GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/lib/cpus/aarch64/neoverse_n1_pubsub.c

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <neoverse_n1.h>
+#include <cpuamu.h>
+#include <lib/el3_runtime/pubsub_events.h>
+
+static void *neoverse_n1_context_save(const void *arg)
+{
+	if (midr_match(NEOVERSE_N1_MIDR) != 0)
+		cpuamu_context_save(NEOVERSE_N1_AMU_NR_COUNTERS);
+
+	return (void *)0;
+}
+
+static void *neoverse_n1_context_restore(const void *arg)
+{
+	if (midr_match(NEOVERSE_N1_MIDR) != 0)
+		cpuamu_context_restore(NEOVERSE_N1_AMU_NR_COUNTERS);
+
+	return (void *)0;
+}
+
+SUBSCRIBE_TO_EVENT(psci_suspend_pwrdown_start, neoverse_n1_context_save);
+SUBSCRIBE_TO_EVENT(psci_suspend_pwrdown_finish, neoverse_n1_context_restore);