1 files changed, 57 insertions, 0 deletions
diff --git a/include/lib/mpmm/mpmm.h b/include/lib/mpmm/mpmm.h
new file mode 100644
index 000000000..955c530e8
--- /dev/null
+++ b/include/lib/mpmm/mpmm.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MPMM_H
+#define MPMM_H
+
+#include <stdbool.h>
+
+#include <platform_def.h>
+
+/*
+ * Enable the Maximum Power Mitigation Mechanism.
+ *
+ * This function will enable MPMM for the current core. The AMU counters
+ * representing the MPMM gears must have been configured and enabled prior to
+ * calling this function.
+ */
+void mpmm_enable(void);
+
+/*
+ * MPMM core data.
+ *
+ * This structure represents per-core data retrieved from the hardware
+ * configuration device tree.
+ */
+struct mpmm_core {
+	/*
+	 * Whether MPMM is supported.
+	 *
+	 * Cores with support for MPMM offer one or more auxiliary AMU counters
+	 * representing MPMM gears.
+	 */
+	bool supported;
+};
+
+/*
+ * MPMM topology.
+ *
+ * This topology structure describes the system-wide representation of the
+ * information retrieved from the hardware configuration device tree.
+ */
+struct mpmm_topology {
+	struct mpmm_core cores[PLATFORM_CORE_COUNT]; /* Per-core data */
+};
+
+#if !ENABLE_MPMM_FCONF
+/*
+ * Retrieve the platform's MPMM topology. A `NULL` return value is treated as a
+ * non-fatal error, in which case MPMM will not be enabled for any core.
+ */
+const struct mpmm_topology *plat_mpmm_topology(void);
+#endif /* ENABLE_MPMM_FCONF */
+
+#endif /* MPMM_H */