| 46,6 → 46,16 |
|---|
| |
| #define IT_SERVICE_CLOCKS 64 |
| |
| #define FREQ_NUMERATOR_SHIFT 32 |
| #define FREQ_NUMERATOR_MASK 0xffffffff00000000LL |
| |
| #define FREQ_DENOMINATOR_SHIFT 0 |
| #define FREQ_DENOMINATOR_MASK 0xffffffffLL |
| |
| |
| uint64_t it_delta; |
| |
| |
| static irq_t it_irq; |
| |
| static irq_ownership_t it_claim(void); |
| 64,6 → 74,14 |
|---|
| it_irq.claim = it_claim; |
| it_irq.handler = it_interrupt; |
| irq_register(&it_irq); |
| |
| uint64_t base_freq; |
| base_freq = ((bootinfo->freq_scale) & FREQ_NUMERATOR_MASK) >> FREQ_NUMERATOR_SHIFT; |
| base_freq *= bootinfo->sys_freq; |
| base_freq /= ((bootinfo->freq_scale) & FREQ_DENOMINATOR_MASK) >> FREQ_DENOMINATOR_SHIFT; |
| |
| it_delta = base_freq /HZ; |
| |
| } |
| |
| /* initialize Interval Timer external interrupt vector */ |