Bootloader upgrade

RE: Bootloader upgrade

Vidar Berg — Mon, 20 Nov 2023 10:07:12 GMT

Hi,

You can check the reset vector address to determine which slot the image belongs to as we do in the bootloader here: https://github.com/nrfconnect/sdk-mcuboot/blob/adab597a0eb0eb9c030a7b797748a49ca89988c2/boot/bootutil/src/loader.c#L976

RE: Bootloader upgrade

Mithilesh Yadav — Mon, 20 Nov 2023 09:54:05 GMT

Hi Vidar,

We have changed the bootloader update process, Now we will send all binaries(application+MCUBOOT S0+ S1), device will parse and choose the right one.

I have a question, Can I obtain the binary details i.e. binary types (application or bootloader) and bootloader binary for dedicated slot i.e. S0 or S1 before writing it into flash.

RE: Bootloader upgrade

Vidar Berg — Fri, 17 Nov 2023 06:22:02 GMT

They are both of the same bootloader, but the binaries will be different because one is linked to start at the S0 address, and the other at the S1 address.

RE: Bootloader upgrade

Mithilesh Yadav — Fri, 17 Nov 2023 05:12:53 GMT

I've analyzed binaries of S0 and S1, identifying numerous differences, could you please guide me to the specific file or structure in which I can find what difference data fills in both binaries.

RE: Bootloader upgrade

Vidar Berg — Thu, 16 Nov 2023 14:28:34 GMT

Hi,

Unfortunately, we do not currently have a solution for this requirement. To make this possible, it will be necessary to modify the immutable bootloader to swap the image from s1 to s0 before booting the updated MCUBoot image. It is important to design the swapping mechanism carefully to ensure it is robust against unexpected resets.

Best regards,

Vidar