Note2Core Kernel for Galaxy Note II N7100 / N7105 (LTE)
About this kernel
This kernel is built from pure Samsung GT-N7100 source, with modifications and tweaks to provide the best user experience in reliability, performance and stability. Built upon my experience firstly with NoteCore and then HydraCore for the original Note, as many of you know, I strive for the best
There are 3 versions of each kernel, for the International standard Note II GT-N7100 and the International LTE model GT-N7105.
This kernel has all debuging removed - logcat, android log, kernel log, schedular log, etc etc all disabled. This is for performance reasons, so if you are a developer this kernel is probably not for you
For the moment, exFAT formatted SDCards are not supported
Kernel Versions
There are three variants of the kernel for each device
STANDARD (STD) - 1.6ghz FSync() enabled
OVERCLOCK (OC) - 1.8ghz FSync() enabled
EXTREME (EX) - 1.8ghz FSync() disabled
The standard version, has no modifications to the processor clocks or voltages and can be considered a direct replacement for the stock kernel, and with FSync() enabled is completely stable
The OC kernel automatically scales up to 1.8ghz, with the proven voltages and stability from the perseus kernel (the same frequency table is used), and with FSync() enabled is completely stable
The EX kernel also scales to 1.8ghz, and has FSync() disabled. It offers by far the best possible performance. In rare circumstances you must be aware that this can lead to data corruption and the need to wipe / reflash a rom back to the phone. 99% of people will have no issues with this, as it has been extensively tested and proven on my previous kernel, but the risk is there. Dont go moaning to me if you lose your data and haven't got a nandroid backup!
Kernel Features
- Built from official GT-N7100T source, released 3rd Dec 2012
- 1.6 / 1.8ghz auto scaling
- Optimised VM memory settings, and global readahead
- init.d script support
- CPU Voltage support through 3rd party apps
- Modified GPU DVFS utilisation steps for maximum GPU performance
- No logging / debugging of any kind for higher performance
- Decreased CPU frequency transition latency
- CRC32 slicing-by-8 algorithm
- SLUB allocator
- PEGASUSQ governor (default, others available)
- NOOP schedular, (default, others available)
- lots of other minor tweaks and changes
- ODIN TAR and CWM ZIPS available for all versions
- Custom boot animation support (place animation zip in /system/media)
- TouchWiz roms only
Download - Current Version v2.10
For N7100 model phones - http://www.hecubus.com/filelist.php?dir=xda/note2core/7100
For N7105 (LTE) phones - http://www.hecubus.com/filelist.php?dir=xda/note2core/7105
Changelog
2.10
- Rebuilt from new N7100T source, released Dec 3rd
- All rotation issues in 4.1.2 fixed
- GPU steps reworked for better speed and responsiveness
- Built with linaro 12.11 GCC toolchain, with -O3 optimisation level
- lots of other internal changes
1.06
- Added triangle away support
- Maybe fixed rotation / sensors in newer 4.1.2 TW roms?
1.05
- Fixed all voltage setting and reporting problems (you may need to clear app data in your chosen voltage app)
- Swapped to arm-eabi- 4.4.3 google toolchain rather than arm-linux-androideabi- 4.4.3
- Some minor bigfixes
- Decreased bus frequency increase threshold
1.02
- Fixed all video record problems
- Added custom boot animation support
v1.01
- Fixed video playback issues
- Fixed gameplay issues
- preliminary support for exFAT - works on a usb mounting device
v1.00
- Initial release
GPL and Source
You can access my GitHub repositories here: www.github.com/glewarne
There are seperate repositories for the kernel, ramdiscs and build scripts
Credits and Thanks
sswagonman for being the bravest of souls, and a good friend
antiochasylum for his encouragement, help and support and friendship
phjz for coding help
pulser_g2 for his kind assistance with getting me up and running with github
Nazar78 for the bootanimation support scripts
Parts of my code changes can be attributed to the following - Entropy512, franciscofranco, hardcore, gokhanmoral, AndreiLux, Nazar78
If I have forgotten anyone, let me know and ill add you to the list!
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