superna9999 / meson_gx_mali_450

Amlogic GX Mali support for Mali-450 based SoCs, for Mainline Linux only

Mali Utgard support for Amlogic Meson GX Family

The Following SoCs are using the Mali-450 IP :

• Meson GXBB : S905
• Meson GXL : S905X and S905D

This distribution adds platform support for these families.

HowTo

Apply the linux patches to upstream linux source and build.

$ KDIR=/path/to/amlogic/upstream/linux ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- ./build.sh

Copy mali.ko to root filesystem and boot.

Sources

Original Mali kernel driver can be downloaded from : https://developer.arm.com/products/software/mali-drivers/utgard-kernel

The xf86-video-armsoc should be used in user space for X11 :

• https://github.com/superna9999/xf86-video-armsoc

along the r6p1-01rel0 libMali.so binary you can find at :

• http://openlinux.amlogic.com:8000/download/ARM/filesystem/arm-buildroot-2016-08-18-5aaca1b35f.tar.gz

In the buildroot/package/opengl/src/lib/arm64/r6p1/m450-X/ directory.

Place it into /usr/lib/mali/ and configured to fetch the EGL libraries by adding a file into :

/etc/ld.so.conf.d/mali.conf

containing :

/usr/lib/mali

And running :

# ldconfig

Mali libraries should have the following symlinks :

libEGL.so -> libEGL.so.1
libEGL.so.1 -> libEGL.so.1.4
libEGL.so.1.4 -> libMali.so
libGLESv1_CM.so -> libGLESv1_CM.so.1
libGLESv1_CM.so.1 -> libGLESv1_CM.so.1.1
libGLESv1_CM.so.1.1 -> libMali.so
libGLESv2.so -> libGLESv2.so.2
libGLESv2.so.2 -> libGLESv2.so.2.0
libGLESv2.so.2.0 -> libMali.so
libMali.so

meson_gx_mali_450's Issues

black background and segmentation fault on program exit

hi neil,

i'm successfully using your kernel module, the r6p1 x11 blob and your armsoc xorg driver on a s905w tv box. working means that i can run gles and opengl apps like es2gears_x11 or glxgears (via gl4es opengl wrapper lib) fine. there are only some minor strange things, which i'm not sure about maybe missing some patch or config option somewhere or if they are simply side effects of using the mali blobs not really intended to be used for maline kernels and such hardware. these strange things are:

• the desktop background and sometimes also the background of windows is black instead of the intended/configured color (this must come from the armsoc driver, as i'm enabling mali GLES support explicitely via LD_LIBRARY_PATH if an app needs it, but i do not run my desktop - xfce btw. - by default with it enabled)
• applications segfault and create a crashdump (for instance es2_info) or hang (for instance es2gears_x11) on their otherwise normal exit
• glxinfo via gl4es prints out the following before its segfault/crashdump - not sure if it is related:
  [xcb] Unknown request in queue while appending request [xcb] Most likely this is a multi-threaded client and XInitThreads has not been called [xcb] Aborting, sorry about that. glxinfo: ../../src/xcb_io.c:151: append_pending_request: Assertion "!xcb_xlib_unknown_req_pending" failed. Aborted (core dumped)
• one app (zyn-fusion - a open-source synthesizer) gives errors like
  LIBGL: ERROR: EGL Error detected: EGL_BAD_ALLOC LIBGL: ERROR: EGL Error detected: EGL_BAD_ALLOC LIBGL: ERROR: EGL Error detected: EGL_BAD_MATCH LIBGL: ERROR: EGL Error detected: EGL_BAD_ALLOC LIBGL: ERROR: EGL Error detected: EGL_BAD_MATCH
  and finally fails to initialize
• for all the above i do not see anything obviously wrong logged by the kernel with the mali running with mali_debug_level=5
• all the above is working fine with mesa soft rendering on this machine
• all of the above is working fine on a rockchip rk3288 machine with mainline kernel and similarly hacked together mali support

all those are more cosmetic problems, as the basic functionality is there - and this is really great, that all your work made it possible to use programs who need gl acceleration on such hardware. please let me know in case you want to have any more debugging info.

a little side note: is it intended, that the r6p1 and r7p0 libMali.so binaries for arm64 450-x in your git repo are identical?

a lot of thanks for all your efforts in the linux amlogic area and best wishes - hexdump

Compile error

Hello I 'am getting this error when try to compile the mali driver r6p1 :
/root/project/meson_gx_mali_450/driver/src/devicedrv/mali/platform/meson/meson.c:69:32: fatal error: linux/clk/clk-conf.h: No such file or directory

I 'am using linux kernel for amlogix S905X board:
https://github.com/150balbes/Amlogic_s905-kernel/tree/armbian

Kernel version 3.14.29

Thanks for help