ubuntu-phone team mailing list archive

[David Peter <maildavidpeter@xxxxxxxxx>]

Getting closer

Method inline building modifying device/lge/hammerhead/BoardConfig.mk with:
TARGET_KERNEL_UBUNTU := false
adding
TARGET_KERNEL_CONFIG := hammerhead_defconfig
TARGET_KERNEL_SOURCE := kernel/lge/hammerhead
and
BOARD_KERNEL_IMAGE_NAME := zImage-dtb

I have a dtb kernel, now recovery is working. Ubuntu Touch still does not
boot.​
​ Checking the installed-files.txt compared to the one coming from the
prebuilt kernel it
sounds like the only missing stuff now are
/system/lib/modules/3.4.0-1-hammerhead/​
​ libs.
​





On Thu, Jun 26, 2014 at 12:00 AM, David Peter <maildavidpeter@xxxxxxxxx>
wrote:

> Hi Guys,
>
> I feel like playing with the Hammerhead Kernel
>
> I have figured out how to build the project: https://code-review.phablet.ubuntu.com/p/aosp/platform/manifest.git
> -b <https://code-review.phablet.ubuntu.com/p/aosp/platform/manifest.git-b>
> phablet-4.4.2_r1
> then flash my hammerhead using rootstock-touch-install and a daily image.
> So far so good.
>
>
> Next, what do I have to do with the kernel sources project
> https://code-review.phablet.ubuntu.com/ubuntu/kernel/trusty -b hammerhead
> ?
>
>
> I have tried 3 ways:
>
> 1) building kernel in tree
> - copy the kernel sources to kernel/lge/hammerhead
> - modify device/lge/hammerhead/BoardConfig.mk
>   in order to make TARGET_KERNEL_UBUNTU := false
>   and add TARGET_KERNEL_CONFIG := hammerhead_defconfig
>                TARGET_KERNEL_SOURCE := kernel/lge/hammerhead
>
> --> built kernel image smaller than the prebuilt one from rsalveti PPA (I
> guess it is a dtb story). Nothing will work
>
>
> 2) building kernel in tree with cyanogenmod BoardConfig.mk
>
> --> built kernel image sizing the same as the prebuilt one from rsalveti
> PPA (a dtb one by the way). Recovery works, Ubuntu-Touch won't boot though
>
>
> 3) building myself the kernel sources
> export ARCH=arm
> export SUBARCH=arm
> export CROSS_COMPILE=arm-eabi-
> make hammerhead_defconfig
> make
>
> ... no result yet, it was still building when I dicided to write this
> email as I don't know what to do next.
>
>
>
> What is the proper way to build the kernel and to produce the img boot
> recovery and system files?
> Can you give me some guidelines?
>
>
> I am keeping notes of that process and will suggest a wiki update.
>
> Regards
> David
>