u-boot/arch/arm/include/asm/arch-keystone/mon.h

/*
 * K2HK: secure kernel command header file
 *
 * (C) Copyright 2014
 *     Texas Instruments Incorporated, <www.ti.com>
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

#ifndef _MON_H_
#define _MON_H_

int mon_power_off(int core_id);

#endif