[U-Boot] Flag -mno-cache-volatile to bypass the cache

[Wolfgang Denk]

Dear ivanchuklist ivanchu,

In message <51a313240902050730k4f03247etc73ac5579c1f7154 at mail.gmail.com> you wrote:
> 
> I use readl() or writel() to access the hardware but i found a compiler flag
> that bypass the cache for all volatile variables, it uses io versions of
> load/store functions. So, what should i do, make use of write/read functions
> or insert this flag in the makefile?.

Please continue to use the I/O accessor functions. Your specific
compiler version may understand such an option, but don't expect that
any other compiler or architecture provides the same - so better stay
portable and use what was designed exactly for this purpose.

Best regards,

Wolfgang Denk

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