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by alex-robbins 680 days ago
> A USB DFU function embedded in boot ROM is flatly undesirable in an MCU with no memory protection.

Are you saying DFU is not useful without an MMU/MPU? Why would that be?
1 comments
ryukoposting 680 days ago
It's certainly useful, but having it embedded within the hardware with no way to properly secure it makes the RP2040 a non-starter for any product I've ever written firmware for.
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TickleSteve 680 days ago
it has secure boot and TrustZone.
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crest 680 days ago
Not the RP2040. That chip has no boot security from anyone with physical access to the QSPI or SWD pins.
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