Does FreeRTOS support ARMv8.2 processor

Kernel
1

Does FreeRTOS support ARMv8 Cortex-A processor(e.g. Cortex-A53) and ARMv8.2 Cortex-A processor (e.g. Cortex-A55, Cortex-A7x)?

In addition, can you let me know if FreeRTOS support ARMv7 Cortex-A processors?

2

There is a Cortex-A53 port documented here: https://www.freertos.org/RTOS-Xilinx-UltraScale_MPSoC_64-bit.html

There is a Cortex-A9 port documented here: https://www.freertos.org/RTOS-Xilinx-Zynq.html (there are others too, including for chips from Renesas and Atmel).

Note these ports do not use the MMU, so use a flat address space only.

3

Hi,

Do you know if the A53 Port code is also usable with the A55 processor or does the A53 port code require additional changes to work with A55?

Thanks.

4

As far as I know the 55 version is an upgrade to the 53, so the port should work, but I’ve not studied this. What are the differences between the two cores?

1 Like
5

Yea, it is just an upgrade to a53. It has up to 8 cores instead of 4 and has L3 Cache support. Other than that, I don’t think much is different. From my testing so far, I believe it does work.

6

Thank you for sharing your findings!

1 Like