Index: PLATFORMS.md
==================================================================
--- PLATFORMS.md
+++ PLATFORMS.md
@@ -12,10 +12,20 @@
   * Architectures: ARMv6, ARMv7
   * Compilers: Clang 3.3
   * Runtimes: ObjFW
   * Limitations: Does not work as a shared library
 
+
+Bare metal ARM Cortex-M4
+------------------------
+
+  * Architectures: ARMv7E-M
+  * Compilers: Clang 3.5
+  * Runtimes: ObjFW
+  * Limitations: No threads, no sockets, no files
+  * Note: Bootloader, libc (newlib) and possibly external RAM required
+
 
 DOS
 ---
 
   * OS Versions: Windows XP DOS Emulation, DOSBox