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88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup RTEMSBSPsAArch64Shared
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*
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* @brief SMP startup and interop code.
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*/
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/*
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* Copyright (C) 2021 On-Line Applications Research Corporation (OAR)
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* Written by Kinsey Moore <kinsey.moore@oarcorp.com>
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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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 OWNER 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 <rtems/score/smpimpl.h>
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#include <bsp/irq.h>
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static void bsp_inter_processor_interrupt( void *arg )
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{
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_SMP_Inter_processor_interrupt_handler( _Per_CPU_Get() );
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}
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uint32_t _CPU_SMP_Initialize( void )
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{
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return arm_gic_irq_processor_count();
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}
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static rtems_interrupt_entry aarch64_ipi_entry;
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void _CPU_SMP_Finalize_initialization( uint32_t cpu_count )
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{
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rtems_status_code sc;
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rtems_interrupt_entry_initialize(
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&aarch64_ipi_entry,
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bsp_inter_processor_interrupt,
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NULL,
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"IPI"
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);
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sc = rtems_interrupt_entry_install(
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ARM_GIC_IRQ_SGI_0,
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RTEMS_INTERRUPT_UNIQUE,
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&aarch64_ipi_entry
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);
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_Assert_Unused_variable_equals( sc, RTEMS_SUCCESSFUL );
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}
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void _CPU_SMP_Prepare_start_multitasking( void )
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{
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/* Do nothing */
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}
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void _CPU_SMP_Send_interrupt( uint32_t target_processor_index )
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{
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arm_gic_trigger_sgi(
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ARM_GIC_IRQ_SGI_0,
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1U << target_processor_index
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);
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}
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uint32_t _CPU_SMP_Get_current_processor( void )
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{
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return _Per_CPU_Get_index( _CPU_Get_current_per_CPU_control() );
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}
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