Conditioanl compilation.

[shlomots]

I am using mcuboot with the child image functionality.
my app should work for nrf52840dk and nrf5340dk.
I want to set up the configurations so that for each board, the right configurations would be chosen.
For the main image, I know this is pretty simple, I can just add the specific board configurations I want for nrf5340dk to nrf5340dk_nrf5340_cpuapp.conf for example.

How do I do the equivalent for the child image? 

I need to add:

CONFIG_BOOT_IMAGE_ACCESS_HOOK_NRF5340=y

CONFIG_BOOT_IMAGE_ACCESS_HOOKS=y

CONFIG_NRF53_MULTI_IMAGE_UPDATE=y

CONFIG_UPDATEABLE_IMAGE_NUMBER=2

CONFIG_PCD_APP=y

to the mcuboot child image on lt when it is flashed to the nrf5340dk.

thanks in advance, 
shlomo

[Kazi Afroza Sultana]

Hello Sholomo,

Setting separate configurations for the specific board (for the child image in a multi-board project), you have to use child_image/mcuboot/boards directory in the project. For each board, 

 

• child_image/mcuboot/boards/nrf5340dk_nrf5340_cpuapp.conf (for nrf5340dk)
• child_image/mcuboot/boards/nrf52840dk_nrf52840.conf (for nrf52840dk)

For example, in your case you can place the configuration files in child_image/mcuboot/boards/nrf5340dk_nrf5340_cpuapp.conf file

CONFIG_BOOT_IMAGE_ACCESS_HOOK_NRF5340=y
CONFIG_BOOT_IMAGE_ACCESS_HOOKS=y

CONFIG_NRF53_MULTI_IMAGE_UPDATE=y
CONFIG_UPDATEABLE_IMAGE_NUMBER=2
CONFIG_PCD_APP=y

There is a previous case (+) Support for separate mcuboot configurations for nrf52840 and nrf5340 - Nordic Q&A - Nordic DevZone - Nordic DevZone, you can look at.

Thanks.

BR

Kazi

[shlomots]

thanks, few followups,
1. I actually found out I can do that few moments ago, but the problem is once I create this mcuboot folder, it doesn't take the base prj.conf of the mcuboot imagae, forcing me to write one myself and putting it inside the mcuboot folder. If I create this folder, it means I have to override the entire prj.conf?
2. I am also trying to take diffrent pm_static files for each board. I am trying to use the pm_static_<board name>.yaml convetntion but for some reason the build system doesnt pick it up, why is that?
I am using ncs 2.7.0.