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Diffstat (limited to 'bsps/powerpc/include/libcpu/c_clock.h')
| -rw-r--r-- | bsps/powerpc/include/libcpu/c_clock.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/bsps/powerpc/include/libcpu/c_clock.h b/bsps/powerpc/include/libcpu/c_clock.h new file mode 100644 index 0000000000..bd4918fb44 --- /dev/null +++ b/bsps/powerpc/include/libcpu/c_clock.h @@ -0,0 +1,56 @@ +/* + * 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). + * + * The license and distribution terms for this file may in + * the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + * + * Modified to support the MPC750. + * Modifications Copyright (c) 1999 Eric Valette valette@crf.canon.fr + */ + +#ifndef _LIBCPU_C_CLOCK_H +#define _LIBCPU_C_CLOCK_H + +#include <rtems.h> + +/* + * These 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* unused); +/* bookE decrementer is slightly different */ +extern void clockIsrBookE (void *unused); +extern int clockIsOn (void* unused); + +/* + * These functions and variables represent the assumptions of this + * driver on the BSP. + */ + +extern int BSP_disconnect_clock_handler (void); +/* + * PCI Bus Frequency + */ +extern unsigned int BSP_bus_frequency; +/* + * processor clock frequency + */ +extern unsigned int BSP_processor_frequency; +/* + * Time base divisior (how many tick for 1 second). + */ +extern unsigned int BSP_time_base_divisor; + +#endif |