topic i.MX8MP - Shared Memory for Core M7 and Core A53 in i.MX Processors

i.MX8MP - Shared Memory for Core M7 and Core A53

teleportboy — Fri, 15 Dec 2023 11:07:44 GMT

I need to allocate a memory area that can be accessed by both the Core M7 and the Core A53. This memory area is necessary for the processors to communicate with each other.

That is, from Linux, I should be able to access a certain memory area using mmap (or something similar) to read data. And from the Cortex M7, I should be able to access the same memory area to write data.

Re: i.MX8MP - Shared Memory for Core M7 and Core A53

Bio_TICFSL — Mon, 18 Dec 2023 15:16:29 GMT

Hello,

Yes This is possible, please see the current example in yocto BSP where you have the M4 and shared memory with A53 cores.

Regards

Re: i.MX8MP - Shared Memory for Core M7 and Core A53

teleportboy — Tue, 19 Dec 2023 06:30:20 GMT

Any links to materials?

Re: i.MX8MP - Shared Memory for Core M7 and Core A53

ReneB — Wed, 28 Feb 2024 10:33:48 GMT

Hello,

I do have the same need as teleportboy, which is to define a shared memory region between A53 and M7.

How is it possible ? Do someone as example to share ?

thank's