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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
* @ingroup sparc_leon3
* @brief LEON3 BSP fatal extension
*
* Copyright (c) 2014 embedded brains GmbH & Co. KG
*
* COPYRIGHT (c) 2014
* Aeroflex Gaisler
*
* 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 <bsp.h>
#include <bsp/bootcard.h>
#include <bsp/leon3.h>
#include <rtems/score/cpuimpl.h>
#include <rtems/score/smpimpl.h>
#if defined(RTEMS_SMP)
static void leon3_wait_for_power_down(irqamp *regs)
{
uint32_t max_wait;
uint32_t cpu_self;
uint32_t cpu_count;
uint32_t halt_mask;
uint32_t i;
cpu_count = leon3_get_cpu_count(regs);
if (cpu_count > rtems_configuration_get_maximum_processors()) {
cpu_count = rtems_configuration_get_maximum_processors();
}
cpu_self = rtems_scheduler_get_processor();
halt_mask = 0;
for (i = 0; i < cpu_count; ++i) {
if (i != cpu_self && _SMP_Should_start_processor(i)) {
halt_mask |= UINT32_C(1) << i;
}
}
/*
* Wait some time for secondary processors to halt.
*
* The value was chosen to get something in the magnitude of 1ms on a 200MHz
* processor.
*/
max_wait = 1234567;
i = 0;
while (
(grlib_load_32(®s->mpstat) & halt_mask) != halt_mask && i < max_wait
) {
++i;
}
}
#endif
void bsp_fatal_extension(
rtems_fatal_source source,
bool always_set_to_false,
rtems_fatal_code code
)
{
rtems_interrupt_level level;
rtems_interrupt_local_disable(level);
(void) level;
#if defined(RTEMS_SMP)
/*
* 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.
*/
if ((source == RTEMS_FATAL_SOURCE_SMP) &&
(code == SMP_FATAL_SHUTDOWN_RESPONSE)) {
leon3_power_down_loop(); /* CPU didn't start shutdown sequence .. */
} else {
irqamp *regs;
_SMP_Request_shutdown();
regs = LEON3_IrqCtrl_Regs;
#if defined(LEON3_IRQAMP_BASE)
leon3_wait_for_power_down(regs);
#else
if (regs != NULL) {
leon3_wait_for_power_down(regs);
}
#endif
}
#endif
#if BSP_PRINT_EXCEPTION_CONTEXT
if ( source == RTEMS_FATAL_SOURCE_EXCEPTION ) {
rtems_exception_frame_print( (const rtems_exception_frame *) code );
}
#endif
#if BSP_RESET_BOARD_AT_EXIT
/*
* Stop the system termination right now. This skips the dynamically
* installed fatal error extensions and the generics shutdown procedure.
*/
_CPU_Fatal_halt( source, code );
#endif
}
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