How to program or burn internal fuses?

Discussion in 'UDOO NEO' started by Andy, Nov 30, 2016.

  1. Andy

    Andy New Member

    Nov 30, 2016
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    Hello, In this thread it was confirmed that internal fuses are not burned,, so my question is can anyone suggest me a guide or steps to how to do that? Also can I store some keys in these fuses which can unlock a secure sd card containing udoo linux?
    I am aware of the uboot bootloader compilation process described here -
    I have also read few guides specific to other devices.
    Thank you.
  2. jas-mx

    jas-mx Active Member

    Dec 31, 2013
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    uboot should already have ocotp support therefore you need to decide which fuses you want to burn and apply them to the correct bank/fields. I wouldn't suggest you attempt this unless your fully confident of the fuses you want to burn and have a few extra boards lying around in case of a mishap.

    I'm not sure what you want to achieve, however parts of the sd card can't be encrusted/secured because the imx6 internal rom expects the SD card to contain uboot at a predefined offset location. The links in your original post are about signing uboot so it can't be tampered with once deployed.
    Last edited: Dec 2, 2016

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