Using MCUBOOT_DATA_SHARING with multiple images prevents jumping into application

[pbesson-invn]

Hello,

I want to use MCUBOOT_DATA_SHARING feature with nrf5340 which uses multiple images (NET+APP).

But doing so prevents booting to application because boot_add_shared_data() in boot/bootutil/src/loader.c is called twice from context_boot_go() when looping images. Indeed, with nrf5340, MCUBOOT_IMAGE_NUMBER is set to 2.

Second time boot_add_shared_data() is called, it returns SHARED_MEMORY_OVERWRITE which causes context_boot_go() to return an error and abort the boot process.

Anyway to workaround that ?

Thank you.

mcuboot version: daf2946a0f07

Same issue mentioned on Nordic DevZone: https://devzone.nordicsemi.com/f/nordic-q-a/115960/problem-with-data-sharing/509304

[nordicjm]

Doesn't really make sense because boot_save_shared_data() has this:

    if (saved_bootinfo) {
        /* Boot info has already been saved, nothing to do */
        return 0;
    }
...
    if (!rc) {
        saved_bootinfo = true;
    }

    return rc;

So if the first image update was OK then the second would be skipped

[pbesson-invn]

Code you are referring to is not present in mcbuoot/nrf version I am using. It looks like you have added it recently: bcffc62

So I guess this issue can be closed.

Sorry for the trouble.

[nordicjm]

Use main of ncs and it should be fixed there