[U-Boot] [v3] command/cache: Add flush command

[Wolfgang Denk]

Dear sun york-R58495,

In message <C707E9F4D8007146BF8DC1424B113AC70B3A435B at 039-SN2MPN1-012.039d.mgd.msft.net> you wrote:
> 
> > Can we not split this into:
> > 
> > 	dcache flush
> > 	icache invalidate
> > 
> > ?  This would make clear what's happening.
> 
> 
> The idea is to reuse existing code with minimum addition. For the applicati
> ons concerned, these two steps are both needed. Splitting them doesn't make
>  things easier.

Reusing code is a Good Thing, but not when it comes at the cost of
obfucating what the code actually does.

> If I have to use existing command, I'd rather to put these two steps under
> icache invalide <addr> <size>.

No, this is not acceptable.  The "icache" command deals with the IC
only, it must not meddle with the data cache (like flushing it).

Best regards,

Wolfgang Denk

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