AM335x instruction execute process question

what do you mean by L1&L2 refresh - do you want to disable/enable cache?

Regards

Baskaran

Hi Baskaran,

I want to enable the cache , and  wonder how to make the L1&L2  refresh,

cause i want to get  a run time of  a segment  test code under  the refresh condition.

i think if the code downloaded into the MCU is smaller than the L memory capacity, it won't refresh

if i am wrong ,please correct it .

Thanks,

Stone

you are correct.

To refresh cache you can either have buffers which is bigger that cache size or you can invalidate the cache so the for next reference it will reload the data from RAM.

Thanks for your reply .

I don't know clearly "invalidate the cache so the for next reference it will reload the data from RAM"

should i add the code:disable cache API  in the source file?

Could you give me intrduction? thanks!

for understanding the meaning of "invalidate" in cache context you need to know how cache works.

Please refer http://infocenter.arm.com/help/topic/com.arm.doc.ddi0344k/Cbbehhdg.html for related information.

Then refer cache.h file from StarterWare which provides API's to configure cache.

OK .

I will check the link , and make a reply after understand the cache work.

Thanks