I.MX RT1060EVA OTA mcuboot example: faulty image

[xuteng0]

I'm running the evkmimxrt1060_ota_mcuboot_client_enet example with the default SBL from the evkmimxrt1060_mcuboot_opensource example on the EVA board using MCUXpresso version 11.10.0. I followed the readme files for both examples but encountered an issue where the bootloader treated the signed binary as faulty.

The serial log shows the following:

hello sbl.
Disabling flash remapping function
Bootloader Version 1.10.0
Primary slot: version=1.0.0+0
Image 0 Secondary slot: Image not found
Erasing faulty image in the primary slot.

after further investigation, I found in the "boot_select_or_erase" function

    if (active_swap_state->magic != BOOT_MAGIC_GOOD ||
        (active_swap_state->copy_done == BOOT_FLAG_SET &&
         active_swap_state->image_ok  != BOOT_FLAG_SET)) {
        //print status
        BOOT_LOG_INF("magic: 0x%lx, copy_done: 0x%lx, image_ok: 0x%lx",
                     (unsigned long)active_swap_state->magic,
                     (unsigned long)active_swap_state->copy_done,
                     (unsigned long)active_swap_state->image_ok);
        /*
         * A reboot happened without the image being confirmed at
         * runtime or its trailer is corrupted/invalid. Erase the image
         * to prevent it from being selected again on the next reboot.
         */
        BOOT_LOG_DBG("Erasing faulty image in the %s slot.",
                     (active_slot == BOOT_PRIMARY_SLOT) ? "primary" : "secondary");
        rc = flash_area_erase(fap, 0, flash_area_get_size(fap));
        assert(rc == 0);

        flash_area_close(fap);
        rc = -1;
    }

"state" was read to

magic: 0x3, copy_done: 0x3, image_ok: 0x3

I'm using the imgtool and the private key provided with the SDK. Here's my script for signing the binary:

python3 ../sign_tool/imgtool.py sign \
    --key ../sign_tool/sign-rsa2048-priv.pem \
    --align 4 \
    --header-size 0x0400 \
    --pad-header \
    --slot-size 0x200000 \
    --max-sectors 800 \
    --version "1.0" \
    binaries/evkmimxrt1060_ota_mcuboot_client_enet.bin \
    binaries/app_binary_SIGNED.bin

Any idea what might be going wrong?

[gusarambula]

Hello Xuteng,

Are you still having trouble running the evkmimxrt1060_ota_mcuboot_client_enet and evkmimxrt1060_mcuboot_opensource examples? Do the examples run correctly with the default configuration from respective readme documents?

Regards,
Gustavo

[xuteng0]

Hi,

Yes, I am still encountering issues. The two examples are built without any modifications. Interestingly, I can build and debug the evkmimxrt1060_ota_mcuboot_client_example at address 0x60000000 without the bootloader. However, I am still unable to use the bootloader to load the app.

[diego_charles]

Hi @xuteng0 

My apologies for the delayed response, due to internal backlog. 

How are you flashing both SBL and target image?

Have you tried writting both using MCUXPresso secure provisioning tool ?

I just want to be sure that you where not losing any header or information from the target image.

Best regards, 

Diego