Emulating the XO: Difference between revisions
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''This page is an inprogress overhaul of [[OS images for emulation]].'' |
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{{emulation-nav}} |
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In the past, OLPC produced alternative software images which could be run in emulators such as QEMU and VMware. This meant that development and testing could happen to a limited extent without requiring an XO laptop. |
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== Quick Start == |
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'''In 2013, please see Tom Gilliard's many [http://wiki.sugarlabs.org/go/Sugar_Creation_Kit virtual machine images ready-to-go].''' |
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*[[Using QEMU on Windows XP|Windows]] |
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*[[Emulating the XO#Mac Quick Start|Mac]] |
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*[[Emulating the XO#Linux Quick Start|Linux]] |
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*[[Emulating the XO#FreeBSD Quick Start|FreeBSD]] |
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Note, XOs are readily available to genuine volunteer contributors through the [[Contributors program]]. |
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=== Mac Quick Start === |
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[http://sugarlabs.org Sugar], the unique user interface of the XO laptops, is also distributed as a generic software project and can be developed and tested on "regular" computers as well as XOs. See [http://wiki.sugarlabs.org/go/Downloads Sugar Labs Downloads] for the full range of options, such as [http://wiki.sugarlabs.org/go/Sugar_on_a_Stick Sugar on a Stick]. |
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=== Linux Quick Start === |
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For emulation of extremely old builds, you may be able to come across "ext3 images" on some corners of http://download.laptop.org and http://xs-dev.laptop.org/~cscott/olpc/streams/ which can be loaded into emulators. You are unlikely to find support for them! |
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1. Obtain qemu. |
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[[Category:OS]] |
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On Fedora, as root: |
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[[Category:Developers]] |
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[[Category:Emulation]] |
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yum install qemu |
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[[Category:Sugar]] |
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On Debian/Ubuntu, as root: |
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apt-get install qemu |
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2. Obtain an image. |
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Download [http://olpc.download.redhat.com/olpc/streams/development/LATEST-STABLE-BUILD/ext3/olpc-redhat-stream-development-ext3.img.bz2 olpc-redhat-stream-development-ext3.img.bz2] ([http://olpc.download.redhat.com/olpc/streams/development/LATEST-STABLE-BUILD/ext3/olpc-redhat-stream-development-ext3.img.bz2.md5 md5]). Then, |
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bzcat olpc-redhat-stream-development-ext3.img.bz2 > laptop.img |
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3. Run qemu on the image. |
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qemu -soundhw es1370 -serial `tty` -hda laptop.img |
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4 (optional) Make qemu run faster. |
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If you want to use [http://fabrice.bellard.free.fr/qemu/kqemu-doc.html kqemu] to speed up the emulation (on x86 and related cpus) then |
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modprobe kqemu major=0 |
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and add the <tt>-kernel-kqemu</tt> option. See [[Using QEMU for Troubleshooting]] for tips. |
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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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If you have network problems through Qemu and OLPC, [[Using_QEMU_on_Troubleshooting#Network|try this.]] |
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=== FreeBSD Quick Start === |
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{| cellspacing=5 |
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|- valign="top" |
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| Install qemu from ports: |
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| style="background:lightgray; " | <tt>cd /usr/ports/emulators/qemu && make install clean</tt> |
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|- valign="top" |
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| or as a package |
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| style="background:lightgray; " | <tt>pkg_add -r qemu</tt> |
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|- valign="top" |
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| Once installed, load kqemu and aio kernel modules: |
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| style="background:lightgray; " | <tt>kldload kqemu<br>kldload aio</tt> |
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|- valign="top" |
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| and launch the image you want: |
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| style="background:lightgray; " | <tt>qemu -hda olpc-stream-development-7-20060609_1600-ext3.img</tt> |
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|} |
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=== Quick Start: Get image === |
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== Developing software using emulation == |
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Latest revision as of 16:26, 30 July 2013
| modify |
In the past, OLPC produced alternative software images which could be run in emulators such as QEMU and VMware. This meant that development and testing could happen to a limited extent without requiring an XO laptop.
In 2013, please see Tom Gilliard's many virtual machine images ready-to-go.
Note, XOs are readily available to genuine volunteer contributors through the Contributors program.
Sugar, the unique user interface of the XO laptops, is also distributed as a generic software project and can be developed and tested on "regular" computers as well as XOs. See Sugar Labs Downloads for the full range of options, such as Sugar on a Stick.
For emulation of extremely old builds, you may be able to come across "ext3 images" on some corners of http://download.laptop.org and http://xs-dev.laptop.org/~cscott/olpc/streams/ which can be loaded into emulators. You are unlikely to find support for them!