Hi all, I have encountered unstable failed when rewrite M25P128 via raspberry pi, sometimes cannot read out chip id(0x00), sometimes failed @ erase/write process, at beginning I'm confused because another chip(MX25L128) can work fine on the same platform, I found similar issue at maillist(attached below), but in my scenario the unconnected pin is HOLD(low is enable), after connected HOLD pin to VCC(3.3Volt), M25P128 can work fine.
[flashrom] MX25L128 Support
Brian Rak brak at gameservers.com Thu Feb 6 02:19:00 CET 2014 Previous message: [flashrom] MX25L128 Support Next message: [flashrom] status report (write works!) Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] So, I connected WP to ground (instead of leaving it unconnected), and reduced the speed (spispeed=8000). Looking at a binary comparison of the original file versus what was actually written, it seems that it was writing parts of it successfully, but corrupting data every few bytes.
I'm guessing either the raspberry pi can't handle the higher speeds, or I'm getting interference from something.
Either way, I've done a couple erase, write, read cycles and it's been working fine.
On 2/4/2014 8:16 PM, Brian Rak wrote:
So, after realizing that the MX25L256 was the wrong chip, I've obtained a few of the correct chips (MX25L12845EMI-10G). These are detected by flashrom, but writes are failing.
Erase/write done. Verifying flash... FAILED at 0x00000002! Expected=0x55, Found=0x75, failed byte count from 0x00000000-0x00ffffff: 0x3e5cb3 Your flash chip is in an unknown state. Please report this on IRC at chat.freenode.net (channel #flashrom) or mail flashrom at flashrom.org, thanks!
This is using a raspberry pi as a programmer, and:
./flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=32000 -w ../flashrom/ipmi/SMT_313.bin -o debug1
-rw-r--r-- 1 root root 16777216 Jan 2
19:10 ../flashrom/ipmi/SMT_313.bin
Any suggestions here? -o debug1 is attached
flashrom mailing list flashrom at flashrom.org http://www.flashrom.org/mailman/listinfo/flashrom
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