linux-headres-4.18-rc7-sunxi for dkms

jslav

I set up Ubuntu Bionic on OrangePi One Plus ( H6 based )
The next step - setting up MALI drivers. (mali-midgard-dkms)


Bionic supports dkms technology.
However, it requires linux headers.

Bionic apt offers headers of linux kernel 4.15
I don't know where to get exact headers for my bionic
linux-headres-4.18-rc7-sunxi
I found some kernel headers here
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.18-rc7/
But not sure they are exact
It is possible, that
linux-headres-4.18-rc7-sunxi
is not the same as
  linux-headers-4.18.0-041800rc7_4.18.0-041800rc7.201807292230_all.deb
  linux-headers-4.18.0-041800rc7-generic_4.18.0-041800rc7.201807292230_amd64.deb
  linux-headers-4.18.0-041800rc7-lowlatency_4.18.0-041800rc7.201807292230_amd64.deb


Where to get sunxi version of headers?

Werner

Ubuntu themselves do neither create images especially for sunxi64 nor do they have matching linux headers. Go for ARM64.
Or use Armbian as base.

jslav

I didn't find armbian kernel build for H6 based platforms.
are you familiar with this build system internals?

jslav

I found it yet.
It requires EXPERT=yes variable, and while boar selection choosing WIP mode option

igorpec

You can easily stop here. DRM video driver is n/a / buggy which means there is no HDMI out at the moment. The rest somehow works, headers are included at the build time.

jslav

Igor. I want to use mali without display driver. Only for computing.
First, I need to test is mali driver able to work without display and X11.
Probably, I will find some bugs and log them to ARM.

Previously, I used Platform OrangePi PC with MALI 400.
On this platform I use libMali.so driver which implements OpenGL ES interface.

Do you know does mali-t76x-...-driver provide OpenGL functionality correctly?

igorpec

I am not an expert in this particular field but I think OpenGL is probably not supported. GLES only.

jslav

Are you aware about dkms.

While building dkms driver

1. DKMS make.log for mali-midgard-16.0 for kernel 4.19.4-sunxi64 (aarch64)
   
2. Tue Nov 27 11:11:46 UTC 2018
   
3. make -C /lib/modules/4.19.4-sunxi64/build M=/var/lib/dkms/mali-midgard/16.0/build EXTRA_CFLAGS="-I/var/lib/dkms/mali-midgard/16.0/build/../../../../include -I/var/lib/dkms/mali-midgard/16.0/build/../../../../tests/include -DCONFIG_MALI_MIDGARD=m -DCONFIG_MALI_DEVFREQ=y -DCONFIG_MALI_EXPERT=y -DCONFIG_MALI_BACKEND=gpu -DCONFIG_MALI_PLATFORM_DEVICETREE=y"  KBUILD_EXTRA_SYMBOLS="/var/lib/dkms/mali-midgard/16.0/build/../../../base/ump/src/Module.symvers /var/lib/dkms/mali-midgard/16.0/build/../../../../drivers/base/kds/Module.symvers" modules
   
4. make[1]: Entering directory '/usr/src/linux-headers-4.19.4-sunxi64'
   
5. Makefile:619: arch//Makefile: No such file or directory
   
6. make[1]: *** No rule to make target 'arch//Makefile'.  Stop.
   
7. make[1]: Leaving directory '/usr/src/linux-headers-4.19.4-sunxi64'
   
8. Makefile:39: recipe for target 'all' failed
   
9. make: *** [all] Error 2
   

Copy code

Missing Makefile at /usr/src/linux-headers-4.19.4-sunxi64/arch
As I see, ther is an issue with headers itself
Is there any dkms compliant linux-headers-* package?

jslav

got it. The ARCH environment variable was not recognized
explicit ARCH setting moved me further
sudo dkms build -m mali-midgard -v 16.0 -a arm64

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