Hey all,
Just curious what the difference is between vanilla android and the one by cmod. I know they are both similar to the stock android OS but did not understand anything more than that. Can someone please elaborate?
Thank you.
not development related, please move to Q&A or General.
CyanogenMod is based on AOSP. AOSP = Android Open Source Project (android as google designed it). CyanogenMod makes improvements and changes and tweaks to AOSP.
it's all down to preference, but most people agree CM is an improved version of AOSP.
This is not a place holder however there is no actual mod yet for us to test yet this is a work in progress and I Encourage anyone and everyone to help out...
THE CONCEPT:
I asked Gokhan Moral if it was possible to back port the newer Mali drivers CM 10.1 to be used in official Samsung firmware...
Now for this to work we need matching Android library files compiled for the kernel drivers...
His intriguing reply was that the recently released Galaxy Note 8 uses newer Mali drivers (turns out not the same ones as CM10.1 but newer that official S3 firmware) and assuming the Note 8 is running Android 4.1.2 then there is a good chance the lib files WILL be compatible with current S3 firmware...
It turns out the note 8 firmware IS 4.1.2 based and the kernel sources contain the necessary drivers so...
Let's give this a crack eh?
GOALS:
#1 compile Mali drivers from Note 8 sources into existing Siyah sources thus creating a working kernel.
#2 obtain and identify necessary matching lib files from Note 8 firmware.
#3 transplant these libs into an S3 custom ROM and see if they work
#4 create and release a CWM zip which will flash both the custom kernel and lib files which can be used to mod any existing 4.1.2 Samsung firmware.
#5 crack a beer any bask in the satisfaction of a job well done...
PROGRESS:
#1 Budding developer and valued contributor to this forum psndna88 is already merging the necessary code with the latest Siyah sources. A test kernel should be conceived soon...
If anyone else wants to give this a go with other sources please do
#2 A request was made on the Note 8 forum and I have the necessary lib files ready to be back ported once the test kernel is ready...
If anyone has anything useful to contribute please PM me and follow this thread so once something is ready to be tested you can wet your appetite.
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Reserved...
Good luck,good work
But what's diffrent with note 8 and galaxy s3 firmwares?
LegendM said:
Good luck,good work
But what's diffrent with note 8 and galaxy s3 firmwares?
Click to expand...
Click to collapse
Well probably not a great deal in general however for this project we are interested in using the newer GPU drivers which are in the note8 firmware and apparently also the leaked 4.2.1 S3 firmware also.
The kernel side of things need to match the ROM lib files which are complied by Samsung using their closed xynyos sources.
Since the note 8 firmware uses the same android version as ours then HOPEFULLY we can use the kernel sources and transplant the lib files from the note 8 ROM and get it all working smoothly...
The question assuming this project succeeds is: Are the new Mali drivers noticeably better?
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They give a documented 15-20% performance boost in the Epic Citadel benchmark.
siyah kernel compiled with n8000 mali driver,
but currently following things may be broken:
-mali touch boost
-step5 of gpu freq
-gpu uv
Can codeworkx port those drivers to cm? (I mean source available, binaries)
GR0S said:
Can codeworkx port those drivers to cm? (I mean source available, binaries)
Click to expand...
Click to collapse
the ones we are trying to port are older than current CM 4.2.2 mali drivers, but newer than current stock sammy 4.1.2 drivers
attached is a diff file for changes in stock mali kernel drivers and siyah kernel mali driver for stock rom
and diff for lib files between N8000 and I9300 stock roms
i havent fully applied all changes in mali driver taken from N8000 inserted in siyah kernel source before compiling
Good idea guys.. I have a note 10.1 the n8013 model if it helps
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Hello,
Yank555 did something similar with his kernel ( he used the newer Kernel Sources from a Galaxy Tab and built a Galaxy S3 Kernel ), maybe you could send him a PM and ask for help ?
Best regards,
George
P.S: I could help you with the flashable packages and also do some testing if necessary.
OK it looks like the N8000 uses a very similar version of the Mali drivers so there might not be much to gain from this project
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OK, I know that most people use the X for a pure, unmodified version of Android. I respect that. I believe that too, but if I could squeeze just a tiny bit more performance out of this device, it would be great. Is anyone here experienced with kernel development and wants to help develop a kernel for our beloved device?
@faux123 is supposed to develop one eventually. Otherwise CM uses a custom kernel for their ROM. I'm waiting for something compatible with stock though.
It looks like samsung finally released source code for g900h model of this device. This model has a very poor development status compared to other models. So anyone who can come forward regarding this might help the users a lot! Especially with AOSP and CM roms as stock roms are already in progress of development.
So any dev who can come forward or help the people who are developing would be really great
Here is the link - http://opensource.samsung.com/reception/receptionSub.do?method=sub&sub=F&searchValue=g900h
I think it was old one
BOG4 & BOG6 are the newest
Hey bros,
I like to understand who is actually developing and maintaining the cm rom and kernels for our device? Ethan Chen, David Hacker,.. and how do they share the distribution of tasks in the different device and kernel repos like motorola_ghost and msm8960dt?
I was really impressed as dhacker pushed a highly customized and updated kernel for cm13 (there is one for cm12 too) into android_kernel_motorola_msm8960dt-common recently, but when and how will this work come to life? For me it looks like that the released rom or kernels for Moto X so far mostly neglected these source, so for what are the msm8960dt repos used atm?
Some clarification would be great.
regards
As far as I know,
android_device_motorola_msm8960dt-common - http://review.cyanogenmod.org/#/q/project:CyanogenMod/android_device_motorola_msm8960dt-common : This is the common device repo for msm8960dt motorola devices released in 2013 (Moto X, droid mini/maxx etc)
android_kernel_motorola_ghost - http://review.cyanogenmod.org/#/q/project:CyanogenMod/android_kernel_motorola_ghost : This is the kernel for Moto X. Not common with other msm8960dt devices
And a lot of other code is taken from CAF-8960 branches from Qualcomm - http://review.cyanogenmod.org/#/q/topic:qcom-bringup-8960
I may be wrong since all these are simply observations, so if someone with better knowledge please correct me