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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
The normal way this is done is the DDR training blob is just embedded into the bootloader like any other data, and the bootloader loads it into the PMU. Same exact end result, minus involving a Cortex-M4 core for no reason and minus sticking the blob in external flash for no reason. Here, this is how U-Boot does it on every other platform:
https://github.com/u-boot/u-boot/blob/master/drivers/ddr/imx...
Same code, just running on the main CPU because it is absolutely pointless running it on another core, unless you're trying to obfuscate things to appease the FSF. And then the blob gets appended to the U-Boot image post-build:
https://github.com/u-boot/u-boot/blob/master/tools/imx8m_ima...
Purism went out of their way and wasted a ton of engineering hours just to create a more convoluted process with precisely the same end result, because somehow all these extra layers of obfuscation made the blob not a blob any more in the FSF's eyes.