I don't know much about the architecture of these MT based Android phones yet. We would need some source for the actual baseband part of the code in order to port osmocom-bb. I was able to quickly search for mt6572 kernel sources but that's not what we need. I also found custom ROMs like CyanogenMod. That might get us a bit further. Also there are "scatter" files that newer MT based devices use as a sort of map for fastboot flashing images onto a device (I think, not much experience here). So that might give a clue as well. This one has U-Boot! That might be helpful.

https://github.com/GoldRenard/AllegroROM_4.2.2_mt6572/blob/master/HWPackage/...

So if you can purchase a 6572 based board and get enough source that might be what is needed to make progress. If you find a link to something share it I suppose.

I'm mostly focused on porting osmocom-bb to 626x at this point and figuring out how to get layer1+modem built as nuttx-bb... but... as I mentioned I work slow so if others push forward with a newer chip that would be cool. If we could end up with something like AOSP + osmocom-bb image for RILD I suppose that might be fun. I am more interested in NOT using Android for what it's worth.

-Craig

-------------------------------------------- On Thu, 4/13/17, bruce lee bbsoo7@live.com wrote:

Subject: Re: Fun with the MTK 6573 Baseband (Patching / Replacing) To: "baseband-devel@lists.osmocom.org" baseband-devel@lists.osmocom.org, "Craig Comstock" craig_comstock@yahoo.com Date: Thursday, April 13, 2017, 1:49 AM

maybe  it is easiest  for developing on some boards which has UART port to look it boot up message.

some mt6572 based boards one can find on China market. they event can share code with us if we buy it.

it is android based.

so should/can we make a osmocom-bb based BP for this android board? or other smartphone?

thanks RZ

From: Craig Comstock craig_comstock@yahoo.com

Sent: Thursday, April 13, 2017 3:21 AM

To: baseband-devel@lists.osmocom.org; bruce lee

Subject: Re: Fun with the MTK 6573 Baseband (Patching / Replacing)

I don't have the files mentioned in that patch. They look very much like some part of an Android source code tree. So far I am working mostly not with Android at all... only osmocom-bb, nuttx, fernly and fernvale-nuttx.

My work on the newer MT chip in the ZTE Obsidian is a ways down the road. One thing that was VERY encouraging is that I have tested the beginnings of interaction with it's bootloader (as in the fernly project)

and it seems at least the initial MSG and ACK from the bootloader works the same as for fernly types of MT chips (6260/6261). So that might be a good starting point in terms of experimenting/fuzzing/???

Maybe you could find a custom rom source tree and find those files that are being patched.

In terms of participating in my project, I have a github repo and am primarily using the fernvale board I purchased from sysmocom as well as some mt6260/6261 based watches and the Seeed Studio RePhone.

So I'd say go get one or more of those things and start hacking on fernly, fernvale-nuttx, osmocom-bb and nuttx-bb (combo of osmocom-bb and nuttx).

I don't work too hard on the project. This branch is my latest not-working work in progress:

https://github.com/craigcomstock/osmocom-bb/tree/feb-22-2017-mt62xx-wip

craigcomstock/osmocom-bb

github.com

Contribute to osmocom-bb development by creating an account on GitHub.

I have since changed my strategy and so this branch will likely rot. :( But it might give some indication of what I'm up to.

-Craig

--------------------------------------------

On Wed, 4/12/17, bruce lee bbsoo7@live.com wrote:

Subject: Re: Fun with the MTK 6573 Baseband (Patching / Replacing)

To: "Craig Comstock" craig_comstock@yahoo.com, "baseband-devel@lists.osmocom.org" baseband-devel@lists.osmocom.org

Date: Wednesday, April 12, 2017, 9:39 PM

Craig,

do you have the files mentioned at

https://github.com/shadowsim/shadowsim/blob/master/mdlogger.patch

and for your project, seem very interesting, and I would

like to participate in.

thanks

RZ

From: Craig Comstock

craig_comstock@yahoo.com

Sent: Tuesday, April 11, 2017 11:35 AM

To: baseband-devel@lists.osmocom.org; RootZero

Subject: Re: Fun with the MTK 6573 Baseband (Patching

/ Replacing)

My target was Mt6735 in a Zte Obsidian. I chose it for

4g lte. I could root one and see if similar techniques work.

My hope was to leverage leaked source for mt626x and hope to

work my way up the chip models. I am currently working on

porting osmocom-bb

and nuttx-bb to fernvale/rephone/mt626x.

On April 11, 2017

4:39:46 AM CDT, RootZero bbsoo7@live.com wrote:

Markus and all,

I am very interesting in this

project/hack.

can you share

more information with US?

I

searched lots web pages and do not find the source of

mdlogger.cpp file.

I do

have the source code of "modem.img" if you want

please let me know.

thanks

RootZero

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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I'm

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