On 2010/07/19 12:49 PM, Stefan Roese wrote: > Hi Rogan, > > On Monday 19 July 2010 12:18:45 Rogan Dawes wrote: >>> How is your FLASH chip connected to your CPU? In 16bit wide mode (which >>> is more common)? >> >> I have no idea. Do you have any suggestions how I can find out? > > I don't suppose you have the schematics for this board?
No, I'm afraid not. >> If I do a normal md over the rest of the flash, I do see expected >> strings from the U-Boot "partition", and the kernel and ramdisk >> partitions. i.e. not duplicated or anything like that. Not sure if that >> answers your question at all? > > No, it doesn't. But the unlocking addresses should give us the result (8bit > vs. 16bit wide connection). What does work for you? The byte addresses or the > word addresses (read manufacturer ID)? > > Byte addresses: > > => mw.b base + aaa aa > => mw.b base + 555 55 > => mw.b base + aaa 90 > => md.b base DNS323B1> mw.b 0xff800aaa aa DNS323B1> mw.b 0xff800555 55 DNS323B1> mw.b 0xff800aaa 90 DNS323B1> md.b 0xff800000 ff800000: 7f 7f cb cb 00 00 08 08 7f 7f cb cb 00 00 08 08 ................ ff800010: 7f 7f cb cb 00 00 08 08 7f 7f cb cb 00 00 08 08 ................ ff800020: 7f 7f cb cb 00 00 08 08 7f 7f cb cb 00 00 08 08 ................ ff800030: 7f 7f cb cb 00 00 08 08 7f 7f cb cb 00 00 08 08 ................ DNS323B1> mw.b ff800000 f0 DNS323B1> mw.b ff800000 ff DNS323B1> md.b 0xff800000 ff800000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ff800010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ff800020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ff800030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > Word addresses: > > => mw.w base + 555 00aa > => mw.w base + 2aa 0055 > => mw.w base + 555 0090 > => md.w base This is quite odd, though. DNS323B1> mw.w 0xff800555 00aa ... never returns. It seems to hang up the board for some reason. > What's the output of those commands? > > Cheers, > Stefan Thanks for your help! _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
