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bsp/erc32: Improve pseudo-SMP support

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Add support for _SMP_Send_message() to the own processor.  This is
required by the smpmulticast01 test program.
This commit is contained in:
Sebastian Huber
2019-10-01 08:54:20 +02:00
parent a314544a27
commit be3d697450
2 changed files with 85 additions and 2 deletions
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84
bsps/sparc/erc32/start/bspsmp.c Normal file
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@@ -0,0 +1,84 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (C) 2019 embedded brains GmbH
*
* 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.
*/
#include <rtems/score/smpimpl.h>
#include <rtems/score/assert.h>
#include <rtems/sysinit.h>
#include <bsp.h>
#define IPI_VECTOR SPARC_SYNCHRONOUS_TRAP( 0x91 )
uint32_t _CPU_SMP_Get_current_processor( void )
{
return 0;
}
uint32_t _CPU_SMP_Initialize( void )
{
return 1;
}
bool _CPU_SMP_Start_processor( uint32_t cpu_index )
{
(void) cpu_index;
return true;
}
void _CPU_SMP_Finalize_initialization( uint32_t cpu_count )
{
_Assert( cpu_count == 1 );
(void) cpu_count;
}
void _CPU_SMP_Prepare_start_multitasking( void )
{
}
void _CPU_SMP_Send_interrupt( uint32_t target_processor_index )
{
_Assert( target_processor_index == 0 );
(void) target_processor_index;
__asm__ volatile( "ta 0x11; nop " );
}
static rtems_isr bsp_inter_processor_interrupt(
rtems_vector_number vector
)
{
_SMP_Inter_processor_interrupt_handler( _Per_CPU_Get() );
}
static void erc32_install_inter_processor_interrupt( void )
{
set_vector( bsp_inter_processor_interrupt, IPI_VECTOR, 1 );
}
RTEMS_SYSINIT_ITEM(
erc32_install_inter_processor_interrupt,
RTEMS_SYSINIT_BSP_PRE_DRIVERS,
RTEMS_SYSINIT_ORDER_LAST
);

3
c/src/lib/libbsp/sparc/erc32/Makefile.am
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@@ -55,8 +55,7 @@ librtemsbsp_a_SOURCES += ../../../../../../bsps/sparc/shared/irq/bsp_isr_handler
librtemsbsp_a_SOURCES += ../../../../../../bsps/shared/irq/irq-default-handler.c
if HAS_SMP
librtemsbsp_a_SOURCES += ../../../../../../bsps/shared/start/bspsmp-dummy.c
librtemsbsp_a_SOURCES += ../../../../../../bsps/shared/start/getcurrentprocessor-zero.c
librtemsbsp_a_SOURCES += ../../../../../../bsps/sparc/erc32/start/bspsmp.c
endif
if HAS_NETWORKING