernel (e.g. zimage-qemuarm.bin) <filesystem> is the path to an ext2 image (e.g. filesystem-qemuarm.ext2) <machine> is "qemuarm" or "qemux86" The MACHINE=<machine> prefix is optional and without it the script will try to detect the machine name from the name of the <zimage> file. If <filesystem> isn't specified, nfs booting will be assumed. QEMU within Poky (runqemu) ========================== The runqemu script is run as: runqemu <target> <type> <zimage> <filesystem> where: <target> is "qemuarm","qemux86","nokia800","spitz" or "akita" <type> is "ext2", "nfs", "ext3" or "jffs2". (not all machines support all options) <zimage> is the path to a kernel (e.g. zimage-qemuarm.bin) <filesystem> is the path to the image (e.g. filesystem-qemuarm.ext2) It will default to the qemuarm, ext2 and the last kernel and poky-image-sdk image built by poky. Notes ===== - The scripts run qemu using sudo. Change perms on /dev/net/tun to run as non root - You can access the host computer at 192.168.7.1 within the image. - Your qemu system will be accessible as 192.16.7.2. - The default NFS mount points are /srv/nfs/qemux86 or /srv/nfs/qemuarm depending on the target type. - Images built for qemux86/qemuarm contain NFS server which export whole rootfs (/) in read/write mode. - You can set QEMU_MEMORY to control amount of available memory (default 64M). - You can set SERIAL_LOGFILE to have the serial output from the image logged to a file. NFS Image Notes =============== As root; % apt-get install nfs-kernel-server % mkdir /srv/nfs/qemuarm Edit via /etc/exports : # /etc/exports: the access control list for filesystems which may be exported # to NFS clients. See exports(5). /srv/nfs/qemuarm 192.168.7.2(rw,no_root_squash) % /etc/init.d/nfs-kernel-server restart % modprobe tun untar build/tmp/deploy/images/<built image>.rootfs.tar.bz2 into /srv/nfs/qemuarm Finally, launch: % runqemu <target> nfs (Substitute qemux86 for qemuarm when using qemux86) Copyright (C) 2006-2008 OpenedHand Ltd.