ROMs Help build AOSP ROM from source for Xiaomi Redmi 2

[Android Question]

I'd like to learn to build an AOSP or AOSP based ROM for my device (Xiaomi Redmi 2). THe kernel source has not been released yet by the manufacturer. I'm stuck and don't know how to proceed even after looking at quite a few guides. Any help would be amazing!

 

[Guggy]

I recommend you join our forums to chat easier with other members who are building roms. If you do join, I'd like you to go onto the rom dev forums which I will move this to, and see if anyone answers. and if you register, you can reply back.

 

[Mikestony]

http://androidforums.com/forums/rom-development.2535/

This is the forum to check out once you get sorted with your account

 

[aaronsan]

I recommend you join our forums to chat easier with other members who are building roms. If you do join, I'd like you to go onto the rom dev forums which I will move this to, and see if anyone answers. and if you register, you can reply back.

I have registered. Could you move this to the ROM dev section and link the same?

 

[Mikestony]

I have registered. Could you move this to the ROM dev section and link the same?

Done
Good luck!

 

[mikedt]

Mediatek based device. Unfortunately that company, Mediatek, doesn't make their driver source codes available without draconian NDAs. Which means even if Xiaomi does release their kernel sources as required by the GPL, you still may not be able to build an AOSP ROM for it.

 

[aaronsan]

Mediatek based device. Unfortunately that company, Mediatek, doesn't make their driver source codes available without draconian NDAs. Which means even if Xiaomi does release their kernel sources as required by the GPL, you still may not be able to build an AOSP ROM for it.

Oh, no. I know how bad Mediatek is at being open source. The Redmi 2 has a Snapdragon.
http://www.gsmarena.com/xiaomi_redmi_2-6884.php
The phone's similar predecessor, the Redmi 1S (also a Snapdragon device) has it's kernel source released.
So I was wondering if that could be used with minor changes.

 

[isfrank]

hello, I recently got new Xiaomi Redmi 2. It's HM2014817 model.
I am new to custom ROM, but I have computer science background, I think I can provide some support.

 

[aaronsan]

hello, I recently got new Xiaomi Redmi 2. It's HM2014817 model.
I am new to custom ROM, but I have computer science background, I think I can provide some support.

That's great. I'm in CS too. Did you mean your model is HM 2LTE-SA– HM2014817 ?
Because mine seems to be HM 2LTE-IN– HM2014818. (source: http://www.bewell-connect.com/images/files/Liste_appareils_autoris__s.pdf ) Ctrl+F Xiaomi. I'm in India so I suppose 'IN" in the model ID is the country.

 

[isfrank]

yes.
I am in Taiwan. It seems that Singapore uses HM2014817, too.
Different models support different 3G/4G network band.
You can check this article. (search "Device ID")
http://en.miui.com/thread-78494-1-1.html

 

[isfrank]

In that article, it says there are only 3 device IDs (HM2014811 HM2014812 HM2014813), I think that is in China

 

[aaronsan]

In that article, it says there are only 3 device IDs (HM2014811 HM2014812 HM2014813), I think that is in China

Yes, I think only China models are in that post, or it hasn't been updated.
http://en.miui.com/forum.php?mod=viewthread&tid=103613&highlight=2014818
Seems India is a localised version and basically 811 because mine has the global 4G rom build number

 

[pirej]

Hi, i just got my new Redmi 2 LTE (HM2014811), if kernel sources come out or something.. ill try to build a rom for my Redmi 2 too.

 

[aaronsan]

Hi, i just got my new Redmi 2 LTE (HM2014811), if kernel sources come out or something.. ill try to build a rom for my Redmi 2 too.

There are ROMs available for HM2014811 on the miui forums. You can have a look. All I wanted was to learn to build a ROM, preferably AOSP from source.

 

[Deleted User]

I'd like to learn to build an AOSP or AOSP based ROM for my device (Xiaomi Redmi 2). THe kernel source has not been released yet by the manufacturer. I'm stuck and don't know how to proceed even after looking at quite a few guides. Any help would be amazing!

Actually they jyst released tge kernel soruce this week head over the xda or the website to get it

 

[pirej]

Actually they jyst released tge kernel soruce this week head over the xda or the website to get it

Can you please give me a link to the page saying that sources are released ?? i cant find it.

 

[Deleted User]

Can you please give me a link to the page saying that sources are released ?? i cant find it.

http://www.xda-developers.com/xiaomi-finally-releases-kernel-sources/ here ya go this is where ya need to go

 

[pirej]

Thank you Cyberdev for the link, i had seen that before, but it doesn't include the kernel for Redmi 2, will have to wait a little longer

 

[aaronsan]

How are there ROMs for the Redmi 2 if kernel source is not yet released?

 

[isfrank]

How are there ROMs for the Redmi 2 if kernel source is not yet released?

I think you can directly copy kernel image files from stock rom.
See CyanogenMod tutorial (see the "Examine boot.img and recovery.img" section) :
http://wiki.cyanogenmod.org/w/Doc:_porting_intro
But I guess if you directly use these pre-built kernel files, your operating system version will be limited by this kernel.

 

[aaronsan]

Is anyone working on this? I've managed to get the boot.img and recovery.img files from the device through a cwm backup.

 

[pirej]

Is anyone working on this? I've managed to get the boot.img and recovery.img files from the device through a cwm backup.

Lenovo A6000 has the same hardware and they already published their kernel sources
We can start from there for example

 

[aaronsan]

Lenovo A6000 has the same hardware and they already published their kernel sources
We can start from there for example

Are you talking about support.lenovo.com/us/en/products/phones/a-series/a6000/downloads/DS102033 Yeah it seems to be a good start. Would need some changes though. Did you start anything?

 

[pirej]

Yes, that's the one i was talking about, and yes, im trying something right now, but with a prebuilt kernel, just for testing and getting all of the necessary sources....
edit: im trying to build AOSP 5.1.0 , not 5.1.1 , ill have to update my sources later..

 

[aaronsan]

@pirej Will PM you