[flashrom] Sweating by programming SPIs
Stefan Tauner
stefan.tauner at alumni.tuwien.ac.at
Sat Jun 13 09:54:25 CEST 2015
On Thu, 11 Jun 2015 22:09:55 +0200
jackjean <jackjean at vivaldi.net> wrote:
>
>
> Good evening all,
>
> After heaving sweated for months, I finally call for help at the
> community...
>
> My target is to program several SPI chips in order to repare some ASUS
> laptops, which was solved before by purchasing pre-programmed BIOS Chips
>
>
> I first tried to access with an SOIC "gripper" clip, directly on the
> chip being soldered on the main board.
>
> Facing to a lot of failures (unknown chip), I decided than to work on
> de-soldered chips.
>
> This allowed me to extract some dumps on failing and fresh purchased
> SPIs.
>
> Now, I have a satisfying database of complete images of BIOS, that I
> expect to use for programming new chips according each need.
>
> At that point begin my problem :
>
> After a abort during the first trial, I decided to erase my chip, and
> got the following advise :
>
> _"C:\Flashrom>flashrom -E -p buspirate_spi:dev=/COM3,spispeed=1M_
> _flashrom v0.9.6.1-r1704 on Windows 6.1 (x86)_
> _flashrom is free software, get the source code at
> http://www.flashrom.org [1]_
>
> _Calibrating delay loop... OK._
> _Found Winbond flash chip "W25Q32.V" (4096 kB, SPI) on buspirate_spi._
> _Erasing and writing flash chip... FAILED at 0x00000800! Expected=0xff,
> Found=0x00, failed byte count from 0x00000000-0x00000fff: 0x600_
> _ERASE FAILED!_
> _Reading current flash chip contents..."_
>
> Than I decided to purchase a DIP to SOIC adaptor in order to eliminate
> my doubts on the connection by gripper. Now the chips I use are soldered
> ...
>
> I tried to write again the BIOS image and got the following after a very
> long time of writing operation (more than one hour) and using the
> following command :
>
> _"flashrom -w flash.bin -VVV -p buspirate_spi:dev=/COM3,spispeed=1M"_
>
> The reslult is :
>
> _"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!_
> _buspirate_sendrecv: write 1, read 0 Sending 0x00_
> _buspirate_sendrecv: write 0, read 4 , receiving 0x42 0x42 0x49 0x4f_
> _buspirate_sendrecv: write 0, read 1 , receiving 0x31_
> _Raw bitbang mode version 1_
> _buspirate_sendrecv: write 1, read 0 Sending 0x0f_
> _Bus Pirate shutdown completed."_
>
> Considering than I took every possible care on the connection between
> Buspirate and SPI, and having a satisfying reading result (dumps are
> checked with Hex Editor and look OK), I am stucked at that point...
>
> I would appreciate any support from you.
>
Hi,
you should have come here earlier probably :)
Regarding your initial problems there are some hints at
http://flashrom.org/ISP
The failed erases and probably also the cause of the unknown state at
the end comes from unconnected an !WP and/or !HOLD pin.
See http://flashrom.org/Bus_Pirate for more details on these
connections.
If that does not help please post the write.log file generated by:
flashrom -w flash.bin -p buspirate_spi:dev=/COM3,spispeed=1M -o write.log
--
Kind regards/Mit freundlichen Grüßen, Stefan Tauner
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