log_rpc: replace crash log with crash dump #21420
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Add Zephyr core dump backend that saves a core dump to the internal flash or RRAM partition named "coredump_partition". This backend is an alternative to BACKEND_FLASH_PARTITION provided by Zephyr but it bypasses Zephyr flash device layer and uses nrfx directly, which offers the following benefits: 1. Bypasses synchronization primitives used by Zephyr flash or RRAM drivers. Currently, Zephyr flash drivers cannot be used to write to flash from a fault handler because of this. 2. Works with Partition Manager. 3. Minimizes the dependencies needed to successfully write a core dump, which is important as the core dump often needs to be written when the system is in the corrupted state. Only flash and RRAM are supported for now (no MRAM support).
Replace a custom solution for storing crash log in retained RAM and exposing it in as a string over RPC with Zephyr Core Dump module. In the latter solution RPC is only used to fetch the crash dump to the remote device.
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First commit shared with #21418
log_rpc: replace crash log with crash dump
Replace a custom solution for storing crash log in retained RAM and exposing it in as a string over RPC with Zephyr Core Dump module. In the latter solution RPC is only used to fetch the crash dump to the remote device.