How to integrate library file in a specific RAM area

WeoWang — Tue, 07 Feb 2023 07:33:36 GMT

Hi Dear Colleagues,

There is a requirement from my customer.

Their end customer gave them a library:

And required them to put the library into a specific RAM area, then, use MPU to protect this area.

How to realize this requirement?

Best Regards

Weiyou Wang

Re: How to integrate library file in a specific RAM area

stanish — Wed, 08 Feb 2023 17:53:53 GMT

Hello Weiyou,

If the library source code has been compiled with custom sections attributes, then they can easily place these sections (e.g. myLibConst) into custom memory space.

Anyway, gcc linker allows placement of any object code (.text) into a custom section. This way they could force to place library code/data/consts into a specitic memory custom sections even if the library object code was NOT compiled with specific placement for code/data/const.

see e.g.

https://community.nxp.com/t5/S32-Design-Studio-Knowledge-Base/HOWTO-Run-a-routine-from-RAM-in-S32-Design-Studio/ta-p/1113336

https://community.nxp.com/t5/S32-Design-Studio-Knowledge-Base/HOWTO-Execute-a-library-function-from-RAM-memory-using-GNU-build/ta-p/1106568

Hope it helps.

Stan

topic How to integrate library file in a specific RAM area in S32 Design Studio

How to integrate library file in a specific RAM area

Re: How to integrate library file in a specific RAM area