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Using qemu with poky notes
==========================
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.
The runqemu script is run as:
runqemu <target> <type> <zimage> <filesystem>
where:
<target> is "qemuarm" or "qemux86"
<type> is "ext2" or "nfs"
<zimage> is the path to a kernel (zimage-qemuarm.bin)
<filesystem> is the path to an ext2 image (filesystem-qemuarm.ext2)
It will default to the qemuarm, ext2 and the last kernel and oh-image-pda
image built by poky.
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)
Notes
=====
- The runqemu script runs qemu with sudo. Change perms on /dev/net/tun to
run as non root
- You can set QEMU_MEMORY env var to control amount of available memory
( defaults to 64M )
- There is a bug in qemu in that means occasionally it will use 100% cpu.
You will need to restart it in this situation.
More Info
=========
- See http://o-hand.com/~richard/qemu.html
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