topic Re: Memory Issue in i.MX 6SoloX cortex M4 in i.MX Processors

Memory Issue in i.MX 6SoloX cortex M4

nagaprasadvasam — Tue, 16 Apr 2019 11:49:26 GMT

Hi Every One,

I am Working on imx6solox sabre-sd Board,running cortex-m4 with FREERTOS and cortex-A9 with Linux. my Rtos Application for cortex-m4 exceeding 32kb memory limit for m4,can any one help me regarding how to increase code and data segment memory range for cortex-m4 and changes needed for linux addresses on cortex-A9.

Thanks & Regards,

NagaPrasad.

Re: Memory Issue in i.MX 6SoloX cortex M4

Yuri — Wed, 17 Apr 2019 02:51:05 GMT

Hello,

Please refer to Table 2-2 (CM4 memory map) of i.MX 6SoloX Reference Manual, Rev. 3, 07/2018,
regarding available for CM4 memory. Note, DRAM MMDC memory is common for CA9 and CM4.

https://www.nxp.com/webapp/Download?colCode=IMX6SXRM

Regards,

Yuri.

Re: Memory Issue in i.MX 6SoloX cortex M4

nagaprasadvasam — Wed, 17 Apr 2019 09:25:09 GMT

Hi Yuri,

Thanks for ur reply,

i tried by using memory according to table in reference manual,i have edited linker file for ddr RAM as well as qspi.but there seems to be no change,can you please suggest some solution to work with cortex-m4 with peripheral functionality as expected with modification of Ram memory region.

Re: Memory Issue in i.MX 6SoloX cortex M4

Yuri — Thu, 18 Apr 2019 03:45:57 GMT

Hello,

Do You use Linux on CA9?

How CM4 code is loaded and run?

How memory is allocated between CA9 and CM4?

Regards,

Yuri.

Re: Memory Issue in i.MX 6SoloX cortex M4

nagaprasadvasam — Mon, 22 Apr 2019 05:20:05 GMT

Hai,

Yes i am running Linux on A9 & code is running through u-boot using ddr memory.

Regards,

Prasad.

Re: Memory Issue in i.MX 6SoloX cortex M4

Yuri — Mon, 22 Apr 2019 07:02:04 GMT

Hello,

The DDR memory for CM4 should be reserved, as shown, for example in

"reserve_m4_memory.docx"

https://community.nxp.com/docs/DOC-335105

Regards,

Yuri.