HelenOS sources

MEMMAP_FREE_MEM    73 boot/arch/ia64/src/main.c 		memmap[items].type = MEMMAP_FREE_MEM;
MEMMAP_FREE_MEM   107 boot/arch/ia64/src/main.c 				if (o && o->type == MEMMAP_FREE_MEM &&
MEMMAP_FREE_MEM   112 boot/arch/ia64/src/main.c 				memmap[items].type = MEMMAP_FREE_MEM;
MEMMAP_FREE_MEM   182 boot/arch/ia64/src/main.c 		if (m.type == MEMMAP_FREE_MEM &&
MEMMAP_FREE_MEM    60 kernel/arch/ia64/src/mm/frame.c 		if (bootinfo->memmap[i].type != MEMMAP_FREE_MEM)
HelenOS homepage, sources at GitHub