diff options
Diffstat (limited to 'hw/mc146818rtc.c')
| -rw-r--r-- | hw/mc146818rtc.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c index 6c1ad38..ee7a02f 100644 --- a/hw/mc146818rtc.c +++ b/hw/mc146818rtc.c @@ -102,6 +102,7 @@ typedef struct RTCState { QEMUTimer *second_timer2; Notifier clock_reset_notifier; LostTickPolicy lost_tick_policy; + Notifier suspend_notifier; } RTCState; static void rtc_set_time(RTCState *s); @@ -596,6 +597,14 @@ static void rtc_notify_clock_reset(Notifier *notifier, void *data) #endif } +/* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE) + BIOS will read it and start S3 resume at POST Entry */ +static void rtc_notify_suspend(Notifier *notifier, void *data) +{ + RTCState *s = container_of(notifier, RTCState, suspend_notifier); + rtc_set_memory(&s->dev, 0xF, 0xFE); +} + static void rtc_reset(void *opaque) { RTCState *s = opaque; @@ -676,6 +685,9 @@ static int rtc_initfn(ISADevice *dev) s->clock_reset_notifier.notify = rtc_notify_clock_reset; qemu_register_clock_reset_notifier(rtc_clock, &s->clock_reset_notifier); + s->suspend_notifier.notify = rtc_notify_suspend; + qemu_register_suspend_notifier(&s->suspend_notifier); + s->next_second_time = qemu_get_clock_ns(rtc_clock) + (get_ticks_per_sec() * 99) / 100; qemu_mod_timer(s->second_timer2, s->next_second_time); |