i.MX Processors中的主题 Re: Secure boot in imx8qxp

Secure boot in imx8qxp

krunaldhonde — Wed, 25 May 2022 10:42:22 GMT

We are having custom board based on imx8qxp.

We have enabled following option in menu config.

 ARM architecture -> Support i.MX 8 AHAB features

We are not able to write fuse in uboot. See below log.

=> fuse prog -y 0 730 0x1a2f7ab3
Programming bank 0 word 0x000002da to 0x1a2f7ab3...
Warning: Words in this index range have ECC protection
and can only be programmed once per word. Individual bit
operations will be rejected after the first one.

Really program this word? <y/N>
y
ERROR

Do we need to enable anything in u-boot ?

Re: Secure boot in imx8qxp

joanxie — Thu, 26 May 2022 10:59:52 GMT

refer to the warning, ECC protected words are automatically write locked after the first write operation

Re: Secure boot in imx8qxp

krunaldhonde — Thu, 26 May 2022 15:14:42 GMT

After first write only we get this error. it never worked for us.

Re: Secure boot in imx8qxp

joanxie — Fri, 27 May 2022 12:42:41 GMT

you can use fuse read to check if you have already programmed or not