How to prevent boot info being sent out over UART on initial start up

RE: How to prevent boot info being sent out over UART on initial start up

runsiv — Thu, 01 Jun 2023 07:48:47 GMT

We need to turn of logging from the bootloader also. To do that do the following:

If you select

And then in go into your project view in VScode, into the child_image folder and create a file named for example mcuboot.conf

and add the following line:

CONFIG_LOG=n

And then do a prestine build, we should not see any logs.

You can also verify this by checking the out .config file in the output for mcuboot

Regards

Runar

Mike Austin (LPI) — Thu, 01 Jun 2023 07:34:45 GMT

Just remembered that I have a child image (running mcuboot) but I've just added:

CONFIG_LOG=n

CONFIG_BOOT_BANNER=n

to my mcuboot.proj and that's now preventing the boot banner from being sent out over UART

Regards,

Mike

Mike Austin (LPI) — Thu, 01 Jun 2023 07:09:24 GMT

I've got it set up as follows:

# Logging

CONFIG_LOG=n

CONFIG_BOOT_BANNER=n

runsiv — Thu, 01 Jun 2023 06:34:02 GMT

Hi,

That is correct.

What is your log level set to?

Regards

Runar

Mike Austin (LPI) — Thu, 01 Jun 2023 06:23:59 GMT

Hi Runar,

Do I stick that in my prj.conf file? I did try that, and its still printing out the boot info via the UART

Regards,

Mike

runsiv — Thu, 01 Jun 2023 05:48:59 GMT

Hi,

You can use the Kconfig symbol CONFIG_BOOT_BANNER to =n to remove the Zephyr boot message from the startup.

Regards

Runar