SWUpdate on RPi4 via yocto - error parsing configuration file

Question

After booting SWUpdate yocto-generated image for the first time, executing swupdate results in error message:

Error parsing configuration file: 'globals' section missing, exiting.

I tried to strictly follow SWUpdate's documentation, but it gets short when it comes to yocto integration. I'm using meta-swupdate, meta-swupdate-boards, and meta-openembedded layers together with poky example repository all at Kirkstone tag, building via bitbake update-image and having modyfied local.conf as:

MACHINE ??= "raspberrypi4-64"
ENABLE_UART = "1"
RPI_USE_U_BOOT = "1"
IMAGE_FSTYPES = "wic ext4.gz"
PREFERRED_PROVIDER_u-boot-fw-utils = "libubootenv"

IMAGE_INSTALL:append = " swupdate"

Is there anything else I need to modify to generate the configuration file and be able to run SWUpdate binary properly?

Side question: In the documentation, it's recommended to append swupdate-www to achieve a better web server. However, if I append it, there is no swupdate-www binary inside the `/usr/bin' directory.

Answer 1

As with other recipes folders the recipes-support/swupdate/swupdate/raspberrypi4-64 folder was missing inside the meta-swupdate-boards layer. Therefore, an empty config file was always generated. After adding this folder and all related files, strongly inspired by raspberrypi3 folder, the error was gone and swupdate -h provided the expected output.

There was also one new error during build process thrown by yocto. It was related to missing systemd requirement and was solved by adding:

DISTRO_FEATURES_append = " systemd"

to local.conf