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/*
* This set of routines starts the application. It includes application,
* board, and monitor specific initialization and configuration.
* The generic CPU dependent initialization has been performed
* before any of these are invoked.
*
* COPYRIGHT (c) 2011
* Aeroflex Gaisler
*
* COPYRIGHT (c) 1989-2013.
* On-Line Applications Research Corporation (OAR).
*
* Modified for LEON3 BSP.
* COPYRIGHT (c) 2004.
* Gaisler Research.
*
* 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 <leon.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;
#if defined(RTEMS_SMP)
/* Index of the boot CPU. Set by the first CPU at boot to its CPU ID. */
int LEON3_Boot_Cpu = -1;
#endif
/*
* 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();
}
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
);
static void leon3_interrupt_common_init( void )
{
/* Initialize shared interrupt handling, must be done after IRQ
* controller has been found and initialized.
*/
BSP_shared_interrupt_init();
}
/*
* Called just before drivers are initialized. Is used to initialize shared
* interrupt handling.
*/
static void leon3_pre_driver_hook( void )
{
#ifndef RTEMS_DRVMGR_STARTUP
leon3_interrupt_common_init();
#endif
}
RTEMS_SYSINIT_ITEM(
leon3_pre_driver_hook,
RTEMS_SYSINIT_BSP_PRE_DRIVERS,
RTEMS_SYSINIT_ORDER_MIDDLE
);
#ifdef RTEMS_DRVMGR_STARTUP
/*
* Initialize shared interrupt handling, must be done after IRQ controller has
* been found and initialized.
*/
RTEMS_SYSINIT_ITEM(
leon3_interrupt_common_init,
RTEMS_SYSINIT_DRVMGR_LEVEL_1,
RTEMS_SYSINIT_ORDER_LAST_BUT_5
);
#endif
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