HelenOS sources

PMCR_D_FLAG       570 boot/arch/arm32/include/arch/cp15.h 	PMCR_D_FLAG = 1 << 3,
PMCR_D_FLAG       570 kernel/arch/arm32/include/arch/cp15.h 	PMCR_D_FLAG = 1 << 3,
PMCR_D_FLAG       570 uspace/lib/c/arch/arm32/include/libarch/cp15.h 	PMCR_D_FLAG = 1 << 3,
HelenOS homepage, sources at GitHub