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532ed61838
This patch moves the PSCI services and BL31 frameworks like context management and per-cpu data into new library components `PSCI` and `el3_runtime` respectively. This enables PSCI to be built independently from BL31. A new `psci_lib.mk` makefile is introduced which adds the relevant PSCI library sources and gets included by `bl31.mk`. Other changes which are done as part of this patch are: * The runtime services framework is now moved to the `common/` folder to enable reuse. * The `asm_macros.S` and `assert_macros.S` helpers are moved to architecture specific folder. * The `plat_psci_common.c` is moved from the `plat/common/aarch64/` folder to `plat/common` folder. The original file location now has a stub which just includes the file from new location to maintain platform compatibility. Most of the changes wouldn't affect platform builds as they just involve changes to the generic bl1.mk and bl31.mk makefiles. NOTE: THE `plat_psci_common.c` FILE HAS MOVED LOCATION AND THE STUB FILE AT THE ORIGINAL LOCATION IS NOW DEPRECATED. PLATFORMS SHOULD MODIFY THEIR MAKEFILES TO INCLUDE THE FILE FROM THE NEW LOCATION. Change-Id: I6bd87d5b59424995c6a65ef8076d4fda91ad5e86
134 lines
5.8 KiB
C
134 lines
5.8 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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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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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