[U-Boot] [PATCH v2] mx6: add support of multi-processor command

Pavel Machek pavel at denx.de
Tue Jul 8 13:24:54 CEST 2014


On Sun 2014-06-22 17:09:28, Nikolay Dimitrov wrote:
> Hi Gabriel,
> 
> >This allows u-boot to load different OS or Bare Metal application on the
> >different cores of the i.MX6DQ.
> >For example: we can run Android on cpu0 and a RT OS like QNX/FreeRTOS on cpu1.
> 
> I think this explanation is a little misleading - if you run
> unmodified versions of Android & some RTOS, they will fight for the
> imx6 interrupt controller, power management and clocks. As far as I
> know, imx6 is not appropriate for AMP (asymmetric multi-processing)
> because it doesn't support virtualization extensions.

I did AMP configuration on socfpga (similar to i.mx6 in this
regard). Yes, Linux needs to be modified for this to work... but it
seems mostly unmodified u-boot can be used.

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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