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/*
* Instantiate the clock driver shell for the Mongoose-V's on-CPU timer.
*
* COPYRIGHT (c) 1989-2001.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#include <rtems.h>
#include <libcpu/mongoose-v.h>
#include <bsp.h>
#if defined(USE_TIMER2_FOR_CLOCK)
#define CLOCK_BASE MONGOOSEV_TIMER2_BASE
#define CLOCK_VECTOR MONGOOSEV_IRQ_TIMER2
#else
#define CLOCK_BASE MONGOOSEV_TIMER1_BASE
#define CLOCK_VECTOR MONGOOSEV_IRQ_TIMER1
#endif
/* reset Timeout (TO) bit */
#define Clock_driver_support_at_tick() \
do { \
MONGOOSEV_WRITE_REGISTER( CLOCK_BASE, MONGOOSEV_TIMER_CONTROL_REGISTER, \
(MONGOOSEV_TIMER_CONTROL_COUNTER_ENABLE | MONGOOSEV_TIMER_CONTROL_INTERRUPT_ENABLE)); \
} while(0)
#define Clock_driver_support_install_isr( _new, _old ) \
do { \
_old = set_vector( _new, CLOCK_VECTOR, 1 ); \
} while(0)
#define Clock_driver_support_initialize_hardware() \
do { \
uint32_t _clicks = CPU_CLOCK_RATE_MHZ * rtems_configuration_get_microseconds_per_tick(); \
MONGOOSEV_WRITE_REGISTER( CLOCK_BASE, MONGOOSEV_TIMER_INITIAL_COUNTER_REGISTER, _clicks ); \
Clock_driver_support_at_tick(); \
} while(0)
#define Clock_driver_support_shutdown_hardware() \
MONGOOSEV_WRITE_REGISTER( CLOCK_BASE, MONGOOSEV_TIMER_CONTROL_REGISTER, 0 )
#include <clockdrv_shell.c>
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