How to share DDR memory between CPU0 and CPU1 using openAMP

[shantaramj]

Hello Folks,

I am running linux on cpu0 and baremetal application on cpu1 using openAMP.

I already have baremetal application which is load data from sdcard and send it to video mixer.

Now i want to sdcard is access by linux and send sdcard data to baremetal application.

so i want to share linux application data with baremetal application.

how can i do this?

My baremetal video application is:

i stored image data in sdcard then its load into DDR and send to video mixer

SDCARD(image data)---> DDR ---> video mixer----> HDMI outpt

In openAMP:

Now I want to sdcard is access by linux and flow goes to as above.

please give me any clue or example how can i share ddr.

 

platform   Zybo 7020

vivado ver. 2018.2

 

Thanks in advance

 

[Ionel]

What will manage access to your SDCARD?
Do you realy whant to share data via SDCARD?
https://github.com/OpenAMP/open-amp#example-to-compile-openamp-for-communication-between-linux-processes
Why not use shared memory?
https://www.xilinx.com/support/documentation/sw_manuals/xilinx2019_1/ug1186-zynq-openamp-gsg.pdf
https://github.com/OpenAMP/libmetal
https://github.com/OpenAMP/libmetal#shmem

[shantaramj]

thanks for reply @Ionel

 

Problem was solved by changing some modification in application.