https://community.nxp.com/t5/i-MX-Processors/JTAG-Alarm/m-p/1587745#M200626 <P>Hi,</P><P>iMX8Mini processor.</P><P>I would like to receive some tips regarding the following message in Linux Kernel 5.70.72</P><P><SPAN>[ &nbsp;990.996058] caam-snvs 30370000.caam-snvs: Unhandled Security Violation Interrupt 1 = JTAG Alarm</SPAN><BR /><SPAN>[ &nbsp;991.004832] caam-snvs 30370000.caam-snvs: Unhandled Security Violation Interrupt 0 = CAAM Internal Security Violation</SPAN></P><P><SPAN>It does not happen all the time.</SPAN></P><P><SPAN>Occurs while debugging Cortex M4 with J-Link. I have not blow the JTAG fusses, left them unchanged.</SPAN></P><P><SPAN>I would also like some documentation similar to the iMX6 document related to secure JTAG, as well as how to configure the secure key in J-Link.</SPAN></P><P><SPAN>Daniel.</SPAN></P><P>&nbsp;</P><P>&nbsp;</P> Wed, 25 Jan 2023 16:23:36 GMT dwainer 2023-01-25T16:23:36Z https://community.nxp.com/t5/i-MX-Processors/JTAG-Alarm/m-p/1587745#M200626 <P>Hi,</P><P>iMX8Mini processor.</P><P>I would like to receive some tips regarding the following message in Linux Kernel 5.70.72</P><P><SPAN>[ &nbsp;990.996058] caam-snvs 30370000.caam-snvs: Unhandled Security Violation Interrupt 1 = JTAG Alarm</SPAN><BR /><SPAN>[ &nbsp;991.004832] caam-snvs 30370000.caam-snvs: Unhandled Security Violation Interrupt 0 = CAAM Internal Security Violation</SPAN></P><P><SPAN>It does not happen all the time.</SPAN></P><P><SPAN>Occurs while debugging Cortex M4 with J-Link. I have not blow the JTAG fusses, left them unchanged.</SPAN></P><P><SPAN>I would also like some documentation similar to the iMX6 document related to secure JTAG, as well as how to configure the secure key in J-Link.</SPAN></P><P><SPAN>Daniel.</SPAN></P><P>&nbsp;</P><P>&nbsp;</P> Wed, 25 Jan 2023 16:23:36 GMT https://community.nxp.com/t5/i-MX-Processors/JTAG-Alarm/m-p/1587745#M200626 dwainer 2023-01-25T16:23:36Z https://community.nxp.com/t5/i-MX-Processors/JTAG-Alarm/m-p/1590100#M200810 <P>Hello,<BR /><BR />This alarm is part of the SNVS as you can see in the log, please refer to the security reference manual for more information.<BR /><BR />Regarding documentation you may refer to the following:<BR /><A href="https://www.nxp.com/webapp/Download?colCode=AN4686" target="_blank">https://www.nxp.com/webapp/Download?colCode=AN4686</A><BR /><BR />Best regards,<BR />Aldo.</P> Mon, 30 Jan 2023 23:32:18 GMT https://community.nxp.com/t5/i-MX-Processors/JTAG-Alarm/m-p/1590100#M200810 AldoG 2023-01-30T23:32:18Z