https://www.cnx-software.com/2012/03/19/uclinux-running-on-freescale-kinetis-k70-mcu-cortex-m4-module/?amp=1
Last year, I posted about Linux for Cortex M3 & M4 Micro-controllers and noted it was difficult to find cost effective Cortex-M based boards able to
uclinuxrunningfreescalekinetismcu