SRKH register key values for i.MX6 & i.MX8

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SRKH register key values for i.MX6 & i.MX8

628件の閲覧回数
jbhaijy
Contributor III

Dear Experts,

We have SRKH register key values setup for i.MX6. Now we are migrating from i.MX6 to i.MX8, so can we use the same values that we use for the i.MX6?

 

Regards,

Yunus

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609件の閲覧回数
jbhaijy
Contributor III

Any update on above query?

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605件の閲覧回数
Sanket_Parekh
NXP TechSupport
NXP TechSupport

Hi @jbhaijy 

I hope you are doing well
 
can we use the same values that we use for the i.MX6?
=> No, We will recommend you to use the new value for that board.
 
Thanks & Regards
Sanket Parekh
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600件の閲覧回数
jbhaijy
Contributor III

Hi Sanket, 

Thanks for response.

May I know the reason why we cannot use the same SRKH key value for i.MX8? Is there any SoC specific reason? Please provide some more info. 

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Sanket_Parekh
NXP TechSupport
NXP TechSupport

Hi @jbhaijy 

I hope you are doing well.
 
As both the boards have many architecture wise differences and NXP can not recommend with the same efuses as it is one time programmable. 
One can refer to the section . 1.7 Programming SRK Hash of document root/doc/imx/habv4/guides/mx8m_mx8mm_secure_boot.txt
 
"Be careful when programming these values, as this data is the basis for the root of trust. An error in SRK Hash results in a part that does not boot."
 
Thanks & Regards
Sanket Parekh
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