[ECOS] Why is the DCACHE and ICACHE enabled twice?

[Mark Salter]

On Fri, 2004-09-24 at 13:57, Krishna Ganugapati wrote:
> Hello, can someone explain why the IXDP425 dcache and icache are enabled 
> twice -
> 
> the first time in
> 
> /usr/src/ecos/packages/hal/arm/xscale/ixdp425/current/include/hal_platform_setup.h
> 
> and the second time
> 
> /usr/src/ecos/packages/arm/xscale/ixp425/current/src/ixp425_misc.c -> 
> hal_hardware_init

In general, you want to enable the caches as early as possible. The
enabling in hal_platform_setup is early in the ROM startup boot. The
early part of RAM startup is hal_hardware_init. The fact that the caches
are enabled twice for ROM startup shouldn't cause a problem. At least I
can't remember any problems popping up before.

--Mark



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