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82cb2c1ad9
To make software license auditing simpler, use SPDX[0] license identifiers instead of duplicating the license text in every file. NOTE: Files that have been imported by FreeBSD have not been modified. [0]: https://spdx.org/ Change-Id: I80a00e1f641b8cc075ca5a95b10607ed9ed8761a Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
111 lines
4.4 KiB
C
111 lines
4.4 KiB
C
/*
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* Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <bl31.h>
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#include <bl_common.h>
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#include <context.h>
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#include <context_mgmt.h>
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#include <cpu_data.h>
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#include <platform.h>
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/*******************************************************************************
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* This function returns a pointer to the most recent 'cpu_context' structure
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* for the calling CPU that was set as the context for the specified security
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* state. NULL is returned if no such structure has been specified.
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******************************************************************************/
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void *cm_get_context(uint32_t security_state)
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{
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assert(security_state <= NON_SECURE);
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return get_cpu_data(cpu_context[security_state]);
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}
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/*******************************************************************************
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* This function sets the pointer to the current 'cpu_context' structure for the
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* specified security state for the calling CPU
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******************************************************************************/
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void cm_set_context(void *context, uint32_t security_state)
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{
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assert(security_state <= NON_SECURE);
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set_cpu_data(cpu_context[security_state], context);
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}
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/*******************************************************************************
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* This function returns a pointer to the most recent 'cpu_context' structure
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* for the CPU identified by `cpu_idx` that was set as the context for the
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* specified security state. NULL is returned if no such structure has been
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* specified.
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******************************************************************************/
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void *cm_get_context_by_index(unsigned int cpu_idx,
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unsigned int security_state)
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{
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assert(sec_state_is_valid(security_state));
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return get_cpu_data_by_index(cpu_idx, cpu_context[security_state]);
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}
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/*******************************************************************************
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* This function sets the pointer to the current 'cpu_context' structure for the
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* specified security state for the CPU identified by CPU index.
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******************************************************************************/
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void cm_set_context_by_index(unsigned int cpu_idx, void *context,
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unsigned int security_state)
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{
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assert(sec_state_is_valid(security_state));
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set_cpu_data_by_index(cpu_idx, cpu_context[security_state], context);
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}
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#if !ERROR_DEPRECATED
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/*
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* These context management helpers are deprecated but are maintained for use
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* by SPDs which have not migrated to the new API. If ERROR_DEPRECATED
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* is enabled, these are excluded from the build so as to force users to
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* migrate to the new API.
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*/
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/*******************************************************************************
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* This function returns a pointer to the most recent 'cpu_context' structure
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* for the CPU identified by MPIDR that was set as the context for the specified
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* security state. NULL is returned if no such structure has been specified.
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******************************************************************************/
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void *cm_get_context_by_mpidr(uint64_t mpidr, uint32_t security_state)
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{
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assert(sec_state_is_valid(security_state));
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return cm_get_context_by_index(platform_get_core_pos(mpidr), security_state);
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}
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/*******************************************************************************
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* This function sets the pointer to the current 'cpu_context' structure for the
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* specified security state for the CPU identified by MPIDR
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******************************************************************************/
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void cm_set_context_by_mpidr(uint64_t mpidr, void *context, uint32_t security_state)
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{
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assert(sec_state_is_valid(security_state));
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cm_set_context_by_index(platform_get_core_pos(mpidr),
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context, security_state);
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}
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/*******************************************************************************
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* The following function provides a compatibility function for SPDs using the
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* existing cm library routines. This function is expected to be invoked for
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* initializing the cpu_context for the CPU specified by MPIDR for first use.
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******************************************************************************/
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void cm_init_context(unsigned long mpidr, const entry_point_info_t *ep)
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{
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if ((mpidr & MPIDR_AFFINITY_MASK) ==
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(read_mpidr_el1() & MPIDR_AFFINITY_MASK))
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cm_init_my_context(ep);
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else
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cm_init_context_by_index(platform_get_core_pos(mpidr), ep);
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}
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#endif
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