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/*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
* All rights reserved.
*
* Peng Fan <peng.fan@nxp.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 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 <console.h>
#include <kernel/generic_boot.h>
#include <kernel/thread.h>
#include <stdint.h>
#include <sm/optee_smc.h>
#include <sm/psci.h>
#include <sm/sm.h>
#include <trace.h>
__weak uint32_t psci_version(void)
{
return PSCI_VERSION_0_2;
}
__weak int psci_cpu_suspend(uint32_t power_state __unused,
uintptr_t entry __unused,
uint32_t context_id __unused)
{
return PSCI_RET_NOT_SUPPORTED;
}
__weak int psci_cpu_off(void)
{
return PSCI_RET_NOT_SUPPORTED;
}
__weak int psci_cpu_on(uint32_t cpu_id __unused, uint32_t entry __unused,
uint32_t context_id __unused)
{
return PSCI_RET_NOT_SUPPORTED;
}
__weak int psci_affinity_info(uint32_t affinity __unused,
uint32_t lowest_affnity_level __unused)
{
return PSCI_RET_NOT_SUPPORTED;
}
__weak int psci_migrate(uint32_t cpu_id __unused)
{
return PSCI_RET_NOT_SUPPORTED;
}
__weak int psci_migrate_info_type(void)
{
return PSCI_RET_NOT_SUPPORTED;
}
__weak int psci_migrate_info_up_cpu(void)
{
return PSCI_RET_NOT_SUPPORTED;
}
__weak void psci_system_off(void)
{
}
__weak void psci_system_reset(void)
{
}
__weak int psci_features(uint32_t psci_fid __unused)
{
return PSCI_RET_NOT_SUPPORTED;
}
__weak int psci_node_hw_state(uint32_t cpu_id __unused,
uint32_t power_level __unused)
{
return PSCI_RET_NOT_SUPPORTED;
}
__weak int psci_stat_residency(uint32_t cpu_id __unused,
uint32_t power_state __unused)
{
return PSCI_RET_NOT_SUPPORTED;
}
__weak int psci_stat_count(uint32_t cpu_id __unused,
uint32_t power_state __unused)
{
return PSCI_RET_NOT_SUPPORTED;
}
void tee_psci_handler(struct thread_smc_args *args)
{
uint32_t smc_fid = args->a0;
uint32_t a1 = args->a1;
uint32_t a2 = args->a2;
uint32_t a3 = args->a3;
switch (smc_fid) {
case PSCI_VERSION:
args->a0 = psci_version();
break;
case PSCI_CPU_SUSPEND:
args->a0 = psci_cpu_suspend(a1, a2, a3);
break;
case PSCI_CPU_OFF:
args->a0 = psci_cpu_off();
break;
case PSCI_CPU_ON:
args->a0 = psci_cpu_on(a1, a2, a3);
break;
case PSCI_AFFINITY_INFO:
args->a0 = psci_affinity_info(a1, a2);
break;
case PSCI_MIGRATE:
args->a0 = psci_migrate(a1);
break;
case PSCI_MIGRATE_INFO_TYPE:
args->a0 = psci_migrate_info_type();
break;
case PSCI_MIGRATE_INFO_UP_CPU:
args->a0 = psci_migrate_info_up_cpu();
break;
case PSCI_SYSTEM_OFF:
psci_system_off();
while (1)
;
break;
case PSCI_SYSTEM_RESET:
psci_system_reset();
while (1)
;
break;
case PSCI_PSCI_FEATURES:
args->a0 = psci_features(a1);
break;
case PSCI_NODE_HW_STATE:
args->a0 = psci_node_hw_state(a1, a2);
break;
default:
args->a0 = OPTEE_SMC_RETURN_UNKNOWN_FUNCTION;
break;
}
}
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