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-rw-r--r--plat/mediatek/mt8173/power_tracer.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/plat/mediatek/mt8173/power_tracer.c b/plat/mediatek/mt8173/power_tracer.c
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+++ b/plat/mediatek/mt8173/power_tracer.c
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+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <arch.h>
+#include <debug.h>
+#include <power_tracer.h>
+
+#define trace_log(...) INFO("psci: " __VA_ARGS__)
+
+void trace_power_flow(unsigned long mpidr, unsigned char mode)
+{
+ switch (mode) {
+ case CPU_UP:
+ trace_log("core %ld:%ld ON\n",
+ (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS,
+ (mpidr & MPIDR_CPU_MASK));
+ break;
+ case CPU_DOWN:
+ trace_log("core %ld:%ld OFF\n",
+ (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS,
+ (mpidr & MPIDR_CPU_MASK));
+ break;
+ case CPU_SUSPEND:
+ trace_log("core %ld:%ld SUSPEND\n",
+ (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS,
+ (mpidr & MPIDR_CPU_MASK));
+ break;
+ case CLUSTER_UP:
+ trace_log("cluster %ld ON\n",
+ (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS);
+ break;
+ case CLUSTER_DOWN:
+ trace_log("cluster %ld OFF\n",
+ (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS);
+ break;
+ case CLUSTER_SUSPEND:
+ trace_log("cluster %ld SUSPEND\n",
+ (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS);
+ break;
+ default:
+ trace_log("unknown power mode\n");
+ break;
+ }
+}