i.MX Processors中的主题 FreeRTOS .text area in IMX7D-M4 TCM memory

FreeRTOS .text area in IMX7D-M4 TCM memory

andreas_vorderl — Mon, 10 Sep 2018 07:35:03 GMT

Hi,

I have searched a lot but I did not find a good answer if it is possible to store code of FreeRTOS on the Cortex-M4 internal memory TCM_L and TCM_H together.

So my question is, is it possible to store code on both memory areas without splitting them in the tcm.ld memory definition file? Can I use them as one memory area? In FreeRTOS I can define a .text area which is mapped to a defined memory area of the tcm.ld file.
Does this cause failures if instructions are stored over the area of TCM_L and TCM_H?

Thanks in advance for your reply.

Re: FreeRTOS .text area in IMX7D-M4 TCM memory

danielchen — Wed, 12 Sep 2018 02:35:24 GMT

Hi Andreas:

TCM_L is on Code Bus, to Flash and to Code SRAM

TCM_H is on System Bus, to stack SRAM and to Periperals.

I think it is not good to store FreeRTOS code on both memory areas.

Regards

Daniel

Re: FreeRTOS .text area in IMX7D-M4 TCM memory

andreas_vorderl — Wed, 12 Sep 2018 05:43:32 GMT

Hi Daniel,

thanks for the quick response.

Do you mean it is not a good idea to store them on both memory maps because of unpredictable processor behaviour?
Or do you have other Concerns?

Best Regards,

Andreas