This would solve a problem that we currently have with UART with Zephyr, and seems like a useful addition. Thanks for putting the change request together.
On Thu, 26 Sep 2019 at 09:48, Andrei Narkevitch via TF-M email@example.com wrote:
We're proposing to add an API that would allow to implement a custom post-startup initialization of hw, peripherals etc. Contrarily to SystemInit() intended for a high priority hw initialization (for example clock and power subsystems), and called on a very early boot stage from startup code, these functions are called from C code, hence variables and other drivers data are protected from being cleared up by the C library init. https://review.trustedfirmware.org/c/trusted-firmware-m/+/1973
Ken and Mate, as maintainers of the TF-M core part, could you please take a look at the patch?
Thanks, Andrey Narkevitch Cypress Semiconductor
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