HPET_CNF_ENABLE
writel(ptr + HPET_CONFIG, val | HPET_CNF_ENABLE);
writel(ptr + HPET_CONFIG, val & ~HPET_CNF_ENABLE);
writel(ptr + HPET_CONFIG, val | HPET_CNF_ENABLE);
writel(ptr + HPET_CONFIG, val & ~HPET_CNF_ENABLE);
writel(ptr + HPET_CONFIG, val & ~HPET_CNF_ENABLE);
writel(ptr + HPET_CONFIG, val & ~HPET_CNF_ENABLE);
val | HPET_CNF_ENABLE);
val & ~HPET_CNF_ENABLE);