Hello- I posted this awhile ago but it got lost when the forums crashed:
Could someone out there point me to a stock kernel that has root built in and has rom manager support? Right now I have koush's rom CKM compatible kernel and I am using the one click root method- from what I understand it is preferable to have the root built into the kernel- thanks in advance
I would be interested in this as well.
untill samsung releases there d107 source code your out of luck. every kernbal right now is based of the dg27 kernal
Im running stock rom with the mixup kernel. Runs better than stock and everything works the same as if it were stock also. I suggest trying that.
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Hi,
I am trying to extract the kernel from mmcblk0p20 using unpack-bootimg.pl
from this post: http://forum.xda-developers.com/showpost.php?p=2885020&postcount=1
I can get a valid ramdisk out of it but the kernel is not a gz file as it should be.
Any hint?
Etn40ff said:
Hi,
I am trying to extract the kernel from mmcblk0p20 using unpack-bootimg.pl
from this post: http://forum.xda-developers.com/showpost.php?p=2885020&postcount=1
I can get a valid ramdisk out of it but the kernel is not a gz file as it should be.
Any hint?
Click to expand...
Click to collapse
The kernel is not exactly a "gzipped" file because the first part of it has bootloader code that provides a mechanism to uncompress the remaining part of the kernel (which uses a form of gzip provided by a micro zlib).
More importantly, what are you trying to accomplish? The "kernel" image that comes from split_bootimg.pl (or such) is the actual file you use to re-pack, etc. Unless of course you're trying to decompile the kernel for reverse engineering purposes, but that would be pointless and you wouldn't be asking this question if that were the case.
If you're trying to get the kernel config, use extract-ikconfig from the 'scripts' directory in the Linux source tree. You have to invoke it by cd'ing into the Linux source directory and doing:
Code:
./scripts/extract-ikconfig /path/to/your/kernel-file &> /where/you/want/the/resulting-config
(you can't cd into 'scripts' and have it work).
Enjoy.
As you say unpacking the kernel to get the configuration is pointless: I could get it on htcdev without any effort.
I just had a boring night and I tried to kill it repacking my own flavour of android.
I was not able to make it boot so I started guessing which problem I was having; the kernel seemed a reasonable candidate (I was convinced that I was stripping the header away from it when unpacking)
how could you acquire that kernel? last time I checked there was no source?
You need the kernel source before a kernel can be made. Thats the sucky part.
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Undeadk9 said:
You need the kernel source before a kernel can be made. Thats the sucky part.
Click to expand...
Click to collapse
Eh? No. A kernel exists, just in binary form. HTC has yet to release the source code, but unless you plan to modify parts of it, there's not much point.
nbetcher said:
Eh? No. A kernel exists, just in binary form. HTC has yet to release the source code, but unless you plan to modify parts of it, there's not much point.
Click to expand...
Click to collapse
A kernel source is no problem, I got it from android github.
The issue is the mods htc made and added, and the tools around it they used to compile.
I would like to compile my own, to optimize (did it on linux too).
If anyone can explain me simple how to use the binary kernel, I am happy too for now, if that makes me able to compile CM7
Anyone? Can't be too hard since a lot of folks pulled it of?
I have a lot of technical experience, just need some android specific info
I know nothing bout kernels. They scare me. I'll stick to ROM making.
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OpenMinded said:
A kernel source is no problem, I got it from android github.
The issue is the mods htc made and added, and the tools around it they used to compile.
I would like to compile my own, to optimize (did it on linux too).
If anyone can explain me simple how to use the binary kernel, I am happy too for now, if that makes me able to compile CM7
Click to expand...
Click to collapse
It's not quite that simple. They don't just 'mod' the kernel, they add device support to it. The upstream Linux kernel does not support the latest and greatest Qualcomm-based devices, so HTC uses their own repository based on Codeaurora (http://www.codeaurora.org) which is downstream from Qualcomm. Confused yet?
Point being: Linux will not run properly on our device until we have either the HTC Sensation source, Doubleshot source, or someone sifts through and pieces together all of the various sources needed from Codeaurora.
To use the binary form, just use boot.img from our device's HBOOT image.
nbetcher said:
It's not quite that simple. They don't just 'mod' the kernel, they add device support to it. The upstream Linux kernel does not support the latest and greatest Qualcomm-based devices, so HTC uses their own repository based on Codeaurora (http://www.codeaurora.org) which is downstream from Qualcomm. Confused yet?
Point being: Linux will not run properly on our device until we have either the HTC Sensation source, Doubleshot source, or someone sifts through and pieces together all of the various sources needed from Codeaurora.
To use the binary form, just use boot.img from our device's HBOOT image.
Click to expand...
Click to collapse
Thank you for the explanation.
I have been compiling kernels on linux, I know we need drivers and that HTC patches the kernel. I did not know about codeaurora, thanks .
The HTC Sensation kernel source is on the HTC website:
http://developer.htc.com
I was wondering undead, how do you compile other ROMS? You just strip what is not needed? I thought you know how tot strip just the kernel, since you made a senseless rom.
I will try using the boot.img, thanks.
Does that mean porting a Sense rom would only require swapping the boot.img from another Sense 2.0/3.0 rom?
Thanks for the info
LOL. No its still the sense base and uses the stock boot.img from the stock ROM. It's still HTC at its core. Like I said I know 0 'zero' about kernels.
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Undeadk9 said:
LOL. No its still the sense base and uses the stock boot.img from the stock ROM. It's still HTC at its core. Like I said I know 0 'zero' about kernels.
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Click to expand...
Click to collapse
point taken . I think I just made a working zip containing only the stock kernel.
If I have time, I will try to put that kernel in a AOSP rom for the Sensation and see what that does. may take some time...
does any1 know how to mod the device checking of a rom?
i get an error 7, found it is because of the device check.
I modded the update script and binary from the Senation Alpha cm7 and got that error, which seems to point to a different model of phone.
I would like to work around it and see if the kernel works with cm7
Can someone help to build tun.ko for stock doubleshot kernel?
Waiting for src code long time and seems no module available now..........
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at last Imanaged to compile by myself. here I put it in case anyone needs.
I've built it like I've always built my 2.3 kernel and I cant even get a stock kernel I compile to boot
you guys think it might be my CC? I've been using Sourcery G++ Lite 2011.03-42 for ARM EABI for a year almost and hasnt had any problems
I'm using supercurios kernel source also btw
any ideas?
ECOTOX said:
I've built it like I've always built my 2.3 kernel and I cant even get a stock kernel I compile to boot
you guys think it might be my CC? I've been using Sourcery G++ Lite 2011.03-42 for ARM EABI for a year almost and hasnt had any problems
I'm using supercurios kernel source also btw
any ideas?
Click to expand...
Click to collapse
"adb shell cat /proc/kmsg" output while it's trying to boot may be helpful.
I don't even get to that point, stops at Google logo and gives me nothing
PS I'm building for ICS (forgot to mention that)
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I'm not really sure. I have built from supercurio's source so I know it's not that.
Are you using this source (https://github.com/project-voodoo/linux_samsung)
Are you on the correct branch?
Have you made any changes?
Are you fastbooting the boot.img or using the anykernel script?
Hostile89 said:
I'm not really sure. I have built from supercurio's source so I know it's not that.
Are you using this source (https://github.com/project-voodoo/linux_samsung)
Are you on the correct branch?
Have you made any changes?
Are you fastbooting the boot.img or using the anykernel script?
Click to expand...
Click to collapse
No changes
Same source
Correct branch
Any kernel script
Only thing I haven't changed is CC =\
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ECOTOX said:
No changes
Same source
Correct branch
Any kernel script
Only thing I haven't changed is CC =\
Sent from my Nexus S 4G using Tapatalk
Click to expand...
Click to collapse
I have only ever used the one google supplies so I would say try that. It's the only thing I can think of
Hostile89 said:
I have only ever used the one google supplies so I would say try that. It's the only thing I can think of
Click to expand...
Click to collapse
Me too...I'll give a diff CC a try
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Solution
it was the CC, i used the default one and it worked.
apparently according to Ezekeel you need to add -mno-unalligned-access to the kbuild flags for the newer TC from CS
so if your using code sourcery add that to the build flags or just use the default toolchain
I can't seem to get my stock AOSP build working with a standard kernel compiled from the Samsung source (I haven't made any modifications). My AOSP ROM boots and works properly if I use the kernel extracted from the stock device boot.img, but if I try to use the kernel that I compiled, the device doesn't even boot properly and just goes into an infinite boot loop.
I've tried compiling with the Code Sourcery toolchain recommeded in the Samsung Kernel README, as well as with the arm-eabi-4.4.3 tootchain, but both yield the same result. Is there something I'm missing? Has anybody else gotten the stock Samsung kernel working with their ROM?
Samsung historically has never released workable kernel source.
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Yeah, that's what I'm starting to hear. Are there any good resources or articles that give some pointers on debugging for kernel development?
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panehf said:
Yeah, that's what I'm starting to hear. Are there any good resources or articles that give some pointers on debugging for kernel development?
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Click to collapse
I wish I knew, because I wouldn't mind getting into development either.
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I started working on this last night and had the same experience. I'll keep plugging away at it and post back what I find.
I would love a custom kernel for this thing. This thing could be so much better. A custom kernel and more ROMs would complete me.