Hi,
Hi @mohamed-ali_fod,
I hope you are doing well.
->You need some u-boot executable that's been built to work on the board.
http://imx6dev.blogspot.ru/
Thanks & Regards,
Dhruvit Vasavada
Hi Dhruvit,
Of course I have functional u-boot that works for this board , it works if the u-boot is flashed in the flash memory. Also the same u-boot works fine for non secured board through jtag as I mentioned in my previous email (u-boot-spinor-signed.imx.bin). But my question why this u-boot doesn't work through jtag in secured board (secure_config fuse enabled), what could be the difference vs non secure board.
I hope the question is clear.
Thank you in advance,
Mohamed Ali
Hi @mohamed-ali_fod,
I hope you are doing well.
->Can you let me know if secure JTAG is enabled or not?
->Please verify whether the CSF file had the correct UID.
->Please refer to 5.2.13.1 Unlock Examples in Code-Signing Tool User’s Guide
https://www.nxp.com/webapp/
Hi @Dhruvit,
The secure JTAG is not enabled I enabled only secure_config fuse.
Is it mandatory to add UID in CSF to load signed u-boot through jtag?
Please note that my signed u-boot is working well on my board if the board boot from memory flash, my problem is to boot the board using signed u-boot loaded through jtag.
Best regards,
Mohamed Ali
Hi @mohamed-ali_fod,
I hope you are doing well.
One needs to enable Secure JTAG mode on a closed device.
It limits the JTAG access by using a challenge/response-based authentication mechanism.
Please refer to Secure Debug in i.MX 6/7/8M Family of Applications Processors for more information.
Thanks & Regards,
Dhruvit Vasavada