Error build compilation MPSL Enable with MCU_Boot or Secure BOOT

[Julien]

Hi,

I start a new project with nRF Connect SDK (i was using nRF5 SDK since 5 years).

For my device we are using a custom nrf52833 board with a fem skyworks66408, so i create my custom board and add an overlay to manage fem.

The fem is working with my board.

Then i wanted to add a bootloader on my device (MCU or Secure bootloader).

But when i add it i have compilation error (see file below)

Fullscreen error_build.txt Download

FAILED: zephyr/zephyr_pre0.elf zephyr/zephyr_pre0.map 
c:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: modules/nrf/lib/multithreading_lock/lib..__nrf__lib__multithreading_lock.a(multithreading_lock.c.obj): in function `k_mutex_lock':
C:\Users\julf1\Bureau\Workspace\KFIR-3004\Repeteur\project\project_nrf52833\build\b0\zephyr\include\generated\syscalls\kernel.h:946: undefined reference to `z_impl_k_mutex_lock'
c:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: modules/nrf/lib/multithreading_lock/lib..__nrf__lib__multithreading_lock.a(multithreading_lock.c.obj): in function `k_mutex_unlock':
C:\Users\julf1\Bureau\Workspace\KFIR-3004\Repeteur\project\project_nrf52833\build\b0\zephyr\include\generated\syscalls\kernel.h:962: undefined reference to `z_impl_k_mutex_unlock'
c:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: modules/nrf/subsys/mpsl/init/lib..__nrf__subsys__mpsl__init.a(mpsl_init.c.obj): in function `mpsl_low_prio_irq_handler':
C:\ncs\v2.4.1\nrf\subsys\mpsl\init\mpsl_init.c:61: undefined reference to `k_work_submit_to_queue'
c:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: modules/nrf/subsys/mpsl/init/lib..__nrf__subsys__mpsl__init.a(mpsl_init.c.obj): in function `mpsl_low_prio_init':
C:\ncs\v2.4.1\nrf\subsys\mpsl\init\mpsl_init.c:280: undefined reference to `k_work_queue_start'
c:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: C:\ncs\v2.4.1\nrf\subsys\mpsl\init\mpsl_init.c:284: undefined reference to `k_work_init'
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
[212/233] Linking C static library modules\hal_nordic\nrfx\libmodules__hal_nordic__nrfx.a
FAILED: modules/nrf/samples/b0_subimage-prefix/src/b0_subimage-stamp/b0_subimage-build b0/zephyr/zephyr.hex b0/zephyr/zephyr.elf 
[214/233] Linking C executable zephyr\zephyr_pre0.elf

If i disable bootloader my build succeed.

In the same time if I keep bootloader enable but i disable CONFIG_MPSL my build succeed too.

Are I missing something ? Like a configuration parameter for bootloader ?

Thanks in advance,

Regards,

Julien

[Sigurd Hellesvik]

Hi,

But when i add it

How do you add MCUboot? MCUboot is the default, so I recommend using that instead of Nordic Secure Immutable Bootloader (NSIB).

but i disable CONFIG_MPSL

Where have you set CONFIG_MPSL?

I suspect that you have set CONFIG_MPSL for your board files, and then the bootloader will inherit this configuration.
Instead, set CONFIG_MPSL as an application configuration.

Regards,
Sigurd Hellesvik

[Julien]

Hi

To configure I add CONFIG_BOOTLOADER_MCUBOOT=y

I tried with CONFIG_SECURE_BOOT but still the same issue.

I create child_image/mcuboot.conf and add the line CONFIG_MULTITHREADING=y.

So now the build is successful but I have the message

warning: MPSL_FEM (defined at C:/ncs/v2.4.1/nrf\subsys\mpsl\fem/Kconfig:37) was assigned the value
'y' but got the value 'n'. Check these unsatisfied dependencies: MPSL_FEM_ANY_SUPPORT (=n). See
docs.zephyrproject.org/.../kconfig.html and/or look up MPSL_FEM in the
menuconfig/guiconfig interface. The Application Development Primer, Setting Configuration Values,
and Kconfig - Tips and Best Practices sections of the manual might be helpful.

How to configure MPSL only as an appliation configuration?

Regards,

Julien

[Julien]

To complete,

Indeed my CONFIG_MPSL was set in board config. If i add it on prj.conf it's successful.

And no more warning message.

Regards,

Julien

[Sigurd Hellesvik]

Nice!

As MCUboot is a bootloader, you want it to be as small as possible and have as little complexity as possible. Therefore I suggest that you move all configurations needed only for the application to prj.conf.

The board file then only has configurations which is relevant for the whole board.
Alternativley, you can disable configurations inside child_image/mcuboot.conf, or use a little bit of both of these.