On Fri, 12 Nov 2010 09:58:53 -0600 Kumar Gala <ga...@kernel.crashing.org> wrote:
> > On Nov 4, 2010, at 11:47 AM, Wood Scott-B07421 wrote: > > > Joakim Tjernlund wrote: > >> Trial and error suggests that map_flash_by_law1 needs > >> an isync(padding with 4 nop's also did the trick) > >> after updating LBLAWAR1 to make sure the the change has > >> reached the HW before continuing with the code that depends on it. > >> Add an isync to remap_flash_by_law0 for good measure too. > > > > To be totally safe, we probably want to do a readback plus twi (to turn a > > data dependency into a flow dependency) before the isync. > > We only do the 'twi' for loads/in_beX not stores/out_beX. Yes, and the readback is a load. -Scott _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
