By default, the bootloader is not included in any SWU package.
To include the bootloader artifacts in the update package so they are programmed during installation, set the SWUPDATE_UBOOTIMG variable in your project’s conf/local.conf configuration file to true:
SWUPDATE_UBOOTIMG = "true"By default Digi Embedded Yocto will pack the bootloader of the default variant of the ConnectCore 93 in the SWU image.
To update a SOM with different SoC revision or RAM memory, specify the correct bootloader file on your project’s conf/local.conf as follows:
SWUPDATE_UBOOT_NAME = "<bootloader-filename>"| Updating the bootloader is a critical operation. Make sure the bootloader has been verified to boot properly before using an SWU package to update it, especially if doing a remote update. |
Update redundant bootloader partition
The ConnectCore 93 supports bootloader redundancy.
You can use an SWU package to update the redundant bootloader partition.
To enable this feature, set the SWUPDATE_UBOOTIMG_REDUNDANT variable in your project’s conf/local.conf configuration file to true:
SWUPDATE_UBOOTIMG_REDUNDANT = "true"|
The same bootloader artifacts are used to update the main and the redundant bootloader partitions. This option only takes effect if the |
