qemu/arm64: add pm support

add arm64 qemu pm compatible for demo pm_idle in not smp & smp usage
demo, chip should based on demo to add more operation in pm_idle_handler

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

arch/arm64/src/qemu/CMakeLists.txt

@@ -25,4 +25,7 @@ endif()
 if(CONFIG_ARCH_USE_TEXT_HEAP)
   list(APPEND SRCS qemu_textheap.c)
 endif()
+if(CONFIG_PM)
+  list(APPEND SRCS qemu_initialize.c)
+endif()
 target_sources(arch PRIVATE ${SRCS})

arch/arm64/src/qemu/Make.defs

@@ -30,3 +30,7 @@ endif
 ifeq ($(CONFIG_ARCH_USE_TEXT_HEAP),y)
 CHIP_CSRCS += qemu_textheap.c
 endif
+
+ifeq ($(CONFIG_PM), y)
+CHIP_CSRCS += qemu_initialize.c
+endif

arch/arm64/src/qemu/qemu_initialize.c

@@ -0,0 +1,116 @@
+/****************************************************************************
+ * arch/arm64/src/qemu/qemu_initialize.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/config.h>
+#include <nuttx/power/pm.h>
+#include <stdbool.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void arm64_pminitialize(void)
+{
+  pm_initialize();
+}
+
+#ifdef CONFIG_SMP
+static bool pm_idle_handler(int cpu,
+                               enum pm_state_e cpu_state,
+                               enum pm_state_e system_state)
+{
+  bool first = false;
+  switch (cpu_state)
+    {
+      case PM_NORMAL:
+      case PM_IDLE:
+      case PM_STANDBY:
+      case PM_SLEEP:
+
+        /* do cpu domain pm enter operations */
+
+        asm("NOP");
+
+        if (system_state >= PM_NORMAL)
+          {
+            switch (system_state)
+              {
+                case PM_NORMAL:
+                case PM_IDLE:
+                case PM_STANDBY:
+                case PM_SLEEP:
+
+                  /* do system domain pm enter operations */
+
+                  asm("NOP");
+
+                  break;
+                default:
+                  break;
+              }
+          }
+
+        pm_idle_unlock();
+
+        /* do no cross-core relative operations */
+
+        asm("WFI");
+
+        first = pm_idle_lock(cpu);
+        if (first)
+          {
+            /* do system domain pm leave operations */
+
+            asm("NOP");
+          }
+
+        /* do cpu domain pm leave operations */
+
+        asm("NOP");
+
+        break;
+      default:
+        break;
+    }
+
+  return first;
+}
+#else
+
+static void pm_idle_handler(enum pm_state_e state)
+{
+  switch (state)
+    {
+      default:
+        asm("WFI");
+        break;
+    }
+}
+
+#endif
+
+void up_idle(void)
+{
+  pm_idle(pm_idle_handler);
+}