services/spd/tlkd/tlkd_pm.c

/*
 * 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
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 */

#include <psci.h>

#define MPIDR_CPU0	0x80000000

/*******************************************************************************
 * Return the type of payload TLKD is dealing with. Report the current
 * resident cpu (mpidr format) if it is a UP/UP migratable payload.
 ******************************************************************************/
static int32_t cpu_migrate_info(uint64_t *resident_cpu)
{
	/* the payload runs only on CPU0 */
	*resident_cpu = MPIDR_CPU0;

	/* Uniprocessor, not migrate capable payload */
	return PSCI_TOS_NOT_UP_MIG_CAP;
}

/*******************************************************************************
 * Structure populated by the Dispatcher to be given a chance to perform any
 * bookkeeping before PSCI executes a power mgmt.  operation.
 ******************************************************************************/
const spd_pm_ops_t tlkd_pm_ops = {
	.svc_migrate_info = cpu_migrate_info,
};