A quick look at the code


To use inicalls in the hsw2020 repository you need to
include <init.h>
declare your init function as device_initcall() or otherwise


   typedef int (*initcall_t)(void);

   #define __initcall(level,fn) static initcall_t __initcall_ ## fn
         __attribute__((used, __section__(".init" level))) = fn

   #define core_initcall(fn)       __initcall("1", fn)
   /* ... */
   #define late_initcall(fn)       __initcall("7", fn)