Build mcuboot with CONFIG_SINGLE_APPLICATION_SLOT=y is failed

[Hiihtaja]

Hello !

I use latest NCS v2.2.0 and try to occupy by application core as much as possible,

I can see at list 2 image slots are reserved and with serial recovery from host side it looks as wasted space,

I have defined in mcuboot.conf

CONFIG_SINGLE_APPLICATION_SLOT=y

But compilation failed.

Error: Invalid value for '-S' / '--slot-size': /home/yevgen/nsctest/multicore_dfu_ext/build/zephyr/net_core_app_to_sign.bin is not a valid integer. Please use code literals prefixed with 0b/0B, 0o/0O, or 0x/0X as necessary.
[196/211] Generating ../../zephyr/net_core_app_signed.hex
FAILED: zephyr/net_core_app_signed.hex

Error: Invalid value for '-S' / '--slot-size': /home/user/nsctest/multicore_dfu_ext/build/cpunet/zephyr/signed_by_b0_app.hex is not a valid integer. Please use code literals prefixed with 0b/0B, 0o/0O, or 0x/0X as necessary.
[197/211] Linking C executable zephyr/zephyr.elf

/home/user/ncs/v2.2.0/bootloader/mcuboot/boot/zephyr/single_loader.c:76:18: warning: implicit declaration of function 'boot_image_validate'; did you mean 'boot_image_validate_once'? [-Wimplicit-function-declaration]
76 | FIH_CALL(boot_image_validate, fih_rc, fa_p, hdr);
| ^~~~~~~~~~~~~~~~~~~
/home/user/ncs/v2.2.0/bootloader/mcuboot/boot/bootutil/include/bootutil/fault_injection_hardening.h:331:19: note: in definition of macro 'FIH_CALL'
331 | ret = f(__VA_ARGS__); \

Is this real error ?

Do you have some patch for fix it ?

Regards,

Eugene

[Einar Thorsrud]

Hi Eugene,

Using a single application slot with serial recovery absolutely makes sense, but unfortunately this is currently not supported together with network core DFU. The has been reported to our team working with DFU but I cannot say when it will be supported.

Einar

[Hiihtaja]

Hi Einar !

So I should just wait sometime or I'm able to see to what release it might be scheduled or you might have early patch what I can use at some point ?

How easy to setup configuration when first image slot is huge and second one is small ?

Now they split 50/50 but 90/10 is good approach as well. Own static partitions yml for whole  flash memory map is not so obvious task.

Regards,

Eugene

[Einar Thorsrud]

Hi Eugene,

Unfortunately I do not have a patch for this to share with you at this moment, but you are not the first one to request this (see for instance this thread) and the team is looking into it. I will try to update here when we have something.

[Hiihtaja]

Hi Einar !

Is any news about issue ?

Regards,

Eugene

[Einar Thorsrud]

Hi Eugene,

There is no official solution for this yet, but another customer shared a partial solution here.

Br,

Einar