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/*
* Clock Tick Device Driver
*
* This routine utilizes the Decrementer Register common to the PPC family.
*
* The tick frequency is directly programmed to the configured number of
* microseconds per tick.
*
* COPYRIGHT (c) 1989-1997.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may in
* the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* Modified to support the MPC750.
* Modifications Copyright (c) 1999 Eric Valette valette@crf.canon.fr
*
* $Id$
*/
#ifndef _LIB_LIBCPU_C_CLOCK_H
#define _LIB_LIBCPU_C_CLOCK_H
#include <rtems.h>
/*
* Theses functions and variables represent the API exported by the CPU to the BSP
*/
extern void clockOff (void* unused);
extern void clockOn (void* unused);
extern void clockIsr (void);
extern int clockIsOn (void* unused);
/*
* Theses functions and variables represent the expected API nedeed by the CPU
* NOTE for JOEL : I would prefer to have an include of <bsp.h> as it would
* materialize the API (and providing a default bsp.h) could formalize the
* (generic + cpu_familly + cpu_specific)/ BSP interface.
*/
extern rtems_configuration_table BSP_Configuration;
extern unsigned int BSP_bus_frequency;
extern int BSP_disconnect_clock_handler (void);
extern int BSP_connect_clock_handler (void);
extern int printk(const char *, ...) __attribute__((format(printf, 1, 2)));
#endif
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