In the Unified bootloader S32K144, there is only the binary file for flash_driver, but not the source code. Can you provide the source code for flash_driver, as well as guidance on how to create this flash_driver.bin file? S32K1 S32K144EVB
Please take a look at this article:
https://community.nxp.com/t5/S32K-Knowledge-Base/S32K-How-to-make-Flash-Driver-image/ta-p/1630873