[nrf noup] boot: zephyr: Do not lock PCD region with TF-M #330
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Previously PCD memory was locked as read-only, non-secure in MCUboot. Given that TF-M also needs write to PCD to communicate with b0n, the memory is left unlocked and locked to read-only, non-secure in TF-M. Signed-off-by: Markus Lassila <markus.lassila@nordicsemi.no>
Previously, when CONFIG_NRF53_MULTI_IMAGE_UPDATE was set and the MCUboot upgrade image was uploaded, but not verified or confirmed, booting the DK caused MCUboot to attempt to start the MCUboot upgrade image as the application image. This was only recoverable with: nrfjprog --family NRF53 --qspieraseall. Signed-off-by: Markus Lassila <markus.lassila@nordicsemi.no>
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Previously PCD memory was locked as read-only, non-secure in MCUboot. Given that TF-M also needs write to PCD to communicate with b0n, the memory is left unlocked and locked to read-only, non-secure in TF-M.
Edit: Added fix to MCUboot upgrade image handling with CONFIG_NRF53_MULTI_IMAGE_UPDATE.