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Creating a rom based off CM(Galaxy S4), How ?

A bit of infos before starting this thread. I'm using a Samsung Galaxy S4 Canadian, I have a high end computer(maybe that helps for coding,stuff like that) and I have "medium" knowledge on rooting/flashing,etc. I am a great designer, well for myself, I think i'm good. So I can edit or create icons and themes for new rom!
I say medium, because the only thing I really know about this kind of stuff,is rooting,flashing,installing roms and pretty much that honestly.
I already downloading the Android SDK to test those custom roms i'd like to create. I thought of doing like a couple of guys on here, using the CM Source? and just adding stuff,etc.
--
What i'm looking to do, is creating a rom based of CM for the Galaxy S4 and just in general a little side project for myself and adding some infos in my head; Some may laugh because of the lack of knowledge, but hey! we all started somewhere
I'm asking the community of dev's or just users, do you have some threads or some stuff to download to "Start" this project ?
Some things I should read before, I won't test rom's on my phone as it's a daily phone, i'll use the emulator instead(AVD or SDK) and i'm already searching on how to run it.
If you have any useful youtube videos i'll gladly accept them
I found a tutorial on how to build a rom but for the Nexus 4, I guess it's the same process but different sources ?
I'll search for the sources of Cm for the Galaxy s4 but if anyone reads this thread and knows where to get it, please link me!
Thanks to the community, this may also be useful for other users. Thanks!

Okay, I will help
1st off, let me teach you some basics.
1.) You cannot test roms on the android sdk, the android sdk has nothing to do with roms, its for building apps and java programming. It will not help you with anything if an issue goes wrong in a rom, well only the adb (android debugging bridge) for taking locats.
2.) You cannot compile a rom on windows, only linux, preferably ubuntu. So you need to just download cm11 for your device and extract the rom zip.
I will tell you more later, but its like 1pm here Goodnight

Wondermedia WM8880 SoC TABLET's - JB/KK ROM and KERNEL+Recovery's Development

Code:
#include
/*
* I am not responsible for bricked devices, dead SD cards, thermonuclear
* war, or the current economic crisis caused by you following these
* directions. So don't be an *** ****
*/
hi.. i'm already started make some modifications on ROM with other Brazilian DEV's for "Evertek S.A - SKMtek Genesis Tab GT7305"... we already found the source kernel from another Netbook or Development Board PC who uses the same SOC... but nothing already have been maked to kernel, we use the provided kernel from stock (Kernel 3.4.5+)... and about the ROM we already have two custom ROM's... One is Stock Modded (4.2.2) and another is KitKat Ported ROM from another Evertek Device... *Portuguese-Brazil Language Site/Forum
And we already make some modifications to this KK port...
- ROOT
- BusyBox
- Init.D support
- Build.Prop Mods
- SuperUser
- zipalign apps after boot
.. and other mods.
we already make too much on ROM but nothing about kernel... we want make a better kernel with optimizations and a better TCP/Clock Table, More Governors , More I/O Scheduler and maybe Overclock to 1600mhz to start after have a custom Kernel booting...
Now we need someone who understand about recovery's like CWM or TWRP and Kernel Compilation better than me to we can start make something awesome =D i think this can be used to another company's/Chinese tablets too, using the same SOC (WM8880) evidently... . . . (Found^^Working^^Recovery's)
i can't start testing here because if i flash this kernel using the Stock Recovery (WonderMedia Recovery tool) maybe i can possible brick my tablet... so if someone understand about CMW recovery to start would be nice =D

Update Progress / ChangeLog ¬
Code:
# 25/12:
- [STRIKE]Found Possible match [URL="http://forum.xda-developers.com/showthread.php?t=2305268"]CWM port[/URL] from [URL="http://forum.xda-developers.com/showthread.php?t=2216390"]Asus MeMo Pad 7{ME172V}[/URL] on XDA Forum[/STRIKE] #NOPE...
- FOUND WOKING [URL="http://blog.hadi-cpu.com/2013/09/cwm-recovery-6036-w8850-rc2.html"]CWM Recovery[/URL] from Malasya Blog from Generic WM8850 SOC tablet , Founded [URL="http://blog.hadi-cpu.com/2013/10/twrp-touch-wondermedia-wm8850-jb-version.html"]TWRP recovery[/URL] too but not tested (Thanks to #Rollidark to notify me about and #osinaldi to discover that from malasya blog) [Mirrors -> [URL="https://www.4shared.com/rar/2POyc0B0ba/CWM_WM8850_NSFAT-RC2.htm?sop=true"]CMW[/URL] -> [URL="https://www.4shared.com/rar/rJBfUTQF/TWRP-JB-NSFAT-WM8850.htm"]TWRP[/URL]] // [URL="https://www.facebook.com/groups/NewSmartFrenAndroTab/"]Facebook Group of Recovery Developers[/URL]
- Studying some way to introduce the missing Touch driver to kernel from [URL="https://gist.github.com/psachin"]psachin Github[/URL]|[URL="http://cdn.liliputing.com/wp-content/uploads/2013/01/rock_02.jpg"]apc-rock-II-[/URL]|[URL="https://github.com/psachin/apc-rock-II-kernel"]kernel[/URL] how already modded the Source to work with [URL="http://tinyurl.com/oqxmuam"]Generic Netbook[/URL] who uses the same SOC
-- Merry Christmas to #ALL
# ?? to 23~24/12:
- ROM JB and KK + ADV. Patch developed by Brazilian Dev's team
- found Source Kernel to WM8880 SoC
Brazilian Developers who already help this projects from forum - genesiseries :
Code:
# KK ROM:
- #paulomsilva2006 {KitKat ROM Port}
- #Rollidark {KitKat Patch}
- #Wcfuria
- #? - Pedro Alves
- #? - Pedro Victor
- #? - Walter Moretti
- #? - Moises Teixeira
Code:
# JB Stock ROM:
- #ylukasy {ROM Dev.}
- #Rollidark
- #paulomsilva2006
- +?
if i forget someone.. please comment below :highfive:

Reserved

wow there's only a handful on and off development going on for this SoC, I still keep my WM8880 tablet just in case somebody made a breakthrough in doing Custom ROM or even getting real ubuntu/debian to boot natively... are you still on this?

funtikar said:
wow there's only a handful on and off development going on for this SoC, I still keep my WM8880 tablet just in case somebody made a breakthrough in doing Custom ROM or even getting real ubuntu/debian to boot natively... are you still on this?
Click to expand...
Click to collapse
just a few Brazilian and Malasya Developers still make progress with this SoC... if you want to try install the custom ROM´s i have shared upper topic.. it will be by your won and I am not responsible for bricked devices...
i´m already started make progress with Custom Kernel but i need found the touch screen driver source and re-work the sound driver(Alsa Drivers...) and compile the recovery with kernel too.. to than have some trust on my work to flash it on tablet =#
:highfive:

DvDwx. said:
just a few Brazilian and Malasya Developers still make progress with this SoC... if you want to try install the custom ROM´s i have shared upper topic.. it will be by your won and I am not responsible for bricked devices...
i´m already started make progress with Custom Kernel but i need found the touch screen driver source and re-work the sound driver(Alsa Drivers...) and compile the recovery with kernel too.. to than have some trust on my work to flash it on tablet =#
:highfive:
Click to expand...
Click to collapse
meh, its my rom testing ground anyway not really worried .. i actually have the tablet connect directly from the battery wires(the battery removed) to the adapter(usb)... anything is better than nothing for the development hehe...wait by Malasya do u mean Malaysia? whos that developer lol..

funtikar said:
meh, its my rom testing ground anyway not really worried .. i actually have the tablet connect directly from the battery wires(the battery removed) to the adapter(usb)... anything is better than nothing for the development hehe...wait by Malasya do u mean Malaysia? whos that developer lol..
Click to expand...
Click to collapse
i mean Malaysia.. the country... because i don't have found the real developer.. only the Facebook's group where it have been shared... i write too fast and don't check if i write it correct too...
--
i Already compile the kernel with CMW recovery and flashed on tablet ... but i need find the Touchpad driver to make he work properly... i stay getting some other minor issues on logcat/kmsg reports...
but i already test four touch drivers and anyone works... only OTG stay working.. that is the problem on developing the kernel without the official source release by the producer company... maybe i will need close this developing project because that =/

DvDwx. said:
i mean Malaysia.. the country... because i don't have found the real developer.. only the Facebook's group where it have been shared... i write too fast and don't check if i write it correct too...
--
i Already compile the kernel with CMW recovery and flashed on tablet ... but i need find the Touchpad driver to make he work properly... i stay getting some other minor issues on logcat/kmsg reports...
but i already test four touch drivers and anyone works... only OTG stay working.. that is the problem on developing the kernel without the official source release by the producer company... maybe i will need close this developing project because that =/
Click to expand...
Click to collapse
what a coincidence , I was wondering today when you will reply lol
ah I see too bad, maybe you will share it at techknowme forum, ... wow Malaysian ?, Im asking because I'm Malaysian, can you pm me the link where its shared?

DvDwx. said:
i mean Malaysia.. the country... because i don't have found the real developer.. only the Facebook's group where it have been shared... i write too fast and don't check if i write it correct too...
--
i Already compile the kernel with CMW recovery and flashed on tablet ... but i need find the Touchpad driver to make he work properly... i stay getting some other minor issues on logcat/kmsg reports...
but i already test four touch drivers and anyone works... only OTG stay working.. that is the problem on developing the kernel without the official source release by the producer company... maybe i will need close this developing project because that =/
Click to expand...
Click to collapse
please continue developing this project..i have using acer b1 740 and it dont have android 4.4 update

tuyenat3 said:
please continue developing this project..i have using acer b1 740 and it dont have android 4.4 update
Click to expand...
Click to collapse
man... i just don't want blame anyone but... to we can do something to your tablet we need the kernel source and that don't stay open to developers... on this Chinese tablets we have some little configurations to can work with... but the custom kernel project i need to abandon for two reasons... first i don't have much time to can work to create a stable and functional custom kernel to everyone... second i don't have a kernel source compatible with tablets... what i found is from a electronics engineering Project computer Board ... and to it can fit on tablet is missing too much drivers compatibles with to can work smoothly and functional... someday if i found a new source maybe i can try comeback developer something to that =#

please continue developing this project
I use a genesis 7305 his kernel is very poorly optimized would like to make this usable tablet sorry for my bad English I use Google translator ;-;

2021... I tried to put a Chinese rom, but I brick the tablet, it only responds to fastboot, when I put the sudo command fastboot flash:raw boot uzImage.bin ramdisk.bin and plug in the charger and press power it appears a genesis screen.
Boot FOSSEE-OS from SCARD | FOSSEE-Laptop
laptop.fossee.in
GitHub - FOSSEE/FOSSEE-netbook-kernel-source: A low cost fossee-laptop based on wm8880 ARMv7 SoC
A low cost fossee-laptop based on wm8880 ARMv7 SoC - GitHub - FOSSEE/FOSSEE-netbook-kernel-source: A low cost fossee-laptop based on wm8880 ARMv7 SoC
github.com

A Cheap Device to learn android ROM building[India]

Hello Guys.
I want to Buy a Cheap Device(Which have available sources) to learn android ROM Building.
My Budget is Very Tight:crying: Rs.8000
Please Suggest me a Good Device.
Thanks in Advance.:good:

Rumorbox33 said:
Hello Guys.
I want to Buy a Cheap Device(Which have available sources) to learn android ROM Building.
My Budget is Very Tight:crying: Rs.8000
Please Suggest me a Good Device.
Click to expand...
Click to collapse
Lol, You call Rs. 8000 budget a tight budget??
That's more than enough..
Nowadays, most devices release their kernel source including device trees (Though not proper)..
As far as I can remember, I'll suggest you to buy Yu Yunique, which is quite new as of now and has very less custom ROMs as of now and has sources released..
Or you can choose any other device as you wish.
All you should do is search hard if the source is released for that phone. (All u need to do is Google to find out)
And, there are many tutorials in XDA which will easily help you learn about ROM development.
Note:
ROM development needs some/little Android knowledge depending upon what you're going to do.
To build CM from source, you need a hell lot of knowledge.
You also need a hell lot of time and patience.
To build a custom ROM based on CM, you more or less just need to follow the instructions given in that custom ROM's website.
Also you'll need a fast internet to download sources which will be like 13-16GB (this is for each ROM base)
But, porting a ROM can be quite easy compared to building from source..
So, if you're kind of new, better learn something about Android and how it works, before you buy a phone simply for development purpose, to avoid repenting in the future that you've wasted your money..

GokulNC said:
Lol, You call Rs. 8000 budget a tight budget??
That's more than enough..
Nowadays, most devices release their source including trees (Though not proper)..
As far as I can remember, I'll suggest you to buy Yu Yunique, which is quite new as of now and has very less custom ROMs as of now and has sources released..
Or you can choose any other device as you wish.
All you should do is search hard if the source is released for that phone. (All u need to do is Google to find out)
And, there are many tutorials in XDA which will easily help you learn about ROM development.
Note:
ROM development needs some/little Android knowledge depending upon what you're going to do.
To build CM from source, you need a hell lot of knowledge.
You also need a hell lot of time and patience.
To build a custom ROM based on CM, you more or less just need to follow the instructions given in that custom ROM's website.
Also you'll need a fast internet to download sources which will be like 13-16GB (this is for each ROM base)
But, porting a ROM can be quite easy compared to building from source..
So, if you're kind of new, better learn something about Android and how it works, before you buy a phone simply for development purpose, to avoid repenting in the future that you've wasted your money..
Click to expand...
Click to collapse
I have knowledge about android That's why i am asking:good:
So,What about Redmi 1S ?
Should i buy That ?

Rumorbox33 said:
I have knowledge about android That's why i am asking:good:
So,What about Redmi 1S ?
Should i buy That ?
Click to expand...
Click to collapse
Yes, it's OK.
Kernel sources are released: http://en.miui.com/thread-73469-1-1.html

[Completed] Getting into android.

Hi,
So I've been getting into android the past month and really started liking it. I have however some questions about how an android (or Linux) operating system works. I also have some questions about how the Kernel and the OS work together and what I need to know about it before I start learning more about and getting into developing.
1. Does the Kernel command the OS or the other way around?
2. Can I create a custom Kernel specifically for an OS?
3. How much experience do I need to create a custom Kernel and is it phone specific in the sense that if I make Kernel A for phone A will it be easier to create Kernel B for phone B?
I'm not native speaking, so please ignore any grammar issues.
I'd love to hear something from you all!
Kind regards,
Pinnekeshaar

pinnekeshaar said:
Hi,
So I've been getting into android the past month and really started liking it. I have however some questions about how an android (or Linux) operating system works. I also have some questions about how the Kernel and the OS work together and what I need to know about it before I start learning more about and getting into developing.
1. Does the Kernel command the OS or the other way around?
2. Can I create a custom Kernel specifically for an OS?
3. How much experience do I need to create a custom Kernel and is it phone specific in the sense that if I make Kernel A for phone A will it be easier to create Kernel B for phone B?
I'm not native speaking, so please ignore any grammar issues.
I'd love to hear something from you all!
Kind regards,
Pinnekeshaar
Click to expand...
Click to collapse
Hello,
1) Yes
2) Yes
3) You really need to have an in depth knowledge of your device, linux kernel and you should know how to use git. Depending on how you want to get started, you can add more governors, hotplugs, upstream updates and more..
Regards
Vatsal,
Forum Moderator.

Thanks for your reply and also aswering my questions. I have no more questions.

[KERNEL] Major Linux Updates

Hello, I decided to come up with a project that aims to port higher Linux versions. When I say higher Linux versions, I mean those that are Linux 3.5 and up. The goal is to port Linux major updates as high as I can, but the main priorities are one that are LTS like Linux 3.10, 3.14 or even 3.18.
Only Android 7 will work on non-LTS versions. Oreo/pie and Android 10 support will be added only on LTS versions to lessen the conflicts when merging non-LTS versions.
What works:
Boots
Battery
Charger
Touchscreen
Display
USB
Sound
Buttons
Deep sleep
Camera
Video playback
Fingerprint
The rest of the sensors
WiFi
Bluetooth (works on Linux 3.7 and up)
Internet connection
Anything else I can't mention
What doesn't work:
You tell me
Drivers that can't be updated (yet) due to them being heavily modified by CAF and Samsung:
USB
Sound
MMC
Newer versions are more stable than the other due to the fact that I fix more bugs with every update.
The highest version as of now is Linux 3.8. I can only merge major updates during weekends due to my work.
Sources:
Linux 3.5
Linux 3.6
Linux 3.7
Linux 3.8
Linux 3.9
Feel free to open up issues and submit pull requests
It is highly recommended to delete mpdecision from /system/bin/ before flashing

Reserved

i don't understand what is this, is there some wiki i can read?

saikyom said:
i don't understand what is this, is there some wiki i can read?
Click to expand...
Click to collapse
These are kernel updates. Our device comes with Linux 3.4, but I've managed to update that up to 3.8

darrendude1 said:
These are kernel updates. Our device comes with Linux 3.4, but I've managed to update that up to 3.8
what are the benefits of updated kernel..cheers
Sent from my Unknown unknown using XDA Labs
Click to expand...
Click to collapse
Read these:
https://kernelnewbies.org/Linux_3.5
https://kernelnewbies.org/Linux_3.6
https://kernelnewbies.org/Linux_3.7
https://kernelnewbies.org/Linux_3.8

@pascua28
What a Huge Task! As Well as a Pain on the Ares!
Now, I do Have a few Q's for you.
1 IS this "Kernel Patch" Just for your beloved Galaxy S5's ?
2 Will this be for the "Basic" Kernel in an OS (e.g. LineageOS) ?
3 Wouldn't this hurt some of the "Custom Kernels" that we currently have and use?
And of course I must ask, how far do you intend to take this (e.g up and coming 5.7 ) ?
That Said, I am in! I have downloaded all the Kernels . Mostly to compare your changes. Have also saved your GitHub page.
Am wondering though, With some of these "Custom" Kernels..... Wouldn't we see much faster , smoother , and hopefully more Darn Battery with some of the Tweaks that we have with them? Or at least with some kernel manager?
Or, would these break those Kernels (now thinking about it)?
Certainly will be watching this!
Again , this is a huge task to undertake! Sure would love to see 4.1 and above for our phones. Maybe with Your updated Kernel, we could really see some major changes with our phones.... Plus, hopefully easier to Port into the likes of Android 10! ... or Of course jumping a bit here, and a bit positive, but Android 11 !
Good luck sir

godofsalt said:
@pascua28
What a Huge Task! As Well as a Pain on the Ares!
Now, I do Have a few Q's for you.
1 IS this "Kernel Patch" Just for your beloved Galaxy S5's ?
2 Will this be for the "Basic" Kernel in an OS (e.g. LineageOS) ?
3 Wouldn't this hurt some of the "Custom Kernels" that we currently have and use?
And of course I must ask, how far do you intend to take this (e.g up and coming 5.7 ) ?
That Said, I am in! I have downloaded all the Kernels . Mostly to compare your changes. Have also saved your GitHub page.
Am wondering though, With some of these "Custom" Kernels..... Wouldn't we see much faster , smoother , and hopefully more Darn Battery with some of the Tweaks that we have with them? Or at least with some kernel manager?
Or, would these break those Kernels (now thinking about it)?
Certainly will be watching this!
Again , this is a huge task to undertake! Sure would love to see 4.1 and above for our phones. Maybe with Your updated Kernel, we could really see some major changes with our phones.... Plus, hopefully easier to Port into the likes of Android 10! ... or Of course jumping a bit here, and a bit positive, but Android 11 !
Good luck sir
Click to expand...
Click to collapse
1. This is a full Linux upgrade. Nobody has ever done that to our beloved S5 cause it's a truckload of work
2. Uhm, I don't know. LineageOS is very strict on what kernel base to use, but I may propose to use this as a base when I reach 3.10
3. This project might be a good base for custom kernels since it is more updated and I will use this base too for my future custom kernels
4. As far as I can and as long as it works. Of course, I don't wanna die yet by not going too far.
Certainly, it won't break any kernel managers. You can even clone the latest source and add some custom features. It's up to you, but right now, in the process of upgrading, I won't be adding any custom features
Regards

pascua28 said:
1. This is a full Linux upgrade. Nobody has ever done that to our beloved S5 cause it's a truckload of work
2. Uhm, I don't know. LineageOS is very strict on what kernel base to use, but I may propose to use this as a base when I reach 3.10
3. This project might be a good base for custom kernels since it is more updated and I will use this base too for my future custom kernels
4. As far as I can and as long as it works. Of course, I don't wanna die yet by not going too far.
Certainly, it won't break any kernel managers. You can even clone the latest source and add some custom features. It's up to you, but right now, in the process of upgrading, I won't be adding any custom features
Regards
Click to expand...
Click to collapse
Well, Thank You. for the reply, as well as, all the information.
YES your project is a HUGE amount of work. Good guess, IS , you seem to want to take on this challenge! Good for you...
Yes, I do intend to really follow your project. Really looking forward to the great results that I hope we (you) can achieve !
Awesome...
Thanks

Hi guys! Linux 3.9 is up!

this is amazing work!
thank you very much for it.. I bet it's ugly as hell, but you learn a lot..
I'm patiently waiting for 3.10.0 since that's required by docker (running debian using Linux Deploy)

shmizan said:
this is amazing work!
thank you very much for it.. I bet it's ugly as hell, but you learn a lot..
I'm patiently waiting for 3.10.0 since that's required by docker (running debian using Linux Deploy)
Click to expand...
Click to collapse
Yeah, very tedious and requires a lot of skill

This is huge. Thank you for doing this, I will definitely be following this

pascua28 said:
Yeah, very tedious and requires a lot of skill
Click to expand...
Click to collapse
Yes, as well as time, the correct machine and layout....
Plus I believe it requires most patience than what I have!
BTW... This is great work, have not seen any issues on my S5..... (yet, but don't think that will happen though)
Thank you!
Sent from my Galaxy S5 using XDA Labs

Is this working on 5+ (katcc6)?

robla1000 said:
Is this working on 5+ (katcc6)?
Click to expand...
Click to collapse
Nope, S5 only. And at this point klte only until @pascua28 is finished bringing the kernel up to 3.10

Only working properly is klte, for now. Other variants might work but with bugs. Will fix for other variants when we get to 3.10

3.5 to 3.9 didn't work for me,I have klte

didn't work?
I ran 3.8 for weeks without any issues.. what exactly does not work?

many reboot ,i couldn't use

vlad3647 said:
many reboot ,i couldn't use
Click to expand...
Click to collapse
It's not for higher Android version.. If you have Android 9 or 10 then wait for version 3.10