Changes between Version 4 and Version 5 of venice/SDP


Ignore:
Timestamp:
05/22/2026 05:04:46 PM (32 hours ago)
Author:
Ryan Erb
Comment:

add note for uuu

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  • venice/SDP

    v4 v5  
    134134Note in order to force booting from SDP you must erase the eMMC SPL code (ie 'mmc dev 2 && mmc erase 0 8000) as the default boot cfg fuses are set to boot from eMMC.
    135135
     136== Flashing with UUU
     137
     138*** NOTE: Not typically recommended, proceed with caution
     139
     140The 'uuu' embedded scripts (ie those shown with a 'uuu -bshow' command) require NXP's U-Boot to fully work (which Gateworks is not using), however you can use your own scripts.
     141
     142We store the boot firmware including U-Boot on emmc boot0 which is selected with 'mmc dev 2 1' therefore you can erase the boot firmware via:
     143{{{
     144mmc dev 2 1; mmc erase 0 5000
     145}}}
     146
     147The absence of valid boot firmware will cause the BOOT ROM to invoke SDP and you will see the device enumerate as such on the USB bus when connected to a PC via the on-board USB connector.
     148