Hi,
I'm not sure if this is is an appropriate request for this forum.
I'm working on a hardware modification for my old Droid Mini, and I found after a couple months of HW tinkering that my solution requires kernel support which does not exist on the kernel running on the device.
The matter in question is upgrading / backporting the SCSI autosuspend infrastructure to an MSM9860DT kernel.
I've consulted with a developer who thinks the modification may take a few days of work (they don't have the time at the moment) , so I don't think it is a highly complex, from-scratch project for someone who knows kernel development (then again, I may be very wrong - this is not my field whatsoever)
Is there anyone here who may have some time / interest in poking at this, or knows someone who might?
Cheers,
Rafael
Related
Found post about VegaComb being released for Adam on TabletRoms.com. Due to the similarities and the fact that there exists ROMs for G-Tab based on Adam. Do we know if there is an effort to port this ROM to G-Tab? Any info would be appreciated as this looks to be THE ROM, with the possibility of fixing camera and hardware acceleration.
A kernel is being worked on ; on the slatedroid forum. The hardware is different so a kernel has to be made for it to work
[email protected]: Posted Today, 09:31 AM
Unfortunately the Vega is not a hardware match for our beloved g-tab, they are very similar however they are not the same hardware exactly, little things like the wireless controller and the camera are different. They also have a different mainboard in their system. I'm pretty sure that the rom that works on theirs is not going to work on ours until we have a working kernel to work from. They have worked very hard on rewriting the drivers to get their tablet to work as well as it is in 3.2 and they don't seem to be slowing down now that it is working. I know that the group that is working on the kernel is working very hard to get it running as quickly as we can, I don't think that most of us have much experience in kernel coding and so it is taking some time to even get it to boot. However I can tell you that we are working diligently to get through the problems and get a kernel out to the community so that we can join the ranks of the Vega in making Google cry by hacking our way to victory. On a side note I want to say how impressed I am by the level of assistance that everyone in this community has for the new members and old members alike. I don't know of another rom that has this level of support from it's users out there. Thanks to all of you that are helping people overcome their issues and enjoy this fantastic rom.
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[email protected] Posted 14 August 2011 - 09:01 PM
Hello all, Ch3vr0n5 here
The GTab Kernel Dev Team would like to chronicle our kernel development process for everyone to enjoy. The Gtablet 2.6.36 kernel project is based on the work done by Eduardo/RaYmAn on the Adam kernel. The biggest thanks goes out to them and anyone else who works on that project because it has made our work possible.
The Dev team is currently: Myself, Icewyng, Mayday_Jay, WayneMasta, Treznorx
[8/25/2011]
We know that we are hanging on init.rc and have a few ideas one how to proceed. Mayday_Jay (Give him and Icewyng a big thank you because they have made this project viable) is working on getting all the developers a proper update.zip that will help those with out a usb to serial converter get some useful debug information.
Don't fret when it takes a couple days for us to update. If you want bleeding edge news, join us on the kernel dev irc channel which is found further on in the thread. We are still working! =)
[8/23/2011]
Linux (BT5) will boot without Touchscreen working. Work is progressing slowly to get this working with Android. Mayday_Jay, with the use of USB -> serial converter has been able to get some useful dmesg output as well as some other debug information that is giving us new ideas on how to proceed.
[8/19/2011]
Starting to modify the adam files to mach the correct values for our device. Our current config gets us passed the birds and to the second boot image and the usb device registers. Trying to get it connected to adb to get some dmesg output.
[8/14/2011]
The resulting kernel did not boot and this is more than likely due to the fact that there are quite a few new config options that need to be set. I have run a diff to find differences between Pershoot's and Rayman's kernel and will be trying a new config either tonight or tomorrow hopefully. Gotta sift through new and deprecated options as well as any they both have but are set differently (and why)
Part 2
The kernel compiled with the additions from rayman's config in pershoots got it past the birds to the "Android 3.0" screen. Tomorrow I will be able to hookup adb and see where it is crashing from there.
[8/15/2011]
Still running through different configurations. Need to ask pershoot what modifications he made to make the .32 kernel boot on the 1.2 bootloader. IE Which files use the NEWBL config option and what the changes are.
[8/16/2011]
I received the source for the Vega kernel from rebel1. I may not update for a few days as I try out different configs and such but I will still be here.
[8/17/2011]
Decided to go with the Adam kernel because of hardware compatibility. Put up the github repo.
GitHub.com Repo
git://github.com/ch3vr0n5/android-tegra-2.6.36-gtablet.git
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All thoughts, idea, comments and criticisms are welcome (Please be kind). Just remember, most of us are not programmers or software engineers by trade. I got my degree in network security so I generally play with routers, firewalls and the like and do this as a hobby. If you find anything wrong with what I or any of the Dev team have written please tell me... just don't point and laugh. LOL
Cheers
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Hi! Has anyone managed to make hardware accelerated encryption working on A101 gen 8?
I don't think so.
BTW if you are interested in archos dev you can if you like also join #openpma on irc.freenode.net or web irc http://www.openaos.org/chat and ask your questions there. Just a note most of them are on european time and sometimes it can take a while before you get an answer.
divx118
If someone is interested in the problem, I should note as a proof of concept, that it's possible to build a working (at least, to some extend) driver for HW accelerated encryption for A101 gen8 (linux with GPL'ed 2.6.29-omap1 kernel).
Some manual work is required to patch and fix sources, but it's relatively easy for an experienced user (sorry, I don't put whole howto here, because am not sure if someone needs it).
Info can be found here:
http://processors.wiki.ti.com/index.php/Cryptography_Users_Guide
https://gstreamer.ti.com/gf/project/arm_crypto/
"Working" here means the driver can run console tests with acceptable results (tested on Debian 6 with 2.6.29-omap1 kernel): http://pastebin.com/Zf63HYcC
I'm very new to Android as an OS with the Linux kernel at its heart, but fairily proficient with GNU/Linux and a plethora of its distributions for what has been more than a decade by now. So, what I (amongst other things) find a bit bewildering is that very many of custom firmware images seem to require a very specific kernel version or build for handsets to actually work. For my Xperia Mini (Smultron), there are ROM images based on CyanogenMod that won't work with the "vanilla" CM7 kernel, for instance.
With a proper GNU/Linux system, you don't have that kind close coupling of userspace and kernel versions at all. Barring some minor incompatibilities between certain (old) releases of udev and modern releases of the Linux kernel (and vice versa), there's very little (if anything) that stops you from supplanting your three years old distro's kernel with something that Linus released a few days ago.
However, whenever I've come across a guide how to install/set up this and that ROM for some kind of phone, and someone (more or less prominently) states that that image will require a specific kernel build, I've _never_ been so lucky to have been offered a technicial explanation as to why exactly this is the case. Can anyone reading this thread tell me, or point me to where I can find out more about the underlying reasons for these subtle incompatibilities?
I refuse to believe noone can answer that question...
Some features are not available in stock kernel, that are needed for custom ROM.
I am personally not fully familiar with kernels.
I know it's not as simple as it looks, otherwise everybody could do it, but at least can someone point me in a vague direction?
Just out of interest, how do you upgrade a device tree to support newer Android versions? Anything in particular which might prevent Android from functioning correctly?
I've acknowledged SELinux as a problem already.
I'm new to running device trees and kernels but I do know my way around Linux (I know how toolchains works, and I can build Android and kernels, for example) and I know C++, C and Java.
I've 'Google-d' the matter, but to no avail – there appears no clear way to do it.
+1 this question
i want its answer too:good:
I’ll start by admiting that, in the arts of cooking/building/porting android innards, I’m closer to being a complete noob than na intermediate user.
I own a Newman K1S, JB 4.2.2, MT6592, 2Gb/16Gb, 720p, and, sadly for me, it looks like the manufacturer (Newman Mobile, or Newsmy, who knows) pretty much disavows any knowledge of this model ever being built or sold. No reference to it, no community, no android updates or ROM releases.
Taking into account some MediaTek source codes for KitKat were made available earlier this year (even if unofficially), I was wondering:
So, question number 1 – Is it possible to build android 4.4 for my device straight from said sources? Or are they unreliable and it would be best not to attempt it?
And question number 2 – Being at the noob level, should I stay away from such a task? And, in this case, would I be better off porting a 4.4 ROM from a similar spec’ed device?
Also, while browsing needrom, I noticed that a 4.4 “official” ROM was posted for my device. However, having flashed it, I found that it produces no sounds from the external speaker (although with headphones it works fine). Same thing was experienced by other users, and there is no fix so far.
Which takes me to question number 3 – What may I try, in order to fix an issue like this? Does KK use the same sound drivers as JB, and maybe it’s only a matter of replacing them? (if so, I believe this is within my grasp, even if I must unpack the IMG files to reach the drivers)
Lastly, Newman K1S has a severe overheating problem when pushed, which I believe would be easily solved by underclocking it to 1.3 or 1.5, or maybe implementing an optimized kernel.
Final question – How do I manage to underclock with my current kernel, or, better yet, how do I port a custom, optimized kernel to my device?
Congratulations to everyone who managed to read this far, and thank you in advance for any help provided. I’ve spent the last few days reading tutorials and guides, only to become even more confused… I did manage to get android kitchen running on my Windows laptop, though!
Links to recent/updated guides that might be useful are appreciated, too.