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Hi Flashrom,
I have a Winbond W25Q16 that i can read and write ok on raspberry pi 2b
I've now tried the same process using a pi-400 and since now flashrom returns with unusual response(s) - writing and reading seems to work though..? (identical contents on rewrite) - btw : i am using WiringPi sysfs from bash to control the spi pins using a std 'bus pirate' ribbon to header cable
here the flashrom response...
Programming the SPI-Flash...
flashrom unknown on Linux 6.6.51+rpt-rpi-v8 (aarch64) flashrom is free software, get the source code at https://flashrom.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns). === SFDP has autodetected a flash chip which is not natively supported by flashrom yet. All standard operations (read, verify, erase and write) should work, but to support all possible features we need to add them manually. You can help us by mailing us the output of the following command to flashrom@flashrom.org: 'flashrom -VV [plus the -p/--programmer parameter]' Thanks for your help! === Found Unknown flash chip "SFDP-capable chip" (2048 kB, SPI) on linux_spi. === This flash part has status UNTESTED for operations: WP The test status of this chip may have been updated in the latest development version of flashrom. If you are running the latest development version, please email a report to flashrom@flashrom.org if any of the above operations work correctly for you with this flash chip. Please include the flashrom log file for all operations you tested (see the man page for details), and mention which mainboard or programmer you tested in the subject line. Thanks for your help! Reading old flash chip contents... done. Erasing and writing flash chip... Warning: Chip content is identical to the requested image. Erase/write done.
Programming the SPI-Flash done.
i tried 1/4 speed but no change
then i performed (as suggested)
flashrom -VV --programmer dummy
- please see the attached file - and advise...
Best Regards & Wishes
frans
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