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Reset BIOS defaults on Turbot Dual Ethernet #137

Open graspomatic opened 5 years ago

graspomatic commented 5 years ago

In the course of trying to debug a USB issue, I disabled XHCI and this has caused me to be unable to use any USB device. Now I can't boot into the BIOS and re-enable XHCI because the keyboard doesn't work.

I thought I could reset the BIOS by removing the onboard battery, but after removing it for 10 minutes the problem persists. How can I reset the BIOS without USB support?

naikrovek commented 5 years ago

You will need to re-flash the BIOS via the pins on the board. If you have a Raspberry Pi you can use that to do it from within Linux using a tool called flashrom after things are wired up.

graspomatic commented 5 years ago

Is there a guide for this somewhere? Which pins?

BTW, I do still have access to the minnowboard over ethernet using putty if that helps. Not sure if there's anything to be done from the Linux (Yocto) command line.

naikrovek commented 5 years ago

https://3mdeb.com/firmware/flashing-minnowboard-turbot-with-raspberry-pi-zero-w/

There might be a way to change UEFI settings from within Linux on the Minnowboard Turbot, and if there is, I don't know how to do it.

BrianRichardsonIntel commented 5 years ago

https://firmware.intel.com/sites/default/files/Flashing_MinnowBoard_MAX_with_Dediprog_SF100_in_Linux.pdf

https://firmware.intel.com/sites/default/files/Flashing_MinnowBoard_MAX_with_Dediprog_SF100_in-Windows.pdf

graspomatic commented 5 years ago

For future reference, I managed to solve the issue without needing to reflash the UEFI. You just need to short jumper J7, then hit the delete key repeatedly on boot.

http://uchan.hateblo.jp/entry/2018/01/09/075230

alexanderbeloiu commented 4 years ago

hello i am having a similar problem, can someone help?

alexanderbeloiu commented 4 years ago

nvm