On Fri, 19 Apr 2013 12:32:15 +0800 Chi Zhang <[email protected]> wrote:
> 在 2013年4月2日 星期二 15:19:25，Stefan Tauner 写道： > > > > Thank you very much for this information. I had to guess the device IDs > > because they are not mentioned in the datasheet. > > The AT25F1024A has 0x60, the AT25F512A has 0x65, the AT25F025B has > > 0x6500... but apparently assuming at least some sanity has failed to > > reflect the truth. > > > > So, according to your verbose log your AT25F512 has the same ID as the > > AT25F1024A (according to its datasheet). *sigh* > > Before I'll make some changes to the code I'll try to find someone with > > a AT25F1024 chip to test. > > Bought an AT25F1024(without A) recently and tested. > http://paste.flashrom.org/view.php?id=1620 > > Found a PCN from Atmel, stating that AT25F512's device code is 0x60, and the > new AT25F512A's is 0x65: > http://www.baite.com.hk/uploadFiles/service/SB_serial_mod_PCN_25F512.pdf Oh that's very interesting. Thanks a lot for digging this up! > Another interesting thing is that my AT25F512 can actually hold 128KBytes of > data. I generated the test data from /dev/urandom and confirmed that it > contains no repetitive patterns with lzma -9 (a fake 128KB "random" data file > made up with two 64KB ones with same content can be compressed into ~65KB > while mine can not). All bytes seems to be functional, I had zeroed out and > erased the whole chip and I got 128KB 0x00 an 128KB 0xff. After a power cycle > the random data written to the chip can be preserved. That's very odd. Maybe they just relabelled the AT25F1024s as AT25F512? I am only aware of (non-functional) fakes the other way round (and you too obviously ;) I'll change the ID of AT25F512 and commit that later. Thanks a lot for your efforts. -- Kind regards/Mit freundlichen Grüßen, Stefan Tauner _______________________________________________ flashrom mailing list [email protected] http://www.flashrom.org/mailman/listinfo/flashrom
