[Buildroot] [PATCH 2 of 2] Introduction of Amlogic platform to buildroot

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear Stanislav Vasic,

On Sat, 2 Nov 2013 16:10:16 +0000 (UTC), Stanislav Vasic wrote:

> That is what I was told yesterday (about adding it). Amlogic buildroot is 
> too complicated and it's used mainly for running XBMC on top of buildroot. 
> I agree there are too many things (such as non-standard opengl drivers, 
> Amlogic property a/v libraries...).

That's not a problem. We already have a number of packages with OpenGL
drivers for specific platforms:

 package/freescale-imx/gpu-viv-bin-mx6q/ (for i.MX6)
 package/rpi-userland/ (for Rasberry Pi)
 package/sunxi-mali/ (for Allwinner)
 package/ti-gfx/ (for TI OMAP)

> Patch is needed so we know we're building for Amlogic SoC, and for other 
> packages to know which eg. opengl or a/v libs to include in build.

Just do it the way we do it for all of the platforms mentioned above:
add a package in Buildroot, and make it depend on BR2_arm. This way it
will only be visible on ARM platforms, and from this point, users are
expected to know which OpenGL implementation they need for their
platform.

We are also considering adding "demo" defconfigs in Buildroot so that
users could easily find a configuration that enables OpenGL for a given
platform.

> > For all other ARM platforms, the user simply has to choose the
> > appropriate ARM core (Cortex-A8, Cortex-A9, Cortex-A15, etc.), and
> > that's it. We also provide default configurations (see the configs/
> > directory) for various well-known hardware platforms, and those
> > configurations correctly define which ARM core should be used.
> 
> See above, at this point it's not so simple for Amlogic.

See above. Amlogic is not exceptional: it's just like several other
SoCs we already support in Buildroot :-)

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com