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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSBSPsSPARCLEON3
*
* @brief This source file contains the implementation of bsp_start() and
* definitions of BSP-specific objects.
*/
/*
* COPYRIGHT (c) 2011
* Aeroflex Gaisler
*
* COPYRIGHT (c) 1989-2013.
* On-Line Applications Research Corporation (OAR).
*
* Modified for LEON3 BSP.
* COPYRIGHT (c) 2004.
* Gaisler Research.
*
* 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/irq-generic.h>
#include <bsp/leon3.h>
#include <bsp/bootcard.h>
#include <rtems/sysinit.h>
#if defined(RTEMS_SMP) || defined(RTEMS_MULTIPROCESSING)
/* Irq used by shared memory driver and for inter-processor interrupts.
* Can be overridden by being defined in the application.
*/
const unsigned char LEON3_mp_irq __attribute__((weak)) = 14;
#endif
/*
* Tells us if data cache snooping is available
*/
int CPU_SPARC_HAS_SNOOPING;
/* Index of CPU, in an AMP system CPU-index may be non-zero */
uint32_t LEON3_Cpu_Index = 0;
/*
* set_snooping
*
* Read the cache control register to determine if
* bus snooping is available and enabled. This is needed for some
* drivers so that they can select the most efficient copy routines.
*
*/
static inline int set_snooping(void)
{
return (leon3_get_cache_control_register() >> 23) & 1;
}
/*
* bsp_start
*
* This routine does the bulk of the system initialization.
*/
void bsp_start( void )
{
CPU_SPARC_HAS_SNOOPING = set_snooping();
#ifndef RTEMS_DRVMGR_STARTUP
bsp_interrupt_initialize();
#endif
}
static void leon3_cpu_index_init(void)
{
/* Get the LEON3 CPU index, normally 0, but for MP systems we do
* _not_ assume that this is CPU0. One may run another OS on CPU0
* and RTEMS on this CPU, and AMP system with mixed operating
* systems
*/
LEON3_Cpu_Index = _LEON3_Get_current_processor();
}
RTEMS_SYSINIT_ITEM(
leon3_cpu_index_init,
RTEMS_SYSINIT_BSP_START,
RTEMS_SYSINIT_ORDER_FIRST
);
/*
* Initialize shared interrupt handling, must be done after IRQ controller has
* been found and initialized.
*/
#ifdef RTEMS_DRVMGR_STARTUP
RTEMS_SYSINIT_ITEM(
bsp_interrupt_initialize,
RTEMS_SYSINIT_DRVMGR_LEVEL_1,
RTEMS_SYSINIT_ORDER_LAST_BUT_5
);
#endif
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