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/*
* Copyright (c) 2013 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <info@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <assert.h>
#include <rtems/score/smpimpl.h>
#include <libcpu/arm-cp15.h>
#include <bsp/irq.h>
static void bsp_inter_processor_interrupt(void *arg)
{
_SMP_Inter_processor_interrupt_handler();
}
uint32_t _CPU_SMP_Initialize(uint32_t configured_cpu_count)
{
rtems_status_code sc;
uint32_t max_cpu_count = arm_gic_irq_processor_count();
uint32_t used_cpu_count = configured_cpu_count < max_cpu_count ?
configured_cpu_count : max_cpu_count;
sc = rtems_interrupt_handler_install(
ARM_GIC_IRQ_SGI_0,
"IPI",
RTEMS_INTERRUPT_UNIQUE,
bsp_inter_processor_interrupt,
NULL
);
assert(sc == RTEMS_SUCCESSFUL);
return used_cpu_count;
}
void _CPU_SMP_Send_interrupt( uint32_t target_processor_index )
{
rtems_status_code sc = arm_gic_irq_generate_software_irq(
ARM_GIC_IRQ_SGI_0,
ARM_GIC_IRQ_SOFTWARE_IRQ_TO_ALL_IN_LIST,
(uint8_t) (1U << target_processor_index)
);
}
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