From 68d4653b5ffde629e9b05d5de13b6adcde9d153b Mon Sep 17 00:00:00 2001
From: Ying Fang <fangying1@huawei.com>
Date: Mon, 29 Jul 2019 16:20:51 +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 <shannon.zhaosl@gmail.com>
Reviewed-by: Ying Fang <fangying1@huawei.com>
---
 hw/timer/pl031.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/hw/timer/pl031.c b/hw/timer/pl031.c
index 274ad47a..04331472 100644
--- a/hw/timer/pl031.c
+++ b/hw/timer/pl031.c
@@ -57,6 +57,15 @@ 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;
@@ -191,6 +200,10 @@ 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, NULL);
+    object_property_add_alias(qdev_get_machine(), "rtc-time",
+                              OBJECT(s), "date", NULL);
 }
 
 static int pl031_pre_save(void *opaque)
-- 
2.19.1