TDA4VM: C7X: Configuring Cache on FreeRtos

Hi Shrinidhi,

In FreeRTOS, the default MMU Configuration related to setting various regions as cached/un-cached is present in the file osal/soc/<SOC>/freertos_mmu.c. This is similar to the SYSBIOS file osal/soc/<SOC>/bios_mmu.c.

For APIs to perform various Cache Operation(wb/Inv/wbInv), this is already supported by the OSAL CacheP module, which supports FreeRTOS on C7x as well. We recommend to use OSAL APIs

Regards,

Brijesh

I will try these. And get back to you thanks.

Hi Brijesh,

In freertos_mmu.c, i could see the apis to initialize mmu. But i don't see any cache related api for cache configuration.

Please help

Can you try using CacheP_wb and CacheP_inv APIs?

Hi Brijesh,

CacheP_wb and CacheP_inv are generic writeback and invalidate APIs those are fine. No issues with that.
I'm looking for cache configuration APIs. Mainly L1D cache on c7x. How to configure a custom configuration on freeRtos environment?

Hi Shrinidhi,

Can you please check appMmuMap API in ti-processor-sdk-rtos-j721e-evm-08_01_00_13\vision_apps\platform\j721e\rtos\c7x_1\main.c ?

Regards,

Brijesh

I think this might work. This was not present in 8.1. I will check this with 8.2 and get back to you.

Thanks.