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/**
* @file
* @ingroup sparc_leon3
* @brief LEON3 BSP fatal extension
*
* Copyright (c) 2014 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* COPYRIGHT (c) 2014
* Aeroflex Gaisler
*
* 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 <bsp.h>
#include <bsp/bootcard.h>
#include <rtems/bspIo.h>
#include <rtems/score/smpimpl.h>
void bsp_fatal_extension(
rtems_fatal_source source,
bool always_set_to_false,
rtems_fatal_code code
)
{
/* On SMP we must wait for all other CPUs not requesting a fatal halt, they
* are responding to another CPU's fatal request. These CPUs goes into
* power-down. The CPU requesting fatal halt waits for the others and then
* handles the system shutdown via the normal procedure.
*/
#ifdef RTEMS_SMP
if ((source == RTEMS_FATAL_SOURCE_SMP) &&
(code == SMP_FATAL_SHUTDOWN_RESPONSE)) {
leon3_power_down_loop(); /* CPU didn't start shutdown sequence .. */
} else {
volatile struct irqmp_regs *irqmp = LEON3_IrqCtrl_Regs;
if (irqmp != NULL) {
/*
* Value was choosen to get something in the magnitude of 1ms on a 200MHz
* processor.
*/
uint32_t max_wait = 1234567;
uint32_t self_cpu = rtems_get_current_processor();
uint32_t cpu_count = rtems_get_processor_count();
uint32_t halt_mask = 0;
uint32_t i;
for (i = 0; i < cpu_count; ++i) {
if ( (i != self_cpu) && _SMP_Should_start_processor( i ) ) {
halt_mask |= UINT32_C(1) << i;
}
}
/* Wait some time for secondary processors to halt */
i = 0;
while ((irqmp->mpstat & halt_mask) != halt_mask && i < max_wait) {
++i;
}
}
}
#endif
#if (BSP_PRINT_EXCEPTION_CONTEXT)
if ( source == RTEMS_FATAL_SOURCE_EXCEPTION ) {
rtems_exception_frame_print( (const rtems_exception_frame *) code );
}
#endif
/*
* If user wants to implement custom reset/reboot it can be done here
*/
#if (BSP_RESET_BOARD_AT_EXIT)
bsp_reset();
#endif
}
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