Problems finding/compiling kernel images for Gen9

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Hello, does anyone have a working .config file to compile a kernel that will work on the Archos Gen9 or any links to information specific to what is needed for our devices?

I have tried compiling the kernel from the ICS source on ubuntu 11.10 but I am unable to get it to boot and had to work around many errors just to get it to create the zImage.

Originally Posted by sirduke989

Hello, does anyone have a working .config file to compile a kernel that will work on the Archos Gen9 or any links to information specific to what is needed for our devices?

I have tried compiling the kernel from the ICS source on ubuntu 11.10 but I am unable to get it to boot and had to work around many errors just to get it to create the zImage.

I know where you can found what you want, you gonna filp out, i'm sure of it












in the root folder of the linux-ics kernel is a file called linux.config, now get things compiled and GOOD LUCK

How set environment for build kernel ICS !

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Originally Posted by sirduke989

Hello, does anyone have a working .config file to compile a kernel that will work on the Archos Gen9 or any links to information specific to what is needed for our devices?

I have tried compiling the kernel from the ICS source on ubuntu 11.10 but I am unable to get it to boot and had to work around many errors just to get it to create the zImage.

HI!

First you need to update your environment ( Ubuntu 11.10) with all the neccessary .lib
- sudo apt-get install gnupg flex bison gperf build-essential zip curl zliblg-dev libc6-dev libncurses5-dev x11proto-dev libx11-dev libreadline-dev libgl1-mesa-dev tofrodos python-markdown libxml2-utils xsltproc gettext make info libsdl-dev libxgtk2.6-dev automake
- download your toolchain => http://forum.xda-developers.com/show....php?t=1328027
- copy linux.config into /arch/arm/configs/archos_defconfig
For build zImage :
cd into kernel source directory ...
- export ARCH=arm
- export CROSS_COMPILE=/your directory/arm-archos/usr/bin/arm-linux-uclibcgnueabi-
- make ARCH=arm archos_defconfig
- make -j2
**************That's all *******
.....if you not get errors - you should find zImage into /arch/arm/boot/zImage

Thanks for the info, it appears that my problems may be coming from using an outdated toolchain. Basically I am trying to compile an updated kernel that I can run Ubuntu on but so far my kernel does not even boot to the boot menu that I created or the one in the Ubuntu thread that is using fbmenu.

Originally Posted by surdu_petru

...
- download your toolchain => http://forum.xda-developers.com/show....php?t=1328027
- copy linux.config into /arch/arm/configs/archos_defconfig
For build zImage :
cd into kernel source directory ...
- export ARCH=arm
- export CROSS_COMPILE=/your directory/arm-archos/usr/bin/arm-linux-uclibcgnueabi-
- make ARCH=arm archos_defconfig
- make -j2
**************That's all *******
.....if you not get errors - you should find zImage into /arch/arm/boot/zImage

I do not know why it will be a huge size of the compiled kernel modules?
Any idea?

Originally Posted by szanalmas

I do not know why it will be a huge size of the compiled kernel modules?
Any idea?

The kernel modules contain some extra symbol information by default.
You may use the strip command to get rid of those.
Search the kernel Makefile for the command, i'm not sure of the function call right now...
Anyway it doesn't matter in the end, because the modules have the same size when they got loaded to RAM.

BTW, if you use my toolchain, you better unpack it in /opt.
There are some hard coded path's in some of the libraries.
If the toolchain is placed somewhere else you might run into trouble.
See this as well... http://forum.xda-developers.com/show...90&postcount=8

If someone needs a 64Bit toolchain built please tell me.

Best regards,

scholbert

Originally Posted by scholbert

The kernel modules contain some extra symbol information by default.
You may use the strip command to get rid of those.
Best regards,
scholbert

Yes, thanks, strip working. strip -g -S -d -x -X *.ko and Hawaii!

Hi!

Thanks to the short information on #3 I was able to compile a kernel image of my own. I was curious to see if we can use another toolchain
like the one from Linaro which uses an 4.7 gcc (it has no specific tweaks for archos device like the toolchain from scholbert, I think).

After some modifications of the kernel (thanks google search!!) it compiles and a zImage was generated...which doesn't booted at all (black screen) :(

Then a hint came up on planet linaro : "Kernel not booting with Linaro GCC?". I tried it yesterday and it boots
--> Don't expect huge speed improvements (if there any). I get very similar results at the quadrant benchmark compared to the kernel provided by surdu_petru.

My patches to the kernel are located at the patch.txt file.

PS: I would like to try out the android-toolchain 4.7 (ICS), which is also provided by linaro.
It compiles, but at the final linker step a
"DIV usage mismatch between arch/arm/boot/compressed/misc.o and output"
is thrown. Maybe we have to wait once the patch is merged into binutils release - any help on this issue?

UPDATE: DIV usage mismatch solution
I found out, that the linker gold produces problems on my kernel build. So I changed the build process to use the bfd linker which compiles the kernel successfully.
Load the android build toolchain:

wget --no-check-certificate https://android-build.linaro.org/jenkins/view/Toolchain/job/linaro-android_toolchain-4.7-bzr/lastSuccessfulBuild/artifact/build/out/android-toolchain-eabi-4.7-daily-linux-x86.tar.bz2

Extract it:

tar xfj android-toolchain-eabi-4.7-daily-linux-x86.tar.bz2

Go into that directory and replace ld which points to ld.gold with that binary of ld.bfd:

cd android-toolchain-eabi
find . -name "*gold"
cp ./bin/arm-linux-androideabi-ld.bfd ./bin/arm-linux-androideabi-ld
cp ./bin/arm-eabi-ld.bfd ./bin/arm-eabi-ld
cp ./arm-eabi/bin/ld.bfd ./arm-eabi/bin/ld
cp ./arm-linux-androideabi/bin/ld.bfd ./arm-linux-androideabi/bin/ld

Then perform a build as normal.