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. Yes, they are working when I've realized how to use them :-). My tests are not so sophisticated as yours since I'm using TRACE32 to observe if the cache has been invalidated/flushed. I will try to apply your test suite. Thanks for sharing them. -- Best regards, Lukasz Majewski Samsung Poland R&D Center Platform Group _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
