On 12/30/18 4:22 AM, Kumonie Williams wrote: > Hello,
Hi Kumonie, > Upon further inspection, I cannot find any reference to the SERVICE_MODE > jumper on Dell's website, only the two you mentioned, RTCRST and PSWD. > It appears it may only be present on the mid tower form factor model of > the Dell OptiPlex 7010, on which, it is directly under the PCI-e x16 > (wired as x4) slot, to the left of INT_USB. A photo with the jumper > circled in yellow has been made available for clarity > here: https://imgur.com/a/Bn0yuin My board definitely looks different in area of SPI flashes. It seems like Dell OptiPlex 7010 had various little bit different designs - service mode jumper [1] and different PCB layout around SPI flashes [2]. There is seem to be different revisions of this mainboard. > I heard from a post on a public forum > (https://www.bios-mods.com/forum/Thread-PSA-Dell-Service-Mode-jumper-on-Optiplex-machines) > that the service mode jumper would allow you to use an "auxiliary BIOS" > in case the "BIOS flash" (assumed they meant the chip with the firmware > on it) was damaged, however, after Jeremy's comment on the matter, I > believe either that post was incorrect, or the "auxiliary" BIOS is on a > different region of the same chip. It looks like much better explanation is on win-raid forum [3], but thread is pretty long and I didn't digest all information there. I'm still looks for advise how this SPI was flashed, I suspect internal programmer since both paths on gerrit have 12MB and SPI1_1 has just 4MB. Also it looks like doesn't contain full BIOS but just part of it. For those interested in helping binary from SPI1_1 [4]. [1] https://www.instagram.com/p/BsA6eeQFfaw/?utm_source=ig_web_button_share_sheet [2] https://www.instagram.com/p/BsA7zX3FxzT/?utm_source=ig_web_button_share_sheet [3] https://www.win-raid.com/t1053f39-Optiplex-and-VPro-AMT-ME.html#msg18356 [4] https://cloud.3mdeb.com/index.php/s/XxyRfeKRxWNTJ7P Best Regards, -- Piotr Król Embedded Systems Consultant https://3mdeb.com | @3mdeb_com _______________________________________________ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
