Messages in this thread | | | Date | Fri, 24 May 2013 16:03:22 +0200 | From | Jean-Christophe PLAGNIOL-VILLARD <> | Subject | Re: [PATCH] ARM: at91: Fix: Change internal SRAM memory type to "MT_MEMORY_SO" |
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On 12:20 Fri 24 May , Russell King - ARM Linux wrote: > On Fri, May 24, 2013 at 07:11:04AM +0000, Yang, Wenyou wrote: > > The story is: for sama5d3x with Cortex-A5 core, if not so, when copying > > code snippet to the internal SRAM, then jump to run this code, but fail > > to run. > > And that is where your mistake is - you forgot that you're working with > a CPU with harvard caches which will require some cache maintanence > between copying the code and executing it. > > You want to look at flush_icache_range() rather than making this memory > strongly ordered.
I understand your point but today we map a SRAM as MT_DEVICE
I do not think it's the best
Best Regards, J.
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