[U-Boot] nxp: HABv4 secure boot on iMX7 NAND broken

[Igor Opaniuk]

Hi folks,

Just curious if you ever faced any issues with HABv4 based
secure boot on iMX7 SoC-based boards + NAND +
mainline U-Boot (although it works perfectly when booting from
eMMC).

I'm currently playing with it on Colibri iMX7 NAND version,
following all steps from [1],
(colibri_imx7_defconfig, where CONFIG_SECURE_BOOT=y
and CONFIG_FSL_CAAM=y, without these two options enabled
it's booting ok) and facing the same issue as explained
in one of NXP forum threads [2]. Taking into account that default
BootROM doesn't provide any output at all to the serial console it is like
looking for a needle in a haystack.

Do you have any ideas about possible pitfalls/what could be missing
in this puzzle? Or at least some hints where to look into?

Thanks in advance!

[1] https://gitlab.denx.de/u-boot/u-boot/blob/master/doc/imx/habv4/guides/mx6_mx7_secure_boot.txt
[2] https://community.nxp.com/thread/380130

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Best regards - Freundliche Grüsse - Meilleures salutations

Igor Opaniuk

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