Fuse the secure boot key using UUU tool

rakesh3 — Sun, 16 Apr 2023 08:41:46 GMT

Hi team,

Just for information, I am using the imx6q board and implementing the secure boot HAB and have tested the manual fused the public key

SRK_1_2_3=_4_fuse.bin

is this is working fine, but i want to automate this fusing using in the UUU script.

I have already the information about the HAB block in u-boot.imx.log file

$cat u-boot.imx.log
Image Type: Freescale IMX Boot Image
Image Ver: 2 (i.MX53/6/7 compatible)
Mode: DCD
Data Size: 602112 Bytes = 588.00 KiB = 0.57 MiB
Load Address: 877ff420
Entry Point: 87800000
HAB Blocks: 877ff400 00000000 0008ec00
DCD Blocks: 00910000 0000002c 000001c4

As per the UUU pdf " the IVT is modified when downloading to the target the binary must be signed with a cleared DCD pointer".

Do i have to use the mentioned script for generating the DCD pointer, /mod_4_mfgtool.sh for all images ? or How it works ?

Please give suggestion on this action.

Regards,

Re: Fuse the secure boot key using UUU tool

Harvey021 — Mon, 17 Apr 2023 12:45:26 GMT

Hi @rakesh3

You can try to add the command line (for example: FB:ucmd fuse prog -y bank word hashval ) to uuu script.

Other images are not related to DCD.

Best regards

Harvey

topic Re: Fuse the secure boot key using UUU tool in i.MX Processors

Fuse the secure boot key using UUU tool

Re: Fuse the secure boot key using UUU tool