My main system gives me this:
hrw@home:~$ history|awk '{a[$2]++ } END{for(i in a){print a[i] " " i}}'|sort -rn|head
379 git
209 bitbake
171 cd
113 sudo
111 ls
77 rm
76 mc
73 mtn
73 grep
72 svn
It is easy to see what takes most of my time ;)
Random mumblings of ARM developer
My main system gives me this:
hrw@home:~$ history|awk '{a[$2]++ } END{for(i in a){print a[i] " " i}}'|sort -rn|head
379 git
209 bitbake
171 cd
113 sudo
111 ls
77 rm
76 mc
73 mtn
73 grep
72 svn
It is easy to see what takes most of my time ;)
Few days ago Nokia N800 tablet emulation was released into public. Richard integrated it into Poky so now we have QEMU which can be used not only to test ARM images on ARM Versatile or Sharp Zaurus but also to run on Nokia N800 tablet. Of course it is not limited to Poky images — Maemo boots very nicely on it :)
Booting Poky is easy: runqemu nokia800
after building of “poky-image-sato” for “nokia800” machine. After few minutes (needed to create NAND Flash image and boot into JFFS2 rootfs) Poky desktop appears:
Booting Maemo takes few steps more now (will be improved).
Use poky-nokia800-flashutil
to generate NAND Flash image:
poky-nokia800-flashutil initfs.jffs2 maemo-image.qemuflash initfs poky-nokia800-flashutil config.mtd maemo-image.qemuflash config poky-nokia800-flashutil rootfs.jffs2 maemo-image.qemuflash rootfs
Then “touch maemo-image” and run one command: poky-qemu zImage maemo-image
to boot it.
Basic emulation works. There is no networking yet, DSP code is not emulated and few other limitations. But it is work in progress so expect improvements.
Patch alone can be fetched from Poky repository.
Linux binaries of QEMU with N800 support can be built with Poky by bitbake qemu-sdk
command. They will be also part of Poky Linux SDK.
UPDATE: poky-nokia800-flashutil
instructions are fixed (thx to Yasser)
UPDATE: there is second part of that story.
Three months ago I wrote post about situation of my Nokia 770 tablet. Today I looked how situation looks with non-Maemo systems.
Flashed recent Poky Linux build. Device booted into nice Sato desktop which I am familiar with. As it was expected — no WiFi support in base system. Why? Licensing problem.
Nokia tablets WiFi stack in implemented by:
We also use 2.6.18 kernel from OS2007 instead of 2.6.16.27 from OS2006. With some hacking on “umac.ko” module from 2.6.16.27 + patching “cx3110x” driver I got module which loads on my device. But then other problem appeared — WPA Supplicant is unable to connect to WiFi interface due to lack of wireless extensions support. And Nokia implementation is closed source :(
On IRC I got information that there is a patch which adds WE18 support into cx3110x driver. Fetched, applied but situation is the same:
[ 7206.999359] umac: module license 'Proprietary' taints kernel.
[ 7210.030334] CX3110x chip variant: STLC4370
[ 7210.319458] CX3110x: firmware version: 2.13.0.0.a.13.14
[ 7210.319580] Loaded CX3110x driver, version 0.8
root@nokia770:~# wpa_supplicant -Dwext -iwlan0 -c /etc/wpa_supplicant.conf
ioctl[SIOCSIWPMKSA]: No such device
and then reboot :(
So it looks like my 770 will get Maemo OS2006 again and will end it’s life as console for simple games + music player. Too bad that it hard to make it work with other systems.
BTW: I wonder why Maemo.org forbids GoogleBot… It is really hard to find Maemo related things with Google :(
UPDATE: Niels Breet (X-Fade on #maemo) pointed me to maemo webdevs discussion which clarify that GoogleBot index Maemo websites. My fault — sorry guys. It is hard to find current informations in wiki but there are plans to move to MediaWiki and reorganize content.
This year I decided to strip my blog from CSS code used for making design (as part of CSS Naked day).
The idea behind this event is to promote Web Standards. Plain and simple. This includes proper use of (x)html, semantic markup, a good hierarchy structure, and of course, a good ‘ol play on words. It’s time to show off your
.
And I think that my blog do that quite well. OK, it has few bugs in code so no W3C validation but it is partially WordPress fault ;D
OpenEmbedded builds usually take lot of time as not everyone has build machines with multiple CPUs (or multi-core CPUs). But how to make them faster and make better use of multiple CPU cores?
Solution is in two BitBake variables:
make
so setting it to “-j X” is handy (where value of X depends on number of CPU cores)Which values are sane? On Core2Quad I use “-j 4” and 16 BitBake threads. On dual core Athlon64 I use less threads (only 4) but this machine is also my desktop so I like to be able to work :) Sometimes I have two builds locally running with those settings and it is still usable.
How to check which one are good for you? Run htop on one console and builds on another. If CPU cores are busy and it does not hit swap too often then it is OK.
NOTE: this post was written in 2008 and may not fit newer versions of OpenEmbedded/Yocto based build systems.
Thanks to work done by Jiri Benc in his “ukeyboard” alternative control panel for language and regional settings I am able to present Polish layout for N810 hardware keyboard.
Polish chars are on Chr+ (where is one of “acelnosxz”).
Also few other combinations are added:
Fn+Space = | Chr+Space = Tab Chr+j = [ Chr+k = ]
Original functions of “Chr” key were dropped — there is no small on screen keyboard after single press of “Chr” and no option to enter other national chars (like “öïüõôōő” etc).
Previous post about moving to London was 1st April joke. We plan to move from Poznań but not outside of Poland. So sorry guys — we will meet in UK one day but it will be short visit not staying.
I have to admit that I did not thought that so many people will take that post serious. First congratulations came less then half hour after publishing, then IRC greetings… Probably this is because it is so near to true — as person working alone at home I miss contact with coworkers (as this often ends in brainstorming) and OH office has some interesting gadgets :D
Why “moving to London” was chosen? I did not had a good idea for April’s fools joke and Ania (my wife) gave me this suggestion. Other ideas were:
And few others also too hard to believe so I wrote what I wrote. Sorry guys.
After long discussion with my wife we decided to move to London, UK.
Why such move? Many reasons — I will name a few:
When will it happen? I already discussed it with Matthew and it will happen in June/July (to be able to travel to GUADEC with all OH guys).
UPDATE: No — I will not move to London. This post is (maybe a bit cruel) 1st April joke. More info in other post.