Enable "SECURE_SFLASH" is not work.

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AkNu_2072836
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Level 3
First like received Welcome!

I tried "SECURE_SFLASH" option enable.

( added SECURE_SFLASH=1 )

But WICED device seems not work.

Build and downloading seem OK.

DCT.bin is encrypted and encrypted binary is downloaded.

I checked the above from the build log.

But in terminal window are not printed any logs.

In WICED 6.2.1, it seems that there is same issue like below posts.

On using SECURE_BOOT and SECURE_SFLASH options

Regards

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1 Solution

hello:

  Would you please have a check about this document ?  and to check if it can match the secure flash needs from you .

thanks.

https://www.cypress.com/documentation/application-notes/an214842-cyw4390x-otp-programming-and-using-...

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7 Replies
AkNu_2072836
Level 3
Level 3
First like received Welcome!

ZhengbaoZ_96

Please. check it.

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hello:

I am still using DCT application to have a verification, will update to you next Monday , thanks.

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hello:

  Would you please have a check about this document ?  and to check if it can match the secure flash needs from you .

thanks.

https://www.cypress.com/documentation/application-notes/an214842-cyw4390x-otp-programming-and-using-...

pastedImage_0.png

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Hello

> Would you please have a check about this document ? 

> and to check if it can match the secure flash needs from you .

OK, I'll check this document again.

I have started discussion for secure flash features.

So, I'll reply to you later, please wait a moment.

Regards

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ZhengbaoZ_96

Hello

Sorry for my reply too late.

We had checked the document.

I think that SECURE_SFLASH can satisfy our needs.

Regards

And some notes:

As feature functionality involves programming one-time programmable (OTP) nonvolatile memory, it is important to exercise diligent precautions before starting the process .

please have a check if you can visit the link since maybe it is not an open document.

Hello

> As feature functionality involves programming one-time programmable (OTP) nonvolatile memory,

> it is important to exercise diligent precautions before starting the process .

Yes, I know.

I had read application note.

I tried SECURE_SFLASH enable that refered "6.4 Enable Secure Flash" in that document.

I tried that procedure 5 and 6 only.

I didn't generateing, copying secure keys, programming secure keys in OTP area.

(I think that by default NULL (all 0s) keys are used.)

Regards

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