OEMiROT Swap Mode with Single Image (Secure Only) – Binary Not Generated

Hi,

I am currently testing OEMiROT and I performed the following 3 tests.

Test 1: Default example

(Overwrite mode enabled + separate Secure and Non-Secure applications)
How to start with OEMiRoT on STM32U3 - stm32mcu

Project:

• OEMiROT_Appli_TrustZone
• OEMiROT_Boot

Configuration:

#define MCUBOOT_OVERWRITE_ONLY
/* Defined: FW installation uses overwrite method.
 Undefined: FW installation uses swap mode. */

#define MCUBOOT_APP_IMAGE_NUMBER 2
/* 1: S application only if FLASH_NS_PARTITION_SIZE = 0,
 otherwise S and NS binaries assembled in one single image.
 2: Two separated images for S and NS applications. */

#define MCUBOOT_S_DATA_IMAGE_NUMBER 0
#define MCUBOOT_NS_DATA_IMAGE_NUMBER 0

This test works correctly.

Test 2:

(Swap mode enabled + separate Secure and Non-Secure applications)

Project:

• OEMiROT_Appli_TrustZone
• OEMiROT_Boot

/* #define MCUBOOT_OVERWRITE_ONLY */
/* Undefined: FW installation uses swap mode. */

#define MCUBOOT_APP_IMAGE_NUMBER 2

#define MCUBOOT_S_DATA_IMAGE_NUMBER 0
#define MCUBOOT_NS_DATA_IMAGE_NUMBER 0

This test also works correctly.

Test 3:

(Swap mode enabled + Secure-only application / single image)

Project:

• OEMiROT_Appli_Secure
• OEMiROT_Boot

/* #define MCUBOOT_OVERWRITE_ONLY */
/* Undefined: FW installation uses swap mode. */

#define MCUBOOT_APP_IMAGE_NUMBER 1
/* Single image configuration */

#define MCUBOOT_S_DATA_IMAGE_NUMBER 0
#define MCUBOOT_NS_DATA_IMAGE_NUMBER 0

In this case, the binary for the OEMiROT_Appli project is not generated.

Has anyone already tested the configuration with no separation between Secure and Non-Secure applications?

Any feedback or suggestions would be appreciated.

Thank you,

Marco