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To effect secure boot immediately, which boot sequence does it need?

Question asked by Takayuki Ishii on Dec 25, 2017
Latest reply on Dec 26, 2017 by Takayuki Ishii

Hello community

 

In Document "i.MX_6_Linux_High_Assurance_Boot_(HAB)_Users_Guide_201405.pdf",

It have a sequence to put SEC_CONFIG to close in section 4 "Test Procedure".

 

After write eFuse by echo command,

In chapter 19, it say that "Boot the board again,",

Is this mean that to effect the chip security immediately, it must need a power on/off cycle?

Or it need only reset (POR_B Low cycle) to do that?

 

To reduce the eFuse write cycle time, customer plan to use "POR_B" cycle for it.

 

Best regards,

Ishii.

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