Hello Heiko, On Tue, Mar 08, 2011 at 02:08:26PM +0100, Heiko Schocher wrote: > Hello, > > as I am actual trying to get the keymile boards in sync with actual > mainline u-boot, I faced the following Problem with an Intel Strata > Flash on the mgcoge (mpc8247 based board): > > I couldn;t unprotect/erase/write/protect some (not all!) Flash sectors. > > For Example, I could do this without errors on the sectors where > u-boot sits (First three sectors), but not with the environment (next > two sectors)!
That's exactly the problem I had, but triggered by another valid command sequence. So it is also a flash bug. Have you searched with google for your chip plus "errata" or "specification update" as they call that ? > > After some debugging, I found out, that, if I revert commit > > commit 54652991caedc39b2ec2e5b49e750669bfcd1e2e > Author: Philippe De Muyter <[email protected]> > Date: Tue Aug 17 18:40:25 2010 +0200 > > Work around bug in Numonyx P33/P30 256-Mbit 65nm flash chips. > > I have "ported" U-boot to a in house made board with Numonyx Axcell > P33/P30 > 256-Mbit 65nm flash chips. > > After some time :( searching for bugs in our board or soft, we have > discovered that those chips have a small but annoying bug, documented in > "Numonyx Axcell P33/P30 256-Mbit Specification Update" > [...] > > It works again fine, and without problems ... did somebody faced > similiar issues with the cfi driver? Some Ideas? It seems like we'll need to check the flash chip type before issuing one command sequence or another. Philippe -- Philippe De Muyter +32 2 6101532 Macq SA rue de l'Aeronef 2 B-1140 Bruxelles _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
