On Wed, Aug 24, 2011 at 11:12 AM, Wolfgang Denk <w...@denx.de> wrote:
> Dear Anton Staaf,
>
> In message
> <CAF6FioWBsjFa+QdFNHEQGO50eLoqZMc--Yt3-iYX6DWr=hc...@mail.gmail.com> you
> wrote:
>>
>> >> 4. get_dcache_line_size() can be simply defined as
>> >> #define get_dcache_line_size() CONFIG_SYS_CACHE_LINE_SIZE if we
>> >> _really_ want to save a few bytes.
>> >
>> > Actually I fail to understand why we would ever need
>> > get_dcache_line_size() in a boot loader.
>>
>> It is required so that we can correctly allocate buffers that will be
>> used by DMA engines to read or write data. The reason that these
>
> No, it is definitely NOT needed for this purpose - we have been using
> CONFIG_SYS_CACHE_LINE_SIZE for more than a decade without problems, so
> I don't really understand why we now would need a new function for
> this?
Ahh, I misunderstood your question. I thought you were asking about
the need to know the cache line size. Not it's specific
implementation as a function call. In which case, I agree, and am
happy to use CONFIG_SYS_CACHE_LINE_SIZE, though I don't see any
definitions of CONFIG_SYS_CACHE_LINE_SIZE in the entire U-Boot tree.
What have I missed?
Thanks,
Anton
>
> Best regards,
>
> Wolfgang Denk
>
> --
> DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
> Brain: an apparatus with which we think we think. - Ambrose Bierce
>
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
