Re: [Linaro-uefi] [ARM-UEFI]not find cci-400 settings in uefi code

Hi Tiger,

On Fri, Feb 28, 2014 at 02:54:11PM +0800, TigerLiu@via-alliance.com wrote:

...

UEFI boots on a single A7 code on TC2, so it doesn't need CCI-400.

So, for a big.LITTLE platform, although it included 2 clusters and 4 cores.

But if UEFI used only 1 core as BSP, put other cores into WFI/WFE state, then no need to care CCI-400 settings?

Will OS kernel set CCI-400 registers?

I think in most real systems this will be done by pre-UEFI firmware, or even external system controllers.

For an example, look at the ARM Trusted Firmware suite[1], which is what is used on the TC2 platform.

[1] https://github.com/ARM-software/arm-trusted-firmware

Regards,

Leif