Hi Yaron, please read about the In-System Programming. It could be that the peripheral devices of your motherboard are consuming some percentage of the power that was aimed to power a BIOS chip during the access - because of that, there is not enough power for a BIOS chip and your attempts are failing. What to do:
I) You could try to reduce the amount of peripheral devices - e.g. disconnect the RAM modules from your system and try again II) Also you can try to power a BIOS chip by the motherboard : 1) disconnect a VCC wire from your programmer, also disconnect WP and HOLD just in case 2) disconnect all the boot devices from your motherboard 3) connect a clip to a BIOS chip 4) connect a power adapter to your motherboard and turn it on 5) just in case, wait 5 minutes so that all the initialization processes will be completed 6) read the contains of a BIOS chip a few times 7) compare the checksums of read files, if they are the same - erase the BIOS chip (by filling it with FF's), turn off the motherboard, then turn it on again, wait 5 minutes - then flash your desired binary image to this BIOS chip III) Alternatively you may want to de-solder a BIOS chip from motherboard and connect it to your programmer with DIP adapter, but probably could be avoided if you do I) or II) successfully IV) Try a different programmer, e.g. CH341A which is super cheap simple hardware fully supported by flashrom - should be reliable I wish you good luck, sadly Supermicro X10DRT-Lis not supported by coreboot open source BIOS - hopefully you will be able to get a better hardware one day... Best regards, 2017-11-21 17:57 GMT+03:00 Yaron Shragai <yshragai.firmw...@gmail.com>: > Hello, > I am trying to use flashrom to program a Winbond W25Q128FV chip, on a > Supermicro X10DRT-L mobo, with a Dediprog SF 100. > > I am running flashrom from an Ubuntu VM on a Win10 laptop as well as from a > Minnowboard Max system running Ubuntu. > I am running flashrom v0.9.9-rc1-r1942, installed via apt. > I am connecting to the chip via a SOIC clip. > > I should note that I have looked at the product support data on the flashrom > web site. It lists full support for the W25Q128FV. It does not list the > X10DRT-L mobo. > > flashrom almost never "sees" the flash chip (output: "No EEPROM/flash device > found."). > > I say "almost", b/c it did see it a couple of times (out of, I would say, > ~100 tries) - which was enough for me to read out the pre-existing content, > and write to it an image that has effectively bricked it. :-) So, now I'm > trying to flash the pre-existing content back... (There is no documented > way to force the X10DRT-L to use the recovery block, and I have yet to find > an undocumented way...) > > I have tried with the system board plugged in and unplugged, and with and > without connecting the VCC pin to the programmer. > > I have been using these two command lines, at various times: > flashrom -p dediprog > flashrom -p dediprog:voltage=3.5 > > When I add -VVV, the following relevant lines appear in the output: > > Probing for Winbond W25Q128.V, 16384 kB: programmer_map_flash_region: > mapping W25Q128.V from 0x00000000ff000000 to 0x0000000000000000 > dediprog_spi_send_command, writecnt=1, readcnt=3 > RDID returned 0xff 0xff 0xff. RDID byte 0 parity violation. > probe_spi_rdid_generic: id1 0xff, id2 0xffff > programmer_unmap_flash_region: unmapped 0x0000000000000000 > > ...and further down... > > Probing for Winbond unknown Winbond (ex Nexcom) SPI chip, 0 kB: > dediprog_spi_send_command, writecnt=1, readcnt=3 > RDID returned 0xff 0xff 0xff. RDID byte 0 parity violation. > probe_spi_rdid_generic: id1 0xff, id2 0xffff > > One more datapoint: When I connect my laptop -> Dediprog -> to the flash > chip on the Minnowboard Max (Micron 25Q064A), it does recognize the chip. > > Any advice would be appreciated! > > Thanks, > Yaron > > _______________________________________________ > flashrom mailing list > flashrom@flashrom.org > https://mail.coreboot.org/mailman/listinfo/flashrom _______________________________________________ flashrom mailing list flashrom@flashrom.org https://mail.coreboot.org/mailman/listinfo/flashrom
