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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSBSPsARMFVP
*
* @brief This source file contains the implementation of bsp_start_hook_0()
* and bsp_start_hook_1().
*/
/*
* Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <bsp.h>
#include <bsp/start.h>
#include <rtems/score/aarch32-pmsa.h>
#include <rtems/score/aarch32-system-registers.h>
#ifdef RTEMS_SMP
#include <rtems.h>
#include <rtems/score/smpimpl.h>
#include <bsp/irq-generic.h>
#include <dev/irq/arm-gic-irq.h>
#endif
void bsp_start_hook_0( void )
{
#ifdef RTEMS_SMP
uint32_t cpu_index_self;
cpu_index_self = _SMP_Get_current_processor();
if ( cpu_index_self != 0 ) {
/*
* The FVP jumps to the entry point of the ELF file on all processors.
* Prevent the fatal errors SMP_FATAL_MULTITASKING_START_ON_INVALID_PROCESSOR
* and SMP_FATAL_MULTITASKING_START_ON_UNASSIGNED_PROCESSOR this way.
*/
if (
cpu_index_self >= rtems_configuration_get_maximum_processors()
|| !_SMP_Should_start_processor( cpu_index_self )
) {
while ( true ) {
_ARM_Wait_for_event();
}
}
_AArch32_PMSA_Initialize_default();
arm_gic_irq_initialize_secondary_cpu();
/* Change the VBAR from the start to the normal vector table */
_AArch32_Write_vbar( (uint32_t) bsp_vector_table_begin );
bsp_interrupt_vector_enable( ARM_GIC_IRQ_SGI_0 );
_SMP_Start_multitasking_on_secondary_processor(
_Per_CPU_Get_by_index( cpu_index_self )
);
}
#endif
}
void bsp_start_hook_1( void )
{
bsp_start_copy_sections();
_AArch32_PMSA_Initialize_default();
bsp_start_clear_bss();
}
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