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How to do Firmware upgrade(U-boot, kernel, rootfs) for Var-som-solo/dual IMX6 board

shripal_k , 05-18-2021, 02:54 AM

I want to do a firmware upgrade that includes u-boot, kernel and rootfs using a USB stick. This means on plugging the USB stick should automatically update the firmware. For kernel and rootfs I am copying the images into a temporary location and using the A/B update strategy. But I am not able to find a method to update U-Boot. I can't use a bootable sd-card for this. Is it okay if I directly erase the U-boot partition and copy the new U-boot into that partition will it cause any problem? Is it feasible to do like this? Which other modules will get affected if I erase the U-Boot while system is running.

Sorry for this long question.
Thanks in advance.
robertferanec , 05-24-2021, 01:48 AM
Maybe this may give you some ideas how uboot update could be done:
Content Get and compile the latest uBoot Run uBoot on an empty module Flash uBoot for the very first time into a fresh module Programming eFuses on very
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