Hi Lukasz, On Friday 12 August 2011 05:11 PM, Lukasz Majewski wrote: > Hi Aneesh, > > On Fri, 12 Aug 2011 16:29:25 +0530 > Aneesh V <ane...@ti.com> wrote: > >> Hi Lukasz, >> >> On Tuesday 09 August 2011 08:11 PM, Lukasz Majewski wrote: >>> Dear all, >>> >>> As we know dcache is now enabled in u-boot. >>> >>> I'm trying to make the S5P Goni target working with d-cache enabled. >>> There are some patches and ideas appearing on the list (e.g. >>> http://patchwork.ozlabs.org/patch/109199/ made by Aneesh V) >>> >>> >>> I'm currently using the u-boot/master branch, >>> SHA1: d26a82023af5771462f7223241ed18cfb7965f71 >>> >>> After some research I can say that flush_dcache_all() and >>> invalidate_dcache_all() are working(at least on my target). >>> >>> However I'm planning to use the "range" versions: >>> flush_dcache_range((unsigned long) (buf), sizeof(buf)); >>> invalidate_dcache_range((unsigned long) (buf), sizeof(buf)); >>> >>> Those versions are not working on the Cortex-A8 (armv7) GONI target. >>> I'd like to ask if anybody was trying to use those functions >>> (defined at cache_v7.c) on other armv7 targets? >> >> I have tested cache on OMAP3(Cortex-A8) and OMAP4(Cortex-A9). Why do >> you think it's not working for you. Did you run some tests? If so, >> what was the result? Are you enabling only L1 or both L1 & L2? Can >> you try the attached crude patch for testing caches. You might have >> to change the addresses according to your platform. If you could run >> it, let me know the results. >> >> best regards, >> Aneesh > > It is embarrassing to admit, but I've __wrongly__ assumed that *_range() > functions are accepting the start address and range for > invalidation/flushing. >
There is already some confusion around that. As pointed out by Reinhard some MIPS implementations actually interpret the parameters that way. But at least for arm, it's [strat, stop). > Yes, they are working when I've realized how to use them :-). Good to know that. best regards, Aneesh _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
