The RDC example does not work on evkmimx8mp

[zionst]

https://github.com/nxp-mcuxpresso/mcux-sdk-examples/blob/main/evkmimx8mp/driver_examples/rdc/
IMX8MP evaluation board: SCH-46370 REV B1
Affected BSP: All BSPs from NXP website with kernel lf-5.10.y and lf-5.15.y
MCUXpresso SDK version: SDK_2.13.0_EVK-MIMX8MP

Testing Procedure:
Case 1, in U-Boot:

load mmc 2:2 0x70000000 lib/firmware/rdc.bin
cp.b 70000000 0x7e0000 20000
bootaux 0x7e0000

Case 2, in Linux:

echo -n rdc.elf > /sys/class/remoteproc/remoteproc0/firmware
echo start > /sys/class/remoteproc/remoteproc0/state

Expected Output:

RDC Example:
RDC Peripheral access control
RDC Peripheral access control with SEMA42
RDC memory region access control

RDC Example Success

Actual Output (in both cases):

RDC Example:
RDC Peripheral access control

I also tried running each of the three test cases APP_RDC_Periph(), APP_RDC_PeriphWithSema42() and APP_RDC_Mem() by commenting out the other two, all failed. Even though HardFault_Handler was triggered, memDemoError equals 3 in Fault_Handler.

However, the same RDC example for IMX8MM evk works perfectly:
https://github.com/nxp-mcuxpresso/mcux-sdk-examples/tree/main/evkmimx8mm/driver_examples/rdc
IMX8MM evaluation board: SCH-31407 REV C4
Tested BSP: All BSPs from NXP website with kernel lf-5.10.y and lf-5.15.y
MCUXpresso SDK version: SDK_2.13.0_EVK-MIMX8MM

[zionst]

Please kindly note that I had also tried removing this RDC configuration assigned by SPL, to ensure only this example configures RDC. After booting from the newly compiled UBoot, the example still doesn't work.

[zejiang0jason]

Hi @zionst , Thanks for reporting this.

This project's binary can't be loaded and run by uboot. The right way is load M core binary using debugger. The project readme mention the limitation that can't run with uboot, but didn't mention the binary must be load by debugger, will update the readme.

thanks.

[zionst]

Thank you @zejiang0jason.

Does it support running from remoteproc in Linux? (I tried that as mentioned in the first thread, it didn't work.)