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/*
* Copyright (c) 2013-2021, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <bl31/bl31.h>
#include <common/bl_common.h>
#include <context.h>
#include <lib/el3_runtime/context_mgmt.h>
#include <lib/el3_runtime/cpu_data.h>
/*******************************************************************************
* This function returns a pointer to the most recent 'cpu_context' structure
* for the calling CPU that was set as the context for the specified security
* state. NULL is returned if no such structure has been specified.
******************************************************************************/
void *cm_get_context(uint32_t security_state)
{
assert(sec_state_is_valid(security_state));
return get_cpu_data(cpu_context[get_cpu_context_index(security_state)]);
}
/*******************************************************************************
* This function sets the pointer to the current 'cpu_context' structure for the
* specified security state for the calling CPU
******************************************************************************/
void cm_set_context(void *context, uint32_t security_state)
{
assert(sec_state_is_valid(security_state));
set_cpu_data(cpu_context[get_cpu_context_index(security_state)],
context);
}
/*******************************************************************************
* This function returns a pointer to the most recent 'cpu_context' structure
* for the CPU identified by `cpu_idx` that was set as the context for the
* specified security state. NULL is returned if no such structure has been
* specified.
******************************************************************************/
void *cm_get_context_by_index(unsigned int cpu_idx,
unsigned int security_state)
{
assert(sec_state_is_valid(security_state));
return get_cpu_data_by_index(cpu_idx,
cpu_context[get_cpu_context_index(security_state)]);
}
/*******************************************************************************
* This function sets the pointer to the current 'cpu_context' structure for the
* specified security state for the CPU identified by CPU index.
******************************************************************************/
void cm_set_context_by_index(unsigned int cpu_idx, void *context,
unsigned int security_state)
{
assert(sec_state_is_valid(security_state));
set_cpu_data_by_index(cpu_idx,
cpu_context[get_cpu_context_index(security_state)],
context);
}
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