AnsweredAssumed Answered

HAB 'close' on iMX6UL

Question asked by colinhelliwell on Apr 16, 2018
Latest reply on Apr 16, 2018 by Yuri Muhin

I've been using an iMX6S on my platform, and have successfully created a signed U-Boot, blown the HAB fuses, and 'closed' the device. But when I perform the same fuse steps on an iMX6UL, I'm unable to close the device. The security fuses themselves (bank 3, word 0-7) read back ok and there are no HAB Events, but when I do 'fuse prog –y 0 6 0x00000002' (to close the device), U-Boot is throwing a 'usage' error. 

(NB - I've also first attempted to disable the JTAG with 'fuse prog –y 0 6 0x00100000')

 

Is the 'close' fuse in a different place on the UL?

 

Thanks.

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