imx: mx7: run sec_init for CAAM RNG

This patch adds a sec_init call into arch_misc_init(). Doing so in
conjunction with the patch "drivers/crypto/fsl: assign job-rings to
non-TrustZone" enables use of the CAAM in Linux when OPTEE/TrustZone is
active.

u-boot will initialise the RNG and assign ownership of the job-ring
registers to a non-TrustZone context. With recent changes by Lukas Auer to
fully initialize the RNG in sec_init() this means that u-boot will hand-off
the CAAM in a state that Linux then can use the CAAM without touching the
reserved DECO registers.

This change is safe both for the OPTEE/TrustZone boot path and the regular
non-OPTEE/TrustZone boot path.

Signed-off-by: Bryan O'Donoghue <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Peng Fan <[email protected]>
Cc: Marco Franchi <[email protected]>
Cc: Vanessa Maegima <[email protected]>
Cc: Stefano Babic <[email protected]>
Cc: Lukas Auer <[email protected]>
Tested-by: Lukas Auer <[email protected]>
Reviewed-by: Fabio Estevam <[email protected]>

0 files changed, 0 insertions, 0 deletions