[oe] Hard floating point support for armv7a wmmx2 processor in oe-core

Andrei Gherzan andrei at gherzan.ro
Thu Apr 12 19:43:47 UTC 2012


Cubox as in that 2cm^3 board?
On Apr 12, 2012 8:39 PM, "Nicolas Aguirre" <aguirre.nicolas at gmail.com>
wrote:

> Hi,
>
> I'm building an oe-core minimal image and toolchain for the cubox[1]
> which has a Marvell Armada 510 SoC, also known as Dove.
> It's a armv7 Arm processor with wmmx2 instruction set [2].
>
> I setup a new machine for the cubox and added :
> require conf/machine/include/arm/arch-armv7a.inc
> in my cubox.conf file
>
> I also added
> ARM_FP_MODE = "hardfp"
> TARGET_FPU = "hardfp"
> in my local.conf file.
>
> It finished the build sucessfully for angstrom efl-nodm-image.
>
> I don't know exactly which option enable and where to add it to enable
> hard floating point.
> I see in meta-oe/meta/conf/machine/include/arm/arch-armv7a.inc
> references to the armv7ahf architecture but without idea how to
> activate it.
>
> Btw is the 'a' after armv7 important for me ? As it seems that this
> arm core is an armv7 and not armv7a. I dont find arch-armv7.inc file
> in oe-core.
>
> Another problem is, how to add support for wmmx2 instruction set ?
> There is tune-iwmmxt.inc but it seems to refer to armv5 arch. There is
> a way to enable this instruction set ?
>
> Any help would be appreciate :)
>
> [1] http://www.solid-run.com/products/cubox
> [2] http://www.marvell.com/application-processors/armada-500/
>
> regards,
> --
> Nicolas Aguirre
> Mail: aguirre.nicolas at gmail.com
> Web: http://enna.geexbox.org
> Blog: http://dev.enlightenment.fr/~captainigloo/
>
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