How can I build latest Linux kernel(not android branch) for hikey960


#1

How can I build and deploy latest Linux kernel(not android branch) for hikey960


#2

The build method you could refer: https://github.com/96boards-hikey/l-loader/blob/testing/hikey960_v1.2/cc


#3

@leo-yan
What branch do you advice?
I want to have working USB


#4

Yes, the USB with ADB can work well.

The booting image’s branch you can refer the page: https://github.com/96boards-hikey/tools-images-hikey960/blob/master/build-from-source/README-ATF-UEFI-build-from-source.md; you can see every source code repo (ARM Trusted Firmware/edk2/OpenPlatformPkg/l-loader/uefi-tools) there have pointed the branch in it.

For kernel branch, I am using below repo and branch:
git clone https://android.googlesource.com/kernel/hikey-linaro
cd hikey-linaro
git checkout -b android-hikey-linaro-4.4 origin/android-hikey-linaro-4.4


#5

@leo-yan
But I am looking for Linux Kernel with debian/ubuntu distro not android


#6

@xlazom00, let me check this internally for debian distro with UEFI+ARM-TF, in the past time I mainly used AOSP or a very simple ramdisk for the works.


#7

@xlazom00 Integration team told me this work will take ~1 week to add the debian build in CI and integrate with UEFI/GRUB. So currently UEFI+Debian is not available.

You could monitor the page http://www.96boards.org/documentation/ConsumerEdition/HiKey960/Downloads/README.md/ after related stuffs have been prepared. After I receive some notification, will keep you posted in this thread as well.


#8

@leo-yan
We use OpenEmbedded version for now
https://builds.96boards.org/snapshots/reference-platform/openembedded/morty/hikey960/rpb/latest/

but USB isn’t working


#9

@xlazom00 could you confirm now you are using OE with kernel 4.9? If so, I will check now 4.9 kernel has supported USB driver or not?

Please aware, I think now kernel 4.4 branch is most readiness branch; 4.9 branch may miss many patches at current stage…


#10

@leo-yan
from https://builds.96boards.org/snapshots/reference-platform/openembedded/morty/hikey960/rpb/latest/
Image–4.9+git0+dfd2f77df3-r0-hikey960-20170609082329-69.bin
it really looks like 4.9 kernel :slight_smile:


#11

Confirmed with landing team, now 4.9 kernel has not supported USB driver; but this is in their TODO list in next 1~2 weeks.


#12

@leo-yan
Is it somehow possible to compile android working kernel that will work with OE rootfs or debian ?


#13

this is my .config that work for branch working-android-hikey-linaro-4.4
http://paste.ubuntu.com/24907585/

and with qualcomm debian rootfs it all works kind of "fine"
at least usb with usb network adapter


#14

Great! Thanks for sharing this.


#15

@leo-yan

Why we don’t have latest patches sets for kernel
in https://github.com/96boards-hikey/linux
branch working-android-hikey-linaro-4.4
?

And what is the purpose for android branches in this(https://github.com/96boards-hikey/linux ) repo ?


#16

I get wired behaviour with android-hikey-linaro-4.4 from
https://android.googlesource.com/kernel/hikey-linaro

My application use 8 thread but it only use one CPU core
And it don’t migrate to big core too.

All fine with
working-android-hikey-linaro-4.4 from

I disabled all android stuff from kernel
any idea ?


#17

This may related with cpuset, could you do below setting before you run your program:

echo 0-7 > /dev/cpuset/background/cpus
echo 0-7 > /dev/cpuset/foreground/cpus
echo 0-7 > /dev/cpuset/top-app/cpus
echo 0-7 > /dev/cpuset/system-background/cpus


#18

Please note, AFAIK https://github.com/96boards-hikey/linux is mainly used by Landing team to maintain two branches, one is for kernel 4.9 [1], another branch [2] is mainly used for Linux mainline kernel upstreaming. These branches are working in progress but not for release purpose.

So for common case, the official AOSP kernel release branch is [3] and this branch is encouraged to be used.

[1] https://github.com/96boards-hikey/linux/tree/hikey960-v4.9
[2] https://github.com/96boards-hikey/linux/tree/hikey960-upstream-rebase
[3] https://android.googlesource.com/kernel/hikey-linaro; branch: origin/android-hikey-linaro-4.4


#19

I don’t have any /dev/cpuset


#20

Could you enable kernel config: CONFIG_SCHED_DEBUG=y; and after system boot up input below command: echo NO_ENERGY_AWARE > /sys/kernel/debug/sched_features

This try can disable energy awared scheduling, so the tasks can be spread to multi-cores. Otherwise, the scheduler may pack small tasks onto single core.