Changing the partition table on the Connectcore 6UL using Digi Embeddded Yocto Version 3.2.

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1

I am trying to Change the partition table on the Connectcore 6UL using Digi Embeddded Yocto Version 3.2.

I am following the run-time procedure described at this link:
https://www.digi.com/resources/documentation/digidocs/embedded/dey/3.2/cc6ul/yocto_t_change-partition-table_nand

I am able to edit the mtdparts and save my changes (increase the size of rootfs).

I then nand erase.part rootfs and nand erase.part update because one changes size and I assume the other moves.

When I reboot I get a Kernel Panic.

I then noticed a discussion below “Adjust Digi Embedded Yocto for partition table changes”. It discusses updating MKUBIFS_ARGS for rootfs.

I cannot find these MKUBIFS variables. I have searched the web and cannot find much info on this variable.

My questions are:

  1. Where is this variable located?
  2. Can it be changed in UBOOT?
  3. Is there a document that describes how to do this?

Thanks

2

I have an update on my issue. I have solved my Kernel Panic by updating the rootfs image after I perform the nand erase.

// Update the rootfs image from SD card
update rootfs mmc 0 dey-image-qt-x11-ccimx6ulsbc.ubifs

I no longer get a Kernel Panic. I have increased my rootfs partition from 512m to 900m.

I still want to get info about MKUBIFS_ARGS because I think it should be updated for this size increase.

Thanks.

3

After you have erased the partitions you have to reprogram them.

MKUBIFS_ARGS I believe is the variable in core/Makefile
Please take a look here: https://www.engicam.com/art/193888/NAND-programming

But I don’t think you need to do anything about it.

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