Hello
As the prebuilt Kernel which comes with the dream-open project is not as cutting edge es I'd like it to be, I wanted to build the Kernel myself and checked out the sources for 2.6.29.
Now I've got some questions and problems:
Are there any known problems of using this kernel with the master branch? Are there any special/manual changes needed?
What are the best settings for the .config file to get a performance oriented and good kernel? Is msm_defconfig any good? (Maybe someone has a .config he could share with me?)
Are there any build time optimizations which would increase perfomance? (I read something about -O2)
Does only the WiFi Module have to be rebuilt?
When I played around, I got an error that a file (elf.h) is missing. How would I correct that/Which file is meant/Where would I get it?
It would be great if someone could answer these questions
Thank you very much
Hello peeps,
I see there is not much activity going on between the users of Fit.
I need a list of all the people who are here and using the fit phone.
Members try to participate actively and help get past the Low Activty Barrier
Also, I wanna know who is ready to do what. These are the perspectives what I am looking for. Users can sign up for multiple posts also!
->Kernel Developement Team
-> Custom ROM Developers
-> Maintainers of Custom ROM and Helpers
-> Beta Testers
-> Mods Informer
-> Theme Creator
-> THeme Porter
-> Rom Testing
-> Custom ROM testing
-> Problem Fixes Testing
-> Doubt-clearance Member
-> DEV. Teacher!
As A initiative, I am also creating a Twitter account. Anybody who would like to create a Facebook Group for the phone's DEV and Testing team is free to do so!
Please Enroll your name below and tell us what time can you spend for what purpose!
Please Help Fit have a Bright Future! Please E-Mail us your Selected Criteria. I will add you to the mailing list. You can get all teh information on what the DEVs. are working about and stuff!
The E-mail Address of the Fit DevTeam-> [email protected]
Twitter ID-> @dev_GalaxyFit
Follow us on Twitter for all the updates on Developments
Regards,
Rohan Mallya.
I sign up for
->Custom Rom DEV.
-> Maintainers of Custom ROM and Helpers
->Mods Informer
Ok i want to be kernel developer and doubt clearance but i have to learn to develop kernel
omarhasan76 said:
Ok i want to be kernel developer and doubt clearance but i have to learn to develop kernel
Click to expand...
Click to collapse
Take your time! And, share the sources from where you are learning! Follow us on Twitter
I sign up for
->Beta tester
->ROM and Custom ROM tester
->Doubt Clearance member
Will add up responsibilities as and when I learn
spike1902 said:
I sign up for
->Beta tester
->ROM and Custom ROM tester
->Doubt Clearance member
Will add up responsibilities as and when I learn
Click to expand...
Click to collapse
Thank yoU!
Follow us on Twitter.
If you want, Just e-mail us your real name and your designation! You will be updated with amazing stuff and things
Sticky'd the the thread for you, good luck with Development.
Also for help with kernel development try my good friend Doomlord.
http://forum.xda-developers.com/member.php?u=2784807
->Beta tester
->ROM and Custom ROM tester
and whatever i learn in the process
Kernel Development
This is a general guide for building kernels and modifying them. Device-specific articles for getting the kernel source and setting up the build environment are provided in their respective sections.
Getting the kernel source
The source for your kernel must be made available by your device's manufacturer in order to comply with the GPL.
I dont know where to get it
Setting up the environment
Instructions for setting up the development environment should be included in your source code package. This should tell you the parts of the Android Open Source Project that must be in your working directory in order to allow the kernel to build. It will tell you what version as well. All of the Android Operating System source code is available at [android.git.kernel.org] and most projects are mirrored at [github.com/android]. Both are accessible via your internet browser as well as git.
Modifying the kernel
After the kernel source has been downloaded and your environment is set up, you can begin modifying the kernel. It is recommended (in most cases mandatory) that you run the standard "make xxx_defconfig" for your device before modifying the configuration.
Running
make
or
make -jX [where X is the number of operations to perform at a time]
at this point will make the stock kernel that your phone's official system has. To modify it, we can go two ways: 1) modify the file '.config' in a text editor, or 2) run
make menuconfig
for a graphical interface.
Modifying '.config' with menuconfigEdit
Typing
make menuconfig
will bring up the aforementioned graphical interface for modifying your kernel. Striking the "y" key when an option is selected (with "< >" or "[ ]" before it) will include it in the kernel. Striking the "m" key will add those options with a "< >" as a Linux kernel module (*.ko).
Adding tethering support (netfilter/iptables)Edit
Adding VPN support (TUN)
Adding Linux swap support
Adding ext3/ext4 support
Mofifying '.config' manually
The alternative to using menuconfig is editing '.config' in your preferred text editor. Options that are not to be included in the build are commented out with a "#". Options that are to be included inside the kernel image are uncommented and have the value of "y". Options with the value "m" are to be built into loadable kernel modules.
Adding tethering support (netfilter/iptables)Edit
Adding VPN support (TUN)Edit
Adding Linux swap supportEdit
Adding ext3/ext4 supportEdit
Packaging and flashing your kernelEdit
Additional stepsEdit
You may find that you want to play around with '.config', but don't want to lose your configuration. You can rename your '.config' to whatever you want and give it the suffix "_defconfig" and put it in "arch/arm/configs/" for the next time you wish to use it.
For example: if you had a kernel that had tethering and ReiserFS support, and you wanted to try enabling VPN without breaking your current setup, you could rename your '.config' to 'my_rfs_tethering_defconfig' and move it to "arch/arm/configs/". The next time you wanted to make this kernel you could run
make my_rfs_tethering_defconfig
and have your kernel configuration just as you left it.
Note that this would overwrite your kernel configuration stored in '.config'
omarhasan76 said:
Kernel Development
This is a general guide for building kernels and modifying them. Device-specific articles for getting the kernel source and setting up the build environment are provided in their respective sections.
Getting the kernel source
The source for your kernel must be made available by your device's manufacturer in order to comply with the GPL.
I dont know where to get it
Setting up the environment
Instructions for setting up the development environment should be included in your source code package. This should tell you the parts of the Android Open Source Project that must be in your working directory in order to allow the kernel to build. It will tell you what version as well. All of the Android Operating System source code is available at [android.git.kernel.org] and most projects are mirrored at [github.com/android]. Both are accessible via your internet browser as well as git.
Modifying the kernel
After the kernel source has been downloaded and your environment is set up, you can begin modifying the kernel. It is recommended (in most cases mandatory) that you run the standard "make xxx_defconfig" for your device before modifying the configuration.
Running
make
or
make -jX [where X is the number of operations to perform at a time]
at this point will make the stock kernel that your phone's official system has. To modify it, we can go two ways: 1) modify the file '.config' in a text editor, or 2) run
make menuconfig
for a graphical interface.
Modifying '.config' with menuconfigEdit
Typing
make menuconfig
will bring up the aforementioned graphical interface for modifying your kernel. Striking the "y" key when an option is selected (with "< >" or "[ ]" before it) will include it in the kernel. Striking the "m" key will add those options with a "< >" as a Linux kernel module (*.ko).
Adding tethering support (netfilter/iptables)Edit
Adding VPN support (TUN)
Adding Linux swap support
Adding ext3/ext4 support
Mofifying '.config' manually
The alternative to using menuconfig is editing '.config' in your preferred text editor. Options that are not to be included in the build are commented out with a "#". Options that are to be included inside the kernel image are uncommented and have the value of "y". Options with the value "m" are to be built into loadable kernel modules.
Adding tethering support (netfilter/iptables)Edit
Adding VPN support (TUN)Edit
Adding Linux swap supportEdit
Adding ext3/ext4 supportEdit
Packaging and flashing your kernelEdit
Additional stepsEdit
You may find that you want to play around with '.config', but don't want to lose your configuration. You can rename your '.config' to whatever you want and give it the suffix "_defconfig" and put it in "arch/arm/configs/" for the next time you wish to use it.
For example: if you had a kernel that had tethering and ReiserFS support, and you wanted to try enabling VPN without breaking your current setup, you could rename your '.config' to 'my_rfs_tethering_defconfig' and move it to "arch/arm/configs/". The next time you wanted to make this kernel you could run
make my_rfs_tethering_defconfig
and have your kernel configuration just as you left it.
Note that this would overwrite your kernel configuration stored in '.config'
Click to expand...
Click to collapse
You wrote it or Got it? :/
got it here is a source code some body download and upload it for s5670
https://opensource.samsung.com/reception.do?first=F
omarhasan76 said:
got it here is a source code some body download and upload it for s5670
https://opensource.samsung.com/reception.do?first=F
Click to expand...
Click to collapse
SUre thanks! Checking it out! I have teh SOurce code ALready!
Then upload it or we have to sign up for downloading
omarhasan76 said:
Then upload it or we have to sign up for downloading
Click to expand...
Click to collapse
Oh kay! I will upload it!
I will upload it in an hour! I am downloading the source code of Galaxy i9000! So, I will upload the Fit source code as soon as the i9000 one is over, fine?
as you told to share our researc i fond a step by step tutorial to prepare kernelhttp://forums.androidcentral.com/htc-hero-rooting-roms-hacks/8072-how-build-your-own-kernel-package-source.html
KK
Recently I decided to learn application development and building custom ROMs so i searched online for sources to learn. I found the following playlist uploaded by the user Marakana on youtube :
http://www.youtube.com/watch?v=Mf7z_mrce00&feature=bf_next&list=PLE953C0B85B50AB62&lf=results_main
There is also a book named "Learning Android" written by the same person who uploaded the videos above. I am new to android development and new to Java even,and I found these tutorials very useful ..... I am posting this because this may help someone
I sure does Help! Thank you for your contribution
krishnakanth_590 said:
Recently I decided to learn application development and building custom ROMs so i searched online for sources to learn. I found the following playlist uploaded by the user Marakana on youtube :
http://www.youtube.com/watch?v=Mf7z_mrce00&feature=bf_next&list=PLE953C0B85B50AB62&lf=results_main
There is also a book named "Learning Android" written by the same person who uploaded the videos above. I am new to android development and new to Java even,and I found these tutorials very useful ..... I am posting this because this may help someone
Click to expand...
Click to collapse
Thanks Man!
I am limited to 5 thanks per day..So, I cant thank you! Sorry!
Dude, for all your effort, I can just thank you! My Sister owns this device! It is shocking to see you in here! I thought you would be developing only for SL, S and S2 P:
---------- Post added at 04:29 PM ---------- Previous post was at 04:28 PM ----------
Is Android based on Linux?
Can someone tell me how to add SmartassV2 to kernel.
I dont know much but i think you have to add it to your kernel source before compiling. Not sure though
Hit thanks if helped
You will have to find the source for the specific governor type, then you will have to add it to your kernel source, then compile it. I'm not a kernel dev but this is probably the approach to it. There are plenty of tutorials that should help you.
This is a build of Ziyan and friend's 3.4 kernel(against their will), optimized for release. Absolutely no debugging features allowed.
Ipv6 and complex adb functions broken.
Graphical Stuttering fixed.
Ubertc4.9.4 (Until I setup 6.0)
Latest F2FS sources. This F2FS is newer than everyone elses. Kanged from KHAON.
Brought up from 3.4.67 to 3.4.110.
Selinux disabled.
Optimized to all hell. Ofast probably regressed performance below that of O2 but Ofast makes people smile so whatever. It's smooth is all I have to say.
Works with any rom.
Mod Edit
Rolling release kernel, no versions. To report bugs tell me the hash, date, or build # of the kernel you have issues with.
Want a feature? Tell me to include it. I'm too lazy to do it? Fork my source and build it then post a link to your sources and I'll include it in the OP if it's good. This project is driven by and for the community.
Sources: Mod Edit
Brought to you by Ziyan, htcdreamon, sheffzor, khaon, eliminater74, coderzs, and me lgrootnoob. Linus Torvalds is a dong, yo.
Thread closed.
Please respect the code originator's polite request in future.
So I have a j2xlte [SpreadTrum SC8830]. I'm interested in getting a custom kernel ready for it (the one on github is very broken)
After waiting for Samsung to give us the kernel and cherry-picking some commits: here's the current source
https://github.com/J2xlteDev/android_kernel_j2xlte/commits/working
Now I want to have upstream changes, like remilia has in their kernel
But after spreadtrum got renamed to Unisoc, it's really hard to find any information on it.
Can someone give the Spreadtrum common kernel repo or something? Would be cool
figured it out, just needed to clone upstream kernel source and cherry-pick some commits
Moderator Information,
Thread has been closed at OP's request.