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How to program the HAB_JDE of OCOTP_SCSn register for i.MX6UL

Question asked by yuuki on Mar 11, 2016
Latest reply on Mar 13, 2016 by igorpadykov

Dear all,

 

We want to use Secure JTAG mode.

 

We set JTAG_SMOD to 0x01 to put SJC in Secure JTAG mode.

(JTAG_SMOD=0x01 / SJC_DISABLE=0 / BOOT_CFG_LOCK=0x1x)

 

In addition, we understand that it is necessary to set HAB_JDE of OCOTP_SCSn register to "1".

 

The following is explained in OCOTP_SCSn register.

"This register holds volatile configuration values that can be set and locked by trusted software."

 

We cannot find a method to make trusted software.

 

Would you tell me the method to make trusted software?

 

May I have advice?

 

Best Regards,

Yuuki

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