goldfish:config pl031.

Signed-off-by: yangguangcai <yangguangcai@xiaomi.com>

arch/arm64/src/goldfish/Kconfig

@@ -5,4 +5,14 @@
 
 if ARCH_CHIP_GOLDFISH
 
+config GOLDFISH_RTC_PL031_BASE
+	hex "GOLDFISH RTC PL031 BASE"
+	default 0x09010000
+	depends on RTC_PL031
+
+config GOLDFISH_RTC_PL031_IRQ
+	hex "GOLDFISH RTC PL031 IRQ"
+	default 0x22
+	depends on RTC_PL031
+
 endif # ARCH_CHIP_GOLDFISH

arch/arm64/src/goldfish/Make.defs

@@ -23,6 +23,10 @@ include common/Make.defs
 # qemu-specific C source files
 CHIP_CSRCS = goldfish_boot.c goldfish_serial.c goldfish_timer.c
 
+ifeq ($(CONFIG_RTC_PL031),y)
+  CHIP_CSRCS += goldfish_rtc.c
+endif
+
 ifeq ($(CONFIG_ARCH_EARLY_PRINT),y)
 CHIP_ASRCS = goldfish_lowputc.S
 endif

arch/arm64/src/goldfish/goldfish_rtc.c

@@ -0,0 +1,43 @@
+/***************************************************************************
+ * arch/arm64/src/goldfish/goldfish_rtc.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ***************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ***************************************************************************/
+
+#include <nuttx/arch.h>
+#include <nuttx/timers/pl031.h>
+#include <nuttx/timers/rtc.h>
+#include <nuttx/timers/arch_rtc.h>
+
+/***************************************************************************
+ * Public Functions
+ ***************************************************************************/
+
+int up_rtc_initialize(void)
+{
+  FAR struct rtc_lowerhalf_s *rtc_lowerhalf =
+            pl031_initialize(CONFIG_GOLDFISH_RTC_PL031_BASE,
+                             CONFIG_GOLDFISH_RTC_PL031_IRQ);
+
+  up_rtc_set_lowerhalf(rtc_lowerhalf, true);
+
+  return rtc_initialize(0, rtc_lowerhalf);
+}