MCUBoot private key on nrf5340dk

RE: MCUBoot private key on nrf5340dk

RHeine — Thu, 28 Apr 2022 07:19:04 GMT

Hi Øivind,

I was wrong everything work well on the nrf5340dk and on my custom board, I just forget to change the path into "mcuboot.conf".

Thank you for all your help.

Best Regards,

Rob

RE: MCUBoot private key on nrf5340dk

RHeine — Wed, 27 Apr 2022 12:54:28 GMT

Hi Øivind,

everything work well with the sample project and the nrf5340dk.

I tryed to verify that I can update a new version with device manager, it's work too.

Also, I tryed to change the private key and send a bad version from device manager, and the state was:"invalid (3)"

So it look like I need the right private key to upgrade new soft version with DFU.

After, I tryed the same thing with my custom board and my custom soft, everything work, except that I can upgrate with any private key... So I have a problem...

I will make a private ticket to understand why it do not work.

Best Regards,

Rob.

RE: MCUBoot private key on nrf5340dk

Øivind — Wed, 27 Apr 2022 10:16:56 GMT

Ah, I apologize, I saw that it was in an unusual place, but I just assumed it was allowed on the older version of the SDK.

Great job figuring it out!

So everything is working now?

RE: MCUBoot private key on nrf5340dk

RHeine — Wed, 27 Apr 2022 06:48:57 GMT

Hi Øivind,

I find the problem, now it's working.

I change the place were I have put ''mcuboot.conf", I put inside a folder called child_image and I deleate:

if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/mcuboot.conf")
    list(APPEND mcuboot_OVERLAY_CONFIG
      "${CMAKE_CURRENT_SOURCE_DIR}/mcuboot.conf"
      )
endif()

from CmakeLists.txt file.

Thanks you for your help.

Best Regards,

Rob

RE: MCUBoot private key on nrf5340dk

RHeine — Tue, 26 Apr 2022 08:02:43 GMT

Hi Øivind,

I tried to increase "BOOT_MAX_IMG_SECTORS" to 256 or 512 or 1024, I added "CONFIG_BOOT_MAX_IMG_SECTORS=1024" in mcuboot.conf file,

but I still have the same error:

*** Booting Zephyr OS build v2.6.0-rc1-ncs1 ***
Attempting to boot slot 0.
Attempting to boot from address 0x8200.
Verifying signature against key 0.
Hash: 0x2e...e0
Firmware signature verified.
Firmware version 1
*** Booting Zephyr OS build v2.6.0-rc1-ncs1 ***
I: Starting bootloader
W: Failed reading sectors; BOOT_MAX_IMG_SECTORS=1024 - too small?
E: Unable to find bootable image

How can I go further ?

RE: MCUBoot private key on nrf5340dk

RHeine — Mon, 25 Apr 2022 13:51:45 GMT

Thanks you very much for your reply.

I had CONFIG_FW_INFO=y to mcuboot.conf,

but now I have this message:

*** Booting Zephyr OS build v2.6.0-rc1-ncs1 ***
Attempting to boot slot 0.
Attempting to boot from address 0x8200.
Verifying signature against key 0.
Hash: 0x2e...e0
Firmware signature verified.
Firmware version 1
Setting monotonic counter (version: 1, slot: 0)
*** Booting Zephyr OS build v2.6.0-rc1-ncs1 ***
I: Starting bootloader
W: Failed reading sectors; BOOT_MAX_IMG_SECTORS=128 - too small?
E: Unable to find bootable image

How can I increase the BOOT_MAX_IMG_SECTORS ?

Best Regards,

Rob

RE: MCUBoot private key on nrf5340dk

Øivind — Mon, 25 Apr 2022 13:33:00 GMT

Hi,

Sorry for the late reply, it has been busy this last week.

I am able to boot the image when I add CONFIG_FW_INFO=y to mcuboot.conf.

RE: MCUBoot private key on nrf5340dk

RHeine — Fri, 22 Apr 2022 09:54:50 GMT

Hi Øivind,

Could you help me to make image bootable, please ?

Best Regards,

Rob

RE: MCUBoot private key on nrf5340dk

RHeine — Wed, 13 Apr 2022 14:19:20 GMT

Hi Øivind,

Thank you for your answer.

I tried to add to mcuboot.conf:

CONFIG_BOOT_SIGNATURE_TYPE_ECDSA_P256=y
CONFIG_PCD=y

The build work, I had this message before flashing:

D:\elect\projets_nordic_D\dfu_peripheral_uart_private_key>west flash
-- west flash: rebuilding
[0/17] Performing build step for 'mcuboot_subimage'
ninja: no work to do.
[1/11] Performing build step for 'b0_subimage'
ninja: no work to do.
[2/7] Performing build step for 'hci_rpmsg_subimage'
[0/5] Performing build step for 'b0n_subimage'
ninja: no work to do.
-- west flash: using runner nrfjprog
Using board 960132679
FATAL ERROR: The hex file contains data placed in the UICR, which needs a full erase before reprogramming. Run west flash again with --force, --erase, or --recover.

So I tried: "west flash recover"

and I had this message from the Uart:

*** Booting Zephyr OS build v2.6.0-rc1-ncs1 ***
Attempting to boot slot 0.
No fw_info struct found.
Attempting to boot slot 1.
No fw_info struct found.
No bootable image found. Aborting boot.
"

It look like I miss something to make image bootable...

Here is a zip of my project:devzone.nordicsemi.com/.../dfu_5F00_peripheral_5F00_uart_5F00_private_5F00_key.zip

Best Regards,

Rob

RE: MCUBoot private key on nrf5340dk

Øivind — Thu, 07 Apr 2022 12:37:35 GMT

Hi,

Try adding these configs to your mcuboot.conf

CONFIG_BOOT_SIGNATURE_TYPE_ECDSA_P256=y
CONFIG_PCD=y