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stm32mp: cmd_stm32key: lock of PKH OTP after fuse
authorPatrick Delaunay <patrick.delaunay@foss.st.com>
Mon, 28 Jun 2021 12:56:00 +0000 (14:56 +0200)
committerPatrick Delaunay <patrick.delaunay@foss.st.com>
Fri, 16 Jul 2021 07:28:46 +0000 (09:28 +0200)
commit3da2552a22580d5cb703bce9f07f1444136589a3
treefdd05ffdd8224fcc5844e5edd46ba90e032d14d3tree | snapshot
parentfe24090eb7f7cfe33a964a7966e78b7ed954ee98commit | diff
stm32mp: cmd_stm32key: lock of PKH OTP after fuse

Lock the OTP value of key's hash after the command
$> stm32key fuse <address>

This operation forbids a second update of these OTP as they are
ECC protected in BSEC: any update of these OTP with a different value
causes a BSEC disturb error and the closed chip will be bricked.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
arch/arm/mach-stm32mp/cmd_stm32key.c diff | blob | history
Domain: System / Kernel;