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[Q] Android kernel programming

Hi All
I am a newbi to kernel programming , especially to android kernel.
Can you tell me some good places on the net , that can be great sources for getting in touch with that thing.
I want to become familiar with the android kernel , dalvic etc. ( I speak english and german )
thanks in advance.
Sz_gergo

I am too interested in this subject. I am learning slowly as and when I get time.
kernelnewbies.org
Generally good resource for starting out learning linux kernel
(Which is what the android is built off of)
android.git.kernel.org
Android Kernel Source
lwn.net/Kernel/LDD3/
Online guide to driver development among many other related topics.
pdk.android.com
This guide provides an under-the-hood introduction to the Android platform, and is designed for platform developers and manufacturers building Android-powered devices.
Sorry for not providing the links...xda won't allow me to post links since I have less posts.

Android kernel
Dear All
as i understand, the android kernel source, what you can download from Google , should be enough for building a new kernel to some phone.
If i am right, does that mean that the Linux kernel sources are already included?
Or am i totally wrong?
Thanks for your answers

I am also interested in learning the Kernel Development and ROM development. Can Any one Help.

sz_gergo;11673408 begin_of_the_skype_highlighting 11673408 end_of_the_skype_highlighting said:
Dear All
as i understand, the android kernel source, what you can download from Google , should be enough for building a new kernel to some phone.
If i am right, does that mean that the Linux kernel sources are already included?
Or am i totally wrong?
Thanks for your answers
Click to expand...
Click to collapse
I have the answere for the question above.
After i have inspected the Android kernel sources, it came out, that i have been right.The only source you need for creating a new kernel for a phone, is the complete android kernel.
The linux kernel is allready included.
I think if you want to build a kernel, specific for your phone. you have to overwrite the default dirs with the specific sources of your phone. If it is not allready done by others.

Android Kernel
Hi,
We need to distinguish between Linux and Android. Android was forked from Linux, and now those are managed as separate products. Android usually takes the updates from linux, but there are features in Android which Linux refused to get (such as wakelocks).
So the android kernel source includes all needed to build a working kernel.

porting cm to a new device - whats needed and difficulties

Hey,
i'm just curious about what the title describes. First of all.
What do i really need:
-kernel sources
-binary blobs (extractable)
-recovery / boot.img (extractable)
Let us just talk about the fairphone 2. Additional to the things mentioned we get the full source code of the OS (which i do not need?).
Where do the difficulties lie? For my understanding we just take the kernel sources, the official cyanogenmod (e.g.) source code, the binary blobs and the recovery / boot.img.
How difficult would it be to port Cyanogenmod to the fairphone 2.
Why is it difficult to port a device with existing (again cyanogenmod just as an example) cyanogenmod to a newer Cyanogenmod (Android) version?
I ask this to estimate/evaluate/judge (don't know the right term) the effort needed to do this. I think i'd be able to do that if i put enough work into it (i "speak" c and java), but i just need some answers.
Especially for example why it is more difficult to port Android 6 instead of Android 5 (which is the currently running Android version)
Thanks!
bigCrash

Has nobody an answer? Just one?
Im specifically interested in why it is more difficult to port e.g. cyanogenmod if there is only an older version of stock android and how important the kernel is? Why do we need kernel sources? Can't one just self-compile a kernel.
Where are the limits if i have a device running 4.2. Why can it possibly run 5.1 but not 6? Is the kernel limiting? Or only the effort to realize such a thing.
Thanks!
bigCrash

What is necessary if I want to compile a ROM?

Hi guys. 2 months ago I've came into Android World deeper than before and now I'm very fascinated. I downloaded linux, all the necessary files to compile a rom but I still don't understand some things.
My device is Redmi Note 2 and I use stock MIUI 7. As we all know mtk and/or xiaomi haven't released kernel sources (6795) so developers have to think hard how to make a rom. And there are my questions. Does kernel source is really necessary? What if I compile rom successfully and then port boot.img from stock? Will it work? However developers made some roms based on LP for this device. And I read that I need device tree and vendor, which doesnt exist for redmi note 2 or I still can't use github.
Second question which I have is: does compiling for 64 bit CPU differ from compiling for 32 bit CPU (like 6592)? If yes, could you give me some tips?
Ohh I think you can understand what I wrote
Thanks in advance and please dont blame me for silly questions

If you are looking to compile roms then you picked the wrong device to do it. They are the worst with kernel source. You can't completely compile a rom but use a patch system that does most of the work.
Yes it is different. There are some Tuts around but they are few as most don't use that type of chip.
If you really want to learn to develop then I would suggest getting a different device. One that respects the copyright and gpl laws.

zelendel said:
If you are looking to compile roms then you picked the wrong device to do it. They are the worst with kernel source. You can't completely compile a rom but use a patch system that does most of the work.
Yes it is different. There are some Tuts around but they are few as most don't use that type of chip.
If you really want to learn to develop then I would suggest getting a different device. One that respects the copyright and gpl laws.
Click to expand...
Click to collapse
Thank you for your advices. I have HTC desire 310 and I found the kernel sources. I know what I'll do in my free time

Monsterlevel said:
Thank you for your advices. I have HTC desire 310 and I found the kernel sources. I know what I'll do in my free time
Click to expand...
Click to collapse
To compile a rom u need kernel source, device tree and proprietary, bye

Proprietary Binary Compatibility

Hi all, this is a question that belongs in the dev forums, mod please move if you'd like.
I'm trying to compile a ROM from AOSP source for my tablet and need to get the device's proprietary binaries. What is the success rate of using proprietary binaries from an older version of Android (5.x) on a newer build (7.x)?
My device (T330-NU) only has binaries available for 5.x. Logically I would think that I can't use these on newer Android builds.
If the answer is that I cannot use the binaries from 5.x in my 7.x build then how do unoffical ROMs such as CM14 for my device seem to work? Are these binaries/drivers created from scratch? In these situations do the developers use a generic driver?
tyia

Bump since moved to another forum

Help building Kernel Module

Hello All,
I am new in the android world, but am fairly experienced on the Linux side of things. I would like to build a loadable kernel module for a specific version of JB (4.2.2_r1) and have some general questions.
As I understand it, the process should be as follows:
Get kernel source for JB, compile kernel, then compile kernel module. Please correct me if I am wrong
I can't seem to find the kernel source for this, can anyone point me to exactly where it is?
Thanks