Toolchain with uClinux support
Xtensa uClinux userspace is based on bFLT executable file format.
- gcc supports xtensa*-*-uclinux* targets starting with version 6.1.
Linux kernel with noMMU support
Linux kernel mainline supports noMMU configurations starting with version 3.19.
Buildroot with noMMU support
Buildroot mainline supports noMMU configurations starting with version 2016.05.
QEMU supports nommu variants of all XTFPGA machines starting with version 2.12.