S32k144 back door key verify example inquiry

lim — Tue, 14 Dec 2021 05:01:46 GMT

Hi NXP

Now we want rewrite a Flash Configuration Field Offset Address's 0x0_040C for Flash Security Disable. do you have any Example Code?

We want that using for Debugger connect with a Security Disable/Mass Erase Enable

Re: S32k144 back door key verify example inquiry

Senlent — Tue, 14 Dec 2021 09:14:38 GMT

Hi@lim

You don't need to write any code, just modify these areas.

for example:Enable system security and Enable mass erase.

__FlashConfig DCD 0xFFFFFFFF ; 8 bytes backdoor comparison key DCD 0xFFFFFFFF ; DCD 0xFFFFFFFF ; 4 bytes program flash protection bytes DCD 0xFFFF7FFF ; FDPROT:FEPROT:FOPT:FSEC(0xFE = unsecured) __FlashConfig_End

please refers to this article.

https://www.nxp.com.cn/docs/en/application-note/AN12130.pdf

know more:

It is very similar to the security features of the Kinetis family MCUs. You can refer to AN4507 Using the Kinetis Security and Flash Protection Features
https://www.nxp.com/docs/en/application-note/AN4507.pdf

BR!

Jim,

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S32k144 back door key verify example inquiry

Re: S32k144 back door key verify example inquiry