Custom Kernel developement for Android Emulator

Discussion:

Peerke

2011-01-31 12:01:45 UTC

Hi,

I like to build my own custom kernel to use with the Android Emulator.
I know how to build my own Android Emulator image and how to set the
kernel that you want use when booting the emulator. But I have no idea
how to build a custom kernel for the emulator and what should be in
there to keep the emulator working.

Does anyone has some starting point for me or some documentation?

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raja pavan

2011-01-31 12:24:30 UTC

Permalink

- Download the goldfish kernel from android git.
- Install android sdk on your machine
- /home/raja/Downloads/android-sdk-linux_86/platforms will have a folder
each for avd api versions
- Create avd for api of your choice
- Build goldfish kernel for you ur choice of kernel configuration and place
in folder corresponding to avd's api
- /home/raja/Downloads/android-sdk-linux_86/platforms/android-9/images will
have kernel-qemu, replace with your kernel.

Post by Peerke
Hi,
I like to build my own custom kernel to use with the Android Emulator.
I know how to build my own Android Emulator image and how to set the
kernel that you want use when booting the emulator. But I have no idea
how to build a custom kernel for the emulator and what should be in
there to keep the emulator working.
Does anyone has some starting point for me or some documentation?
--
website: http://groups.google.com/group/android-kernel

--
unsubscribe: android-kernel+***@googlegroups.com
website: http://groups.google.com/group/android-kernel

Peerke

2011-01-31 13:20:43 UTC

Permalink

Thanks for your fast response!

I have 2 questions:

* How do I download the goldfish kernel from the android git? I
downloaded a kernel with 'git clone git://android.git.kernel.org/kernel/common.git',
but this doesn't give me a goldfish_defconfig. So I guess I need to
download something else.

* How to build a goldfish kernel? That works in the same way as any
other linux kernel? (Starting from the goldfish_defconfig?)

Post by raja pavan
- Download the goldfish kernel from android git.
- Install android sdk on your machine
- /home/raja/Downloads/android-sdk-linux_86/platforms will have a folder
each for avd api versions
- Create avd for api of your choice
- Build goldfish kernel for you ur choice of kernel configuration and place
in folder corresponding to avd's api
- /home/raja/Downloads/android-sdk-linux_86/platforms/android-9/images will
have kernel-qemu, replace with your kernel.

--
unsubscribe: android-kernel+***@googlegroups.com
website: http://groups.google.com/group/android-kernel

raja pavan

2011-01-31 13:29:17 UTC

Permalink

(1)
http://android.git.kernel.org/?p=kernel/common.git;a=tree;h=b0d93fb0426911d0329f861f22c59f1c72cff815;hb=b0d93fb0426911d0329f861f22c59f1c72cff815

Open this link and click on snapshot, this will download the *latest version
of 2.6.29 goldfish kernel*.
(2) make menuconfig and select gold fish as your target [I did not check
these step, but I am almost sure these are the steps]

You can chose the desired config for your kernel-qemu at this step.

If you need to build for ARM , make ARCH=arm
CROSS_COMPILE=/usr/local/arm/arm-gcc/bin/gnu-arm- Image(please use
sppropriate name to your gcc cross compiler)

(3) Rename Image (arch/arm/boot) to kernel-qemu

(4) Use it with emulator [steps from Previous Mail]

(5) You can create a sophisticated qemu using goldfish, I rely on this even
for learning arm assembly.

Post by Peerke
Thanks for your fast response!
* How do I download the goldfish kernel from the android git? I
downloaded a kernel with 'git clone git://
android.git.kernel.org/kernel/common.git',
but this doesn't give me a goldfish_defconfig. So I guess I need to
download something else.
* How to build a goldfish kernel? That works in the same way as any
other linux kernel? (Starting from the goldfish_defconfig?)

place

Post by raja pavan
in folder corresponding to avd's api
- /home/raja/Downloads/android-sdk-linux_86/platforms/android-9/images

will

Post by raja pavan
have kernel-qemu, replace with your kernel.

--
website: http://groups.google.com/group/android-kernel

--
unsubscribe: android-kernel+***@googlegroups.com
website: http://groups.google.com/group/android-kernel

Peerke

2011-01-31 13:32:16 UTC

Permalink

Somehow the link that you provided doesn't work. I get a '404 - No
such project ' message.

(1)http://android.git.kernel.org/?p=kernel/common.git;a=tree;h=b0d93fb04...
Open this link and click on snapshot, this will download the *latest version
of 2.6.29 goldfish kernel*.
(2) make menuconfig and select gold fish as your target [I did not check
these step, but I am almost sure these are the steps]
You can chose the desired config for your kernel-qemu at this step.
If you need to build for ARM , make ARCH=arm
CROSS_COMPILE=/usr/local/arm/arm-gcc/bin/gnu-arm- Image(please use
sppropriate name to your gcc cross compiler)
(3) Rename Image (arch/arm/boot) to kernel-qemu
(4) Use it with emulator [steps from Previous Mail]
(5) You can create a sophisticated qemu using goldfish, I rely on this even
for learning arm assembly.

place

Post by raja pavan
in folder corresponding to avd's api
- /home/raja/Downloads/android-sdk-linux_86/platforms/android-9/images

will

Post by raja pavan
have kernel-qemu, replace with your kernel.

--
website:http://groups.google.com/group/android-kernel

--
unsubscribe: android-kernel+***@googlegroups.com
website: http://groups.google.com/group/android-kernel

raja pavan

2011-01-31 13:46:13 UTC

Permalink

that may not be the exact link but keywords are
http://android.git.kernel.org/
projects <http://android.git.kernel.org/> /
kernel/common.git<http://android.git.kernel.org/?p=kernel/common.git;a=summary>
(2.6.29, goldfish)
snapshot

I was able to download and start the build. need to test the same on
emulator.

Post by Peerke
Somehow the link that you provided doesn't work. I get a '404 - No
such project ' message.

Post by raja pavan
(1)

http://android.git.kernel.org/?p=kernel/common.git;a=tree;h=b0d93fb04...

Post by raja pavan
Open this link and click on snapshot, this will download the *latest

version

Post by raja pavan
of 2.6.29 goldfish kernel*.
(2) make menuconfig and select gold fish as your target [I did not check
these step, but I am almost sure these are the steps]
You can chose the desired config for your kernel-qemu at this step.
If you need to build for ARM , make ARCH=arm
CROSS_COMPILE=/usr/local/arm/arm-gcc/bin/gnu-arm- Image(please use
sppropriate name to your gcc cross compiler)
(3) Rename Image (arch/arm/boot) to kernel-qemu
(4) Use it with emulator [steps from Previous Mail]
(5) You can create a sophisticated qemu using goldfish, I rely on this

even

Post by raja pavan
for learning arm assembly.

Post by raja pavan
- Download the goldfish kernel from android git.
- Install android sdk on your machine
- /home/raja/Downloads/android-sdk-linux_86/platforms will have a

folder