diff --git a/pl031-support-rtc-timer-property-for-pl031.patch b/pl031-support-rtc-timer-property-for-pl031.patch new file mode 100644 index 0000000..b57f0e7 --- /dev/null +++ b/pl031-support-rtc-timer-property-for-pl031.patch @@ -0,0 +1,70 @@ +From f8e5f099c5b6665e3ed9f397ddca9283148938a4 Mon Sep 17 00:00:00 2001 +From: Jinhao Gao +Date: Tue, 15 Feb 2022 17:02:08 +0800 +Subject: [PATCH] pl031: support rtc-timer property for pl031 + +This patch adds the rtc-timer property for pl031, we can get the +rtc time (UTC) through qmp command "qom-get date" with this property. + +Signed-off-by: Haibin Wang +Reviewed-by: Shannon Zhao +Reviewed-by: Ying Fang +Signed-off-by: Keqian Zhu +Signed-off-by: Jinhao Gao +--- + hw/rtc/pl031.c | 25 +++++++++++++++++++++++++ + 1 file changed, 25 insertions(+) + +diff --git a/hw/rtc/pl031.c b/hw/rtc/pl031.c +index da8b061e91..61a2948f77 100644 +--- a/hw/rtc/pl031.c ++++ b/hw/rtc/pl031.c +@@ -63,6 +63,15 @@ static uint32_t pl031_get_count(PL031State *s) + return s->tick_offset + now / NANOSECONDS_PER_SECOND; + } + ++static void pl031_get_date(Object *obj, struct tm *current_tm, Error **errp) ++{ ++ PL031State *s = PL031(obj); ++ time_t ti = pl031_get_count(s); ++ ++ /* Changed to UTC time */ ++ gmtime_r(&ti, current_tm); ++} ++ + static void pl031_set_alarm(PL031State *s) + { + uint32_t ticks; +@@ -201,6 +210,20 @@ static void pl031_init(Object *obj) + qemu_clock_get_ns(rtc_clock) / NANOSECONDS_PER_SECOND; + + s->timer = timer_new_ns(rtc_clock, pl031_interrupt, s); ++ object_property_add_tm(OBJECT(s), "date", pl031_get_date); ++} ++ ++static void pl031_realize(DeviceState *d, Error **errp) ++{ ++ object_property_add_alias(qdev_get_machine(), "rtc-time", ++ OBJECT(d), "date"); ++} ++ ++static void pl031_unrealize(DeviceState *d) ++{ ++ if (object_property_find(qdev_get_machine(), "rtc-time")) { ++ object_property_del(qdev_get_machine(), "rtc-time"); ++ } + } + + static void pl031_finalize(Object *obj) +@@ -337,6 +360,8 @@ static void pl031_class_init(ObjectClass *klass, void *data) + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->vmsd = &vmstate_pl031; ++ dc->realize = pl031_realize; ++ dc->unrealize = pl031_unrealize; + device_class_set_props(dc, pl031_properties); + } + +-- +2.27.0 +