Emulating the XO: Difference between revisions

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(→‎Comparison of alternatives: Add "recomendations" subsection. Add "sugar-jhbuild on Ubuntu on emulation" alternative. Note sugar-jhbuild sometimes just works.)
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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.
[[Image:AP1_39.jpg|thumb|laptop-in-laptop]]


'''In 2013, please see Tom Gilliard's many [http://wiki.sugarlabs.org/go/Sugar_Creation_Kit virtual machine images ready-to-go].'''
== Quick Start - [[LiveCd|LiveCD]] ==


Note, XOs are readily available to genuine volunteer contributors through the [[Contributors program]].
For many, the [[LiveCd|LiveCD]] is the easiest way to try [[Sugar]]. It's easy to do, but your work is lost when you reboot.

== Quick Start - [[Emulating the XO/Quick Start|Emulation]] ==

'''[[Emulating the XO/Quick Start|Emulation]]''' is the other way to try [[Sugar]]. It can be harder to set up,, but work is preserved.
:Sound in [[TamTam]] may not be working at the moment. [[User:MitchellNCharity|MitchellNCharity]] 13:16, 5 June 2007 (EDT)

== Quick Start for Developers ==
Developing on emulation is one alternative for developing software.

Get [http://olpc.download.redhat.com/olpc/streams/development/LATEST/devel_ext3/olpc-redhat-stream-development-devel_ext3.img.bz2 the latest image]
from [http://olpc.download.redhat.com/olpc/streams/development/LATEST/devel_ext3/ here]. ''(add link to tinderbox)''
Install QEMU and kernel acceleration as described in [[Emulating the XO/Quick Start]]. See [[/Help_and_tips#Development]].

Build 451 has been reported to not boot under qemu. 445 is known to work.

== Overview ==

One way to run oplc software is using an emulator on your pc. See [[Getting started programming]] for other options.

Note '''[[:Category:Emulation]]''' and '''[[Emulating the XO/Help and tips|Help and tips]]'''.

For play, you can use [[LiveCd]] or [[Emulating the XO/Quick Start|Quick Start]].

For development, you can use [[LiveCd]], or qemu (as in quick start, but with a different image), or perhaps one of the [[Developer Images]] other than the LiveCd. An alternate approach is to attempt [[:Category:Installing_Sugar|installing sugar]]. See [[Getting started programming]] for a comparison.

A common development approach is to use [[QEMU]] with kqemu acceleration. See [[Emulating the XO/Quick Start|Quick Start]] for the basics.
Though for development, we will use a different .img, one with a few extra utility programs. See [[OS images]], including '''[[OS_images#Latest_Stable_Build |latest stable build]]'''.

Instead of qemu, you can run [[Emulating the XO/UsingVMware|VMware]], and there are additional options on a [[Emulating the XO/Mac|Mac]].

Please report your experiences in [[User Feedback on Images]]. There is a [[Virtualization Common Room]].

There are [[Emulating the XO/Limitations of XO disk images|limitations with XO disk images]].

The LATEST-STABLE-BUILD versus LATEST build distinction is mostly of interest to people running on actual XO's. In emulation, developers should usually use LATEST. And when STABLE is old, non-developers probably should too.

== Comparison of alternatives ==

An OLPC laptop is custom hardware, running a stripped-down Red Hat linux, running [[Sugar]]. But what if you don't have a real olpc laptop? There are a several options, which can each be used in a couple of ways.

=== recomendations ===
{| border=1 cellspacing=0
|- style="background:lightgray; "
! platform !! purpose !! recommendation
|-
| Windows || development || emulated xo disk image; or emulated Ubuntu with sugar-jhbuild (''success stories?'')
|-
| Mac || development || emulated xo disk image; or emulated Ubuntu with sugar-jhbuild (''success stories?'')
|-
| Mac with Parallels || development || install Ubuntu 32-bit, and [[Sugar on Ubuntu Linux]]. See [[/Mac]].
|-
| Ubuntu 32-bit || development || [[Sugar with sugar-jhbuild]] and [[Sugar on Ubuntu Linux]]
|-
| 32-bit linux || development || [[Sugar with sugar-jhbuild]]
|-
| 64-bit linux || development || xo disk images under qemu; or [[LiveCd]] once it gets updated (currently it's April)
|}

=== background ===
{| border=1 cellspacing=0
|- style="background:lightgray; "
! option
! updated !! sound? !! camera? !! library? !! etoys? !! R/W? !! development software? !! net? !! comments
|-
| [[:Category:Installing Sugar|Installing Sugar]]
| continuous || yes || yes? || yes? || yes
| yes || your own || yes
| On some platforms, it takes time and space (hours and ~3GB), but "just works". On others, it is quite difficult to install.
|-
| [[:Category:Installing Sugar|Installing Sugar]], on a virtual 32-bit Ubuntu, running in an emulator (qemu, parallels, or vmware)
|-
| [[LiveCd]]
| April || yes(boot) yes?(qemu) || yes?(boot) no(qemu) || no || yes
| no || toolchain, Gnome || yes?
| Alternative Quick Start. Can both be booted from, and used in qemu. Problems: A.

|-
| colspan=10 style="background:lightgray; " | [[OS images|XO disk images]]:

|-
| colspan=10 | LATEST-STABLE-BUILD <span style="font-size:80%; "><tt>http://olpc.download.redhat.com/olpc/streams/development/LATEST-STABLE-BUILD/</tt></span>

|-
| ...development-ext3.img
| ~monthly || yes/B || no || yes || yes
| yes || no || after config
| Quick Start for getting a look at Sugar.

|-
| ...development-devel_ext3.img
| ~monthly || yes/B || no || no || yes
| yes || a little || after config

|-
| colspan=10 | LATEST <span style="font-size:80%; "><tt>http://olpc.download.redhat.com/olpc/streams/development/LATEST/</tt></span>

|-
| ...development-ext3.img
| ~daily || yes/B || no || yes || yes
| yes || no || after config

|-
| [http://olpc.download.redhat.com/olpc/streams/development/LATEST/devel_ext3/olpc-redhat-stream-development-devel_ext3.img.bz2 ...development-devel_ext3.img]
| ~daily || yes/B || no || no || yes
| yes || a little || after config
| Good for new developers (requires some command-line comfort).

|-
| colspan=10 style="background:lightgray; " | OTHER

|-
| [[Developer Images#Big Fedora Core 6 Build|FC6+Sugar]]
| April || yes? || ? || ? || no

| yes || Full Fedora Softare Dev. || yes
| 6GB (April version: no etoys)

|}
Key:
:library: A library of sample content is included (english version). Ie, pretty text to web browse without having to get network.
:R/W (writable): With an .img, you can save things between sessions. With a .iso, your environment is the same each time you start.
:development software: are development tools included?
:Net (network): does the network "just work" or "manual" steps are required?

Problems:
:A: LiveCd (April) on fc6 x86_64, kernel panics under kqemu. A squashfs problem.
:B: Tam Tam is silent (though EToys makes noise). Cause unknown.

Notes:
*re "does sugar-jhbuild support camera/mic?": "yes, if the camera uses v4l2 and 640x480, I'd suspect so." Can someone confirm this? (#olpc, now) [[User:MitchellNCharity|MitchellNCharity]] 00:16, 2 June 2007 (EDT)

Doables:
*Remove LiveCd's "?" above.
*Find out what's going on with Tam Tam sound. It would be nice for the xo disk images to all be sound-yes.
*Add a microphone column? Reconsolidate sound/camera/mic into a H/W column?


[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].


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!


[[Category:OS]]
[[Category:OS]]

Latest revision as of 16:26, 30 July 2013

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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.

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!