topic Re: Memory mapping for dual core application in i.MX RT Crossover MCUs

Memory mapping for dual core application

techexplorer_139 — Fri, 12 Dec 2025 06:44:01 GMT

Hi,

I am using imxRT-1176 EVKB and working dual core application. CM 7 is my primary core and CM4 is my secondary (slave) core. In my application CM7 and CM4 will have same code with shared memory. CM7 code is working fine but as i use the same code in CM4 the memory overflows. Help me in memory management so both core can work properly.

CM7 Memory mapping:

CM7 build usage:

CM4 memory mapping:

CM4 build usage:

Re: Memory mapping for dual core application

mayliu1 — Fri, 12 Dec 2025 07:28:35 GMT

Hi @techexplorer_139 ,

Thank you so much for your interest in our products and for using our community.

1: Did you use MIMXRT1170-EVKB development board or your customed board?

2: Which SDK demo do your use.

I suggest you can refer to SDK demo "evkbmimxrt1170_hello_world_secondary_core_boot_primary_core_cm7" and "evkbmimxrt1170_hello_world_secondary_core_boot_secondary_core_cm4"

For CM7 project:

For CM4 project:

Please double check CORE1_BOOT_ADDRESS setting in " the evkbmimxrt1170_hello_world_secondary_core_boot_primary_core_cm7"

Wish it helps you.
If you still have question about it, please kindly let me know.

Best Regards
MayLiu

Re: Memory mapping for dual core application

techexplorer_139 — Fri, 12 Dec 2025 08:24:42 GMT

I used MIMXRT1170-EVKB development board
SDK example: evkbmimxrt1170_rpmsg_lite_pingpong_rtos

Re: Memory mapping for dual core application

techexplorer_139 — Fri, 12 Dec 2025 08:48:14 GMT

I am using MIMXRT1170-EVKB development board
SDK example: evkbmimxrt1170_rpmsg_lite_pingpong_rtos

Re: Memory mapping for dual core application

techexplorer_139 — Tue, 16 Dec 2025 09:21:56 GMT

@mayliu1 I am using evkbmimxrt1170_rpmsg_lite_pingpong_rtos example and i am using MIMXRT1170-EVKB development board

Re: Memory mapping for dual core application

mayliu1 — Thu, 18 Dec 2025 02:00:12 GMT

Please refer to the SDK demo in my previous post.

Re: Memory mapping for dual core application

techexplorer_139 — Thu, 18 Dec 2025 09:36:42 GMT

@mayliu1 I need more space to store my source code which is approx 4MB. and if i change the memory addresses and MCU linker then it doesnt work properly.