Hi guys- I have seen a website or page on how to build your own rom.
how difficult is it on 1 to 10?- 10 being very difficult.
what tools do I need?
many thanks
Well it depends how you create the rom and what type of ROM you are creating.
If you plan to simply take an already made rom.zip, make a few little modifications, and zip it back up...it obviously isn't very hard, and likewise its not very satisfying.
If you want to compile a rom from source, then its a bit harder than the process above. To be more specific let's first talk about android versions that are officially supported by the desire: froyo, and gingerbread. Compiling roms based on those honestly isn't that hard. You just need some basic Linux/terminal knowledge. The device and kernel source is actually meant to work by default so you don't need to make any further adjustments. It as simple as opening terminal, downloading the source, and running a build command. Give it an hour (more or less depending on how food your PC is) and you should have a freshly made ROM that you built from source. Yay...some satisfaction.
The hardest thing in my opinion (I've tried all three of these) is compiling a rom based on an android version that isn't officially supported by the desire. (Ice cream sandwich or jellybean). With roms based on these android versions you will have to scour to internet for a working device, vendor and kernel tree. (Hint, hint: WoH and evervolv/nikez). Even once you get the right device tree it probably won't work. You will have to make further adjustments, and even then I'm sure you will be bombarded with build errors. But eventually once you get it to compile successfully....most satisfying thing ever
So yea thats my answer. Keep in mind that I've tried (and eventually succeeded) with all three of the above, and that I've got quite limited programming knowledge. (2 high school comp sci courses, where I learned some java.)
Sent using xda-developers app
building your own rom
Chromium_ said:
Well it depends how you create the rom and what type of ROM you are creating.
If you plan to simply take an already made rom.zip, make a few little modifications, and zip it back up...it obviously isn't very hard, and likewise its not very satisfying.
If you want to compile a rom from source, then its a bit harder than the process above. To be more specific let's first talk about android versions that are officially supported by the desire: froyo, and gingerbread. Compiling roms based on those honestly isn't that hard. You just need some basic Linux/terminal knowledge. The device and kernel source is actually meant to work by default so you don't need to make any further adjustments. It as simple as opening terminal, downloading the source, and running a build command. Give it an hour (more or less depending on how food your PC is) and you should have a freshly made ROM that you built from source. Yay...some satisfaction.
The hardest thing in my opinion (I've tried all three of these) is compiling a rom based on an android version that isn't officially supported by the desire. (Ice cream sandwich or jellybean). With roms based on these android versions you will have to scour to internet for a working device, vendor and kernel tree. (Hint, hint: WoH and evervolv/nikez). Even once you get the right device tree it probably won't work. You will have to make further adjustments, and even then I'm sure you will be bombarded with build errors. But eventually once you get it to compile successfully....most satisfying thing ever
So yea thats my answer. Keep in mind that I've tried (and eventually succeeded) with all three of the above, and that I've got quite limited programming knowledge. (2 high school comp sci courses, where I learned some java.)
Sent using xda-developers app
Click to expand...
Click to collapse
Thanks for that-
Sound very complicated
I am a webdesigner but have no knowledge of developing.
Wanted to try and build a really good rom to make the desire a really good phone for photography.
I have on my phone your rom and RSK supersense 3.5 rom running - coz I like the camera
and I would like to make a rom to turn it into a photography rom for my phone.
any advice??
creating your own rom
Chromium_ said:
Well it depends how you create the rom and what type of ROM you are creating.
If you plan to simply take an already made rom.zip, make a few little modifications, and zip it back up...it obviously isn't very hard, and likewise its not very satisfying.
If you want to compile a rom from source, then its a bit harder than the process above. To be more specific let's first talk about android versions that are officially supported by the desire: froyo, and gingerbread. Compiling roms based on those honestly isn't that hard. You just need some basic Linux/terminal knowledge. The device and kernel source is actually meant to work by default so you don't need to make any further adjustments. It as simple as opening terminal, downloading the source, and running a build command. Give it an hour (more or less depending on how food your PC is) and you should have a freshly made ROM that you built from source. Yay...some satisfaction.
The hardest thing in my opinion (I've tried all three of these) is compiling a rom based on an android version that isn't officially supported by the desire. (Ice cream sandwich or jellybean). With roms based on these android versions you will have to scour to internet for a working device, vendor and kernel tree. (Hint, hint: WoH and evervolv/nikez). Even once you get the right device tree it probably won't work. You will have to make further adjustments, and even then I'm sure you will be bombarded with build errors. But eventually once you get it to compile successfully....most satisfying thing ever
So yea thats my answer. Keep in mind that I've tried (and eventually succeeded) with all three of the above, and that I've got quite limited programming knowledge. (2 high school comp sci courses, where I learned some java.)
Sent using xda-developers app
Click to expand...
Click to collapse
htc_desire_luke said:
Thanks for that-
Sound very complicated
I am a webdesigner but have no knowledge of developing.
Wanted to try and build a really good rom to make the desire a really good phone for photography.
I have on my phone your rom and RSK supersense 3.5 rom running - coz I like the camera
and I would like to make a rom to turn it into a photography rom for my phone.
any advice??
Click to expand...
Click to collapse
any software needed ??
htc_desire_luke said:
any software needed ??
Click to expand...
Click to collapse
here is a summary of what you need and main steps, from hd2 forum.. next time do a search before post.
Obviously you have to use a desire device tree.
http://forum.xda-developers.com/showthread.php?t=2488670
There is an entire section dedicated to this subject, found in
creating your own rom
paolo-red1 said:
here is a summary of what you need and main steps, from hd2 forum.. next time do a search before post.
Obviously you have to use a desire device tree.
http://forum.xda-developers.com/showthread.php?t=2488670
Click to expand...
Click to collapse
sound very difficult-
my laptop is running linux and i think 64bits- I am running opensuse 12.1 KDE
but thats all i know
will have to do some more reading on this, I dont think I will be able to just pick it up and go.....
You are kiddin' me
Enviado desde mi HTC Desire
creating your own rom
Jack4L_ said:
You are kiddin' me
Enviado desde mi HTC Desire
Click to expand...
Click to collapse
what do you mean Im kiddin you?
Related
Hi All,
Running rooted Hero with Modaco 2.5.1 rom ( thanks Paul )
Was hoping someone could ( simplistically ) answer a few question for me.
As I understand it - one of the things holding back development of Hero ROMS is that HTC haven't released the kernel for the Hero.
1) What exactly IS the kernel in the greater scheme of things?
2) When are HTC likely to release it?
3) When it is released, what new things will it allow developers to do?
4) Anything else relevant to it worth knowing?
TIA
Look at these:
1. The kernel is the Operating System for the phone, it runs everything.
2. That is the magic question...
3. It'll allow more development in terms of mods. we'll be able to change alot more and get more out of the phones.
I'm sure others will have more detailed explanations.
Regarding question 2:
I've gotten response from HTC support the other day that the release is planned but no sure date could be given.
Date: 5th of October
My question:
Hello there, I realize that this might not be the normal kind of request you guys get, but here goes. This is probably not your average request and might require escalation. I was wondering when the source code for the Hero kernel was gonna be available at developer.htc.com?
Click to expand...
Click to collapse
Answer:
Hello
This is quite a normal question we get here at HTC. The source code is something that will becoming soon. We have had contact with those far higher than my self or are planning on adding the source code as soon as possible. I have not been given a time scale but bases on the code for the two other handsets i should expect it in the next couple of weeks.
Hope this helps.
Click to expand...
Click to collapse
So, educated guess would be around the release of the Hero in the US.
Some if I have this right -
The kernel is the basic underlying OS of the phone, and a ROM sits on top of this end gives us the end user experience ( and Sense UI is within the ROM ).
Am I right in thinking the kernel is linux based?
And a big magic question - when the kernel is released, will people be able to modify it and get the bluetooth working properly?
Sorry if it's a bit basic - but interesting to me....
The Kernel is not the OS (As most people understand an OS to be) (OS meaning Operating System)
It's at the core of the OS but is not the OS. You can keep the same build of an OS but update the kernel and vica versa. It is (put simply) what converts the hardware calls from the OS into something the hardware understands.
So (using current issues as explanation) The OS tries to load the GPS and the kernel isn't configured with the right settings the GPS won't load. Similarly if you try and use the trackball and it's not setup in the kernel then it won't do anything.
The OS will still work fine with other things but until the kernel has the right settings put into it it just won't see the parts of the phone it's not set up to.
Here is a technical description of a Kernel.
http://www.linfo.org/kernel.html
I'm sure I've just made it as clear as dishwater but if not I hope it's helped.
J-Zeus said:
Some if I have this right -
The kernel is the basic underlying OS of the phone, and a ROM sits on top of this end gives us the end user experience ( and Sense UI is within the ROM ).
Click to expand...
Click to collapse
Not exactly. To add to what akirainblack has said already...ROM stands for Read Only Memory. In this context it is a bit different as it is the complete package that makes up the Kernel, the OS and anything that is pre-installed to the phone. When you run the RUU (Rom Update Utilitiy) on your PC is completely refreshes the system software in your phone - Kernel, OS and any pre-installed apps - just as if you had bought it from the shop like that.
J-Zeus said:
Am I right in thinking the kernel is linux based?
Click to expand...
Click to collapse
Yes.
Hmmm...
simple question... when the kernel is available... would we be able to get a white taskbar on the Hero?
//Nik
When the kernel source is available, we should be able to rebuild Android completely from the source code repositories and do practically whatever you want.
Regards,
Dave
foxmeister said:
When the kernel source is available, we should be able to rebuild Android completely from the source code repositories and do practically whatever you want.
Regards,
Dave
Click to expand...
Click to collapse
Including getting Bluetooth working?
J-Zeus said:
Including getting Bluetooth working?
Click to expand...
Click to collapse
In theory, yes. In practice, the situation is a little more complicated, but at the very least I'd imagine it would be possible to get BlueX, or something like it, working on rooted Heros fairly quickly.
Regards,
Dave
Given that this is a Linux kernel, aren't HTC required by the GPL to make the source available to all Hero owners?
This is covering the same ground, but is another way to look at things regarding the kernel and the OS. The kernel abstracts the specifics of the hardware from the Android system. For example, when the Android system requests that the bluetooth hardware be enabled, the kernel can translate that request so that it works with the particular hardware of the phone - as the bluetooth hardware of the Magic may be different from the bluetooth hardware of the Hero. So the kernel, is an interface that translates and Android call to the specific hardware level controls necessary. The kernel sits between the hardware and the Android system.
It also means that releasing the kernel will not allow us to make changes to the Hero Android user interfaces. If we want to change colours, icons and so on in the Hero ROM, we would need the source code for their "tweaked" Android and maybe to some degree their TouchFlo software. I doubt they would give that away. It would allows us however, to tweak the kernel, or transplant the driver code for specific hardware pieces in the Hero, to a newer version kernel.
I understand that the release of the hero kernel, could help me with my cause (getting 1.5/1.6 'clean' android on my hero without any htc apps/front ends).
Somebody suggested contacting HTC and asking for it to be released.
I have a few questions regarding that:
1) Has this happened before? That HTC released an android kernel?
2) Did this happen after the request?
3) Who should we contact to get it? (which HTC division)
4) Is there a possibility that they don't want to release it, because it would allow people to copy parts of the proprietary interface?
E2K said:
1) Has this happened before? That HTC released an android kernel?
Click to expand...
Click to collapse
Take a look at http://developer.htc.com/
The Dream and Magic sources are available.
E2K said:
4) Is there a possibility that they don't want to release it, because it would allow people to copy parts of the proprietary interface?
Click to expand...
Click to collapse
The HTC Sense UI won't be included in the kernel source.
They dont have to release the source of them.
New question
Is it possible to create a new donut kernel (2.6.29) with the changes they made to the 1.5 kernel (2.6.27)?
Looks like they send you the hole kernel, not just some patches and new drivers...
mopodo said:
Take a look at http://developer.htc.com/
The Dream and Magic sources are available.
Click to expand...
Click to collapse
So this means that we could compile or 'cook' a working vanilla android 1.5 for the HTC hero, with everything working fully?
HTC HAS to release the kernel source as required under the GPL license that the kernel was released under. It is indeed a linux kernel and it contains the necessary parts to work the hardware along with extra drivers and modules (stupid monolithic kernels).
Here's what I don't get (and hopefully somebody will clarify this for me). Why hasn't anybody tried building android with the current kernel available? Android has the ability to be built around a pre-compiled kernel (it does this if you do a straight make right after repo sync with the pre-compiled dream kernel). You'd only need to re-build the wlan.ko module for the new kernel and the gps module would be compiled against the specified kernel, so it should work.
If I had Hero, I'd test it (if you want to trade your Hero for my G1, hit me up ), but there's no reason it shouldn't work.
Up to now, I've only seen ports, and those are hard to make work because of the pre-compiled files, so that leads to loads of file-swapping and finger-crossing, but an AOSP make should still work. Anybody wanna try it (or post me a hero kernel and I'll compile you a stock donut build to test).
jubeh said:
HTC HAS to release the kernel source as required under the GPL license that the kernel was released under. It is indeed a linux kernel and it contains the necessary parts to work the hardware along with extra drivers and modules (stupid monolithic kernels).
Here's what I don't get (and hopefully somebody will clarify this for me). Why hasn't anybody tried building android with the current kernel available? Android has the ability to be built around a pre-compiled kernel (it does this if you do a straight make right after repo sync with the pre-compiled dream kernel). You'd only need to re-build the wlan.ko module for the new kernel and the gps module would be compiled against the specified kernel, so it should work.
If I had Hero, I'd test it (if you want to trade your Hero for my G1, hit me up ), but there's no reason it shouldn't work.
Up to now, I've only seen ports, and those are hard to make work because of the pre-compiled files, so that leads to loads of file-swapping and finger-crossing, but an AOSP make should still work. Anybody wanna try it (or post me a hero kernel and I'll compile you a stock donut build to test).
Click to expand...
Click to collapse
Hi, thank you for this information. You make it sound like it's possible
I tried searching for the Hero Kernel, but I could only find this:
http://developer.htc.com/
The hero is not listed (maybe it shares a lot with the magic kernel?).
edit: this post dating from september 10 stated that HTC would "release the kernel source soon".
This was more than a month ago though..
edit2: calling HTC Netherlands right now..
edit3: after explainig the need for the kernel, I've been on hold for 10 minutes now..
edit4: more than 18 minutes now
edit5: after 26 minutes I hang up
Well I have a Hero running Modaco 2.2. I could post this kernel (where?) Or it surely could be extracted from one of the ROMs available on this very site
SquiffSquiff said:
Well I have a Hero running Modaco 2.2. I could post this kernel (where?) Or it surely could be extracted from one of the ROMs available on this very site
Click to expand...
Click to collapse
I could be wrong, but I believe there is a difference between the 'kernel', and the 'kernel source'. The second one is needed when you want to compile the kernel.
Speaking as one who has compiled kernels in the past there are three components required here:
The kernel source- this is typically available from http://kernel.org/ If HTC have made any changes to the source of the kernel itself then these should be apparent in their distribution of the kernel source
The relevant configuration file '.config' which should accompany their distribution of the kernel source and permit you to compile any other kernel as a drop in replacement.
Source code and makefiles for any custom kernel modules ('drivers' in windows terminology) In Linux these have to be compiled together with the kernel.
To use a cookery analogy:
The kernel source is the raw ingredients. It can be set up for anything from a supercomputer to a DVD player depending on how you use it. The kernel config is the method which will allow you to bake the type of cake you intend. The modules sources are any of HTC’s own custom ingredients required for everything to work. THe kernel is the finished cake which you eat.
I'm pleased to present my MoDaCo Custom ROM for the Samsung Galaxy S! READ THIS WHOLE POST BEFORE YOU START! No, really, it contains everything you need to know. wink.gif
This ROM is the 'starting point' for my Galaxy S custom ROMs.
About MoDaCo Custom ROMs
MoDaCo Custom ROMs are based on official ROMs - either shipping or leaked. A MCR release is designed to feel as far as possible like a stock ROM, with optimisations, tweaks and complimentary additions that enhance the user experience. The aim of a MCR is to be ultra reliable for use on an everyday device.
Requirements
In order to use this ROM on your device, YOU MUST ALREADY BE RUNNING THE JFB ROM FROM HERE. Do NOT use this ROM with any other base, unpredictable things will happen, the most likely being you'll have to reflash your device via Odin.
Features Included
* Based on the JFB release
* Rooted with Superuser 2.1 by ChainsDD
* Built with the MCR build process which reduces the size and boosts the speed of the ROM
* busybox with Droid Explorer support
* Updated Google Maps
* MCR version displayed in 'About' screen
* Optional Google Voice Search
* Optional Google Voice Dialer
* Optional Fancy Widget
* Optional Beebplayer
* Optional baked in Wavesecure via the online kitchen (installed to system partition for maximum security)
Changelog
Please see 2 posts below this one for the changes in each release.
Installation
To install this ROM:
* Ensure you have the JFB ROM installed (linked above)
* Download the zip file of your choice from the links below (or the online kitchen) and copy to your SD card named 'update.zip'
* Restart your device in recovery mode by running 'adb reboot recovery' (download adb if you do not have it already, use adb-windows, adb-mac or adb-linux as appropriate)
* Select the option to apply an update zip, and select the zip file you copied to your memory card
Upgrading
No wipe is explicitly required in order to use this ROM, however if you do encounter issues of any kind, it is recommended that you wipe your device and reproduce the issue before raising it here.
Downloads
This ROM is currently only available in the online kitchen - prebakes to follow.
Thanks
It's impossible to mention everyone who contributes to the Android community by name, but to everyone out there who does great work and shares it with us all - you have my gratitude and respect.
And finally...
If you would like to show your appreciation for the ROM, please consider supporting MoDaCo by signing up for a MoDaCo Ad Free or MoDaCo Plus account, both of which also give you early access to Beta ROM releases and access to the the online kitchens.
Enjoy!
http://android.modaco.com/content/s...rom-for-samsung-galaxy-s-with-online-kitchen/
Does this ROM fix the ram issue so that all 512MB of ram is utilized?
Congrats on being the first custom rom here.
Congratulations! I don't have a phone yet but I am very pleased to see a custom rom already!
woohoo custom ROMs already. Guess I'll be getting myself the phone after all.
umm.. but in another thread people where saying that it wasn't gonna be possible because samsung encrypt their drivers etc. so this mean they did release they drivers? and there is gonna be alot of custom rooms for galaxy gravity?
Perrosky said:
umm.. but in another thread people where saying that it wasn't gonna be possible because samsung encrypt their drivers etc. so this mean they did release they drivers? and there is gonna be alot of custom rooms for galaxy gravity?
Click to expand...
Click to collapse
No I said it would be near impossible to get roms from other sources like Sense roms or Froyo on because of the driver issue. I never said you would never see custom roms. The only roms you are going to see are one's based off of Samsungs release.
Hold on, hold on. So even though Samsung released the Galaxy S' driver source code to the public, it's going to be "near impossible" to port Sense and FroYo to the phone? I may be ignorant but I'll just ask with ignorance, how do you figure?
Javalu said:
Hold on, hold on. So even though Samsung released the Galaxy S' driver source code to the public, it's going to be "near impossible" to port Sense and FroYo to the phone? I may be ignorant but I'll just ask with ignorance, how do you figure?
Click to expand...
Click to collapse
Download the source code..... ok now open it and go to GalaxyS_Kernel.tar.gz. Now in there just enter the first folder then go to modules. Go to Dpram. Open up any of those files in notepad. You should see written non-compiled code right? That is fine now go back to the module folders and go to S3cbc. Now open up s3cbc_module.o. Does that look like non-compiled code? No it doesn't. It's either already compiled or encrypted. That's what I mean
psychoace said:
No I said it would be near impossible to get roms from other sources like Sense roms or Froyo on because of the driver issue. I never said you would never see custom roms. The only roms you are going to see are one's based off of Samsungs release.
Click to expand...
Click to collapse
Quick question, does that mean any custom rom that is release will be based off the official rom they release which has Touchwiz backed in? If so, does that rule out a plain vanilla android rom for this device? Thanks for your help and appreciate the knowledge.
Papa_I said:
Quick question, does that mean any custom rom that is release will be based off the official rom they release which has Touchwiz backed in? If so, does that rule out a plain vanilla android rom for this device? Thanks for your help and appreciate the knowledge.
Click to expand...
Click to collapse
No it doesn't rule out plain vanilla android rom. Yes they will all be based on Samsung but rom makers can take out all the touchwiz garbage and throw in another launcher like adw or Launcherpro.
That's what I wanted to hear. Thanks for the help. Now if I only could decide if I should keep the Nexus One or purchase this phone..... Decisions, Decisions.
psychoace said:
Download the source code..... ok now open it and go to GalaxyS_Kernel.tar.gz. Now in there just enter the first folder then go to modules. Go to Dpram. Open up any of those files in notepad. You should see written non-compiled code right? That is fine now go back to the module folders and go to S3cbc. Now open up s3cbc_module.o. Does that look like non-compiled code? No it doesn't. It's either already compiled or encrypted. That's what I mean
Click to expand...
Click to collapse
How lame. Have other handsets had similar problems?
what are talking about .o files and unix compiled modules same on all versions of unix. o stands for object module.
Javalu said:
How lame. Have other handsets had similar problems?
Click to expand...
Click to collapse
Yes the Behold 2, the original Galaxy, and the Moment all made by Samsung have only had Samsung roms on them.
lgkahn said:
what are talking about .o files and unix compiled modules same on all versions of unix. o stands for object module.
Click to expand...
Click to collapse
So they can easily be decompiled? If it's source code why is it already compiled?
dont go too deep into specific things that we may not even need (we are not coders here) but the source code for basic hardware that we need to get things going are already there.. things like camera, wlan, etc. btw, do u know what s3cbc is for?
raspdeep said:
dont go too deep into specific things that we may not even need (we are not coders here) but the source code for basic hardware that we need to get things going are already there.. things like camera, wlan, etc. btw, do u know what s3cbc is for?
Click to expand...
Click to collapse
What about s3clcd? Here is a little copy and paste of some of the garble that was in the compiled file
screen width=%d height=%d va=0x%x pa=0x%x
I would go out on a limb and say those are video drivers. The one's that have been encrypted on all other samsung phones.
Also in s3cbc there is some code at the bottom
PVRSRV_PIXEL_FORMAT_YUY2 PVRSRV_ERROR_FIFO_SPACE char ui32ByteStride psDevInfo PVRSRV_PIXEL_FORMAT_PAL1 PVRSRV_PIXEL_FORMAT_PAL2 pfnOpenBCDevic
If you don't know the Galaxy's gpu is PowerVR SGX540 and YUY2 is a colol format for video screens
http://www.fourcc.org/yuv.php#YUY2 and Pal is of course a European video standard.
they are not encrypted, they are object codes in machine language for arm.. and why we need that again for custom roms?
Wanted to test modaco ROM but they are not free.. Any kind souls upload and share ?
well feedback on the R1 rom its clean and smooth, worked even better when i did the stall tweak posted here
http://android.modaco.com/content/s...298/got-the-stalling-problem-rooted-try-this/
the phone seriously got 2 times faster, opening apps playing game very quick .. happy as here
Ferdimage said:
well feedback on the R1 rom its clean and smooth, worked even better when i did the stall tweak posted here
http://android.modaco.com/content/s...298/got-the-stalling-problem-rooted-try-this/
the phone seriously got 2 times faster, opening apps playing game very quick .. happy as here
Click to expand...
Click to collapse
How much free ram have you got? Considering flashing and rooting, but not sure if it's worth it right now. Meh 10£ isn't that much think I'm gonna give it a try.
EDIT: Just flashed, but now I don't have root access(says access denied when I try to access the /data/data folder). Thought this included the rooted PDA file or do I have to flash that again with odin?
EDIT2: Scratch that I forgot to press the allow-button on my phone after sending the Super-user request..
[This is not the place to say "this is awesome" or "thanks!"]
[DEVS ONLY]
I want to start this thread to keep up the progress on the port.
the bad news is that the SDK is incomplete for now, so (like other devices)
we will have to write our own code for the OS, the nook community
has done a wonderful job writing their own libraries and stuffs, so we will have to do the same.
Instead of pursuing different goals, let's focus on one thing at a time.
since GSM and CDMA versions are already out, it seems we suffer the same bugs, so for now let's unite strength and knowledge to overcome these.
I propose that the first goal to fix is the SurfaceFlinger, so we could at least see the apps, the buttons and the notifications.
it is currently throwing this:
04-06 22:01:35.495: ERROR/Surface(2960): dequeueBuffer failed (Out of memory)
this could lead us that it might coudln't start because of some malloc malfunction or something.
also that pvrsrvinit bugs me a lot.
update:
8/APR/2011
since DiP7 could fix SurfaceFlinger and other things using a different build from the GSM kernel, we have to dig deeper
======================================
CURRENT GOAL
Rebuild Kernel
======================================
Current approaches:
*none
Post any finding, guessing or anything, and please, please don't be afraid to ask anything you have a doubt, as a Dev you should not know everything, so we can help us each other
------------------------------------------
Google Easter egg:
while searching some info about the android.mk file , I put it on the chrome bar to search for that term, but instead I went to
http://android.mk
an easter egg web page from google lol
******TOOLS*********
How to send text and Keystrokes via ADB
http://bradchow.blogspot.com/2011/02/send-intent-and-key-event-by-adb.html
use DroidExplorer to easily access your device from your computer and makes changes from it
http://de.codeplex.com/
The Android Boot Process
http://www.androidenea.com/2009/06/android-boot-process-from-power-on.html
---Kernel Tools----
CPU Datasheet
http://forum.xda-developers.com/showthread.php?t=745877
Samsung GIT
http://android.git.kernel.org/?p=kernel/samsung.git;a=summary
PowerVR SDK
http://www.imgtec.com/powervr/insider/powervr-sdk.asp
Source code of samsung firmwares(keep and eye on this)
http://opensource.samsung.com/
Asus pad honeycomb Kernel Source
http://forum.xda-developers.com/showthread.php?t=1026528
ellokomen said:
======================================
CURRENT GOAL
Find why SurfaceFlinger is not working
======================================
Click to expand...
Click to collapse
Mmmk.. Let me tell you a story.
A long time ago in a galaxy far away... No, that will take too long. In a nutshell, one third of the answer is here, another third is here and the rest is here. I'm not trying to be intentionally vague, I just haven't figured out how these three fit together yet.
Of course, there could also be some bit of code that I missed... some telling line in a debug log that I overlooked or some driver or library that I could have decompiled to sift through its juicy secrets. There could easily be a fix that would take seconds to add and make the whole thing fall in line...
Or we might have to work it from the ground up.
Either way it will happen. It's just a matter of whether it will happen next week, or next month.
(Watch it be a misplaced semi-colon, or a bad symlink... that's how these things go.)
updated approaches and new tools have been added
spacemoose1 said:
Mmmk.. Let me tell you a story.
A long time ago in a galaxy far away... No, that will take too long. In a nutshell, one third of the answer is here, another third is here and the rest is here. I'm not trying to be intentionally vague, I just haven't figured out how these three fit together yet.
Of course, there could also be some bit of code that I missed... some telling line in a debug log that I overlooked or some driver or library that I could have decompiled to sift through its juicy secrets. There could easily be a fix that would take seconds to add and make the whole thing fall in line...
Or we might have to work it from the ground up.
Either way it will happen. It's just a matter of whether it will happen next week, or next month.
(Watch it be a misplaced semi-colon, or a bad symlink... that's how these things go.)
Click to expand...
Click to collapse
The kernel source that you have linked to is 2.6.35.7 for the Nexus S gingerbread and is not fully maintained by samsung but rather by google.
However I do not think you are wrong that there is a problem somewhere in the kernel. The kernel that has been released for the galaxy tab is a mess of horrid code, I have had to re-write parts of kernel drivers just to get them to work under linux, I would not be surprised if similar patches are needed for honeycomb
lilstevie said:
The kernel source that you have linked to is 2.6.35.7 for the Nexus S gingerbread and is not fully maintained by samsung but rather by google.
However I do not think you are wrong that there is a problem somewhere in the kernel. The kernel that has been released for the galaxy tab is a mess of horrid code, I have had to re-write parts of kernel drivers just to get them to work under linux, I would not be surprised if similar patches are needed for honeycomb
Click to expand...
Click to collapse
you mean that you made a port of a Linux Distro into the tab?
ellokomen said:
you mean that you made a port of a Linux Distro into the tab?
Click to expand...
Click to collapse
yes click here for the thread on the port of ubuntu
Current kernel source
Do you guys have another link to the current spacemoose kernel source? The download link seems to be corrupted and won't untar. I want to get in on the fun
noobporter said:
Do you guys have another link to the current spacemoose kernel source? The download link seems to be corrupted and won't untar. I want to get in on the fun
Click to expand...
Click to collapse
here it is, bear in mind that this is for CDMA devices
Unfortunatey, we have 4 other honeycomb threads.
Not trying to be rude but spacemoose updates us in the cdma forums AND we have russian rom updates in the gsm forums.
I really dislike the idea of this thread, there is enough clutter amongst the other threads. Do we really need one more place to browse..
The first posts in the roms thread are kept updated by devs.. Is this not enough??
daml said:
Unfortunatey, we have 4 other honeycomb threads.
Not trying to be rude but spacemoose updates us in the cdma forums AND we have russian rom updates in the gsm forums.
I really dislike the idea of this thread, there is enough clutter amongst the other threads. Do we really need one more place to browse..
The first posts in the roms thread are kept updated by devs.. Is this not enough??
Click to expand...
Click to collapse
yeah but we need a place for the other devs to share their milestones, here is a place for technical discussion amongst us, to share the knowledge etc...
the other threads are flooded from non devs messages, so it´s kind of difficult to read 14 pages of information when the 80% is people complaining not making it boot
lilstevie said:
The kernel source that you have linked to is 2.6.35.7 for the Nexus S gingerbread and is not fully maintained by samsung but rather by google.
Click to expand...
Click to collapse
Yes, and it contains some support for our device (s5pc110), and some more that can be added (pvr) and the architecture necessary to fully support HC without patching the build itself. If we work only towards patching the system build to communicate with the hardware, we won't be able to run AOSP hc versions when the source drops without going through the same painstaking process of hacking the system to function (while creating numerous faults causing FCs in the process). If we build a new kernel, we can get the hardware to communicate in the way future android versions want it to and we can then do what we want with ease.
noobporter said:
Do you guys have another link to the current spacemoose kernel source? The download link seems to be corrupted and won't untar. I want to get in on the fun
Click to expand...
Click to collapse
D'oh! Nobody told me, LOL... I'll get another copy up.
spacemoose1 said:
D'oh! Nobody told me, LOL... I'll get another copy up.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1026528
hey spacemoose! the first portion of honeycomb source... The kernel source of the Asus EEE Pad Transformer... maybe it helps you with a few kernel issues, even if it's for another device... It's honeycomb!
Flokey said:
http://forum.xda-developers.com/showthread.php?t=1026528
hey spacemoose! the first portion of honeycomb source... The kernel source of the Asus EEE Pad Transformer... maybe it helps you with a few kernel issues, even if it's for another device... It's honeycomb!
Click to expand...
Click to collapse
Digging through it now.
spacemoose1 said:
Yes, and it contains some support for our device (s5pc110), and some more that can be added (pvr) and the architecture necessary to fully support HC without patching the build itself. If we work only towards patching the system build to communicate with the hardware, we won't be able to run AOSP hc versions when the source drops without going through the same painstaking process of hacking the system to function (while creating numerous faults causing FCs in the process). If we build a new kernel, we can get the hardware to communicate in the way future android versions want it to and we can then do what we want with ease.
Click to expand...
Click to collapse
Not enough really, PVR kernel module sources have been released from samsung for our device, and is available in update1 zip.
The kernel panics and we have no framebuffer from the nexus s, believe me that is the kernel I want to be running for my project, it is cleaner nicer and things are implemented overall better. unless you know of a solution for kernel debuging over usb
lilstevie said:
Not enough really, PVR kernel module sources have been released from samsung for our device, and is available in update1 zip.
The kernel panics and we have no framebuffer from the nexus s, believe me that is the kernel I want to be running for my project, it is cleaner nicer and things are implemented overall better. unless you know of a solution for kernel debuging over usb
Click to expand...
Click to collapse
Kernel debugging over USB = adb shell cat /proc/kmsg
You can make any kernel work for any device as long as you add the **** it needs. Just takes time. Working on it now.
Goal and tools updated*
spacemoose1 said:
Kernel debugging over USB = adb shell cat /proc/kmsg
You can make any kernel work for any device as long as you add the **** it needs. Just takes time. Working on it now.
Click to expand...
Click to collapse
You don't know what a kernel panic is do you?
lilstevie said:
You don't know what a kernel panic is do you?
Click to expand...
Click to collapse
I thought that linux throws a dump log when it makes a kernel panic specifying the memory address and the cause of crash
Hey all.
I recently compiled android 4.0.3 AOSP for galaxy nexus as was explained in the topic at general discussion.
after a few days of issues, all went fine and i got myself a zip ota package file.
Now, as a developer, i wish to change the rom and the kernel, and debug/emulate it.
trying to type "emulator" didn't help and it suggested i would type "vemulator"
I got and installed vemulator but it asked me for a bootable image. (which one?)
Is there any way i could do this properly?
about the kernel development, i read some info and i separately got the kernel through a git repo. its alright but then again - how can i emulate it?
I do not wishing to risk my device is such early stage.
thanks.
You could try the android sdk.
Sent from my Galaxy Nexus using xda premium
further details please?
Until now i only used android sdk on windows.. so i have no knowledge of this under ubuntu.
I dont understand what you mean by emulating the kernel. I dont think that is possible as the kernel is so tightly tied to the hardware that it has to be loaded to the phone for testing. At least thats how i tested kernels. I make code changes, compile, and flash to device. When the code didnt work i had to flash old kernel or restore nand backup, then try again with code fixes. Repeat hundreds of times. Thats how i did it.
RogerPodacter said:
I dont understand what you mean by emulating the kernel. I dont think that is possible as the kernel is so tightly tied to the hardware that it has to be loaded to the phone for testing. At least thats how i tested kernels. I make code changes, compile, and flash to device. When the code didnt work i had to flash old kernel or restore nand backup, then try again with code fixes. Repeat hundreds of times. Thats how i did it.
Click to expand...
Click to collapse
Understood, Thanks
Now, about emulating the rom.. i understand it IS possible. which steps do i have to take in order to do that after i compiled the source?
Dutchy18 said:
Understood, Thanks
Now, about emulating the rom.. i understand it IS possible. which steps do i have to take in order to do that after i compiled the source?
Click to expand...
Click to collapse
The sources are buildable for multiple devices. Once build for one device it only runs on that device. Building for Galaxy Nexus (maguro) means no emulation but only running on real hardware.
If you want to build an image for the emulator you need to build the emulator configuration (e.g. full-eng). That will only run on the emulator not on a google nexus.
See http://source.android.com/source/building.html for possible configurations and how to run the emulator.
I have been learning how to work in the android environment for a little while now, and want to move onto learning how to create roms from AOSP rather than other peoples existing work. This would allow a lot more freedom. The current dream is to create a JB 4.1.2 rom from AOSP, then release it as a base rom to allow anyone else to rip it up just as they want. Once developed it could be used to show examples of how to use apktool and others to customise your own rom.
Potentially the process could be documented here so that other people could build there own. I don't know how many people still use this phone, but it would be a good learning process.
So is anyone else interested? Currently I know next to nothing so we would be starting from there
I
mcgi5sr2 said:
I have been learning how to work in the android environment for a little while now, and want to move onto learning how to create roms from AOSP rather than other peoples existing work. This would allow a lot more freedom. The current dream is to create a JB 4.1.2 rom from AOSP, then release it as a base rom to allow anyone else to rip it up just as they want. Once developed it could be used to show examples of how to use apktool and others to customise your own rom.
Potentially the process could be documented here so that other people could build there own. I don't know how many people still use this phone, but it would be a good learning process.
So is anyone else interested? Currently I know next to nothing so we would be starting from there
Click to expand...
Click to collapse
I'm up.. :thumbup:
MScorporation95 said:
I
I'm up.. :thumbup:
Click to expand...
Click to collapse
Awesome, as a progress report I have so far managed to download and install the sdk, with JB4.1.2 APIs. Next I'm going to read, this is going to be a nice slow burner.
mcgi5sr2 said:
Awesome, as a progress report I have so far managed to download and install the sdk, with JB4.1.2 APIs. Next I'm going to read, this is going to be a nice slow burner.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2091353
MameTozhio said:
http://forum.xda-developers.com/showthread.php?t=2091353
Click to expand...
Click to collapse
Super! Thank you
@mcgi5sr2
Thanks! Good idea!!! :victory:
I believe you already know about that, but just in case:
- Guide Ride-From a Newbie to a Dev: http://forum.xda-developers.com/showthread.php?t=2281656
- Complete Android ROM development and essential tutorials: http://forum.xda-developers.com/showthread.php?t=1661770
- Rickys Rom Kitchen 2.0/Android Everything Tool 10.0: http://forum.xda-developers.com/showthread.php?t=2200660
bratusm said:
@mcgi5sr2
Thanks! Good idea!!! :victory:
I believe you already know about that, but just in case:
- Guide Ride-From a Newbie to a Dev: http://forum.xda-developers.com/showthread.php?t=2281656
- Complete Android ROM development and essential tutorials: http://forum.xda-developers.com/showthread.php?t=1661770
- Rickys Rom Kitchen 2.0/Android Everything Tool 10.0: http://forum.xda-developers.com/showthread.php?t=2200660
Click to expand...
Click to collapse
Thanks Bratusm,
I am still dreaming of a Vanilla for as many Androids versions as I can muster, however I have been informed it is a complete nightmare for our device, so the first step I am taking will be learning to build CM10, if I can get anything like the stability Lloir and Maxwen got, I'll use that learning to go forward, either with a Slim build or another. I doubt I will release much work as it will fall short of what others have achieved, but I will be available to help others as I learn along the way. I am already thinking of adding a what is tutorial for the SlimRom I've messed with, along with a guide to apks compiling and decompiling. The idea is to make an easy route for anyone who wants to learn what I have so far, and then they can take it and smash up other peoples roms to there hearts contents just like me
mcgi5sr2 said:
Thanks Bratusm,
I am still dreaming of a Vanilla for as many Androids versions as I can muster, however I have been informed it is a complete nightmare for our device, so the first step I am taking will be learning to build CM10, if I can get anything like the stability Lloir and Maxwen got, I'll use that learning to go forward, either with a Slim build or another. I doubt I will release much work as it will fall short of what others have achieved, but I will be available to help others as I learn along the way. I am already thinking of adding a what is tutorial for the SlimRom I've messed with, along with a guide to apks compiling and decompiling. The idea is to make an easy route for anyone who wants to learn what I have so far, and then they can take it and smash up other peoples roms to there hearts contents just like me
Click to expand...
Click to collapse
:highfive::highfive::highfive:
bratusm said:
:highfive::highfive::highfive:
Click to expand...
Click to collapse
One step closer, just built my first CM10 from source, using Maxwens and Lloirs work. There is always hope that I will be able to pull off more. tbh I'll be sitting down with some pen and paper and drawing out a map of what the blazes everything is next!