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95 lines
2.9 KiB
C
95 lines
2.9 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 RTEMSBSPsARMFVP
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*
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* @brief This source file contains the implementation of bsp_start_hook_0()
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* and bsp_start_hook_1().
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*/
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/*
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* Copyright (C) 2020 embedded brains GmbH & Co. KG
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <bsp.h>
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#include <bsp/start.h>
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#include <rtems/score/aarch32-pmsa.h>
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#include <rtems/score/aarch32-system-registers.h>
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#ifdef RTEMS_SMP
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#include <rtems.h>
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#include <rtems/score/smpimpl.h>
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#include <bsp/irq-generic.h>
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#include <dev/irq/arm-gic-irq.h>
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#endif
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void bsp_start_hook_0( void )
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{
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#ifdef RTEMS_SMP
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uint32_t cpu_index_self;
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cpu_index_self = _SMP_Get_current_processor();
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if ( cpu_index_self != 0 ) {
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/*
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* The FVP jumps to the entry point of the ELF file on all processors.
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* Prevent the fatal errors SMP_FATAL_MULTITASKING_START_ON_INVALID_PROCESSOR
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* and SMP_FATAL_MULTITASKING_START_ON_UNASSIGNED_PROCESSOR this way.
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*/
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if ( !_SMP_Should_start_processor( cpu_index_self ) ) {
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while ( true ) {
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_ARM_Wait_for_event();
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}
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}
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_AArch32_PMSA_Initialize_default();
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arm_gic_irq_initialize_secondary_cpu();
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/* Change the VBAR from the start to the normal vector table */
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_AArch32_Write_vbar( (uint32_t) bsp_vector_table_begin );
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bsp_interrupt_vector_enable( ARM_GIC_IRQ_SGI_0 );
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_SMP_Start_multitasking_on_secondary_processor(
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_Per_CPU_Get_by_index( cpu_index_self )
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);
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}
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#endif
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}
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void bsp_start_hook_1( void )
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{
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bsp_start_copy_sections();
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_AArch32_PMSA_Initialize_default();
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bsp_start_clear_bss();
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}
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