Emulating the XO: Difference between revisions
(revert FreeBSD Quick Start layout experiment. also tweaked.) |
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qemu -soundhw es1370 -serial `tty` -hda laptop.img |
qemu -soundhw es1370 -serial `tty` -hda laptop.img |
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4. See [[Emulating the XO#Quick Start: Running for the first time|Quick Start: Running for the first time]]. |
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5a. Obtain kqemu. |
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On fedora, x86, |
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XXX please fill this in if you know |
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On fedora, x86_64, there are no official kqemu, or kqemu kernel module, rpms. [http://atrpms.net/name/kqemu/ atrpms.net] has some. Or install from source. |
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On Debian/Ubuntu, as root: |
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XXX please fill this in if you know |
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5b. Run modprobe. |
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modprobe kqemu major=0 |
modprobe kqemu major=0 |
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This will need to be run again if the host computer is rebooted. If you forget, qemu will be slow again (and a one-line error message scroll by when you run qemu). |
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and add the <tt>-kernel-kqemu</tt> option. See [[Using QEMU for Troubleshooting]] for tips. |
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5c. Run a qemu variant with the <tt>-kernel-kqemu</tt> option. |
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We have heard multiple people say that QEMU doesn't work with these images on the debian-derived distributions. The symptom is that the kernel hangs during boot. There's a problem with <code>bochsbios</code> version 2.2, version 2.3 works. As a quick fix, <code>apm=off</code> can be added to OLPC kernel arguments. (For more info, see the [[Talk:OS images for emulation#Boot hangs on Debian-derived distros|discussion]].) |
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On x86, |
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If you have network problems through Qemu and OLPC, [[Using_QEMU_on_Troubleshooting#Network|try this.]] |
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qemu -kernel-kqemu ... |
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On x86_64, |
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qemu-system-x86_64 -kernel-kqemu ... |
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If you forget and use just <tt>qemu</tt> instead, things will be slow again. |
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=== FreeBSD Quick Start === |
=== FreeBSD Quick Start === |
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=== Quick Start: |
=== Quick Start: Getting an image === |
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=== Quick Start: Running for the first time === |
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=== Quick Start: Does my qemu have kqemu? === |
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Does the version of the QEMU support [http://fabrice.bellard.free.fr/qemu/kqemu-doc.html KQEMU]? Type ctrl+alt+2 and type '''info kqemu'''. Use ctrl+alt+1 to return to OLPC screen. |
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== Developing software using emulation == |
== Developing software using emulation == |
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[[Category:OS]] |
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[[Category:Developers]] |
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[[Category:Emulation]] |
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[[Category:Sugar]] |
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Revision as of 01:45, 24 May 2007
This page is an inprogress overhaul of OS images for emulation.
Quick Start
Mac Quick Start
Linux Quick Start
1. Obtain qemu.
On Fedora, as root:
yum install qemu
On Debian/Ubuntu, as root:
apt-get install qemu
2. Obtain an image.
Download olpc-redhat-stream-development-ext3.img.bz2 (md5). Then,
bzcat olpc-redhat-stream-development-ext3.img.bz2 > laptop.img
3. Run qemu on the image.
qemu -soundhw es1370 -serial `tty` -hda laptop.img
4. See Quick Start: Running for the first time.
5 (optional) Make qemu run faster.
If you have an x86 or x86_64 cpu, you can use kqemu to speed up the emulation several 100%.
5a. Obtain kqemu.
On fedora, x86,
XXX please fill this in if you know
On fedora, x86_64, there are no official kqemu, or kqemu kernel module, rpms. atrpms.net has some. Or install from source.
On Debian/Ubuntu, as root:
XXX please fill this in if you know
5b. Run modprobe.
modprobe kqemu major=0
This will need to be run again if the host computer is rebooted. If you forget, qemu will be slow again (and a one-line error message scroll by when you run qemu).
5c. Run a qemu variant with the -kernel-kqemu option.
On x86,
qemu -kernel-kqemu ...
On x86_64,
qemu-system-x86_64 -kernel-kqemu ...
If you forget and use just qemu instead, things will be slow again.
FreeBSD Quick Start
Install qemu from ports:
cd /usr/ports/emulators/qemu && make install clean
or as a package
pkg_add -r qemu
Then load kqemu and aio kernel modules:
kldload kqemu kldload aio
and launch the image you want:
qemu -hda olpc-stream-development-7-20060609_1600-ext3.img
- Should this take the same arguments as the linux qemu invocation? Are those arguments even needed for linux? MitchellNCharity 21:18, 23 May 2007 (EDT)
Quick Start: Getting an image
Quick Start: Running for the first time
Quick Start: Does my qemu have kqemu?
Does the version of the QEMU support KQEMU? Type ctrl+alt+2 and type info kqemu. Use ctrl+alt+1 to return to OLPC screen.