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. - k _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
