diff options
Diffstat (limited to 'qemu/hw/openrisc/cputimer.c')
| -rw-r--r-- | qemu/hw/openrisc/cputimer.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/qemu/hw/openrisc/cputimer.c b/qemu/hw/openrisc/cputimer.c index 9c5494510..a98c799de 100644 --- a/qemu/hw/openrisc/cputimer.c +++ b/qemu/hw/openrisc/cputimer.c @@ -18,11 +18,12 @@ * License along with this library; if not, see <http://www.gnu.org/licenses/>. */ +#include "qemu/osdep.h" #include "cpu.h" #include "hw/hw.h" #include "qemu/timer.h" -#define TIMER_FREQ (20 * 1000 * 1000) /* 20MHz */ +#define TIMER_PERIOD 50 /* 50 ns period for 20 MHz timer */ /* The time when TTCR changes */ static uint64_t last_clk; @@ -36,8 +37,7 @@ void cpu_openrisc_count_update(OpenRISCCPU *cpu) return; } now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); - cpu->env.ttcr += (uint32_t)muldiv64(now - last_clk, TIMER_FREQ, - get_ticks_per_sec()); + cpu->env.ttcr += (uint32_t)((now - last_clk) / TIMER_PERIOD); last_clk = now; } @@ -59,7 +59,7 @@ void cpu_openrisc_timer_update(OpenRISCCPU *cpu) } else { wait = (cpu->env.ttmr & TTMR_TP) - (cpu->env.ttcr & TTMR_TP); } - next = now + muldiv64(wait, get_ticks_per_sec(), TIMER_FREQ); + next = now + (uint64_t)wait * TIMER_PERIOD; timer_mod(cpu->env.timer, next); } |