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(a)live.com> wrote:
Subject: Re: Fun with the MTK 6573 Baseband (Patching / Replacing)
To: "baseband-devel(a)lists.osmocom.org"
<baseband-devel(a)lists.osmocom.org>rg>, "Craig Comstock"
<craig_comstock(a)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(a)yahoo.com>
Sent: Thursday, April 13, 2017 3:21 AM
To: baseband-devel(a)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(a)live.com> wrote:
Subject: Re: Fun with the MTK 6573 Baseband (Patching /
Replacing)
To: "Craig Comstock"
<craig_comstock(a)yahoo.com>om>,
"baseband-devel(a)lists.osmocom.org"
<baseband-devel(a)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(a)yahoo.com>
Sent: Tuesday, April 11, 2017 11:35 AM
To: baseband-devel(a)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(a)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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with the MTK 6573 Baseband (Patching / Replacing).
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi,
I'm
Markus, a security researcher from Germany. I recently
did
some work on MTK
6573...
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