S32k322, Driver Mcu - function Clock_Ip_CMU_ClockFailInt, scheck Test INTM,CMU_FC

Marekp — Tue, 13 May 2025 10:09:16 GMT

Hi,
As discussed in the thread: Re: sCheck Test CMU_FM, ISR problem - NXP Community

While performing the sCheck INTM/CMU_FC test, which uses the interrupt ISR Mcu_Cmu_ClockFail_IRQHandler(), an error occurs in the MCU driver, specifically related to Memory Protection.

The Memory Protection Unit (MPU) is configured to catch reads from a NULL_PTR.
In the second iteration, data that is configured as NULL_PTR in the MCU driver is being accessed.

There is no option to change these values in the MCU configuration in TRESOS.

What should be done in this case, given that the MCU driver does not include protection against reading from NULL_PTR, and this affects SAFETY functionality, as the CMU_FC and INTM tests cannot be executed?

There is no option to modify these values in the MCU configuration, and modifying the SafetyBase files is also not allowed.
How can this issue be resolved within the constraints of the current configuration and safety guidelines?

Re: S32k322, Driver Mcu - function Clock_Ip_CMU_ClockFailInt, scheck Test INTM,CMU_FC

RadoslavB — Thu, 22 May 2025 14:46:28 GMT

Hi,

the bug has been reported to RTD team.

As a quick fix you can try to add check for NUL__PTR before read e.g.

official fix for your production code needs to be done by fix in the RTD release.
This has been escalated internally within NXP so all stakeholders are aware already.

Kind Regards,
Radoslav

topic Re: S32k322, Driver Mcu - function Clock_Ip_CMU_ClockFailInt, scheck Test INTM,CMU_FC in S32K

S32k322, Driver Mcu - function Clock_Ip_CMU_ClockFailInt, scheck Test INTM,CMU_FC

Re: S32k322, Driver Mcu - function Clock_Ip_CMU_ClockFailInt, scheck Test INTM,CMU_FC