On 06/14/2012 10:48 PM, R, Sricharan wrote: > Hi Tom, > > On Fri, Jun 15, 2012 at 12:31 AM, Tom Rini <tr...@ti.com> wrote: >> If we are built with D-CACHE enabled but have run 'dcache off' and then >> attempt to flush unaligned regions we spam the console with problems >> that aren't true (as the cache was off). >> > Today we do cache maintenance operations after the dcache is turned off. > One example is before jumping to kernel, we try to invalidate the caches, > in cache turned off state. So with this patch those maintenance calls will > do nothing, which is not correct.
Ah yes, But, shouldn't we be doing these same operations as part of turning the cache off? > If it is a problem with unaligned regions, then that is the only > thing to be fixed > right ?. Just trying to understand why this change is required ? The problem is that within the USB/network/filesystem stacks we have a lot of not cache safe alignments apparently. Without this every '#' of a tftp gives a screen full of error printfs. So tftp'ing a kernel takes minutes, not seconds, to complete. -- Tom _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
