topic Re: [CSE] "system memory error" after writing master key in MPC5xxx

[CSE] "system memory error" after writing master key

jaejynshin — Fri, 05 May 2017 19:41:46 GMT

This question is related to the below one

https://community.nxp.com/message/902848?commentID=902848#comment-902848

@Expert

I got below error code in the CSE_ECR right after writing master key

I found the reason of the error in the "AN4234_Using the Cryptographic Service Engine(CSE)MPC564XBC.pdf" document, but I still didn't understant the real reason.

But after checking the RCHW in the below question, I got to know the my RCHW has no problem

https://community.nxp.com/message/902848?commentID=902848#comment-902848

Then, is there any other reason that generating 0x0C in ECR register?

Thank you

Jaejyn

Re: [CSE] "system memory error" after writing master key

jaejynshin — Mon, 08 May 2017 12:58:21 GMT

Is it because of the lock register of C55MC ?

Re: [CSE] "system memory error" after writing master key

jaejynshin — Mon, 08 May 2017 20:09:06 GMT

I could not change the LOCK1 register even though I wrote like below

If the reason of "system memory error" is due to the LOCK register.

I should solve why the LOCK1 register can not be modified.

However, if the reason is different, I should investigate it more.

Re: [CSE] "system memory error" after writing master key

jaejynshin — Mon, 15 May 2017 07:43:25 GMT

Finally, I found the reason why "system memory error" occurred in my system.

The M1~M5 was assigned from local variable address, and the stack is used in the cache.

That is, stack is locked in the cache.

Because I assigned local variable addresses to the M1~M5 address, the CSE could not read the addresses.

After I gave the addresses of global variables to the M1~M5, this problem was solved.

Thank you!