Before I accidentally brick my device, I wanted to verify if this syntax was going to do what I think its going to do.
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fuse prog 0 14 0x00000100
This sets the FORCE_BOOT_FROM_FUSE bit to force the device to boot from BT_MODE_FUSES
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fuse prog 0 18 0x00000002
Sets the BT_MODE_FUSES to boot from eMMC.
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When I fuse those 2 bits, it should disable recovery mode and only boot from eMMC. It would be nice to test it out with fuse override, but since I need to reboot the device, it would wipe it out anyways.
This was from the MASSIVE 10000 page PDF.
fuse prog 0 18 0x00000042
Looks like this is the better answer just this one. It also will set the BT_FUSE_SEL so it basically does the same as the other.
But this is for imx8 and not imx8qm , so these are the wrong fuse maps.
No, I got the correct mappings and still having the same issue.
Just to summarize could you list all the fuses/values you’re trying to set? In production we set some fuses already so it may be possible that you’re trying to set fuses that are already set.
Best Regards,
Jeremias
Hi @mmoles Please see respond from or R&D team below -
"Our current boot process is that we set in hardware with strapping resistors to boot from fuses and with a switcher we change that strapping to go into recovery-mode.
So we really tell in fuse 18 to boot from eMMC - that’s why it’s already fused.
If one wants to disable recovery mode you could try the FORCE_BOOT_FROM_FUSE fuse on bit8 in fuse 14 . I haven’t tried that, I just saw that this might be a possibility you can try.
Be also aware that U-Boot needs to be customized to a level where one can’t access it even with physical access - otherwise also this exercise is useless"
