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pl031: support rtc-timer property for pl031

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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 <wanghaibin.wang@huawei.com>
Reviewed-by: Shannon Zhao <shanon.Zhaosl@gmail.com>
Reviewed-by: Ying Fang <fangying1@huawei.com>
Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: Jinhao Gao <gaojinhao@huawei.com>
This commit is contained in:
Chen Qun 2022-02-15 17:02:08 +08:00 committed by yezengruan
parent 3e2685401c
commit 472d8c2cb0
1 changed files with 70 additions and 0 deletions
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pl031-support-rtc-timer-property-for-pl031.patch Normal file
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@ -0,0 +1,70 @@
From f8e5f099c5b6665e3ed9f397ddca9283148938a4 Mon Sep 17 00:00:00 2001
From: Jinhao Gao <gaojinhao@huawei.com>
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 <wanghaibin.wang@huawei.com>
Reviewed-by: Shannon Zhao <shanon.Zhaosl@gmail.com>
Reviewed-by: Ying Fang <fangying1@huawei.com>
Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: Jinhao Gao <gaojinhao@huawei.com>
---
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